CN109826578A - The rotary coring drilling with keep up pressure device of safety type natural gas hydrate - Google Patents

Abstract

The present invention relates to a kind of rotary coring drilling with keep up pressure devices of safety type natural gas hydrate, and including outer pipe assembly and the inner tube assembly being mounted on inside outer pipe assembly, the bottom end of outer pipe assembly is equipped with drill bit；Said inner tube assembly includes inner tube assembly a and inner tube assembly b, inner tube assembly b is installed on the inside of inner tube assembly a and can move axially along inner tube assembly a, and inner tube assembly a includes that sequentially connected spear-head, bullet mechanism for card, piston tube, middle pipe pipe nipple, packoff nipple, accumulator connecting tube, middle pipe and pressure keeping ball valve overturn sealing mechanism from top to bottom；Inner tube assembly b mentions leading-in device, bindiny mechanism, bullet card suspension mechanism, single action mechanism, crossover sub, adjusting connector, accumulator connecting tube, sealing mechanism, temperature and pressure instrument connecting tube, basket connecting short section and basket including sequentially connected from top to bottom.The safety-type rotary gastight sampling of the present invention, can adapt to the 4th is sedimentary formation and basement rock, and application is relatively reliable.

Description

The rotary coring drilling with keep up pressure device of safety type natural gas hydrate

Technical field

The present invention relates to drilling technique field, the safety type natural gas hydrate of specifically a kind of natural gas hydration is rotary Coring drilling with keep up pressure device.

Background technique

Gas hydrates are the resourceful high-efficiency cleaning energy, are the strategic high grounds of future global energy development, Gas hydrates preservation is below the continental slope seabed of deep-sea or buries in the deposit of arctic regions, since natural gas is hydrated Object needs to keep stablizing without decomposing under stable state of pressure keeping, needs to be acquired by the way of pressure maintaining.Using cutting It cuts pin and cuts triggering basket and extract from pressure keeping ball valve and then the method for ball valve closing, due to shear pin job insecurity, It is cut during launching corer due to colliding with to impact.The cutting once bolt is hit, is easy to cause the inner tube of corer total At off card in advance, so that ball valve closes in advance and coring is caused to fail, therefore uses the corer poor reliability of shear pin, Safety is poor.Therefore provide that a kind of pressure holding effect is good, corer of reliable operation is one urgently to be solved in the art and asks Topic.

Summary of the invention

In view of the deficiencies of the prior art, the present invention provides a kind of rotary coring drilling with keep up pressure device of safety type natural gas hydrate, It can be realized coring drilling with keep up pressure, and reliability, highly-safe and coring success rate are high and adapt to hardpan progress coring.

The technical solution of the present invention is as follows: a kind of rotary coring drilling with keep up pressure device of safety type natural gas hydrate, including outer tube are total Drill bit is equipped at the bottom end with the inner tube assembly that is mounted on inside outer pipe assembly, outer pipe assembly；

Said inner tube assembly includes inner tube assembly a and inner tube assembly b, and inner tube assembly a includes sequentially connected from top to bottom Spear-head, bullet mechanism for card, piston tube, middle pipe pipe nipple, packoff nipple, accumulator connecting tube, middle pipe and pressure keeping ball valve overturning are close Sealing mechanism；Inner tube assembly b mentions leading-in device, bindiny mechanism, bullet card suspension mechanism, single acting engine including sequentially connected from top to bottom Structure, adjusts connector, accumulator connecting tube, sealing mechanism, temperature and pressure instrument connecting tube, basket connecting short section and rock core at crossover sub Pipe；The lower part of bullet card suspension mechanism is installed in middle pipe pipe nipple, and spear-head is for driving bullet card suspension mechanism toward far from middle pipe The direction of pipe nipple moves；Inner tube assembly b is axially fixed in inside inner tube assembly a by bullet card suspension mechanism, and when in off card It when state, can axially upwardly be moved along inner tube assembly a, wherein the off card state are as follows: bullet card suspension mechanism and middle pipe pipe nipple It is detached from；

The bullet mechanism for card and bullet card suspension mechanism cooperate, so that basket keeps axial solid before salvaging coring It is fixed；

The basket is located inside middle pipe；

The pressure keeping ball valve overturning sealing mechanism includes spring retainer ring, ball valve driving pipe nipple, spring, ball valve driving pipe nipple Spring shoulder, ball valve pipe shoulder, upper ball valve seat sealing ring, upper ball valve seat, ball valve pipe, ball valve, ball valve overturning driving bolt, ball valve Axis, ball valve overturning sliding groove, ball valve pipe range circular hole, ball valve window of tube, lower ball valve seat, lower ball valve seat sealing ring, load bearing spring and Ball valve lower cover；Ball valve is equipped with ball valve axis and ball valve overturns sliding groove, and ball valve is equipped with the through-hole passed through for basket；

The upper end of ball valve pipe is connect with the lower end of middle pipe, and the junction of ball valve Guan Yuzhong pipe is arranged in ball valve seal of tube circle, The hollow inside of ball valve pipe is equipped with ball valve window of tube, is equipped with ball valve pipe range circular hole in the middle part of ball valve pipe, is located in ball valve pipe range circular hole Ball valve overturning driving bolt be fixed on ball valve pipe, ball valve overturning driving bolt stretch to the ball valve on ball valve overturning sliding groove It is interior；

Ball valve is fixed in the ball valve window of tube on ball valve pipe by ball valve axis, and one end of ball valve axis connects ball valve, The other end stretches in ball valve pipe range circular hole, and can rotate and slide in ball valve pipe range circular hole；

The inside of ball valve pipe is equipped with upper ball valve seat and lower ball valve seat, and upper ball valve seat and lower ball valve seat can be in ball valve pipe inner shafts To sliding, the upper end of ball valve pipe is equipped with ball valve pipe shoulder, the connection of ball valve Guan Yuzhong pipe；

The upper end of upper ball valve seat is connect with the lower end of ball valve driving pipe nipple, the lower end of upper ball valve seat and the upper termination of ball valve Touching, ball valve driving pipe nipple is located at the lower section of basket connecting short section, and ball valve drives pipe nipple between basket and middle pipe, Spring is additionally provided between ball valve driving pipe nipple and middle pipe, spring is set on ball valve driving pipe nipple, and the upper end of spring and spring limit Position ring contact, spring retainer ring limits by male-female engagement by middle pipe shoulder, spring retainer ring be located at basket and middle pipe it Between, the lower end of spring contacts with ball valve driving pipe nipple spring shoulder and is withstood by ball valve driving pipe nipple spring shoulder, ball valve driving Pipe nipple spring shoulder withstands spring retainer ring by spring, and ball valve driving pipe nipple spring shoulder is located at the top of ball valve pipe shoulder；

Pressure keeping ball valve overturns sealing mechanism and basket cooperates and realizes ball valve slide downward and overturn 90 °；

The single action mechanism is located at the inside of middle pipe pipe nipple, and is located at the lower section of resilient key pipe nipple, and single action mechanism passes through axis It holds housing to connect with crossover sub, crossover sub is connect with the upper end for adjusting connector, is adjusted and is arranged with regulating mechanism lock on connector The lower end of crossover sub is arranged in tight nut, regulating mechanism locking nut, adjusts the inside that connector is located at connecting tube, adjusts connector Lower end and connecting tube upper end connect, the lower end of connecting tube is connect with sealing mechanism；The sealing mechanism is located at the interior of middle pipe It portion and can be moved axially along middle pipe；

The bindiny mechanism is arranged inside piston tube, and bindiny mechanism includes upper and lower part, and top includes connector, connector Inner cavity chamber, piston, piston cavity room shoulder, piston cavity room pilot hole and resilient pin pull out hole, lower part include bolt positioning tube, First bolt sliding eye, latch spring, slide bolt, spring pressure ring, support spring, insertion connecting rod, connecting rod spring shoulder With the second bolt sliding eye；

The upper end of connector is connect with the lower end with long tube, and the top of connector is located at the inside of support tube, with the upper of long tube The lower end connection of skirt is held and proposes, the lower part with long tube is provided with long tube water outlet, is located at the upper of connector with long tube water outlet Side；The lower end of connector is connect with piston, and connector is provided with connector inner cavity chamber, and the bottom of piston is provided with the elasticity being laterally arranged and inserts Pin pulls out hole, and the lower part that resilient pin pulls out hole is provided with piston cavity room pilot hole and piston cavity room shoulder, and piston cavity room is led Hole is provided with an axial passage, the outer wall of piston cavity room pilot hole is contacted with the inner wall of piston tube, piston cavity room platform Shoulder is located at the top of piston cavity room pilot hole, and the bottom of piston tube is provided with piston tube water outlet, and piston tube water outlet is located at Resilient pin pulls out the lower section in hole, and the lower end of piston cavity room pilot hole is connect with spring pressure ring；

After insertion connecting rod sequentially passes through the axial passage that spring pressure ring and piston cavity room pilot hole 2 are formed, stretch to In the connector inner cavity chamber of connector, the lower end for being inserted into connecting rod is provided with connecting rod spring shoulder, and the lower part for being inserted into connecting rod is arranged There is support spring, support spring is located between spring pressure ring and connecting rod spring shoulder；

The top of insertion connecting rod is provided in the second bolt sliding eye being laterally arranged, the interior setting of the second bolt sliding eye Having is in the bolt positioning tube and slide bolt being laterally arranged, and is provided with the first bolt sliding eye, slide bolt in bolt positioning tube Including the ontology being arranged in the second bolt sliding eye and the extension being arranged in outside insertion connecting rod, the ontology of slide bolt On be arranged with latch spring, the ontology of slide bolt stretches in the first bolt sliding eye and can be horizontal along the first bolt sliding eye To movement, the aperture of latch spring is greater than the aperture of the first bolt sliding eye；

When slide bolt reaches uplink extreme position, the extension of slide bolt stretches to resilient pin and pulls out in hole；Piston When reaching downlink extreme position, piston tube water outlet is located above piston and penetrates through with long tube water outlet.

