CN114000844A - Bottom sealing mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device - Google Patents
Bottom sealing mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device Download PDFInfo
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- CN114000844A CN114000844A CN202111159461.XA CN202111159461A CN114000844A CN 114000844 A CN114000844 A CN 114000844A CN 202111159461 A CN202111159461 A CN 202111159461A CN 114000844 A CN114000844 A CN 114000844A
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 238000005553 drilling Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 105
- 239000011435 rock Substances 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000000275 quality assurance Methods 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 12
- 239000000243 solution Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 7
- 238000011160 research Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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Classifications
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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
- E21B25/08—Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
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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
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a bottom sealing mechanism of an in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device, which comprises a coring barrel and a central rod, wherein the central rod is arranged in the coring barrel in a sealing and telescopic manner, the bottom of a sampling cavity is provided with a bottom sealer, the central rod and the coring barrel are enclosed to form a sampling cavity for containing a rock sample, the bottom sealer is of an elastic petal-shaped structure and is made of an elastic material, the end part of each petal is fixed on the inner wall of the coring barrel, and the rest end surfaces are mutually abutted to seal the bottom of the coring barrel. The method reduces the film forming liquid leakage in the process that the core enters the core barrel during coring, realizes the sealing of the bottom of the core barrel after coring and prevents the film forming liquid from leaking in large quantity.
Description
Technical Field
The invention relates to the technical field of scientific drilling of rocks, in particular to a bottom sealing mechanism of an in-situ self-triggering film-forming quality-guaranteeing coring device while drilling.
Background
During the process of coring and taking out the core from a drilling rock stratum, the core is polluted by bottom-hole formation water or drilling fluid and the like, so that the in-situ quality, the oil-gas content, the humidity and the like of the core are influenced, and after the core is taken out, the change of the living environment of microorganisms is caused due to the influence of air, illumination and the like, so that the scientific research is influenced; meanwhile, the loss of oil and gas resources in the core can cause resource evaluation distortion, and therefore, the quality guarantee of deep rock drilling coring basically adopts a closed coring technology to realize in-situ quality guarantee coring, namely, a polymer-based closed liquid is adopted to form a liquid film on the surface of the core, so that the dip dyeing of the drilling fluid on the core is reduced.
A great deal of research is carried out in the technical field of rock drilling by the closed coring technology, but the prior rock coring technology cannot realize complete quality-guaranteeing coring, and the reason is that in the traditional closed coring technology, a coring barrel is completely filled with closed liquid, a closed piston at the lower part of the coring barrel is fixed by a pin, and in the process of drilling and coring, due to the action of drilling pressure, the pin is sheared, the closed liquid is extruded out to form a protection zone at the bottom of a well to prevent a rock core from being polluted by drilling fluid, so that a liquid film is generated by closed coring, and the loss of components in the rock core cannot be guaranteed; therefore, based on the in-situ self-triggering quality-guaranteeing coring method while drilling, a bottom sealing mechanism of the in-situ self-triggering quality-guaranteeing coring device while drilling is needed, which can form a solid sealing film on the surface of a core while drilling, seal and store original component information in the core in real time, reduce the loss of film forming liquid during the process that the core enters a coring barrel during coring, seal the bottom of the coring barrel after coring and prevent a great amount of film forming liquid from leaking.
Disclosure of Invention
The invention aims to provide a bottom sealing mechanism of an in-situ self-triggering film-forming quality-guaranteeing coring device while drilling, which reduces the loss of film-forming liquid in the process that a core enters a coring barrel during coring, seals the bottom of the coring barrel after coring, prevents a large amount of leakage of the film-forming liquid, is matched with other quality-guaranteeing coring structures, and completely and uniformly covers the surface of the core in the dynamic process of the coring while drilling, and forms a layer of solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing action, thereby protecting the core from being polluted by drilling liquid, preventing the loss of substances in the core, enabling the core to truly reflect the in-situ stratum state, providing guidance for deep resource exploration and development operation, and laying the foundation for deep rock science and deep biology exploration and research.
