论文部分内容阅读
随着气田的开发,气井压力系数不断下降、地层亏空,地层出砂、出水日益严重。气田水平井完井产层大多数都是筛管完井,因地层亏空坍塌、出砂、筛管强度低、腐蚀等原因导致筛管变形、破裂、错断。同时,由于气田岩性疏松、气井开采过程中产层易出砂的特性,使水平井后期维护变得尤为重要。加之水平井井身轨迹的特殊性,后期维护作业尤其是大修作业也将更加复杂。1水平井施工案例某水平井于2013年9月5日完成投产作业,
With the development of the gas field, the pressure coefficient of the gas well is continuously decreasing, the formation is in deficit, the sand of the formation is formed, and the effluent is becoming more and more serious. Most of the horizontal well completion wells in the gas field are screen tube completion. The deformation, rupture and fault of the screen tube are caused by the collapse of the formation in the air, sand production, low strength of the screen tube and corrosion. At the same time, due to the lithology of the gas field is loose, the characteristics of sand production in the pay zone during the production of gas wells make the maintenance of late horizontal wells become more and more important. Coupled with the particularity of horizontal well bore trajectory, post-maintenance work, especially overhaul operations will also be more complex. A horizontal well construction case A horizontal well on September 5, 2013 completed the operation,