Oil well variable-displacement production regulation method based on electric power diagram

An electrical power map and variable displacement technology, which is applied to earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problems that oil wells cannot be properly adjusted in time, and the reliability of monitoring instruments needs to be improved, and can achieve analysis and interpretation. Rich methods, not easy to be stolen or destroyed, and high stability

Active Publication Date: 2018-04-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The switch well plan of the traditional intermittent production strategy is generally fixed, and appropriate adjustments cannot be made in time for oil wells with fluid volume fluctuations; the method of adjusting the intermittent production system by means of flow monitoring and work diagram interpretation, the monitoring adopted The reliability of the instrument needs to be improved

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  • Oil well variable-displacement production regulation method based on electric power diagram
  • Oil well variable-displacement production regulation method based on electric power diagram
  • Oil well variable-displacement production regulation method based on electric power diagram

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Embodiment Construction

[0060] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0061] Such as figure 1 as shown, figure 1 It is a flow chart of the control method for oil well variable displacement production based on the electric power diagram of the present invention.

[0062] In step 101, the electric power data W consumed by the oil pumping system on the upstroke of the stroke are obtained from the electric power collection and interpretation system up , referred to as upward work.

[0063] In step 102, use the Mallat tower decomposition algorithm to dissociate the frequency of the electric power data of one stroke, extract the part close to the natural vibration frequency of the sucker rod, obtain the vibration starting point of this part, and calculate the plunger operation from the position of this point. The effective ...

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Abstract

The invention provides an oil well variable-displacement production regulation method based on an electric power diagram. The oil well variable-displacement production regulation method based on the electric power diagram comprises the steps that 1 electric power data, consumed at the up stroke of the stroke, of an oil pumping system are obtained and serve as up-stroke power; 2 according to the electric power data of the stroke, the effective operation stroke of a plunger is calculated; 3 according to the up-stroke power, the depth of the current working fluid level of an oil well is calculated; 4 according to the effective operation stroke of the plunger, the pump efficiency of the oil pumping system is calculated; and 5 on the basis of the change trends of the depth of the current working fluid level of the oil well and the pump efficiency of the oil pumping system, adjustment of oil well operation parameters is conducted. According to the oil well variable-displacement production regulation method based on the electric power diagram, the flexibility, the timeliness and accuracy of adjustment of the oil well production parameters can be improved, the operation parameters of a hoisting system are adjusted in a mode of adapting to the reservoir liquid-supply capability, and the efficiency of the hoisting system is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a method for regulating and controlling oil well variable displacement production based on electric power diagrams. Background technique [0002] During the development of low-permeability oilfields, due to insufficient liquid supply capacity of oil wells, the phenomenon of inefficient operation of the lifting system is very common; in some oilfield blocks, due to uneven water injection control, the production of oil wells also fluctuates from time to time, and even intermittent outflows occur. condition of the fluid. [0003] At present, the lifting system can only operate at a constant speed according to the set parameters. When encountering insufficient liquid supply, intermittent liquid discharge and output fluctuations, the lifting efficiency will fluctuate greatly. In order to reduce the production cost and save energy, it has been generally accepted by oilf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
CPCE21B43/121
Inventor 王增林贾庆升姜东杜玮暄肖姝张雷肖萍周娜高综启张方圆孙衍东罗燕张俊清朱泽军
Owner CHINA PETROLEUM & CHEM CORP
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