摘要
A油田A-1井固井后发生管外井喷,在井口周围形成直径10余米的水洼,溢出少量水、油、气。为消除事故井对周边环境造成的影响,设计A-1救援井在不同井深分别对嫩二段、嫩三段、嫩四段砂岩层进行挤水泥封堵,从深层到浅层对该井进行全面治理。针对救援井眼与事故井套管连通的技术难题,利用无源磁导向技术精准定位,控制救援井在嫩三段底与事故井套管碰撞,实现两井交会对接。救援井通过优化井眼轨道,应用磁导向钻井技术在616.13m成功与事故井套管相碰,开窗虽未成功,但后续定向射孔注水泥封堵地层施工正常,有效解决了事故井环境污染问题,为今后井喷事故综合治理提供经验借鉴。
After Well A-1 in A Oilfield was cemented,the blowout accident occurred outside the casing,forming a small puddle with a diameter of more than 10 meters around the wellhead,spilling a small amount of water,oil and gas.In order to eliminate the impact of the accident well on the surrounding environment,an A-1 rescue well was designed to squeeze the cement and plug the sandstone layers of N2,N3 and N4 intervals at different depths,and completely control the well from deep to shallow depth.In order to solve the technical problem of connecting the rescue wellbore with the accident well casings,the passive magnetic steering technology was used to accurately locate the position and control the collision between the rescue well and the accident well casings at the bottom of N3,so as to realize the intersection and the connection of the two wells.By optimizing the wellbore trajectory and applying the magnetic steering drilling technology,the well successfully collided with the accident well casings at 616.13 m.Although the window opening operation was not successful,the subsequent operation of directional perforation and cement plugging the formation was normal,which effectively solved the environmental pollution problem of the accident well,providing experience for comprehensively treatment of the blowout accident well in the future.
作者
李童
Li Tong(Production Technology Institute of Daqing Oilfield Limited Company)
出处
《采油工程》
2023年第1期34-38,83,共6页
Oil Production Engineering
关键词
井喷
救援井
磁导向
连通
封堵
blowout
rescue well
magnetic guidance
connectivity
plugging
