辽河滩海葵东地区低阻油气层测井评价

发布时间：2018-07-25 21:15

【摘要】：辽河滩海葵东地区低阻油气层发育,但其成因机理不明,测井识别难度大。通过对研究区岩性、微观结构、黏土矿物、含油幅度、钻井液等深入分析可知,高束缚水饱和度、低含油幅度和盐水钻井液侵入是低阻油气层形成的三大成因。为解决钻井液侵入而无法准确识别流体性质等难题,从不同测井技术原理出发,针对不同类型成因机理优选合适的测井评价技术。研究表明:高束缚水饱和度造成的低阻油气层,应优选核磁共振测井;盐水钻井液侵入和砂泥岩薄互层造成的低阻油气层,应优选具有不同探测深度的高分辨率阵列感应测井。该研究可为辽河油田其他低阻油气层研究提供借鉴。
[Abstract]:The low resistivity oil and gas layers are developed in the eastern area of Liaohetan sea anemone, but the genetic mechanism is not clear and the logging identification is difficult. Through the deep analysis of lithology, microstructure, clay minerals, oil content and drilling fluid in the study area, it is concluded that high irreducible water saturation, low oil content and brine drilling fluid invasion are the three major causes of formation of low resistivity oil and gas reservoirs. In order to solve the problem of drilling fluid invasion and the difficulty of identifying the fluid property accurately, according to the principle of different logging technology, the appropriate logging evaluation technology is selected according to different types of formation mechanism. The results show that nuclear magnetic resonance logging is suitable for low resistivity oil and gas reservoirs caused by high irreducible water saturation, and high resolution array induction logging with different depths should be selected for low resistivity oil and gas reservoirs caused by salt water intrusion and thin interbed of sand and mudstone. This study can be used for reference for other low resistivity reservoirs in Liaohe Oilfield.
【作者单位】：中国石油辽河油田分公司;
【基金】：国家科技重大专项“渤海湾盆地精细勘探关键技术”子课题“辽河坳陷增储领域地质评价与勘探实践”(2016ZX05006-005)
【分类号】：P631.81;TE311

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