CN106351597B - A kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine - Google Patents

A kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine Download PDF

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Publication number
CN106351597B
CN106351597B CN201611017992.4A CN201611017992A CN106351597B CN 106351597 B CN106351597 B CN 106351597B CN 201611017992 A CN201611017992 A CN 201611017992A CN 106351597 B CN106351597 B CN 106351597B
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China
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tube
pressurize
clamping stent
valve
bullet
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CN106351597A (en
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万步炎
黄筱军
王佳亮
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • E21B25/18Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being specially adapted for operation under water

Abstract

The invention discloses a kind of gas hydrates pressurize cord coring drills suitable for seabed drilling machine, including outer pipe assembly and inner tube assembly, outer pipe assembly include outer tube and seat ring;Inner tube assembly includes fishing spearhead and lower end sealing cover;Fishing spearhead is connect with bullet card detent mechanism, and bullet card detent mechanism is connect with clamping stent is played, and pressurize valve system and safety relief valve can be connected to the gap played between clamping stent endoporus and bullet clamping stent and outer tube;The hanging ring played on clamping stent side wall is placed on the seat ring of outer tube madial wall;Clamping stent is played to connect with inner pipe joint by single action mechanism;Inner pipe joint is connect with inner tube, and rock core bushing pipe is arranged in inner tube;The endoporus connection of clamping stent, single action mechanism, inner pipe joint and rock core bushing pipe is played, sea fishing is located in the clip spring seat of inner tube lower end;Clip spring seat is connect with lower end sealing cover.The configuration of the present invention is simple, reliability are high;It can realize the pressurize sealing to samples taken, meet the applying working condition for the seabed drilling machine for strictly limiting underwater weight.

