CN209400384U - A kind of rock material measuring gas permebility device - Google Patents
A kind of rock material measuring gas permebility device Download PDFInfo
- Publication number
- CN209400384U CN209400384U CN201822183368.2U CN201822183368U CN209400384U CN 209400384 U CN209400384 U CN 209400384U CN 201822183368 U CN201822183368 U CN 201822183368U CN 209400384 U CN209400384 U CN 209400384U
- Authority
- CN
- China
- Prior art keywords
- guide head
- metal guide
- seal plug
- rubber seal
- measuring gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model belongs to rock material characterization technique field, and in particular to a kind of rock material measuring gas permebility device, comprising: epoxy gel coating, rubber seal plug, metal guide head, valve, rubber tube and manual vacuum aspiration pump；Measured hole is provided on the test surfaces of rock sample or chamber palisades, described rubber seal plug one end is arranged in measured hole, the other end of rubber seal plug is connected with metal guide head one end, and the metal guide head other end is connect by rubber tube with manual vacuum aspiration pump；Valve is provided on the rubber tube；The test surfaces of rock sample or chamber palisades are also coated with epoxy gel coating.
Description
Technical field
The utility model belongs to rock material characterization technique field, and in particular to a kind of rock material measuring gas permebility
Device.
Background technique
In energy projects fields such as shale gas exploitation, underground natural gas storage tank exploitation and radioactive waste repository research and development, cave
The gas permeability of the materials such as room country rock be carry out production efficiency prediction, leakproofness assessment and safety evaluatio necessary to core join
Number.However, the indoor test method of gas permeability usually requires to apply confining pressure using triaxial test system at present, to guarantee to try
Test the air-proof condition of process；Gas pressurization system is needed simultaneously, forms pressure difference in the sample.The test period requirement of the above method
It is longer, experimental condition is complicated, and cannot achieve in-site measurement.Currently, permeability test method master used by engineering site
It to be hydraulic pressure test method, it is costly, testing efficiency is lower.Therefore, a kind of be simple and efficient, convenient for the rock of field application is researched and developed
The test device and test method of material gas permeability are the requirements of material property scene Fast Evaluation, to above-mentioned energy work
Journey is of great significance.
Utility model content
The purpose of this utility model is that proposing a kind of rock material measuring gas permebility device, gas permeability is solved
Laboratory test low efficiency, cost are big and are difficult to the problem of realizing engineering site test.
The technical scheme adopted by the utility model is
A kind of rock material measuring gas permebility device, comprising: epoxy gel coating, rubber seal plug, metal guide head,
Valve, rubber tube and manual vacuum aspiration pump；Measured hole, the rubber seal plug one are provided on the test surfaces of rock sample
End is arranged in measured hole, and the other end of rubber seal plug is connected with metal guide head one end, the metal guide head other end
It is connect by rubber tube with manual vacuum aspiration pump；Valve is provided on the rubber tube；The test surfaces of rock sample also apply
There is epoxy gel coating.
Barometer is also equipped on manual vacuum aspiration pump as described above；The rubber seal plug generally cylindrical type, institute
The joint face center for stating rubber seal plug and metal guide head is provided with blind hole, blind hole middle section inner diameter is greater than in blind hole,
Lower both ends inner diameter, and blind hole upper/lower terminal hole inner diameter is less than the outer diameter of metal guide head.
The diameter of measured hole as described above is 1cm, depth 5cm.
Metal guide head middle section outer diameter as described above is greater than metal guide head upper/lower terminal outer diameter.
The beneficial effects of the utility model are:
A kind of rock material measuring gas permebility device of the utility model design, by rock sample or chamber rock
Cylindrical instrument connection is drilled through on wall, and subnormal ambient is formed in instrument connection using vacuum-pumping equipment；After stopping pumping, record small
Pore pressure force recovery process；It is fitted test result using circular hole radiant flux Theory Solution, obtains the gas of rock sample or chamber palisades
Permeability.Present apparatus test process is simple, high-efficient, be able to solve gas permeability laboratory test low efficiency, cost it is big and
It is difficult to the problem of realizing engineering site test.
Detailed description of the invention
A kind of rock material measuring gas permebility apparatus structure schematic diagram that Fig. 1 designs for the utility model；
A kind of instrument connection air pressure change mistake for rock material measuring gas permebility device that Fig. 2 designs for the utility model
Journey schematic diagram；
The instrument connection and round rubber for a kind of rock material measuring gas permebility device that Fig. 3 designs for the utility model
The scale diagrams of sealing-plug.
