小井眼侧钻水平井液压套管扶正器研制与应用  

DEVELOPMENT AND APPLICATION OF HYDRAULIC CASING CENTRALIZER FOR SLIM HORIZONTAL WELL SIDETRACKING

作　　者：李云峰[1] 王在明[1] 肖国华[1] 沈园园[1] 黄晓蒙[1] LI Yunfeng;WANG Zaiming;XIAO Guohua;SHENG Yuanyua;HUANG Xiaomeng(Institute of Drilling and Production Technology,PetroChina Jidong Oiffied Company,Tangshan,Hebei 063000,China)

机构地区：[1]中国石油冀东油田分公司钻采工艺研究院

出　　处：《钻采工艺》2019年第6期77-80,I0005,共5页Drilling & Production Technology

基　　金：冀东油田局级科研项目“老井利用侧钻钻完井技术研究与应用”(编号:ZJ2017C03)资助

摘　　要：针对冀东油田Φ139.7mm套管开窗小井眼侧钻水平井采用常规的弹性和刚性扶正器套管居中度不易保证,造成水泥环厚度不均、固井质量较差等问题,研制出了一种液压刚性套管扶正器。该扶正器由多级活塞、扶正爪、锁紧机构等组成,通过液压作用于多级活塞,推动锥体撑开刚性扶正爪,强制扶正套管居中。目前在冀东油田Φ139.7mm套管开窗小井眼侧钻水平井应用了5口井,现场应用表明,固井成功率为100%,侧钻水平段固井优质率98%以上,应用效果良好。该扶正器具有外径小、液压启动、刚性扶正套管的特点,为提高冀东油田小井眼侧钻水平井套管串的居中度,改善固井质量,提高开发效果、延长生产寿命提供了技术支持。Aiming at the problems of uneven thickness of cement sheath and poor cementing quality caused by conventional elastic rigid centralizer used in horizontal well sidetracking through 139.7mm casing at Jidong Oilfield,a hydraulic rigid casing centralizer is developed.The centralizer is composed of multi-stage piston,centralizer claw,locking mechanism,etc.By hydraulic pressure acting on multi-stage piston,the cone is pushed to open rigid centralizer claw,and the centralizer sleeve is forced to center.At present,it has been applied in five 139.7mm sidetracking horizontal wells at Jidong Oilfield.Field application shows that the success rate of cementing is 100%,and the cementing quality rate of sidetracked horizontal section is more than 98%.The application result is good.The centralizer has the characteristics of small diameter,hydraulic start-up and rigid centralizing.It provides technical support for improving the casing centralizing in slim horizontal well idetracking at Jidong Oilfield,improving cementing quality,improving development and prolonging production life.

关 键 词：侧钻水平井 液压扶正器 居中度 小井眼 

分 类 号：TE2[石油与天然气工程—油气井工程]