Dynamic water invasion monitoring device and method

A technology for dynamic monitoring and water intrusion, which can be used in surveying, earth-moving drilling, and fluid extraction, etc., and can solve the problem of not being able to reflect the real situation of water intrusion in gas wells as a whole.

Inactive Publication Date: 2019-02-26
SOUTHWEST PETROLEUM UNIV
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Neither of the two methods can fully reflect th

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Embodiment Construction

[0020] With a fractured-porous edge water gas reservoir, the cumulative water production can reach 268.80×10 4 m 3 And a dynamic monitoring method of water invasion in a gas reservoir with 26 gas-water production wells in the gas reservoir is taken as an example. The present invention will be further described in conjunction with the accompanying drawings.

[0021] refer to figure 1 . A water intrusion dynamic monitoring device is composed of a conductivity measurement system, a signal transmission system, a water sample component analysis system, a radioisotope tracer release system, and a device internal fixation system, characterized in that: the conductivity measurement The system is installed inside the protective cover 10 and consists of a data line 6, a host 7, a selector switch 8, a conductivity meter 9, a metal wire 11, and a metal ball 12. The host 7 is installed on the side wall of the protective cover 10, and the conductivity meter 9 passes through the data line...

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Abstract

The invention relates to a dynamic water invasion monitoring device and method for monitoring water invasion of gas wells. According to the technical scheme, the device comprises a conductivity measuring system, a signal transceiver system, a water sample component analyzing system, a radioisotope tracer releasing system and an internal device fixing system; the conductivity measuring system is installed in a protective cover to serve as a complete system for measuring conductivity; the signal transceiver system serves as an integrated system for receiving and transmitting signals; the water sample component analyzing system serves as an analyzing system for comprehensively analyzing chemical properties of formation water; the radioisotope tracer releasing system serves as a measuring system for releasing and collecting a tracer; in the internal device fixing system, bridge plugs separate a water yield formation, the stability and rapidity of measurement are ensured, and the cost of the device is low. A dynamic water invasion monitoring system is formed according to tests of the systems above, water invasion conditions obtained by means of the method are accurate and complete, andthe device and the method are used for similar gas wells.

Description

technical field [0001] The present invention relates to a water intrusion dynamic monitoring device and method for monitoring production loss caused by water intrusion in gas wells. Background technique [0002] In the development of water drive gas reservoirs, the water outflow of gas wells caused by the intrusion of edge and bottom water will not only increase the difficulty of gas reservoir development and production, but also cause the loss of gas well productivity, reduce the recovery rate of gas reservoirs, and affect the development of gas reservoirs benefit. Accurate judgment of water influx dynamics, especially monitoring early water influx, is the basis for active and effective development of gas reservoirs. [0003] At present, there are two main methods of water intrusion monitoring: 1. Water sample measurement According to the measurement of water samples, the type of produced water can be judged and its source can be analyzed, and then whether water intrusion ...

Claims

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Application Information

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IPC IPC(8): E21B43/20E21B47/11E21B47/12E21B47/00
CPCE21B43/20E21B47/00E21B47/11E21B47/12
Inventor 谭晓华李胜胜李晓平董凯毛正林杨豪李劲涵
Owner SOUTHWEST PETROLEUM UNIV
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