Occurrence of Free‐Gas Associated with Methane‐Hydrate‐Bearing Formations in the MITI Nankai Trough Wells, Offshore Tokai, Japan
Occurrence of Free‐Gas Associated with Methane‐Hydrate‐Bearing Formations in the MITI Nankai Trough Wells, Offshore Tokai, Japan
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日本东海近海 MITI 南海槽井中与含甲烷水合物地层相关的游离气的出现
DOI：
10.1111/j.1751-3928.2004.tb00190.x
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发表时间：
2004
期刊：
影响因子：
1.4
通讯作者：
T. Uchida
中科院分区：
文献类型：
--
作者：
T. Takayama;M. Nishi;Hiroaki Yamamoto;Y. Sanada;Shigemi Matsuda;T. Uchida
抽象的。MITI Nankai Trough威尔斯井的钻探目的是勘探含甲烷水合物的沉积物，并结合地震推断的海底模拟反射体（BSR）。在该项目中，测井数据显示含甲烷水合物地层下方存在低速纵波（P波）层。偶极横波声波测井仪（DSI）无法在该区域获得准确的压缩速度，因此无法在测井、VSP和地面地震剖面之间进行准确的对比。
Abstract. The MITI Nankai Trough wells were drilled for exploration of methane‐hydrate‐bearing sediments in association with seismic inferred bottom simulating reflectors (BSRs). In this project, log data showed low velocity compressional‐wave (P‐wave) layers below methane‐hydrate‐bearing formations. Dipole shear sonic acoustic tools (DSI) could not acquire accurate compres‐sional velocity in this zone, thus it was not possible to accurately correlate between logging, VSP and surface seismic profiles.