喇萨杏油田开发过程中吸水指数变化规律  

CHANGED LAWS OF THE WATER INJECTIVITY COEFFICIENT IN THE DEVELOPMENT COURSE OF LASAXING OILFIELDS

作　　者：朱丽莉[1] 方艳君[1] 吴梅[2] 张继风[1] 冯程程[1] ZHU Lili FANG Yanjun WU Mei ZHANG Jifeng FENG Chengcheng(Exploration and Development Research Institute of Daqing Oilfield Co Ltd. , Daqing 163712, China PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

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 [2]中国石油勘探开发研究院,北京100083

出　　处：《大庆石油地质与开发》2017年第1期70-74,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项及示范工程"大庆长垣特高含水油田提高采收率示范工程"(2011ZX05052)

摘　　要：在油田注水开发过程中,吸水指数是衡量注水井注入效果好坏的重要指标之一。从渗流理论出发,根据油藏工程原理,以五点法井网为例,建立了无因次吸水指数的理论计算公式,并结合矿场实际,确定了喇萨杏油田不同含水阶段理论吸水指数和实际吸水指数的变化规律,其理论计算结果与应用小井距实际资料计算的吸水指数结果一致,表明该方法具有一定的适用性,可以为油田的合理配产、开发调整提供理论依据。In the development process of the oilfield water injection,the water injectivity coefficient is one of the important indexes measuring the flooding effects of the water injecting well. Embarking from the transfusion theory and according to the principles of oil reservoir engineering,taking the five-point well pattern as an example,the theoretical calculating formula was established for the dimensionless water injectivity index,and moreover combining with the field reality,the changed laws of the theoretical and actual water injectivity coefficients were determined for Lasaxing Oilfields at different stages of the watercut,and furthermore its calculated results were coincident with the computed ones by the actual data of the small well spacing,thus the method is proven to have a certain applicability and can provide the theoretical bases for the reasonable production proration and development adjustments of the oilfields.

关 键 词：吸水指数 压力降 注水压差 注采压差 

分 类 号：TE343[石油与天然气工程—油气田开发工程]