川南页岩气水平井井间干扰影响因素分析

doi:10.3969/j.issn.1672-7703.2021.02.011

摘要/Abstract

摘要： 平台井组式开发已成为页岩气开发的主要模式，依托科技攻关与现场试验，川南地区实现了埋深3500m 以浅资源的规模开发。为提高整体开发效益，开展了缩短水平井巷道间距、提高压裂改造强度等开发技术政策调整，实施期间压裂井间干扰频繁发生。通过建立同平台压裂生产同步作业压力传导模型，厘清了井间干扰影响因素：①天然裂缝发育程度；②水平井巷道间距；③分段簇间距；④压裂施工参数；⑤水力裂缝形态。基于地质工程一体化开发理念，提出了压裂井间干扰防控技术措施，取得了较为显著的效果，为后期的深化研究与开发技术政策调整提供了支撑。

关键词: 页岩气, 井间干扰, 同步作业, 压力亏空, 天然裂缝

Abstract: Well group platform has become a popular way of shale gas development. Relying on scientific research and field test,
shale gas resources with burial depth shallow than 3500 m have been commercially developed in a large scale in the southern Sichuan Basin. In order to improve the overall benefit, a series of development technology strategy adjustments have been implemented,such as shortening the well spacing, increasing the intensity of stimulation, etc., during which frac hits occurred frequently.The pressure conduction model for synchronous operation of fracturing and production on the same platform is established,and the factors affecting frac hit are clarified, including (1) natural fracture development; (2) well spacing; (3) cluster
spacing; (4) fracturing operation parameters; (5) hydraulic fracture geometry. Based on the development concept of integrated geology and engineering, this paper puts forward technical measures for prevention and control the frac hit, which has achieved remarkable results. This will provide support for the further deep research and the strategic adjustment of development technology.

中图分类号:

TE357.14

周小金, 杨洪志, 范宇, 曾波, 宋毅, 苑术生, 何斌, 刘波, 杨蕾, 宋雯静, 王峻源. 川南页岩气水平井井间干扰影响因素分析[J]. 中国石油勘探, 2021, 26(2): 103-112.

Zhou Xiaojin, Yang Hongzhi, Fan Yu, Zeng Bo, Song Yi, Yuan Shusheng, He Bin, Liu Bo, Yang Lei, Song Wenjing, Wang Junyuan. Analysis of factors affecting frac hits in horizontal shale gas wells in the southern Sichuan Basin#br#[J]. China Petroleum Exploration, 2021, 26(2): 103-112.

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