An ultra-low permeability rock sample gas permeability multi-method test device on the same machine
A technology for measuring gas permeability and testing equipment, which is applied in the field of petroleum engineering, and can solve problems such as failure of sealing parts, damage to internal pressure, and influence on measurement results, etc., to achieve the effects of improving efficiency, reducing floor space, and saving costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0065] Embodiment 1: pressure pulse decay method test implementation steps;
[0066] 1) Put the rock core 50 to be tested into the permeation chamber 20, put a leather sheath 21 around it, block it with a sealing plug 23 above, and tighten the contact place between the leather sheath 21 and the sealing plug 23 with a clamp;
[0067] 2) Open all valves on the pressurizing device 60 except the high-pressure intake valve 618, vacuumize the gas path with a vacuum pump 63, cover the chassis 40 and insert the fixed plug 22 fixed together into the upstream end of the leather sheath 21 , then fill the water, increase the confining pressure, carry out constant temperature to the water body with confining pressure through the constant temperature water bath system 64, carry out constant temperature to the air circuit outside the permeation cavity 20 through the air bath;
[0068] 3) Close all valves on the pressurization device 60, select a suitable sub-expansion chamber according to th...
Embodiment 2
[0078] Embodiment 2: implementation steps of in situ test method;
[0079] 1) Put the rock core 50 to be tested into the permeation cavity 20, put a leather sheath 21 around it, block the downstream end of the leather sheath 21 with a sealing plug 23, cover the chassis 30, and insert the fixed plug 22 fixed together into the leather sheath In the upstream end of 21, the place where the holster 21 contacts with the fixed plug 22 and the sealing plug 23 is tightened with a clamp; different from the pressure pulse attenuation test, the plug 26 on the downstream (gas outlet) of the rock core to be tested is replaced It is a plugging block 262 without pores in the middle, and the gas permeated by the rock core 50 to be tested cannot enter the downstream gas path through the plugging block 262 . The air path from the exhaust pipe 40 to the second air extraction needle valve 624 is not used in this method test, and the following valves do not include the valves in this part of the ai...
Embodiment 3
[0095] Embodiment 3: implementation steps of broken rock core permeability test;
[0096] 1) The rock core to be tested is crushed to a predetermined mesh and put into a sample tank with a suitable volume, and the sample tank is sealed with the groove at the fixed plug 22 on the chassis 30 through an adapter; the downstream of the rock core to be tested (gas outlet) The blocking block 26 is replaced with a blocking block 262 without air holes in the middle, and the gas cannot flow into the exhaust system 62 through the blocking block 262 . The gas path between the plugging plug 262 and the second air extraction needle valve 624 is not used in this method test, and the following valves do not include the valves in this part of the gas path.
[0097] 2) Open all valves on the intake pipeline 611 except the high-pressure intake valve 618, vacuumize the intake pipeline 611 with a vacuum pump 63, cover the chassis 30 of the confining pressure chamber 20, and fill the water without ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| volume | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More