CN217846308U - High-temperature high-pressure variable-diameter rock core holder - Google Patents
High-temperature high-pressure variable-diameter rock core holder Download PDFInfo
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- CN217846308U CN217846308U CN202221203073.7U CN202221203073U CN217846308U CN 217846308 U CN217846308 U CN 217846308U CN 202221203073 U CN202221203073 U CN 202221203073U CN 217846308 U CN217846308 U CN 217846308U
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- 239000011435 rock Substances 0.000 title claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000005485 electric heating Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 239000006260 foam Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a variable diameter rock core holder of high temperature high pressure, including left pressure-bearing closing cap, multistage rubber holder, right pressure-bearing closing cap and electronic computer, high temperature resistant high pressure seal circle is installed to the inner wall inboard of left pressure-bearing closing cap and right pressure-bearing closing cap, both sides are processed respectively in the top of rock core holder inner wall and rock core holder outer wall exhaust hole one and exhaust hole two, the internally mounted of electric heating layer has temperature sensor. This variable diameter rock core holder of high temperature high pressure through the cooperation between multistage rubber holder, high temperature and high pressure resistant sealing washer, electric heating layer, foam insulation layer, reducing rock core holder and the displacement pump, this rock core holder both can realize the fixed of rock core holder and can form the annular space again through "the point" with the barrel and connect, convenient follow-up pressurization, because of multistage rubber holder and the cooperation of different diameter sealing rings again, solve the inconsistent problem of on-the-spot rock specimen diameter and laboratory rock core holder diameter.
Description
Technical Field
The utility model relates to a rock core holder technical field specifically is a variable diameter rock core holder of high temperature high pressure.
Background
The energy is a power source spring for the national social development, fossil energy is a main part of a national energy structure, petroleum and natural gas are buried under the ground for hundreds of meters and thousands of meters, and the storage conditions of the petroleum and the natural gas are greatly different from the traditional cognition of people, so that the seepage process of the fluid in a reservoir is reproduced by an experimental method, the rock core holder has important significance for people to know an oil-gas field and guide the development of the oil-gas field, and the rock core holder is a special device for developing various rock core displacement experiments. The conventional core holder is tested and is limited, especially when high-temperature and high-pressure tests are carried out, the rubber sleeve cannot bear high temperature, when the temperature variation range is large, the tests cannot be carried out normally, and meanwhile, due to the influence of the field drilling process, the field rock sample diameter is not consistent with the diameter of the laboratory core holder, and the displacement test can be caused to generate errors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a variable diameter rock core holder of high temperature high pressure to when carrying out the high temperature high pressure experiment that proposes in solving above-mentioned background art, the gum cover can't bear the high temperature, and when the temperature variation scope is great, the experiment can't normally go on, and because the influence of on-the-spot well drilling process, on-the-spot rock specimen diameter is not completely unanimous with laboratory rock core holder diameter, also can lead to the problem that the displacement experiment produced the error.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a variable diameter rock core holder of high temperature high pressure, includes left pressure-bearing closing cap, multistage rubber holder, right pressure-bearing closing cap and electronic computer, high temperature resistant high pressure seal circle is installed to the inner wall inboard of left pressure-bearing closing cap and right pressure-bearing closing cap, multistage rubber holder's outer wall has set gradually rock core holder inner wall, electric heating layer, foam insulation layer and rock core holder outer wall from interior to exterior, rock core holder inner wall and rock core holder outer wall both sides are fixed continuous with left pressure-bearing closing cap and right pressure-bearing closing cap, the both sides are processed respectively to the top left and right sides of rock core holder inner wall and rock core holder outer wall has exhaust hole one and exhaust hole two, fluid injection mouth one and fluid injection mouth two have been processed respectively to the below left and right sides of rock core holder inner wall and rock core holder outer wall, the internally mounted of electric heating layer has temperature sensor.
