CN113969757A - High-temperature and high-pressure environment simulation cabin structure for operation of fidelity corer - Google Patents
High-temperature and high-pressure environment simulation cabin structure for operation of fidelity corer Download PDFInfo
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- CN113969757A CN113969757A CN202111164928.XA CN202111164928A CN113969757A CN 113969757 A CN113969757 A CN 113969757A CN 202111164928 A CN202111164928 A CN 202111164928A CN 113969757 A CN113969757 A CN 113969757A
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- 238000004088 simulation Methods 0.000 title claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 44
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims 2
- 238000011065 in-situ storage Methods 0.000 abstract description 17
- 239000011148 porous material Substances 0.000 abstract description 9
- 108010066057 cabin-1 Proteins 0.000 description 18
- 238000012360 testing method Methods 0.000 description 15
- 238000005553 drilling Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000012351 Integrated analysis Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
The invention discloses a high-temperature and high-pressure environment simulation cabin body structure for operation of a fidelity coring device, which comprises a core cabin, wherein the outer diameters of two ends of the core cabin are larger than that of the middle part of the core cabin; the top of the core cabin is provided with a middle end cover, the top of the middle end cover is a small-diameter end, and the bottom of the middle end cover is a large-diameter end; the large-diameter end of the middle end cover is connected with the top of the core cabin, and a rock sample pressing block is arranged in the top of the core cabin; the top of the small-diameter end is provided with a drill rod cabin which is of a multi-section structure, the in-situ temperature, pore pressure and pressure of the rock sample are monitored in real time in the rock core cabin through a temperature environment control system, a pore pressure control system and a pressure control system, and the high-temperature high-pressure deep in-situ environment is simulated in the rock core cabin, so that the rock core is kept in an original' state.
Description
Technical Field
The invention relates to the technical field of core exploration equipment, in particular to a high-temperature high-pressure environment simulation cabin structure for operation of a fidelity core extractor.
Background
The general burial depth of resources in Europe and America is less than 2000m, while over 70% of resources in China are buried deeper than 2000m and shallow resources are gradually exhausted, and extend to deep parts at a speed of more than 10m per year. The exploitation depth of oil and gas resources reaches 8418m, the external dependence of petroleum in China reaches 67 percent (2017), and the oil and gas resources far exceed the internationally recognized energy safety warning line (50 percent). Therefore, exploring energy resources to the deep part is the most urgent practical problem in China at present, is also a major strategic and scientific problem in China, and is a major energy safety problem in China.
In marching to the deep part of the earth, research (deep drilling, deep engineering scientific rules and deep resource development and utilization) needs to be developed step by step from 3 levels, wherein the most important is the research on the deep engineering scientific rules. The current research exploration is to use a 'common core', and the deep in-situ environment is very complicated. The 'common core' obtained by deep drilling releases components such as pressure, temperature, pore water and the like, and is seriously distorted, so that the measured physical and mechanical parameters of the related rock stratum are irrelevant to the occurrence environment of the earth deep part. Therefore, in order to explore the rock physical mechanical difference rules under real environments with different depths and realize accurate evaluation of deep resource reserves, the concept of original 'position' -five guarantor 'is firstly provided, namely pressure maintaining (osmotic pressure maintaining), quality maintaining (component maintaining), moisture maintaining (humidity maintaining), temperature maintaining (temperature maintaining) and light maintaining (luminous flux maintaining), a brand new' five guarantor 'coring' and 'five guarantor' test integrated analysis and test system is planned to be independently developed, and the purposes of researching and developing the original 'position' rock core physical mechanical properties under the deep real endowment environment, exploring and developing the deep in-situ rock mechanical theory and test technology are achieved through the common work of a plurality of systems such as the five guarantor coring system, the fidelity shift storage system, the fidelity real-time test and analysis system and the like.
