CN107228782B - Gas taking device for rock debris - Google Patents
Gas taking device for rock debris Download PDFInfo
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- CN107228782B CN107228782B CN201610173322.5A CN201610173322A CN107228782B CN 107228782 B CN107228782 B CN 107228782B CN 201610173322 A CN201610173322 A CN 201610173322A CN 107228782 B CN107228782 B CN 107228782B
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- gas
- storage container
- gas storage
- container body
- rock debris
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
Abstract
The invention provides a gas taking device for rock debris. Should get gas device includes: a rock debris crushing degasser; a gas storage container capable of being in sealed communication with the debris-breaking degasser; the separating funnel is communicated with the gas storage container through a hose; and a sealing plug selectively provided at an opening of the air container. The gas taking device can avoid the produced rock debris gas from being mixed with air, ensure the purity of the rock debris gas and ensure the accuracy of the analysis result of the rock debris gas.
Description
Technical Field
The invention relates to the technical field of oil and gas geochemical exploration, in particular to a gas taking device for rock debris.
Background
In conventional oil and gas exploration, gaseous hydrocarbons that are desorbed from a rock sample after being crushed by the rock fragments are referred to as adsorbed gas, also referred to as rock fragment gas. As well logging information in geological exploration and drilling geology, rock debris gas analysis is the first important item. The method mainly aims to evaluate the gas source rock and provide accurate and reliable basis for finding a gas source. Therefore, the collection of the debris gas is the key of the analysis method.
In the prior art, when rock debris gas analysis is carried out, quantitative clean rock debris is taken firstly and put into a special rock debris gas desorption device (patent product) to be crushed, so that adsorbed hydrocarbons in rock debris micropores are forced to be desorbed from the rock debris gas (namely, the rock debris gas). Then, the detritus gas is extracted by a syringe and stored in a brine bottle. Finally, a certain volume of rock debris gas is extracted from the brine bottle by a sample injector and injected into an analysis instrument for analysis so as to obtain data such as the concentration of each hydrocarbon component, the carbon isotope value and the like of the rock debris gas. When the injection syringe is used for transferring the rock debris gas into the brine bottle, the injection syringe is used as a transfer medium, air leakage and air mixing are possible, the rock debris gas is distorted, and the geological application is limited.
Thus, there is a need to design a gas extraction device for rock debris to avoid the problem of air being easily entrained in the collected rock debris gas.
Disclosure of Invention
The invention provides a gas taking device for rock debris, which aims at solving part or all of the technical problems in the prior art. The gas taking device can avoid the problem that air is easily mixed in the rock debris gas.
According to the invention, a gas extraction device for rock debris is proposed, comprising:
a rock debris crushing degasser,
a gas storage container which can be hermetically communicated with the rock debris crushing degasser,
a separating funnel communicated with the gas storage container through a hose,
and a sealing plug selectively provided at an upper end opening of the gas storage container.
In one embodiment, the gas storage container includes:
a gas storage container body having a gas storage chamber,
a collecting pipe which is arranged at the upper end of the gas storage container body in a communicating way and is constructed to be matched with the sealing plug,
the air inlet pipe is communicated with the lower end of the air storage container body and is communicated with the rock debris crushing degasser,
the cross-sectional dimension of the first position of the middle lower end of the gas storage container body is larger than that of the upper end and the lower end, the side wall of the gas storage container body smoothly transits from the upper end to the lower end, and the separating funnel is communicated with the gas storage container at the first position.
In one embodiment, the ratio of the width at the first location of the air container body to the length of the air container body from top to bottom is 1:1.1 to 1: 2.
In one embodiment, the air inlet pipe extends to the inside of the air container body, and the upper end surface of the air inlet pipe is located above the first place.
In one embodiment, a ratio of a distance from the upper end surface of the air inlet pipe to the upper end surface of the air container body to a distance from the upper end surface of the air inlet pipe to the first place is 1:0.5 to 1: 2.
In one embodiment, the gas reservoir is made of a transparent material and the wall of the collection tube is marked with a scale.
