CN103175765B - Low-porosity measurer - Google Patents
Low-porosity measurer Download PDFInfo
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- CN103175765B CN103175765B CN201310095948.5A CN201310095948A CN103175765B CN 103175765 B CN103175765 B CN 103175765B CN 201310095948 A CN201310095948 A CN 201310095948A CN 103175765 B CN103175765 B CN 103175765B
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Abstract
The invention provides a low-porosity measurer which comprises an air source system, a vacuum system, a core chamber system and a measurement system, wherein the air source system comprises an air bottle, a first adjustment valve and a second adjustment valve; the air bottle is connected with the first adjustment valve and the second adjustment valve respectively; the vacuum system comprises a vacuum pump; the core chamber system comprises a core chamber lower seat, a core chamber upper cover, a core sleeve and a plastic rubber sleeve; the core sleeve is arranged in the center of the core chamber lower seat; the plastic rubber sleeve is arranged inside the core sleeve; an air nozzle is arranged at one side of the plastic rubber sleeve and is connected with the vacuum pump; and fixing nuts are arranged at the periphery of the core sleeve of the core chamber lower seat and are connected with the core chamber lower seat and the core chamber upper cover. The low-porosity measurer can measure the porosity of various types of rocks, in particular rocks with extremely low porosity; and the low-porosity measurer is advanced in design, high in measurement speed, high in accuracy, high in repetitiveness, wide in measurement range and easy to operate.
Description
Technical field
The present invention relates to a kind of low-porosity measurer, belong to the factor of porosity field tests of low-porosity rock.
Background technology
Traditional gas method porosity measurement, adopt the cumulative volume of the method computation rule rock sample of kind of calliper, and adopt mercury to make the method for work agent for the measurement of irregular rock sample cumulative volume more, the data measured also exist certain error, the measurement of particle volume uses helium porosimeter, its data also also exist certain error, volume of voids uses its difference, its error is the superposition of two measuring error, when measuring macroporsity, these errors are negligible for Influence on test result, but low-porosity time error is large especially on the impact of result.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of low-porosity measurer.
Low-porosity measurer of the present invention, mainly comprises air supply system, vacuum system, core chamber's system, measuring system:
Described air supply system mainly comprises gas cylinder (1), the first variable valve (2) and the second variable valve (3), and described gas cylinder (1) is connected with the first variable valve (2), the second pressure regulator valve (3) respectively;
Described vacuum system comprises vacuum pump (4);
Described core chamber's system comprises seat (5) and core chamber's upper cover (6) under core chamber, under described core chamber, the central authorities of seat (5) are provided with rock core sleeve (7), plastics gum cover (8) is provided with in described rock core sleeve (7), the side of described plastics gum cover (8) is provided with valve (9), described valve (9) is connected with vacuum pump (4), under described core chamber, seat 5 is fixedly connected with by nut (10) with core chamber upper cover 6
Described measuring system comprises valve a, valve b, valve c, valve d, valve e, valve f, valve g, valve h, volume pipe a, volume pipe b, pressure gauge a and pressure gauge b,
Wherein,
Described vacuum pump (4) is connected with valve (e), is connected to core chamber's system and valve (d), and described valve d is connected with valve c again;
Described gas cylinder (1) one end is connected with the first variable valve (2), valve h successively, and then is connected to core chamber's system, is also connected with pressure gauge a between described valve h and core chamber's system;
The other end of described gas cylinder (1) is connected with valve b with the second variable valve (3), valve a, volume pipe a successively, then is connected respectively to core chamber's system and valve c, is also connected with pressure gauge b between described volume pipe a and valve b,
Described valve f, volume pipe b and valve g are connected with core chamber system successively.The present invention has following technique effect: the present invention adds the special plastic gum cover of other a set of volume pipe device and packaging rock core on the basis of general voidage analyzer, can the low especially rock porosity of all kinds of especially factor of porosity of Accurate Determining, advanced design, measuring speed are fast, accuracy is high, Repeatability is good, measurement range is wide, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention.
