第38卷第3期 2016年5月
石
采工
钻油
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2016)03039203
DOI:10.13639/j-odpt.2016.03.022
塔河油田井组注氮气提高采收率技术
李满亮周洪涛”张堂
1.中国石化西北油国分公司；2.中国石油大学（华东）
Vol. 38 No. 3
May2016
引用格式：李满亮，周洪涛，张莹.塔河油田并组注氮气提高采收率技术[』】.石油钻采工艺，2016,38(3)：392-394.
摘要：落河油田碳酸盐常缝润型油藏经过多年开发后底水维进，水驱效果逐新变差，剩余油主要以阔楼油的形式富集。为了提高油减开发效果，2014年塔河油在A单元深索多并缝润单元并组注氮气先乎试验，开展并组注气后一年间邻并受效逐渐显现，载至2015年8月已增油3×10*t，说明并组注氮气可以有效驱替并间调楼油。试验结果表明，高注低采并组注气量高，见效慢、波及体积大，而低注高采并组见效快但是葛发生气审，并组注氮气采油技术是一种提高采收率的有效技术手段
关键词：阁楼油；注氮气；提高采收率；塔河油田
中图分类号：TE357
文献标识码：B
Enhancing oil recovery by nitrogen injection in well group of Tahe Oilfield
LI Manliang,ZHOU Hongtao, ZHANG Ying
1. SINOPEC Northwesr Oifeld Company, Urumchi, Xinjiang 830011, China; 2. China University of Petroleumt (Eas China), Qingdao, Shandong 266580, Ching
Citation: LI Manliang, ZHOU Hongtao, ZHANG Ying. Enhancing oil recovery by nitrogen injection in well group in Tahe Oilfield [ J] . Oil Drilling & Production Technology, 2016, 38(3): 392-394
Abstract: Over years of development, the carbonate fracture-cavity reservoirs in the Tahe Oilfield suffered bottom water coning. making the waterflooding effect become gradually poor, and the remaining oil is mainly enriched in the fom of attic oil. For the purpose of improving the reservoir development effect, a pilot test of nitrogen injection in well group was conducted in the multiwell fracture-cavity unit A of the Tahe Oilfield in 2014. The response of offset wells gradually appeared. As to August 2015, 3x10° t incremental oil had been obtained, showing that the nitrogen injection in well group can effectively displace the interwell attic oil. The pilot test results show that the well group of injection in high permeability layer and production from low permeability layer is characterized by high gas injection rate, slow response and large swept volume, whereas the well group of injection in low permeability layer and production from high permeability layer is characterized by fast response but easy gas breakthrough. The oil recovery technology of nitrogen injection in well group is an effective technique for enhancing the oil recovery
Key words: attic oil; nitrogen injection; enhanced oil recovery; Tahe Oilfield
塔河油田奥陶系油藏是经过多期构造运动和古岩溶共同作用形成的碳酸盐岩缝洞型油藏！1。油藏特点表现为：非均质性极强，基质孔隙度低，基本不具备储油能力，大型洞穴是主要的储集空间，裂缝是主要的渗流通道，流动模式以溶洞中的管流模式和
裂缝-孔洞中的渗流为主「2]。塔河油田A单元前期主要通过衰露开发后进行单元注水来缓解含水率上升的矛盾，在采用常规注水开发方式后，单元整体进人高含水后期，注人水沿缝洞水审，整体驱油效率低，稳产时间短，采出程度低，需要探索有效提高采
第一作者：李满亮(1982-),2006年半业于中国石大学率东)石油工程专业，现主要队事油气田开发研究和采油、采气的现场管理工作
工程师。通讯地址：(830011)新路岛鲁术券市长券路西表油图分公司。电语；0996-4688563。E-mail:269362240@qq-com
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