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Oil well potential detection method

A detection method and oil well technology, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc., can solve the problems of insufficient judgment basis and poor judgment result accuracy, and achieve high success rate of production resumption and strong operability Effect

Active Publication Date: 2022-03-29
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the judgment basis of the detection method in the prior art is not comprehensive enough, and the accuracy of the judgment result is relatively poor.

Method used

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Comparison scheme
Effect test

Embodiment 1

[0099] If the water content of the produced fluid of an oil well that has been put into production is measured to be 82%, if it is greater than 70%, then the oil well is the target oil well for potential detection. According to the accumulative oil production data of the adjacent well, the accumulative oil production of the target oil well is 6221 tons. According to the historical data of the oil well, the relative position of the oil well is 32m, there are logging oil layers, and the dynamic reserves of the oil well The output is 120,000 tons. After further measurement of the output, the hydrogen sulfide content is 23ppm, there is crude oil in the output, no natural gas, and the energy of the water body is violent flooding.

[0100] After calculation, its comprehensive score is 6.44 points, which is 6 points higher than the preset standard score, which proves that it has the potential for stable production. After the follow-up drainage operation, the oil well resumed producti...

Embodiment 2

[0102] If the water content of the produced fluid of an oil well that has been put into production is measured to be 94%, if it is greater than 70%, then the oil well is the target oil well for potential detection. According to the accumulated oil production data of the adjacent well, the cumulative oil production of the target oil well is 3251 tons. According to the historical data of the oil well, the relative position of the oil well is 62m, there are logging oil layers, and the dynamic reserves of the oil well It is 80,000 tons. After further measurement of the output, the hydrogen sulfide content is 16ppm, there is crude oil in the output, no natural gas, and the energy of the water body is a step-up type.

[0103] After calculation, its comprehensive score is 5.62 points, which is 6 points lower than the preset standard score, which proves that it does not have the potential for stable production. Therefore, it is not necessary to carry out follow-up operations to reduce ...

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Abstract

The invention provides a method for detecting the potential of an oil well. The method of the present invention conducts a comprehensive score on the target oil well according to the detection result of the output, historical data and the production status of the adjacent well, and compares the score with the standard score to judge whether the target oil well has the potential to continue stable production. The method of the present invention conducts quantitative analysis and evaluation on various indicators affecting the potential of oil wells, and can accurately judge whether the target oil well has potential according to the obtained final evaluation result, and has strong operability in actual production, and has potential after passing the judgment The success rate of oil well resumption is high.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a method for detecting the potential of an oil well. Background technique [0002] The normal production of oil wells or high water content in the crude oil produced will seriously affect the stable production of oil wells. However, when the above problems occur in the oil well, it does not necessarily mean that there is no crude oil in the reservoir at the bottom of the oil well. This problem may be caused by the deviation in the understanding of the oil-water relationship before drilling or the relative position between the bottom of the well and the oil-water interface during the production process. Therefore, it is necessary to analyze the potential of the oil wells that have this problem to detect whether they have the potential to continue stable production. [0003] In the prior art, the detection of oil well potential is mainly through draining oil wells with hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
CPCE21B47/00E21B49/00
Inventor 王翠丽李红波杨文明顾俊颖钟文雯补璐璐
Owner PETROCHINA CO LTD