Before the whole set of deep in-situ coring system is applied to field scientific drilling, experimental simulation needs to be carried out indoors in advance to effectively verify the feasibility of the equipment and carry out calibration of relevant parameters. At present, the technology is still blank at home and abroad, so a deep coring simulation test and a five-guarantee capability calibration platform are designed and invented according to needs, and the deep in-situ fidelity coring high-temperature high-pressure simulation cabin structure is one of key technologies.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-temperature and high-pressure environment simulation cabin structure for operation of a fidelity coring device, and solves the problems that the prior art cannot simulate a deep-ground high-temperature and high-pressure environment indoors, provides a simulation rock mass sample for a deep in-situ fidelity coring system, realizes indoor experimental simulation of drilling of the fidelity coring device in a simulation test cabin, ensures that the deep in-situ coring system is effectively verified and calibrated before being applied to field scientific drilling, and is unfavorable for exploring the deep-ground environment and researching the mechanical behavior of the deep rock mass.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the high-temperature and high-pressure environment simulation cabin body structure for the operation of the fidelity coring device comprises a core cabin in a hollow cylindrical structure, wherein the outer diameters of two ends of the core cabin are larger than that of the middle part of the core cabin, and a plurality of reinforcing circular rings are convexly arranged on the circumferential outer wall of the middle part of the core cabin along the axial direction of the circumferential outer wall;
a loading oil cylinder is arranged at the bottom of the core cabin, the end surface of a cylinder body of the loading oil cylinder is hermetically connected with the bottom of the core cabin, a core seat is arranged at the piston end of the loading oil cylinder, and the core seat is positioned inside the core cabin;
the top of the core cabin is provided with a middle end cover, the top of the middle end cover is a small-diameter end, and the bottom of the middle end cover is a large-diameter end; the end face of the large-diameter end of the middle end cover is hermetically connected with the end face of the top of the core cabin, and a rock sample pressing block is arranged in the top of the core cabin;
the top of the small-diameter end of the middle end cover is provided with a drill rod cabin which is of a multi-section structure in a sealing mode, an upper end cover is arranged at the opening of the top of the drill rod cabin, and the upper end cover is provided with a plurality of liquid injection channels communicated with the rock core cabin.
Furthermore, a first connecting part and a second connecting part which are in cylindrical structures are respectively arranged on the outer walls of the two ends of the core cabin in a protruding mode, and the outer diameters of the first connecting part and the second connecting part are larger than the outer diameter of the middle of the core cabin;
a space is arranged between the upper end face of the first connecting part and the upper end face of the core cabin; the lower end face of the second connecting part is flush with the lower end face of the core cabin, and a circular mounting groove is formed in the lower end face of the second connecting part;
the end face of the cylinder body of the loading oil cylinder is of a step structure, a plurality of first sealing ring mounting ring grooves are formed in the outer wall of the circumference of the cylinder body of the loading oil cylinder, the end face of the cylinder body of the loading oil cylinder is arranged in the circular mounting groove, and first connecting bulges with the same diameter as the outer diameter of the second connecting part are arranged on the outer wall of the circumference of the cylinder body of the loading oil cylinder;
be provided with the clamp device on the outer wall of the junction of loading cylinder body terminal surface and second connecting portion, the clamp device includes the clamp body that a pair of mirror image set up, and the cross section of two clamp bodies is the semicircle ring structure, all is provided with the annular groove that the opening set up relatively on the circumference inner wall of two clamp bodies, forms hollow cylinder structure after the lateral wall of the straight face department of two clamp bodies is connected, and second connecting portion and first connection protruding block are in annular groove.
Furthermore, a first limiting groove is formed in the step surface of the cylinder body of the loading oil cylinder, and a second limiting groove matched with the first limiting groove is formed in the lower end face of the second connecting portion.
Furthermore, a mounting ring is convexly arranged on the circumferential outer wall of the top of the rock sample pressing block, and a plurality of second sealing ring mounting ring grooves are formed in the circumferential outer wall of the mounting ring; the lower end face of the large-diameter end of the middle end cover is provided with a circular ring groove, the mounting ring is arranged in the circular ring groove, and the circumferential outer wall of the mounting ring is in contact with the inner wall of the circular ring groove;
the lower end face of the mounting ring and the lower end face of the large-diameter end of the middle end cover are both in contact with the upper end face of the first connecting part; the hoop device is arranged on the circumferential outer wall of the joint of the middle end cover large-diameter end and the first connecting portion, and the middle end cover large-diameter end and the first connecting portion are arranged in the annular groove.
Furthermore, the upper end face of the first connecting portion is provided with a third limiting groove, and the lower end face of the large-diameter end of the middle end cover is provided with a fourth limiting groove matched with the third limiting groove.
Further, the small-diameter end of the middle end cover is connected with the bottom end of the drill rod cabin in a sealing mode.
Further, the drill rod cabin comprises a first section of drill rod cabin, a second section of drill rod cabin, a third section of drill rod cabin and a fourth section of drill rod cabin which are sequentially connected from bottom to top; the bottom end of the first section of the drill rod cabin is connected with the small-diameter end of the middle end cover, and the upper end cover is connected with the top of the fourth section of the drill rod cabin;
the middle part of the second section of drill rod cabin is provided with a pipeline inlet, the middle part of the fourth section of drill rod cabin is provided with a pipeline outlet, and the pipeline inlet and the pipeline outlet are communicated through the inner cavities of the second section of drill rod cabin and the fourth section of drill rod cabin.
