Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates
Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Hamada, Yohei [verfasserIn] Hirose, Takehiro [verfasserIn] Saito, Saneatsu [verfasserIn] Moe, Kyaw [verfasserIn] Wu, HungYu [verfasserIn] Tanikawa, Wataru [verfasserIn] Sanada, Yoshinori [verfasserIn] Nakamura, Yasuyuki [verfasserIn] Shimmoto, Yuichi [verfasserIn] Sugihara, Takamitsu [verfasserIn] Lin, Weiren [verfasserIn] Abe, Natsue [verfasserIn] Gupta, Lallan [verfasserIn] Kinoshita, Masataka [verfasserIn] Masaki, Yuka [verfasserIn] Nomura, Shun [verfasserIn] Yamada, Yasuhiro [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Marine and petroleum geology - Amsterdam [u.a.] : Elsevier Science, 1984, 108, Seite 356-367 |
|---|---|
| Übergeordnetes Werk: |
volume:108 ; pages:356-367 |
| DOI / URN: |
10.1016/j.marpetgeo.2018.06.010 |
|---|
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ELV003168905 |
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| 100 | 1 | |a Hamada, Yohei |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
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| 520 | |a Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. | ||
| 650 | 4 | |a Gas hydrate-bearing layers | |
| 650 | 4 | |a Equivalent strength (EST) | |
| 650 | 4 | |a Drilling parameters | |
| 650 | 4 | |a Formation strength | |
| 650 | 4 | |a Weight on bit (WOB) | |
| 650 | 4 | |a Top drive torque (Tr) | |
| 650 | 4 | |a RPM | |
| 650 | 4 | |a Rate of penetration (ROP) | |
| 700 | 1 | |a Hirose, Takehiro |e verfasserin |4 aut | |
| 700 | 1 | |a Saito, Saneatsu |e verfasserin |4 aut | |
| 700 | 1 | |a Moe, Kyaw |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, HungYu |e verfasserin |4 aut | |
| 700 | 1 | |a Tanikawa, Wataru |e verfasserin |4 aut | |
| 700 | 1 | |a Sanada, Yoshinori |e verfasserin |4 aut | |
| 700 | 1 | |a Nakamura, Yasuyuki |e verfasserin |4 aut | |
| 700 | 1 | |a Shimmoto, Yuichi |e verfasserin |4 aut | |
| 700 | 1 | |a Sugihara, Takamitsu |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Weiren |e verfasserin |4 aut | |
| 700 | 1 | |a Abe, Natsue |e verfasserin |4 aut | |
| 700 | 1 | |a Gupta, Lallan |e verfasserin |4 aut | |
| 700 | 1 | |a Kinoshita, Masataka |e verfasserin |4 aut | |
| 700 | 1 | |a Masaki, Yuka |e verfasserin |4 aut | |
| 700 | 1 | |a Nomura, Shun |e verfasserin |4 aut | |
| 700 | 1 | |a Yamada, Yasuhiro |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Marine and petroleum geology |d Amsterdam [u.a.] : Elsevier Science, 1984 |g 108, Seite 356-367 |h Online-Ressource |w (DE-627)303393416 |w (DE-600)1494910-6 |w (DE-576)259484032 |x 0264-8172 |7 nnns |
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10.1016/j.marpetgeo.2018.06.010 doi (DE-627)ELV003168905 (ELSEVIER)S0264-8172(18)30253-8 DE-627 ger DE-627 rda eng 550 DE-600 38.48 bkl 38.51 bkl Hamada, Yohei verfasserin aut Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) Hirose, Takehiro verfasserin aut Saito, Saneatsu verfasserin aut Moe, Kyaw verfasserin aut Wu, HungYu verfasserin aut Tanikawa, Wataru verfasserin aut Sanada, Yoshinori verfasserin aut Nakamura, Yasuyuki verfasserin aut Shimmoto, Yuichi verfasserin aut Sugihara, Takamitsu verfasserin aut Lin, Weiren verfasserin aut Abe, Natsue verfasserin aut Gupta, Lallan verfasserin aut Kinoshita, Masataka verfasserin aut Masaki, Yuka verfasserin aut Nomura, Shun verfasserin aut Yamada, Yasuhiro verfasserin aut Enthalten in Marine and petroleum geology Amsterdam [u.a.] : Elsevier Science, 1984 108, Seite 356-367 Online-Ressource (DE-627)303393416 (DE-600)1494910-6 (DE-576)259484032 0264-8172 nnns volume:108 pages:356-367 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.48 Marine Geologie 38.51 Geologie fossiler Brennstoffe AR 108 356-367 |
