Water distribution testing and adjusting device and method of water injection well

Abstract

The invention provides a water distribution testing and adjusting device and method of a water injection well. The water distribution device of the water injection well comprises wireless communication equipment, a downhole controller and an adjusting water distributor. The wireless communication equipment is used for transferring a control command to the downhole controller in a wireless mode. The downhole controller is used for controlling the adjusting water distributor according to the control command. The adjusting water distributor is used for conducting water distribution under the control of the downhole controller, and transferring real-time water distribution amount to the wireless communication equipment through the downhole controller by means of a built-in flowmeter. By the adoption of the water distribution testing and adjusting device and method of the water injection well, the technical problems that due to the fact that an existing water distribution device of a water injection well needs to be arranged in a mechanical mode, and a water distributed is screwed mechanically, the operation process technology is complex, the water distribution testing and adjusting efficiency is low, and the water distribution testing and adjusting success rate is low are solved, the technical effect that water distribution testing and adjusting of the water injection well are easy and efficient are achieved, the testing and adjusting success rate is high, and the safety is good.

Description

technical field [0001] The invention relates to the technical field of oilfield water injection development, in particular to a water distribution measuring and adjusting device and a water distribution measuring and adjusting method for water injection wells. Background technique [0002] At present, for injection and separate injection, there are mainly two technologies: eccentric separate injection technology and concentric separate injection technology. The supporting technologies of these two technologies are layered water injection string technology and water injection intelligent linkage measurement and adjustment technology. Among them, the water injection string technology consists of layered water injection packers, eccentric / concentric water distributors and water injection ball seats. The main working principle is: use layered water injection packers to block each layer, eccentric / concentric water distributors to realize the injection of geological distribution w...

AI Technical Summary

Problems solved by technology

During the process of connecting the instrument to the wellbore to measure and adjust the water nozzle, when there are wax deposits, scaling phenomena on the wellbore pipe wall, oil layer regurgitation caused by periodic water injection in the formation, or the well inclination angle is large, it is easy to cause the instrument Difficulty in lifting and lowering the string, difficulty in docking the measuring and adjusting instrument with the water distributor, instrument well jamming, cable breakage, etc.

At the same time, ground test vehicles are required for testing and adjustment, and offshore water injection wells are limited by the limited space, resulting in limitations and high costs for the testing and adjustment of water injection wells

[0005] For the above problems, no effective solutions have been proposed so far

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