Further, when the basket is passed down through out of ball valve through-hole, basket, basket are close in ball valve edge It limits ball valve to downwardly turn over, while ball valve is contacted by basket and ball valve is made to head on upper ball valve seat, spring retainer ring upwards By the middle pipe shoulder limit on lower intermediate tube；When basket out of ball valve through-hole upwards lifting come out, ball valve be detached from basket and 90 ° of overturning, when ball valve reaches downlink extreme position, load bearing spring is compressed into lower ball valve seat and contacts with ball valve lower cover.

Further, the lower end of the pressure keeping ball valve overturning sealing mechanism is connected with the flushing being rinsed to basket Mechanism, flushing machine are equipped with outlet passage, and outlet passage is that outer pipe bit and middle pipe bit gap and basket and middle pipe bore Head gap.

Further, the sealing mechanism include fastly slotting check valve pressure measuring tie-in, pressure channel, seal nipple sealing ring, The upper end of seal nipple and seal nipple shoulder, seal nipple is connect with the lower end of accumulator connecting tube, is set in the middle part of seal nipple There is axial pressure channel, slotting check valve pressure measuring tie-in stretches in pressure channel fastly, and seal nipple is arranged on seal nipple Sealing ring, seal nipple two sides are equipped with seal nipple shoulder, and the lower end of seal nipple is connect with the upper end of temperature and pressure instrument connecting tube.

Further, the joint place of the ball valve pipe and upper ball valve seat is equipped with upper ball valve seat sealing ring, ball valve pipe and lower ball The joint place of valve seat is equipped with lower ball valve seat sealing ring；Lower ball valve seat is equipped with load bearing spring and ball valve lower cover, load-bearing from top to bottom Spring upper and lower ends are connect with lower ball valve seat and ball valve lower cover respectively, the upper end of lower ball valve seat and the lower end in contact of ball valve.

Further, the ball valve is contacted between lower ball valve seat to float.

Further, the bullet mechanism for card includes bullet card a, plays card bracket a, off card pipe, water inlet, plays card bracket pipe range pin Hole plays card bracket pipe a, off card pipe rake, and bullet card a setting is indoor in bullet card, and connect with card bracket a is played, the setting of bullet card room In the inner wall of outer pipe assembly, plays card bracket a connection and be arranged inside off card pipe, off card pipe is fixedly connected with spear-head, off card The bottom end of pipe is equipped with the off card pipe rake for coming out bullet card from bullet card room off card, and the side wall of off card pipe is equipped with water inlet Mouthful, it plays card bracket pipe range pin hole and is arranged in inside the lumen for playing card bracket pipe a.

Further, the leading-in device that mentions includes mentioning skirt, proposing skirt long pinhole and the first resilient key, proposes skirt long pinhole The inside for mentioning skirt is set；First resilient key through play card bracket pipe range pin hole and mentioning be fixed at after skirt long pinhole it is de- On card pipe, card bracket pipe range pin hole and the central axis for proposing skirt long pinhole are played on same straight line, skirt is mentioned, plays card bracket It is suit connection between pipe a and off card pipe.

Further, the bullet card suspension mechanism includes playing card bracket b, off card pipe b, bullet card chamber, elastic slice aperture, bullet card chamber Room, plays card bracket pipe nipple and off card pipe rake b at bullet card b；The inside of piston tube is arranged in the top of bullet card suspension mechanism, beats Fishing spearhead is used to drive off card pipe rake b toward close to the direction movement for playing card b, disconnects and middle pipe pipe nipple so that playing card b Contact.

Further, the single action mechanism includes up-thrust bearing, mandrel, copper sheathing, bearing outside, lower thrust-bearing and lock The upper end of tight nut, mandrel is threadedly coupled with the bottom end of resilient key pipe nipple, and bearing outside is set in mandrel, bearing outside and the heart Copper sheathing is equipped between axis, copper sheathing upper and lower ends are respectively equipped with up-thrust bearing and lower thrust-bearing, and the bottom end of mandrel is equipped with lock Tight nut, lower thrust-bearing are located above locking nut.

The invention has the benefit that the present invention has following advantageous effects:

1,90 ° of the ball valve slide downward of notice pressure keeping ball valve overturning sealing mechanism and overturning, ball valve and upper ball valve seat seal The pressure holding effect of ball valve upper area is realized in contact, and basket is located at the dwell region above ball valve at this time, so that in basket Coring sample be in state of pressure keeping, realize the gastight sampling of corer, improve coring success rate；

Moreover, it is achieved that ball valve overturn 90 ° of pressure keeping ball valve overturning sealing mechanism be driven by spring and ball valve pipe nipple come It realizes, so that the structure of pressure keeping ball valve overturning sealing mechanism is greatly simplified, so that using the more simple convenient and reliability of operation It greatly improves, and subsequent maintenance is made also to become more quick and convenient；

2, cooperated together with middle pipe bit by drill bit and carry out core sample coring, using the side of this double drill bit corings Formula allows the invention to adapt to the 4th to be sedimentary formation and basement rock, and application range is wider；

3, by playing the mutual cooperation of mechanism for card and bullet card suspension mechanism, realize that basket is axially solid before salvaging coring Fixed and holding basket single action effect, that is, realize rotary coring, simple and fast；

4, this kind of fragile components of shear pin are not used, and is launching corer by means of bindiny mechanism and is being thrown to The upper and lower part of outer pipe assembly Zuo Kaqianshi bindiny mechanism is not fixed connection, passes through mud hydraulic thrust during coring Realize connection, when salvaging corer after coring, the upper and lower part of bindiny mechanism is fixedly connected, and realizes inner tube assembly b bullet The control and off card of card suspension mechanism, ensure that will not close ball valve in advance before completing coring, and then improve corer Safety, reliability and coring success rate.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is the enlarged diagram in A sections of regions in Fig. 1；

Fig. 3 is the enlarged diagram in B sections of regions in Fig. 1；

Fig. 4 is the enlarged diagram in C sections of regions in Fig. 1；

Fig. 5 is the enlarged diagram in D sections of regions in Fig. 1；

Fig. 6 is the enlarged diagram in E sections of regions in Fig. 1；

Fig. 2 to Fig. 6 is the segmental structure schematic diagram for constituting Fig. 1, and the lower end of the upper end of the lower end connection figure 3 of Fig. 2, Fig. 3 connects The upper end of map interlinking 4, the upper end of the lower end connection figure 5 of Fig. 4, the upper end of the lower end connection figure 6 of Fig. 5；

Fig. 7 is the enlarged diagram in Fig. 3 at A '；

Fig. 8 is the structural schematic diagram of outer pipe assembly；

Fig. 9 is the structural schematic diagram of inner tube assembly；

Figure 10 is the structural schematic diagram of inner tube assembly a；

Figure 11 is the structural schematic diagram of inner tube assembly b；

Figure 12 is to carry out one of status diagram during salvaging off card after the completion of coring (arrival of the first resilient key, which mentions, draws The top of pipe range pin hole)；

Figure 13 is to carry out one of status diagram during salvaging off card after the completion of coring (bullet card suspension mechanism is completed de- Card motion)；

Enlarged diagram in Figure 14 Figure 13 at A；

Figure 15 is one of status diagram in ball valve switching process (basket lifts out from ball valve through-hole)；

Figure 16 is the enlarged diagram in Figure 15 at B；

Figure 17 is the enlarged diagram in Figure 15 at C；

Figure 18 is the enlarged diagram in Figure 15 at D；

Figure 19 is the enlarged diagram in Figure 15 at E；

Figure 20 is A-A1 line schematic cross-sectional view in Fig. 2；

Figure 21 is B-B1 line schematic cross-sectional view in Fig. 6；

Figure 22 is partial structural diagram when slide bolt reaches uplink extreme position；