Furthermore, the outer wall of the middle part end cover is of a multi-step structure with the outer diameters increasing from top to bottom in sequence.
Furthermore, a connecting seat is arranged at the lower end of the core seat, a slot with a downward opening is arranged at the lower end of the connecting seat, and the slot is used for being connected with the piston end of the loading oil cylinder; the bottom of the slot is provided with a positioning column extending downwards; the side surface of the slot is provided with a plurality of pin holes for fixing;
the upper end of the rock core seat is provided with a permeation port, the lower end of the permeation port is connected with a first pipeline extending downwards, the end part of the first pipeline is connected with a horizontal second pipeline, and the second pipeline is connected with an outlet formed in the side surface of the connecting seat; the upper surface of the rock core seat is provided with a plurality of permeable grooves which are all connected with the permeation ports; and the plurality of water permeating grooves are distributed on the upper surface of the seat body in a divergent way by taking the permeating port as the center.
The invention has the beneficial effects that: the simulation cabin body structure in this scheme is arranged in the fidelity corer, and specific process is: the core extractor fidelity drills a simulated deep in-situ core, the core extractor sends the in-situ core into a core cabin, the in-situ temperature, the pore pressure and the pressure of the core are monitored in real time through a temperature environment control system, a pore pressure control system and a pressure control system, and the in-situ environment of a stratum is simulated in the deep in-situ fidelity coring high-temperature high-pressure simulation cabin, so that the core is kept in an original' state; under the operation of the driving system, the drilled core is lifted to the ground surface through the multi-section drill rod cabin, and the core is subjected to fidelity displacement to the ground surface to carry out a calibration test.
The core cabin is designed to be small in diameter at the middle part and large in diameter at two ends, and an adjusting space with increased wall thickness is reserved to improve the rigidity and strength of the cabin body, so that the requirements on release of elastic energy of a platform, limitation on working deformation of a corer and rigidity of an ultrahigh pressure container on blasting safety coefficients in a deep in-situ fidelity coring high-temperature and high-pressure simulation process are met.
The top of middle part end cover is the path end, and the bottom is big footpath end, and the middle part outer wall of middle part end cover is for being the many step structure that from top to bottom external diameter increases in proper order, is used for realizing on the one hand that fidelity corer and fidelity are got the accurate butt joint in core simulation test cabin, and another scheme can provide a buffering area for power, prevents effectively that local stress from concentrating to cooperation fidelity corer bores under the simulation test cabin settlement condition and gets the core.
The whole core seat adopts the design that the diameter of the upper part is large and the diameter of the lower part is small, so that the diameter change is realized structurally, and the structure is compact. The connecting seat is connected with the piston end of the loading oil cylinder through the slot, and the connecting seat is connected with the piston end of the loading oil cylinder through a coating structure, so that the stability of transmission is ensured. The rock sample is filled at the upper end of the rock core seat, and the bottom loading oil cylinder drives the rock core seat to apply pressure to the rock sample, so that the detection of the pressure borne by the rock core cabin is realized; set up the dowel hole on the piston end of connecting seat and loading cylinder, insert the downthehole cooperation of dowel through the centering round pin to reach the increase and the bottom between the hydro-cylinder frictional resistance at contact site, make the structure firm, reach when guaranteeing to get the core and prevent changeing the effect. The upper surface of the core seat is designed with a plurality of water seepage grooves which are distributed annularly, so that the pore water pressure at each position of the lower surface of the core is kept at the same level as far as possible in the test process.
The drill rod cabin comprises a first section of drill rod cabin, a second section of drill rod cabin, a third section of drill rod cabin and a fourth section of drill rod cabin which are sequentially connected from bottom to top; the merogenesis design in four sections drilling rod cabins is guaranteeing under the sufficient prerequisite of overall structure intensity, be convenient for realize that the fidelity is got the quick dismantlement of core back, it has the pipeline import to design in fourth section drilling rod cabin middle section, there is the pipeline export in second section drilling rod cabin middle section design, both are through the inside intercommunication in drilling rod cabin, rivers pass through the pipeline, pressure difference provides the power that the drive fidelity corer bored the core on the one hand, on the other hand can wash away and bore the detritus that gets the core in-process and produce and improve experimental security.
