高凝油油藏定点测压井不停抽压力加密监测方法探讨  

Discussion of non stop infill pressure monitoring at selected points high pour point oil reservoir

作　　者：杨堃[1] 杨延明[1] 

机构地区：[1]河南石油勘探局开发处,河南南阳473132

出　　处：《特种油气藏》1999年第4期20-24,共5页Special Oil & Gas Reservoirs

摘　　要：方法　根据达西定律 ,从高凝油油藏的矿场生产特点出发 ,首先建立油井生产压差与井筒产液量之间的数学关系模型 ,进而通过历史拟合方法 ,建立地层压力与井筒产液量和井底流压之间的定量关系式。目的　在不停抽情况下 ,根据高凝油油井地面生产资料随时定量分析地层压力变化情况 ,既起到加密求取地层压力资料作用 ,又不因长时间停井结蜡而影响产量。结果　以国内H油区S高凝油油田B单元 8口井共 49个测压点不停抽压力加密监测方法计算 ,其结果比较切合实际 ,平均相对误差仅 1 6 7% ,可以作为重点变化单元动态分析的定点测压的辅助手段。结论　定点测压井不停抽压力加密监测方法适用于高凝油油藏 ,并可作为一种油藏动态分析中压力变化趋势预测的重要辅助手段 ,在油田矿场单元动态分析及动态调配方面具有一定的参考价值。Method Based on Darcy principle and field production characteristics of high pour point reservoir, first establish numerical relationship model between production pressure difference of oil well and fluid produced in wellbore, then draw out quantitative relationship equation between formation pressure and fluid produced in wellbore and flow pressure of bottom hole through history matching. Purpose\ To analyze change of formation pressures quantitatively according to surface production data of high pour point oil well under continuous pumping conditions; therefore to obtain fomation pressure data without affecting production caused by wax precipitation from long time shut in. Result\ Taking 49 points of 8 wells in unit B, S high pour point oil field, H oil province in China for example, relatively practical pressure results are obtained under non stop pumping conditions for infill monitoring with mean relative error 1 67%. Consequently, this method can be used as assisting way to select presure testing points in analyzing performance of important changing units. Conclusion\ Measuring and monitoring pressure of selected points without stopping pumping is applicable for high pour point oil reservoir, and can act as a signifcant assisting means in analyzing reservoir production performance. In addition, it is a method of certain reference significance in adjusting performance and studying oil field unit performance.

关 键 词：高凝油油藏 定点测压井 地层压力 压力加密监测 

分 类 号：TE345[石油与天然气工程—油气田开发工程] TE331