水平井岩屑床清除工具优化设计与应用  

Optimal Design and Application of Removal Tools for Horizontal Well Cuttings Bed

作　　者：纪国栋 陈勋[2] 佟德水[2] 刘力[1] 郭卫红 余万顺 JI Guo-dong;CHEN Xun;TONG De-shui;LIU Li;GUO Wei-hong;YU Wan-shun(CNPC Engineering Technology R&D Company Limited;Drilling and Production Technology Research Institute,CNPC Liaohe Oilfield Company;CNPC Petroleum Exploration and Production Research Institute)

机构地区：[1]中国石油集团工程技术研究院有限公司 [2]辽河油田公司钻采工艺研究院 [3]中国石油勘探开发研究院

出　　处：《化工机械》2021年第6期943-948,共6页Chemical Engineering & Machinery

基　　金：国家重点研发计划课题(2019YFA0708302);中国石油天然气集团有限公司前瞻性基础性战略性技术攻关项目课题(2021DJ-4204)。

摘　　要：岩屑床清除工具对减少水平井岩屑床堆积、降低摩阻扭矩具有重要作用。对现场常用的直棱形、螺旋形和V形3种叶片结构的岩屑床清除工具进行了优选,通过实验研究了V形叶片长度、叶片外径和叶片数量对携屑效果的影响规律,设计加工了φ165.1 mm井眼用V形岩屑床清除工具,现场测试2井次,应用后钻柱摩阻分别下降28.6%和40.0%,起/下钻通畅、无阻卡,保障了后期电测、下套管作业的安全。Cuttings bed removal tools play an important role in improving cuttings bed accumulation and reducing friction torque in horizontal wells.The commonly-used cuttings bed removal tools with straight prismatic,spiral and V-shaped blade structures were optimized and the effect law of V-shaped blade length,outer diameter,number and other parameters on cuttings-carrying effect were further studied through experiments,including having the V-shaped blade for φ165.1 mm well designed and processed.The cuttings bed removal tool has been tested twice in the field.After the application,the friction of drill string has decreased by 28.6% and 40.0%,respectively.The trip-out/drill down becomes unobstructed to ensure the quality of electric logging and the safe running of casing in the later stage.

关 键 词：岩屑床 岩屑床清除工具 井眼清洁 致密油水平井 V形叶片 

分 类 号：TE52[石油与天然气工程—油气田开发工程]