摘要
东河1-H18C井是位于塔里木东河油田东河1区块的一口开窗侧钻定向井。该井钻井工程的难点是:同一裸眼内存在压力系数相差较大的地层,极易造成粘卡;井斜角达到57°,Ф152.4 mm井眼下Ф127 mm尾管,环空间隙小,固井风险大。实钻过程中发生卡钻和固井憋高压事件。通过对钻井工程难点的细致分析,从中找出导致事件发生的原因,从而采取必要的措施,在今后的钻井生产中加以避免,可对现场技术工作起到借鉴作用。
Donghe 1-H18C well is sidetracked directional well in Donghe 1 Block of Donghe Oilfield in Tarim Basin.The difficulties of drilling the well are that some layers with big difference of pressure gradient exist in the same borehole,causing the tendency of sticking;inclination angle is 57°and 127 mm liner is run in 152.4 mm borehole,with small annular space,causing big risk in cementing.Because of the difficulties,drill pipe sticking and cementing pressure building accidents happen in drilling process.Through detailed analysis,the reason leading to the accidents was found and some essential treatment was taken to avoid them,which could play a directional role in field technical work.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2011年第1期117-119,共3页
Oil Drilling & Production Technology
关键词
开窗侧钻
定向井
卡钻
固井憋高压
处理及原因分析
side tracking
directional well
sticking
high cementing pressure
treatment
analysis
