异常高压油藏油层内部压力梯度探讨  

RESEARCH OF PRESSURE GRADIENT FOR ABNORMAL HIGH PRESSURE RESERVOIRS

作　　者：万文胜[1] 杜军社[1] 王国先[1] 

机构地区：[1]新疆油田公司准东采油厂勘探开发研究所,新疆阜康831511

出　　处：《新疆石油天然气》2006年第3期51-54,共4页Xinjiang Oil & Gas

摘　　要：在整理异常高压油藏压力与深度关系曲线时,常常发现要么压力点子分散,以为是压力解释不准确所至。要么成直线关系的点子回归出的油层内压力梯度值非常高,甚至会远远超过上覆岩层重量所造成的梯度。本文应用流体静力学原理讨论了油层层内压力梯度,从理论上得出,同一压力系统的油层层内压力梯度只与地层条件下的流体密度有关。利用压力梯度曲线可以判断油层的连通性。Based on the analysis of correlation of pressure and depth for abnormal high pressure reservoirs,dispersing pressure points often are found or regressed pressure gradients are very high,which are greater than one of overlaying rock.Pressure gradients of reservoirs with fluid static theory are studied in the paper and it is concluded that the pressure gradient of the reservoirs of the same hydrodynamic system is related to fluid density under the condition of reservoir.

关 键 词：油气藏 异常高压 压力梯度 

分 类 号：TE311[石油与天然气工程—油气田开发工程]