油井地层压力计算方法研究  

Research on Formation Pressure Calculation Method in Oil Well

作　　者：余碧君[1] 毛伟[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《油气井测试》2014年第6期9-11,73,共3页Well Testing

基　　金：国家科技重大专项课题"特低渗油藏有效开发技术"(2011ZX05013-006)内容

摘　　要：对于低渗透油藏,关井测压力恢复曲线求地层压力存在不出现径向流直线段的问题;利用生产动态资料求取地层压力存在采油指数逐渐变小的问题。针对现有文献的不足,分别提出了应用压力恢复资料、生产动态资料计算地层压力的方法。即对于压力恢复资料,提出了确定压力恢复公式系数的三点法,通过油井实际资料计算验证,理论模型和实测压力恢复数据拟合得很好,用该方法计算地层压力准确可靠;对于产量、流压等生产动态资料,建立了基于拟稳定流的地层压力计算方法,实例预测的地层压力和长关井测得的地层压力极为接近,说明了新方法的可行性。To low porous reservoir,there exists a problem of no radial flowing straight line by using pressure buildup curve to calculate formation pressure and also has a problem of production index decreases by using dynamic data to calculate formation pressure. In view of shortcomings of current literature,calculation methods to calculate formation pressure by using pressure buildup and dynamic data have been proposed respectively. Three-point method has been given to determine pressure buildup equation coefficients for shut-in data. An example shows that theoretical model matches pressure buildup data very well. Formation pressure calculation method is established based on pseudo-steady state for oil rate and flowing pressure data. Predicted formation pressure in a well is close to long term shut-in formation pressure. It shows that the new method is feasible.

关 键 词：地层压力 压力恢复曲线 产量 流压 

分 类 号：TE353[石油与天然气工程—油气田开发工程]