Structural diagenesis and reservoir prediction of Lower Jurassic Ahe Formation in the northern structural belt of Kuqa depression

被引：0
|
作者：
Wang K. [1 ,2 ]
Zhang R. [1 ,2 ]
Tang Y. [3 ]
Yu C. [1 ,2 ]
Yang Z. [1 ,2 ]
Tang Y. [3 ]
Zhou L. [4 ]
机构：
[1] PetroChina Hangzhou Research Institute of Geology, Zhejiang, Hangzhou
[2] Tarim Basin Research Center, Korla, Xinjiang
[3] Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Hubei, Wuhan
[4] Research Institute of Petroleum Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2022年 / 43卷 / 07期
关键词：
Kuqa depression; northern structural belt; porosity loss by compaction; reservoir prediction; structural diagenesis; tectonic fracture; tectonic stress; tight sandstone reservoir;
D O I：
10.7623/syxb202207004
中图分类号：
学科分类号：
摘要：
Structural diagenesis is an important factor controlling reservoir characteristics of the Jurassic Ahe Formation in the northern structural belt of Kuqa depression, mainly involving porosity loss by compaction under paleo-tectonic stress and tectonic fractures. Based on analyzing the characteristics of reservoirs and tectonic stress, through quantitative analysis of the controlling effect of paleo-tectonic stress on porosity loss by compaction and tectonic fracture characteristics of Ahe Formation, this paper carries out the infinite element numerical simulation of paleo-tectonic stress and reservoir physical property of the Jurassic Ahe Formation in the northern structural belt of Kuqa depression, so as to predict favorable reservoir areas. The research shows that the paleo-tectonic stress is an important factor controlling reservoir physical property and tectonic fracture feature of Ahe Formation. The maximum paleo-tectonic stress has a negative linear correlation with the average reservoir porosity, and has a positive correlation of power function with the porosity loss by compaction under tectonic stress. The direction of maximum paleo tectonic stress controls the primary strike of tectonic fractures, and its magnitude controls the development degree of tectonic stress. The maximum paleo-tectonic stress has a good positive correlation of exponential function with the surface density and surface porosity of tectonic fractures. According to the mutual relationship between maximum paleo-tectonic stress and reservoir physical property, the Ahe Formation reservoirs can be divided into porous type, fractured-porous type and fractured type, and the fractured-porous type is further subdivided into subtypes a, b, c, and d. The relatively high-quality reservoir of subtype a and medium-quality reservoir of subtype b are developed in the Heiyingshan to Kuqa River area in the middle section of Bashi structural belt. This is still a blank area of exploration, and considered to be a potential field for hydrocarbon exploration but with some exploration risks. © 2022 Science Press. All rights reserved.
引用
收藏
页码：925 / 940
页数：15
相关论文
共 58 条
  • [1] ZENG Lianbo, ZHU Rukai, GAO Zhiyong, Et al., Structural diagenesis and its petroleum geological significance[J], Petroleum Science Bulletin, 1, 2, pp. 191-197, (2016)
  • [2] LAUBACH S E, EICHHUBL P, HILGERS C, Et al., Structural diagenesis[J], Journal of Structural Geology, 32, 12, pp. 1866-1872, (2010)
  • [3] YUAN Jing, YU Guoding, ZHONG Jianhui, Et al., An overview of structural diagenesis[J], Acta Sedimentologica Sinica, 36, 6, pp. 1177-1189, (2018)
  • [4] ZHANG Ronghu, ZENG Qinglu, WANG Ke, Et al., New progress in the theory and technology of tectonic diagenesis on reservoir and the geological significance of ultra-deep oil and gas exploration[J], Acta Petrolei Sinica, 41, 10, pp. 1278-1292, (2020)
  • [5] GONG Lei, ZENG Lianbo, DU Yijing, Et al., Influences of structural diagenesis on fracture effectiveness:a case study of the Cretaceous tight sandstone reservoirs of Kuqa foreland basin[J], Journal of China University of Mining &Technology, 44, 3, pp. 514-519, (2015)
  • [6] ZENG Lianbo, LIU Guoping, ZHU Rukai, Et al., A quantitative evaluation method of structural diagenetic strength of deep tight sandstone reservoirs in Kuqa foreland basin[J], Acta Petrolei Sinica, 41, 12, pp. 1601-1609, (2020)
  • [7] SHOU Jianfeng, SI Chunsong, ZHU Guohua, Et al., Control factors of the properties of the Lower Jurassic sandstone reservoirs in the Kuqa depression, Tarim Basin[J], Geological Review, 47, 3, pp. 272-277, (2001)
  • [8] SHOU Jianfeng, ZHU Guohua, ZHANG Huiliang, Lateral structure compression and its influence on sandstone diagenesis-a case study from the Tarim Basin[J], Acta Sedimentologica Sinica, 21, 1, pp. 90-95, (2003)
  • [9] SHOU Jianfeng, SI Chunsong, ZHANG Da, Factors controlling properties of Lower Jurassic sandstone reservoirs in Kuqa depression, Tarim Basin[J], Acta Geoscientica Sinica, 25, 4, pp. 447-452, (2004)
  • [10] SHOU Jianfeng, ZHANG Huiliang, SHEN Yang, The analysis of controlling factors on sandstone diagenesis and porosity preservation of Lower Juarassic in Tugerming anticline, Kuqa forland basin[J], Acta Sedimentologica Sinica, 25, 6, pp. 869-875, (2007)
123456