摘要
苏里格气田是典型的致密砂岩气藏,苏75区块一般采用压裂投产方式。随着滚动扩边的进行,储层条件变差,常规水力压裂不能满足生产要求。文章借鉴体积压裂思路,在分析储层地质特征、岩石力学参数、岩石矿物组分的基础上,论证苏75区块盒8段储层可压性,提出了一种"最优缝网+高导流主缝"的体积压裂改造模式。使用Meyer软件对压裂设计参数进行优化,并进行现场试验,效果显著,平均日产气量18.4×10~4m^3,证实了以"最优缝网+高导流主缝"为改造主体的致密气藏水平井压裂技术的有效性,为苏75区块体积压裂改造积累了经验。
Sulige gasfield is a typical tight sandstone gas reservoir. Hydraulic fracturing was often used. However,conventional fracturing was not adequate as production progressed.Based on the analysis of geological characteristics,rock mechanics and rock composition,the fracture development tendency in He-8 formation at Block Su-75 was evaluated,and new volumetric fracturing mode was proposed,combining the concepts of optimal fracture network and high-conductivity main fracture. And through optimization of fracturing parameters by Meyer software,the new method was used in field with remarkable results,the average gas daily production reaching 18. 4 × 10~4m^3/d,its effectiveness got verified.
出处
《钻采工艺》
CAS
北大核心
2017年第2期49-51,8,共3页
Drilling & Production Technology
基金
中石油重大专项"华北油田上产稳产800万吨关键技术研究与应用"(2014E-35)
油田公司项目"苏75区块压裂工艺技术优化"(2015-HB-F01)
关键词
体积压裂
水平井
裂缝参数
苏75区块
volumetric fracturing
horizontal well
fracture parameter
Su75 block