The embodiment of the invention is realized by the following steps:
the bottom sealing mechanism of the in-situ self-triggering film-forming quality-guaranteeing coring device comprises a coring barrel and a center rod, wherein the center rod is arranged in the coring barrel in a sealing and telescopic manner, a bottom sealer is arranged at the bottom of the sampling cavity, the bottom sealer, the center rod and the coring barrel are enclosed to form a sampling cavity for containing a rock sample, the bottom sealer is of an elastic petal-shaped structure and is made of an elastic material, the end part of each petal is fixed on the inner wall of the coring barrel, and other end faces are mutually abutted to seal the bottom of the coring barrel. The method reduces the film forming liquid leakage in the process that the core enters the core barrel during coring, realizes the sealing of the bottom of the core barrel after coring, prevents the film forming liquid from leaking in large quantity, is matched with other quality-guaranteeing coring structures, completely and uniformly covers the surface of the core during the dynamic process of coring while drilling, forms a layer of solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing, protects the core from being polluted by the drilling liquid, prevents the loss of substances in the core, enables the core to truly reflect the in-situ stratum state, provides guidance for the exploration and development operation of deep resources, and lays a foundation for the research and study of deep rock science and deep biology.
Preferably, the bottom sealer comprises a plurality of sealing flaps and a sealing ring, the sealing ring is fixed on the inner wall of the core barrel, one end of each sealing flap is fixed on the sealing ring, and the other end of each sealing flap is abutted against each other to seal the bottom of the core barrel.
Preferably, the sealing flap is obliquely arranged on the sealing ring, and the sealing flaps form a recessed structure which is arranged on one side far away from the sampling cavity.
Preferably, the inner ring of the sealing ring is arranged to be a polygonal structure, the sealing flaps are arranged to be a triangular structure, and the plurality of sealing flaps form a hollow polygonal column structure.
Preferably, the inner ring of the sealing ring is of a circular structure, the sealing flaps are of circular arc-shaped structures, and the plurality of sealing flaps form a hollow hemispherical structure.
Preferably, a plurality of sealing petals are all arranged on the same plane, the sealing petals are arranged in a fan-shaped structure, and the plurality of sealing petals form a circular structure.
Preferably, a plurality of sealing rings are included, and adjacent sealing flaps are arranged in a staggered manner.
Preferably, a compression part is fixed on the central rod and is in sliding and sealing connection with the inner wall of the core barrel, so that the central rod, the core barrel and the compression part are enclosed to form an extrusion cavity, a liquid storage coil A and a liquid storage coil B which are used for storing liquid A and liquid B are arranged in the extrusion cavity respectively, a film forming liquid releasing mechanism and a mixing coil are further arranged on the core barrel, the film forming liquid releasing mechanism comprises a regulating cavity communicated with the mixing coil, the liquid storage coil A and the liquid storage coil B are further communicated with the other end of the regulating cavity, and a spring movable assembly used for controlling the on-off of the regulating cavity is arranged in the regulating cavity; and the mixing coil is used for mixing the liquid A and the liquid B to form mixed film-forming liquid and outputting the film-forming liquid to the outer surface of the rock sample.
Preferably, the spring movable assembly comprises a blocking screw, a spring and a floating piston which are arranged in the adjusting cavity, one end of the adjusting cavity is provided with a liquid inlet communicated with the liquid storage coil A and/or the liquid storage coil B, a liquid outlet communicated with the mixing coil is arranged on the side wall of the adjusting cavity, and the floating piston is used for controlling the on-off between the liquid inlet and the liquid outlet.
Preferably, a core claw for fixing rock is further arranged in the sampling cavity of the core barrel, and the core claw is arranged on the inner wall of the core barrel in a surrounding manner.