In one embodiment, the connection pipe is horizontally disposed at a first position of the gas storage container body.
In one embodiment, the outer wall of the end of the connecting tube connected with the separating funnel is provided with anti-slip lines.
In one embodiment, the air inlet tube is constructed as a tapered tube and the outer wall of the lower end of the air inlet tube is provided with anti-slip threads.
In one embodiment, an arc-shaped recess is provided at the upper end face of the air inlet tube.
Compared with the prior art, the invention has the advantage that when the gas taking device is used for gas taking operation, the gas generated in the debris crushing degasser directly enters the gas storage container through a drainage method without other transfer containers. Therefore, the gas taking device can avoid the generated rock debris gas from being mixed with air, ensure the purity of the rock debris gas and ensure the accuracy of the analysis result of the rock debris gas.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 shows a gas extraction device according to an embodiment of the invention;
FIG. 2 shows an air container according to an embodiment of the invention;
in the drawings, like parts are designated with like reference numerals, and the drawings are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 shows a gas extraction device 100 for rock cuttings according to an embodiment of the invention. As shown in fig. 1, the gas taking apparatus 100 includes a debris breaking degasser 1, a gas storage container 2, a separatory funnel 3, and a sealing plug 4. Therein, a rock debris breaking degasser 1 is used to break a rock sample to allow the escape of rock debris gas. Gas storage vessel 2 is in selective communication with cuttings breaker degasser 1 for receiving and storing and collecting the produced cuttings gas. And the gas storage container 2 can be communicated with the rock debris crushing degasser 1 in a sealing way, so that the rock debris gas generated by the rock debris crushing degasser 1 is prevented from mixing with air in the process of entering the gas storage container 2, and meanwhile, the outward leakage of the rock debris gas is avoided. The separating funnel 3 is communicated with the gas storage container 2 to inject liquid such as saturated brine into the gas storage container 2, so as to help realize the collection of the rock debris gas by a drainage method. Moreover, the separating funnel 3 is communicated with the gas storage container 2 through the hose 5 so as to adjust the liquid level height of the separating funnel 3, thereby facilitating the operation. The sealing plug 4 is used for sealing and plugging the upper end opening of the gas storage container 2 before the gas storage container 2 collects the rock debris gas, thereby ensuring that the rock debris gas is stored in the gas storage container 2. Thus, by using the gas intake device 100, it is possible to prevent the air from being mixed into the rock debris gas and to prevent the rock debris gas from leaking to the outside. Meanwhile, the gas taking device 100 can be used for conveniently collecting and storing the rock debris gas into the gas storage container 2, so that the operation is simplified.
In one embodiment, the gas storage container 2 includes a gas storage container body 21, a collection pipe 22, and an intake pipe 23. Wherein the air container body 21 is constructed in a substantially pear shape. That is, the upper and lower ends of the gas container body 21 have a small cross-sectional size, while the first portion a thereof located at the middle and lower ends has a large cross-sectional size, and the side walls of the gas container body 21 smoothly transition from the upper end to the lower end. The collection pipe 22 is provided at the upper end of the gas storage container body 21 and is constructed in a cylindrical structure. The upper opening of the collecting tube 22 is adapted to cooperate with the sealing plug 4 to seal the gas storage container 2. The air inlet pipe 23 is arranged at the lower end of the air storage container body 21 in a communicating manner and is communicated with the rock debris crushing degasser 1. By this arrangement, the debris gas can move upward more smoothly, enter the gas storage container body 21 through the gas inlet pipe 23, and be collected into the collecting pipe 22. And the gas storage container 2 having the above structure can ensure more efficient collection of the rock debris gas. In addition, the separatory funnel 3 communicates with the gas storage container 2 at the first position a.
In order to ensure the gas extraction effect of the gas container 2, the ratio of the width of the first portion a of the gas container body 21 to the length of the gas container body 21 is 1:1.1 to 1: 2. Illustratively, "width" as used herein refers to the distance from left to right in fig. 1, and "length" refers to the distance from top to bottom in fig. 1. By this arrangement it is further ensured that the cuttings gas is better and faster collected into the collecting pipe 22 to ensure gas collection.
