Method and system for improving oil pumping well indicator diagram oil gauging precision

A technology for pumping wells and dynamometer diagrams, which is used in surveying, earthmoving, wellbore/well components, etc., can solve problems such as low calculation accuracy, and achieve the effect of improving accuracy and improving oil well production management level.

Active Publication Date: 2017-10-24
CHINA UNIV OF PETROLEUM (BEIJING) +1
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Problems solved by technology

This invention also adopts the effective stroke method stated above, which has the problem of relatively low calculation accuracy

Method used

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  • Method and system for improving oil pumping well indicator diagram oil gauging precision
  • Method and system for improving oil pumping well indicator diagram oil gauging precision
  • Method and system for improving oil pumping well indicator diagram oil gauging precision

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Embodiment Construction

[0063] Such as figure 1 As shown, a method of improving the oil measurement accuracy of the dynamometer chart of a pumping well in the present invention includes the following steps, step S101: preprocessing the ground dynamometer chart, screening and deleting the wrong ground dynamometer chart that affects the calculation accuracy of liquid production . In the field application of this embodiment, a certain amount of ground work map data is collected by setting different collection frequencies. However, due to various abnormal factors such as sensor failure and communication failure, not all collected ground work map data can be used for production. For liquid volume calculation, in order to improve the accuracy of liquid production calculation by the power diagram method, it is necessary to pre-screen the ground dynamometer diagram to judge and screen out the surface power diagram that meets the requirements for liquid production calculation. The method is to use the least ...

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Abstract

The invention relates to the technical field of pumping units, in particular to a method for improving oil pumping well indicator diagram oil gauging precision. The method comprises the following steps of 101, ground indicator diagram pretreatment, 102, ground indicator diagram transformation, 103, working condition diagnosis, 104, liquid production capacity preliminary calculation, and 105, liquid production capacity final calculation. The invention further comprises a system for improving the oil pumping well indicator diagram oil gauging precision, the system comprises an indicator diagram treatment module, a working condition diagnosis and classification module, a liquid production capacity calculation module and a liquid production capacity correction module which are connected in sequence. By means of the method and the system, analysis diagnosis optimization is conducted on indicator diagram data of an oil pumping well which are collected and transmitted to a real-time database, the precision of liquid production capacity measurement of the oil pumping well can be improved greatly, production dynamic change of the oil well is commanded accurately, and production management level of the oil well is improved effectively.

Description

technical field [0001] The invention relates to the technical field of pumping units, in particular to a method and a system for improving the oil measurement accuracy of a dynamometer diagram of a pumping unit well. Background technique [0002] Fluid production measurement of pumping wells is an important task in oilfield production management, and it is an important basis for mastering oil well production dynamics, analyzing changes in oil reservoirs, and formulating oilfield development plans scientifically. Measuring oil with dynamometer diagram is a technical method to measure the fluid production of pumping wells. The following introduces several methods for calculating fluid production using dynamometer diagrams of pumping wells. [0003] 1. Area method [0004] The area method is a method of converting and solving the surface dynamometer diagram to obtain the pump dynamism diagram, and calculating the liquid production rate by calculating the area of ​​the pump dyn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/008
CPCE21B47/00
Inventor 檀朝东孙聪杨若谷
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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