Preferably, electronic computer links to each other with temperature sensor, pressure sensor one, pressure sensor two, pressure sensor three, intelligent counter, confining pressure pump, pressure sensor one's both sides are connected with displacement pump and middle container respectively, middle container is connected with reducing rock core holder, reducing rock core holder and electronic computer are connected with the intelligent counter, reducing rock core holder outer end is equipped with pressure sensor two, pressure sensor three and temperature sensor.
Preferably, multistage rubber holder includes one-level rubber clamping sleeve, second grade rubber clamping sleeve, tertiary rubber clamping sleeve, one-level rubber clamping sleeve cup joints with major diameter sealing rubber ring, the left end processing of one-level rubber clamping sleeve is fluted one, and the protruding looks joint of the left end of recess one and second grade rubber clamping sleeve, the recess two of second grade rubber clamping sleeve left end cup joints with the sealing rubber ring of well diameter, the left end processing of tertiary rubber clamping sleeve has protruding two, and protruding two pegs graft with the recess two phase.
Preferably, the external annular fluid of the multistage rubber holder is connected with a confining pressure pump.
Compared with the prior art, the beneficial effects of the utility model are that: the high-temperature high-pressure variable-diameter core holder comprises:
through the cooperation between multistage rubber holder, high temperature and high pressure resistant sealing washer, the electric heating layer, the foam heat preservation layer, reducing rock core holder and the displacement pump, this rock core holder is through "the point" with the barrel connects, both can realize the fixed of rock core holder, can form the annular space again, be convenient for exert the confining pressure, rubber clamping sleeves and seal fixing ring cooperation use at all levels, can carry out the displacement experiment to the rock core of different footpaths, reach the effect of reducing, sealing rubber ring and high temperature and high pressure resistant sealing washer can prevent fluid to get into the tiny gap between the rubber clamping sleeves at all levels, can exert the confining pressure to natural rock core through the annular space, the pressure condition in the simulation reservoir, reflect the flow characteristic of stratum more really, the electric heating cover can be for annular space fluid and rock core heating, there is temperature sensor inside, the outside links to each other with the computer, can reflect inside temperature in real time, when having avoided carrying out the high temperature high pressure experiment, the rubber cover can not bear the high temperature, when the temperature change scope is great, the experiment normally goes on-spot drilling process's influence, the on-site sample diameter is not completely unanimous with laboratory rock core diameter, can lead to the problem that the rock core holder also can lead to the production of displacement experiment error.
Drawings
FIG. 1 is a front cross-sectional view of a high temperature, high pressure, variable diameter core holder;
FIG. 2 is a schematic structural diagram of a multistage rubber core holding sleeve;
FIG. 3 is a schematic structural view of a sealing rubber ring;
fig. 4 is a schematic structural diagram of a core displacement experiment flow.
In the figure: 1. a left pressure-bearing seal cover, 2, a multi-stage rubber clamp, 201, a first-stage rubber clamp sleeve, 202, a second-stage rubber clamp sleeve, 203, a third-stage rubber clamp sleeve, 204, a first groove, 205, a first protrusion, 206, a second groove, 207, a second protrusion, 208, a large-diameter sealing rubber ring, 209, a middle-diameter sealing rubber ring, 3, a right pressure-bearing seal cover, 4, a high-temperature and high-pressure resistant sealing ring, 5, a displacement pump, 6, a middle container, 7, a diameter-variable core clamp, 8, an inner wall of the core clamp, 9, an electric heating layer, 10, a foam heat-insulating layer, 11, an outer wall of the core clamp, 12, a first exhaust hole, 13, a second exhaust hole, 14, a first fluid injection hole, 15, a second fluid injection hole, 16, a temperature sensor, 17, a first pressure sensor, 18, a second pressure sensor, 19, a third pressure sensor, 20, an intelligent meter, 21, a confining pressure pump, 22 and an electronic computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a high-temperature high-pressure variable-diameter core holder comprises a left pressure-bearing sealing cover 1, a multi-stage rubber holder 2, a right pressure-bearing sealing cover 3 and an electronic computer 22, wherein high-temperature and high-pressure resistant sealing rings 4 are installed on the inner sides of the inner walls of the left pressure-bearing sealing cover 1 and the right pressure-bearing sealing cover 3, the outer wall of the multi-stage rubber holder 2 is sequentially provided with a core holder inner wall 8, an electric heating layer 9, a foam heat insulation layer 10 and a core holder outer wall 11 from inside to outside, two sides of the core holder inner wall 8 and two sides of the core holder outer wall 11 are fixedly connected with the left pressure-bearing sealing cover 1 and the right pressure-bearing sealing cover 3, exhaust holes I12 and exhaust holes II 13 are respectively machined in the left side and the right side above the core holder inner wall 8 and the core holder outer wall 11, a fluid injection opening I14 and a fluid injection opening II 15 are respectively machined in the left side and the right side below the core holder inner wall 8 and the core holder outer wall 11, and a temperature sensor 16 is installed inside the electric heating layer 9.
