海上稠油油藏多元热流体吞吐开采气窜规律研究  

Research on Gas Channeling Law of Offshore Heavy Oil Reservoir Multi-Component Thermal Fluid Huff & Puff Development

作　　者：袁玉凤 宫汝祥[1] 张伟[1] 王飞[1] 冯祥[1] YUAN yufeng;GONG Ruxiang;ZHANG Wei;WANG Fei;FENG Xiang(Production Optimization R＆d Institute,China Oilfield Services Limited,Tianjin 300450,China)

机构地区：[1]中海油田服务股份有限公司油田生产研究院,天津300450

出　　处：《重庆科技学院学报（自然科学版）》2018年第4期49-52,73,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"海上稠油多元热流体热采机理及配套工艺技术研究"(2011ZX05024-005-001)

摘　　要：多元热流体吞吐开采技术应用于渤海油田10余井次,油田开采程度大幅提升;但油藏存在大孔道,导致井间气窜现象日趋严重,油井的正常生产受到严重影响。针对此问题,以渤海A油田的油藏特点为基础,研究大孔道长度、大孔道渗透率倍数及大孔道位置对气窜规律的影响。研究表明:大孔道的长度及渗透率倍数与气窜程度、气窜时机呈正相关,大孔道与生产井的相对位置不同,其气窜规律也有所差异。Multi-component thermal fluid（ MCTF） huff puff technology has been continuously used for the offshore heavy oil development in over 10 wells of Bohai oilfield,which greatly improves the oil recovery in this area.However,the inter-well gas channeling becomes serious with the existence of large pore path in the reservoir,strongly affecting the oil well normal production. Based on reservoir characteristics of oilfield A in Bohai,the influence of large pore path length,permeability multiple and location on gas channeling is studied respectively. Results show that large pore path length and permeability multiple are directly proportional to gas channeling severity and timing. While the different relative locations of large pore path to the production well result in difference in gas channeling law.

关 键 词：多元热流体 吞吐开采 大孔道 气窜规律 气窜评价 

分 类 号：TE345[石油与天然气工程—油气田开发工程]