A method for adjusting the shut-in time using plunger downhole data

CN115807660BActive Publication Date: 2026-02-27XIAN ANCN INTELLIGENT INSTR +1
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Patent Information

Application Number
CN202211622865.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-16
Publication Date
2026-02-27
Estimated Expiration
2042-12-16

AI Technical Summary

Technical Problem

The existing plunger-type gas lift drainage and gas production process cannot monitor wellbore pressure and dynamic fluid level changes in real time, resulting in blind adjustments to the plunger operation system, which affects gas well production and production stability.

Method used

By acquiring real-time pressure and temperature data of the downhole plunger, relative time-temperature curves and relative time-pressure curves are plotted, feature points are identified and segmented for analysis, and intelligent parameter adjustment algorithms are used to calculate well opening and closing times to optimize the plunger operation regime.

Benefits of technology

It enables real-time monitoring of wellbore pressure and fluid level changes, optimizes plunger gas lift fluid discharge parameters, minimizes well shut-in time, and improves gas and fluid production in gas wells.

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Abstract

The application provides a switch well time adjustment method using plunger downhole data, relates to the technical field of gas well plunger gas lift liquid discharge gas production, and comprises the following steps: collecting and drawing a relative time-temperature curve and a relative time-pressure curve in real time. According to the change of the relative time-pressure curve, an inflection point appearing in the curve is taken as a characteristic point of well closure, a gas-liquid interface, a well bottom, well opening and liquid discharge, and the relative time-pressure curve is segmented. Each wellbore process parameter is calculated, whether the plunger ascending speed is in a preset speed range is judged, and if the plunger ascending speed is too fast, the next well closure time is recalculated. According to the collected downhole data, the wellbore process data is calculated through a formula, the switch well time is calculated according to the process data by using an intelligent parameter adjustment algorithm, parameters are optimized, and the purpose of maximizing gas production and liquid production is achieved.
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Citation Information

Patent Citations

  • Liquid level online monitoring method and plunger for monitoring

    CN113550739A