Description

A kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine
Technical field
The present invention relates to a kind of gas hydrates cord coring drill, more particularly, to a kind of suitable for seabed drilling machine Gas hydrates pressurize cord coring drill.
Background technology
Deep-sea gas hydrates develop and use a new hot spot for having become countries in the world Future strategy.It bores It is to obtain the most straightforward approach of gas hydrates sample to visit coring.Due to gas hydrates formation and there are cryogenic high pressures Under environment, mainly carry out the sampling work of gas hydrates using gastight sampling technology both at home and abroad.Current existing pressurize takes Primarily directed to sea drilling ship sampled form, cooperation is located at the drilling machine on lash ship deck and uses sample drilling tool.It is simultaneously unsatisfactory for tight Lattice limit the applying working condition of the seabed drilling machine of underwater weight, there are bore diameters greatly, core sample diameter is small, drilling tool quality is big, The problems such as drilling tool structure is complicated.
Invention content
In order to solve the above technical problem, the present invention provides it is a kind of it is simple in structure, reliability is high, and can be to samples taken Pressurize sealing the gas hydrates pressurize cord coring drill suitable for seabed drilling machine.
The technical solution adopted by the present invention is:Including outer pipe assembly and inner tube assembly, the outer pipe assembly includes bullet card Shelves head, bullet card room, seat ring, outer tube, reamer and drill bit;The inner tube assembly includes fishing spearhead, bullet card detent mechanism, pressurize Valve system, safety relief valve play clamping stent, hanging ring, single action mechanism, inner pipe joint, return water ball valve, inner tube, rock core bushing pipe, card Spring abutment, lower end sealing cover and sea fishing or clamp spring;Fishing spearhead is connect with bullet card detent mechanism, bullet card detent mechanism and bullet clamping stent On playing clamping stent, pressurize valve system can be connected to bullet with safety relief valve for connection, pressurize valve system and safety relief valve setting Gap between clamping stent endoporus and bullet clamping stent and outer tube;It plays clamping stent side wall and is equipped with hanging ring;Hanging ring is placed in outer tube On interior seat ring;Clamping stent is played to connect with single action mechanism;Single action mechanism is connect with inner pipe joint;The lower end of inner pipe joint and inner tube Upper end connection, rock core bushing pipe be arranged in inner tube;The endoporus for playing clamping stent, single action mechanism, inner pipe joint and rock core bushing pipe connects It is logical, return water ball valve is equipped in the endoporus of inner pipe joint;The lower end of inner tube is connect with clip spring seat, and sea fishing or clamp spring are arranged in clip spring seat It is interior;Clip spring seat is connect with lower end sealing cover.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the upper end of inner tube Pressurize valve system includes check valve and shift fork;The check valve is arranged in the unidirectional valve opening on playing clamping stent, in the middle part of shift fork It is hinged with clamping stent is played, one end of shift fork is equipped with top pawl, and top pawl is contacted with inner elements of check valve, the other end and the locking position of bullet of shift fork The receipts card cylinder inner wall of mechanism contacts;Shift fork can open and close check valve.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the shift fork it is another End is equipped with shift fork idler wheel, and the cylindrical surface of shift fork idler wheel is contacted with the receipts card cylinder inner wall in bullet card detent mechanism.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the outside of the clip spring seat Wall is equipped with screw thread, and lower part is equipped with sealing cylinder;The madial wall of said inner tube lower end sealing cover is equipped with internal thread and sealing Slot, seal groove is interior to be equipped with sealing ring;Inner tube lower end sealing cover can be threadedly coupled with clip spring seat.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the pressurize valve system Also include guiding valve, the middle part of the bullet clamping stent is equipped with multiple drainage holes, plays the top of drainage hole on clamping stent side wall Be respectively arranged below with seal groove, guiding valve endoporus with play clamping stent cooperation, and can be slided on playing clamping stent.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the single action mechanism packet Mandrel, thrust ball bearing, casing end cap and locking nut are included, the upper end of mandrel is connect with clamping stent is played, the casing end cap Sealing ring is equipped between the upper end of inner pipe joint, casing end cap and inner pipe joint;Mandrel passes through casing end cap, mandrel Lower end is equipped with locking nut, and thrust ball bearing is equipped between the lower face and locking nut of casing end cap;Mandrel is equipped with flange, Sleeve end is supported on by thrust ball bearing to cover;It is respectively equipped with sealing between the mandrel and bullet clamping stent and casing end cap Circle;Sealing ring is equipped between the inner pipe joint and inner tube;Sealing ring is equipped between the inner tube and clip spring seat.
The above-mentioned gas hydrates pressurize cord coring drill suitable for seabed drilling machine, the single action mechanism is also Including buffer spring, buffer spring is arranged between the thrust ball bearing at locking nut and casing end cap lower face.
Compared with prior art, the beneficial effects of the invention are as follows:
