塔里木盆地塔河油田S108井区奥陶系—间房组裂缝性储层研究

CHARACTERISTICS OF FRACTURE RESERVOIR OF ORDOVICIAN YIJIANFANG FORMATION IN S108 AREA OF TAHE OILFIELD, TARIM BASIN

梁积伟 李宗杰 刘昊伟 李玮 云露

Liang Jiwei Li Zongjie Liu Haowei Li wei Yun Lu

长安大学, 成矿作用及其动力学开放研究实验室, 西安, 710054 2. 西北大学, 大陆动力学国家重点实验室, 西安, 710069 3. 中国石油化工股份有限公司, 西北分公司, 乌鲁木齐, 830011 4. 中国石油勘探开发研究院, 北京, 100083

Open Laboratory of Mineralization and Dynamics, Chang'an University, Xi'an, Shaanxi 710054, China 2. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an, Shaanxi 710069, China 3. Northwest Branch Company, SINOPEC, Urumqi, Xinjiang 830011, China 4. Research Institute of Petroleum Exploration & Development, Petro China, Beijing 100083, China

塔里木盆地塔河油田S108井区奥陶系一间房组是碳酸盐岩裂缝性油气藏。依据钻井、录井、取心、FMI成像测井以及常规测井,对裂缝进行识别。塔河油田S108井区的裂缝有构造缝、溶蚀缝和压溶缝,以构造缝为主,构成裂缝网络主体。裂缝发育期次有3期:海西早期、海西晚期和印支—燕山期,最重要的一期裂缝发育于海西晚期。利用三维地震资料,通过振幅变化率、相干体分析和波阻抗反演技术,预测S108井区一间房组裂缝发育带。S108井区奥陶系一间房组裂缝分布极不均匀,平面上主要发育在S108井区北部,受区域性断裂控制,两组不同方向断裂交会处和地层曲率最大处裂缝发育;垂向上主要集中于一间房组顶面以下50 m内,向下裂缝发育程度降低。

The Ordovician Yijianfang Formation in the S108 area of the Tahe Oil Field of the Tarim Basin is carbonate fracture reservoir.Based on drilling,logging,core description,FMI and well log,fractures have been identified.The fractures in the area include structural,dissolution and subtractive original ones,among which the structural ones constitute the main portion of fracture network.Fracture evolution has experienced 3 stages: the Early Hercynian,the Late Hercynian,and the Indosinian—Yanshanian.The most important stage is the Late Hercynian.Thanks to 3-dimensional seismic data,with amplitude change rate,coherent body analysis and impedance inversion technique,fracture zone of the Yijianfang Formation in the S108 area has been predicted.The fracture distribution is very uneven.Horizontally,fractures controlled by regional fault mainly locate in the northern S108 area.Vertically,fractures concentrate 50 m below the top of the Yijianfang Formation,and decrease downwards.

国家科技重大专项(2008ZX05005—004—09HZ);西北大学大陆动力学国家重点实验室开放基金(07LCB11)资助

https://doi.org/10.11781/sysydz201005447