CN113898307B - Flexible liquid storage and release mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device - Google Patents
Flexible liquid storage and release mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device Download PDFInfo
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- CN113898307B CN113898307B CN202111159440.8A CN202111159440A CN113898307B CN 113898307 B CN113898307 B CN 113898307B CN 202111159440 A CN202111159440 A CN 202111159440A CN 113898307 B CN113898307 B CN 113898307B
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- 238000005553 drilling Methods 0.000 title claims abstract description 39
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 25
- 238000001125 extrusion Methods 0.000 claims abstract description 37
- 239000011435 rock Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 14
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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
- 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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Abstract
The invention discloses a flexible liquid storage and release mechanism of an in-situ self-triggering film-forming quality-guaranteeing coring device while drilling, which comprises a film-forming liquid release mechanism and an extrusion assembly, wherein the extrusion assembly is used for storing and extruding a film-forming liquid, one end of the film-forming liquid release mechanism is connected with the extrusion assembly, the other end of the film-forming liquid release mechanism is communicated with a mixing coil pipe, the film-forming liquid release mechanism is used for controlling the connection and disconnection between the extrusion assembly and the mixing coil pipe, the extrusion assembly comprises a plurality of liquid storage coil pipes, the liquid storage coil pipes are used for storing liquid A and liquid B, the film-forming liquid release mechanism comprises a regulating cavity communicated with the mixing coil pipe, the other end of the regulating cavity is communicated with the liquid storage coil pipe, a spring movable assembly used for controlling the connection and disconnection of the regulating cavity is arranged in the regulating cavity, and the mixing coil pipe is used for mixing the liquid A and the liquid B to form a mixed film-forming liquid and outputting the film-forming liquid to the outer surface of a rock sample; and a layer of solid quality-guaranteeing sealing film with high barrier property is formed by matching with other quality-guaranteeing coring mechanisms and through the cross-linking and curing action, so that the core drill is prevented from being polluted by well fluid.
Description
Technical Field
The invention relates to the technical field of scientific drilling of rocks, in particular to a flexible liquid storage and release 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 film-forming-while-drilling coring method, a flexible liquid storage and release mechanism of the in-situ self-triggering quality-guaranteeing film-forming-while-drilling coring device capable of forming a solid sealing film on the surface of a rock core while drilling and storing original component information in the rock core in real time is urgently needed.
Disclosure of Invention
The invention aims to provide a flexible liquid storage release mechanism of an in-situ self-triggering film-forming quality-guaranteeing coring device while drilling, which is matched with other quality-guaranteeing coring structures to realize that a film-forming single liquid forms a film-forming liquid through a static mixing stirrer in the dynamic process of advancing coring while drilling, the film-forming liquid uniformly and completely covers the surface of a rock core and can form a solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing, so that the rock core is protected from being polluted by drilling fluid, the loss of substances in the rock core is prevented, the core can truly reflect the in-situ stratum state, guidance is provided for the exploration and development operation of deep resources, and a foundation is laid for the research and research of deep rock science and deep biology.
The embodiment of the invention is realized by the following steps:
the flexible liquid storage and release mechanism comprises a film forming liquid release mechanism and an extrusion assembly, wherein the extrusion assembly is used for storing and extruding a film forming liquid, one end of the film forming liquid release mechanism is connected with the extrusion assembly, the other end of the film forming liquid release mechanism is communicated with a mixing coil pipe, the film forming liquid release mechanism is used for controlling the on-off of the extrusion assembly and the mixing coil pipe, the extrusion assembly comprises a plurality of liquid storage coil pipes, the liquid storage coil pipe is used for storing liquid A and liquid B, the film forming liquid release mechanism comprises a regulating cavity communicated with the mixing coil pipe, the other end of the regulating cavity is communicated with the liquid storage coil pipe, a spring movable assembly used for controlling the on-off of the regulating cavity is arranged in the regulating cavity, and the mixing coil pipe is used for mixing the film forming liquid A and the liquid B to form a mixed film and outputting the film forming liquid to the outer surface of a rock sample. By matching with other quality-guaranteeing coring structures, the film-forming liquid uniformly and completely covers the surface of the core in the dynamic process of core advancing and coring while drilling, a layer of solid quality-guaranteeing sealing film with high barrier property is formed through the cross-linking and curing action, the core is protected from being polluted by drilling fluid, the loss of substances in the core is prevented, the core can truly reflect the in-situ stratum state, guidance is provided for deep resource exploration and development operation, and a foundation is laid for deep rock science and deep biological exploration and research.
