ZY-APD高性能水基钻井液研究及在川南地区的应用  

ZY-APD high-performance water-based drilling fluid and its application to southern Sichuan Basin

作　　者：赵虎 孙举 司西强 王善举 王忠瑾 Zhao Hu;Sun Ju;Si Xiqiang;Wang Shanju;Wang Zhongjin(Research Institute of Drilling Engineering Technology,Sinopec Zhongyuan Oilfield Service Corporation,Puyang,Henan 457001,China)

机构地区：[1]中石化中原石油工程有限公司钻井工程技术研究院

出　　处：《天然气勘探与开发》2019年第3期139-145,共7页Natural Gas Exploration and Development

基　　金：中国博士后科学基金“钻井液用两性甲基葡萄糖苷的合成及其作用机理”(编号:2012T50641);中石化集团公司科技攻关项目“页岩油气水平井水基钻井液技术研究”(编号:JP14021)

摘　　要：四川盆地川南页岩气水平井开发普遍存在井壁失稳、完井作业摩阻大等问题,因此提高钻井液的井壁稳定和润滑防卡能力是页岩气钻完井的首要任务。烷基糖苷衍生物钻井液是以糖苷衍生物(阳离子烷基糖苷CAPG和聚醚胺基烷基糖苷NAPG)等为核心主剂的高性能水基钻井液,简称ZY-APD钻井液。通过分析该钻井液的井壁稳定和润滑作用机理,形成钻井液配方,并进行综合性能评价。在川南黄金坝和长宁区块应用3口井。研究与应用结果表明:①该钻井液对川南龙马溪组页岩井壁稳定周期较长;②润滑性与同密度油基钻井液相当;③长期稳定性良好,便于维护与回收利用;环保性能优异;④与区块内国内外同类钻井液相比,技术和成本优势明显,实现了国产高性能水基钻井液质的突破。There are two major problems for the development of shale-gas horizontal wells,southern Sichuan Basin,such as borehole wall instability and high frictional resistance in completion.Therefore,improving this stability and lubrication anti-sticking ability of drilling fluid is the primary task.One kind of drilling fluid based on alkyl glycoside derivative is the high-performance water-based drilling fluid with glycoside derivatives [with cationtic alkyl glycoside (CAPG) and polyether amine alkyl glycoside (NAPG)] as the soul,so-called ZY-APD drilling fluid.In this study,the formula of ZY-APD drilling fluid was prepared by analyzing its action mechanisms of borehole wall stability and lubrication.Then,its performance was evaluated comprehensively.Finally,it was applied to 3 wells in Huangjinba and Changning blocks,southern Sichuan Basin.Results show that (1) ZY-APD drilling fluid may stabilize borehole wall over the long term for Longmaxi shale,southern Sichuan Basin;(2) its lubricity is equivalent to that of oil-based one with the same density;(3) its long-term stability is good and convenient for maintenance and recycle,and its environmental protection performance is excellent;and (4) compared with other similar drilling fluid produced at domestic and foreign used for this block,it’s significantly advantageous in technology and cost.Therefore,the essential breakthrough of high-performance water-based drilling fluid is made.

关 键 词：高性能水基 烷基糖苷衍生物 页岩气 钻井液 

分 类 号：TE254[石油与天然气工程—油气井工程]