CN102778417B - Ultrahigh pressure and high temperature core holder - Google Patents
Ultrahigh pressure and high temperature core holder Download PDFInfo
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- CN102778417B CN102778417B CN201110123861.5A CN201110123861A CN102778417B CN 102778417 B CN102778417 B CN 102778417B CN 201110123861 A CN201110123861 A CN 201110123861A CN 102778417 B CN102778417 B CN 102778417B
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Abstract
The invention relates to an ultrahigh pressure and high temperature core holder, which comprises a core cabin, and a left seal plug and a right seal plug positioned at two ends of a core cabin cylindrical space and screwed tightly as well as sealed by a left compaction nut and a right compaction nut. The outer ends of the left seal plug and the right seal plug are respectively equipped with a left built-in needle valve and a right built-in needle valve. The inside of the core cabin 1 cylindrical space includes a core, choke plugs and a sleeve. Two sides of the core are respectively equipped with a choke plug. The choke plugs are in close contact with the core, and they are placed in a cylindrical sleeve inside the core cabin together. The outer wall of the core cabin is equipped with an upper built-in needle valve and a lower built-in needle valve. The holder core cabin, the choke plugs, the seal plugs, the compaction nuts, the built-in needle valves and valve accessories all employ a titanium alloy material, and the sleeve adopts polyetheretherketone. The core holder has the characteristics of ultrahigh pressure and high temperature, as well as light mass. With a highest bearable pressure of 200MPa, a highest temperature of 250DEG C, and an overall mass of 2600g, the core holder can realize precise weighing in a precision balance, thus providing a reliable guarantee for core flow experiments under ultrahigh pressure and high temperature conditions.
Description
Technical field
The present invention relates to exploration of oil and gas field, development field rock core flowing experiment proving installation used, specifically a kind of high pressure high temperature core holding unit.
Background technology
In rock core flowing experiment test process, for the geologic condition of simulation surpressure oil gas field, experiment will be carried out under high pressure high temperature condition, existing core holding unit general work pressure is no more than 100MPa, and clamper sleeve adopts elastomeric material at present, under high pressure, gas can infiltrate in rubber, causes the gas flow cannot accurate-metering.In addition, existing clamper quality is large, on precision balance, cannot weigh, the gas under unsuitable accurate Calculation condition of high voltage and the saturation degree of liquid.
Summary of the invention
In order to complete fluid under high pressure high temperature condition (gas and liquid) rock core flowing experiment, and can realize the precision weighing of core holding unit.
The technical issues that need to address of the present invention are, overcome the deficiencies in the prior art, provide a kind of high pressure high temperature, the core holding unit that own wt is lighter.
High pressure high temperature core holding unit of the present invention is achieved in that
Described clamper comprises that the two ends in rock core cabin 1,1 tubular space, rock core cabin have by the right sealing-plug 6-2 of left sealing-plug 6-1 of the right compacting nut of left compacting nut 7-1 7-2 screwing hermetic; There are respectively left built-in needle valve 8-1 and right built-in needle valve 8-2 in the described right sealing-plug 6-2 of left sealing-plug 6-1 outer end;
In described 1 tubular space, rock core cabin, comprise rock core 2, plug 4 and sleeve 3, a plug 4 of the each placement in both sides of described rock core 2, plug and rock core 2 close contacts are positioned in 1 cylindrical sleeve 3 in rock core cabin jointly;
Described rock core cabin 1 outer wall has upper built-in needle valve 8-3 and lower built-in needle valve 8-4.
In concrete enforcement,
The entrance and exit that the built-in needle valve 8-1 in a described left side and right built-in needle valve 8-2 are clamper Experimental Flowing Object;
The hollow plug bar that has level to connect in described plug 4, plug bar outer end opening is connected by the entrance and exit of the built-in needle valve 8-1 in a left side in sealing-plug 6 and right built-in needle valve 8-2 and clamper Experimental Flowing Object.
Described rock core cabin 1 outer wall has upper built-in needle valve 8-3 and lower built-in needle valve 8-4, and by upper valve accessories 9-1 and lower valve annex 9-2 and clamper confined pressure fluid intake and exhausr port connection.
Between described sleeve 3 and plug 4, there are left compensate gasket 5-1 and right compensate gasket 5-2; The thickness of each compensate gasket is the half of the difference of distance between the described right sealing-plug 6-2 of left sealing-plug 6-1 and described plug and rock core 2 close contacts distances.Distance between described sleeve outer rim 3 and plug 4 is less than or equal to 1mm.
