Inclined water injection well testing and regulation tubular column with water distributor and testing and regulation method

Abstract

The invention provides an inclined water injection well testing and regulation tubular column with water distributors and a testing and regulation method. The tubular column comprises a sleeve, a water injection testing and regulation instrument, a testing and regulation cable, multiple water injection packers and multiple water injection distributors, wherein the sleeve sleeves the water injection tubular column; an annular space is formed between the sleeve and the water injection tubular column; the water injection testing and regulation instrument is connected in parallel with each of crawlers along the axial direction of the water injection tubular column to form a testing and regulation instrument tubular column string; the water injection testing and regulation instrument is arranged along the axial direction of the water injection tubular column, and is put into the tubular column through the crawlers; the crawlers are connected end to end; the water injection testing and regulation instrument is located on one end, close to the bottom of an inclined water injection well, of the testing and regulation instrument tubular column string; the testing and regulation cable is arranged in an inner cavity of the water injection tubular column; the crawlers and the water injection testing and regulation instrument are respectively connected with the testing and regulation cable; the multiple water injection packers are arranged in the annular space; a first water injection space is formed between every two adjacent water injection packers; a second water injection space is formed between the water injection packer close to the tail end of the sleeve and the tail end of the sleeve; the multiple water injection distributors are arranged on the water injection tubular column; the water injection distributors are respectively arranged in the second water injection space and the first water injection spaces.

Description

technical field [0001] The invention relates to oilfield water injection technology, in particular to a measuring and adjusting pipe string and a measuring and adjusting method for a water distributor of an inclined water injection well. Background technique [0002] At present, the water injection technologies widely used in oil fields mainly include eccentric split injection technology and concentric split injection technology. The core technologies of these two separate injection technologies are mainly: layered water injection string technology and water injection intelligent measurement and adjustment linkage technology. [0003] Among them, the main equipment of the layered water injection string technology includes layered water injection packers, eccentric / concentric water distributors and water injection ball seats, etc. The concentric water distributor realizes the injection of the geological injection water volume of each layer, and uses the intelligent linkage m...

AI Technical Summary

Problems solved by technology

Under the actual working conditions of the downhole intelligent measuring and adjusting instrument string, during the process of pulling out, running into the wellbore and adjusting the water nozzle, when there are wax deposition, scaling on the wellbore pipe wall, and oil layer return caused by periodic water injection in the formation When the spit site or the well inclination angle is large, due to the relatively small bearing capacity of the cable, it is difficult to lift out or run in the instrument string, and it is easy to cause the instrument well to get stuck and the cable to break.

Therefore, the failure of measurement and adjustment caused by dirty wellbore, wax deposition, scaling and well deviation is the main technical bottleneck of measurement and adjustment failure at present.

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