Research And Application Of Pressure Operation Technology In Xinggu Qianshan Well

It has obvious economic and social benefits,which has obvious economic and social benefits,and has obvious economic and social benefits,and it has obvious economic and social benefits,and it has obvious economic and social benefits.Gas field exploration and development provides a new way of thinking.It has been highly recognized and widely applied in various oilfields,and has broad market prospects.At present,there are some outstanding problems in the construction of the well belt pressure operation in Xinggu Qianshan.One is the existing diameter of the well head blowout prevention device of the existing pressure operation(186mm),when the large diameter tubing hanger(272mm)and the downhole tools are set up and set up.Two because of the relatively large gas content in the oil wells in ancient Qianshan,and complex pipe columns,such as complex pipe columns and multistage gas lift valves,the plugging of the original pipe column in the belt and pressure operation and the sealing technology of the special completion pipe column(multistage gas lift valve tube and two stage pump pillar)is not perfect.It restricts the implementation of the pressure operation and the construction prescription of the oil well in Qianshan.L.In order to improve the overall construction pressure grade of the pressure working device,it is proved by theoretical study that the replacement of the annular(rubber)seal can be made by adding the oil pipe centralizer,the tubing hoop detector,the sliding seal sluice blowout preventer,the pressure balance short section and the pressure balance valve to change the seal of the original annular(rubber).The way of sealing,so that the pressure level of the whole set can reach 35 MPa and 70 MPa.