The present invention is equipped with pressurize valve system and lower end sealing cover, normally when drilling, pressure retaining valve mechanism connection bullet clamping stent Endoporus and the gap between clamping stent and outer tube is played, after drilling, pressurize valve system is closed, and realizes the close of inner tube assembly upper end Envelope;The lower end sealing cover clip spring seat connection of the present invention, realizes the sealing of inner tube assembly lower end, and then realize to samples taken Pressurize sealing, achieve the purpose that under the premise of compared with bradawl bore dia obtain larger diameter pressurize core sample;The present invention was both Forced suction coring may be used, and rotary drilling mode coring may be used, improve the adaptability to drilled strata;This Invention also has the advantages that simple in structure, reliability is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of 1 working condition of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of 1 packing state of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of 2 working condition of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of 2 packing state of the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of 3 working condition of the embodiment of the present invention.
Fig. 6 is the structural schematic diagram of 3 packing state of the embodiment of the present invention.
In figure:1- drags for spearhead;2- adapter couplings;3- receives card cylinder;4- compression springs;5- bullet snap-gauges;6- bullet cards room;7- shift forks;71- Shift fork idler wheel;72- straight pins;8- check valves;9- safety relief valves;10- bullet clamping stents;11- hanging rings;12- seat rings;13- cores Axis;131-O type sealing rings;132- buffer springs;14- thrust ball bearings;15- casing end caps;151- sealing rings;152- is sealed Circle;16- locking nuts;17- inner pipe joints;171- sealing rings;18- sieves;19- return water ball valves;20- outer tubes;21- inner tubes;22- Rock core bushing pipe;23- reamers;24- clip spring seats;241- sealing rings;It drags in the seas 25-;26- drill bits;The lower ends 27- sealing cover;271- Seal groove;272- sealing rings;29- clamp springs.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, the present invention includes outer pipe assembly and inner tube assembly, inner tube assembly is placed in outer pipe assembly.It is described outer Pipe assembly includes bullet card shelves head 2, bullet card room 6, seat ring 12, outer tube 20, reamer 23 and drill bit 26;Bullet card shelves head 2, bullet card room 6, Outer tube 20, reamer 23 and drill bit 26 are sequentially connected;Seat ring 12 is mounted on the inner wall of outer tube 20.
The inner tube assembly includes fishing spearhead 1, bullet card detent mechanism, plays clamping stent 10, pressurize valve system, safety relief Valve 9, hanging ring 11, single action mechanism, inner pipe joint 17, return water ball valve 19, inner tube 21, rock core bushing pipe 22, sea fishing 25, clip spring seat 24 With inner tube lower end sealing cover 27;The bullet card detent mechanism includes receiving card cylinder 3, compression spring 4 and bullet snap-gauge 5, the pressurize Valve system includes check valve 8 and shift fork 7;The check valve 8 is arranged in the unidirectional valve opening on playing clamping stent 10, unidirectional valve opening Connection plays the endoporus of clamping stent 10 and plays the gap between clamping stent 10 and outer tube 20.7 middle part of shift fork passes through straight pin 72 and bullet Clamping stent 10 is hinged, and one end of shift fork 7 is equipped with top pawl, and top pawl is contacted with the spool of check valve 8, and the other end of shift fork 7, which is equipped with, to be dialled Idler wheel 71 is pitched, the cylindrical surface of shift fork idler wheel 71 is contacted with the inner wall of the receipts card cylinder 3 in bullet card detent mechanism;7 energy of shift fork Enough to link with bullet card detent mechanism, realization makes check valve 8 be in open state always in drilling process, after drilling unidirectionally Valve 8 is closed.
The single action mechanism is by mandrel 13, buffer spring 131, thrust ball bearing 14, casing end cap 15, locking nut 16 Composition, the upper end of mandrel 13 are connect with clamping stent 10 is played, and the casing end cap 15 is mounted on the upper end of inner pipe joint, sleeve end Sealing ring 151 is equipped between lid 15 and inner pipe joint 17.Mandrel 13 passes through casing end cap 15, the lower end of mandrel 13 to be equipped with locking screw Mother 16, is equipped with buffer spring 131 between 15 lower face of locking nut 16 and casing end cap, the upper end of casing end cap 15 on mandrel 13 It is respectively equipped with a thrust ball bearing 14 at face, lower face, the thrust ball bearing 14 on mandrel 13 at 15 lower face of casing end cap Buffer spring 131 is equipped between locking nut 16.It is respectively equipped between mandrel 13 and bullet clamping stent 10 and casing end cap 15 close Seal 131 and sealing ring 152.
The lower end of fishing spearhead 1 is connect with bullet card detent mechanism, and the lower end of bullet card detent mechanism is connect with clamping stent 10 is played;It protects Valve mechanism and the setting of safety relief valve 9 are playing in clamping stent 10, can be connected to the endoporus and bullet clamping stent 10 for playing clamping stent 10 Gap between outer tube 20.The lower part for playing the side wall of clamping stent 10 is equipped with hanging ring 11, and hanging ring 11 is placed in 20 inside of outer tube On seat ring 12 on plate.The lower end for playing clamping stent 10 is connect with the upper end of single action mechanism, the lower end of single action mechanism and inner pipe joint 17 upper end connection, bullet clamping stent 10, single action mechanism are connected to the endoporus of inner pipe joint 17, are equipped in the endoporus of inner pipe joint 17 Return water ball valve 19;The upper end of return water ball valve 19 is equipped with sieve 18.The lower end of inner pipe joint 17 is connect with the upper end of inner tube 21, rock core Bushing pipe 22 is arranged in inner tube 21;Sealing ring 171 is equipped between inner pipe joint 17 and inner tube 21;The lower end of inner tube 21 and clip spring seat 24 upper ends connect, and sea fishing 25 is arranged in clip spring seat 24;Sealing ring 241 is equipped between inner tube 21 and clip spring seat 24.
