第37卷第1期 2016年2月
能源化工
Energy Chemical Industry
强抑制环保钻并液体系及合成基钻井液体系的现场应用
王金利，刘学明，蔡勇
（中国石化胜利石油工程有限公司钻井工程技术公司，山东东营257055）
Vol. 37 No. 1 Feb.，2016
摘要：为解决钻井过程中的环境保护和油气层保护问题，在坨826-平32井的施工中，采用了氧化钙强抑制环保钻井波体系和封堵型合成基钻井液体系。应用结果表明：氟化钙强抑制环保钻并液体系抑制性能优良，解决了上部地层造浆间题，降低了钻屑的产生量；合成基钻并液体系具有良好的封堵防竭性能和油气层保护性能，解决了该区块强水敏性地层和稠油层井壁爆问题。采油效果表明：合成基钻井液有利于保护油气层，该井稳产8Vd，为第一口在此目的层形成产量的井位。
关键词：钻井氯化钙钻井液
支合成基钻井液强抑制
中图分类号：TE254
文献标识码：A
文章编号：20959834(2016)010039-04
Fieldapplicationofenvironmentaldrillingfluidwithstrong
inhibition and synthetic based drilling fluid
WANG Jinli,LIU Xueming，CAI Yong
( Drlling Engineering and Technology Company, Shengli Petroleum Engineering Corporation Limited of SINOPEC, Dongying 257055, China)
Abstract: In order to resolve the environmental protection and reservoir protection problems in the drilling process, the caleium chloride strong inhibition drilling fluid system and plugging synthetie based drilling fluid system are used in the dilling process of Tuo 826H32 well. The application results show that the calcium chloride strong inhibition drilling fluid system has excellent inhibition per-formance, which resolve the problem of the upper strata mud making and reduce the discharge amount of drilling cuttings; the synthetic based drilling fluid system has good sealing performance, collapse prevention performance and reservoir protection performance, so that the casing collapse problem in strong water sensitivity fomation and blocks thick oil layer is resolved effectively. The production results show that the synthetic based drilling fluid is good to reservoir protection. The sustained production of the well is 8 t/d, and it is the first well that developed sustained production of the subject reservoir.
Key words: drilling; caleium chloride drilling fluid; synthetic based drilling fluid; strong inhibition
坨826-平32井位于山东省东营市垦利县境内，构造位置为济阳坳陷东营凹陷北部陡坡带西段坨 826断块。设计完钻井深1755.87m，实际完钻井深 1816.00m，水平位移578.02m，水平段长245.54m。
该井位于黄河腹地，环境保护要求严格，钻井液体系选择必须满足环保及油层保护的需要。为了减少钻井废弃物的产生量，降低井眼扩大率，该并二开直接采用小循环钻进。由于上部地层造浆严重，若使用常规钻井液将难以控制地层水化造浆，会导致钻井液黏切高流变性差，容易引起缩径卡钻，因此，该并上部选用氯化钙强抑制环保钻井
万方数据
液体系，抑制地层黏土水化造浆。对于下部油层井段，若使用常规水基钻井液和油基钻井液，不仅环境污染严重，而且会导致对油气层的严重损害。为了满足环境及油层保护的需要，同时为了降低成本，进行裸眼内钻并液体系转化。该并采用封堵型合成基钻井液体系，首次实现了棵眼内水基至合成
收稿日期：2015-08-28。
作者简介：王金利（1982—)，男，硕士，工程师，现主要从事配浆工艺研究工作。E-mail;wangjinli197.slyt@ sinopec. com; 513482369 qq.com