义284区块定向防塌钻井液技术  

The anti-caving drilling fluid technology during the process of directional drilling in Yi 284 block

作　　者：邱春阳 宋翔远 孙金波 秦涛 刘霞继 王伟 QIU Chunyang;SONG Xiangyuan;SUN Jinbo;QIN Tao;LIU Xiaji;WANG Wei(Drilling Fluid Technology Service Center of Shengli Oilfield Company,SINOPEC,Dongying 257000,China;Difficult to Produce Reserves Project Department of Shengli Oilfield Company,SINOPEC,Dongying 257000,China)

机构地区：[1]中石化胜利石油工程有限公司钻井液技术服务中心,山东东营257000 [2]中石化胜利石油工程有限公司难动用项目管理中心,山东东营257000

出　　处：《精细石油化工进展》2024年第4期5-10,共6页Advances in Fine Petrochemicals

摘　　要：义284区块位于济阳坳陷沾化凹陷渤南洼陷北部陡坡带,由于该区块地质构造复杂,定向过程中钻井液井壁稳定、井眼净化及润滑防卡技术难度大。通过优选处理剂,构建聚胺强抑制润滑防塌钻井液体系,该体系在义284区块8口井进行了现场应用,配合现场钻井液维护处理工艺,结果发现:钻进过程中井壁稳定,井眼净化效果好,定向顺畅,目的层井段平均井径扩大率为6.52%;与区块前期施工井相比,平均钻井周期降低8.41%,平均完井周期降低9.13%,平均机械钻速提高9.17%,达到了优快钻井的良好效果。Yi 284 oilfield was located to the northern steep slope zone of Bonan depression on Zhanhua de⁃pression in Jiyang depression.Due to the complex geological structure of the block,the drilling fluid technolo⁃gy including borehole stability,the wellbore purification,lubrication and anti-jamming were difficult.Through the optimal treatment agent,the polyamine drilling fluid system with strong inhibition and lubrication anti-col⁃lapse ability was constructed,and the system was applied on site in 8 wells in Yi 284 block,and combined with on⁃site drilling fluid maintenance and treatment technology,the wellbore wall was stable during the drill⁃ing process,the wellbore purification effect was good,and the directional flow was smooth.The average well⁃bore enlargement rate of the target layer was 6.52%.Compared with the pre construction wells in the block,the average drilling cycle was decreased by 8.41%,the average completion cycle was decreased by 9.13%,and the average mechanical drilling speed was increased by 9.17%.At last,the good effect of fast and optimal drill⁃ing was achieved.

关 键 词：定向防塌 井眼净化 润滑防卡 聚胺强抑制 井壁稳定 钻井液 

分 类 号：TE254[石油与天然气工程—油气井工程]