In figure, the outer pipe assembly of 10-, 20- inner tube assembly, 201- inner tube assembly a, 202- inner tube assembly b, 110- bullet card room, 120- seat ring, 130- centering ring, 140- outer pipe bit, 141- torsion pass convex shoulder, 21- spear-head, 22- bullet mechanism for card, 221- bullet Block a, 222- bullet card bracket a, 223- off card pipe, 224- bullet card bracket pipe range pin hole, 225- water inlet, 226- bullet card bracket pipe a, 227- off card pipe rake, 23- mention leading-in device, 231- proposes skirt long pinhole, 232- mentions skirt, the first resilient key of 233-, 24- are outstanding Link, 25- are living with long tube water outlet, 26- bindiny mechanism, 261- connector, 2611- connector inner cavity chamber, 262- with long tube, 251- Plug, 2621- piston cavity room shoulder, 2622- piston cavity room pilot hole, 2623- resilient pin pull out hole, the positioning of 263- bolt Cylinder, the first bolt of 2631- sliding eye, 264- latch spring, 265- slide bolt, 266- spring pressure ring, 267- support spring, 268- is inserted into connecting rod, 2681- connecting rod spring shoulder, the second bolt of 2682- sliding eye, 27- bullet card suspension mechanism, 271- bullet Card bracket b, 272- off card pipe b, 273- bullet card chamber, the aperture of 274- elastic slice, 275- bullet card chamber, 276- bullet card b, 277- off card pipe Rake b, 28- pedestal block, 29- bullet card bracket pipe nipple, 291- are located shoulder, 292- resilient key slotted hole, the second elasticity of 293- Pin, pipe pipe nipple in 30-, pipe pipe nipple shoulder, 31- single action mechanism, 311- up-thrust bearing, 312- bearing outside, 313- in 301- Copper sheathing, 314- lower thrust-bearing, 315- mandrel, 316- locking nut, 32- crossover sub, 33- regulating mechanism locking nut, 34- Adjust connector, 35- packoff nipple, 351- packoff nipple shoulder, 36- accumulator connecting tube, 37- accumulator, 38- sealing mechanism, 381- inserts check valve pressure measuring tie-in, 382- pressure channel, 383- seal nipple sealing ring, 384- seal nipple shoulder, 385- fastly Seal nipple, 40- non-return valve cavity, 41- ball valve seat, 42- non-return valve, 43- temperature and pressure instrument connecting tube, 44- temperature and pressure test cabinet, 46- basket connecting short section, 47- basket, pipe in 48-, pipe shoulder in 481-, 49- pressure keeping ball valve overturning sealing mechanism, 4901- spring retainer ring, 4902- ball valve driving pipe nipple, 4903- spring, 4904- ball valve drive pipe nipple spring shoulder, 4905- ball Valve pipe shoulder, 4906- upper ball valve seat sealing ring, 4907- upper ball valve seat, 4908- ball valve pipe, 4909- ball valve, 4910- ball valve axis, 4911- ball valve overturn sliding groove, 4912- ball valve overturning driving bolt, 4913- ball valve pipe range circular hole, 4914- ball valve window of tube, Ball valve seat sealing ring under ball valve seat, 4916- under 4915-, 4917- load bearing spring, 4918- ball valve lower cover, 50- piston tube, 501- piston tube water outlet, 51- rinse water inlet, 52- rinses water outlet, 53- torsion pass spline, 54- water outlet, 55- petal and blocks Pipe bit in spring, 56-.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention:

As shown in Fig. 1 to Figure 22, a kind of rotary coring drilling with keep up pressure device of safety type natural gas hydrate, including outer pipe assembly 10 With inner tube assembly 20, said inner tube assembly 20 is mounted on the inside of outer pipe assembly 10, on the inner wall of outer pipe assembly 10 from top to bottom It is successively arranged bullet card room 110, seat ring 120 and centering ring 130, the bottom end of outer pipe assembly 10 is equipped with drill bit；

Said inner tube assembly 20 includes inner tube assembly a 201 and inner tube assembly b 202, and inner tube assembly b 202 is installed on interior It the inside of pipe assembly a 201 and can be moved axially along inner tube assembly a 201, inner tube assembly a 201 includes from top to bottom successively The spear-head 21 of connection, play mechanism for card 22, piston tube 50, middle pipe pipe nipple 30, packoff nipple 35, accumulator connecting tube 36, in Pipe 48 and pressure keeping ball valve overturn sealing mechanism 49；Inner tube assembly b 202 mentions leading-in device 23, company including sequentially connected from top to bottom Connection mechanism 26, single action mechanism 31, crossover sub 32, adjusts connector 34, accumulator connecting tube 36, sealing at bullet card suspension mechanism 27 Mechanism 38, temperature and pressure instrument connecting tube 43, basket connecting short section 46 and basket 47；

Spear-head 21, play mechanism for card 22, piston tube 50, middle pipe pipe nipple 30, packoff nipple 35, accumulator connecting tube 36, Threaded connection or integral structure are all made of between ball valve pipe 4908 on middle pipe 48 and pressure keeping ball valve overturning sealing mechanism 49；It mentions and drawing Between device 23, bindiny mechanism 26 and bullet card suspension mechanism 27 and single action mechanism 31, crossover sub 32, adjust connector 34, store Spiral shell can be all made of between device connecting tube 36, sealing mechanism 38, temperature and pressure instrument connecting tube 43, basket connecting short section 46 and basket 47 Line connection, integral structure or others are fixedly connected with the connection types such as mode, such as stable clamping, snapping, welding；

The pipe nipple outer wall (not shown) of middle pipe bit 56 is contacted with the inner wall of centering ring 130, preferably in sealing contact And drilling fluid cannot pass through；

Mechanism for card 22 is played to include bullet card a 221, play card bracket a 222, off card pipe 223, water inlet 225, play card bracket pipe Long pinhole 224 plays card bracket pipe a 226, off card pipe rake 227, and bullet card a 221 is arranged in bullet card room 110, and with The connection of card bracket a 222 is played, the connection of card bracket a 222 is played and is arranged inside off card pipe 223, off card pipe 223 and spear-head 21 It is fixedly connected, the bottom end of off card pipe 223 is equipped with the off card pipe rake 227 for coming out bullet card from 110 off card of bullet card room, takes off The side wall of card pipe 223 is equipped with water inlet 225, plays card bracket pipe range pin hole 224 and is arranged in the lumen for playing card bracket pipe a 226 Portion；

Mentioning leading-in device 23 includes mentioning skirt 232, proposing skirt long pinhole 231 and the first resilient key 233, proposes skirt long pinhole 231 are arranged in the inside for mentioning skirt 232；

The first resilient key 233 being set in inner tube assembly a 201 is through playing card bracket pipe range pin hole 224 and to mention skirt long It is fixed at after pin hole 231 on off card pipe 223, due to playing card bracket pipe range pin hole 224 and mentioning the center of skirt long pinhole 231 On same straight line, the first resilient key 233 can play card bracket pipe range pin hole 224 and propose skirt long pinhole 315 line of axis simultaneously It is free to slide in 231, it realizes and mentions skirt 232, plays the suit connection between card bracket pipe a 226 and off card pipe 223, to realize It mentions leading-in device 23 and plays the connection of mechanism for card 22；

Mention skirt 232 top be arranged in play card bracket pipe a 226 inside and can along play card bracket pipe a 226 into Row axial movement, the inside of piston tube 50 is arranged in lower part；The top for mentioning skirt 232, which is located at, plays card bracket pipe range pin hole 224 Lower section；

Piston tube 50 is equipped with the piston tube water outlet 501 being obliquely installed, the upper end of piston tube 50 and bullet card bracket pipe a 226 lower end connection, the lower end of piston tube 50 are connect with the upper end of middle pipe pipe nipple 30, and middle pipe pipe nipple 30 is equipped with middle pipe pipe nipple platform Shoulder 301；

The junction for playing card bracket pipe a 226 and piston tube 50 is equipped with hanging ring 24, and hanging ring 24 is located at seat ring 120 On, inner tube assembly 20 hangs the inside for being mounted on outer pipe assembly 10 by hanging ring 24, namely makes entire inner tube assembly 20 Weight is fallen on outer pipe assembly 10；

The bindiny mechanism 26 being arranged in inside piston tube 50 includes upper and lower part, and top includes connector 261, connector inner cavity Room 2611, piston 262, piston cavity room shoulder 2621, piston cavity room pilot hole 2622 and resilient pin pull out hole 2623, lower part Including bolt positioning tube 263, the first bolt sliding eye 2631, latch spring 264, slide bolt 265, spring pressure ring 266, support Spring 267, insertion connecting rod 268, connecting rod spring shoulder 2681 and the second bolt sliding eye 2682；

