Method for measuring and adjusting flux of separated-zone water infection oil field

Abstract

The invention is a method of testing and regulating oil-field layered injected water flow, and its characteristic: putting down flow testing and regulating meter to butt with regulable flow stopper in the deviation hole of an eccentric water distributor, and then measure the actual flow by an electromagnetic flowmeter in the flow testing and regulating meter and then sending the measured result through the cable to a ground control system, comparing the measured signal with the water injection set signal for the layer by the ground control system: if they do not tally with each other, it sends a control instrument to regulate water injection to the flow testing and regulating meter to drive a regulating rod on the flow stopper for regulating the size of water outlet by the butt joint, and then achieving the purpose of regulating water injection. The invention has the characters of high testing precision and short time for testing and regulating.

Description

Technical field: [0001] The invention relates to a method used in the field of oil recovery in an oil field, in particular to a method for testing and adjusting formation water injection during the oil recovery process. Background technique: [0002] At present, the method commonly used in oil fields for layered water injection is: use the storage turbine flowmeter as the conventional layered flow rate to test the downhole flowmeter, then read the flow data through the ground playback, and decide whether to adjust the water injection according to the flow result; decide When adjusting the water injection volume, it is first necessary to take out the downhole plug and replace it with a water nozzle that may meet the requirements, then lower the plug into the eccentric water distribution injection string, re-measure the water injection volume, and if it is consistent, no longer adjust the water injection If it does not match, you need to readjust the nozzle, and so on, until i...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of low test qualification rate, long test and adjustment time and low test and adjustment efficiency in the existing layered water injection debugging method adopted by the oil field water injection well, the present invention provides a method that can test the water injection volume at the same time That is, the layered water injection debugging method for water volume adjustment. This measurement and adjustment linkage layered flow test method has the characteristics of high measurement accuracy and short measurement and adjustment time.

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