Be provided with the clamp device on the outer wall of the junction of loading cylinder body terminal surface and second connecting portion, be provided with the clamp device on the circumference outer wall of the junction of the big footpath end of middle part end cover and first connecting portion, the clamp device includes the clamp body that a pair of mirror image set up, realize in other words to open flange joint, quick dismantlement and quick reassembly after the experiment have been realized under the prerequisite that the cabin body overall structure is firm after guaranteeing to connect, and do special chamfer design at joint gap, the direct deformation of contact site that can avoid the pressurization to lead to as far as possible.
Drawings
FIG. 1 is a schematic structural diagram of a high-temperature high-pressure environment simulation cabin body structure for operation of a fidelity coring device.
Fig. 2 is a schematic view of the structure of the core module.
Fig. 3 is a schematic structural diagram of the loading cylinder.
Fig. 4 is a schematic view of the core print.
Fig. 5 is a schematic structural view of a middle end cap.
FIG. 6 is a schematic diagram of a rock sample compact.
Fig. 7 is a schematic structural view of the drill rod compartment.
Fig. 8 is a schematic view of the structure of the clip device.
Wherein, 1, a core cabin; 101. a reinforcing ring; 102. a first connection portion; 103. a second connecting portion; 104. A circular mounting groove; 105. a second limit groove; 106. a third limiting groove; 2. loading an oil cylinder; 201. a first seal ring mounting ring groove; 202. a first connecting projection; 203. a first limit groove; 3. a core print; 301. a connecting seat; 302. a slot; 303. a positioning column; 304. a pin hole; 305. a penetration opening; 306. a first conduit; 307. a second conduit; 308. an outlet; 309. a water seepage groove; 4. a middle end cap; 401. a circular ring groove; 402. a fourth limit groove; 5. pressing the rock sample; 501. a mounting ring; 502. a second seal ring mounting ring groove; 6. a drill rod compartment; 601. a first section of drill pipe compartment; 602. a second section of drill rod compartment; 603. a third section of drill pipe compartment; 604. a fourth section of drill pipe compartment; 605. a pipeline inlet; 606. a pipeline outlet; 7. an upper end cover; 8. a clamp device; 801. a clamp body; 802. an annular groove.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 to 8, the invention provides a high-temperature and high-pressure environment simulation cabin body structure for operation of a fidelity coring device, which comprises a core cabin 1 in a hollow cylindrical structure, wherein the outer diameters of two ends of the core cabin 1 are larger than that of the middle part of the core cabin, and a plurality of reinforcing circular rings 101 are convexly arranged on the circumferential outer wall of the middle part of the core cabin 1 along the axial direction of the core cabin. The core cabin 1 is designed to be small in diameter at the middle part and large in diameter at two ends, and an adjusting space with increased wall thickness is reserved to improve the rigidity and strength of the cabin body, so that the requirements of releasing elastic energy of a platform, limiting working deformation of a corer and rigidity of an ultrahigh pressure container on blasting safety coefficients in a deep in-situ fidelity coring high-temperature and high-pressure simulation process are met.
The bottom of the core cabin 1 is provided with a loading oil cylinder 2, the end face of the cylinder body of the loading oil cylinder 2 is hermetically connected with the bottom of the core cabin 1, a core seat 3 is arranged on the piston end of the loading oil cylinder 2, and the core seat 3 is positioned inside the core cabin 1.
As a specific embodiment of the core holder 3, a connecting seat 301 is provided at a lower end of the core holder 3, a slot 302 which is open downward is provided at a lower end of the connecting seat 301, and the slot 302 is used for connecting with a piston end of the loading cylinder 2; the bottom of the slot 302 is provided with a positioning column 303 extending downwards; the side surface of the slot 302 is provided with a plurality of pin holes 304 for fixing;
the upper end of the core holder 3 is provided with a permeation port 305, the lower end of the permeation port 305 is connected with a first pipeline 306 extending downwards, the end part of the first pipeline 306 is connected with a horizontal second pipeline 307, and the second pipeline 307 is connected with an outlet 308 formed in the side surface of the connecting seat 301; the upper surface of the core holder 3 is provided with a plurality of permeable grooves 309, and the plurality of permeable grooves 309 are all connected with the permeable port 305; and a plurality of permeation grooves 309 are divergently distributed on the upper surface of the housing with the permeation port 305 as a center.