The upper end of the connector 261 of bindiny mechanism 26 is connect with the lower end with long tube 25, and connector 261 is located at long tube 25 Inside, the upper end with long tube 25 are connect with the lower end for mentioning skirt 232, and the lower part with long tube 25 is provided with long tube water outlet 251, It is located at the top of connector 261 with long tube water outlet 251；The lower end of connector 261 is connect with piston 262, and connector 261 is provided with connector Inner cavity chamber 2611, the bottom of piston 262 are provided with the resilient pin being laterally arranged and pull out hole 2623, and resilient pin pulls out under hole 2623 Portion is provided with piston cavity room pilot hole 2622 and piston cavity room shoulder 2621, piston cavity room pilot hole 2622 present it is narrow under Wide is tubaeform, and each one of left and right is in the inside for being axially disposed within piston tube 50, the two piston cavity room pilot holes in left and right 2622 form an axial passage, and the outer wall of piston cavity room pilot hole 2622 is contacted with the inner wall of piston tube 50, piston cavity Room shoulder 2621 is located at the top of piston cavity room pilot hole 2622, and the bottom of piston tube 50 is provided with piston tube water outlet 501, Piston tube water outlet 501 is contacted with the outer wall of piston cavity room pilot hole 2622, i.e., piston tube water outlet 501 is located at resilient pin The lower section in hole 2623 is pulled out, the lower end of piston cavity room pilot hole 2622 is connect with spring pressure ring 266；

Insertion connecting rod 268 sequentially passes through the axial passage that spring pressure ring 266 and piston cavity room pilot hole 2622 are formed Afterwards, it stretches in the connector inner cavity chamber 2611 of connector 261, the lower end of insertion connecting rod 268 is provided with connecting rod spring shoulder 2681, the lower part of insertion connecting rod 268 is arranged with support spring 267, and support spring 267 is located at spring pressure ring 266 and connecting rod Between spring shoulder 2681, so that the telescopic extensions of support spring 267 are between spring pressure ring 266 and connecting rod spring shoulder 2681 Between；

The top of insertion connecting rod 268 is provided in the second bolt sliding eye 2682 being laterally arranged, the sliding of the second bolt It is provided in hole 2682 in the bolt positioning tube 263 and slide bolt 265 that are laterally arranged, the is provided in bolt positioning tube 263 One bolt sliding eye 2631, slide bolt 265 include that the ontology being arranged in the second bolt sliding eye 2682 and setting are being inserted into Extension outside connecting rod 268, i.e. extension are stretched out from insertion connecting rod 268, are arranged on the ontology of slide bolt 265 slotting Sell spring 264, the ontology of slide bolt 265 stretches in the first bolt sliding eye 2631 and can be along the first bolt sliding eye 2631 transverse shiftings, and the aperture of latch spring 264 is greater than the aperture of the first bolt sliding eye 2631, so that latch spring 264 It cannot stretch in the first bolt sliding eye 2631, and be limited by bolt positioning tube 263, i.e., so that entire latch spring 264 It is respectively positioned in the second bolt sliding eye 2682；

Bullet card suspension mechanism 27 includes playing card bracket b 271, off card pipe b 272, bullet card chamber 273, elastic slice aperture 274, bullet Card chamber 275, plays card bracket pipe nipple 29 and off card pipe rake b 277 at bullet card b 276；

The inside of piston tube 50 is arranged in the top of bullet card suspension mechanism 27, and the inside of middle pipe pipe nipple 30 is arranged in lower part；

The inside of piston tube 50, and the upper end of off card pipe b 272 and insertion connecting rod 268 is arranged in off card pipe b 272 Lower end connection, the lower end of off card pipe b 272 are equipped with for bullet card b 276 to incline from the off card pipe that 275 off card of bullet card chamber comes out Inclined portion b 277, and the inside of middle pipe pipe nipple 30, off card pipe rake b 277 and off card pipe is arranged in off card pipe rake b 277 It is additionally provided with elastic slice aperture 274 between b 272, plays the inside that card bracket b 271 is horizontally installed on off card pipe b 272, plays card bracket b 271 lower sections are equipped with bullet card chamber 273, set that there are two bullet card b 276 below bullet card chamber 273, and the upper end of two bullet card b 276 passes through company Fitting (not shown) is fixed on bullet card chamber 273, and two bullet card b 276 are located in bullet card chamber 275, bullet card chamber 275 On the pedestal block 28 that the lower end of the inside of middle pipe pipe nipple 30, and bullet card b 276 is arranged below, pedestal block 28 is arranged in The inside of pipe pipe nipple 30, bullet card b 276 withstood in opened with certain angle by the convex shoulder (not shown) of middle pipe pipe nipple 30 and Prevent bullet card b 276 is from axially upwardly moving, namely make bullet card suspension mechanism 27 withstood by the convex shoulder of middle pipe pipe nipple 30 and It cannot axially upwardly move；

In the present embodiment, all " upward " each means the upward direction towards spear-head 21, " downward " then refer to by Spear-head 21 is directed downwardly in downward direction；

The lower section of pedestal block 28, which is equipped with, plays card bracket pipe nipple 29, and the top for playing card bracket pipe nipple 29 is located at off card pipe rake The inside of b 277；

In the present embodiment, playing card bracket pipe nipple 29 and playing card bracket b 271 is an overall structure；

It plays and is equipped with the resilient key slotted hole 292 that is axially arranged in card bracket pipe nipple 29, the is equipped in resilient key slotted hole 292 Two resilient keys 293, the second resilient key 293 are fixed at off card through resilient key slotted hole 292 and after playing card bracket pipe nipple 29 On pipe rake b 277, and the second resilient key 293 can be free to slide in resilient key slotted hole 292；

Off card pipe rake b 277, which is located at, to be played card bracket pipe nipple 29 and is located on shoulder 291, so that off card pipe inclines Inclined portion b 277 can be moved axially relatively upward relative to card bracket pipe nipple 29 is played；

The lower part for playing card bracket pipe nipple 29 is located at the inside of middle pipe pipe nipple 30, and is located at the middle pipe pipe nipple of middle pipe pipe nipple 30 On shoulder 301, is withstood and cannot be moved axially downwards by middle pipe pipe nipple 30 so that playing card bracket pipe nipple 29, so that bullet Card suspension mechanism 27 cannot move axially downwards；

The inside of middle pipe pipe nipple 30 is additionally provided with single action mechanism 31, and single action mechanism 31 is located at the lower section for playing card bracket pipe nipple 29；

Single action mechanism 31 includes up-thrust bearing 311, mandrel 315, copper sheathing 313, bearing outside 312, lower thrust-bearing 314 With locking nut 316, the upper end of mandrel 315 is threadedly coupled with the bottom end for playing card bracket pipe nipple 29, and bearing outside 312 is set in the heart On axis 315, copper sheathing 313 is equipped between bearing outside 312 and mandrel 315,313 upper and lower ends of copper sheathing are respectively equipped with lifting force axis 311 and lower thrust-bearing 314 are held, the bottom end of mandrel 315 is equipped with locking nut 316, and lower thrust-bearing 314 is located at locking nut 316 tops；

Single action mechanism 31 is connect by bearing outside 312 with crossover sub 32, and crossover sub 32 is upper with adjusting connector 34 End connection, adjusts and is arranged with regulating mechanism locking nut 33 on connector 34, and regulating mechanism locking nut 33 is arranged in crossover sub 32 lower end adjusts the inside that connector 34 is located at accumulator connecting tube 36, adjusts lower end and the accumulator connecting tube 36 of connector 34 Upper end connection, the lower end of accumulator connecting tube 36 is connect with sealing mechanism 38；

Single action mechanism 31 avoids basket 47 that outer pipe assembly 10 is followed to rotate, and causes core grinding；

Sealing mechanism 38 includes slotting check valve pressure measuring tie-in 381, pressure channel 382, seal nipple sealing ring 383, close fastly Sealing joint 385 and seal nipple shoulder 384,

The upper end of seal nipple 385 is connect with the lower end of accumulator connecting tube 36, and axial direction is equipped in the middle part of seal nipple 385 Pressure channel 382, slotting check valve pressure measuring tie-in 381 stretches in pressure channel 382 fastly, and sealing is arranged on seal nipple 385 Joint sealing circle 383,385 two sides of seal nipple are equipped with seal nipple shoulder 384, and the lower end of seal nipple 385 and temperature and pressure instrument connect The upper end of adapter tube 43 connects, and is preferably threadedly coupled；

Sealing mechanism 38 is located at the inside of accumulator connecting tube 36 and can move axially along accumulator connecting tube 36, close When sealing mechanism 38 reaches uplink extreme position, seal nipple shoulder 384 contacts packoff nipple 35, then sealing mechanism 38 stops upwards It is mobile, when sealing mechanism 38 reaches downlink extreme position, adjusts connector 34 and contact accumulator connecting tube 36, then sealing mechanism 38 stops Only move down；

