考虑钻头与地层相互作用的侧钻水平井轨迹预测方法  

TRAJECTORY PREDICTION OF REENTRY HORIZONTAL WELL BASED ON BIT-ROCK INTERACTION

作　　者：刘永辉[1] 付建红[1] 刘明国[2] 吴华强[2] 占选鹏[3] 

机构地区：[1]西南石油大学"油气藏地质及开发工程"国家重点实验室 [2]中原石油勘探局钻井工艺研究院 [3]大港油田井下作业公司国际工程部

出　　处：《钻采工艺》2006年第1期9-11,121,共3页Drilling & Production Technology

摘　　要：在侧钻水平井钻井过程中,由于造斜率高,从造斜点到半点之间的井段长度有限,给侧钻井的井眼轨迹控制带来较大的挑战。考虑钻头与地层之间相互作用、钻头切削各向异性以及钻头侧向力等因素的影响,建立了侧钻水平井造斜井段采用弯外壳螺杆钻具滑动钻进时的轨迹预测模型,并用现场实钻数据对理论模型进行了验证,为侧钻水平井井眼轨迹预测及井眼轨迹控制提供了一种行之有效的方法。In the drilling of reentry horizontal well,there is a great challenge to well trajectory control because of high build-up rate and limited length of build-up section. Considering Bit-Rock Interaction, anisotropy of bit-cutting and forces applied on the bit etc, a reentry horizontal well trajectory prediction model suited for sliding using BHA with bent housing was presented. The model is validated by drilling data from rig site. An effective way for trajectory prediction of reentry horizontal well and controlling of well trajectory was provided.

关 键 词：侧钻水平井 轨迹预测 钻柱力学 地层 钻头 

分 类 号：TE243.2[石油与天然气工程—油气井工程]