CN207194856U - A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool - Google Patents

A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool Download PDF

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Publication number
CN207194856U
CN207194856U CN201720930861.9U CN201720930861U CN207194856U CN 207194856 U CN207194856 U CN 207194856U CN 201720930861 U CN201720930861 U CN 201720930861U CN 207194856 U CN207194856 U CN 207194856U
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China
Prior art keywords
drilling
assembly
spring
pressure
steel ball
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Withdrawn - After Issue
Application number
CN201720930861.9U
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Chinese (zh)
Inventor
许本冲
杨泽英
冯起赠
宋志彬
和国磊
刘家誉
刘晓林
齐力强
王跃伟
朱芝同
马汉臣
秦如雷
杜垚森
王嘉瑞
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Institute of Exploration Technology Chinese Academy of Geological Sciences
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Institute of Exploration Technology Chinese Academy of Geological Sciences
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Priority to CN201720930861.9U priority Critical patent/CN207194856U/en
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Withdrawn - After Issue legal-status Critical Current
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Abstract

A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, belongs to drilling equipment technical field, and it matches with rope salvaging core-drilling technique, including inner tube assembly and outer pipe assembly;The outer pipe assembly is the cavity structure of up/down perforation, and its upper end is connected with drilling rod, and lower end sets drill bit;Said inner tube assembly is placed in outer pipe assembly cavity, basket is set in the lower end of inner tube assembly, and set jump ring and clip spring seat in basket lower end;It is particular in that:It is additionally provided with pressure compensating system, the pressure compensating system is provided with pressurize cap assembly, the pressurize cap assembly matches with clip spring seat in inner tube assembly, gas hydrates rock core from bottom hole be transferred on the rig of seabed when, the sealing of basket lower end is realized in pressurize cap assembly and clip spring seat grafting.The core sample obtained by the utility model, can at utmost restore seabed mineral occurrence condition, and foundation is provided to improve exploitation of gas hydrates technology.