Its outer surface top of the clip spring seat 24 is equipped with screw thread, and lower part, which is equipped with, seals cylinder, in lower end sealing cover 27 Equipped with internal thread and interior sealing ring recess 271, sealing ring 272 is equipped in interior sealing ring recess 271.In on the drilling machine ontology of seabed Pipe lower end sealing cover unloading device can realize the threaded connection of lower end sealing cover 27 and clip spring seat 24, the sealing of cooperation lower end Sealing ring 272 in lid 27 realizes the sealing to inner tube underpart opening.
The specifically used method of the present invention is as follows:Before drilling starts, manipulator crawl inner tube assembly moves on drilling machine ontology 27 unloading device of lower end sealing cover at, lower end sealing cover 27 is detached with inner tube assembly by unloading device, with inner tube Lower end sealing cover 27 after assembly separation is temporarily stored in unloading device, while manipulator will remove in lower end sealing cover 27 Pipe assembly moves to aperture, is transferred inner tube assembly into hole outer bottom pipe assembly using the rope winch cooperation salvaging mechanism on drilling machine Precalculated position, carry out drilling operation.
When normal drilling, bullet snap-gauge 5 in inner tube assembly bullet card detent mechanism by outer pipe assembly be hit by a bullet card room 6 radial direction about Beam makes 3 position of receipts card cylinder move up in an axial direction, receive card 3 pairs of shift forks 7 of cylinder in shift fork idler wheel 71 play position-limiting action, force shift fork 7 around Straight pin 72 rotates, and triggering shift fork 7 acts, and the spool of check valve 8 is open-top, it is ensured that check valve 8 begins in drilling process It is in open state eventually, forms drainage channel.Forced suction coring pattern had both can be used in the present invention, coordinated on drilling machine ontology Pumping piston cylinder makes to form piston type negative pressure in inner tube assembly during coring, improves coring rate.Abrasion drill can also be used Enterprising spirit pattern, flushing liquor is through the annular gap between inner tube 21 and outer tube 20, and the mouth of a river for flowing through drill bit 26 reaches bottom hole, to boring First 26 are cooled down, and portable hole bed rock powder returns to aperture on the annular gap between drilling rod and hole wall.
After drilling, inner tube assembly is quickly carried to aperture, radial direction of the bullet card room 6 to bullet snap-gauge 5 using salvaging mechanism Constraint release is received 3 position of card cylinder and is moved down in an axial direction, and the limit for receiving card 3 pairs of shift fork idler wheels 71 of cylinder releases, and shift fork 7 resets, check valve 8 close, and realize the sealing of inner tube assembly upper end.Inner tube assembly is moved into the sealing of the lower end on drilling machine ontology by manipulator At 27 unloading of lid, temporary lower end sealing cover 27 inside it is connect by unloading device with clip spring seat 24, and cooperation lower end is close Sealing ring 272 in capping 27 realizes the sealing to inner tube assembly lower end.So far, drilling tool inner tube assembly upper and lower end parts are in The gas hydrates sample of sealing state, storage inside is also at pressurize sealing state, as shown in Figure 2.Work as inner tube assembly In pressure because temperature rise be more than certain value after, safety relief valve 9 automatically turn on, shield to inner tube assembly.
Embodiment 2
As shown in figure 3, its structure is similar to Example 1, the difference is that:The structure of pressurize valve system is different, protects Valve mechanism includes guiding valve 28, plays 10 top of clamping stent and is equipped with the multiple drainage holes 29 of radial equipartition, plays the side wall of clamping stent 10 Seal groove 301 and seal groove 302 are respectively equipped with above and below upper drainage hole 29;In seal groove 301 and seal groove 302 It is respectively equipped with sealing ring 303 and sealing ring 304;The endoporus of guiding valve 28 coordinates with clamping stent 10 is played, and can play clamping stent 10 Upper axial movement.When normal drilling, guiding valve 28 is in open state, and the water in drilling tool inner tube assembly can be along 10 top of bullet clamping stent Drainage hole 29 be discharged;After drilling, as shown in figure 4, quickly being carried inner tube assembly to aperture using salvaging mechanism, utilize Shifting fork mechanism on drilling machine ontology makes guiding valve 28 be moved down along card holder 30 is played, and guiding valve 28 is closed, and cooperation plays card holder Sealing ring 303 in 30 seal grooves 301 and seal groove 302 and sealing ring 304 realize the pressurize sealing of inner tube assembly upper end.
Embodiment 3
As shown in Figure 5,6, structure is similar to Example 1, the difference is that:The single action mechanism is without containing lock The buffer spring 131 between thrust ball bearing at tight 15 lower face of nut 16 and casing end cap, at 15 lower face of casing end cap Thrust ball bearing directly positioned on mandrel 13 by locking nut 16.The other end of the shift fork 7 of the pressurize valve system It is not provided with shift fork idler wheel 71, the other end of shift fork 7 is directly contacted with the inner wall for receiving card cylinder 3.The sea fishing 25 of inner tube lower end is by clamp spring 29 substitute.