The whole rock core seat 3 adopts the design that the diameter of the upper part is large and the diameter of the lower part is small, and the diameter change is realized structurally, so that the structure is compact. The connecting base 301 is connected with the piston end of the loading oil cylinder 2 by a slot 302, and is connected with the piston end of the loading oil cylinder 2 by a coating structure, so that the stability of transmission is ensured. The rock sample is filled at the upper end of the rock core seat 3, the bottom loading oil cylinder 2 drives the rock core seat 3 to apply pressure to the rock sample, and the detection that the rock core cabin 1 can bear the pressure is realized; set up pin hole 304 on connecting seat 301 and loading cylinder 2's piston end, insert pin hole 304 fit in through the centering round pin to reach the increase and the bottom between the hydro-cylinder friction resistance at contact position, make the structure firm, reach when guaranteeing to get the core and prevent the effect of changeing. The upper surface of the core holder 3 is designed with a number of permeable grooves 309 in annular subsection so that the pore pressure of the lower surface of the rock sample is kept balanced with other surfaces during the test.
The top of the core cabin 1 is provided with a middle end cover 4, the top of the middle end cover 4 is a small-diameter end, and the bottom of the middle end cover 4 is a large-diameter end; the middle part outer wall of middle part end cover 4 is for being the many step structure that from top to bottom external diameter increases in proper order, is used for realizing on the one hand that the fidelity coring device is got the accurate butt joint in core simulation test cabin with the fidelity, and another scheme can provide a buffering area for power, prevents effectively that local stress from concentrating to the cooperation fidelity coring device is bored under the simulation test cabin settlement condition and is got the core.
The end face of the large-diameter end of the middle end cover 4 is hermetically connected with the end face of the top of the core cabin 1, and a rock sample pressing block 5 is arranged in the top of the core cabin 1; the top of the small-diameter end of the middle end cover 4 is provided with a drill rod cabin 6 which is of a multi-section structure in a sealing mode, an upper end cover 7 is arranged at the opening at the top of the drill rod cabin 6, and the upper end cover 7 is provided with a plurality of liquid injection channels communicated with the rock core cabin 1.
The drill rod cabin 6 comprises a first section of drill rod cabin 601, a second section of drill rod cabin 602, a third section of drill rod cabin 603 and a fourth section of drill rod cabin 604 which are connected in sequence from bottom to top; the bottom end of the first section of the drill rod cabin 601 is connected with the small-diameter end of the middle end cover 4, and the upper end cover 7 is connected with the top of the fourth section of the drill rod cabin 604; the middle part of the second section of the drill rod cabin 602 is provided with a pipeline inlet 605, the middle part of the fourth section of the drill rod cabin 604 is provided with a pipeline outlet 606, and the pipeline inlet 605 and the pipeline outlet 606 are communicated through the inner cavities of the second section of the drill rod cabin 602 and the fourth section of the drill rod cabin 604.
The drill rod cabin 6 comprises a first section of drill rod cabin 601, a second section of drill rod cabin 602, a third section of drill rod cabin 603 and a fourth section of drill rod cabin 604 which are connected in sequence from bottom to top; the design of the subsection of the four-section drill rod cabin 6 is under the premise that the strength of the whole structure is enough, the quick disassembly after the fidelity coring is convenient to realize, a pipeline inlet 605 is designed in the middle section of the fourth-section drill rod cabin 604, a pipeline outlet 606 is designed in the middle section of the second-section drill rod cabin 602, the two are communicated with the inside of the drill rod cabin 6, water flows pass through a pipeline, on one hand, the upper and lower pressure difference can be controlled to provide power for driving the fidelity coring device to drill the rock core, and on the other hand, the rock debris generated in the process of drilling the rock core can be washed away to improve the safety of the test.
The outer walls of two ends of the core cabin 1 are respectively provided with a first connecting part 102 and a second connecting part 103 which are in cylindrical structures in a protruding mode, and the outer diameters of the first connecting part 102 and the second connecting part 103 are larger than the outer diameter of the middle of the core cabin 1; a space is arranged between the upper end face of the first connecting part 102 and the upper end face of the core cabin 1; the lower end face of the second connecting portion 103 is flush with the lower end face of the core compartment 1, and a circular mounting groove 104 is provided on the lower end face of the second connecting portion 103.
The end face of the cylinder body of the loading cylinder 2 is of a step structure, a plurality of first sealing ring mounting ring 501 grooves 201 are formed in the outer wall of the circumference of the cylinder body of the loading cylinder 2, the end face of the cylinder body of the loading cylinder 2 is arranged in the circular mounting groove 104, and a first connecting bulge 202 with the same diameter as the outer diameter of the second connecting portion 103 is formed in the outer wall of the circumference of the cylinder body of the loading cylinder 2.
An O-shaped fluororubber sealing ring is arranged in the first sealing ring mounting ring groove 201, so that the cylinder body end surface of the loading cylinder 2 is hermetically connected with the second connecting part 103.
