石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (6): 797-800,805.doi: 10.11743/ogg20080614

• 油气勘探方法实践 • 上一篇    下一篇

应用偏相关+灰关联方法进行致密砂岩气藏压裂地质选层

谢润成1, 周文2, 高雅琴3, 郭新江4, 葛善良1, 张凌子1   

  1. 1. 成都理工大学 能源学院,四川 成都 610059;
    2. 成都理工大学"油气藏地质及开发工程"国家重点实验室,四川 成都 610059;
    3. 中国石油化工股份有限公司 西南分公司 石油勘探开发研究院,四川 成都 610081;
    4. 中国石油化工股份有限公司 西南分公司 工程技术研究院,四川 德阳 618000
  • 收稿日期:2008-10-08 出版日期:2008-12-24 发布日期:2012-01-16
  • 基金项目:

    中石化"川西特低渗透深层砂岩气藏压裂技术研究与应用"(P02034-T01)

Application of partial and grey correlation methods to layer selection for fracturing in tight sand gas reservoirs

Xie Runcheng1, Zhou Wen2, Gao Yanqin3, Guo Xinjiang4, Ge Shanliang1, Zhang Linzi1   

  1. 1. College of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. State Key Laboratory of Oil &, Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Southwest Branch of SINOPEC Petroleum Exploration and Development Research Institute, Chengdu, Sichuan 610081, China;
    4. Research Institute of SINOPEC Southwest Company, Deyang, Sichuan 618000, China
  • Received:2008-10-08 Online:2008-12-24 Published:2012-01-16

PDF (PC)

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摘要：

压裂选层需要考虑的因素多而复杂,并且具有高度非线性特征,选层时除了利用经验类比外,还需要运用非线性数学理论才可能满足现场需要。通过对现有备种方法的对比分析,建立了偏相关+灰关联压裂地质选层方法。依靠提取待压层段有效厚度、孔隙度、地应力差及顶底隔层平均厚度等14项特征参数进行的优选压裂层段的偏相关+灰色关联度计算,其结果与现场压裂测试结果对比表明,该方法计算简单快速,结果可靠,并对于同类型气藏的压裂评井选层具有一定的借鉴意义。

关键词: 灰关联, 偏相关, 压裂, 选层, 致密储层

Abstract:

Layer selection for fracturing requires thorough consideration of many factors,which represent clear nonlinear characteristics.In addition to empirical analogy methods,nonlinear mathematical theories are also nee-ded to meet the requirements of fracturing operation.A geological optimization method consisting of partial and grey correlation for selecting layers for fracturing operation has been established after an analysis of all available layer selection methods.Fourteen parameters(such as net thickness,porosity and stress difference of layers to be fractured,and the average thickness of top and bottom barriers) are involved in the application of the method. The calculation result shows a good coincidence with that of in-site fracturing test.The method features in easy and fast calculation and yielding reliable results,and therefore can be used as reference in well evaluation and layer selection for fracturing in the same types of gas reservoirs.

Key words: grey correlation, partial correlation, fracturing, layer selection, tight reservoir

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