Automatic adjustment method for injection allocation quantity of oil field water injection well

An oilfield water injection and automatic adjustment technology, which is applied to earthwork drilling, wellbore/well components, flow control using electrical devices, etc., can solve problems such as unsatisfactory adjustment methods

Inactive Publication Date: 2004-09-01
贵州航天凯山石油仪器有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing method for adjusting the injection volume of the oilfield water injection well is still not ideal.

Method used

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  • Automatic adjustment method for injection allocation quantity of oil field water injection well
  • Automatic adjustment method for injection allocation quantity of oil field water injection well
  • Automatic adjustment method for injection allocation quantity of oil field water injection well

Examples

Experimental program
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Embodiment Construction

[0019] Embodiment of the present invention: in this embodiment, the flowmeter (6) adopts the CLJC type storage type ultrasonic flowmeter sold on the market in the prior art. When testing the flow rate, the flowmeter is first placed under the water distributor to be tested. , to test the total flow in the oil pipe, and then lift the flowmeter above the water distributor to be tested to test the total flow in the oil pipe, and the flowmeter automatically subtracts the two measurement results to obtain the adjustable valve faucet through the plug The water injection flow rate; Motor (5) adopts the model sold on the market to be the servomotor of EC22 type, on the motor of this kind of model, the integrated circuit module of motor drive circuit (8) is carried, and its control signal is TTL level; Single-chip microcomputer (7) adopts the single-chip microcomputer that the model sold on the market is AT89C2051; Also have the power supply module that model is MAX667 in the control cir...

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Abstract

The invention is a method to automatically regulate injection quantity of water injection well in oil field, it installs in advance a regulable valve water injector which can regulate the opening size of the valve and installs a driving shaft on the stopper, which can drive the valve core of the water injector to move, it controls the driving circuit of the electric machine by the MCU signals and drives the electric machine to rotate, the electric machine drives the driving shaft by driving mechanism to rotate so as to regulate the opening size of the water injector, and the flux signal of the water injector is detected by flowmeter and input to MCU control signal input end, which composes a closed-loop control system, achieving the purpose of automatically regulating layered injection quantity. It can regulate the injection quantity of each layer without fishing the stopper and has advantages of convenient use, low operation cost, largely reducing labor strength, enhancing worked efficiency and saving testing cost.

Description

Technical field: [0001] The invention relates to an automatic adjustment method for injection volume of oil field water injection wells, and belongs to the technical field of automatic adjustment and control of injection volume of oil field water injection wells. Background technique: [0002] In the middle and late stages of oil production in oilfields, water flooding technology is widely used. Because a water well needs to inject water into multiple oil layers at the same time, in order to achieve the best effect, it is necessary to carry out quantitative water injection to different oil layers. At present, in the existing technology, the oil field mainly adopts the method of eccentric water injection. In this method, high-pressure water is injected from above. Inject the oil layer, and the other part continues to inject other oil layers after passing through the rest of the water distributor and the plug. Since the apertures of the faucets on the plugs in the prior art ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20G05D7/06
Inventor 张鉴明徐仲英庞云伟林涛谢泰平杨洪亮曾鸿逊
Owner 贵州航天凯山石油仪器有限公司
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