The electronic computer 22 is connected with the temperature sensor 16, the pressure sensor I17, the pressure sensor II 18, the pressure sensor III 19, the intelligent meter 20 and the confining pressure pump 21, two sides of the pressure sensor I17 are respectively connected with the displacement pump 5 and the middle container 6, the middle container 6 is connected with the variable-diameter core holder 7, the variable-diameter core holder 7 and the electronic computer 22 are connected with the intelligent meter 20, and the pressure sensor II 18, the pressure sensor III 19 and the temperature sensor 16 are arranged at the outer end of the variable-diameter core holder 7.
The multistage rubber clamping device 2 comprises a first-stage rubber clamping sleeve 201, a second-stage rubber clamping sleeve 202 and a third-stage rubber clamping sleeve 203, the first-stage rubber clamping sleeve 201 is sleeved with a large-diameter sealing rubber ring 208, a first groove 204 is formed in the left end of the first-stage rubber clamping sleeve 201, the first groove 204 is clamped with a first protrusion 205 at the left end of the second-stage rubber clamping sleeve 202, a second groove 206 at the left end of the second-stage rubber clamping sleeve 202 is sleeved with a middle-diameter sealing rubber ring 209, a second protrusion 207 is formed in the left end of the third-stage rubber clamping sleeve 203, the second protrusion 207 is inserted into the second groove 206, and external annular fluid of the multistage rubber clamping device 2 is connected with the confining pump 21;
through multistage rubber holder 2, high temperature and high pressure resistant sealing washer 4, electric heating layer 9, foam insulation layer 10, cooperation between reducing core holder 7 and the displacement pump 5, this core holder is through "the point" with the barrel connects, both can realize the fixed of core holder, can form the annular space again, be convenient for exert the confining pressure, rubber clamping sleeves at all levels use with the cooperation of seal fixing ring, can carry out the displacement experiment to the rock core of different footpaths, reach the effect of reducing, sealed rubber ring and high temperature and high pressure resistant sealing washer can prevent fluid to get into the small gap between the rubber clamping sleeves at all levels, can exert the confining pressure to natural rock core through the annular space, simulate the pressure condition in the reservoir, reflect the flow characteristic of stratum more really, electric heating sleeve can heat annular space fluid and rock core, there is temperature sensor inside, the outside links to each other with the computer, can reflect inside temperature in real time.
The outer surface of the first-level rubber clamping sleeve 201 covers 24 rubber protruding points which are spirally arranged, the rubber protruding points are connected with a cylinder body in a point mode, the multistage rubber clamping device 2 is fixed and forms an annular space, the left end of the first-level rubber clamping sleeve is an annular groove and is used for being connected with an annular protrusion of the second-level rubber clamping device 2 or being used in a matched mode with a large-diameter rubber sealing fixing ring to fix a large-diameter core, the left end of the second-level rubber clamping sleeve 202 is provided with a large-diameter annular protrusion and a small-diameter annular groove, the large-diameter annular protrusion is matched with the annular groove of the first-level rubber clamping sleeve, the small-diameter annular groove is matched with a protrusion of the third-level rubber clamping sleeve 203 to achieve interconnection of the various stages of rubber clamping sleeves, or being used in a matched mode with the second-level rubber clamping sleeve 202 and the middle-diameter rubber sealing fixing ring to fix a middle-diameter core, the multistage rubber clamping sleeve 203 is wrapped with an electric heating layer 9 and a foam heat preservation layer 10, the outside of the multistage rubber clamping sleeve is connected with an intelligent computer 22, the heating layer 9 and the outer end of the intelligent computer are precisely controlled, the electric heating layer is wrapped on the core 9, the annular space, and the annular space is wrapped by a fluid, and the annular space is used for being connected with the intelligent computer 22, and used for carrying out a.