Claims (7)

1. a kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine, including outer pipe assembly and inner tube it is total At the outer pipe assembly includes bullet card shelves head, bullet card room, seat ring, outer tube, reamer and drill bit;The inner tube assembly packet It includes fishing spearhead, bullet card detent mechanism, play clamping stent, hanging ring, single action mechanism, inner pipe joint, return water ball valve, inner tube, rock core lining Pipe, clip spring seat and sea fishing or clamp spring;It is characterized in that:The inner tube assembly further include pressurize valve system, safety relief valve and under End part seal lid;Fishing spearhead is connect with bullet card detent mechanism, and bullet card detent mechanism is connect with clamping stent is played, pressurize valve system and peace On playing clamping stent, pressurize valve system and safety relief valve can be connected to and play clamping stent endoporus and play clamping stent for full relief valve setting Gap between outer tube;It plays clamping stent side wall and is equipped with hanging ring;Hanging ring is placed on the seat ring in outer tube;Play clamping stent with Single action mechanism connects;Single action mechanism is connect with inner pipe joint;The lower end of inner pipe joint and the upper end of inner tube connect, and rock core bushing pipe is set It sets in inner tube;It plays clamping stent, single action mechanism, inner pipe joint to be connected to the endoporus of rock core bushing pipe, be set in the endoporus of inner pipe joint There is return water ball valve;The lower end of inner tube is connect with clip spring seat, and sea fishing or clamp spring are arranged in clip spring seat;Clip spring seat is sealed with lower end Lid connection.
2. the gas hydrates pressurize cord coring drill according to claim 1 suitable for seabed drilling machine, feature It is:The pressurize valve system of the upper end of inner tube includes check valve and shift fork;The check valve is arranged on playing clamping stent Hinged with bullet clamping stent in the middle part of shift fork in unidirectional valve opening, one end of shift fork is equipped with top pawl, and top pawl is contacted with inner elements of check valve, group The other end of fork is contacted with the receipts card cylinder inner wall of bullet card detent mechanism;Shift fork can open and close check valve.
3. the gas hydrates pressurize cord coring drill according to claim 2 suitable for seabed drilling machine, feature It is:The other end of the shift fork is equipped with shift fork idler wheel, the cylindrical surface of shift fork idler wheel in the receipts card cylinder in bullet card detent mechanism Wall contacts.
4. the gas hydrates pressurize cord coring drill according to claim 1 suitable for seabed drilling machine, feature It is:The lateral wall of the clip spring seat is equipped with screw thread, and lower part is equipped with sealing cylinder;The madial wall of said inner tube lower end sealing cover It is equipped with internal thread and seal groove, sealing ring is equipped in seal groove;Inner tube lower end sealing cover can carry out screw thread with clip spring seat Connection.
5. the gas hydrates pressurize cord coring drill according to claim 1 suitable for seabed drilling machine, feature It is:The pressurize valve system also includes guiding valve, and the middle part of the bullet clamping stent is equipped with multiple drainage holes, plays clamping stent side Seal groove is respectively equipped on wall above and below drainage hole, guiding valve endoporus coordinates with clamping stent is played, and can be in bullet card branch It is slided on frame.
6. the gas hydrates pressurize cord coring drill according to claim 1 suitable for seabed drilling machine, feature It is:The single action mechanism includes mandrel, thrust ball bearing, casing end cap and locking nut, upper end and the bullet clamping stent of mandrel Connection, the casing end cap are mounted on the upper end of inner pipe joint, and sealing ring is equipped between casing end cap and inner pipe joint;Mandrel Across casing end cap, the lower end of mandrel is equipped with locking nut, and thrust ball is equipped between the lower face and locking nut of casing end cap Bearing;Mandrel is equipped with flange, is supported on sleeve end by thrust ball bearing and covers;The mandrel and bullet clamping stent and casing Sealing ring is respectively equipped between end cap;Sealing ring is equipped between the inner pipe joint and inner tube;The inner tube and clip spring seat Between be equipped with sealing ring.
7. the gas hydrates pressurize cord coring drill according to claim 6 suitable for seabed drilling machine, feature It is:The single action mechanism further includes buffer spring, and pushing away at locking nut with casing end cap lower face is arranged in buffer spring Between power ball bearing.
CN201611017992.4A 2016-11-17 2016-11-17 A kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine Active CN106351597B (en)

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CN107288565B (en) * 2017-07-28 2018-11-20 中国地质科学院勘探技术研究所 A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool
CN109025880B (en) * 2018-08-13 2019-11-26 湖南科技大学 A kind of deposit core-drilling technique suitable for seabed wire line coring drilling machine
US10927606B2 (en) 2018-08-13 2021-02-23 Hunan University Of Science And Technology Sediment core-drilling process for submarine wire-line coring drill rig

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CN2584807Y (en) * 2002-11-29 2003-11-05 青岛海洋地质研究所 Pressure retaining thermal insulation core extracting pipe for natrual gas hydrate at deep water shallow hole station
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