Be provided with clamp device 8 on the outer wall of the junction of 2 cylinder body terminal surfaces of load cylinder and second connecting portion 103, clamp device 8 includes the clamp body 801 that a pair of mirror image set up, the cross section of two clamp bodies 801 is semicircle ring structure, all be provided with the relative annular groove 802 that sets up of opening on the circumference inner wall of two clamp bodies 801, form hollow cylinder structure after the lateral wall of the straight face department of two clamp bodies 801 is connected, second connecting portion 103 and the protruding 202 block of first connection are in annular groove 802.
A mounting ring 501 is convexly arranged on the circumferential outer wall of the top of the rock sample pressing block 5, and a plurality of second sealing ring mounting ring grooves 502 are arranged on the circumferential outer wall of the mounting ring 501; an O-shaped fluorine rubber sealing ring is arranged in the second sealing ring mounting ring groove 502, so that the top of the rock sample pressing block 5 is hermetically connected with the lower end face of the large-diameter end of the middle end cover 4.
A circular ring groove 401 is formed in the lower end face of the large-diameter end of the middle end cover 4, the mounting ring 501 is arranged in the circular ring groove 401, and the circumferential outer wall of the mounting ring 501 is in contact with the inner wall of the circular ring groove 401; the lower end surface of the mounting ring 501 and the lower end surface of the large-diameter end of the middle end cover 4 are both in contact with the upper end surface of the first connecting part 102; the hoop device 8 is arranged on the circumferential outer wall of the joint of the large-diameter end of the middle end cover 4 and the first connecting portion 102, and the large-diameter end of the middle end cover 4 and the first connecting portion 102 are both arranged in the annular groove 802.
Be provided with clamp device 8 on the outer wall of the junction of 2 cylinder body terminal surfaces of loading cylinder and second connecting portion 103, be provided with clamp device 8 on the circumference outer wall of the big footpath end of middle part end cover 4 and the junction of first connecting portion 102, clamp device 8 includes clamp body 801 that a pair of mirror image set up, realize in other words to open flange joint, quick dismantlement and quick reassembly after the experiment have been realized under the prerequisite that the cabin body overall structure is firm after guaranteeing to connect, and do special chamfer design at joint gap, the direct deformation of contact site that can avoid the pressurization to lead to as far as possible.
A first limit groove 203 is formed in the step surface of the cylinder body of the loading cylinder 2, and a second limit groove 105 matched with the first limit groove 203 is formed in the lower end surface of the second connecting portion 103. When the step surface of the cylinder body of the loading cylinder 2 is in rotating fit connection with the lower end surface of the second connecting portion 103, the positions of the first limiting groove 203 and the second limiting groove 105 are aligned, and then limiting blocks are arranged in the first limiting groove 203 and the second limiting groove 105, so that the rotation freedom degree between the step surface of the cylinder body of the loading cylinder 2 and the lower end surface of the second connecting portion 103 is limited, and the rotation of the step surface of the cylinder body of the loading cylinder 2 and the lower end surface of the second connecting portion 103 is avoided after the connection.
The up end of first connecting portion 102 is provided with third spacing groove 106, the lower terminal surface of the big footpath end of middle part end cover 4 is provided with the fourth spacing groove 402 that matches with third spacing groove 106, when the up end of first connecting portion 102 is connected with the big footpath end of middle part end cover 4, align the position of third spacing groove 106 and fourth spacing groove 402, then set up the stopper in third spacing groove 106 and fourth spacing groove 402, restrict the rotational degree of freedom between the up end of first connecting portion 102 and the big footpath end of middle part end cover 4, avoid both to take place to rotate after connecting.
The simulation cabin body structure in this scheme is arranged in the fidelity corer, and specific process is: monitoring the in-situ temperature, pore pressure and pressure of a rock sample in real time in the core cabin 1 through a temperature environment control system, a pore pressure control system and a pressure control system, and simulating the in-situ environment of a high-temperature high-pressure deep ground in the core cabin 1 to ensure that the core keeps the original' state; under the operation of the driving system, the core is drilled in the rock sample in the core cabin 1 through the multi-section drill rod cabin 6 and lifted to the ground surface, and the drilled core is fidelity-shifted to the ground surface to carry out the rating test.
