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

新疆石油地质 ›› 2017, Vol. 38 ›› Issue (zk(English) ): 30-35.

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

ZU Kewei^1,2, ZENG Daqian³, CHENG Xiushen¹, ZHUO Seqiang¹, LI Songfeng¹

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

收稿日期:2016-12-15 修回日期:2017-05-22 出版日期:2018-01-01 发布日期:2021-05-19

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

ZU Kewei^1,2, ZENG Daqian³, CHENG Xiushen¹, ZHUO Seqiang¹, LI Songfeng¹

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

Received:2016-12-15 Revised:2017-05-22 Online:2018-01-01 Published:2021-05-19
About author:ZU Kewei, E-mail: zukewei1234@aliyun.com

摘要/Abstract

摘要： In order to accurately predict structural fracture development in carbonate reservoirs, taking the second member of Jialingjiang Formation in the 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 Yanshanian movement and the early Himalayan movement, and under the NE-SW trending compression during the late Himalayan movement. The development degree of shear fracture is higher than that of extensional fracture in the second member of Jialingjiang Formation in the Puguang area. The structural fractures are mainly developed in the areas near fault zones, in the middle-western areas of Qingxichang 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 fracture rate obtained from numerical simulation and the fracture development intensity have a good correlation with a relatively high correlation coefficient.

关键词: Puguang area, Jialingjiang Formation, carbonate rock, structural fracture, stress field simulation, fracture prediction

Abstract: In order to accurately predict structural fracture development in carbonate reservoirs, taking the second member of Jialingjiang Formation in the 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 Yanshanian movement and the early Himalayan movement, and under the NE-SW trending compression during the late Himalayan movement. The development degree of shear fracture is higher than that of extensional fracture in the second member of Jialingjiang Formation in the Puguang area. The structural fractures are mainly developed in the areas near fault zones, in the middle-western areas of Qingxichang 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 fracture rate obtained from numerical simulation and the fracture development intensity have a good correlation with a relatively high correlation coefficient.

Key words: Puguang area, Jialingjiang Formation, carbonate rock, structural fracture, stress field simulation, fracture prediction

ZU Kewei, ZENG Daqian, CHENG Xiushen, ZHUO Seqiang, LI Songfeng. Forming Mechanism and Prediction of Structural Fractures in the Second Member of Jialingjiang Formation in Puguang area[J]. 新疆石油地质, 2017, 38(zk(English) ): 30-35.

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

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

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