CN205172496U - A rope coring tool pressurize section of thick bamboo - Google Patents
A rope coring tool pressurize section of thick bamboo Download PDFInfo
- Publication number
- CN205172496U CN205172496U CN201520849259.3U CN201520849259U CN205172496U CN 205172496 U CN205172496 U CN 205172496U CN 201520849259 U CN201520849259 U CN 201520849259U CN 205172496 U CN205172496 U CN 205172496U
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- China
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- basket
- top connection
- inner core
- inner tube
- sliding sleeve
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Abstract
The utility model relates to a rope coring tool pressurize section of thick bamboo. Include: connect to form the inner tube combination by inner tube top connection, inner tube, casing and disk seat to set up the case at casing and disk seat junction, connecting to form hollow basket by compensating barrel top connection, compensating barrel, spacing joint and basket and making up, basket composite entity suit is inside in the inner tube combination to constitute axial sliding sealed fit through the sliding sleeve between compensating barrel and inner tube top connection, set up locking mechanical system in the joint portion of sliding sleeve and inner tube top connection, basket combination upper end is connected and is sealed by the compensating barrel top connection, and lower extreme and case, the disk seat of basket combination constitute the sealed cooperation in interval. The utility model discloses overall structure designs compactly, and locking sealing mechanism structure is ingenious, realizes spacing, sealed, the function that area pressure basket shifted out of basket, realize that limited space acquires the big core diameter that tries one's best, satisfy the inner tube top connection security intensity than the book wall thickness simultaneously, and lock sealing mechanism shear strength, collapsoing strength height.
Description
Technical field
The utility model relates to oil, natural gas, Gas Hydrate Drilling coring tool field, is a kind of rope coring tool pressurize cylinder in the coring tool of Gas Hydrate Drilling indispensability in particular.
Background technology
Gas hydrates (naturalgashydrates, NGH), be commonly called as combustible ice, generated with water effect under lower temperature (0 ~ 10 ° of C) and higher pressure (being greater than 10MPa) condition by natural gas small molecular gas (as methane, ethane etc.); Gas hydrates energy density high (1m3 gas hydrates can discharge 164m3 natural gas) is a kind of novel alternative energy source.
Three necessary conditions of original natural gas hydrate synthesis: temperature is low, pressure is high, gas source.Find that the stored zone of gas hydrates is at present: the permafrost band of high latitude area; The land area of polar region; In marine deposits.The temperature of gas hydrates stored zone, pressure are satisfied with the structure remained stable of gas hydrates; Therefore keeping the tax of gas hydrates to deposit temperature and pressure is the approach obtaining gas hydrates sample.
Research shows, wire line coring operating type is the exchange heat time shortening gas hydrates sample and surrounding environment; Insulation coring tool is the exchange heat of isolated gas hydrates and surrounding environment; Coring drilling with keep up pressure instrument is the best mode keeping gas hydrates reset pressure.
But in current coring tool to creep into inner core modular construction relatively simple, mainly be applied in rock, ground coring operation, generally lack structure and the measure of insulation and pressurize, and the interior latus rectum of pressurize cylinder is little, can not meet the coring operation of gas hydrates sample the requirement of time, temperature and pressure.
Utility model content
The purpose of this utility model is applied in length duty cycle existing for the coring operation of gas hydrates sample, heat-insulation pressure keeping weak effect, defect that latus rectum of coring is little for prior art, a kind of rope coring tool pressurize cylinder is provided, obtains larger core diameter to solve limited drilling tool water hole diameter; Maintain the occurrence condition of gas hydrates rock core to ground; Improve the success rate of the gas hydrates sample obtaining reset condition; Positioning device structure is compact, and has the function of transfer water compound rock core with pressure.
The utility model is achieved through the following technical solutions:
A kind of rope coring tool pressurize cylinder, comprise: connect to form inner core from top to bottom successively by inner core top connection 1, inner core 8, housing 9 and valve seat 12 and combine, and preset annular chamber at housing 9 and top, valve seat 12 junction, spool 11 is set in annular chamber, spool 11 abuts in annular chamber outer wall when plumbness, spool 11 when level and the upper port formation level of valve seat 12 to being sealed and matched; The basket being connected to form hollow by compensating cylinder top connection 13, compensating cylinder 6, positioning joint 5 and basket 7 from top to bottom successively combines, it is inner that basket composite entity is sleeved on inner core combination, and slid axially by sliding sleeve between compensating cylinder 6 and inner core top connection 1 and be sealed and matched, at sliding sleeve 2 and the joint portion of inner core top connection 1, locking mechanism is set; Basket combination upper end is connected by compensating cylinder top connection 13 and seals, and the lower end of basket combination forms separation seal with spool 11, valve seat 12 and coordinates.
Such scheme also comprises:
In compensating cylinder 6, be provided with piston 14, be provided with inside and outside pressure transfer hole at positioning joint 5.