Description

A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool
Technical field
A kind of coring drilling with keep up pressure drilling tool is the utility model is related to, especially a kind of sea bed gas hydrate rock core coring drilling with keep up pressure Drilling tool, belong to drilling equipment technical field.
Background technology
Gas hydrates (namely combustible ice) are described as the clean energy resource in future, the replacer of oil, and it has reserves Greatly, the advantages that calorific value is high, discharge is low, pollution-free.Gas hydrates are divided into land-based area and marine site is distributed two kinds, the distribution model in seabed Enclose more much bigger than land.It is dispersed with a large amount of gas hydrates at China South Sea and Area of The East China Sea, between 2002-2015, I State carried out in succession in the Xisha of THE NORTHERN SLOPE OF SOUTH CHINA SEA, Dongsha, refreshing fox and the fine jade southeast marine site natural gas hydrate resources investigation and Research work, and a series of exploration results and theoretical breakthrough are achieved, China is in gas hydrates exploitation in international neck First status.
At present, important technology probe phase of the exploitation of sea bed gas hydrate in exploration and pilot production, in exploration process In, core drilling is most important most direct means.Sea bed gas hydrate CORING TECHNOLOGY is using from drilling well at this stage Platform or drilling ship above put forward the mode for drilling through the heart, and drilling tool used is also to bore core drill design according to common carry.And natural gas Hydrate generates and preservation is in subsea cryogenic hyperbaric environment, with it is common carry bore coring method and cored when, natural gas hydration Thing from seabed take out be transferred on drilling platforms or drilling ship when, can because pressure reduce and decompose, thus without Method is tested original state sample.Therefore, need badly and invent a kind of rock core coring drilling with keep up pressure drilling tool available for gas hydrates.
Utility model content
The utility model provides a kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, and it can be by rope salvaging side Formula obtains core sample, it is intended to the core sample of acquirement is at utmost restored seabed mineral occurrence condition, to change Enter exploitation of gas hydrates technology and foundation is provided.
To achieve the above object, technical scheme is used by the utility model:
A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, it matches with rope salvaging core-drilling technique, Its composition includes inner tube assembly and outer pipe assembly;The outer pipe assembly is the cavity structure of up/down perforation, and its upper end is by connecing Head is connected with drilling rod, and drill bit is set in outer pipe assembly lower end;Said inner tube assembly is placed in outer pipe assembly cavity, in inner tube assembly Lower end basket is set, and jump ring and clip spring seat are set in basket lower end;It is particular in that:It is additionally provided with pressure benefit System is repaid, the pressure compensating system is provided with pressurize cap assembly, and the pressurize cap assembly matches with clip spring seat in inner tube assembly, day Right gas hydrate rock core from bottom hole be transferred on the rig of seabed when, pressurize cap assembly realizes basket lower end with clip spring seat grafting Sealing.
Above-mentioned sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, the pressure compensating system are additionally provided with sensor, PLC Controller, power distribution cabinet, motor, ftercompction pump and ftercompction pipeline;Medium is seawater in the ftercompction pipeline, is set in ftercompction pipeline Ftercompction pump, the ftercompction pump operate under motor driving;The sensor is arranged on pressurize cap assembly, for gathering core sample The pressure signal of product, sensor connect the input of PLC, and the output end of the PLC is connected with power distribution cabinet, by Power distribution cabinet controlled motor acts.
Above-mentioned sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, said inner tube assembly also include drag for spearhead, recovery tube, Bullet card, upper return connector, hanging ring, piston component, cylinder sleeve, single action mechanism and lower return connector;It is described drag for spearhead, recovery tube, Upper return connector, cylinder sleeve, single action mechanism and lower return connector from top to bottom assemble successively, in upper return connector, cylinder sleeve and lower point The inner chamber of water swivel forms the up and down space of piston component;The hanging ring is sleeved on outside return connector, the bullet card It is equipped with recovery tube;Inner tube assembly coordinates the axially position realized in drilling process by bullet card, hanging ring and outer pipe assembly.
Above-mentioned sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, the piston component include piston, the first spring, steel Ball, steel ball seat and second spring;The piston bush is set with the first spring in cylinder sleeve outside piston rod;First bullet Spring and second spring are compression spring, and second spring is placed in steel ball seat, the assembling steel ball in second spring;The steel ball Seating is provided with the through hole with the insertion of lower return connector inner chamber in lower return connector inner chamber in steel ball seat, during drilling operation, Under drilling liquid pressure effect, piston is in bottom dead center position, and steel ball overcomes second spring elastic force to transport downwards under piston rod promotion It is dynamic, steel ball block hole is penetrated with basket;During coring operation, piston is in top dead center position in the presence of the first spring, Steel ball closes steel ball block hole under the effect of second spring elastic force, realizes the upper end sealing of basket.