| spelling |
10.1016/j.marpetgeo.2018.06.010 doi (DE-627)ELV003168905 (ELSEVIER)S0264-8172(18)30253-8 DE-627 ger DE-627 rda eng 550 DE-600 38.48 bkl 38.51 bkl Hamada, Yohei verfasserin aut Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) Hirose, Takehiro verfasserin aut Saito, Saneatsu verfasserin aut Moe, Kyaw verfasserin aut Wu, HungYu verfasserin aut Tanikawa, Wataru verfasserin aut Sanada, Yoshinori verfasserin aut Nakamura, Yasuyuki verfasserin aut Shimmoto, Yuichi verfasserin aut Sugihara, Takamitsu verfasserin aut Lin, Weiren verfasserin aut Abe, Natsue verfasserin aut Gupta, Lallan verfasserin aut Kinoshita, Masataka verfasserin aut Masaki, Yuka verfasserin aut Nomura, Shun verfasserin aut Yamada, Yasuhiro verfasserin aut Enthalten in Marine and petroleum geology Amsterdam [u.a.] : Elsevier Science, 1984 108, Seite 356-367 Online-Ressource (DE-627)303393416 (DE-600)1494910-6 (DE-576)259484032 0264-8172 nnns volume:108 pages:356-367 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.48 Marine Geologie 38.51 Geologie fossiler Brennstoffe AR 108 356-367 |
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10.1016/j.marpetgeo.2018.06.010 doi (DE-627)ELV003168905 (ELSEVIER)S0264-8172(18)30253-8 DE-627 ger DE-627 rda eng 550 DE-600 38.48 bkl 38.51 bkl Hamada, Yohei verfasserin aut Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) Hirose, Takehiro verfasserin aut Saito, Saneatsu verfasserin aut Moe, Kyaw verfasserin aut Wu, HungYu verfasserin aut Tanikawa, Wataru verfasserin aut Sanada, Yoshinori verfasserin aut Nakamura, Yasuyuki verfasserin aut Shimmoto, Yuichi verfasserin aut Sugihara, Takamitsu verfasserin aut Lin, Weiren verfasserin aut Abe, Natsue verfasserin aut Gupta, Lallan verfasserin aut Kinoshita, Masataka verfasserin aut Masaki, Yuka verfasserin aut Nomura, Shun verfasserin aut Yamada, Yasuhiro verfasserin aut Enthalten in Marine and petroleum geology Amsterdam [u.a.] : Elsevier Science, 1984 108, Seite 356-367 Online-Ressource (DE-627)303393416 (DE-600)1494910-6 (DE-576)259484032 0264-8172 nnns volume:108 pages:356-367 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.48 Marine Geologie 38.51 Geologie fossiler Brennstoffe AR 108 356-367 |
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10.1016/j.marpetgeo.2018.06.010 doi (DE-627)ELV003168905 (ELSEVIER)S0264-8172(18)30253-8 DE-627 ger DE-627 rda eng 550 DE-600 38.48 bkl 38.51 bkl Hamada, Yohei verfasserin aut Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) Hirose, Takehiro verfasserin aut Saito, Saneatsu verfasserin aut Moe, Kyaw verfasserin aut Wu, HungYu verfasserin aut Tanikawa, Wataru verfasserin aut Sanada, Yoshinori verfasserin aut Nakamura, Yasuyuki verfasserin aut Shimmoto, Yuichi verfasserin aut Sugihara, Takamitsu verfasserin aut Lin, Weiren verfasserin aut Abe, Natsue verfasserin aut Gupta, Lallan verfasserin aut Kinoshita, Masataka verfasserin aut Masaki, Yuka verfasserin aut Nomura, Shun verfasserin aut Yamada, Yasuhiro verfasserin aut Enthalten in Marine and petroleum geology Amsterdam [u.a.] : Elsevier Science, 1984 108, Seite 356-367 Online-Ressource (DE-627)303393416 (DE-600)1494910-6 (DE-576)259484032 0264-8172 nnns volume:108 pages:356-367 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.48 Marine Geologie 38.51 Geologie fossiler Brennstoffe AR 108 356-367 |
