南川阳春沟复杂构造区常压页岩气高效开发实践

胡春锋; 任建华; 王伟; 卢比; 倪锋; 韩克宁

doi:10.13809/j.cnki.cn32-1825/te.2024424

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南川阳春沟复杂构造区常压页岩气高效开发实践
Efficient development practice of normal-pressure shale gas in complex structural area of Yangchungou, Nanchuan
2026年16卷第2期页码：383-393
收稿：2025-01-07，

纸质出版：2026-03-26
DOI： 10.13809/j.cnki.cn32-1825/te.2024424
稿件说明：

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胡春锋, 任建华, 王伟, 等. 南川阳春沟复杂构造区常压页岩气高效开发实践[J]. 油气藏评价与开发, 2026, 16(2): 383-393. DOI： 10.13809/j.cnki.cn32-1825/te.2024424.

HU Chunfeng, REN Jianhua, WANG Wei, et al. Efficient development practice of normal-pressure shale gas in complex structural area of Yangchungou, Nanchuan[J]. Petroleum Reservoir Evaluation and Development, 2026, 16(2): 383-393. DOI： 10.13809/j.cnki.cn32-1825/te.2024424.

摘要

阳春沟区块位于四川盆地东南缘盆缘过渡带，主力开发层位为龙马溪组龙一段，压力系数介于1.00~1.35，是典型的常压页岩气藏。受多期构造运动影响，该区块具有构造复杂、保存条件差异大、地应力变化快的特征，地质条件较邻区平桥、东胜区块更为复杂。为提升复杂构造区优质页岩钻遇率、改造效果与单井产能，通过地质模型精度提升、开发关键参数优化、水平井优快实施、储层改造定量化设计等研究，形成一体化技术对策：①以断层空间展布校正、层面信息约束为基础，构建高精度全层系构造模型，结合岩石力学参数分析与三维地震反演属性约束，建立三维地质力学属性模型；②通过纵向上开发层系与靶窗优化、平面上分区差异化井距与布井方位设计，制定井网-缝网适配的开发技术政策；③基于高精度模型实施“一区一策、一井一策”井身结构与钻井参数优化，提升钻井时效与储层钻遇率；④开展压裂参数优化设计与改造效果定量评价，提升改造缝网模拟精度，优化压裂参数以改善改造效果。实践表明，该技术体系有效提升了阳春沟区块单井产能与估算最终可采储量（EUR），显著优于邻区东胜区块，为同类型复杂构造区常压页岩气效益开发提供了技术借鉴。

Abstract

The Yangchungou block is located in the basin-margin transition zone on the southeastern margin of the Sichuan Basin. Its main development formation is the first member of the Longmaxi Formation

with a pressure coefficient ranging from 1.0 to 1.35

making it a typical normal-pressure shale gas reservoir. Affected by multiple phases of tectonic movements

the block is characterized by complex structure

large differences in preservation conditions

and rapid changes in in-situ stress

and its geological conditions are more complex than those of the adjacent Pingqiao and Dongsheng blocks. To improve the drilling rate of high-quality shale

stimulation effectiveness

and single-well productivity in complex structural areas

an integrated technical strategy was developed through research on improving geological model accuracy

optimizing key development parameters

facilitating the efficient and rapid implementation of horizontal wells

and enabling quantitative design of reservoir stimulation. (1) A high-precision full-sequence structural model was constructed based on fault spatial distribution correction and horizon information constraints

and a 3D geomechanical attribute model was established by integrating rock mechanics parameter analysis and 3D seismic inversion attribute constraints. (2) Well pattern-fracture network adaptive development technical policies were formulated through vertical optimization of development layers and target windows

as well as horizontal zonal differentiation of well spacing and well orientation design. (3) Wellbore structure and drilling parameters were optimized with a “zone-specific and well-specific strategy” approach based on high-precision models to enhance drilling efficiency and reservoir drilling rate. (4) Optimization design of fracturing parameters and quantitative evaluation of stimulation effectiveness were conducted to improve the simulation accuracy of the fracture network and optimize fracturing parameters to improve stimulation effectiveness. Practice shows that this technical system effectively improves the single-well productivity and estimated ultimate recovery (EUR) of the Yangchungou block

which is significantly better than that of the adjacent Dongsheng block

and provides a technical reference for the efficient development of normal-pressure shale gas in similar complex structural areas.

关键词

Keywords

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