设计、施工、监测

库车山前超深裂缝性储层压裂效果评价

  • 张朝阳 ,
  • 苏丹丹 ,
  • 杨丽红 ,
  • 翁定为 ,
  • 杨战伟
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  • 1.中国石油勘探开发研究院,北京 100083;
    2.中国石油集团渤海钻探工程有限公司井下作业分公司,河北 任丘 062550;
    3.华北油田分公司 第一采油厂,河北 任丘 062550
张朝阳(2000—),男,河南太康人,博士生,主要从事酸化酸压方向的研究工作。E-mail:zhaoyangzhang@petrochina.com.cn
翁定为(1981—),男,湖北枝江人,博士,教授级高级工程师,主要从事油气藏储层改造技术研究工作。E-mail:wendw69@petrochina.com.cn

收稿日期: 2025-04-09

  网络出版日期: 2026-03-03

基金资助

中国石油天然气集团有限公司基础性前瞻性项目(2021DJ45)

Fracturing Effect Evaluation for Ultra-Deep Fractured Reservoirs in Kuqa Piedmont

  • Zhang Zhaoyang ,
  • Su Dandan ,
  • Yang Lihong ,
  • Weng Dingwei ,
  • Yang Zhanwei
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  • 1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, P.R. China;
    2. Downhole Service Company of China Petroleum Bohai Drilling Engineering Co., Ltd., Renqiu, Hebei 062550, P.R. China;
    3. The First Oil Production Plant of PetroChina Huabei Oilfield Company, Renqiu, Hebei 062550, P.R. China

Received date: 2025-04-09

  Online published: 2026-03-03

摘要

库车山前超深裂缝性储层具有高温、高压及非均质性强等特征,压裂效果影响因素多、评价难度大。结合有限元模拟技术与损伤力学理论,构建了“流—固—温”三场耦合的裂缝扩展模型,建立了压裂改造效果评价方法,分析了井底压力、地层压力、地应力、天然裂缝密度等参数对压裂效果的影响。结果表明:井底压力和地层压力越高,压裂改造效果越好;最大、最小水平主应力差异越大,最大主应力方向的裂缝半长越大,当差应力为30 MPa时,压裂改造范围最大;天然裂缝密度越大,压裂改造效果越好;在区块内2口生产井进行验证,基于研究成果可对压裂位置进行优化。研究成果可为库车山前超深裂缝性储层高质量上产提供支撑。

本文引用格式

张朝阳 , 苏丹丹 , 杨丽红 , 翁定为 , 杨战伟 . 库车山前超深裂缝性储层压裂效果评价[J]. 地下空间与工程学报, 2026 , 22(1) : 291 -298 . DOI: 10.20174/j.JUSE.2026.01.30

Abstract

The ultra-deep fractured reservoir in Kuqa Piedmont has the characteristics of high temperature, high pressure, and strong heterogeneity. The hydraulic fracturing effect has many influencing factors and is difficult to evaluate. Combined with finite element simulation technology and damage mechanics theory, a fracture propagation simulation model coupling "fluid-solid-temperature" three-field is constructed, and an evaluation method for the fracturing effect is established. The influence of parameters such as fracturing fluid injecting pressure, formation pressure, ground stress, and natural fracture density on the fracturing effect is analyzed. The results show that: The higher the fracturing fluid injecting pressure and formation pressure, the better the fracturing effect; the greater the differential stress between the maximum horizontal principal stress and the minimum horizontal principal stress, the greater the fracture half-length in the direction of the maximum principal stress. When the differential stress is 30 MPa, the fracturing range is the largest. The greater the density of natural fractures, the better the fracturing effect. The research results have been verified in two production wells in the block. Based on the research results, the fracturing position can be optimized. The research results can provide strong support for the high-quality production of ultra-deep fractured reservoirs in Kuqa Piedmont.

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