In one embodiment, the air inlet pipe 23 extends to the inside of the air container body 21, and the upper end surface of the air inlet pipe 23 is located above the first location a. Through the arrangement, the rock debris gas outlet which enters the gas storage container body 21 is positioned above the first position A, so that the rock debris gas is prevented from leaking outwards from the first position A. Preferably, the ratio of the distance from the upper end surface of the inlet pipe 23 to the upper end surface of the air container body 21 to the distance from the upper end surface of the inlet pipe 23 to the first point a is 1:0.5 to 1: 2. By this arrangement, leakage of the rock debris gas is prevented, and it is ensured that the rock debris gas smoothly concentrates on the upper end of the gas storage container body 21 and efficiently enters into the collecting pipe 22.
According to the present invention, the gas storage container 2 is made of a transparent material, and a scale is marked on the wall of the collection tube 22. Preferably, the gas storage container 2 is made of glass. Through the arrangement, the total volume of the rock debris gas can be accurately obtained directly through the scales at the collecting pipe 22, so that the mass content of the rock debris gas in the rock debris sample can be accurately calculated, and more real and complete data can be obtained.
In order to facilitate the connection between the air container 2 and the separating funnel 3, a connecting pipe 24 is horizontally disposed at a first position a of the air container body 21. One end of the hose 5 may be fitted over the connecting tube 24 and the other end may be fitted over the separatory funnel 3. Thus, the connection of the air container 2 to the separatory funnel 3 is simplified by providing the connection tube 24. Preferably, an anti-slip pattern is provided on the outer wall of the end of the connecting tube 24 connected to the separatory funnel 3. The tightness of the connection between the air storage container 2 and the hose 5 is ensured by arranging the anti-skid lines, and the risk of liquid leakage is avoided.
According to the present invention, the intake duct 23 is constructed as a tapered tube, and anti-slip threads are provided on the outer wall of the lower end of the intake duct 23. Through the arrangement, the debris gas can be smoothly lifted upwards, the sealing performance of the gas taking device 100 is ensured, and the accuracy of data results is ensured. In a preferred embodiment, an arc-shaped recess is provided at the upper end face of the air intake tube 23. Through this kind of setting, guaranteed the smooth and easy nature that the detritus gas rose on the one hand, on the other hand makes gas storage container 2 wash more easily.
In the present application, the terms "upper" and "lower" are used with reference to the orientation of the gas extraction device 100 during use. In addition, the debris crushing degasser 1 may be constructed as described in patent 200620012068.2.
The method of using the gas extraction device 100 to extract gas is described in detail below with reference to fig. 1 and 2.
First, after a rock debris sample is put into the rock debris crushing degasser 1, the connection state of each part of the gas sampling apparatus 100 is checked. At this time, the gas storage container 2 and the debris crushing degasser 1 are in a shut-off state. Then, saturated brine is injected into the separatory funnel 3, and the saturated brine enters the air container body 21, the collecting pipe 22, the air inlet pipe 23, and the pipe 6 for connecting the air inlet pipe 23 and the debris crushing degasser 1 through the hose 5 to be evacuated of air everywhere. Then, the sealing plug 4 is put on the collection tube 22 to seal the upper end of the gas container 2. The rock debris breaking degasser 1 is then activated to break the rock debris sample so that the rock debris gas therein leaks out. Next, the separatory funnel 3 was moved so that the liquid level in the separatory funnel 3 was 2 to 3 cm higher than the liquid level in the collection tube 22. Then, a gas valve (not shown) of the debris crushing degasser 1 is opened, so that the debris gas enters the gas inlet pipe 23 through the pipe 6, enters the gas storage container body 21 and is collected in the collecting pipe 22. At this time, the saturated brine in the gas storage container 2 is introduced into the separatory funnel 3 through the connection tube 24. After all the rock debris gas in the rock debris crushing degasser 1 enters the collecting pipe 22, the gas valve on the rock debris crushing degasser 1 is closed. Finally, the separatory funnel 3 is moved so that the liquid level in the separatory funnel 3 is leveled with the liquid level in the collection pipe 22, and the volume of the debris gas is read through the scale on the collection pipe 22. To this end, the debris gas is stored in the collection tube 22 and, when required, a sample needle may be passed through the sealing plug 4 to extract a quantity of debris gas for gas analysis.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical scope of the present invention disclosed, and such changes or variations should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A gas extraction device for rock fragments, comprising:
