双靶定向井在油田开发中后期调整挖潜中的应用  

Application of double-target directional well to potential tapping of a mature oil field

作　　者：王瑞宇[1] 余传谋[2] 王文忠[2] 王运美[2] 

机构地区：[1]中原石油勘探局开发事业部,河南省濮阳市457532 [2]中原石油勘探局

出　　处：《石油勘探与开发》2000年第3期79-80,共2页Petroleum Exploration and Development

摘　　要：中原油田是断层十分发育的复杂断块油气田，目前已进入开发中后期，稳产难度越来越大，开发调整的主要目的是挖掘剩余油。在近几年中原油田的调整部署中，推广应用了双靶定向井技术，取得显著效果：①充分动用断块高部位剩余油，提高采收率；②完善极复杂断块油藏的注采关系；③开发微型油藏，提高单井经济效益；④定向兼探已知油层之下的新层位，降低滚动勘探风险；⑤单井钻遇油层厚度大且水淹程度低；⑥油井初期产量高，后期补孔潜力大，稳产时间长；⑦单位钻井成本适中，投资回收期短。在精细油藏描述和准确预测剩余油分布的基础上，应用双靶定向井技术可以实现复杂断块油气藏的增储稳产，并通过完善注采井网来增加可采储量。表1（王孝陵摘）Zhongyuan oil field is a complex block-faulted oil field characterized by very welldeveloped fault systems. This oil field is now in its middle-late development stage and it is very hard to keep its stable oilfield production. The main object of development adjustment is to find and recover the remaining oil. Double target directional well techniques are applied and generalized in recent years and the relevant satisfactory results are obtained: ①The remaining oils in higher parts of fault-blocks are fully mobilized to increase the recovery factor. ②Injection-production well systems in a complex blok-faulted oil field are perfected. ③Some microreservoirs are developed, improving single-well economic benefit. ④Some new pays underneath the developed pay zones are penetrated as results of further exploration. ⑤Some thick and weakly flooded singe pays are penetrated. ⑥Well production is high at early peried, and wells will have more intervals for further penetration in later peried. ⑦Wells are pentrated with a moderate cost and capital investment can be recovered in a relatively short time. Based on a sophisticated reservoir description and accurate prediction of remaining oil distribution the application of double-target direction well technique can get a stable oil field production and increase the development oil reserves as well.

关 键 词：定向井 油田开发 中后期 挖潜方案 

分 类 号：TE323[石油与天然气工程—油气田开发工程] TE243