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, 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 on-off between the liquid inlet and the liquid outlet.
Preferably, the number of the liquid storage coil pipes is two, the liquid storage coil pipes are respectively a liquid storage coil pipe A and a liquid storage coil pipe B, the mixing coil pipe is connected with a three-way connecting piece, and the other two ends of the three-way connecting piece are respectively connected with the liquid storage coil pipe A and the liquid storage coil pipe B. The stock solution coil pipe can change according to the quantity of mixed liquid, because two kinds of liquid that this device adopted, consequently choose for use two stock solution coil pipes, if need mix more liquid, then select to use more stock solution coil pipes.
Preferably, the liquid storage coil A and the liquid storage coil B are arranged in a staggered and coiled mode, no opening is formed in the bottoms of the liquid storage coil A and the liquid storage coil B, and a communication opening communicated with the liquid inlet is formed in the top of the liquid storage coil A and the liquid storage coil B.
Preferably, stock solution coil A and stock solution coil B are the bellows, and independent setting is in the left and right sides respectively, stock solution coil A and stock solution coil B bottom do not have the opening, the top be provided with the intercommunication opening of inlet intercommunication.
Preferably, the membrane deposition device further comprises a central rod and a core taking barrel, wherein the central rod is arranged in the core taking barrel in a sealing and telescopic manner, a compression part is fixed on the central rod and is connected with the inner wall of the core taking barrel in a sliding and sealing manner, the central rod, the core taking barrel and the compression part are enclosed to form an extrusion cavity, and the extrusion assembly and the membrane deposition release mechanism are arranged in the extrusion cavity.
Preferably, the film-forming solution releasing mechanism is arranged above the extrusion cavity, the bottoms of the liquid storage coil A and the liquid storage coil B are not provided with openings, the top of the liquid storage coil A is provided with an opening communicated with the film-forming solution releasing mechanism, the mixing coil is arranged at the bottom of the compression part and fixed on the coring barrel, and the coring barrel is provided with a first infusion tube used for communicating the mixing coil with the adjusting cavity.
Preferably, a static mixer is arranged in the mixing coil, is arranged at one end close to the liquid inlet of the mixing coil and is used for mixing different film-forming single liquids to form a mixed film-forming liquid.
Preferably, a bottom sealer is further arranged at one end, close to the coring bit, of the coring barrel, and 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, the end part of each petal is fixed on the inner wall of the core barrel, and the other end surfaces of the petals are mutually abutted to seal the bottom of the core barrel.
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.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the flexible liquid storage release mechanism of the in-situ self-triggering quality-guaranteeing coring device for the film formation while drilling comprises a film formation liquid release mechanism and an extrusion assembly, wherein the extrusion assembly is used for storing and extruding a film formation liquid, one end of the film formation liquid release mechanism is connected with the extrusion assembly, the other end of the film formation liquid release mechanism is communicated with a mixing coil, the film formation liquid release mechanism is used for controlling the connection and disconnection between the extrusion assembly and the mixing coil, the extrusion assembly comprises a plurality of liquid storage coils, the liquid storage coils are used for storing liquid A and liquid B, the film formation liquid release mechanism comprises an adjusting cavity communicated with the mixing coil, the other end of the adjusting cavity is communicated with the liquid storage coils, a spring movable assembly used for controlling the connection and disconnection of the adjusting cavity is arranged in the adjusting cavity, and the mixing coil is used for mixing the film formation liquid A and the liquid B to form mixed film formation liquid and outputting the film formation liquid to the outer surface of a rock sample. By matching with other quality-guaranteeing coring structures, the film-forming liquid uniformly and completely covers the surface of the core in the dynamic process of advancing and coring while drilling, and can form a layer of solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing, so that the core is protected from being polluted by drilling fluid, the loss of substances in the core is prevented, the core can truly reflect the in-situ stratum state, guidance is provided for deep resource exploration and development operation, and a foundation is laid for research and research 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 a first configuration of the present invention prior to coring;