Preferably, the central rod is provided with a retraction elastic clamp, and the retraction elastic clamp is used for locking the central rod and the coring barrel.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the bottom sealing mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device comprises a coring barrel and a central rod, wherein the central rod is arranged in the coring barrel in a sealing and telescopic manner, a bottom sealer is arranged at the bottom of the sampling cavity, the bottom sealer, the central rod and the coring barrel are enclosed to form a sampling cavity for containing a rock sample, the bottom sealer is of an elastic petal-shaped structure and is made of an elastic material, the end part of each petal is fixed on the inner wall of the coring barrel, and the rest end surfaces of the petals are mutually abutted to seal the bottom of the coring barrel. The method reduces the film forming liquid leakage in the process that the core enters the core barrel during coring, realizes the sealing of the bottom of the core barrel after coring, prevents the film forming liquid from leaking in large quantity, is matched with other quality-guaranteeing coring structures, completely and uniformly covers the surface of the core during the dynamic process of coring while drilling, forms a layer of solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing, protects the core from being polluted by the drilling liquid, prevents the loss of substances in the core, enables the core to truly reflect the in-situ stratum state, provides guidance for the exploration and development operation of deep resources, and lays a foundation for the research and study of deep rock science and deep biology.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1 of the present invention;
FIG. 3 is an enlarged view of portion B of FIG. 1 of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 6 is a block diagram of the overall structural coring state of the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 6 of the present invention;
FIG. 8 is an enlarged view of portion B of FIG. 6 of the present invention;
FIG. 9 is a cored structural view of the overall structure of the present invention;
FIG. 10 is an enlarged view of portion B of FIG. 9 of the present invention;
FIG. 11 is a front core configuration view of the first configuration of the bottom sealer of the present invention;
FIG. 12 is a view of the bottom sealer of the present invention in a first configuration for coring;
FIG. 13 is a front core view of a second configuration of the bottom sealer of the present invention;
FIG. 14 is a view of the bottom sealer of the present invention in a second configuration for coring;
FIG. 15 is a front core view of a third configuration of the bottom sealer of the present invention;
FIG. 16 is a coring configuration view of a third configuration of the bottom sealer of the present invention;
FIG. 17 is a schematic view of a third configuration of the bottom seal of the present invention;
FIG. 18 is a top view of a third configuration of the bottom seal of the present invention.
Description of specific element symbols: 1. a center pole; 2. sealing the flap; 3. a seal ring; 4. a release mechanism for the deposition solution; 5. a liquid storage coil pipe A; 6. a liquid storage coil pipe B; 7. a first infusion tube; 8. a core barrel; 9. a mixing coil; 10. snapping; 11. a core claw; 12. a core; 13. a bottom sealer; 14. a recessed structure; 15. a compression section; 41. plugging screws; 42. a spring; 43. a floating piston; 91. a static mixer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1 to 18, the bottom sealing mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device of the present embodiment includes a coring barrel 8 and a central rod 1, the central rod 1 is telescopically and hermetically disposed in the coring barrel 8, a bottom sealer 13 is disposed at the bottom of the sampling cavity, the bottom sealer 13, the central rod 1 and the coring barrel 8 enclose a sampling cavity for accommodating a rock sample, the bottom sealer 13 is in an elastic petal-shaped structure and made of an elastic material, an end of each petal is fixed on an inner wall of the coring barrel 8, and other end faces abut against each other to seal the bottom of the coring barrel 8. The method has the advantages that the loss of film forming liquid in the process that the core 12 enters the core barrel 8 during coring is reduced, the bottom of the core barrel 8 is sealed after coring is realized, the film forming liquid is prevented from being leaked in a large amount, and in the dynamic process of coring while drilling by matching with other quality-guaranteeing coring structures, a layer of solid quality-guaranteeing sealing film with high barrier property is covered on the surface of the core 12, so that the core 12 is protected from being polluted by drilling liquid, the loss of substances in the core 12 is prevented, the in-situ stratum state of the core 12 can be truly reflected, guidance is provided for deep resource exploration and development operation, and a foundation is laid for deep rock science and deep biology exploration research.
