基于多资料的砂砾岩储层有效性精细评价

Fine evaluation on the effectiveness of glutenite reservoirs based on diverse data

张欣 尚锁贵 张国强 李东 吴俊刚

ZHANG Xin SHANG Suogui ZHANG Guoqiang LI Dong WU Jungang

中海油田服务股份有限公司油田技术事业部 中海石油(中国)有限公司天津分公司

Oilfield Technology Division, China Oilfield Services Limited, Tianjin 300459, China Tianjin Branch of China National Offshore Oil Co., Ltd., Tianjin 300459, China

近年来，渤海油田在中深层砂砾岩储层频获重大发现，揭示了渤海湾盆地砂砾岩储层良好的勘探远景。但该类储层一般具有孔隙结构多样、储集空间复杂、非均质性强等特征，常规或者单一测井资料的认识常常与测试结果大相径庭。利用常规、阵列声波、核磁、壁心等多种测井资料，综合分析砂砾岩储层的岩石脆性、孔隙结构等特征，对渤海油田某区块孔店组砂砾岩进行有效性评价。研究表明储层的岩石脆性指数和储层的孔隙结构分布情况对砂砾岩储层的有效性影响较大，利用此有效性评价方法在测试中取得良好效果。

In recent years, great discoveries have been realized frequently in middle-deep glutenite reservoirs in Bohai Oilfield, which reveals the promising exploration prospect of glutenite reservoirs in the Bohai Bay Basin.However, this type of reservoirs is generally characterized by diverse pore structures, complex reservoir space and strong heterogeneity, so the understandings based on conventional or single logging data are often quite different from the test results.In this paper, based on the data of conventional logging, array sonic logging, nuclear magnetic logging, wall core logging and so on, the characteristics of glutenite reservoirs (e.g.rock brittleness and pore structure) were analyzed comprehensively, and the effectiveness of Kongdian Formation glutenite in a certain block of Bohai Oilfield was evaluated.It is indicated that the effectiveness of glutenite reservoir is more affected by its rock brittleness index and pore structure.In conclusion, this effectiveness evaluation method does well in the tests.

10.13639/j.odpt.2018.S0.019