Rock core cabin, plug, sealing-plug, compacting nut, built-in needle valve and the valve accessories of described clamper are titanium alloy;
The material of described clamper sleeve 3 is polyetheretherketone.
In sum, unique design has been done in high pressure high temperature core holding unit valve of the present invention and sealing, and clamp body and bush material are screened.
Valve design: in order to meet the requirement that quality is light, 4 valves of clamper all adopt built-in aciculiform valve, see assembly 8 in accompanying drawing 1, have farthest alleviated the quality of clamper.
The Seal Design of sleeve and plug: adopt sleeve to contact sealing with the face of plug.
The Seal Design of plug and sealing-plug: adopt multiple washer sealing between plug bar and sealing-plug, see accompanying drawing 2.
The selection of clamp body material: because titanium alloy has high pressure resistant high temperature resistantly and quality is light, therefore select the material of main part of titanium alloy material as clamper.
The selection of clamper bush material: employing polyetheretherketone is material, it has the feature of the high high-temperature-resistant high-pressure-resistant of hardness, especially can solve the problem that traditional rubber bush gases at high pressure infiltrate, and makes core experiment more accurate.
The effect of invention shows, this core holding unit can complete rock core flowing experiment under high pressure high temperature condition, and maximum working pressure (MOP) can reach 150MPa, tests withstand voltage 200MPa, 250 DEG C of maximum temperatures, and quality only has 2600g, can realize precision weighing.
Brief description of the drawings
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is the sealing schematic diagram of plug of the present invention and sealing-plug.
Embodiment
Further illustrate the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1:
High pressure high temperature core holding unit of the present invention comprises 1,2, rock core cabin sealing-plug, 2 compacting nuts, 2 valve accessories, 4 built-in needle valves, plug, sleeve, compensate gasket.
Specifically be implemented as follows: the plug of first selecting appropriate length according to rock core length; Then rock core is put into sleeve, a plug of the each placement in sleeve both sides, utilizes external force to make plug and rock core close contact; Cutting-sleeve, makes the distance maximum between sleeve outer rim and plug be no more than 1mm; Add compensate gasket, the thickness of compensate gasket equals the half of the difference of distance between the right sealing-plug of left sealing-plug and described plug and rock core close contact distance; Sealing-plug is loaded onto at plug bar two ends, and entirety is put into rock core cabin; Compacting nut is loaded onto at two ends, last rock core cabin, and employing instrument tightens, and has completed the process that this core holding unit is placed rock core.
In accompanying drawing 1, the built-in needle valve in two of left and right is for No. 8 the entrance and exit of clamper Experimental Flowing Object, and upper and lower two built-in needle valves are respectively confined pressure fluid intake and exhausr port No. 8.
Claims (6)
1. a high pressure high temperature core holding unit, is characterized in that:
Described clamper comprises rock core cabin (1), in described tubular space, rock core cabin (1), comprise rock core (2), plug (4) and sleeve (3), the each plug (4) of placing in both sides of described rock core (2), plug and rock core (2) close contact is positioned in the cylindrical sleeve (3) in rock core cabin (1) jointly;
The two ends in tubular space, rock core cabin (1) have by left compacting nut (7-1), the left sealing-plug (6-1) of right compacting nut (7-2) screwing hermetic, right sealing-plug (6-2); There are respectively left built-in needle valve (8-1) and right built-in needle valve (8-2) in described left sealing-plug (6-1), right sealing-plug (6-2) outer end;
The built-in needle valve in a described left side (8-1) and right built-in needle valve (8-2) are the entrance and exit of clamper Experimental Flowing Object;
The hollow plug bar that has level to connect in described plug (4), plug bar outer end opening is connected with the entrance and exit of clamper Experimental Flowing Object by the built-in needle valve in a left side (8-1) in sealing-plug (6) and right built-in needle valve (8-2);
Described rock core cabin (1) outer wall has upper built-in needle valve (8-3) and lower built-in needle valve (8-4); Rock core cabin, plug, sealing-plug, compacting nut, built-in needle valve and the valve accessories of described clamper are titanium alloy;
The material of the sleeve (3) of described clamper is polyetheretherketone.
