塔河油田碳酸盐岩缝洞型油藏堵水技术  

Study on water plugging technology in fractured-cavity carbonate reservoirs, Tahe oilfield

作　　者：吴文明[1] 秦飞[1] 欧阳冬[1] 何龙[1] 

机构地区：[1]中国石化西北油田分公司工程技术研究院,新疆乌鲁木齐830011

出　　处：《油气地质与采收率》2013年第6期104-107,118,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家"973"项目"碳酸盐岩缝洞型油藏开采机理及提高采收率基础研究"(2011CB201006)

摘　　要：塔河油田碳酸盐岩缝洞型油藏孔、缝、洞储层发育,且非均质性强,底水易从高角度裂缝产出,油井治水难度大,堵水在油田稳油控水方面发挥了越来越重要的作用。经过多年探索攻关,塔河油田碳酸盐岩缝洞型油藏堵水技术取得了较大进展,主要形成了以油井五项基础综合分析和权重分析法为主的堵水选井分析方法。根据塔河油田碳酸盐岩油藏条件及储层特点,有针对性地研发出3类堵剂体系:第1类是可溶性硅酸盐堵剂,其主要优点是抗温抗盐、对轻微漏失井有一定针对性,适于孔缝型储层;第2类是可固化颗粒类堵剂,其主要优点是抗温抗盐、密度可选、强度高,适于缝洞型储层;第3类是有机—无机复合交联堵剂,其主要优点是油水选择性强,适于裂缝型储层及水平井(包括侧钻井)。在此基础上配套堵剂和堵水工艺,形成了具有塔河油田特色的以密度选择性堵水工艺、复合段塞逐级托堵工艺以及堵后控压酸化解堵工艺为主的碳酸盐岩缝洞型油藏堵水技术。Fractured-cavity carbonate reservoirs in Tahe oilfield have a serious heterogeneity, with numerous fissure, hole and cave. The bottom water is easy to breakthrough from high angle fracture, and it's difficult to make water control for producing wells, so, the water plugging becomes important to oil production stabilization and water cut control. There is a significant progress of water plugging technology in fractured-cavity carbonate reservoirs in Tahe oilfield. The factors weight method for selecting well water plugging and five basic factors comprehensive analysis for plugging wells are formed. Three kinds of suitable plugging agents for fractured-cavity carbonate reservoirs are researched and developed. First, the soluble silicate, with good heat resistance and salt tolerance, is appropriate for well with small leakage and seam-hole reservoir. Second, the solidified grain, which has density selectivity and high strength, good heat resistance and salt tolerance as well, is suitable for fractured-cavity wells. Third, the organic-inorganic compound gel, with wateroil selectivity, is fit for fractured wells, horizontal wells and sidetracking wells. Based on plugging agent, the supporting water plugging technologies are formed and applied with good performance, including density selectivity, multistage slug holder plug and control pressure acidification.

关 键 词：碳酸盐岩 缝洞型油藏 堵水技术 堵剂 堵水工艺 塔河油田 

分 类 号：TE358.3[石油与天然气工程—油气田开发工程]