新疆石油地质

›› 2017, Vol. 38 ›› Issue (4): 1-1.doi: 10.7657/XJPG20170405

• 论文 •    

普光地区嘉二段构造裂缝形成机理及预测

祖克威1，2，曾大乾3，程秀申1，卓色强1，李松峰1   

  1. (1.中国石化 中原油田分公司 勘探开发科学研究院,郑州 450018;2.中国石油大学 地球科学学院,北京 102249;3.中国石化 石油勘探开发研究院,北京 100083)
  • 出版日期:2019-01-01 发布日期:1905-07-16

Forming Mechanism and Prediction of Structural Fractures in the Second Member of Jialingjiang Formation in Puguang Area

ZU Kewei1, 2, ZENG Daqian3, CHENG Xiushen1, ZHUO Seqiang1, LI Songfeng1   

  1. (1.Research Institute of Exploration and Development, Zhongyuan Oilfield Company, Sinopec, Zhengzhou, Henan 450018, China; 2.School of Geosciences, China University of Petroleum, Beijing 102249, China; 3. Petroleum Exploration and Production Research Institute, Sinopec, Beijing 100083, China)
  • Online:2019-01-01 Published:1905-07-16

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摘要： 为了较为准确地预测碳酸盐岩中构造裂缝的发育程度，以普光地区嘉陵江组二段为例，利用野外露头剖面，岩心和薄片资料，对其裂缝发育特征开展研究；结合声发射和裂缝包裹体均一温度测试结果，对研究区裂缝的形成机理进行分析。在上述基础上，采用应力场数值模拟，对不同期次的裂缝进行预测。分析认为，构造裂缝主要形成于燕山运动晚期和喜马拉雅运动早期的北西—南东向挤压作用，以及喜马拉雅运动晚期的北东—南西向挤压作用；普光地区嘉二段剪破裂的发育程度大于张破裂，构造裂缝主要发育在断裂带附近、清溪场构造中西部地区、普光构造主体、大湾—毛坝构造北部、分水岭构造北部和铁山构造带。数值模拟计算的破裂率和单井裂缝发育强度较为一致，相关系数较高。

Abstract: In order to accurately predict structural fracture development in carbonate reservoirs, taking the second member of Jialingjiang formation in Puguang area for example, the paper studies the characteristics of fracture development by using field outcrop, core and thin section data; analyzes the forming mechanism of the fractures in the study area by combining with the test results of acoustic emission and inclusion homogenization temperature in the fractures. Based on which, fractures of different periods are predicted through stress field numerical simulation. It is concluded that the structural fractures were mostly formed under the NW-SE trending compression during the late Yanshan movement and the early Himalaya movement, and under the NE-SW trending compression during the late Himalaya movement. The development degree of shear fracture is higher than that of tension fracture in the second member of Jialingjiang formation in Puguang area. The structural fractures are mainly developed in the areas near fault zones, in the middle-western areas of Qingyangxi structure, in the main body of Puguang structure, in the northern parts of Dawan-Maoba and Fenshuiling structures and in the Tieshan structural belt. The rupture rate obtained from numerical simulation and the fracture development intensity have a good correlation with a relatively high correlation coefficient.

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