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10.1016/j.marpetgeo.2018.06.010 doi (DE-627)ELV003168905 (ELSEVIER)S0264-8172(18)30253-8 DE-627 ger DE-627 rda eng 550 DE-600 38.48 bkl 38.51 bkl Hamada, Yohei verfasserin aut Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) Hirose, Takehiro verfasserin aut Saito, Saneatsu verfasserin aut Moe, Kyaw verfasserin aut Wu, HungYu verfasserin aut Tanikawa, Wataru verfasserin aut Sanada, Yoshinori verfasserin aut Nakamura, Yasuyuki verfasserin aut Shimmoto, Yuichi verfasserin aut Sugihara, Takamitsu verfasserin aut Lin, Weiren verfasserin aut Abe, Natsue verfasserin aut Gupta, Lallan verfasserin aut Kinoshita, Masataka verfasserin aut Masaki, Yuka verfasserin aut Nomura, Shun verfasserin aut Yamada, Yasuhiro verfasserin aut Enthalten in Marine and petroleum geology Amsterdam [u.a.] : Elsevier Science, 1984 108, Seite 356-367 Online-Ressource (DE-627)303393416 (DE-600)1494910-6 (DE-576)259484032 0264-8172 nnns volume:108 pages:356-367 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.48 Marine Geologie 38.51 Geologie fossiler Brennstoffe AR 108 356-367 |
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Enthalten in Marine and petroleum geology 108, Seite 356-367 volume:108 pages:356-367 |
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Enthalten in Marine and petroleum geology 108, Seite 356-367 volume:108 pages:356-367 |
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Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) |
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Hamada, Yohei @@aut@@ Hirose, Takehiro @@aut@@ Saito, Saneatsu @@aut@@ Moe, Kyaw @@aut@@ Wu, HungYu @@aut@@ Tanikawa, Wataru @@aut@@ Sanada, Yoshinori @@aut@@ Nakamura, Yasuyuki @@aut@@ Shimmoto, Yuichi @@aut@@ Sugihara, Takamitsu @@aut@@ Lin, Weiren @@aut@@ Abe, Natsue @@aut@@ Gupta, Lallan @@aut@@ Kinoshita, Masataka @@aut@@ Masaki, Yuka @@aut@@ Nomura, Shun @@aut@@ Yamada, Yasuhiro @@aut@@ |
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2018-01-01T00:00:00Z |
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Hamada, Yohei |
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Hamada, Yohei ddc 550 bkl 38.48 bkl 38.51 misc Gas hydrate-bearing layers misc Equivalent strength (EST) misc Drilling parameters misc Formation strength misc Weight on bit (WOB) misc Top drive torque (Tr) misc RPM misc Rate of penetration (ROP) Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
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550 DE-600 38.48 bkl 38.51 bkl Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates Gas hydrate-bearing layers Equivalent strength (EST) Drilling parameters Formation strength Weight on bit (WOB) Top drive torque (Tr) RPM Rate of penetration (ROP) |
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ddc 550 bkl 38.48 bkl 38.51 misc Gas hydrate-bearing layers misc Equivalent strength (EST) misc Drilling parameters misc Formation strength misc Weight on bit (WOB) misc Top drive torque (Tr) misc RPM misc Rate of penetration (ROP) |
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ddc 550 bkl 38.48 bkl 38.51 misc Gas hydrate-bearing layers misc Equivalent strength (EST) misc Drilling parameters misc Formation strength misc Weight on bit (WOB) misc Top drive torque (Tr) misc RPM misc Rate of penetration (ROP) |
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ddc 550 bkl 38.48 bkl 38.51 misc Gas hydrate-bearing layers misc Equivalent strength (EST) misc Drilling parameters misc Formation strength misc Weight on bit (WOB) misc Top drive torque (Tr) misc RPM misc Rate of penetration (ROP) |
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Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
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Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
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Hamada, Yohei Hirose, Takehiro Saito, Saneatsu Moe, Kyaw Wu, HungYu Tanikawa, Wataru Sanada, Yoshinori Nakamura, Yasuyuki Shimmoto, Yuichi Sugihara, Takamitsu Lin, Weiren Abe, Natsue Gupta, Lallan Kinoshita, Masataka Masaki, Yuka Nomura, Shun Yamada, Yasuhiro |
