双高油田复合调驱技术研究及应用  

Compound profile control and flooding technology for oilfields with high water-cut and high producing degree

作　　者：苏毅 赵德喜 刘宁 徐浩 石端胜 徐良 华科良 SU Yi;ZHAO Dexi;LIU Ning;XU Hao;SHI Duansheng;XU Liang;HUA Keliang(Tianjin Branch of CNOOC(China)Ltd.,Tianjin 300461,China;CNOOC Engineering Technology Drilling&Production Co.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300461 [2]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《复杂油气藏》2018年第2期79-83,共5页Complex Hydrocarbon Reservoirs

基　　金："十三五"国家科技重大专项项目(2016ZX05058-003-001)

摘　　要：渤海QK油田西高点区块属于高含水、高采出程度的双高油藏,该区块非均质性较强,注水井各层吸水不均,存在注入突进等问题。为此,开展了复合调驱技术研究,该技术运用乳液交联调剖、预交联剂驱油等复合体系,实现调驱结合,改善注水开发效果。矿场单井组试验结果表明:复合调驱体系在双高油田中能够有效封堵水流优势通道,改善油水流度比,扩大波及体积,实现深部调驱,提高剩余储量动用程度,有效改善注水开发效果。2017年4月至12月期间,7口调驱受益井累计增油3 978.2 m^3,目前仍有效果。The block located in the western peak of QK Oilfield in Bohai belongs to a kind of reservoirs with high water-cut and high producing degree.There are stronger heterogeneity,nonuniform absorption profile of water injection wells and breakthrough of water injection in this block.So it was carried out studies on the compound profile modification and flooding technology,which consists of the emulsion crosslinked profile and the precrosslinking agent flooding,realizing the combination of profile control and flooding and improving the waterflooding development effect.The results of the single well-group showed that the composite displacement system can effectively block the preferential migration passage of water,improve the oil-water mobility ratio,enlarge the swept volume,realize the deep profile control,raise the producing degree of remaining reserves,and effectively improve the waterflooding development effect.From April to December,2017,the cumulative increased oil production was 3 978.2 m 3 in seven wells and the effect is still continuous.

关 键 词：高含水 高采出程度 非均质 复合调驱 提高采收率 

分 类 号：TE357[石油与天然气工程—油气田开发工程]