碳酸盐岩缝洞型油藏高压注水技术研究  

High Pressure Water Injection Technology for Fractured Vuggy Carbonate Reservoir

作　　者：侯献海 HOU Xian-hai(Sinopec Northwest Oilfield Branch, Urumqi 830011, Xinjiang, China)

机构地区：[1]中国石化西北油田分公司,新疆乌鲁木齐830011

出　　处：《承德石油高等专科学校学报》2022年第1期13-19,共7页Journal of Chengde Petroleum College

基　　金：国家科技重大专项(塔里木碳酸盐提高采收率关键技术示范工程):2016ZX05053。

摘　　要：碳酸盐岩缝洞型油藏以缝洞为主要储渗空间,缝洞体空间发育孤立,连通性较差,单井井控缝洞规模有限。针对常规注水、注气、酸压无法实现远井缝洞体储量高效采出,导致单井采收率较低的问题,开展了碳酸盐岩缝洞型油藏高压注水研究。通过现场实测高压注水摩阻,计算地层裂缝闭合压力、延伸压力和破裂压力,证明高压注水压力可以达到地层延伸压力,激活天然裂缝,突破孤立缝洞体屏障,提高远井缝洞体储量动用。现场试验表明,在定容型碳酸盐岩缝洞型单井实施高压注水可以有效提高单井产量和储量。Fractured vuggy carbonate reservoirs use fractures and caves as the main storage and seepage space,and the fractured vuggy bodies are developed in isolation and have poor connectivity.The scale of single-well controlled fractures and caves is limited.To solve the problems such as conventional water injection,gas injection,and acid fracturing,which cannot achieve efficient recovery of far-well fractured and cavernous reserves and result in a low recovery rate,high-pressure water injection research has been carried out.Through field measurement of high-pressure water injection friction and calculation of formation fracture closure pressure,extension pressure and rupture pressure,it is proved that high-pressure water injection pressure can reach formation extension pressure,activate natural fractures,break through barriers of isolated fractures and caves,and increase the production of remote well fractures and caves.Field tests show that high-pressure water injection can effectively increase the production and reserves of a single well in a fixed volume fractured vugggy carbonate single well.

关 键 词：缝洞型油藏 高压注水 摩阻 延伸压力 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]