Non-return valve 42 is connected with below sealing mechanism 38, non-return valve 42 is arranged in non-return valve cavity 40, unidirectionally The inside of seal nipple 385 is arranged in ball valve cavity 40, and setting non-return valve 42 makes air-flow can only be from the bottom up by unidirectional Ball valve 42 flows in the pressure channel 382 of sealing mechanism 38；

The lower end of non-return valve 42 is arranged on ball valve seat 41, and ball valve seat 41 is equipped with axial passage, ball valve seat 41 with it is close Sealing joint 385 is fixedly connected, and ball valve seat 41 is located in temperature and pressure instrument connecting tube 43；

The lower end of temperature and pressure instrument connecting tube 43 is connect with the upper end of basket connecting short section 46, under basket connecting short section 46 End is fixedly connected with the upper end of basket 47, is preferably threadedly coupled, the lower end of basket 47 is connected with for obtaining and fixing The petal of core sample blocks spring 55, and basket 47 is located at the inside of middle pipe 48；

It includes spring retainer ring 4901, ball valve driving pipe nipple 4902, spring 4903, ball that pressure keeping ball valve, which overturns sealing mechanism 49, Valve drives pipe nipple spring shoulder 4904, ball valve pipe shoulder 4905, upper ball valve seat sealing ring 4906, upper ball valve seat 4907, ball valve pipe 4908, ball valve 4909, ball valve overturning driving bolt 4912, ball valve axis 4910, ball valve overturn sliding groove 4911, ball valve pipe range circular hole 4913, ball valve window of tube 4914, lower ball valve seat 4915, lower ball valve seat sealing ring 4916, load bearing spring 4917 and ball valve lower cover 4918；Ball valve 4909 is equipped with ball valve axis 4910 and ball valve overturns sliding groove 4911, and ball valve 4909, which is equipped with, is used for basket 47 The through-hole passed through；

4908 sealing ring of ball valve pipe is successively arranged on ball valve pipe 4908 on inner tube assembly a 201 from top to bottom (in figure not Show), ball valve overturning driving bolt 4912 and ball valve pipe range circular hole 4913；

The upper end of ball valve pipe 4908 is connect with the lower end of middle pipe 48, and the upper end of preferably ball valve pipe 4908 is connected through a screw thread It is connect with the lower end of middle pipe 48, the junction of ball valve pipe 4908 Yu middle pipe 48, ball valve pipe is arranged in 4908 sealing ring of ball valve pipe 4908 hollow inside is equipped with ball valve window of tube 4914, is equipped with ball valve pipe range circular hole 4913 in the middle part of ball valve pipe 4908, is located at ball valve Ball valve overturning driving bolt 4912 in pipe range circular hole 4913 is fixed on the inner wall of ball valve pipe 4908, ball valve overturning driving bolt 4912 stretch in the ball valve overturning sliding groove 4911 on ball valve 4909；

Ball valve 4909 is fixed in the ball valve window of tube 4914 on ball valve pipe 4908 by ball valve axis 4910, ball valve axis 4910 one end connects ball valve 4909, and the other end stretches in ball valve pipe range circular hole 4913, and can be in ball valve pipe range circular hole 4913 It is inside in axial direction free to slide；

The inside of ball valve pipe 4908 is equipped with upper ball valve seat 4907 and lower ball valve seat 4915, ball valve pipe 4908 and upper ball valve seat 4907 joint place is equipped with upper ball valve seat sealing ring 4906, and ball valve pipe 4908 and the joint place of lower ball valve seat 4915 are equipped with lower ball valve Seat sealing ring 4916, by the way that upper ball valve seat sealing ring 4906 to be arranged between upper ball valve seat 4907 and the inner wall of ball valve pipe 4908 Gap so that formed between upper ball valve seat 4907 and ball valve pipe 4908 it is in sealing contact, similarly, by by lower ball valve seat sealing ring 4916 The inner wall gap of lower ball valve seat 4915 and ball valve pipe 4908 is set, so that being formed between lower ball valve seat 4915 and ball valve pipe 4908 In sealing contact, the upper end of ball valve pipe 4908 is equipped with ball valve pipe shoulder 4905, and the middle part of ball valve pipe 4908 is by male-female engagement in Pipe 48 contacts and withstands middle pipe 48 and is preferably threadedly coupled along with the lower part of ball valve pipe 4908 is connect with middle pipe 48, it is ensured that in Pipe 48 and the connection of ball valve pipe 4908 are stronger；

The upper end of upper ball valve seat 4907 is connect with the lower end of ball valve driving pipe nipple 4902, the upper termination of lower end and ball valve 4909 Touching, ball valve driving pipe nipple 4902 is located at the lower section of basket connecting short section 46, and ball valve driving pipe nipple 4902 is located at basket 47 Between middle pipe 48, is driven in ball valve and be additionally provided with spring 4903 between pipe nipple 4902 and middle pipe 48, spring 4903 is set in ball valve It drives on pipe nipple 4902, the upper end of spring 4903 contacts with spring retainer ring 4901 and pushed down by spring retainer ring 4901, i.e. bullet The upper limit position that spring 4903 opens is limited by spring retainer ring 4901, and spring retainer ring 4901 is by male-female engagement by middle pipe platform Shoulder 481 limits, and then is compressed spring retainer ring 4901 by spring retainer ring 4901, and spring retainer ring 4901 is located at rock core Between pipe 47 and middle pipe 48, the lower end of spring retainer ring 4901 contacts with ball valve driving pipe nipple spring shoulder 4904 and is driven by ball valve Dynamic pipe nipple spring shoulder 4904 is withstood, and ball valve driving pipe nipple spring shoulder 4904 contacts with spring retainer ring 4901 and withstands spring Stop collar 4901, ball valve drive pipe nipple spring shoulder 4904 that can drive the outside casting lug thereon of pipe nipple 4902 for ball valve or drive with ball valve The block that dynamic pipe nipple 4902 is fixedly connected, ball valve driving pipe nipple spring shoulder 4904 are located at the top of ball valve pipe shoulder 4905；

By the way that the setting of spring 4903 is driven between pipe nipple spring shoulder 4904 in spring retainer ring 4901 and ball valve, so that Spring 4903 is in compressive state, and ball valve pipe shoulder 4905 is located between ball valve driving pipe nipple 4902 and middle pipe 48, and in upper ball The top of valve seat 4907；

Lower ball valve seat 4915 is equipped with load bearing spring 4917 and ball valve lower cover 4918, about 4917 load bearing spring from top to bottom Both ends are connect with lower ball valve seat 4915 and ball valve lower cover 4918 respectively, the upper end of lower ball valve seat 4915 and the lower end of ball valve 4909 Contact；

Load bearing spring 4917 realizes that ball valve 4909 is contacted with the floating of lower ball valve seat 4915；

It is connect by the upper end of ball valve pipe 4908 with the lower end of middle pipe 48, realizes pressure keeping ball valve overturning sealing mechanism 49 in The connection of pipe 48, the spring 4903 under compressive state pass through ball valve and drive pipe nipple 4902 that pressure keeping ball valve is pushed to overturn sealing mechanism 49 4909 slide downward of ball valve and overturn 90 °.

When specifically used, as shown, before also non-coring and salvaging, namely coring peace is being carried out using the present invention When dress, basket 47 is passed down through out of ball valve 4909 through-hole, and basket 47 is close to ball valve 4909, and basket 47 is installed It afterwards, cannot be up over bullet card room 110 and bullet card suspension mechanism since bullet mechanism for card 22 is limited in bullet card room 110 27 are limited in middle pipe pipe nipple 30 and cannot cross middle pipe pipe nipple 30, so that inner tube assembly b 202 at this time is unable to axis It is held axially fixed to movement so that basket 47 cannot move axially；Ball valve 4909 is by the bullet under compressive state Spring 4903 is equivalent to by the thrust that ball valve drives pipe nipple 4902 to transmit since ball valve 4909 at this time is close to by basket 47 Basket 47 gives 4,909 1 lateral resistances of ball valve, so that ball valve 4909 will not be downward because of the thrust given by spring 4903 Overturning, i.e., basket 47 limits ball valve 4909 and downwardly turns over, while ball valve 4909 is contacted by basket 47 and makes ball valve 4909 head on upper ball valve seat 4907 upwards, and upper ball valve seat 4907 heads on ball valve upwards and drives pipe nipple 4902 to moving up, and ball valve drives Ball valve driving pipe nipple spring shoulder 4904 on pipe nipple 4902 makes spring retainer ring 4901 by middle pipe also accordingly to moving up Middle pipe shoulder 481 limit on 48, so that the elastic potential energy increase by compression of spring 4903；And when coring is completed and carried out After salvaging, as shown in figure and figure, after basket 47 lifts out upwards out of ball valve 4909 through-hole, basket 47 gives ball valve 4909 lateral resistance disappears, i.e., basket 47 no longer limits ball valve 4909 and downwardly turns over, due to the elastic potential energy of spring 4903 Enough, make ball valve 4909 at this time spring 4903 to thrust under and it is whole moved down along ball valve pipe range circular hole 4913, when The ball valve axis 4910 connecting with ball valve 4909 touches ball valve overturning driving bolt 4912, and the thrust generated by spring 4903 pushes away Dynamic ball valve overturning driving bolt 4912 overturns sliding groove by the ball valve on ball valve 4909 since ball valve overturns driving bolt 4912 4911 withstand, so that ball valve overturning driving bolt 4912 gives a torque to ball valve 4909, realize 4909 slide downward of ball valve And 90 ° are overturn, during ball valve 4909 glides, ball valve 4909 pushes down on lower ball valve seat 4915, and the lower compression of ball valve seat 4915 is held Weight spring 4917 is to moving down until lower ball valve seat 4915 is contacted with ball valve lower cover 4918 namely ball valve 4909 reaches time limit by row When position, lower ball valve seat 4915 is contacted with ball valve lower cover 4918；