Claims (9)
1. A high-temperature and high-pressure environment simulation cabin body structure for operation of a fidelity coring device is characterized by comprising a core cabin in a hollow cylindrical structure, wherein the outer diameters of two ends of the core cabin are larger than that of the middle part of the core cabin, and a plurality of reinforcing circular rings are convexly arranged on the circumferential outer wall of the middle part of the core cabin along the axis direction of the circumferential outer wall;
a loading oil cylinder is arranged at the bottom of the core cabin, the end surface of a cylinder body of the loading oil cylinder is hermetically connected with the bottom of the core cabin, a core seat is arranged at the piston end of the loading oil cylinder, and the core seat is positioned inside the core cabin;
the top of the core cabin is provided with a middle end cover, the top of the middle end cover is a small-diameter end, and the bottom of the middle end cover is a large-diameter end; the end face of the large-diameter end of the middle end cover is hermetically connected with the end face of the top of the core cabin, and a rock sample pressing block is arranged in the top of the core cabin;
the top of the small-diameter end of the middle end cover is provided with a drill rod cabin which is of a multi-section structure in a sealing mode, an upper end cover is arranged at the opening of the top of the drill rod cabin, and the upper end cover is provided with a plurality of liquid injection channels communicated with the rock core cabin.
2. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as claimed in claim 1, wherein the outer walls of the two ends of the core cabin are respectively provided with a first connecting part and a second connecting part which are in cylindrical structures in a protruding manner, and the outer diameters of the first connecting part and the second connecting part are larger than the outer diameter of the middle part of the core cabin;
a space is arranged between the upper end face of the first connecting part and the upper end face of the core cabin; the lower end face of the second connecting part is flush with the lower end face of the core cabin, and a circular mounting groove is formed in the lower end face of the second connecting part;
the end face of the cylinder body of the loading oil cylinder is of a step structure, a plurality of first sealing ring mounting ring grooves are formed in the outer wall of the circumference of the cylinder body of the loading oil cylinder, the end face of the cylinder body of the loading oil cylinder is arranged in the circular mounting groove, and first connecting bulges with the same diameter as the outer diameter of the second connecting part are arranged on the outer wall of the circumference of the cylinder body of the loading oil cylinder;
be provided with the clamp device on the outer wall of the junction of loading cylinder body terminal surface and second connecting portion, the clamp device includes the clamp body that a pair of mirror image set up, two the cross section of clamp body is the semicircle ring structure, all is provided with the annular groove that the opening set up relatively on the circumference inner wall of two clamp bodies, forms hollow cylinder structure after the lateral wall of the straight face department of two clamp bodies is connected, and second connecting portion and the protruding block of first connection are in the annular groove.
3. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as defined in claim 2, wherein a first limit groove is formed on the step surface of the cylinder body of the loading cylinder, and a second limit groove matched with the first limit groove is formed on the lower end surface of the second connecting portion.
4. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as claimed in claim 3, wherein a mounting ring is convexly arranged on the circumferential outer wall of the top of the rock sample pressing block, and a plurality of second sealing ring mounting ring grooves are arranged on the circumferential outer wall of the mounting ring; the lower end face of the large-diameter end of the middle end cover is provided with a circular ring groove, the mounting ring is arranged in the circular ring groove, and the circumferential outer wall of the mounting ring is in contact with the inner wall of the circular ring groove;
the lower end face of the mounting ring and the lower end face of the large-diameter end of the middle end cover are both in contact with the upper end face of the first connecting part; the hoop device is arranged on the circumferential outer wall of the joint of the middle end cover large-diameter end and the first connecting portion, and the middle end cover large-diameter end and the first connecting portion are both arranged in the annular groove.
5. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as defined in claim 3, wherein the upper end surface of the first connecting part is provided with a third limiting groove, and the lower end surface of the large-diameter end of the middle end cover is provided with a fourth limiting groove matched with the third limiting groove.
6. The high-temperature high-pressure environment simulation capsule structure for operation of the fidelity coring device of claim 1, wherein the small diameter end of the middle end cap is sealingly connected to the bottom end of the drill rod capsule.
7. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity corer as recited in claim 6, wherein the drill rod cabin comprises a first section of drill rod cabin, a second section of drill rod cabin, a third section of drill rod cabin and a fourth section of drill rod cabin which are connected in sequence from bottom to top; the bottom end of the first section of the drill rod cabin is connected with the small-diameter end of the middle end cover, and the upper end cover is connected with the top of the fourth section of the drill rod cabin;
the middle part of the second section of drill rod cabin is provided with a pipeline inlet, the middle part of the fourth section of drill rod cabin is provided with a pipeline outlet, and the pipeline inlet and the pipeline outlet are communicated through inner cavities of the second section of drill rod cabin and the fourth section of drill rod cabin.
8. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as claimed in claim 1, wherein the middle outer wall of the middle end cover is a multi-step structure with sequentially increasing outer diameters from top to bottom.
