Testing device and method based on double-end water plugging device

Abstract

The invention discloses a testing device and method based on a double-end water plugging device, and belongs to the technical field of testing of double-end water plugging devices. The testing devicecomprises a water-passing device and an intelligent display and control device. According to the testing device and method based on the double-end water plugging device, the situations of plugging andthe leakage water pressure can be monitored in real time, the pressure is automatically maintained within a predetermined range, the leakage water amount during water injection is recorded, data suchas the water pressure and the flow are transmitted through a data interface, full intellectualization is realized, manpower input is reduced, the accuracy of monitoring data is improved, a plugging structure and a water injection leakage structure are integrated into a box body, thus carrying and placing are convenient, and the downhole explosion proofing effect can also be realized; and the pressure in an airbag is effectively maintained through an intelligent control device, and the service life of the airbag is prolonged; and through the design of separating of a plugging pipeline and a water injection leakage pipeline, the water pressure in the pipelines is maintained more stably, and the testing device and method conform to application of site engineering.

Description

technical field [0001] The invention belongs to the technical field of double-end water stopper testing, and in particular relates to a test device and a test method based on a double-end water stopper. Background technique [0002] Choose a suitable observation place around the coal mining face in the coal mine. Drilling holes above the empty area. The borehole avoids the caving zone and obliquely penetrates the water-conducting fracture zone to reach a certain height above the expected top boundary of the water-conducting fracture zone. Use a double-ended water stopper to block and inject water in sections along the borehole, and measure the leakage flow rate of each section of the borehole to understand the cracking and loosening of the rock and determine the upper boundary height of the water-conducting fracture zone. [0003] The double-ended water stopper is the main equipment for segmental water injection observation of downhole uphole, it includes observation platf...

AI Technical Summary

Problems solved by technology

[0007] However, this scheme does not consider the one-to-one correspondence between time and water loss. To measure the water loss within a certain period of time still requires manual records, and the error is large. In this scheme, the plugging and water injection leakage share a pipeline, which cannot meet the on-site plugging 1. Water injection leakage is connected to separate pipelines; the pipeline interface of this scheme is a common interface. When the pressure is too high, the interface is easy to leak or even fall off, which will affect the monitoring results.

[0008] Existing equipment needs to be manually operated and recorded, and the operation is cumbersome, which will inevitably waste manpower and cause large errors

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