By above operation, pressure keeping ball valve overturns sealing mechanism 49 and basket 47 cooperates realize ball valve 4909 to Lower slider simultaneously overturns 90 °；

Ball valve 4909 and upper ball valve seat 4907 are in sealing contact, realize the pressure holding effect of 4909 upper area of ball valve, at this time rock Heart pipe 47 is located at the dwell region of 4909 top of ball valve, so that the coring sample in basket 47 is in state of pressure keeping, realization is taken The gastight sampling of heart device.

Further, energy storage room, and energy storage room position are equipped between the top of sealing mechanism 38 below adjusting connector 34 In the inside of accumulator connecting tube 36, accumulator 37, accumulator 37 and the fastly slotting company of check valve pressure measuring tie-in 381 are equipped in energy storage room It connects, accumulator 37 is for maintaining pressure steady.

Further, temperature and pressure test cabinet is equipped between the lower section of ball valve seat 41 and the top of basket connecting short section 46 44, and temperature and pressure test cabinet 44 is located at the inside of temperature and pressure instrument connecting tube 43, temperature and pressure test cabinet 44 is provided with for measuring temperature and pressure parameter Equipment.

Further, the lower end of pressure keeping ball valve overturning sealing mechanism 49 is connected with the flushing being rinsed to basket 47 Mechanism (not shown), flushing machine are equipped on inner tube assembly a 201, and flushing machine avoids the landwaste etc. on basket 47 Pollutant is brought into corer, is especially brought into dwell region, and then influence pressure holding effect, it could even be possible to cannot be achieved Pressure maintaining；

Flushing machine include rinse water inlet 51 and rinse water outlet 52, the drilling fluid in high pressure from rinse water inlet 51 After, high-voltage high-speed flushing is carried out to the landwaste on basket 47, is discharged after drilling fluid following from flushing water outlet 52, washer Structure is connect with the lower thread of ball valve pipe 4908, and is connect with the lower end of ball valve lower cover 4918.

In the present embodiment, flushing machine is set there are two outlet passage, respectively outer pipe bit 140 and middle pipe bit 56 The second exhalant canal that the gap of the first outlet passage and basket 47 and middle pipe bit 56 that gap is constituted is constituted, drilling fluid Enter in inner tube assembly b 202 from water inlet 225, then flowed out from long tube water outlet 251, and enters inner tube assembly a 201 Between inner tube assembly b 202, then flowed out from piston tube water outlet 501, and enter outer tube assembly 10 and inner tube assembly 20 it Between region, due to centering ring 130 and flushing machine be it is in sealing contact, between outer pipe assembly 10 and inner tube assembly 20 between Drilling fluid through flushing water inlet 51 enter flushing machine, from rinse water inlet 51 enter flushing machine in drill-in fluid all the way It is discharged, i.e., is discharged from outer pipe bit 140 and the gap of middle pipe bit 56 from the first outlet passage, another way is from the second outlet passage Discharge is discharged from the gap of basket 47 and middle pipe bit 56, common to realize drilling fluid by flushing machine to basket 47 Flushing.

In the present embodiment, middle pipe bit 56 connect with flushing machine and is in below flushing machine, and middle pipe bit 56 is Drill bit made of five wing carbide scraper drill bits or PDC drill bit or other materials, middle pipe bit 56 by with washer Structure connection, flushing machine and ball valve pipe 4908 connection and ball valve pipe 4908 connect with middle pipe 48, thus realization in pipe bit 56 and Middle pipe 48 connects, and then pipe bit 56 is connect with inner tube assembly 20 in realization, i.e., inner tube assembly 20 is able to drive middle pipe bit 56 Rotation.

In the present embodiment, outer pipe bit 140 is equipped with inwardly projecting torsion pass convex shoulder 141, torsion pass convex shoulder 141 and setting Outwardly projecting torsion pass spline 53 is mutually twisted on middle pipe bit 56, to realize that outer pipe bit 140 is passed to middle pipe bit 56 Torque delivery and in driving the mutual cooperation of pipe bit 56 rotates together so that outer pipe bit 140 and middle pipe bit 56 cooperate together into Row core sample coring allows the invention to adapt to hardpan, application range is more by the way of this double drill bit corings Extensively；Petal blocks and is equipped with certain gap between spring 55 and middle pipe bit 56, and petal blocks the internal diameter of spring 55 greater than middle pipe bit 56 Internal diameter so that during turning round coring, middle pipe bit 56 turns round drilling depth, and petal blocks spring 55 and do not rotate and keep single action, has Enter petal conducive to the core sample that the revolution of middle pipe bit 56 is modified to block in spring 55 and basket 47.

When specifically used, when inner tube assembly 20 is successfully mounted on outer 10 inside of pipe assembly, at this time: playing on mechanism for card 22 Bullet card a 221 be in open configuration and be limited in bullet card room 110 so that play mechanism for card 22 limited by bullet card room 110 And it cannot axially upwardly move；

Bullet card suspension mechanism 27 is in open configuration and by middle pipe pipe nipple by the bullet card b 276 on bullet card suspension mechanism 27 30 limitations, that is, the shoulder contact of bullet card b 276 and middle pipe pipe nipple 30 after opening and be locked, thus by bullet card suspension mechanism 27 limit and prevent bullet card suspension mechanism 27 from axially upwardly moving；Entire inner tube assembly 20 by hanging ring 24 due to being limited It cannot firmly move axially downwards, inner tube assembly 20 reaches downlink extreme position, along with bullet mechanism for card 22 and bullet card hang machine Structure 27 limits inner tube assembly 20, and prevents inner tube assembly 20 from axially upwardly moving.

Before carrying out salvaging coring, the upper and lower part of bindiny mechanism 26 is to connect, when 20 success of inner tube assembly After being mounted on outer 10 inside of pipe assembly, start to carry out salvaging coring process: firstly, injecting in inner tube assembly 20 by slush pump Mud, mud enter inner tube assembly 20 from water inlet 225, and then, mud with long tube water outlet 251 after flowing out under lower impact The piston 262 of side, the hydraulic of mud generation push down on piston 262, and piston 262 passes through spring pressure ring 266 for support spring 267 Compression downwards, so that insertion 268 axis of connecting rod does relative to piston cavity room pilot hole 2622 and moves relatively upward, thus So that slide bolt 265 slides axially upwards along piston cavity room pilot hole 2622, piston cavity room pilot hole 2622 is headed on Slide bolt 265 is retracted to the inside of the second bolt sliding eye 2682, and the ontology of slide bolt 265 is to the first bolt sliding eye Sliding in 2631, so that latch spring 264 be compressed；When 265 axis of slide bolt moves upwardly on piston cavity room shoulder 2621 Fang Hou, resilient pin, which pulls out hole 2623, to be continued to move down, and resilient pin pulls out the lower section that hole 2623 is located at piston tube water outlet 501, thus So that piston tube water outlet 501 and piston tube 50 and between long tube 25 chamber penetrate through so that piston tube water outlet 501 It is penetrated through with long tube water outlet 251, forms mud circulation canal, so that the mud inside inner tube assembly 20 is by matching long tube Water outlet 251 flows out in the region between outer pipe assembly 10 and inner tube assembly 20 from piston tube water outlet 501, so that inner tube is total At the hydraulic decline that the mud in 20 generates, the stopping of piston 262 is moved axially downwards, and resilient pin pulls out hole 2623 and reaches at this time When limit by row position, so that the extension resilient pin of slide bolt 265 pulls out in hole 2623, so that bindiny mechanism 26 is upper Portion becomes to be fixedly connected with state from contact condition with lower part；