Described locking mechanism comprises: the locking pin 3 be disposed radially between inner core top connection 1 and sliding sleeve 2, or the locking pin 3 of circumferencial direction is tangential on along inner core top connection 1 and sliding sleeve 2 joint portion, between the inner core top connection 1 and sliding sleeve 2 of locking pin about 3, be respectively equipped with seal.
Inner core top connection 1, inner core 8, housing 9 and valve seat 12 are all threaded connection, and arrange seal in each junction; Compensating cylinder top connection 13, compensating cylinder 6, positioning joint 5 and basket 7 are all threaded connection, and arrange seal in each junction.
The utility model has the advantages that: inner core combination and basket combine intert with the use of, the latus rectum of basket can be improved to greatest extent, realize limited space and obtain large core diameter of trying one's best; The top self sealss of basket combination, the flip-shell spool that bottom is combined by inner core coordinates with valve seat and realizes shutoff, guarantees that the interior thing that samples of basket remains on pressure state; Rope coring tool pressurize cylinder overall construction design is compact, and locking (spacing) sealing mechanism structure is ingenious, realizes spacing, the sealing of basket, function that basket with pressure shifts out; Meet the inner core top connection security intensity compared with book wall thickness, and locking (spacing) sealing mechanism shear strength, collapsoing strength safety factor are high simultaneously.
Accompanying drawing explanation
The structural representation of a kind of rope coring tool pressurize cylinder that Fig. 1 proposes for the utility model.
The A-A schematic cross-section in the inner core top connection locking pin exit of a kind of rope coring tool pressurize cylinder that Fig. 2 proposes for the utility model.
In figure: the top connection of 1-inner core, 2-sliding sleeve, 3-lock pin, 4-O type seal (circle), 5-positioning joint, 6-compensating cylinder, 7-basket, 8-inner core, 9-housing, 10-leading truck, 11-spool, 12-valve seat, the top connection of 13-compensating cylinder, 14-piston, 15-plug screw, 16-groove.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the utility model is further described.
With reference to Figure of description 1, inner core top connection 1, inner core 8, housing 9, valve seat 12 form inner core combination in the mode be threaded successively; Compensating cylinder top connection 13, compensating cylinder 6, positioning joint 5, basket 7 form basket combination in the mode be threaded successively; Meanwhile, inner core top connection 1, sliding sleeve 2, locking pin 3, O RunddichtringO 4, positioning joint 5 form position limiting sealed mechanism; Housing 9, leading truck 10, spool 11, valve seat 12 decomposition pressure closing means.Wherein, inner core top connection 1 cylindrically, upper and lower two ends machining screw; Middle part is designed to two symmetrical irregularly-shaped holes along the direction being tangential on circumference, and the hole design hole that screw thread can coordinate with plug screw 15, diameter is less that diameter is larger is through with the semicircular groove 16 designed at inner chamber, inserts stop pin nail 3 in groove 16.Cylindrically, the semicircular groove of outside design coordinates with the grafting of locking pin 3 is spacing sliding sleeve 2, and at the both sides up and down of groove design O RunddichtringO groove; Locking pin 3 is cylindric, one end machining screw.Positioning joint 5 outside is variable-diameter structure, two ends machining screw, middle part design O RunddichtringO groove.
The through hole upper end of valve seat 12 is provided with the conical surface, and spool 11 is discoid, and is provided with the conical surface be sealed and matched with valve seat 12 through hole.Spool 11 stands on valve seat 12 upper surface and is clipped in the annular chamber between inner core 8 and basket 7, and after basket 7 moves, the spool 11 of erectility can fall into level, and to cover on valve seat 12 upper surface and seal valve seat 12 through hole.
In compensating cylinder 6, be provided with piston 14, be provided with inside and outside pressure transfer hole at positioning joint 5.The inert gas of preliminary filling in compensating cylinder 6, when rock core enters basket 7, piston 14 can move up and down in compensating cylinder 6 endoporus, compensates the pressure loss tripped out in pressurize cylinder process.
The valve seat 12 lower end lower device that is threaded, compensating cylinder top connection 13 connect fishing device and locate basket combination to form complete coring tool.
Pressurize cylinder assembling of the present utility model: compensating cylinder top connection 13, compensating cylinder 6, positioning joint 5, basket 7 form basket combination in the mode be threaded successively.Sliding sleeve 2 is inserted in basket combination after mounting O-shaped sealing ring 4 from compensating cylinder 6 upper end, and load connect successively with screw thread inner core top connection 1, inner core 8, housing 9; Locking pin 3 screws in plug screw after the irregularly-shaped hole of inner core top connection 1 inserts the semi-circular recesses of sliding sleeve 2 and inner core top connection 1.Leading truck 10 is arranged on valve seat 12 upper end, and spool 11 is arranged on after on leading truck 10 and is inserted in from the lower end of basket combination, and is threaded with housing 9 by valve seat 12; Compensating cylinder top connection 13 connects fishing device and locates the complete coring tool of basket combination composition.
