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

A layered water injection and flow test technology, which is applied in the direction of mining fluid, earthwork drilling, drilling equipment, etc., can solve the problems of low test and adjustment efficiency, long test and adjustment time, and low test pass rate, so as to improve test accuracy and reduce Labor intensity, the effect of improving the efficiency of measurement and adjustment

Inactive Publication Date: 2005-03-30
DAQING OILFIELD CO LTD
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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 c

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

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] attached figure 1 It is a schematic diagram when the present invention is applied to work. It can be seen from the figure that the involved instruments can be divided into two major parts: surface instruments and downhole instruments. Among them, the surface instrument completes the power supply control of the downhole instrument, the processing and acquisition of the uploaded signal, and the communication with the downhole instrument; the downhole instrument completes the measurement and adjustment function, which is the core of the whole system.

[0022] When testing and adjusting the flow rate of oilfield stratified water injection, first put the adjustable plug into the partial hole of the eccentric water distributor with two bridge-type through holes on the main body. Here, the string part is mainly composed of Y341-114MS packer, 665-6 eccentric water distribut...

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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...

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Application Information

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IPC IPC(8): E21B43/20E21B44/06
Inventor 王中国王清发王波张惠殊张传军
Owner DAQING OILFIELD CO LTD
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