After the upper and lower part of bindiny mechanism 26 becomes to be fixedly connected, spear-head 21 drives off card pipe 223 and off card The first resilient key 233 on pipe 223 is axially upwardly moved along skirt long pinhole 231 and bullet card bracket pipe range pin hole 224 is mentioned, and So that the first resilient key 233 goes upward to the top that contact proposes skirt long pinhole 231, and then, under the drive of off card pipe 223, the One resilient key 233 continues on bullet card bracket pipe range pin hole 224 and axially upwardly moves, and axially upwardly moves with skirt 232 is mentioned It is dynamic, so that spear-head 21 is axially upwardly moved by playing mechanism for card 22 with leading-in device 23 is mentioned；

Before the contact to the upper end for playing card bracket pipe range pin hole 224 of the first resilient key 233, the first resilient key 233 passes through The insertion connecting rod 268 for mentioning skirt 232 and bindiny mechanism 26 for mentioning leading-in device 23 drives off card pipe b 272 to move up, off card Pipe b 272 drives off card pipe rake b 277 axially upwardly to move, and off card pipe rake b 277 drives and off card pipe rake b Second resilient key 293 of 277 connections is axially upwardly moved along resilient key slotted hole 292, until the second resilient key 293 contacts bullet Property pin slotted hole 292 top, while the top of 293 contact resilient pin slotted hole 292 of the second resilient key, the inclination of off card pipe Portion b 277 also touches bullet card b 276, continues that off card pipe rake b 277 is driven axially upwardly to move in off card pipe b 272 Under, so that contact bullet card b 276, which is disconnected, that is to say that spear-head 21 passes through with the contact of middle pipe pipe nipple 30, completion off card movement Off card pipe b 272 is driven to move up, off card pipe b 272 drives off card pipe rake b 277 axially upwardly to move, and off card pipe inclines Inclined portion b 277 touches bullet card b 276, so that bullet card b 276 is toward contract without in open configuration, bullet card b 276 is broken It opens and is realized with the contact of the convex shoulder of middle pipe pipe nipple 30 so that bullet card b 276 can be moved toward the direction far from middle pipe pipe nipple Spear-head drives bullet card suspension mechanism to move toward the direction far from middle pipe pipe nipple, completes final off card；

It drives off card pipe rake b 277 axially upwardly to move in off card pipe b 272 and touches 276 this mistake of bullet card b Cheng Zhong is that off card pipe rake b 277 is moved toward close to the direction for playing card b 276；

Then, move entire bullet card suspension mechanism 27 axially upwardly, so that bullet card suspension mechanism 27 is logical It crosses the second resilient key 293 single action mechanism 31, sealing mechanism 38, basket 47 and petal is successively driven to block spring 55 and axially upwardly move It is dynamic；

Spear-head 21 by off card pipe 223 continue band move card suspension mechanism 27, single action mechanism 31, sealing mechanism 38, Basket 47 and petal block spring 55 and axially upwardly move, and basket 47 and petal block spring 55 and continue up axial movement, until close The seal nipple shoulder 384 of sealing mechanism 38 contacts the packoff nipple shoulder 351 of packoff nipple 35 and stops moving up, Ye Jiyan When heart pipe 47 reaches uplink extreme position, seal nipple shoulder 384 contacts packoff nipple shoulder 351, as shown in the figure；

Before off card pipe rake 227 contacts bullet card a 221, basket 47 and petal block spring 55 prior to from ball valve 4909 Through-hole in upwards lifting come out, thus by basket 47 to ball valve 4909 lateral resistance disappear, i.e., basket 47 does not hinder Interception valve 4909 downwardly turns over, and ball valve 4909 is whole along ball valve pipe range circular hole 4913 under the thrust that spring 4903 is given at this time It moves down, during ball valve 4909 moves down, ball valve is promoted to overturn the ball valve fixed on ball valve pipe 4908 of sliding groove 4911 The compound motion that 4909 overturning drive pins are slided and rotated, while giving ball valve 4909 and overturning torque and drive ball valve 4909 90 ° of overturning；

In 4909 slide downward of ball valve and after overturning 90 °, spear-head 21 drives off card pipe rake b 277 past close to bullet The direction of card b 276 moves, so that off card pipe rake 227 contacts bullet card a 221, so that bullet card a 221 is disconnected and bullet card Off card movement is completed in the contact of room 110；After completing off card movement, spear-head 21 drives off card pipe 223 to continue up axial shifting It is dynamic, entire inner tube assembly 20 is pulled out out of outer pipe assembly 10, namely after inner tube assembly b 202 completes off card, it is interior Pipe assembly b 202 could axially upwardly be moved under the drive of spear-head 21, and then take out the core sample of inner tube assembly 20, Complete the whole process of coring.

What ball valve 4909 was contacted with upper ball valve seat 4907 is contacted with upper bit to seal nipple shoulder 384 with packoff nipple 35 With the region between lower portion for stable dwell region, the basket 47 equipped with core sample is located in dwell region, guarantor It has demonstrate,proved rock core to be in dwell region, so that the state of pressure keeping of rock core under high pressure, realizes coring drilling with keep up pressure.

The bindiny mechanism 26 before inner tube assembly 20 is thrown to bottom hole during lifting and launching bottom hole, bindiny mechanism 26 Upper and lower part be it is separated, only during coring, when drilling mud recycle push piston move down after, be just able to achieve cunning The extension of dynamic bolt 265 stretches to resilient pin and pulls out in hole 2623, and the top of bindiny mechanism 26 and lower part are become fixed company It connects.It is achieved that during being lifted before being thrown to bottom hole and launching bottom hole, due to the disconnection of bindiny mechanism 26, spear-head 21 The off card pipe b of inner tube assembly b 202 is not lifted, thus inner tube assembly b 202 not off card, basket from inner tube assembly a 201 47 do not move up so that basket 47 not out of ball valve 4909 through-hole 4909 upwards lifting come out, guarantee ball valve 4909 do not taking It downwardly turns over, avoids not yet completing before coring and accident that ball valve 4909 is closed in advance occurs in advance before the heart.

For those skilled in the art, it can make other each according to the above description of the technical scheme and ideas Kind is corresponding to be changed and deforms, and all these change and deform the protection model that all should belong to the claims in the present invention Within enclosing.

Claims (10)

1. a kind of rotary coring drilling with keep up pressure device of safety type natural gas hydrate, it is characterised in that: including outer pipe assembly and be mounted on The bottom end of inner tube assembly inside outer pipe assembly, outer pipe assembly is equipped with drill bit；

Said inner tube assembly includes inner tube assembly a and inner tube assembly b, and inner tube assembly a includes sequentially connected salvaging from top to bottom Spearhead plays mechanism for card, piston tube, middle pipe pipe nipple, packoff nipple, accumulator connecting tube, middle pipe and pressure keeping ball valve overturning sealer Structure；Inner tube assembly b include it is sequentially connected from top to bottom mention leading-in device, bindiny mechanism, bullet card suspension mechanism, single action mechanism, turn Changing-over head adjusts connector, accumulator connecting tube, sealing mechanism, temperature and pressure instrument connecting tube, basket connecting short section and basket；Bullet The lower part of card suspension mechanism is installed in middle pipe pipe nipple, and spear-head is used to drive bullet card suspension mechanism toward separate middle pipe pipe nipple Direction movement；Inner tube assembly b is axially fixed in inside inner tube assembly a by bullet card suspension mechanism, and when being in off card state, It can axially upwardly be moved along inner tube assembly a, wherein the off card state are as follows: bullet card suspension mechanism and middle pipe pipe nipple are detached from；

The bullet mechanism for card and bullet card suspension mechanism cooperate, so that basket is held axially fixed before salvaging coring；

The basket is located inside middle pipe；

The pressure keeping ball valve overturning sealing mechanism includes spring retainer ring, ball valve driving pipe nipple, spring, ball valve driving pipe nipple spring Shoulder, ball valve pipe shoulder, upper ball valve seat sealing ring, upper ball valve seat, ball valve pipe, ball valve, ball valve overturning driving bolt, ball valve axis, Ball valve overturns sliding groove, ball valve pipe range circular hole, ball valve window of tube, lower ball valve seat, lower ball valve seat sealing ring, load bearing spring and ball valve Lower cover；Ball valve is equipped with ball valve axis and ball valve overturns sliding groove, and ball valve is equipped with the through-hole passed through for basket；

The upper end of ball valve pipe is connect with the lower end of middle pipe, and the junction of ball valve Guan Yuzhong pipe, ball valve is arranged in ball valve seal of tube circle The hollow inside of pipe is equipped with ball valve window of tube, is equipped with ball valve pipe range circular hole, the ball in ball valve pipe range circular hole in the middle part of ball valve pipe Valve overturning driving bolt is fixed on ball valve pipe, and ball valve overturning driving bolt stretches in the overturning sliding groove of the ball valve on ball valve；

