Research Of Casing Deformation Well Dispensing And Long Rubber Tube Within The Subdivision Layer Water Injection Technology

As Chinese first oil wells output,Chinese oil industry has gone through 60 years of trials from the major oil fields have been found around the world gain a foot hold in our country,the development of the economy continue to achieve new breakthroughs injected strong power.But along with the.continued exploitation of oil deposits,most of our time in the water flooding has been increasing,at present most of the production of high water cut wells has entered the development stage,downhole casing corrosion damage is severe,c asing deformation,casing damage,rupture of the well casing increasingly.Especially in terms of injection wells,because of its water temperature,higher pressure and casing corrosion and other reasons,the deterioration trend of well conditions more severe.After the injection well casing failure not only affects the utilization of injection wells,but also seriously undermined the injection system,resulting in a block injection imperfectinterlaminar aggravate the conflict,a large number of low permeability layers are notutilized,Particularly those affected by the impact of heterogeneity between layers within layers of thick.oil injection cycle invalid seriously,seriously affecting the blocks stratifiedwater,fine water.Current injection well casing deformation,casing damage has become plagued bylate sustainable development and oilfield serious problems develop effective water recovery and improve water injection wells casing deformation effect,has become a key issue in the late development of oil fields need to be resolved.This paper analyzes the application of several major research fields cover becomes stratified water injection wells technology.Based on this research and design a set of variable sets dispensing oil wells and multi-stage injection string string,string elaborated design principles,and its structure was analyzed and validated the technology through a lot of trial.The test results meet the design requirements,to achieve the well casing deformation stratified water needs.Studied the breakdown of long plastic tube layer water injection technology,With a long plastic tube injection packer and bridge column eccentric dispensing technology and commissioning linkage method of combining to form a suitable penetration Liao he Oil field large difference in thick oil and a small compartment subdivision water injection wells and testing technology to effectively solve the thin barrier,a thin sandwich serious heterogeneity,uneven washing conditions,in order to achieve efficient development of oil wells.