Xinjiang Oil & Gas ›› 2025, Vol. 21 ›› Issue (4): 56-64.DOI: 10.12388/j.issn.1673-2677.2025.04.007

• OIL AND GAS DEVELOPMENT • Previous Articles     Next Articles

Prediction of Sand Production in Underground Gas Storage Rebuilt from a Sandstone Reservoir under Multi-Cycle Alternating Injection-Production

LIU Tuanhui1，ZHAI Yujia1，WANG Wei1，ZHU Zhiyong1，YUAN Wutao2，JIA Shanpo2   

  1. 1. Hebei Gas Storage Branch，PetroChina Huabei Oilfield Company；

    2. Bohai⁃Rim Energy Research Institute，Northeast Petroleum University，

  • Received:2025-02-19 Revised:2025-07-25 Accepted:2025-09-30 Online:2025-11-17 Published:2025-11-17

多周期交变注采下砂岩气藏型储气库出砂预测

刘团辉1，翟羽佳1，王薇1，朱志勇1，袁武韬2，贾善坡2   

  1. 1.中国石油华北油田河北储气库分公司；

    2.东北石油大学环渤海能源研究院

  • 通讯作者: 贾善坡（1980-），2009年毕业于中国科学院武汉岩土力学研究所岩土工程专业，博士，教授，目前从事地下储气库及二氧化碳封存等研究工作。（E-mail）jiashanporsm@163.com
  • 作者简介:刘团辉（1985-），2017年毕业于东北石油大学地质工程专业，硕士，高级工程师，目前从事天然气开发及储气库建设方面的研究。（E-mail）349318125@qq.com
  • 基金资助:

    国家自然科学基金项目“气藏型储气库泥岩盖层的疲劳效应及密封性动态演化机理研究”（42072166）

PDF (PC)

Abstract:

Most of the underground gas storage （UGS） facilities built in China are rebuilt from sandstone gas reservoirs. They are subjected to increased risks of sand production due to the cumulative alternating damage to the reservoir rock structure after multi-cycle alternating injection and production. In order to effectively predict sand production risks，an alternating mechanics experiment considering multi-parameter sensitivity was designed by combining the stress field of the borehole wall of the injection-production well and the shear failure criterion of rocks. Based on the alternating mechanics experiment，the degree of rock strength damage was calculated，and a sand production critical drawdown pressure model based on rock damage degree was proposed. Research showed that the stress field of the reservoir dynamically changes with the production of the gas storage，resulting in a change in the difference between the circumferential and radial stresses of the surrounding rock of the borehole wall of the injection-production well. At the same time，the stress difference also changes along the wellbore circumference. Under the alternating loads，the cumulative damage of rocks grows with the increasing water saturation （for the same particle sizes of rocks） and larger particle sizes of rocks （for the same water saturations of rocks）. The sand production critical drawdown pressure predicted using the proposed method is 11.41 MPa in the early stage of gas production and 3.97 MPa in the late stage. This study provides a new method for determining experimental parameters in alternating mechanics，as well as a new method for judging sand production in alternating injection and production for UGS facilities to guide the UGS production planning and control.

Key words:

gas storage, alternating load, damage, sand production, critical drawdown pressure

摘要：

中国已建储气库以砂岩气藏型储气库居多，砂岩气藏型储气库进行多周期交变注采，储层岩石结构不断累积交变损伤，导致了出砂风险大大提高。为了有效预测出砂风险，结合注采井井壁应力场和岩石剪切破坏准则，设计了考虑多参数敏感性的交变力学实验，根据交变力学实验计算了岩石强度损伤程度，提出了一种基于岩石损伤程度的临界出砂生产压差模型。研究表明，储层应力场随储气库生产而产生动态变化，导致注采井井壁围岩周向应力与径向应力的差值发生变化，同时应力差值也会随着井周角变化而变化；交变荷载作用下，同粒径的岩石含水饱和度越高，同含水饱和度的岩石粒径越大，岩石累积承受的损伤越大；应用岩石损伤出砂模型预测储层临界出砂压差，采气初期临界出砂压差为11.41 MPa，采气末期临界出砂压差为3.97 MPa。此研究提供了一种新的交变力学实验参数确定方式，同时为储气库提供了一种新的交变注采出砂判断方法，指导了储气库的生产计划与控制。

关键词:

储气库, 交变荷载, 损伤, 出砂, 临界压差

CLC Number: 

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