Above-mentioned sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, the outer pipe assembly are additionally provided with adapter coupling, bullet card Room, upper reamer, outer tube and UR device;The adapter coupling upper end is connected by joint with drilling rod, below adapter coupling Bullet card room, upper reamer, outer tube and UR device, the UR device lower end is assembled successively to be connected with drill bit;The bullet block Head, bullet card room and inner tube assembly card of being hit by a bullet match.
The utility model is a kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, and its course of work is mainly included just Often drilling and two steps of coring drilling with keep up pressure.During normal drilling operation, inner tube assembly is thrown to bottom hole by drilling rod, and passes through suspension Ring is located on outer pipe assembly;After rig operating, under drilling liquid pressure effect, piston is moved to lower dead center position in inner tube assembly Put, steel ball overcomes second spring elastic force to move downward under piston rod promotion, steel ball block hole is penetrated with basket;Rig bores During entering, with the entrance of basket lower end rock core, the drilling fluid in basket is promoted to be flowed out by lower return connector runner;When Drilling round trip terminates drilling fluid and stopped after circulating, and loses drilling liquid pressure, piston is pushed to top dead centre under the force of a spring Position, steel ball close steel ball block hole under the effect of second spring elastic force, realize the upper end sealing of basket;Then into taking Heart job step, tripping in fishing spear, it is coordinated with dragging for spearhead and propose from outer pipe assembly inner tube assembly;When gas water closes Thing rock core from bottom hole be transferred on the rig of seabed when, by pressurize cap assembly and clip spring seat grafting, realize the sealing of basket lower end, Now basket upper and lower ends are in sealing state, can gather sample strain information in basket by sensor, be controlled by PLC Device processed judges that whether sample strain is consistent with gas hydrates generation and environmental pressure of the preservation in seabed in basket, works as rock Sample strain is less than gas hydrates generation and preservation when the environmental pressure in seabed in heart pipe, and PLC is to power distribution cabinet Instruction is sent, motor driving ftercompction pump starts running, by ftercompction pipeline to carrying out pressure supplement in basket, made in basket Sample strain is consistent with the environmental pressure in seabed.As can be seen here, the core sample obtained by the utility model, being capable of maximum journey Degree restores seabed mineral occurrence condition, and foundation is provided to improve exploitation of gas hydrates technology.
Brief description of the drawings
Fig. 1 is sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool schematic diagram described in the utility model;
Fig. 2 is inner tube assembly structural representation;
Fig. 3 is A segment structures enlarged drawing in Fig. 2;
Fig. 4 is Fig. 2 B segment structure enlarged drawings;
Fig. 5 is outer tube assembly structure schematic diagram;
Fig. 6 is pressure compensating system schematic diagram;
Fig. 7, Fig. 8 are the utility model drilling process schematic diagrames;
Fig. 9 is that the utility model is in coring drilling with keep up pressure working state schematic representation;
Figure 10 is enlarged drawing at I in Fig. 9.
Each label is expressed as in figure:
1st, inner tube assembly, 1-1, spearhead is dragged for, 1-2, recovery tube, 1-3, bullet card, 1-4, upper return connector, 1-5, hanging ring, 1-6, piston, 1-7, the first spring, 1-8, cylinder sleeve, 1-9, single action mechanism, 1-10, lower return connector, 1-11, firm ball seat, 1-12, Steel ball, 1-13, second spring, 1-14, basket, 1-15, clip spring seat, 1-16, jump ring;
2nd, outer pipe assembly, 2-1, adapter coupling, 2-2, bullet card room, 2-3, upper reamer, 2-4, outer tube, 2-5, UR Device, 2-6, drill bit;
3rd, pressure replenishment system, 3-1, pressurize cap assembly, 3-2, sensor, 3-3, ftercompction pump, 3-4, motor, 3-5, PLC Controller, 3-6, power distribution cabinet, 3-7, ftercompction pipeline;
4th, rock core.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further details to the utility model:
Referring to Fig. 1, the utility model provides a kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, and it beats with rope Fish for heart drilling process to match, its composition includes inner tube assembly 1 and outer pipe assembly 2, and the outer pipe assembly 2 is up/down perforation Cavity structure, said inner tube assembly 1 is placed in the cavity of outer pipe assembly 2, and it is particular in that:The sea-bottom natural gas water Compound rock core coring drilling with keep up pressure drilling tool is additionally provided with pressure compensating system 3.
