Water stop device for layered water pumping tests and water pumping testing device and method

A technology of pumping test and water stop device, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well parts, etc. Shorten the water distance and other problems, to achieve the effect of simple and efficient pumping test, convenient and simple operation of pumping test, and protection of stability

Pending Publication Date: 2020-05-19
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In actual engineering operation, the traditional water stop device for pumping test is generally composed of rigid joints at both ends and a rubber air bag in the middle. The water outlet port and the air pressure pipe interface are directly connected to the rubber air bag. Expansion to the well wall occurs, but the expansion process of the airbag is not completely caused by the transverse elastic deformation of the rubber, but also depends on the longitudinal shrinkage and deformation of the rubber airbag along the pipe wall. big contraction
Although the water outlet interface, air pressure interface and water level gauge monitoring interface are all sealed, the rubber airbag will st

Method used

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  • Water stop device for layered water pumping tests and water pumping testing device and method
  • Water stop device for layered water pumping tests and water pumping testing device and method
  • Water stop device for layered water pumping tests and water pumping testing device and method

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Embodiment 1

[0059] Such as Figure 1-Figure 3 As shown, a water stop device 24 for stratified water pumping test includes: a body, a rubber air bag 6, an air pressure pipe 15 and a water outlet pipe 14.

[0060] The main body is arranged vertically, and the main body is used to support the rubber bladder to avoid the instantaneous shrinkage of the rubber bladder when it shrinks. The rubber airbag 6 is sheathed on the outer wall of the body, wherein the rubber airbag 6 is ring-shaped. The air pressure tube 15 is located in the body, and one end of the air pressure tube 15 protrudes from the top of the body to be the air pressure interface 4, and the other end of the air pressure tube 15 is an air outlet 7, which communicates with the rubber air bag 6, and the other end of the air pressure tube 15 is provided There are two branch air outlets 7, and the two air outlets 7 pass through the body to communicate with the rubber air bag 6, thereby communicating with the external air compressor eq...

Embodiment 2

[0098] The structure of the water-stopping device 24 adopted in this embodiment is the same as that of Embodiment 1, the difference is that this embodiment provides a pumping test device, including the water-stopping device 24 for layered pumping tests as described above, The pumping test device also includes a submersible pump 25 , and the top of the submersible pump 25 is connected to the water inlet port 10 . It also includes a water level monitoring connecting pipe, an air pressure connecting pipe 20 and a water outlet drill pipe 19, wherein the water level monitoring connecting pipe is vertically arranged, the upper end of the water level monitoring connecting pipe is connected with the second water level monitoring interface 12, and the water level monitoring connecting pipe is provided with evenly spaced The drilled holes can facilitate water to enter the water level monitoring connecting pipe through the drilled holes. The height of the borehole is 10m. Wherein the ai...

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Abstract

The invention relates to a water stop device for layered water pumping tests and a water pumping testing device and method. The water stop device comprises a vertical body, a rubber air bag, an air pressure pipe and a vertical water outlet pipe, wherein the rubber air bag sleeves the outer wall of the body; the air pressure pipe is located in the body, one end of the air pressure pipe stretches the top end of the body to form an air pressure connector, an air outlet is formed in the other end of the air pressure pipe, and the air outlet is communicated with the rubber air bag; a water inlet isformed in the lower end of the water outlet pipe, the lower end of the water outlet pipe penetrates through the body, and an air outlet is formed in the upper end of the air outlet pipe. The water stop device greatly avoids the phenomenon that on the current market, a water stop device with a water-stop rubber air bag is shrunk due to expansion to cause air leakage, no influence on the stabilityof a sand and gravel well wall can be caused, the water stop device can be reused, and the engineering cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of engineering geological survey, and in particular relates to a water stop device for a layered pumping test, a pumping test device and a test method. Background technique [0002] The water stop in the layered pumping test is an important work in the field of engineering geological survey, usually the water stop effect can directly affect the accuracy of the whole pumping test. [0003] In actual engineering operation, the traditional water stop device for pumping test is generally composed of rigid joints at both ends and a rubber air bag in the middle. The water outlet port and the air pressure pipe interface are directly connected to the rubber air bag. Expansion to the well wall occurs, but the expansion process of the airbag is not completely caused by the transverse elastic deformation of the rubber, but also depends on the longitudinal shrinkage and deformation of the rubber airbag along the pipe wa...

Claims

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Application Information

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IPC IPC(8): E21B33/126E21B43/14
CPCE21B33/1208E21B33/126E21B43/14
Inventor 朱大鹏何磊王佩谢昌建何佳伟张佳美慧
Owner SOUTHWEST PETROLEUM UNIV
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