Pressure Operation Technology Used In Snubbing Service Of Oil And Gas Well

During the snubbing project, pipe diameter becomes smaller, well has litter tubing internal pressure control and disassembly when changing the wellhead oil casing annulus pressure control problem, with the pressure operation in the oilfield development in large-scale promotion and application.Carry out oil and gas well pressure operation tubing pressure control technology research, blocking any water column and annular space of an oil sleeve pipe, can solve the pipe size becomes smaller, well within a litter, disassembly when changing the wellhead tubing internal pressure control and the tubing casing annulus pressure control problem, expanding pressure scope of operation, improve operation efficiency, to break the constraints with pressure homework technology development bottleneck problem.This paper on the chemical and mechanical tubing pressure control technology and supporting tools are studied, the formation of the efficient tubing plugging, under the special circumstances of the tubing pressure control technology, completed the steel wire operation equipment development and downhole tools supporting test, study the composition of chemical tubing bridge plug, adapt to different temperature of the liquid bridge plug series formula are obtained, builds the framework for the establishment of the liquid bridge plug field application template.