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equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
| title_auth |
Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
| abstract |
Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. |
| abstractGer |
Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. |
| abstract_unstemmed |
Gas hydrate-bearing layers are normally identified by a seismic imaged bottom simulating reflectors (BSR) or by downhole log responses because of their high acoustic velocity and electric resistivity compared to surrounding formations. These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. In addition, the EST only requires drilling performance data without any additional tools or measurements, making it a simple and economical tool for the exploration of gas hydrates. |
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| title_short |
Equivalent formation strength as a proxy tool for exploring for the location and distribution of gas hydrates |
| remote_bool |
true |
| author2 |
Hirose, Takehiro Saito, Saneatsu Moe, Kyaw Wu, HungYu Tanikawa, Wataru Sanada, Yoshinori Nakamura, Yasuyuki Shimmoto, Yuichi Sugihara, Takamitsu Lin, Weiren Abe, Natsue Gupta, Lallan Kinoshita, Masataka Masaki, Yuka Nomura, Shun Yamada, Yasuhiro |
| author2Str |
Hirose, Takehiro Saito, Saneatsu Moe, Kyaw Wu, HungYu Tanikawa, Wataru Sanada, Yoshinori Nakamura, Yasuyuki Shimmoto, Yuichi Sugihara, Takamitsu Lin, Weiren Abe, Natsue Gupta, Lallan Kinoshita, Masataka Masaki, Yuka Nomura, Shun Yamada, Yasuhiro |
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303393416 |
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c |
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false |
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false |
| doi_str |
10.1016/j.marpetgeo.2018.06.010 |
| up_date |
2024-07-06T18:43:34.711Z |
| _version_ |
1803856290473050112 |
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These gas hydrate characteristics can also result in contrasting in-situ formation compressive strengths. Here, we describe gas hydrate-bearing layers based on equivalent strength (EST), which relates to in-situ compressive strength, in five exploration boreholes drilled during the Indian National Gas Hydrate Program Expedition 02 (NGHP-02). For Site NGHP-02-23, a representative site for those that were established during NGHP-02, the EST evaluated from drilling parameters shows a constant trend of ∼2 MPa, with some strong peak values in the 0–271.4 m-below-seafloor (mbsf) interval, and a sudden increase up to 4 MPa above the BSR depth (271.4–290.0 mbsf). Below the BSR, the EST stays at ∼2 MPa to the bottom of the hole (378 mbsf). Comparing the EST with logging data and a core sample description suggests that the EST depth profiles reflect the formation lithology and gas hydrate content. The EST increases in sand-rich and gas hydrate-bearing zone. In the lower gas hydrate layers in particular, the EST curve shows the same approximate trend with that of P-wave velocity and resistivity measured during downhole logging. Similar relationships between EST, hydrate layer, and log responses are confirmed in other four sites drilled nearby in NGHP-02 Area B. These results suggest that the EST, as a proxy for in-situ formation strength, can indicate the location and extent of the gas hydrate as well as borehole logging. Although the EST was calculated after drilling, utilizing the recorded surface drilling parameters (weight on bit, top drive torque, RPM and rate of penetration) in this study, the EST can be acquired during drilling using real-time drilling parameters. 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