The lithologic and stratigraphic gas reservoirs in the north slope of the sanhu area, Qaidam basin:a study on their genetic conditions and characterization techniques
柴达木盆地三湖地区北斜坡岩性地层气藏形成的地质条件与预测技术研究

Keywords: Qaidam basin,sanhu region,lithologic-stratigraphic gas pool,slope-break,sedimentary,abnormal seismic response
柴达木盆地,三湖地区,岩性地层气藏,坡折带,沉积,地震异常

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Abstract:

三湖地区北斜坡褶皱发育,相变快,生储盖组合优越,具备形成岩性地层气藏的构造背景和地质务件.由于本区储层厚度薄(1～3m),缺乏三维地震资料,砂体分布难以准确追踪,导致岩性地层气藏勘探难以取得突破.已知气藏解剖和理论研究表明地层含气后会产生特殊的地震响应,通过地震异常信息研究,结合构造、沉积和成藏条件分析,发现驼西地区是岩性圈闭发育带,Tzh2井获得工业气流证明该区带具备形成岩性气区的潜力.

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