Example 2: the bottom sealer 13 of this embodiment includes a plurality of sealing flaps 2 and sealing rings 3, and sealing rings 3 are fixed on the inner wall of a core barrel 8, and sealing flaps 2 one end is fixed on sealing rings 3, and the other end supports each other and holds and seals the bottom of the core barrel 8. The sealing flap 2 of the present embodiment is arranged obliquely on the sealing ring 3, the plurality of sealing flaps 2 forming a recess structure 14, the recess structure 14 being arranged at a side remote from the sampling cavity. The inner ring of the sealing ring 3 of the embodiment is arranged to be a polygonal structure, the sealing flaps 2 are arranged to be a triangular structure, and the plurality of sealing flaps 2 form a hollow polygonal column structure. The inner ring of the sealing ring 3 of the embodiment is set to be a circular structure, the sealing petals 2 are arc-shaped structures, and the plurality of sealing petals 2 form a hollow hemispherical structure. The sealing petals 2 of the present embodiment are all disposed on the same plane, the sealing petals 2 are disposed in a fan-shaped structure, and the sealing petals 2 form a circular structure. The sealing ring comprises a plurality of layers of sealing rings 3, and adjacent sealing flaps 2 are arranged in a staggered manner; the openings are arranged in a staggered mode so as to reduce the drainage area during coring. The bottom sealer 13 is 4-16 sheets combined to form a closed structure and is arranged at the bottom of the core 12 barrel. Taking the front flap to be closed; during coring, the core 12 extrudes the petals to enter the coring barrel 8, the petals are tightly attached to the surface of the core 12 to cover the gap between the core 12 and the coring barrel 8 and prevent the leakage of the film forming liquid; after coring, the elastic flaps are closed again, so that a great amount of film forming liquid can not flow out, and the bottom of the core 12 barrel can be thoroughly sealed after the film forming liquid is crosslinked and cured.
Example 3: in the embodiment, a compression part 15 is fixed on a central rod 1, the compression part 15 is connected with the inner wall of a core barrel 8 in a sliding and sealing manner, and further the central rod 1, the core barrel 8 and the compression part 15 enclose to form an extrusion cavity, a liquid storage coil A and a liquid storage coil B which are used for storing liquid A and liquid B are arranged in the extrusion cavity respectively, a film forming liquid releasing mechanism 4 and a mixing coil 9 are further arranged on the core barrel 8, the film forming liquid releasing mechanism 4 comprises a regulating cavity communicated with the mixing coil 9, the other end of the regulating cavity is also communicated with the liquid storage coil A and the liquid storage coil B, and a spring 42 movable assembly for controlling the on-off of the regulating cavity is arranged in the regulating cavity; the mixing coil 9 is used for mixing the liquid A and the liquid B to form mixed film-forming liquid and outputting the film-forming liquid to the outer surface of the rock sample.
Example 4: the spring 42 movable assembly of this embodiment is including setting up shutoff screw 41, spring 42 and the floating piston 43 in adjusting the intracavity, and the one end of adjusting the chamber is provided with the inlet that communicates with stock solution coil A and/or stock solution coil B, is provided with the liquid outlet that communicates mixing coil 9 on adjusting the lateral wall in chamber, and floating piston 43 is used for controlling the break-make between inlet and the liquid outlet. The core gripper 11 that is used for fixed rock is still provided with in the sample chamber of the coring barrel 8 of this embodiment, and core gripper 11 encircles the inner wall that sets up at coring barrel 8. The central rod 1 of the present embodiment is provided with a retractable elastic clip 10, and the retractable elastic clip 10 is used for locking the central rod 1 and the coring barrel 8.
Example 5: the mixing coil 9 of this embodiment is disposed around the top of the static mixer 91, and the inner annular wall of the mixing coil 9 is provided with a plurality of fluid-feeding holes for feeding deposition solution. The mixing coil 9 of this embodiment is disposed around the bottom of the static mixer 91, and the bottom of the mixing coil 9 is provided with a plurality of infusion holes for outputting deposition solution. The deposition solution releasing mechanism 4 of this embodiment comprises a liquid storage coil A5 and a liquid storage coil B6, wherein a first liquid transport tube 7 is respectively arranged to communicate with the liquid storage coil A5 and the liquid storage coil B6, and the other end of the static mixer 91 is provided with a three-way connector 14 for connecting two different first liquid transport tubes 7.
