张28井大斜度三靶定向钻井技术  

Highly -deviated Three- target Directional Well Drilling Technology in Well Zhang 28

作　　者：时江涛[1] 张桂强[1] 李光胜[1] 吕成元[1] 向东[1] 

机构地区：[1]河南石油勘探局,河南南阳473132

出　　处：《河南石油》2000年第4期29-31,46,共4页Henan Petroleum

摘　　要：张28井是河南油田在张店地区首次部署的大斜度定向井，斜深3034m．垂深2491m，水平位移926m，最大井斜角74．9°，对钻井中靶精度要求高，钻井施工难度大．介绍了该井的地质、工程设计以及钻井过程中的井眼轨迹控制、井眼清洁和井下安全技术措施等内容，为该地区同类型井的钻井施工提供借鉴．Well Zhang 28, the first highly-deviated well in Zhangdian area in Henan oilfield, is 3034m deep with a closure of 926m. Deviation angle of the well intervals in each target is 74.9°. Requirements for target-hitting accuracy are high and drilling operation is very complex. This paper introduces its geologic and enginccring designs and the tcchnological measures for well trajectory control,wellbore cleaning and downhole safety. They can be used for reference when drilling similar wells in this area.

关 键 词：定向钻井 大角度斜井 井眼轨迹控制 钻井技术 

分 类 号：TE243[石油与天然气工程—油气井工程] TE22