9. The high-temperature high-pressure environment simulation cabin structure for the operation of the fidelity coring device as defined in claim 1, wherein the lower end of the core holder is provided with a connecting seat, the lower end of the connecting seat is provided with a slot which is opened downwards and is used for being connected with the piston end of the loading oil cylinder; the bottom of the slot is provided with a positioning column extending downwards; the side surface of the slot is provided with a plurality of pin holes for fixing;
the upper end of the rock core seat is provided with a permeation port, the lower end of the permeation port is connected with a first pipeline extending downwards, the end part of the first pipeline is connected with a horizontal second pipeline, and the second pipeline is connected with an outlet formed in the side face of the connecting seat; the upper surface of the rock core seat is provided with a plurality of permeable grooves which are all connected with the permeation ports; and the plurality of water permeating grooves are distributed on the upper surface of the seat body in a divergent way by taking the permeating port as the center.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458202A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Core cabin clamp for deep in-situ fidelity core taking calibration platform |
| CN114458204A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Control system for operation of fidelity corer |
| CN114458203A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Deep normal position fidelity is got core and is rateed platform assembly system |
| CN114458205A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Assembly method of deep in-situ fidelity coring calibration platform |
| CN114813143A (en) * | 2022-05-09 | 2022-07-29 | 中国航发沈阳发动机研究所 | Inner cone with front and rear sections |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510944A (en) * | 2012-06-28 | 2014-01-15 | 中国石油化工股份有限公司 | High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method |
| CN107228815A (en) * | 2017-05-16 | 2017-10-03 | 绍兴文理学院 | A kind of three axle rock mass permeability tests multi-function terminal cap system |
| CN108952671A (en) * | 2017-05-17 | 2018-12-07 | 中国石油化工股份有限公司 | Indoor drilling simulator and evaluation method under a kind of multifactor environment |
| CN109113610A (en) * | 2018-08-13 | 2019-01-01 | 四川大学 | Core fidelity cabin |
| CN109356543A (en) * | 2018-12-06 | 2019-02-19 | 深圳大学 | Deep rock actively keeps the temperature coring device and its heat preservation coring method in situ |
| CN111734332A (en) * | 2020-07-29 | 2020-10-02 | 四川大学 | Film-forming while drilling simulation device and film-forming while drilling coring method |
| CN113356778A (en) * | 2021-06-03 | 2021-09-07 | 中国船舶科学研究中心 | Ultrahigh-pressure high-temperature rock core sample transfer system and working process thereof |
-
2021
- 2021-09-30 CN CN202111164928.XA patent/CN113969757B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510944A (en) * | 2012-06-28 | 2014-01-15 | 中国石油化工股份有限公司 | High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method |
| CN107228815A (en) * | 2017-05-16 | 2017-10-03 | 绍兴文理学院 | A kind of three axle rock mass permeability tests multi-function terminal cap system |
| CN108952671A (en) * | 2017-05-17 | 2018-12-07 | 中国石油化工股份有限公司 | Indoor drilling simulator and evaluation method under a kind of multifactor environment |
| CN109113610A (en) * | 2018-08-13 | 2019-01-01 | 四川大学 | Core fidelity cabin |
| CN109356543A (en) * | 2018-12-06 | 2019-02-19 | 深圳大学 | Deep rock actively keeps the temperature coring device and its heat preservation coring method in situ |
| CN111734332A (en) * | 2020-07-29 | 2020-10-02 | 四川大学 | Film-forming while drilling simulation device and film-forming while drilling coring method |
| CN113356778A (en) * | 2021-06-03 | 2021-09-07 | 中国船舶科学研究中心 | Ultrahigh-pressure high-temperature rock core sample transfer system and working process thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458202A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Core cabin clamp for deep in-situ fidelity core taking calibration platform |
| CN114458204A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Control system for operation of fidelity corer |
| CN114458203A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Deep normal position fidelity is got core and is rateed platform assembly system |
| CN114458205A (en) * | 2022-01-26 | 2022-05-10 | 四川大学 | Assembly method of deep in-situ fidelity coring calibration platform |
| CN114458205B (en) * | 2022-01-26 | 2022-10-14 | 四川大学 | Assembly method of deep in-situ fidelity coring calibration platform |
| CN114458203B (en) * | 2022-01-26 | 2023-02-28 | 四川大学 | Deep in-situ fidelity coring calibration platform assembly system |
| CN114813143A (en) * | 2022-05-09 | 2022-07-29 | 中国航发沈阳发动机研究所 | Inner cone with front and rear sections |
| CN114813143B (en) * | 2022-05-09 | 2023-08-04 | 中国航发沈阳发动机研究所 | Front-back segmented inner cone |
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| CN113969757B (en) | 2022-07-29 |
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