Principle of operation
When the high-temperature high-pressure variable-diameter core holder is required to be used, firstly, the holder is integrally cylindrical according to the figure 1 and the figure 2, the left side is a left pressure-bearing packing cover 1, the inner wall is tightly attached to a high-temperature and high-pressure resistant sealing ring 4, and the middle part is sequentially from outside to inside: the core holder comprises a core holder inner wall 11, a foam insulating layer 10, an electric heating layer 9 and a core holder inner wall 8. The multistage rubber holder 2 is connected with the inner wall 8' of the core holder in a point mode, an annular space is formed in the middle, fluid can be injected into the annular space through the first fluid injection port 14 and the second fluid injection port 15, annular space gas is exhausted through the first exhaust hole 12 and the second exhaust hole 13, the multistage rubber holder 2 and the annular space fluid can be heated through the electric heating layer 9, and the temperature sensor 16 is connected with the inner wall 8 of the core holder.
Further, the multistage rubber clamper 2 according to fig. 2 and 3 includes: a primary rubber clamping sleeve 201, a secondary rubber clamping sleeve 202 and a tertiary rubber clamping sleeve 203. The primary rubber clamping sleeve 201 is matched with the large-diameter sealing rubber ring 208 and can be used for clamping a large-diameter rock core; a groove I204 at the left end of the primary rubber clamping sleeve 201 can be matched with a protrusion I205 at the left end of the secondary rubber clamping sleeve 202, a groove II 206 at the left end of the secondary rubber clamping sleeve 202 is matched with a middle-diameter sealing rubber ring 209, and a middle-diameter core can be fixed; the left end of the third-level rubber clamping sleeve 203 is provided with a second protrusion 207 matched with a second groove 206, and the first, second and third-level core clamping sleeves are used together to fix a small-diameter core.
Further, as shown in fig. 4, the experimental apparatus for performing core displacement includes a displacement pump 5, an intermediate container 6, a variable diameter core holder 7, a temperature sensor 16, a first pressure sensor 17, a second pressure sensor 18, a third pressure sensor 19, an intelligent meter 20, a confining pressure pump 21, and an electronic computer 22, which are connected in sequence. There is pressure sensor 17 between displacement pump 5 and the middle container 6 for fluid displacement, middle container 6 includes first fluid storage container, two fluid storage containers, middle mixing container, and middle container 6 is the common middle container in laboratory, and concrete structure is no longer repeated, reducing rock core holder 7 both ends are equipped with two pressure sensor 18, three pressure sensor 19, and inside is equipped with temperature sensor 16, first pressure sensor 17, two pressure sensor 18, three pressure sensor 19, intelligent counter 20, confining pressure pump 21 link to each other with electronic computer 22, for the rock core displacement experiment is prior art, no longer repeated here.