Example 6: the deposition-solution releasing mechanism 4 of this example was placed above the extrusion chamber, the bottom of liquid storage coil A5 and liquid storage coil B6 had no openings, the top had openings communicating with the deposition-solution releasing mechanism 4, and the mixing coil 9 was placed at the bottom of the compression section 15 and fixed to the coring barrel 8. The film forming single liquid comprises A and B, if more than two film forming single liquids are needed, more liquid storage coils are needed, and the number of the film forming single liquid and the number of the liquid storage coils are not limited to two; before coring: the film-forming solutions A/B were stored in a liquid storage coil A5 and a liquid storage coil B6, respectively. The spring 42 pushes the floating piston 43 to block the film forming A/B liquid outlet, preventing the film forming A/B liquid from leaking before coring. When coring: the central rod 1 is static, the film forming solution releasing mechanism 4 and the coring barrel 8 move downwards, and the core 12 enters the coring barrel 8 through the bottom sealer 13 while drilling. The central rod 1, the film-forming solution releasing mechanism 4 and the coring barrel 8 move relatively to reduce the liquid storage space, and axial compression force is applied to the liquid storage coil A5 and the liquid storage coil B6 to deform the liquid storage coils and discharge the film-forming solution A/B respectively. The film-forming A/B liquid presses the floating piston 43 and the spring 42 to make the liquid outlet leak. The film-forming A/B liquid flows downwards through the infusion tube, is collected in the mixing coil 9, and is fully mixed by a static mixer 91 arranged in the bottom of the mixing coil 9 to form a film-forming liquid with curing capability. The film-forming liquid flows out through the liquid outlet hole on the inner side of the upper part of the mixing coil pipe 9 and covers the surface of the newly drilled core 12. The film is formed, the cross-linking and curing reaction is rapidly carried out, and a layer of solid quality-guaranteeing sealing film is formed on the surface of the core 12. After coring: after the core is advanced, the elastic clamp 10 is ejected, so that the relative position between the central rod 1 and the core barrel 8 is fixed. And (3) lifting the drilling tool, closing the bottom sealer 13 again after the core claw 11 holds the core 12 tightly, and preventing a great amount of film forming liquid from leaking from the bottom of the coring barrel 8. The film-forming liquid is subjected to cross-linking and curing reaction in the annular space between the core 12 and the coring barrel 8 and in the space at the top and bottom of the core 12 to form a solid quality-guaranteeing sealing film.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The bottom sealing mechanism of the in-situ self-triggering film-forming-while-drilling quality-guaranteeing coring device is characterized by comprising a coring barrel and a central rod, wherein the central rod is arranged in the coring barrel in a sealing and telescopic manner, a bottom sealer is arranged at the bottom of the sampling cavity, the bottom sealer, the central rod and the coring barrel enclose to form a sampling cavity for containing a rock sample, the bottom sealer is of an elastic petal-shaped structure and is made of an elastic material, the end part of each petal is fixed on the inner wall of the coring barrel, and the rest end surfaces of the petals are mutually abutted to seal the bottom of the coring barrel.
2. The in-situ self-triggering film-forming while drilling quality-guaranteeing coring device bottom sealing mechanism of claim 1, wherein the bottom sealer comprises a plurality of sealing flaps and a sealing ring, the sealing ring is fixed on the inner wall of the coring barrel, one end of each sealing flap is fixed on the sealing ring, and the other end of each sealing flap abuts against each other to seal the bottom of the coring barrel.
3. The bottom sealing mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device of claim 2, wherein the sealing flap is obliquely disposed on the sealing ring, and a plurality of sealing flaps form a recessed structure disposed on a side away from the sampling cavity.
4. The bottom sealing mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device of claim 3, wherein the inner ring of the sealing ring is arranged in a polygonal structure, the sealing flaps are arranged in a triangular structure, and the plurality of sealing flaps form a hollow polygonal column structure.
5. The bottom sealing mechanism of the in-situ self-triggering film-forming while drilling quality-guaranteeing coring device of claim 3, wherein the inner ring of the sealing ring is configured to be a circular structure, the sealing flaps are arc-shaped structures, and a plurality of sealing flaps form a hollow hemispherical structure.
6. The in situ self-triggering film-forming while drilling quality assurance coring device bottom sealing mechanism of claim 2, wherein the plurality of sealing flaps are all disposed on the same plane, the sealing flaps are disposed in a fan-shaped configuration, and the plurality of sealing flaps form a circular configuration.
7. The bottom sealing mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device of claim 6, comprising a plurality of sealing rings, wherein adjacent sealing flaps are arranged in a staggered manner.
