一维水驱油脉动周期注水数值模拟研究  

Numerical simulation of one-dimensional water drive oil pulsating periodic water injection

作　　者：牛智浩 张旭 刘朕之 宋婷 金心岫 武继强 NIU Zhihao;ZHANG Xu;LIU Zhenzhi;SONG Ting;JIN Xinxiu;WU Jiqiang(School of Petroleum Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Oil Production Plant 11 of PetroChina Changqing Oilfield Company,Qingyang Gansu 745003,China;Oil Production Plant 2 of PetroChina Changqing Oilfield Company,Qingcheng Gansu 745113,China;China University of Petroleum(Beijing),Beijing 102249,China;Dongsheng Company of Shengli Oilfield,Dongying Shandong 257000,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]中国石油长庆油田公司第十一采油厂,甘肃庆阳745003 [3]中国石油长庆油田公司第二采油厂,甘肃庆城745113 [4]中国石油大学(北京)石油工程学院,北京102249 [5]胜利油田东胜公司,山东东营257000

出　　处：《石油化工应用》2022年第1期41-43,50,共4页Petrochemical Industry Application

基　　金：西安石油大学研究生创新与实践能力培养项目,项目编号:YCS21113089。

摘　　要：为了研究脉动周期注水作用及影响因素,进一步改善油藏水驱开发方式及效果,通过油藏数值模拟方法,在一维水驱油驱替过程基础上,分别探究在连续注水和脉动周期注水下水驱前缘的传播规律,评估脉动周期注水的可行性,研究不同工作制度下脉动周期注水的提采效果。结果表明:在油井见水前,结合一维水驱油驱替过程,在累计注入量一定的情况下,能求解出不同工作制度下脉动周期注水的含水饱和度与含水饱和度位置分布的关系;存在一个最佳注入周期,在最佳注入周期下水驱油效果最好;相较于连续注水,脉动周期注水驱替效果明显,洗油效率更高。所得结论可为油藏脉动周期注水制定合理的工作制度提供了有效依据。In order to study the effect and influencing factors of pulsating periodic water injection,and further improve the development mode and effect of reservoir water flooding,through reservoir numerical simulation method,on the basis of one-dimensional water flooding oil displacement process,the propagation law of water flooding front and pressure wave under continuous water injection and pulsating periodic water injection were explored,the feasibility of pulsating periodic water injection was evaluated,and the recovery effect of pulsating periodic water injection under different working systems was studied.The results show that the relationship between water saturation and water saturation position distribution of pulsating periodic water injection under different working systems can be solved before water breakthrough in oil wells,combined with one-dimensional water flooding displacement proc-ess and under the condition of a certain cumulative injection volume.There is an optimal injection cycle,and the water flooding effect is the best under the optimal injection cycle,compared with continuous water injection,pulsating cycle water injection has obvious displacement effect and higher oil washing efficiency.The conclusion can provide effective basis for formulating reasonable working system of pulsating periodic water injection in reservoir.

关 键 词：一维驱替 脉动周期注水 水驱前缘 数值模拟 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]