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 isbase:Sub>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 a first configuration of the present invention for coring purposes;
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 configuration of a first configuration of the present invention;
FIG. 10 is an enlarged view of portion B of FIG. 9 of the present invention;
FIG. 11 is a perspective view of a second configuration of the present invention prior to coring;
FIG. 12 is a cored structural view of a second construction of the present invention;
FIG. 13 is a block diagram of a second configuration of the present invention for coring purposes;
FIG. 14 is a pre-coring configuration of a first configuration of the reservoir A and reservoir B of the present invention;
FIG. 15 is a cored structural view of a first configuration of a reservoir A and a reservoir B of the present invention;
FIG. 16 is a pre-coring configuration of a reservoir coil A and a reservoir coil B of a second configuration of the invention;
fig. 17 is a configuration diagram of a liquid storage coil a and a liquid storage coil B having a second configuration of the present invention after coring. Description of specific element symbols: 1, centering a rod; 2, a bottom sealer; 3 a compression section; 4 a film-forming solution releasing mechanism; 5, a liquid storage coil pipe A;6, a liquid storage coil pipe B;7 a first infusion tube; 8, a core barrel; 9 mixing coil pipe; 10, snapping a card; 11, a core claw; 12 a core; 41 plugging screws; 42 a spring; 43 a floating piston; 91 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 17, the flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device of the present embodiment includes a film-forming liquid release mechanism 4 and an extrusion assembly, the extrusion assembly is used for storing and extruding a film-forming liquid, one end of the film-forming liquid release mechanism 4 is connected to the extrusion assembly, the other end of the film-forming liquid release mechanism is communicated with a mixing coil 9, the film-forming liquid release mechanism 4 is used for controlling the connection and disconnection between the extrusion assembly and the mixing coil 9, the extrusion assembly includes a plurality of liquid storage coils, the liquid storage coils are used for storing liquid a and liquid B, the film-forming liquid release mechanism 4 includes a regulating cavity communicated with the mixing coil 9, the other end of the regulating cavity is communicated with the liquid storage coils, a spring 42 movable assembly for controlling the connection and disconnection of the regulating cavity is disposed in the regulating cavity, and the mixing coil 9 is used for mixing the liquid a film-forming liquid a and the liquid B to form a mixed film-forming liquid, and outputting the film to the outer surface of a rock sample. By matching with other quality-guaranteeing and coring structures, the film-forming liquid covers a layer of solid quality-guaranteeing sealing film with high barrier property on the surface of the core 12 in the dynamic process of advancing and coring while drilling, is uniformly and completely covered, and can form a layer of solid quality-guaranteeing sealing film with high barrier property through crosslinking and curing, so that the core 12 is protected from being polluted by drilling fluid, the loss of substances in the core 12 is prevented, the core 12 can truly reflect the in-situ stratum state, guidance is provided for exploration and development operation of deep resources, and a foundation is laid for research and research of deep rock science and deep biology.
Example 2: the spring 42 movable assembly of this embodiment includes plugging screw 41, spring 42 and floating piston 43 that set up in adjusting the intracavity, and the one end of adjusting the chamber is provided with the inlet with liquid storage coil pipe intercommunication, is provided with the liquid outlet of intercommunication mixing coil pipe 9 on the lateral wall of adjusting the chamber, and floating piston 43 is used for controlling the break-make between inlet and the liquid outlet. The quantity of the stock solution coil of this embodiment is two, is stock solution coil A and stock solution coil B respectively, is connected with the tee bend connecting piece on the hybrid coil 9, and stock solution coil A and stock solution coil B are connected respectively to the other both ends of tee bend connecting piece.