8. The bottom sealing mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device according to claim 1, wherein a compression part is fixed on the central rod, the compression part is connected with the inner wall of the coring barrel in a sliding and sealing manner, the central rod, the coring barrel and the compression part enclose a squeezing cavity, a liquid storage coil A and a liquid storage coil B which are used for storing liquid A and liquid B are arranged in the squeezing cavity, a film-forming liquid releasing mechanism and a mixing coil are further arranged on the coring barrel, the film-forming liquid releasing mechanism comprises a regulating cavity communicated with the mixing coil, the liquid storage coil A and the liquid storage coil B are further communicated with the other end of the regulating cavity, and a spring movable assembly used for controlling the on-off of the regulating cavity is arranged in the regulating cavity; and the mixing coil is used for mixing the liquid A and the liquid B to form mixed film-forming liquid and outputting the film-forming liquid to the outer surface of the rock sample.
9. The bottom sealing mechanism of the in-situ self-triggering film-forming while drilling quality-guaranteeing coring device according to claim 8, wherein the spring movable assembly comprises a plugging screw, a spring and a floating piston which are arranged in an adjusting cavity, one end of the adjusting cavity is provided with a liquid inlet communicated with the liquid storage coil A and/or the liquid storage coil B, the side wall of the adjusting cavity is provided with a liquid outlet communicated with the mixing coil, and the floating piston is used for controlling the connection and disconnection between the liquid inlet and the liquid outlet.
10. The in-situ self-triggering film-forming while drilling quality-guaranteeing coring device as claimed in claim 1, wherein a core claw for fixing rock is further disposed in the sampling cavity of the coring barrel, and the core claw is circumferentially disposed on an inner wall of the coring barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111159461.XA CN114000844B (en) | 2021-09-30 | 2021-09-30 | Bottom sealing mechanism of in-situ self-triggering film-forming-while-drilling quality-guaranteeing coring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111159461.XA CN114000844B (en) | 2021-09-30 | 2021-09-30 | Bottom sealing mechanism of in-situ self-triggering film-forming-while-drilling quality-guaranteeing coring device |
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| CN114000844A true CN114000844A (en) | 2022-02-01 |
| CN114000844B CN114000844B (en) | 2022-10-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162987A (en) * | 2022-07-15 | 2022-10-11 | 平顶山天安煤业股份有限公司 | Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4258803A (en) * | 1978-06-21 | 1981-03-31 | American Coldset Corporation | Core barrel for obtaining and retrieving subterranean formation samples |
| CN109403900A (en) * | 2018-12-06 | 2019-03-01 | 深圳大学 | Deep rock is guaranteed the quality coring device and its coring method |
| 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 |
| CN111764854A (en) * | 2020-07-29 | 2020-10-13 | 四川大学 | Deep rock in-situ quality-guaranteeing coring device and film-forming coring method thereof while drilling |
| CN211900529U (en) * | 2019-11-28 | 2020-11-10 | 中国地质科学院勘探技术研究所 | Core drop prevention type coring drilling tool |
| CN111999099A (en) * | 2020-08-07 | 2020-11-27 | 深圳大学 | Moon-based fidelity coring device and in-situ self-healing sealing method |
| CN213016259U (en) * | 2020-08-27 | 2021-04-20 | 中国地质科学院勘探技术研究所 | Multi-flap type turnover plate core clamping mechanism capable of being closed |
-
2021
- 2021-09-30 CN CN202111159461.XA patent/CN114000844B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4258803A (en) * | 1978-06-21 | 1981-03-31 | American Coldset Corporation | Core barrel for obtaining and retrieving subterranean formation samples |
| CN109403900A (en) * | 2018-12-06 | 2019-03-01 | 深圳大学 | Deep rock is guaranteed the quality coring device and its coring method |
| CN211900529U (en) * | 2019-11-28 | 2020-11-10 | 中国地质科学院勘探技术研究所 | Core drop prevention type coring drilling tool |
| 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 |
| CN111764854A (en) * | 2020-07-29 | 2020-10-13 | 四川大学 | Deep rock in-situ quality-guaranteeing coring device and film-forming coring method thereof while drilling |
| CN111999099A (en) * | 2020-08-07 | 2020-11-27 | 深圳大学 | Moon-based fidelity coring device and in-situ self-healing sealing method |
| CN213016259U (en) * | 2020-08-27 | 2021-04-20 | 中国地质科学院勘探技术研究所 | Multi-flap type turnover plate core clamping mechanism capable of being closed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162987A (en) * | 2022-07-15 | 2022-10-11 | 平顶山天安煤业股份有限公司 | Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer |
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