探矿工程-岩土钻掘工程
探礦工程-巖土鑽掘工程
탐광공정-암토찬굴공정
EXPLORATION ENGINEERING (DRILLING & TUNNELING)
2013年
10期
43-45
,共3页
水平井%井眼轨道%摩阻%扭矩%靶前距
水平井%井眼軌道%摩阻%扭矩%靶前距
수평정%정안궤도%마조%뉴구%파전거
horizontal well%well trajectory%friction%torque%frontal distance to hitting target
针对大庆油田中长、长水平段水平井钻井施工和下套管过程中摩阻、扭矩大,导致钻井速度慢,而井眼浸泡时间长易导致井壁失稳而进一步减缓施工速度,从而形成恶性循环,对钻完井施工影响极大的问题,从井眼轨道的合理设计进行了模拟计算,针对不同的剖面类型、造斜率和靶前距进行优化设计,确定合理的井眼轨道,以降低定向钻进和下套管过程中的摩阻和扭矩,为中长、长水平段水平井的顺利施工提供技术支持。
針對大慶油田中長、長水平段水平井鑽井施工和下套管過程中摩阻、扭矩大,導緻鑽井速度慢,而井眼浸泡時間長易導緻井壁失穩而進一步減緩施工速度,從而形成噁性循環,對鑽完井施工影響極大的問題,從井眼軌道的閤理設計進行瞭模擬計算,針對不同的剖麵類型、造斜率和靶前距進行優化設計,確定閤理的井眼軌道,以降低定嚮鑽進和下套管過程中的摩阻和扭矩,為中長、長水平段水平井的順利施工提供技術支持。
침대대경유전중장、장수평단수평정찬정시공화하투관과정중마조、뉴구대,도치찬정속도만,이정안침포시간장역도치정벽실은이진일보감완시공속도,종이형성악성순배,대찬완정시공영향겁대적문제,종정안궤도적합리설계진행료모의계산,침대불동적부면류형、조사솔화파전거진행우화설계,학정합리적정안궤도,이강저정향찬진화하투관과정중적마조화뉴구,위중장、장수평단수평정적순리시공제공기술지지。
Low drilling efficiency was caused by large friction and high torque in drilling and casing running process in mid-dle-long and long horizontal wells in Daquing oilfield and the borehole wall collapsing led by long time contact with drilling fluid further slowed down the construction speed.The stimulation was made to rationally design the well trajectory according to different profile types, build-up rates and frontal distances to hitting target to reduce the friction and torque in drilling and casing running process and provide technical support for the smooth construction of middle-long and long horizontal wells.