Referring to Fig. 2, Fig. 3, Fig. 4, in sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool described in the utility model, Said inner tube assembly 1 includes dragging for spearhead 1-1, recovery tube 1-2, bullet card 1-3, upper return connector 1-4, hanging ring 1-5, piston group Part, cylinder sleeve 1-8, single action mechanism 1-9, lower return connector 1-10, basket 1-14, jump ring 1-16 and clip spring seat 1-15;It is described to drag for Spearhead 1-1, recovery tube 1-2, upper return connector 1-4, cylinder sleeve 1-8, single action mechanism 1-9, lower return connector 1-10, basket 1-14 From top to bottom assembled successively with clip spring seat 1-15, in upper return connector 1-4, cylinder sleeve 1-8 and lower return connector 1-10 inner chamber shape Into the up and down space of piston component;The piston component includes piston 1-6, the first spring 1-7, steel ball 1-12, steel ball seat 1- 11 and second spring 1-13, the piston 1-6 are sleeved in cylinder sleeve 1-8, and the first spring 1-7 is set with outside piston rod, described First spring 1-7 and second spring 1-13 is compression spring, and second spring 1-13 is placed in steel ball seat 1-11, in second spring Assembling steel ball 1-12, the steel ball seat 1-11 are placed in lower return connector 1-10 inner chambers, are provided with steel ball seat 1-11 on 1-13 With the through hole of lower return connector inner chamber insertion;The hanging ring 1-5 is sleeved on outside return connector 1-4, the bullet card 1-3 with Recovery tube 1-2 is equipped with;The jump ring 1-16 is arranged in clip spring seat 1-15;Inner tube assembly 1 by bullet card 1-3, hanging ring 1-5 with Outer pipe assembly 2 coordinates the axially position realized in drilling process.
It is described in sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool described in the utility model referring to Fig. 1, Fig. 5 Outer pipe assembly 2 is provided with adapter coupling 2-1, bullet card room 2-2, upper reamer 2-3, outer tube 2-4, UR device 2-5 and drill bit 2-6; The adapter coupling 2-1 upper ends are connected by joint with drilling rod, adapter coupling 2-1 assemble in turn below bullet card room 2-2, on expand Hole device 2-3, outer tube 2-4, UR device 2-5 and drill bit 2-6;The adapter coupling 2-1, bullet card room 2-2 and inner tube assembly 1 are hit by a bullet Card 1-3 matches.
It is described in sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool described in the utility model referring to Fig. 1, Fig. 6 Pressure compensating system 3 is provided with pressurize cap assembly 3-1, sensor 3-2, PLC 3-5, power distribution cabinet 3-6, motor 3-4, ftercompction Pump 3-3 and ftercompction pipeline 3-7;The pressurize cap assembly 3-1 matches with clip spring seat 1-15 in inner tube assembly 1;The ftercompction pipeline Medium is seawater in 3-7, sets ftercompction pump 3-3, the ftercompction pump 3-3 to be transported under motor 3-4 drivings in ftercompction pipeline 3-7 Turn;The sensor 3-2 is arranged on pressurize cap assembly 3-1, and for gathering the pressure signal of core sample, sensor 3-2 connects PLC 3-5 input is connect, the output end of the PLC 3-5 is connected with power distribution cabinet 3-6, controlled by power distribution cabinet 3-6 Motor 3-4 actions processed.
Referring to Fig. 7, Fig. 8, Fig. 9, Figure 10, sea bed gas hydrate rock core coring drilling with keep up pressure described in the utility model bores Tool, its course of work mainly include normal two steps of creeping into and core.During normal drilling operation, inner tube assembly 1 passes through drilling rod Bottom hole is thrown to, and is located by hanging ring 1-5 on outer pipe assembly 2;It is interior under drilling liquid pressure effect after rig operating Piston 1-6 is moved to bottom dead center position in pipe assembly 1, steel ball 1-12 overcome under piston rod promotion second spring 1-13 elastic force to Lower motion, the through hole and basket 1-14 for making steel ball seat 1-11 penetrate;In drilling process, with basket 1-14 lower ends rock core 4 Entrance, promote the drilling fluid in basket 1-14 to be flowed out by lower return connector 1-10 runner;After drilling fluid is stopped, piston 1- 6 are pushed to top dead center position in the presence of the first spring 1-7, and steel ball 1-12 is under the effect of second spring 1-13 elastic force by steel ball Seat 1-11 through hole closing, realize basket 1-14 upper end sealing;Then into job step of coring, tripping in fishing spear, make It, which coordinates with dragging for spearhead 1-1, proposes from outer pipe assembly 2 inner tube assembly 1;When gas hydrates rock core 4 is transferred to from bottom hole When on the rig of seabed, by the clip spring seat 1-15 grafting of the pressurize cap assembly 3-1 of pressure compensating system 3 and inner tube assembly 1, rock is realized The sealing of heart pipe 1-14 lower ends, now basket 1-14 upper and lower ends be in sealing state, can pass through sensor 3-2 gather rock Sample strain information in heart pipe 1-14, judge in basket 1-14 whether sample strain is hydrated with natural gas by PLC 3-5 Thing generation it is consistent with environmental pressure of the preservation in seabed, when in basket 1-14 sample strain be less than gas hydrates generate with For preservation when the environmental pressure in seabed, PLC 3-5 sends instruction to power distribution cabinet 3-6, and ftercompction pump 3-3 is driven by motor 3-4 Start running, by ftercompction pipeline 3-7 to carrying out pressure supplement in basket 1-14, make sample strain and sea in basket 1-14 The environmental pressure at bottom is consistent.