2. high pressure high temperature core holding unit as claimed in claim 1, is characterized in that:
Described rock core cabin (1) outer wall has upper built-in needle valve (8-3) and lower built-in needle valve (8-4), and connects with clamper confined pressure fluid intake and exhausr port by upper valve accessories (9-1) and lower valve annex (9-2).
3. high pressure high temperature core holding unit as claimed in claim 1, is characterized in that:
Between described sleeve (3) and plug (4), there are left compensate gasket (5-1) and right compensate gasket (5-2); The thickness of each compensate gasket is the half of the difference of distance between the described right sealing-plug of left sealing-plug (6-1) (6-2) and described plug and rock core (2) close contact distance.
4. high pressure high temperature core holding unit as claimed in claim 3, is characterized in that:
Distance between described sleeve (3) outer rim and plug (4) is less than or equal to 1mm.
5. high pressure high temperature core holding unit as claimed in claim 1, is characterized in that:
Described rock core cabin (1) outer wall has upper built-in needle valve (8-3) and lower built-in needle valve (8-4), and connects with clamper confined pressure fluid intake and exhausr port by upper valve accessories (9-1) and lower valve annex (9-2);
Between described sleeve (3) and plug (4), there are two compensate gaskets in left and right (5); The thickness of each compensate gasket is the half of the difference of distance between the described right sealing-plug of left sealing-plug (6-1) (6-2) and described plug and rock core (2) close contact distance.
6. high pressure high temperature core holding unit as claimed in claim 5, is characterized in that:
Distance between described sleeve (3) outer rim and plug (4) is less than or equal to 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123861.5A CN102778417B (en) | 2011-05-13 | 2011-05-13 | Ultrahigh pressure and high temperature core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123861.5A CN102778417B (en) | 2011-05-13 | 2011-05-13 | Ultrahigh pressure and high temperature core holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102778417A CN102778417A (en) | 2012-11-14 |
| CN102778417B true CN102778417B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110123861.5A Active CN102778417B (en) | 2011-05-13 | 2011-05-13 | Ultrahigh pressure and high temperature core holder |
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| Country | Link |
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| CN (1) | CN102778417B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940720B (en) * | 2014-04-18 | 2016-03-23 | 西南石油大学 | A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step |
| CN112986287A (en) * | 2021-04-15 | 2021-06-18 | 中国科学院地质与地球物理研究所 | Ultrahigh-pressure nonmetal core holder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599891A (en) * | 1984-06-07 | 1986-07-15 | Temco, Inc. | TCH--tri-axial core holder |
| CN1103165A (en) * | 1993-11-20 | 1995-05-31 | 大庆石油管理局勘探开发研究院 | Automatic measuring instrument for permeability of rock core |
| CN2204421Y (en) * | 1994-07-30 | 1995-08-02 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院 | Device for measuring diffusion-coefficient of rock |
| CN2932388Y (en) * | 2006-05-25 | 2007-08-08 | 中国石化股份胜利油田分公司地质科学研究院 | Slip-type ultrahigh temperature core catcher |
| CN101446542A (en) * | 2008-12-15 | 2009-06-03 | 南通市飞宇石油科技开发有限公司 | Triaxial core holder |
-
2011
- 2011-05-13 CN CN201110123861.5A patent/CN102778417B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599891A (en) * | 1984-06-07 | 1986-07-15 | Temco, Inc. | TCH--tri-axial core holder |
| CN1103165A (en) * | 1993-11-20 | 1995-05-31 | 大庆石油管理局勘探开发研究院 | Automatic measuring instrument for permeability of rock core |
| CN2204421Y (en) * | 1994-07-30 | 1995-08-02 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院 | Device for measuring diffusion-coefficient of rock |
| CN2932388Y (en) * | 2006-05-25 | 2007-08-08 | 中国石化股份胜利油田分公司地质科学研究院 | Slip-type ultrahigh temperature core catcher |
| CN101446542A (en) * | 2008-12-15 | 2009-06-03 | 南通市飞宇石油科技开发有限公司 | Triaxial core holder |
Non-Patent Citations (2)
| Title |
|---|
| 潘昊等.环抱式密封岩心夹持器的设计与研制.《石油仪器》.2005,第19卷(第2期),14-16. |
| 环抱式密封岩心夹持器的设计与研制;潘昊等;《石油仪器》;20050430;第19卷(第2期);14-16 * |
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| Publication number | Publication date |
|---|---|
| CN102778417A (en) | 2012-11-14 |
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