Ball valve is fixed in the ball valve window of tube on ball valve pipe by ball valve axis, and one end of ball valve axis connects ball valve, another End stretches in ball valve pipe range circular hole, and can rotate and slide in ball valve pipe range circular hole；

The inside of ball valve pipe is equipped with upper ball valve seat and lower ball valve seat, and upper ball valve seat and lower ball valve seat can be sliding in ball valve inner axial tube Dynamic, the upper end of ball valve pipe is equipped with ball valve pipe shoulder, the connection of ball valve Guan Yuzhong pipe；

The upper end of upper ball valve seat is connect with the lower end of ball valve driving pipe nipple, the lower end of upper ball valve seat and the upper-end contact of ball valve, ball Valve driving pipe nipple is located at the lower section of basket connecting short section, and ball valve drives pipe nipple between basket and middle pipe, in ball valve Spring is additionally provided between driving pipe nipple and middle pipe, spring is set on ball valve driving pipe nipple, the upper end of spring and spring retainer ring Contact, spring retainer ring are limited by male-female engagement by middle pipe shoulder, and spring retainer ring is between basket and middle pipe, bullet The lower end of spring contacts with ball valve driving pipe nipple spring shoulder and is withstood by ball valve driving pipe nipple spring shoulder, and ball valve drives pipe nipple bullet Spring shoulder withstands spring retainer ring by spring, and ball valve driving pipe nipple spring shoulder is located at the top of ball valve pipe shoulder；

Pressure keeping ball valve overturns sealing mechanism and basket cooperates and realizes ball valve slide downward and overturn 90 °；

The single action mechanism is located at the inside of middle pipe pipe nipple, and is located at the lower section of resilient key pipe nipple, and single action mechanism passes through outside bearing Set is connect with crossover sub, and crossover sub is connect with the upper end for adjusting connector, is adjusted and is arranged with regulating mechanism locking screw on connector The lower end of crossover sub is arranged in mother, regulating mechanism locking nut, adjusts the inside that connector is located at connecting tube, adjusts under connector End is connect with the upper end of connecting tube, and the lower end of connecting tube is connect with sealing mechanism；The sealing mechanism be located at the inside of middle pipe and It can be moved axially along middle pipe；

The bindiny mechanism is arranged inside piston tube, and bindiny mechanism includes upper and lower part, and top includes connector, connector inner cavity Room, piston, piston cavity room shoulder, piston cavity room pilot hole and resilient pin pull out hole, and lower part includes bolt positioning tube, first Bolt sliding eye, latch spring, slide bolt, spring pressure ring, support spring, insertion connecting rod, connecting rod spring shoulder and the Two bolt sliding eyes；

The upper end of connector connect with the lower end of long tube, and the top of connector is located at the inside of support tube, the upper end with long tube and The lower end connection of skirt is proposed, the lower part with long tube is provided with long tube water outlet, and the top of connector is located at long tube water outlet；It connects The lower end of head is connect with piston, and connector is provided with connector inner cavity chamber, and the bottom of piston is provided with the resilient pin being laterally arranged and pulls out Hole, the lower part that resilient pin pulls out hole are provided with piston cavity room pilot hole and piston cavity room shoulder, piston cavity room pilot hole It is provided with an axial passage, the outer wall of piston cavity room pilot hole is contacted with the inner wall of piston tube, piston cavity room shoulder position In the top of piston cavity room pilot hole, the bottom of piston tube is provided with piston tube water outlet, and piston tube water outlet is located at elasticity Bolt pulls out the lower section in hole, and the lower end of piston cavity room pilot hole is connect with spring pressure ring；

After insertion connecting rod sequentially passes through the axial passage that spring pressure ring and piston cavity room pilot hole 2 are formed, connector is stretched to Connector inner cavity chamber in, the lower end for being inserted into connecting rod is provided with connecting rod spring shoulder, and the lower part for being inserted into connecting rod is arranged with branch Spring is supportted, support spring is located between spring pressure ring and connecting rod spring shoulder；

The top of insertion connecting rod is provided in the second bolt sliding eye for being laterally arranged, is provided in the second bolt sliding eye and is in The bolt positioning tube and slide bolt being laterally arranged are provided with the first bolt sliding eye in bolt positioning tube, and slide bolt includes The ontology that is arranged in the second bolt sliding eye and the extension being arranged in outside insertion connecting rod cover on the ontology of slide bolt Equipped with latch spring, the ontology of slide bolt is stretched in the first bolt sliding eye and can laterally be moved along the first bolt sliding eye Dynamic, the aperture of latch spring is greater than the aperture of the first bolt sliding eye；

When slide bolt reaches uplink extreme position, the extension of slide bolt stretches to resilient pin and pulls out in hole；Piston reaches When downlink extreme position, piston tube water outlet is located above piston and penetrates through with long tube water outlet.

2. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: when described Basket is passed down through out of ball valve through-hole, and basket is close at ball valve edge, and basket limits ball valve and downwardly turns over, simultaneously Ball valve is contacted by basket and ball valve is made to head on upper ball valve seat upwards, and spring retainer ring is limited by the middle pipe shoulder on lower intermediate tube Position；When lifting comes out basket upwards out of ball valve through-hole, ball valve is detached from basket and overturns 90 °, and ball valve reaches downlink pole When extreme position, load bearing spring is compressed into lower ball valve seat and contacts with ball valve lower cover.

3. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: the guarantor The lower end of pressure ball valve overturning sealing mechanism is connected with the flushing machine being rinsed to basket, and flushing machine is equipped with water flow Road, outlet passage are outer pipe bit and middle pipe bit gap and basket and middle pipe bit gap.

4. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: described close Sealing mechanism includes inserting check valve pressure measuring tie-in, pressure channel, seal nipple sealing ring, seal nipple and seal nipple shoulder fastly, The upper end of seal nipple is connect with the lower end of accumulator connecting tube, and axial pressure channel is equipped in the middle part of seal nipple, fast slotting single It is stretched in pressure channel to valve pressure measuring tie-in, seal nipple sealing ring is arranged on seal nipple, seal nipple two sides are equipped with The lower end of seal nipple shoulder, seal nipple is connect with the upper end of temperature and pressure instrument connecting tube.

5. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: the ball The joint place of valve pipe and upper ball valve seat is equipped with upper ball valve seat sealing ring, and ball valve pipe and the joint place of lower ball valve seat are equipped with lower ball valve seat Sealing ring；Lower ball valve seat is equipped with load bearing spring and ball valve lower cover from top to bottom, load bearing spring upper and lower ends respectively with lower ball valve Seat is connected with ball valve lower cover, the upper end of lower ball valve seat and the lower end in contact of ball valve.

6. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1 or 5, it is characterised in that: institute Ball valve is stated to contact between lower ball valve seat to float.

7. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: the bullet Mechanism for card, which includes bullet card a, plays card bracket a, off card pipe, water inlet, play card bracket pipe range pin hole, plays card bracket pipe a, off card pipe inclines Inclined portion, bullet card a setting are indoor in bullet card, and connect with card bracket a is played, and the inner wall of outer pipe assembly is arranged in bullet card room, plays Kato Frame a connection is arranged inside off card pipe, and off card pipe is fixedly connected with spear-head, the bottom end of off card pipe be equipped be used for by bullet card from The side wall of the off card pipe rake that bullet card room off card comes out, off card pipe is equipped with water inlet, plays the setting of card bracket pipe range pin hole and exists Inside the lumen for playing card bracket pipe a.

8. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: described to mention Leading-in device includes mentioning skirt, proposing skirt long pinhole and the first resilient key, proposes skirt long pinhole and the inside for mentioning skirt is arranged in；First Resilient key is fixed on off card pipe after playing card bracket pipe range pin hole and proposing skirt long pinhole, plays card bracket pipe range pin hole With propose skirt long pinhole central axis on same straight line, mention skirt, play between card bracket pipe a and off card pipe as set load It connects.

9. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: the bullet Card suspension mechanism include play card bracket b, off card pipe b, bullet card chamber, elastic slice aperture, bullet card chamber, bullet card b, play card bracket pipe nipple and Off card pipe rake b；The inside of piston tube is arranged in the top of bullet card suspension mechanism, and spear-head is for driving off card pipe to tilt Portion b is disconnected and the contact of middle pipe pipe nipple toward close to the direction movement for playing card b so that playing card b.

10. the rotary coring drilling with keep up pressure device of safety type natural gas hydrate according to claim 1, it is characterised in that: described Single action mechanism includes up-thrust bearing, mandrel, copper sheathing, bearing outside, lower thrust-bearing and locking nut, the upper end of mandrel and bullet Property pin pipe nipple bottom end be threadedly coupled, bearing outside is set in mandrel, copper sheathing is equipped between bearing outside and mandrel, on copper sheathing Lower both ends are respectively equipped with up-thrust bearing and lower thrust-bearing, and the bottom end of mandrel is equipped with locking nut, and lower thrust-bearing is located at Above locking nut.