摘要
西峰油田正式投入开发以来,采取超前注水方式补充地层能量,注水几年后出现注水压力升高、注水量降低的问题。为了查找出现这一问题的原因,进行了储层物性及流动性研究。所研究的储层黏土矿物中伊利石和高岭石的相对含量约为30%。多组岩心体积流量实验及正反向流动实验表明,储层中存在明显的微粒运移现象是导致注水井注水困难的主要因素之一。这一结论对油田注水井增注措施的选择提供了一定的依据。
The exploitation of Xifeng Oilfield started in 2003 and formation energy was supplied by preceding water injection. The problems of high injection pressure and low injection capacity appeared after some years. In order to survey the reasons, the research on physical property and liquidity of reservoir has been done. It is found that the content of illite and kaolinite in reservoir is about 30%.The particulate movement has been proved through the volume fluxes experiment of many group cores and the positive and negative direction flow experiment, which is one of the main reasons about water injection difficulty in water injection well. This can provide certain evidences for selection of enhancing injectivity measure for water injection well.
出处
《断块油气田》
CAS
2008年第2期81-82,共2页
Fault-Block Oil & Gas Field
关键词
西峰油田
注水
微粒运移
流动实验
Xifeng Oilfield, water injection, particulate movement, flow experiment.
