CAJ | 학술논문

针对塔河油田深井侧钻井巴楚组和桑塔木组地层泥岩垮塌难题，优选矱139.7 m m实体膨胀管对复杂泥岩段进行机械封隔。根据弹塑性有限元理论，利用有限元数值模拟研究了矱139.7 m m实体膨胀管的膨胀特性，探讨了膨胀率、屈服强度、摩擦系数和膨胀锥锥角对膨胀力的影响规律。在塔河油田T K6463C H井进行了实体膨胀管的现场施工应用，将该井膨胀锥锥角设计为10°，预测膨胀力为603～607 kN ，与实际计算结果相比误差小于8％，表明该方法具有合理可行性，为深井侧钻井膨胀管设计及膨胀管施工提供了技术支持。
침대탑하유전심정측찬정파초조화상탑목조지층니암과탑난제，우선확139.7 m m실체팽창관대복잡니암단진행궤계봉격。근거탄소성유한원이론，이용유한원수치모의연구료확139.7 m m실체팽창관적팽창특성，탐토료팽창솔、굴복강도、마찰계수화팽창추추각대팽창력적영향규률。재탑하유전T K6463C H정진행료실체팽창관적현장시공응용，장해정팽창추추각설계위10°，예측팽창력위603～607 kN ，여실제계산결과상비오차소우8％，표명해방법구유합리가행성，위심정측찬정팽창관설계급팽창관시공제공료기술지지。
View of the mudstone collapse encountered in Bachu and Sangtamu formations in deep side-tracking wells of Tahe Oilfield ,the solid expandable tube with 5.5 inch OD was selected to seal the mud-stone mechanically .According to the theory of elastoplasticity ,finite element numerical simulation was a-dopted to study the expansion characteristics of the solid expandable tube ,the expansion ratio ,yield strength ,friction coefficient and the impact on the expansion force by expansion cone angle were analyzed . The expandable tube was used in Well TK6 463CH of Tahe Oilfield ,which was designed with an expansion cone angle of 10° ,expected expansion force of 603 607 kN ,with a simulation error of less than 8% .The re-sults show that the method is feasible ,providing reference for expandable tube design and operation in deep well sidetracking .