缝洞碳酸盐岩凝析气藏注水替凝析油实验  

EXPERIMENT OF WATERFLOODING REPLACED CONDENSATE FOR FRACTURED-CAVERNOUS CONDENSATE GAS RESERVOIRS

作　　者：彭松[1] 郭平[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《大庆石油地质与开发》2015年第1期68-72,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：高校博士点基金资助项目(20115121110002)

摘　　要：缝洞型碳酸盐岩油气藏是一种复杂、特殊类型的油气藏,其储层以缝洞和裂缝-孔洞为主,具有双孔隙网络特征及较强的非均质性,渗流规律复杂,实现该类油气藏的高效开发是诸多石油工作者关心并一直致力于研究的问题。借鉴在缝洞型碳酸盐油藏中应用效果较好的"注水替油"方法,建立了缝洞型碳酸盐岩凝析气藏"多级压力注水替凝析油"方法,并以高含凝析油的TZ86井为例,采用露头碳酸盐岩经过人工造缝造洞技术制成全直径缝洞型岩心,在原始地层条件(140.6℃,58 MPa)下进行了多级注水替凝析油物理模拟实验,结果表明采用多级注水替凝析油方式开发缝洞型碳酸盐岩凝析气藏可取得较好效果。The fractured-cavernous carbonate petroleum reservoir is one kind of complex and special oil and gas reservoirs, which are mainly composed of fissures and fracture-caverns and possess dual-porosity network character- istics, rather stronger anisotropy, and complex flow laws, so how to highly effectively develop this kind of reservoir is the studied issue for a lot of oil workers all the time. With the help of the method of “waterflooding replaced oil” well adopted in the fractured-cavernous carbonate oil reservoirs, The approach of “ multi-level pressure waterflood- ing replaced condensate” for the fractured-cavernous carbonate gas reservoirs is established, and furthermore taking high-condensate Well TZ86 as an example, by means of full diameter fractured-cavernous cores made by the manu- facturing technique of artificial fractures and caves from the outcrop carbonate rock, the physical simulating experi- ments of multi-level waterflooding replaced condensate are conducted under the initial reservoir conditions （ 140.6℃ and 58 MPa）. The experimental results show that the much better effects are achieved by the multi- level waterflooding replaced condensate method for the development of the fractured-cavernous carbonate condensate gas reservoirs.

关 键 词：缝洞碳酸盐岩 凝析气藏 高含凝析油 注水替凝析油 高温高压 全直径岩心 

分 类 号：TE372[石油与天然气工程—油气田开发工程]