Rope coring tool pressurize cylinder of the present utility model coordinates core drill to use, complete rope coring tool pressurize cylinder install correct after, mention pressurize cylinder with rope, under enter in drilling tool water hole to get final product core-drilling.During core-drilling, spool 11, leading truck 10 are hidden in the annular chamber between basket 7 and housing 9.Core-drilling terminates, under enter cable nipple be connected with compensating cylinder top connection 13 and on carry, basket combination with on carry.When basket combination lower edge exceedes spool upper limb, spool 11 from uprightly instead becoming level, and with valve seat 12 conical surface seal, closed pressurize cylinder lower end inner chamber; Basket is carried in continuation, the shoulder of positioning joint 5 and the end contact of sliding sleeve 2, drive inner core lift-off shaft bottom, simultaneously the O RunddichtringO 4 of positioning joint 5 and inner core top connection 1 fitted seal inner core upper end inner chamber.After pressurize cylinder arrives ground, dismounting plug screw 15, special tool pulls out stop pin nail 3 after being threaded connection locking pin 3, and the outlet of installation plug screw dense block rationed marketing nail gets final product the rock core in transfer basket 7 with pressure.
Claims (4)
1. a rope coring tool pressurize cylinder, it is characterized in that comprising: connect to form inner core from top to bottom successively by inner core top connection (1), inner core (8), housing (9) and valve seat (12) and combine, and preset annular chamber at housing (9) and valve seat (12) top, junction, spool (11) is set in annular chamber, spool (11) abuts in annular chamber outer wall when plumbness, spool (11) when level and the upper port formation level of valve seat (12) to being sealed and matched; The basket being connected to form hollow by compensating cylinder top connection (13), compensating cylinder (6), positioning joint (5) and basket (7) from top to bottom successively combines, it is inner that basket composite entity is sleeved on inner core combination, and slid axially by sliding sleeve between compensating cylinder (6) and inner core top connection (1) and be sealed and matched, at sliding sleeve (2) and the joint portion of inner core top connection (1), locking mechanism is set; Basket combination upper end is connected by compensating cylinder top connection (13) and is sealed, and the lower end of basket combination forms separation seal with spool (11), valve seat (12) and coordinates.
2. rope coring tool pressurize cylinder according to claim 1, is characterized in that: in compensating cylinder (6), be provided with piston (14), is provided with inside and outside pressure transfer hole at positioning joint (5).
3. rope coring tool pressurize cylinder according to claim 1 and 2, it is characterized in that described locking mechanism comprises: the locking pin (3) be disposed radially between inner core top connection (1) and sliding sleeve (2), or the locking pin (3) of circumferencial direction is tangential on along inner core top connection (1) and sliding sleeve (2) joint portion, be positioned between the upper and lower inner core top connection (1) of locking pin (3) and sliding sleeve (2) and be respectively equipped with seal.
4. rope coring tool pressurize cylinder according to claim 3, is characterized in that: inner core top connection (1), inner core (8), housing (9) and valve seat (12) are all threaded connection, and arrange seal in each junction; Compensating cylinder top connection (13), compensating cylinder (6), positioning joint (5) and basket (7) are all threaded connection, and arrange seal in each junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520849259.3U CN205172496U (en) | 2015-10-30 | 2015-10-30 | A rope coring tool pressurize section of thick bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520849259.3U CN205172496U (en) | 2015-10-30 | 2015-10-30 | A rope coring tool pressurize section of thick bamboo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172496U true CN205172496U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520849259.3U Expired - Fee Related CN205172496U (en) | 2015-10-30 | 2015-10-30 | A rope coring tool pressurize section of thick bamboo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172496U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639939A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Pressure maintaining cylinder of rope coring tool |
| CN107559002A (en) * | 2017-08-17 | 2018-01-09 | 北京探矿工程研究所 | Pressure compensation device of pressure maintaining sampler |
| WO2020034355A1 (en) * | 2018-08-13 | 2020-02-20 | 四川大学 | Pressure-maintaining-cylinder lower-end sealing structure |
| WO2020077977A1 (en) * | 2018-10-18 | 2020-04-23 | 湖南科技大学 | Unscrewing device for pressure-maintaining cover of submarine natural gas hydrate pressure-maintaining core barrel |
| CN113153196A (en) * | 2021-01-04 | 2021-07-23 | 成都理工大学 | Stress-preserving coring intelligent rock core extraction system and method |
-
2015
- 2015-10-30 CN CN201520849259.3U patent/CN205172496U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639939A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Pressure maintaining cylinder of rope coring tool |
| CN107559002A (en) * | 2017-08-17 | 2018-01-09 | 北京探矿工程研究所 | Pressure compensation device of pressure maintaining sampler |
| WO2020034355A1 (en) * | 2018-08-13 | 2020-02-20 | 四川大学 | Pressure-maintaining-cylinder lower-end sealing structure |
| WO2020077977A1 (en) * | 2018-10-18 | 2020-04-23 | 湖南科技大学 | Unscrewing device for pressure-maintaining cover of submarine natural gas hydrate pressure-maintaining core barrel |
| CN113153196A (en) * | 2021-01-04 | 2021-07-23 | 成都理工大学 | Stress-preserving coring intelligent rock core extraction system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20211030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |