CN2529205Y - Automatic measuring device for throttle capillary gas flow measurement - Google Patents
Automatic measuring device for throttle capillary gas flow measurement Download PDFInfo
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- CN2529205Y CN2529205Y CN 01278258 CN01278258U CN2529205Y CN 2529205 Y CN2529205 Y CN 2529205Y CN 01278258 CN01278258 CN 01278258 CN 01278258 U CN01278258 U CN 01278258U CN 2529205 Y CN2529205 Y CN 2529205Y
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- throttle capillary
- capillary tube
- gas flow
- rock
- test
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Abstract
The utility model discloses an automatic measuring device for using for measuring the air flux of a throttle capillary, which consists of a throttle capillary, a pressure sensor, a digital display and a microprocessor; a set of pressure sensor an display are respectively arranged on both ends of the throttle capillary, which are connected with a computer; a sealing gasket is arranged on one end of the throttle capillary with a much larger outer diameter; the sealing gasket is arranged inside an outer cover of the rubber sleeve; a pressed cover and the outer cover are connected with a tightly pressed sealing ring. The utility model overcomes the problem that the measure and test for the air flux with a rock infiltration ratio often adopts a manual operation method at present; the utility model can enhance the working efficiency for testing and analyzing the rock infiltration ratio and can also shorten the measuring time for the air flux with the infiltrated rock sample within 5 minutes so as to enhance the working efficiency for testing and analyzing the rock infiltration ratio, enhance the test and analysis speed for the rock infiltration ratio and guarantee the test quality greatly.
Description
Technical field
The design relates in particular to a kind of throttle capillary tube measurement of gas flow apparatus for automatically measuring about a kind of device of rock permeability determination experiment instrument.
Background technology
Gas is called rock gas permeability by the ability of open rock medium under the certain pressure difference, the darcy flow law is followed in the metering of gas flow.
Have the history of over half a century for the research of rock gas permeability gas flow measurement method.With regard to rock permeability was measured, gas was crucial by the flow metering of unit volume rock under the certain pressure difference.In the oil field prospecting development, the rock permeability test is a large amount of, loaded down with trivial details.
Before the forties in 20th century, gas is by the ability of rock under the certain pressure reduction of commercial measurement that Occidental Petroleum Corporation's employing mercury manometr, water manometer and flow controller are combined.
Early 1940s, USSR (Union of Soviet Socialist Republics) is according to darcy flow law principle, and gas is by the ability of rock under the certain pressure reduction of technical measurement of employing high-precision pressure table and soap-foam flowmeter combination.
The sixties in 20th century, American core company continues to continue to use mercury manometr, water manometer, and unique variation is to adopt tensimeter on the measurement of gas flow first, reflects the variation of gas flow by the variation of pressure difference value.
The eighties in 20th century, the researchist improves on the method for USSR (Union of Soviet Socialist Republics) soap-foam flowmeter amount both at home and abroad.Main improvement is at the flowtube of soap-foam flowmeter two scale positions platinum wire of welding two groups of diameter 1mm up and down, adopts electrical secondmeter metering gas flow.
The nineties in 20th century, exploratory development research institute of domestic Sichuan Petroleum Administration adopts gas meter, tensimeter, high-pressure metering pump composite set to measure under the certain pressure difference gas flow by rock on rock permeability is measured.
Mercury manometr or soap-foam flowmeter are used in traditional rock permeability test gas flow metering mostly, must adopt artificial visual inspection mercury slug, the variation of water column liquid level and give record, perhaps the method for end user's part work and part study number record gas is by the soap foam flowtube time, this gas meter metering method is complex operation not only, and personal error is big.
Along with continuing to increase of oil field prospecting development difficulty, the test of low-permeability rock sample permeability is more and more.When rock permeability＜1.0 * 10
-3μ m
2The time, tested rock sample pressure at two ends difference Δ P is less, and permeability is low more, and the subtle change of Δ P is difficult to metering more.To use the soap-foam flowmeter method to be example, the rock sample permeability is lower than 0.01 * 10
-3μ m
2, the soap foam is chronic by soap foam flowtube, and measuring a gas flow by rock sample needs 2～4 hours usually.
Traditional rock permeability test gas flow metering method test result poor reproducibility, relative error is bigger.
The utility model content
The design's purpose is to provide a kind of analysis precision height (relative error is little), test speed is fast, analysis cost is low, easy and simple to handle throttle capillary tube measurement of gas flow apparatus for automatically measuring, makes the measurement of gas flow in the rock permeability test process realize robotization, microcomputerization fully.
For achieving the above object, the throttle capillary tube measurement of gas flow apparatus for automatically measuring that the design provides, be made up of throttle capillary tube, pressure transducer, digital indicator and microcomputer, the throttle capillary tube two ends respectively install a sleeve pressure sensor and display additional and link with computing machine;
The sheathed packing washer of the end that the throttle capillary tube external diameter is bigger, in the overcoat of the rubber bush of packing into, gland is connected with overcoat and compresses O-ring seal.
Described throttle capillary tube is a glass tube.
The internal diameter of described throttle capillary tube is 0.05-0.07mm, and length is 40-70mm.
Described display is a digital indicator, can show the pressure transducer measured value.
Described gland is threaded with being connected to of overcoat.
The design has following advantage:
The first, how by hand the measurement of gas flow during the change rock permeability is tested method of operating.
The second, improve rock permeability test analysis work efficiency, make tight rock sample gas flow Measuring Time shorten to 5 minutes and finish, improved the analytical work efficient of rock permeability test greatly with interior.
Three, improve rock permeability analytical test quality, use the national grade ii standard material to proofread and correct P (pressure) and Q (flow) relation, the measuring error of tester is carried out SY/T5336-1996 " rock core conventional method of analysis " standard, has guaranteed test mass.
Description of drawings
Below in conjunction with accompanying drawing the design is done concrete description, wherein:
Fig. 1 is the design's a plane structure chart;
Fig. 2 is the design's a throttle capillary tube three-dimensional cutaway view.
Embodiment
Embodiment
Please earlier with reference to Fig. 1, the textural association that has shown throttle capillary tube measurement of gas flow apparatus for automatically measuring, this device is made up of throttle capillary tube, pressure transducer, digital indicator and microcomputer, promptly respectively installs a sleeve pressure sensor and digital indicator at the throttle capillary tube two ends additional and links with computing machine.Said apparatus be connected to known technology, do not describe at this.
According to the infiltrative difference of survey rock sample, can select the throttle capillary tube of different measuring scope respectively for use.The throttle capillary tube that the design adopts is that internal diameter is 0.05-0.07mm, and length is the glass tube of 40-70mm, and the throttle capillary tube internal diameter that present embodiment adopts is 0.06mm, and length is 60mm.
Please refer to Fig. 2 again, need throttle capillary tube is installed in the rubber bush when measuring the flow of gas by rock, when the throttle capillary tube measuring system is measured the ability that rock permission gas passes through under the certain pressure difference, must guarantee that measurement gas all flows out no gas permeation via the endoporus of glass capillary.For this reason, the design is enclosed within the bigger end of glass capillary (2) external diameter with packing washer (3), and in the overcoat of the rubber bush of packing into (1), gland (4) is connected by fine thread with overcoat (1), compresses O-ring seal, feeds gas and gets final product test sample.
The design's measuring principle and method of testing:
The design is based on the assembling that following principle is finished measurement mechanism:
Adopting the soap-foam flowmeter measurement gas is the classical way of rock permeability test by the ability of rock, this device is a parent with the soap-foam flowmeter on the measurement of gas flow, adopt P (pressure) and Q (flow) regression technique, use throttle capillary tube to replace soap-foam flowmeter.Concrete technological process and test philosophy are as follows:
1, use soap-foam flowmeter to measure a collection of rock sample, can obtain the gas flow data of this batch sample under the certain pressure difference, promptly each piece sample all has the P-Q value corresponding.
2, use throttle capillary tube instead, the same a collection of rock sample of surveying the soap-foam flowmeter again, the flow Q that can look this sample this moment is known, at this moment sample can show a pressure on the number value (P) by pressure transducer on digital indicator, and a batch sample just can obtain pressure P under the throttle capillary tube test condition and the corresponding relation of flow Q.
3, do the P-Q regression curve, use national grade ii standard material (the fixedly standard specimen of permeability value) to proofread and correct regression curve, and then set up the corresponding curve of a standard P-Q, the reappearance of specimen analysis result and relative error.
4, with standard P-Q regression curve input computing machine, work out corresponding data processing software, just can use throttle capillary tube to measure under the certain pressure difference gas flow automatically by rock according to the P-Q corresponding relation.
The design has simple in structure, and is easy to operate, advantage such as measuring accuracy height, measuring speed are fast.It makes rock permeability test gas flow metering work thoroughly take leave of manual operations, the test philosophy advanced person.Through using the verification of many group national grade ii standard materials, test result has good reappearance, measuring relative errors is controlled in SY/T 5336-1996 " rock core conventional method of analysis " critical field, can satisfy the needs of all kinds of rock permeability test jobs of different size.
Comparative Examples by narrating below can clearly be seen that this point:
Calendar year 2001, use the design to finish 76 mouthfuls of preparatory reconnaissance boreholes, proven reserves well and oil-field development effect inspection chamber core permeability and detect about 10,000, analyze quality and all reach the requirement of SY/T 5336-1996 " rock core conventional method of analysis " industry standard regulation.Table 1 is artificial soap-foam flowmeter method and the comparison of throttle capillary tube method flow rate test data of selecting 3 rock samples of Daqing oil field well to do, and from comparison result, two kinds of method of testing test results are identical substantially, relative deviation＜± 1%, and measuring accuracy meets the requirements.
Artificial soap-foam flowmeter method of table 1 and the comparison of the design's test data
| Sample number | Length cm | Diameter cm | Atmospheric pressure kPa | Temperature ℃ | Air viscosity mPas | Test pressure MPa | Hollow billet flow ml/s | Artificial flow ml/s | Relative deviation % |
| 1-5-1 | 9.88 | 6.90 | 99.0 | 16.5 | 0.0179 | 0.5 | 0.09312 | 0.09257 | 0.36 |
| 1-4-1 | 9.82 | 6.93 | 99.0 | 16.5 | 0.0179 | 0.5 | 0.19994 | 0.06095 | -0.51 |
| 1-2-3 | 10.28 | 6.72 | 98.8 | 16.0 | 0.0179 | 0.5 | 0.7728 | 0.7719 | 0.12 |
Claims (5)
1, a kind of throttle capillary tube measurement of gas flow apparatus for automatically measuring is made up of throttle capillary tube, pressure transducer, digital indicator and microcomputer, it is characterized in that:
The throttle capillary tube two ends respectively install a sleeve pressure sensor and display additional and link with computing machine;
The sheathed packing washer of the end that the throttle capillary tube external diameter is bigger, in the overcoat of the rubber bush of packing into, gland is connected with overcoat and compresses O-ring seal.
2, throttle capillary tube measurement of gas flow apparatus for automatically measuring as claimed in claim 1 is characterized in that, described throttle capillary tube is a glass tube.
3, throttle capillary tube measurement of gas flow apparatus for automatically measuring as claimed in claim 1 or 2 is characterized in that, the internal diameter of described throttle capillary tube is 0.05-0.07mm, and length is 40-70mm.
4, throttle capillary tube measurement of gas flow apparatus for automatically measuring as claimed in claim 1 is characterized in that, described display is a digital indicator.
5, throttle capillary tube measurement of gas flow apparatus for automatically measuring as claimed in claim 1 is characterized in that, described gland is threaded with being connected to of overcoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278258 CN2529205Y (en) | 2001-12-25 | 2001-12-25 | Automatic measuring device for throttle capillary gas flow measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278258 CN2529205Y (en) | 2001-12-25 | 2001-12-25 | Automatic measuring device for throttle capillary gas flow measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529205Y true CN2529205Y (en) | 2003-01-01 |
Family
ID=33681786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01278258 Expired - Lifetime CN2529205Y (en) | 2001-12-25 | 2001-12-25 | Automatic measuring device for throttle capillary gas flow measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529205Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512840A (en) * | 2013-10-15 | 2014-01-15 | 三峡大学 | Method for screening rock sample by measuring fixed porosity |
| CN104121951A (en) * | 2014-08-11 | 2014-10-29 | 深圳国技仪器有限公司 | Multifunctional air resistance piece |
| CN109974350A (en) * | 2019-03-06 | 2019-07-05 | 青岛海尔空调器有限总公司 | A kind of method and debugging air conditioner model machine of determining target capillary pipe length |
-
2001
- 2001-12-25 CN CN 01278258 patent/CN2529205Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512840A (en) * | 2013-10-15 | 2014-01-15 | 三峡大学 | Method for screening rock sample by measuring fixed porosity |
| CN103512840B (en) * | 2013-10-15 | 2015-07-01 | 三峡大学 | Method for screening rock sample by measuring fixed porosity |
| CN104121951A (en) * | 2014-08-11 | 2014-10-29 | 深圳国技仪器有限公司 | Multifunctional air resistance piece |
| CN109974350A (en) * | 2019-03-06 | 2019-07-05 | 青岛海尔空调器有限总公司 | A kind of method and debugging air conditioner model machine of determining target capillary pipe length |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111225 Granted publication date: 20030101 |