川西北超深层复杂构造气藏裂缝建模方法及开发潜力预测

doi:10.3969/j.issn.1006-6535.2022.03.014

特种油气藏 ›› 2022, Vol. 29 ›› Issue (3): 98-103.DOI: 10.3969/j.issn.1006-6535.2022.03.014

川西北超深层复杂构造气藏裂缝建模方法及开发潜力预测

张连进^1,2, 王俊杰^1,2, 庄小菊¹, 陈洋¹, 文雯¹, 兰雪梅¹, 陶佳丽¹

1.中国石油西南油气田分公司,四川成都 610000;
2.中国石油碳酸盐岩储层重点实验室,浙江杭州 310023

收稿日期:2021-05-09 修回日期:2022-03-20 出版日期:2022-06-25 发布日期:2023-01-09
通讯作者: 庄小菊(1985—),女,工程师,2007年毕业于西南石油大学计算机科学与技术专业,2010年毕业于该校油气田开发专业,获硕士学位,现主要从事油气田开发方面的研究工作。
作者简介:张连进(1982—),男,高级工程师,2005年毕业于西南石油学院资源勘查工程专业,2009年毕业于西南石油大学矿产普查与勘探专业,获硕士学位,现主要从事开发地质方面的研究工作。
基金资助:
中国石油科学研究与技术开发项目“川西北部栖霞组超深高压气藏效益开发技术研究与应用”(kt2018-16-08)

Fracture Modeling Method and Development Potential Prediction of Ultra-deep Gas Reservoirs with Complex Structure in Northwestern Sichuan

Zhang Lianjin^1,2, Wang Junjie^1,2, Zhuang Xiaoju¹, Chen Yang¹, Wen Wen¹, Lan Xuemei¹, Tao Jiali¹

1. PetroChina Southwest Oil and Gasfield Company, Chengdu, Sichuan 610000, China;
2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou, Zhejiang 310023, China

Received:2021-05-09 Revised:2022-03-20 Online:2022-06-25 Published:2023-01-09

摘要/Abstract

摘要： 针对川西北栖霞组海相碳酸盐岩气藏构造复杂、超深埋藏、高温高压、储层薄、裂缝发育等地质特点,基于三维地震数据,采用蚂蚁追踪技术和嵌入式离散裂缝数值模拟方法,编制嵌入式离散裂缝数值模拟器,优化气藏开发参数,预测气藏开发潜力。研究结果表明:气藏开发前期更适合用蚂蚁追踪技术来预测天然裂缝,嵌入式离散裂缝数值模拟器在捕捉流体在裂缝中的运移方面具有常规油藏模拟器无法比拟的优势,可显著提高裂缝性气藏数值模拟精度;优化栖霞组气藏合理开发井型为大斜度井或水平井,合理开发井距为1 600~1 800 m,水平井最优长度为600 m,人工裂缝最优半长为100 m。研究成果对同类碳酸盐岩气藏高效开发具有借鉴意义。

关键词: 川西北, 栖霞组, 碳酸盐岩, 气藏, 裂缝建模, 数值模拟

Abstract: Aiming at the geological characteristics of marine carbonate gas reservoirs in Qixia Formation in northwest Sichuan such as complex structure, ultra-deep burial, high temperature and high pressure, thin reservoirs and well-developed fractures, an embedded discrete fracture numerical simulator was prepared with ant tracking technology and embedded discrete fracture numerical simulation method on the basis of 3D seismic data to optimize the parameters of gas reservoir development and predict the development potential of gas reservoirs. The results showed that, it was more suitable to employ ant tracking technology to predict natural fractures in the early stage of gas reservoir development, and the embedded discrete fracture numerical simulator, compared with conventional reservoir simulators, had incomparable advantages in capturing the fluid that migrated in fractures, significantly improving the numerical simulation accuracy of fractured gas reservoirs; the development well type was optimized as highly deviated well and horizontal well for Qixia Formation gas reservoirs, the reasonable spacing between development wells was 1,600 to 1,800 m, the optimal length of horizontal well was 600 m, and the optimal half-length of artificial fracture was 100 m. There is much for reference of the study results for the efficient development of similar carbonate gas reservoirs.

Key words: northwestern Sichuan, Qixia Formation, carbonate rock, gas reservoir, fracture modeling, numerical simulation

中图分类号:

TE319

张连进, 王俊杰, 庄小菊, 陈洋, 文雯, 兰雪梅, 陶佳丽. 川西北超深层复杂构造气藏裂缝建模方法及开发潜力预测[J]. 特种油气藏, 2022, 29(3): 98-103.

Zhang Lianjin, Wang Junjie, Zhuang Xiaoju, Chen Yang, Wen Wen, Lan Xuemei, Tao Jiali. Fracture Modeling Method and Development Potential Prediction of Ultra-deep Gas Reservoirs with Complex Structure in Northwestern Sichuan[J]. Special Oil & Gas Reservoirs, 2022, 29(3): 98-103.

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川西北超深层复杂构造气藏裂缝建模方法及开发潜力预测

Fracture Modeling Method and Development Potential Prediction of Ultra-deep Gas Reservoirs with Complex Structure in Northwestern Sichuan

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