Claims (5)

1. a kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool, it matches with rope salvaging core-drilling technique, its Composition includes inner tube assembly (1) and outer pipe assembly (2);The outer pipe assembly (2) be up/down perforation cavity structure, its upper end It is connected by joint with drilling rod, drill bit (2-6) is set in outer pipe assembly (2) lower end;Said inner tube assembly (1) is placed in outer pipe assembly In cavity, basket (1-14) is set in the lower end of inner tube assembly (1), and sets jump ring (1-16) in basket (1-14) lower end With clip spring seat (1-15);It is characterized in that:The sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool is additionally provided with pressure compensation System (3), the pressure compensating system (3) are provided with pressurize cap assembly (3-1), the pressurize cap assembly (3-1) and inner tube assembly (1) in clip spring seat (1-15) match, gas hydrates rock core from bottom hole be transferred on the rig of seabed when, pressurize cap assembly (3- 1) sealing of basket (1-14) lower end is realized with clip spring seat (1-15) grafting.
2. sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool according to claim 1, it is characterised in that:The pressure Compensation system (3) is additionally provided with sensor (3-2), PLC (3-5), power distribution cabinet (3-6), motor (3-4), ftercompction pump (3-3) With ftercompction pipeline (3-7);Medium is seawater in the ftercompction pipeline (3-7), and ftercompction pump (3- is set in ftercompction pipeline (3-7) 3), the ftercompction pump (3-3) operates under motor (3-4) driving;The sensor (3-2) is arranged on pressurize cap assembly (3-1) On, for gathering the pressure signal of core sample, the input of sensor (3-2) connection PLC (3-5), the PLC controls The output end of device (3-5) processed is connected with power distribution cabinet (3-6), is acted by power distribution cabinet (3-6) controlled motor (3-4).
3. sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool according to claim 2, it is characterised in that:Said inner tube Assembly (1) also includes dragging for spearhead (1-1), recovery tube (1-2), bullet card (1-3), upper return connector (1-4), hanging ring (1-5), work Plug assembly, cylinder sleeve (1-8), single action mechanism (1-9) and lower return connector (1-10);It is described drag for spearhead (1-1), recovery tube (1-2), Upper return connector (1-4), cylinder sleeve (1-8), single action mechanism (1-9) and lower return connector (1-10) from top to bottom assemble successively, The inner chamber of upper return connector (1-4), cylinder sleeve (1-8) and lower return connector (1-10) forms the up and down space of piston component;Institute State hanging ring (1-5) to be sleeved on outside return connector (1-4), the bullet card (1-3) is equipped with recovery tube (1-2);Inner tube is total The axially position realized in drilling process is coordinated by bullet card (1-3), hanging ring (1-5) and outer pipe assembly (2) into (1).
4. sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool according to claim 3, it is characterised in that:The piston Component includes piston (1-6), the first spring (1-7), steel ball (1-12), steel ball seat (1-11) and second spring (1-13);It is described Piston (1-6) is sleeved in cylinder sleeve (1-8), and the first spring (1-7) is set with outside piston rod;First spring (1-7) and Second spring (1-13) is compression spring, and second spring (1-13) is placed in steel ball seat (1-11), at second spring (1-13) On assembling steel ball (1-12);The steel ball seat (1-11) is placed in lower return connector (1-10) inner chamber, at steel ball seat (1-11) The through hole with the insertion of lower return connector inner chamber is provided with, during drilling operation, under drilling liquid pressure effect, piston (1-6) is in Bottom dead center position, steel ball (1-12) overcome second spring (1-13) elastic force to move downward, lead to steel ball seat under piston rod promotion Hole penetrates with basket (1-14);During coring operation, piston (1-6) is in top dead centre position in the presence of the first spring (1-7) Put, steel ball (1-12) closes steel ball block hole under the effect of second spring (1-13) elastic force, realizes the upper of basket (1-14) End sealing.
5. sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool according to claim 4, it is characterised in that:The outer tube Assembly (2) is additionally provided with adapter coupling (2-1), bullet card room (2-2), upper reamer (2-3), outer tube (2-4) and UR device (2- 5);Adapter coupling (2-1) upper end is connected by joint with drilling rod, and bullet card room is assembled in turn below in adapter coupling (2-1) (2-2), upper reamer (2-3), outer tube (2-4) and UR device (2-5), UR device (2-5) lower end and drill bit (2-6) Connection;The adapter coupling (2-1), bullet card room (2-2) and inner tube assembly (1) card (1-3) of being hit by a bullet match.
CN201720930861.9U 2017-07-28 2017-07-28 A kind of sea bed gas hydrate rock core coring drilling with keep up pressure drilling tool Withdrawn - After Issue CN207194856U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107288565A (en) * 2017-07-28 2017-10-24 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
CN109372457A (en) * 2018-12-13 2019-02-22 安徽省地质矿产勘查局313地质队 Coring and be not in the mood for drilling do not mention brill conversion drilling tool
CN109751003A (en) * 2019-03-01 2019-05-14 广州海洋地质调查局 The safety-type rotary coring drilling with keep up pressure method of drilling at the sea

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107288565A (en) * 2017-07-28 2017-10-24 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
CN109372457A (en) * 2018-12-13 2019-02-22 安徽省地质矿产勘查局313地质队 Coring and be not in the mood for drilling do not mention brill conversion drilling tool
CN109372457B (en) * 2018-12-13 2020-03-27 安徽省地质矿产勘查局313地质队 Core-taking and coreless drilling non-lifting conversion drilling tool
CN109751003A (en) * 2019-03-01 2019-05-14 广州海洋地质调查局 The safety-type rotary coring drilling with keep up pressure method of drilling at the sea

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