The Research Of Low Pressure Setting Water Injection Tools

At present the containing water of daqing oil field rises, in order to keep oil field withcontinuing high output, must improve the exploitation of high-low, medium-low poorcontaining water oil reservoir, and annually the increasing two-third of recoverable reservesexists in poor oil reservoir with low permeability, therefore the effective exploitation of thinpoor oil reservoir is the key to realize the output relay and keep high stable output, oil fielddevelopment gives higher requirement to the water injection of thin poor oil reservoir, since2003daqing oil field has applied highly effective subdivision water injection column, and hasrealized that tool setting relies on the water injection pressure, and has made the shortestdistance of separated zone water injection decrease by0.8meter, which has provided effectivetechnology means for subdivision adjustment of oil field.This article analyses and researchs low pressure setting water injection tools amongsubdivision tools, mainly do following jobs:In order to decrease operating setting and throwing and fishing workload of waterinjection wells, develop and apply two kinds of lowpressure setting packer K344-114-X-BY-90/15and Y341-114-X-JH2-90/15. Throughapplication of low pressure setting column, save working procedure applying pump truck toset packer after operation, and reduce the workload of throwing and fishing stopper,effectively decrease workload of throwing and fishing after operation, improve the efficiencyof measurement.Developed upper guide eccentric water distributor mainly includesφ114millimetre andφ95millimetre two kinds of upper guide multifunctional eccentric water distributor,distributed throwing and fishing measuring tools, the first is to design side-openingside-direction bridge type structure, which not only realizes examining seals and measurementwith normal ways, but also can have single layer pressure and water measurement, the stylefor water to flow into is center lantern ring groove.the second is to design upper guidestyle,the third is to cancel independent measurement braces and centering horn mouth, thestructure is more compact.This article writes low pressure water injection column making up with low pressuresetting packer and upper guide multifunctional eccentric water distributor. Analyses structuretheory of tools and experiment effect respectively.