Fig. 2 is the structural drawing of core chamber's system in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail, is easier to understand, grasp to make technical solution of the present invention.
As shown in Figure 1, 2, low-porosity measurer of the present invention, comprises air supply system, vacuum system, core chamber's system, measuring system:
Described air supply system mainly comprises gas cylinder (1), the first variable valve (2) and the second variable valve (3), and described gas cylinder (1) is connected with the first variable valve (2), the second pressure regulator valve (3) respectively;
Described vacuum system comprises vacuum pump (4);
Described core chamber's system comprises seat (5) and core chamber's upper cover (6) under core chamber, under described core chamber, the central authorities of seat (5) are provided with rock core sleeve (7), plastics gum cover (8) is provided with in described rock core sleeve (7), the side of described plastics gum cover (8) is provided with valve (9), described valve (9) is connected with vacuum pump (4), under described core chamber, seat 5 is fixedly connected with by nut (10) with core chamber upper cover 6
Described measuring system comprises valve a, valve b, valve c, valve d, valve e, valve f, valve g, valve h, volume pipe a, volume pipe b, pressure gauge a and pressure gauge b,
Wherein,
Described vacuum pump (4) is connected with valve e, is connected to core chamber's system and valve d, and described valve d is connected with valve c again;
Described gas cylinder (1) one end is connected with the first variable valve (2), valve h successively, and then is connected to core chamber's system, is also connected with pressure gauge a between described valve h and core chamber's system;
The other end of described gas cylinder (1) is connected with valve b with the second variable valve (3), valve a, volume pipe a successively, then is connected respectively to core chamber's system and valve c, is also connected with pressure gauge b between described volume pipe a and valve b,
Described valve f, volume pipe b and valve g are connected with core chamber system successively.
The job step of low-porosity measurer of the present invention is as follows:
1) open core chamber's upper cover 6, rock core is put into plastics gum cover 8, build core chamber's upper cover 6;
2) vacuum pump 4 is opened, the surplus air of finding time in plastics gum cover 8;
3) open the first variable valve 2 and valve h, add after ring is depressed into 0.8-1MPa to core chamber's system and close;
4) open the second variable valve 3 and valve a adds helium in volume pipe a, measure pressure P
1;
5) opening valve b injects in core chamber's system by the high-pressure helium in volume pipe a, waits for pressure equilibrium, record pressure P
2, according to formula
calculate volume of voids;
6) shutoff valve b, opens valve c, by intrasystem for core chamber gas emptying, measures the ring pressure pressure P in ring pressure space
3;
7) open valve f, Huan Ya core chamber system room air and volume pipe b balance, after having balanced, and record pressure P
4, according to formula
calculate the volume in ring pressure space;
8) in core chamber's system, the volume of connection valve 9, pipeline is known as V
always, the volume of plastics gum cover 8 is known as V
mould, according to formula V
rock is total=V
always-V
ring-V
mouldcalculate the cumulative volume of rock core.
Finally it should be noted that obviously, those skilled in the art can carry out various change and distortion to this patent and not depart from the spirit and scope of the present invention.Like this, if these amendments of this patent and distortion belong within the scope of patent claims and equivalent technologies thereof, then this patent is also intended to comprise these changes and distortion.