Through the above-mentioned theory of operation this case has following advantage:
(1) Because the core holder is connected with the barrel in a point way, the core holder can be fixed, and an annular space can be formed, so that confining pressure can be applied conveniently;
(2) The rubber clamping sleeves at all levels are matched with the sealing fixed ring for use, so that displacement experiments can be performed on cores with different diameters, and the effect of reducing is achieved;
(3) The sealing rubber ring and the high-temperature and high-pressure resistant sealing ring can prevent fluid from entering a tiny gap between each level of rubber clamping sleeve;
(4) The natural core can be applied with confining pressure through the annular space, so that the pressure condition in the reservoir is simulated, and the flow characteristic of the stratum is reflected more truly;
(5) The electric heating layer 9 can heat annular fluid and rock cores, a temperature sensor is arranged inside the electric heating layer, the outside of the electric heating layer is connected with a computer, and the temperature inside the electric heating layer can be reflected in real time.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a variable diameter rock core holder of high temperature high pressure, includes left pressure-bearing closing cap (1), multistage rubber holder (2), right pressure-bearing closing cap (3) and electronic computer (22), its characterized in that: high temperature and high pressure resistant sealing washer (4) are installed to the inner wall inboard of left side pressure-bearing closing cap (1) and right side pressure-bearing closing cap (3), the outer wall of multistage rubber holder (2) has set gradually core holder inner wall (8), electric heating layer (9), foam insulation layer (10) and core holder outer wall (11) from interior to exterior, core holder inner wall (8) and core holder outer wall (11) both sides are fixed continuous with left side pressure-bearing closing cap (1) and right side pressure-bearing closing cap (3), the both sides are processed respectively to the top left and right sides of core holder inner wall (8) and core holder outer wall (11) have exhaust hole (12) and exhaust hole two (13), the below injection inlet left and right sides of core holder inner wall (8) and core holder outer wall (11) is processed respectively has fluid injection inlet one (14) and fluid injection inlet two (15), the internally mounted of electric heating layer (9) has temperature sensor (16).
2. A high-temperature, high-pressure, variable-diameter core holder as recited in claim 1, wherein: electronic computer (22) links to each other with temperature sensor (16), pressure sensor (17), pressure sensor two (18), pressure sensor three (19), intelligent counter (20), confined pressure pump (21), the both sides of pressure sensor (17) are connected with displacement pump (5) and middle container (6) respectively, middle container (6) are connected with reducing rock core holder (7), reducing rock core holder (7) and electronic computer (22) are connected with intelligent counter (20), reducing rock core holder (7) outer end is equipped with pressure sensor two (18), pressure sensor three (19) and temperature sensor (16).
3. A high-temperature, high-pressure, variable-diameter core holder as recited in claim 1, wherein: multistage rubber holder (2) include one-level rubber centre gripping cover (201), second grade rubber centre gripping cover (202), tertiary rubber centre gripping cover (203), one-level rubber centre gripping cover (201) cup joints with major diameter sealing rubber ring (208), the left end processing of one-level rubber centre gripping cover (201) is fluted one (204), and the protruding one (205) looks joint of left end of recess one (204) and second grade rubber centre gripping cover (202), recess two (206) and the sealing rubber ring of well diameter (209) of second grade rubber centre gripping cover (202) left end cup joint, the left end processing of third grade rubber centre gripping cover (203) has protruding two (207), and protruding two (207) are pegged graft mutually with recess two (206).
4. A high-temperature, high-pressure, variable-diameter core holder as recited in claim 1, wherein: the external annular fluid of the multistage rubber clamper (2) is connected with a confining pressure pump (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221203073.7U CN217846308U (en) | 2022-05-19 | 2022-05-19 | High-temperature high-pressure variable-diameter rock core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221203073.7U CN217846308U (en) | 2022-05-19 | 2022-05-19 | High-temperature high-pressure variable-diameter rock core holder |
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| Publication Number | Publication Date |
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| CN217846308U true CN217846308U (en) | 2022-11-18 |
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| CN202221203073.7U Expired - Fee Related CN217846308U (en) | 2022-05-19 | 2022-05-19 | High-temperature high-pressure variable-diameter rock core holder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116046526A (en) * | 2022-12-20 | 2023-05-02 | 南通市中京机械有限公司 | Ultrahigh-temperature high-pressure core holder |
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2022
- 2022-05-19 CN CN202221203073.7U patent/CN217846308U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116046526A (en) * | 2022-12-20 | 2023-05-02 | 南通市中京机械有限公司 | Ultrahigh-temperature high-pressure core holder |
| CN116046526B (en) * | 2022-12-20 | 2023-12-01 | 南通市中京机械有限公司 | Ultrahigh-temperature high-pressure core holder |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221118 |