An oil well production prediction method based on system well testing

By changing the working conditions through two system well tests, calculating the daily oil production decline rate and elastic decline coefficient, the problem of inaccurate oil well production prediction was solved, and accurate prediction of dynamic changes in oil well production was achieved, thus optimizing the oil well production strategy.

CN117313907BActive Publication Date: 2026-06-09PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2022-06-21
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies cannot accurately predict the decline characteristics of oil well production over time under different operating conditions, especially when a large amount of historical data and complex processes are required, leading to inaccurate oil well production predictions.

Method used

By conducting two system well tests and changing various operating conditions, the daily oil production decline rate, elastic decline coefficient, and decline rate were calculated. Based on the fitting relationship, the production changes of the oil well under different operating conditions were predicted.

Benefits of technology

It enables accurate prediction of the dynamic changes in oil well production at any future time, providing a reference for the optimal oil well operating system and improving the stability and economic benefits of oil well production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a kind of oil well production prediction method based on system well testing, and belongs to the technical field of oil and gas field development.The application calculates daily oil production decline amplitude and elastic decline coefficient under the nth work system according to the production and pressure change of two system well tests under the nth work system;calculates daily oil production decline amplitude from the second system well test to the starting time of production prediction under the nth work system;calculates the initial value of daily oil production at the starting time of production prediction under the nth work system;obtains daily oil production decline rate according to the fitting of daily oil production of two system well tests under the nth work system;predicts the daily oil production of oil well at any time under different work systems respectively combining the initial value of daily oil production and daily oil production decline rate.The application can predict the dynamic change characteristics of production of oil well under different work systems at any time in the future, and provides reference basis for work system optimization of oil well.
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