a rock debris crushing degasser,
a gas storage container capable of being hermetically communicated with the rock debris crushing degasser,
a separating funnel communicated with the gas storage container through a hose,
and a sealing plug selectively provided at an upper end opening of the air container;
the gas storage container comprises a gas storage container body, a collecting pipe which is arranged at the upper end of the gas storage container body in a communicating manner, the collecting pipe is constructed to be matched with the sealing plug, a gas inlet pipe is arranged at the lower end of the gas storage container body in a communicating manner, the gas inlet pipe is communicated with the debris crushing degasser, the cross-sectional size of a first position of the gas storage container body, which is positioned at the middle-lower end, is larger than that of the upper end and the lower end, the side wall of the gas storage container body smoothly transits from the upper end to the lower end, and the separating funnel is communicated with the gas storage container at the first position;
a connecting pipe is horizontally arranged at a first position of the air storage container body; one end of the hose can be sleeved on the connecting pipe, and the other end of the hose can be sleeved on the separating funnel;
the air inlet pipe is constructed as a pipe with a taper, and anti-slip lines are arranged on the outer wall of the lower end of the air inlet pipe.
2. The gas extraction device of claim 1, wherein the ratio of the width of the first location of the gas container body to the length of the gas container body from top to bottom is 1:1.1 to 1: 2.
3. The gas intake apparatus according to claim 1, wherein the intake pipe extends to the inside of the gas storage container body, and an upper end surface of the intake pipe is located above the first place.
4. The gas intake device according to claim 3, wherein a ratio of a distance from the upper end surface of the gas intake pipe to the upper end surface of the gas storage container body to a distance from the upper end surface of the gas intake pipe to the first position is 1:0.5 to 1: 2.
5. The gas extraction device of claim 1, wherein the gas storage container is made of a transparent material and a scale is marked on the wall of the collection tube.
6. The gas extraction device of claim 1, wherein an anti-slip texture is provided on an outer wall of the end of the connecting tube connected to the separating funnel.
7. The gas intake apparatus according to claim 1, wherein an arc-shaped notch is provided at an upper end face of the intake pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173322.5A CN107228782B (en) | 2016-03-24 | 2016-03-24 | Gas taking device for rock debris |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173322.5A CN107228782B (en) | 2016-03-24 | 2016-03-24 | Gas taking device for rock debris |
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| Publication Number | Publication Date |
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| CN107228782A CN107228782A (en) | 2017-10-03 |
| CN107228782B true CN107228782B (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610173322.5A Active CN107228782B (en) | 2016-03-24 | 2016-03-24 | Gas taking device for rock debris |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114428166A (en) * | 2020-09-29 | 2022-05-03 | 中国石油化工股份有限公司 | Method and system for evaluating oil-gas-containing property of stratum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100573089C (en) * | 2006-04-06 | 2009-12-23 | 中国石油化工股份有限公司 | A kind of device that is used for preparing or collecting the rock adsorptive gaseous hydrocarbon |
| JP5009688B2 (en) * | 2007-06-01 | 2012-08-22 | 独立行政法人海洋研究開発機構 | Powder collection device |
| CN104458325B (en) * | 2014-10-27 | 2017-04-12 | 中国石油化工股份有限公司 | Device and method for oil-gas-water three-phase quantitative and hermetical sampling for indoor experiment |
| CN204941536U (en) * | 2015-07-02 | 2016-01-06 | 中国石油化工股份有限公司 | The device of gas is got for mud and landwaste |
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