Example 3: the liquid storage coil A and the liquid storage coil B of this embodiment are staggered and coiled, and there is not the opening bottom liquid storage coil A and liquid storage coil B, and the top is provided with the intercommunication opening that communicates with the inlet. The liquid storage coil A and the liquid storage coil B are two whole pipes wound on the central rod 1, and the bottom of the liquid storage coil A and the bottom of the liquid storage coil B are located on the step of the central rod 1. Is made of soft, easily deformable and high-temperature resistant materials (such as silica gel, latex and the like), and is internally and respectively isolated with a pre-stored film forming solution A (an epoxy resin matrix and the like) and a film forming solution B (an epoxy resin curing agent and the like). Before coring: the film forming A/B liquid is pre-stored in the liquid storage coil A and the liquid storage coil B 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 liquid releasing mechanism 4 and the coring barrel 8 move downwards, and the core 12 enters the coring barrel 8 through the bottom sealer 2 while drilling. The central rod 1, the film-forming solution releasing mechanism 4 and the core-taking barrel 8 move relatively to reduce the liquid storage space, and apply axial compression force to the liquid storage coil A and the liquid storage coil B to deform and discharge the film-forming A/B solution respectively. The film-forming a/B liquid presses the floating piston 43 and the spring 42 to expose the liquid outlet. The film-forming A/B solution flows downwards through the infusion tube and is collected in the mixing coil 9, and the film-forming solution with curing capability is fully mixed by a static mixer 91 arranged in the bottom of the mixing coil 9. 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 2 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 curing reaction in an annular space between the core 12 and the core barrel 8 and in a space at the top and the bottom of the core 12 to form a solid quality-guaranteeing sealing film.
Example 4: the stock solution coil A and the stock solution coil B of this embodiment are the bellows, and independent setting is in the left and right sides respectively, and stock solution coil A and stock solution coil B do not have the opening in the bottom, and the top is provided with the intercommunication opening with the inlet intercommunication. The procedure was as in example 3.
Example 5: the device further comprises a central rod 1 and a core taking cylinder 8, wherein the central rod 1 is arranged in the core taking cylinder 8 in a sealing and telescopic manner, a compression part 3 is fixed on the central rod 1, the compression part 3 is connected with the inner wall of the core taking cylinder 8 in a sliding and sealing manner, the central rod 1, the core taking cylinder 8 and the compression part 3 are enclosed to form an extrusion cavity, and an extrusion assembly and a film forming liquid releasing mechanism 4 are arranged in the extrusion cavity. The film-forming liquid releasing mechanism 4 of this embodiment is disposed above the extrusion chamber, the bottoms of the liquid storage coil A and the liquid storage coil B have no opening, the top is provided with an opening communicated with the film-forming liquid releasing mechanism 4, the mixing coil 9 is disposed at the bottom of the compression part 3 and fixed on the coring barrel 8, and the coring barrel 8 is provided with a first infusion tube 7 for communicating the mixing coil 9 and the adjustment chamber. The static mixer 91 is disposed in the mixing coil 9 of this embodiment, and the static mixer 91 is disposed at an end close to the liquid inlet of the mixing coil 9, and is used for mixing different film-forming single liquids to form a mixed film-forming liquid. A bottom sealer 2 is further arranged at one end, close to the coring bit, of the coring barrel 8, and the bottom sealer 2, the central rod 1 and the coring barrel 8 enclose to form a sampling cavity for containing a rock sample; the bottom sealer 2 is of an elastic petal-shaped structure, the end part of each petal is fixed on the inner wall of the core taking barrel 8, and the other end surfaces are mutually abutted to seal the bottom of the core taking barrel 8. 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.
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 flexible liquid storage release mechanism of the in-situ self-triggering quality-guaranteeing coring device with the function of film formation while drilling is characterized by comprising a film formation liquid release mechanism and an extrusion assembly, wherein the extrusion assembly is used for storing and extruding a film formation liquid, one end of the film formation liquid release mechanism is connected with the extrusion assembly, the other end of the film formation liquid release mechanism is communicated with a mixed coil pipe, the film formation liquid release mechanism is used for controlling the connection and disconnection between the extrusion assembly and the mixed coil pipe, the extrusion assembly comprises a plurality of liquid storage coil pipes, the liquid storage coil pipes are used for storing liquid A and liquid B, the film formation liquid release mechanism comprises an adjusting cavity communicated with the mixed coil pipe, the other end of the adjusting cavity is communicated with the liquid storage coil pipe, a spring movable assembly used for controlling the connection and disconnection of the adjusting cavity is arranged in the adjusting cavity, and the mixed coil pipe is used for mixing the film formation liquid A and the liquid B to form mixed film and outputting the film formation liquid to the outer surface of a rock sample.
2. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming-while-drilling quality-guaranteeing coring device as recited in claim 1, wherein the spring movable assembly comprises a blocking 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, 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.
3. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while drilling quality-guaranteeing coring device according to claim 2, wherein the number of the liquid storage coils is two, and the two liquid storage coils are respectively a liquid storage coil A and a liquid storage coil B, the mixing coil is connected with a three-way connecting piece, and the other two ends of the three-way connecting piece are respectively connected with the liquid storage coil A and the liquid storage coil B.
4. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device according to claim 3, wherein the liquid storage coil A and the liquid storage coil B are alternately coiled, no opening is formed at the bottom of the liquid storage coil A and the liquid storage coil B, and a communication opening communicated with the liquid inlet is formed at the top of the liquid storage coil A and the liquid storage coil B.
5. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while drilling quality-guaranteeing coring device according to claim 3, wherein the liquid storage coil A and the liquid storage coil B are corrugated pipes and are respectively and independently arranged on the left side and the right side, no opening is formed in the bottom of the liquid storage coil A and the bottom of the liquid storage coil B, and a communication opening communicated with the liquid inlet is formed in the top of the liquid storage coil A and the top of the liquid storage coil B.
6. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device of claim 3, further comprising a central rod and a coring barrel, wherein the central rod is telescopically and hermetically arranged in the coring barrel, a compression part is fixed on the central rod, the compression part is in sliding and sealing connection with the inner wall of the coring barrel, the central rod, the coring barrel and the compression part are further enclosed to form an extrusion cavity, and the extrusion assembly and the film-forming liquid release mechanism are arranged in the extrusion cavity.
7. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device as claimed in claim 6, wherein the film-forming solution release mechanism is disposed above the extrusion chamber, the bottoms of the liquid storage coil A and the liquid storage coil B are free of openings, the top of the liquid storage coil A is provided with an opening communicated with the film-forming solution release mechanism, the mixing coil is disposed at the bottom of the compression portion and fixed on the coring barrel, and the coring barrel is provided with a first infusion tube for communicating the mixing coil with the adjustment chamber.
8. The flexible storage and release mechanism of the in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device of claim 6, wherein a static mixer is disposed inside the mixing coil, the static mixer being disposed at an end close to the liquid inlet of the mixing coil and configured to mix different film-forming single liquids to form a mixed film-forming liquid.
9. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming-while-drilling quality-guaranteeing coring device as recited in claim 6, wherein a bottom sealer is further disposed at one end of the coring barrel, and the bottom sealer, the central rod and the coring barrel are enclosed to form a sampling cavity for accommodating a rock sample; the bottom sealer is of an elastic petal-shaped structure, the end part of each petal is fixed on the inner wall of the core barrel, and the other end surfaces of the petals are mutually abutted to seal the bottom of the core barrel.
10. The flexible liquid storage and release mechanism of the in-situ self-triggering film-forming while drilling quality assurance coring device of claim 9, wherein a core claw for fixing rock is further disposed in a 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 |
|---|---|---|---|
| CN202111159440.8A CN113898307B (en) | 2021-09-30 | 2021-09-30 | Flexible liquid storage and release mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device |
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| GB2000824A (en) * | 1977-07-06 | 1979-01-17 | American Coldset Corp | Method and core barrel apparatus for obtaining and retrieving subterranean formation samples |
| CN206053884U (en) * | 2016-09-29 | 2017-03-29 | 安徽省地质矿产勘查局313地质队 | sealing liquid rope coring drill |
| 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 |
| CN212716508U (en) * | 2020-07-29 | 2021-03-16 | 四川大学 | Deep rock in-situ quality-guaranteeing coring device |
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| WO2020113515A1 (en) * | 2018-12-06 | 2020-06-11 | 深圳大学 | Quality guaranteed deep rock coring device and coring method therefor |
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| GB2000824A (en) * | 1977-07-06 | 1979-01-17 | American Coldset Corp | Method and core barrel apparatus for obtaining and retrieving subterranean formation samples |
| CN206053884U (en) * | 2016-09-29 | 2017-03-29 | 安徽省地质矿产勘查局313地质队 | sealing liquid rope coring drill |
| 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 |
| CN212716508U (en) * | 2020-07-29 | 2021-03-16 | 四川大学 | Deep rock in-situ quality-guaranteeing coring device |
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