注入水对地层油高压物性影响实验研究  

Laboratory Study on Effect of Injected Water on PVT Parameters of Formation Oil

作　　者：胡绍彬[1] 陈长亮[1] 刘少克[1] 王鹏[2] 

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]中国石油塔里木油田分公司油气工程研究院,新疆库尔勒841000

出　　处：《当代化工》2016年第1期16-17,21,共3页Contemporary Chemical Industry

基　　金：黑龙江省自然科学基金项目(E201338);EOR教育部重点实验室开放课题(NEPU-EOR-2014-012)

摘　　要：为揭示注入水对地层油高压物性的影响规律,采用从油田获取的油、气、水样品,开展了不同含水百分比条件下地层流体高压物性模拟实验。结果表明:随着水或聚合物溶液的注入,模拟地层油的饱和压力和溶解气油比都降低,且降低的幅度随含水百分比的增大而增大。当含水百分比为80%时,注水使模拟地层油的饱和压力降低10.33%、溶解气油比减小16.00%,注聚合物溶液使模拟地层油的饱和压力降低8.75%、溶解气油比减小12.93%。不同含水百分比条件下,注水时气水比平均值为2.09 cm3/g,注聚时气水比平均值为2.01 cm3/g。注入水进入油藏与地层油充分接触后会从油相夺取部分气体成为含气水。In order to reveal the influence of injected water on the PVT parameters of formation oil, high pressure property tests with various water contents were carried out by using oil, gas and water samples obtained from oilfield. The results show that： with the water or polymer solution injection, the saturated pressure and dissolved gas oil ratio of the formation oil decrease, and the reducing degree increases as the increase of water content. At the value of 80% of water percentage, the saturation pressure of formation oil is reduced by 10.33%,the ratio of dissolved gas oil is reduced by 16% as water is injected, and the saturated pressure is reduced by 8.75% and the dissolved gas oil ratio is reduced by 12.93% as polymer solution is injected. The average value of gas to water ratio is 2.09 cm3/g for water injection and 2.01 cm3/g for polymer solution injection.The injected water will become gassy water as it contacts and captures part of gas from the oil phase.

关 键 词：地层油 饱和压力 气油比 气水比 室内实验 

分 类 号：TE124.1[石油与天然气工程—油气勘探]