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A Method of Calculating Effective Stroke Based on Projection Method

A projection method and stroke technology, applied in calculation, data processing applications, instruments, etc., can solve the problems of difficult continuous and accurate measurement of single well production of oil wells, and achieve the goal of simplifying the surface measurement process, reducing development investment and operating costs, and facilitating management Effect

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method provides a method for accurately determining the effective stroke of the plunger suitable for oil wells under various complex working conditions without increasing hardware investment, and solves the problem that the single well production of oil wells is difficult to measure continuously and accurately

Method used

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  • A Method of Calculating Effective Stroke Based on Projection Method
  • A Method of Calculating Effective Stroke Based on Projection Method
  • A Method of Calculating Effective Stroke Based on Projection Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Shengli Oilfield Xinchun Oil Production Plant Oil Well CFP 11 , the viscosity of crude oil is 3526mPa.s, the diameter of the oil well pump is 58mm, the stroke is 4.22m, and the stroke frequency is 2.8 times / min. 9.67m 3 / d. At 15:54 on September 29, 2018, see the actual ground dynamometer diagram figure 2 , the dynamometer data are shown in Table 1. Utilize the method of the present invention to calculate effective stroke, concrete steps are as follows:

[0118] Table 1 Well CFP 11 Dynamometer data point set SGTP

[0119]

[0120]

[0121] (1) According to oil well CFP 11 The dynamometer graph data point set SGTP determines the effective data point set EPP.

[0122] The method for determining the effective data point set EPP is as follows:

[0123] EPP={(point)=f(point0)=point0.y>=y min ∩point0.ymin +(y max -y min ) / 3}, point0∈SGTP, SGTP={(index,x i ,y i ,)|index=i, i=0,1...,199}

[0124] Among them, EPP—effective data point set;

[0125] point—val...

Embodiment 2

[0236] Shengli Oilfield Xinchun Oil Production Plant oil well CFP12, crude oil viscosity 2532mPa.s, oil pump diameter 58mm, stroke 4.23m, stroke frequency 2.8 times / min, the maximum load is 30.95kN, the minimum load is 6.13kN, the water content of the oil well is 49.7%, liquid production 14.85m 3 / d. At 08:02 on September 29, 2018, see the actual ground dynamometer diagram Figure 4 , see table 4 for the dynamometer data. Utilize the method of the present invention to calculate effective stroke, concrete steps are as follows:

[0237] Table 4 Data point set SGTP of oil well CFP12 dynamometer diagram

[0238]

[0239]

[0240] (1) According to oil well CFP 12 The dynamometer graph data point set SGTP determines the effective data point set EPP. The method for determining the effective data point set EPP is as follows:

[0241] EPP={(point)=f(point0)=point0.y>=y min ∩point0.ymin +(y max -y min ) / 3}point0∈SGTP, SGTP={(index,x i ,y i ,)|index=i, i=0,1...,199}

[...

Embodiment 3

[0353] Shengli Oilfield Xinchun Oil Production Plant Oil Well CFP 13 , the viscosity of crude oil is 1256mPa.s, the diameter of the oil well pump is 58mm, the stroke is 4.16m, and the stroke frequency is 2.8 times / min. 25.10m3 / d. At 23:25 on September 28, 2018, see the actual ground dynamometer diagram Figure 6 , see Table 7 for the dynamometer data. Utilize the method of the present invention to calculate effective stroke, concrete steps are as follows:

[0354] Table 7 Well CFP 13 Dynamometer data point set SGTP

[0355]

[0356]

[0357] (1) According to oil well CFP 13 The dynamometer graph data point set SGTP determines the effective data point set EPP. The method for determining the effective data point set EPP is as follows:

[0358] EPP={(point)=f(point0)=point0.y>=y min ∩point0.ymin +(y max -y min ) / 3}

[0359] point0∈SGTP, SGTP={(index,x i ,y i ,)|index=i, i=0,1...,199}

[0360] Among them, EPP—effective data point set;

[0361] point—valid dat...

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Abstract

The invention relates to the technical field of oil measurement with a dynamometer diagram of an oil well, in particular to a method for calculating an effective stroke based on a projection method. The method specifically includes the following steps: according to the data point set of the oil well indicator map, determine the effective data point set EPP; determine the load interval ZHREG; calculate the interval set ZHREG_COL; determine the interval projection density set TYDC; calculate the effective projection interval set TYDC_INV; Set TY_POINT; determine the load average set TY_POINT_PJZH; calculate the effective stroke mywy. The invention not only has simple method, wide application range, and is convenient for management, but also improves the accuracy of production calculation of oil well work diagram, and reduces oil field development investment and operation cost.

Description

technical field [0001] The invention relates to the technical field of oil measurement with an oil well indicator diagram, in particular to a method for calculating an effective stroke based on a projection method. Background technique [0002] The change law of oil well production is an important basis for the evaluation of oil well production status, the analysis of reservoir situation changes, and the formulation of oilfield development plans. Real-time monitoring of oil well production plays an important role in oilfield development. The traditional method of measuring the fluid volume of pumping wells is to transport the output fluid of each oil well to the metering station for centralized measurement. The liquid volume cannot be well adapted to the requirements of digitalization, informatization and automation of oilfields. [0003] With the advancement of oilfield digital construction, the requirements for automatic collection and management of oil well production pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0639G06Q50/02
Inventor 杜伟张玉真孙辉刘鑫巴永军王守军张晓兵刘志兵焦晓芳周娜
Owner CHINA PETROLEUM & CHEM CORP
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