Wherein: 1 be rock sample, 2 be measured hole, 3 be epoxy gel coating, 4 be rubber seal plug, 5 be metal guide head,
6 it is valve, 7 be rubber tube, 8 be barometer, 9 is manual vacuum aspiration pump.
Specific embodiment
A kind of rock material measuring gas permebility device, comprising: epoxy gel coating 3, rubber seal plug 4, metal air guide
First 5, valve 6, rubber tube 7 and manual vacuum aspiration pump 9；Measured hole 2, the rubber are provided on the test surfaces of rock sample 1
4 one end of glue sealing-plug is arranged in measured hole 2, and the other end of rubber seal plug 4 is connected with 5 one end of metal guide head, the gold
Belong to 5 other end of guide head to connect by rubber tube 7 with manual vacuum aspiration pump 9；Valve 6 is provided on the rubber tube 7；Rock
The test surfaces of sample 1 are also coated with epoxy gel coating 3.
The rock material measuring gas permebility device is also mountable on chamber palisades.
Barometer 8 is also equipped on the manual vacuum aspiration pump 9；The rubber seal plug 4 generally cylindrical type, it is described
The joint face center of rubber seal plug 4 and metal guide head 5 is provided with blind hole, blind hole middle section inner diameter is greater than in blind hole,
Lower both ends inner diameter, and blind hole upper/lower terminal hole inner diameter is less than the outer diameter of metal guide head 5.
The diameter of the measured hole 2 is 1cm, depth 5cm.
The 5 middle section outer diameter of metal guide head is greater than 5 upper/lower terminal outer diameter of metal guide head.
A kind of test method of rock material measuring gas permebility device as described above, includes the following steps:
Step 1: instrument connection is drilled through；
Step 2: assembling and testing device；
Step 3: test device subnormal ambient is established；
Step 4: record pressure recovery process；
Step 5: permeability is calculated.
The step 1: drill through instrument connection, comprising: drilled through on rock sample 1 using hand held electric drill diameter be 1cm,
Depth is the cylindrical measured hole 2 of 5cm.
The step 2: assembling and testing device, further includes: in connecing for rubber seal plug 4 and rock sample 1 or chamber palisades
Quick setting epoxy glue 3 is filled in contacting surface, rubber seal plug 4 is filled in into measured hole 2, and sufficiently compacting seals to realize；Metal is led
Gas head 5 is filled in the centre bore of rubber seal plug 4, in ensure to seal；Metal guide head 5 and manual vacuum aspiration pump 9 pass through rubber
Sebific duct 7 connects, and valve 6 is installed on rubber tube 7；Manual vacuum aspiration pump 9 is furnished with can be with the gas of real-time display internal pressure
Stopwatch zeroing will and be used for recording test time by pressure meter 8.
The step 3 establishes test device subnormal ambient, further includes: is evacuated using manual vacuum aspiration pump 9, directly
Reach the minimum air pressure P of setting to the show value of barometer 8min, PminAtmospheric pressure P of the value less than 0.5 timesatm；Stop pumping,
Valve is closed, while starting the stopwatch record time.
The step 4: record pressure recovery process, comprising: the barometer 8 of different moments t during record pressure recovery
Reading P, obtain P v.s.t data.
The step 5: calculating permeability includes: to be fitted according to principle of least square method using circular hole radiant flux Theory Solution
P v.s.t data obtained in step 4 can finally determine gas permeability K；Circular hole radiant flux Theory Solution are as follows:
Wherein, P is that the barometer 8 of t moment is read, unit Pa；PatmFor atmospheric pressure, unit Pa takes under room temperature
It is 105Pa；PminThe reading of barometer 8, unit Pa, P when to close valveminAtmospheric pressure P of the value less than 0.5 timesatm；t-t0
For the stop watch figures corresponding to air pressure P；μ is the coefficient of dynamic viscosity of air, unit Pas, it is taken as 1.9 under room temperature ×
10-5Pa·s；DholeAnd DcoverThe respectively diameter of measured hole 2 and rubber seal plug 4, unit m, and Dcover/Dhole>10。
The utility model is explained in detail above in conjunction with drawings and examples, above-described embodiment is the utility model
One optimal technical scheme, however, the present invention is not limited to the above embodiment, is had in those of ordinary skill in the art
Knowledge in, can also various changes can be made without departing from the purpose of the present invention.In the utility model not
The content being described in detail can use the prior art.