Claims (1)
1. low-porosity assay method, is characterized in that, measures low-porosity measurer structure used as follows, comprises air supply system, vacuum system, core chamber's system, measuring system:
Described air supply system mainly comprises gas cylinder (1), the first variable valve (2) and the second variable valve (3), and described gas cylinder (1) is connected with the first variable valve (2), the second pressure regulator valve (3) respectively;
Described vacuum system comprises vacuum pump (4);
Described core chamber's system comprises seat (5) and core chamber's upper cover (6) under core chamber, under described core chamber, the central authorities of seat (5) are provided with rock core sleeve (7), plastics gum cover (8) is provided with in described rock core sleeve (7), the side of described plastics gum cover (8) is provided with valve (9), described valve (9) is connected with vacuum pump (4), under described core chamber, seat (5) is fixedly connected with by nut (10) with core chamber's upper cover (6)
Described measuring system comprises valve a, valve b, valve c, valve d, valve e, valve f, valve g, valve h, volume pipe a, volume pipe b, pressure gauge a and pressure gauge b,
Wherein,
Described vacuum pump (4) is connected with valve e, is connected to core chamber's system and valve d, and described valve d is connected with valve c again;
Described gas cylinder (1) one end is connected with the first variable valve (2), valve h successively, and then is connected to core chamber's system, is also connected with pressure gauge a between described valve h and core chamber's system;
The other end of described gas cylinder (1) is connected with valve b with the second variable valve (3), valve a, volume pipe a successively, then is connected respectively to core chamber's system and valve c, is also connected with pressure gauge b between described volume pipe a and valve b,
Described valve f, volume pipe b and valve g are also connected with core chamber system successively,
Assay method comprises the steps:
1) open core chamber's upper cover (6), rock core is put into plastics gum cover (8), build core chamber's upper cover (6);
2) vacuum pump (4) is opened, the surplus air of finding time in plastics gum cover (8);
3) open the first variable valve (2) and valve h, add after ring is depressed into 0.8-1MPa to core chamber's system and close;
4) open the second variable valve (3) and valve a adds helium in volume pipe a, measure pressure P
1;
5) opening valve b injects in core chamber's system by the high-pressure helium in volume pipe a, waits for pressure equilibrium, record pressure P
2, according to formula
calculate volume of voids;
6) shutoff valve b, opens valve c, by intrasystem for core chamber gas emptying, measures the ring pressure pressure P in ring pressure space
3;
7) open valve f, Huan Ya core chamber system room air and volume pipe b balance, after having balanced, and record pressure P
4, according to formula
calculate the volume in ring pressure space;
8) in core chamber's system, the volume of connection valve (9), pipeline is known as V
always, the volume of plastics gum cover (8) is known as V
mould, according to formula V
rock is total=V
always-V
ring-V
mouldcalculate the cumulative volume of rock core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095948.5A CN103175765B (en) | 2013-03-25 | 2013-03-25 | Low-porosity measurer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095948.5A CN103175765B (en) | 2013-03-25 | 2013-03-25 | Low-porosity measurer |
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| Publication Number | Publication Date |
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| CN103175765A CN103175765A (en) | 2013-06-26 |
| CN103175765B true CN103175765B (en) | 2015-06-17 |
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| CN201310095948.5A Active CN103175765B (en) | 2013-03-25 | 2013-03-25 | Low-porosity measurer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592211A (en) * | 2013-11-18 | 2014-02-19 | 深圳先进技术研究院 | Porosity measuring method and device of porous material |
| CN107167407A (en) * | 2016-03-07 | 2017-09-15 | 中国石油化工股份有限公司 | A kind of rock porosity determines device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508531A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Method for determining compact rock porosity |
| CN201242522Y (en) * | 2008-07-31 | 2009-05-20 | 中国石油天然气股份有限公司 | Apparatus for measuring low-leakage and ultra-low leakage rock core coke porosity |
| CN203164093U (en) * | 2013-03-25 | 2013-08-28 | 南通市飞宇石油科技开发有限公司 | Low-porosity tester |
-
2013
- 2013-03-25 CN CN201310095948.5A patent/CN103175765B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508531A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Method for determining compact rock porosity |
| CN201242522Y (en) * | 2008-07-31 | 2009-05-20 | 中国石油天然气股份有限公司 | Apparatus for measuring low-leakage and ultra-low leakage rock core coke porosity |
| CN203164093U (en) * | 2013-03-25 | 2013-08-28 | 南通市飞宇石油科技开发有限公司 | Low-porosity tester |
Non-Patent Citations (1)
| Title |
|---|
| 迟善武,刘更民.智能型岩石气体孔隙度测量仪的研制.《仪表技术与传感器》.1996,(第2期),第25-28页. * |
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| CN103175765A (en) | 2013-06-26 |
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