Claims (4)
1. a kind of rock material measuring gas permebility device, it is characterised in that: include: epoxy gel coating (3), rubber seal plug
(4), metal guide head (5), valve (6), rubber tube (7) and manual vacuum aspiration pump (9)；In the test table of rock sample (1)
Be provided on face measured hole (2), the setting of described rubber seal plug (4) one end in measured hole (2), rubber seal plug (4) it is another
End is connected with metal guide head (5) one end, and metal guide head (5) other end is evacuated by rubber tube (7) and manual vacuum
Pump (9) connection；Valve (6) are provided on the rubber tube (7)；The test surfaces of rock sample (1) are also coated with epoxy gel coating
(3)。
2. a kind of rock material measuring gas permebility device according to claim 1, it is characterised in that: described true manually
Barometer (8) are also equipped on empty pump air pump (9)；The rubber seal plug (4) generally cylindrical type, the rubber seal plug
(4) blind hole is provided with the joint face center of metal guide head (5), blind hole middle section inner diameter is greater than blind hole upper/lower terminal
Inner diameter, and blind hole upper/lower terminal hole inner diameter is less than the outer diameter of metal guide head (5).
3. a kind of rock material measuring gas permebility device according to claim 1, it is characterised in that: the measured hole
(2) diameter is 1cm, depth 5cm.
4. a kind of rock material measuring gas permebility device according to claim 2, it is characterised in that: the metal is led
Gas head (5) middle section outer diameter is greater than metal guide head (5) upper/lower terminal outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822183368.2U CN209400384U (en) | 2018-12-25 | 2018-12-25 | A kind of rock material measuring gas permebility device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822183368.2U CN209400384U (en) | 2018-12-25 | 2018-12-25 | A kind of rock material measuring gas permebility device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209400384U true CN209400384U (en) | 2019-09-17 |
Family
ID=67896011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822183368.2U Active CN209400384U (en) | 2018-12-25 | 2018-12-25 | A kind of rock material measuring gas permebility device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209400384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459371A (en) * | 2018-12-25 | 2019-03-12 | 核工业北京地质研究院 | A kind of rock material measuring gas permebility device and its test method |
-
2018
- 2018-12-25 CN CN201822183368.2U patent/CN209400384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459371A (en) * | 2018-12-25 | 2019-03-12 | 核工业北京地质研究院 | A kind of rock material measuring gas permebility device and its test method |
| CN109459371B (en) * | 2018-12-25 | 2024-04-09 | 核工业北京地质研究院 | Rock material gas permeability testing device and testing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105910971B (en) | The simultaneous measuring method of rich organic matter compact rock core gas permeability and diffusion coefficient | |
| CN107576774B (en) | Coal seam containing gas mechanical characteristic analogue experiment method under uniaxial compression | |
| CN103758513B (en) | A kind of evaluation method simulating full-size well wall stability | |
| CN111693440B (en) | High-simulation rock fracture seepage test method | |
| CN104535422B (en) | A kind of method of simulation test drilling deformation | |
| CN105067494A (en) | Permeability testing method and device based on radial percolation experiment | |
| CN203643307U (en) | Gas-liquid two-phase loop corrosion experiment device | |
| CN104266951A (en) | System and method for accurately measuring dynamic change of porosity of loaded coal rock | |
| CN108844850A (en) | Shale adsorption-desorption and decompression exploitation simulator and method based on dynamic equilibrium | |
| CN111521543B (en) | Compact reservoir core static pressurization visual imbibition experimental method | |
| CN104964880A (en) | Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box | |
| CN107014698A (en) | The measurement apparatus and measuring method of a kind of high temperature compressed coefficient of rock and permeability | |
| CN209400384U (en) | A kind of rock material measuring gas permebility device | |
| CN201945540U (en) | Apparatus capable of automatically measuring adsorption swelling amount of coal petrography in high pressure gas | |
| CN107907464B (en) | Device and method for measuring performance of permeable stone cement slurry for fracturing | |
| CN109459371A (en) | A kind of rock material measuring gas permebility device and its test method | |
| CN203241324U (en) | Shale gas permeability determinator | |
| CN112082922B (en) | Method for determining seepage permeability of large rectangular flat model rock sample plane | |
| CN115219380A (en) | Device and method for measuring gas content of shale in closed crushing field | |
| CN214668429U (en) | Rock sample gas permeability testing arrangement | |
| CN111058832A (en) | Experimental device and method for simulating fracture of two well cementation interfaces | |
| CN108181440B (en) | Experimental device for testing water quality index of reinjection water of large-scale underground water-sealed cave depot | |
| CN106324217B (en) | A kind of conventional physical property measurement device device of the organic reef rock core based on miniature sample | |
| CN112611698A (en) | Rock sample gas permeability testing device and testing method | |
| CN112683748B (en) | Device and method for testing dynamic permeability of coal rock in fracturing physical simulation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |