CN203130003U - Differential type air drilling coring device - Google Patents
Differential type air drilling coring device Download PDFInfo
- Publication number
- CN203130003U CN203130003U CN201220537623.9U CN201220537623U CN203130003U CN 203130003 U CN203130003 U CN 203130003U CN 201220537623 U CN201220537623 U CN 201220537623U CN 203130003 U CN203130003 U CN 203130003U
- Authority
- CN
- China
- Prior art keywords
- core
- coring
- drilling
- type air
- many ways
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A differential type air drilling coring device comprises a differential mechanism, a locating short segment and an outer barrel component, a coring drill bit are connected from top to bottom through threads to form an outer barrel assembly, a hanging assembly, an inner barrel component and a core cutting mechanism are connected from top to bottom through threads to form an inner barrel assembly, the hanging assembly is connected with the locating short segment through a hanging component, the whole inner barrel assembly is hung in the outer barrel assembly, the core cutting mechanism is at the position of an inner cavity of the coring drill bit, and the whole coring device and a drilling tool are connected together through threads. When coring operation is performed, a drilling device is used for driving the coring device to perform the coring and drilling operation in a rotatable mode, after the coring and drilling is completed, due to the fact that a ball is thrown on the ground, the hanging component is cut off by utilization of a differential device of the coring device, the inner barrel assembly goes down, and therefore the core cutting mechanism works, and the differential type air drilling coring device guarantees that a drill core does not fall out in the process of pulling out of the drilling device.
Description
Technical field
The utility model relates to the air drilling coring apparatus in oil and gas exploration field, specifically is a kind of differential type air drilling coring apparatus and the method for utilizing this differential type air drilling coring apparatus.
Background technology
Air drilling is cored and is referred to that the stratum when utilizing air as the drilling well medium cores, and the cooling of air, greasy property are different from conventional liquid drilling fluid, need be at the coring tool of air drilling design.The air drilling coring apparatus of present domestic utilization all is to put forward the heart mode of coring of cutting on utilizing, Chinese invention patent, invention and created name is " gas drilling centering technique ", the patent No. " 200710049630.8 ", the applying date cores and cuts the centering technique of heart mode for disclosing a kind of top uncoupling type in " 2007.07.30 ".Should on carry and cut the heart mode of coring and only be adapted to rock core and become post to core in the stratum preferably, for the stratum relatively fragmentation or rock core to become the bad stratum of post to core inapplicable, the weak effect of perhaps coring; And creep into when coring, there are not antifriction, refrigerating function at rock core and inner core; Therefore its centering technique method also on put forward the heart mode of coring of cutting, the external instrument principle of using also is like this, some is the structure more complicated, and the sampling effect is undesirable, can not adapt to oil and gas exploration from now on the needs of the drilling and coring delivery under the gas drilling condition.Domestic drilling and coring delivery device all is not establish sealing in the column drill head cavity in addition, is that the sealing core drilling instrument seals at this place under the medium at drilling fluid, and be static seal only.Be that drilling and coring delivery instrument domestic under the medium adopts at air be single sealing, even some also blow-by, the sampling effect is undesirable, can not adapt to from now on oil and gas exploration with the needs of the drilling and coring delivery under the gas drilling condition.
The utility model content
The purpose of this utility model is the problem that exists at prior art; provide a kind of rock core that not only is adapted to become post to core in the stratum preferably; also can be applicable to the stratum relatively fragmentation or rock core become the bad stratum of post to core, the integrality differential type air drilling coring apparatus of protection rock core.The present invention simultaneously gives the coring method of utilizing this device.
The technical solution of the utility model comprises:
Differential type air drilling coring apparatus comprises differential attachment 1, orientation spool 2, hangs assembly 3, outer barrel component 4, interior cartridge module 5, cuts concentric mechanism 6 and core bit 7.Wherein: body 11, body 13, top connection 10 in many ways outward in many ways in differential attachment 1 comprises.Cut concentric mechanism 6 and be in core bit 7 inner chamber positions.Differential attachment 1, orientation spool 2, outer barrel component 4, core bit 7 connect and compose the urceolus assembly up and down.Interior cartridge module 5 and cut concentric mechanism 6 and connect and compose the inner core assembly up and down.In in many ways body 11 lower ends and center sub 19 in being located at outer body in many ways 13 constitute gaps and peg graft and cooperate, center sub 19 is provided with radial and axial air vent.Hang assembly 3 and comprise the lining 20 that upwards is connected with center sub 19, the hanging pup joint 22 that is connected with suspended structure 14 downwards.Hanging pup joint 22 is connected by thrust bearing 23 with hitch 14, and hitch 14 connects tap 21, adjustable pressure-reducing valve 15, interior cartridge module 5 downwards successively and cuts concentric mechanism 6.Leave the gap as gas channel 24 between the inside and outside tube assembly.The core grabber 18 that cuts concentric mechanism 6 is provided with sealing unit with core bit 7 inwalls.
Such scheme further comprises:
Described adjustable pressure-reducing valve 15 comprises adjustable nozzle 15-1 and valve body, and valve inner is provided with relief chamber 15-2, and the outside is provided with relief hole 15-3, and relief hole 15-3 and relief chamber 15-2 connect, and adjustable nozzle 15-1 is connected on the valve body and with relief chamber 15-2 and connects.
The sealing unit that cuts concentric mechanism 6 and core bit 7 is that the inner chamber mild alloy ring potted component 16 and the rubber sealing element 17 that are embedded in core grabber 18 tops are formed, and rubber sealing element 17 is embedded on the inner chamber mild alloy ring potted component 16.
In in many ways body 11 lower ends dock with center sub 19 by pressure-bearing joint 12, interior body in many ways 11 or pressure-bearing joint 12 and outside in many ways the joint portion of body 13 be provided with sealing ring 27; Center sub 19 is connected with lining 20 by adapter sleeve 26.
The beneficial effects of the utility model are: adopt differential type air drilling coring apparatus and method to be implemented in continuous coring in the reservoir, be not subjected to the restriction of the well depth.Core and finish to utilize to extract center device on the drilling tool, owing to cut concentric mechanism rock core is carried out sealing fully, can not fall the heart in the trip-out process, be conducive to improve core recovery and rock core quality.Differential type air drilling coring apparatus can pass through high pressure air reducing rock core and inner core cooling and reduce frictional resistance.And the process of coring implements under the air drilling condition, do not have the pollution of slime water, and the rock core of obtaining reflects the physical parameter on stratum truly.Between cartridge module and rock core are grabbed in coring tool the compound seal element is set, has limited core bit inner chamber and the rock core air mass flow between grabbing, reduced rock core washing away in drilling process, be conducive to improve core recovery.Carrying out air drilling when coring; can realization obtain deformed core sample; just can utilize drilling equipment to core as long as need; when core-drilling finishes, by the ground pitching, utilize differential type air drilling coring apparatus; make the concentric mechanism work of cutting, the protection rock core does not drop out in trip-out process.Flow to air has control action simultaneously, and rock core is washed away less.
Description of drawings
Fig. 1 is a kind of differential type air drilling coring apparatus the first half structural representation of the present utility model.
Fig. 2 is a kind of differential type air drilling coring apparatus the latter half structural representation of the present utility model.
Fig. 3 is the structural representation of adjustable nozzle part among Fig. 1.
Fig. 4 is the potted component part-structure schematic diagram on the concentric mechanism of cutting among Fig. 1.
Mark among the figure: 1. differential attachment; 2. orientation spool; 3. suspension assembly; 4. outer barrel component; 5. interior cartridge module; 6. cut concentric mechanism; 7. core bit; 8. hanging element; 9. drilling tool; 10. top connection; 11. interior body in many ways; 12. pressure-bearing joint; 13. body in many ways outward; 14. hitch; 15. adjustable pressure-reducing valve; 15-1. adjustable nozzle; 15-2. relief chamber; 15-3. discharge orifice; 16. inner chamber mild alloy ring potted component; 17. rubber sealing element; 18. rock core is grabbed; 19. center sub; 20. lining; 21. tap; 22. hanging pup joint; 23. thrust bearing; 24. gas channel; 25 steel balls; 26 adapter sleeves, 27 sealing rings; 28 inner cores of coring.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to attached Fig. 1 and 2, differential attachment 1, orientation spool 2, outer barrel component 4, core bit 7 connect together up and down from top to bottom by screw thread and form the urceolus combination, hang assembly 3, interior cartridge module 5 and cut concentric mechanism 6 to connect together up and down by screw thread and form the inner core combination.In many ways body 11, body 13, top connection 10 and pressure-bearing joint 12 in many ways outward in differential attachment 1 comprises, drilling tool 9, top connection 10, interior body in many ways 11 and pressure-bearing joint 12 are successively by being threaded, in many ways body 11 outsides in many ways in body 13 is enclosed within outward, and interior body in many ways 11 and outer body 13 in many ways are provided with spacing step mutually, in in many ways body 11 both can be mutually externally in many ways body 13 endwisely slip, can transmit moment of torsion simultaneously again.Pressure-bearing joint 12 belows are center subs 19, and the internal diameter of pressure-bearing joint 12 makes to be enclosed within center sub 19 outsides when pressure-bearing joint 12 moves down greater than center sub 19 external diameters.Center sub 19 radially and center (axially) be provided with gas flow, allow gas to enter tap 21 and adjustable pressure-reducing valve 15 from the hydrophthalmia of pressure-bearing joint 12 downwards via the gas flow of center sub 19.
Hanging element 8 connects together with orientation spool 2 hanging assembly 3, and with whole inner core combined suspension in the urceolus combination, the bearing pin of hanging element 8 for cutting off.Hang assembly 3 and comprise hanging pup joint 22, hitch 14, tap 21 and adjustable pressure-reducing valve 15, be provided with thrust bearing 23 between hanging pup joint 22 and the hitch 14, make in the drilling process that when outer barrel component 4 and drill bit rotation, interior cartridge module 5 outer barrel component 4 relatively is static.Hitch 14, tap 21 and adjustable pressure-reducing valve 15 are successively by being threaded.
With reference to accompanying drawing 3, adjustable pressure-reducing valve 15 is made up of adjustable nozzle 15-1 and relief chamber 15-2, and relief chamber 15-2 bottom is provided with discharge orifice 15-3.Adjustable nozzle 15-1 has many kinds of bores of 3mm-10mm, realizes the adjustable in pressure of relief chamber 15-2 by the nozzle of changing different bores when the ground assembling coring apparatus.The gases at high pressure of coming from center sub 19 flow in tap 21 punishment, most of by-pass prot by tap 21 enters core bit 7 hydrophthalmias downwards along the gap (gas channel 24) of interior cartridge module 5 and outer barrel component 4, the part pressure-air become after through adjustable pressure-reducing valve 15 decompression low-pressure air current enter by discharge orifice 15-3 in core barrel in the cartridge module 5, low-pressure air current passes through between inner core 28 inwalls and the rock core coring of interior cartridge module 5, the lubricated and cooling to rock core.
With reference to accompanying drawing 4, tap 21 belows also connect interior cartridge module 5 successively and cut concentric mechanism 6 by screw thread, cut concentric mechanism 6 and be in core bit 7 inner chamber positions, cut concentric mechanism 6 and comprise rock core gripper, inner chamber mild alloy ring potted component 16 and rubber sealing element 17, core grabber 18 bottoms are wedge shape, and core bit 7 inwalls also are provided with the wedge shape end face that cooperates with core grabber 18, touch the wedge shape end face after-contraction of core bit 7 when making core grabber 18 descending and hold rock core tightly.
Inner chamber mild alloy ring potted component 16 and rubber sealing element 17 are arranged in coring tool between the cartridge module 5 and core grabber 18, and rubber sealing element 17 is embedded on the inner chamber mild alloy ring potted component 16, form compound seal.Inner chamber mild alloy ring potted component 16 and rubber sealing element 17 limit the air of coring tool inner/outer tube inter-module together by the flow velocity between core bit inner chamber and the core grabber 18, and the protection rock core is not washed away in drilling process.
When carrying out coring operation, utilize drilling tool 9 to send into the differential type air drilling coring apparatus of the whole series and require the coring depth position in the well, utilize drilling equipment to drive the rotation of differential type air drilling coring apparatus and carry out the core-drilling operation, utilize the differential attachment 1 of differential type air drilling coring apparatus, when core-drilling finishes, by the ground pitching, steel ball 25 drops between pressure-bearing joint 12 and the center sub 19, and the gap of the slightly larger in diameter of ball between pressure-bearing joint 12 and center sub 19.Transfer drilling tool 9 and apply the pressure of the drill; pressure-bearing joint 12 passes to lining 20 to the pressure of the drill by ball and center sub 19; lining 20 presses down and hangs assembly 3; cut off hanging element 8; interior cartridge module 5 is descending; make and cut concentric mechanism 6 work, the core grabber that cuts concentric mechanism 6 moves downward along the inclined-plane holds rock core tightly, and the protection rock core does not drop out in trip-out process.Adopt differential type air drilling coring apparatus to can be implemented in continuous coring in the reservoir, be not subjected to the restriction of the well depth.Sampling finishes to utilize on the drilling tool 9 to extract center device, carries out sealing fully owing to cut 6 pairs of rock cores of concentric mechanism, can not fall the heart in the trip-out process, is conducive to improve core recovery and rock core quality.This differential type air drilling coring apparatus is implemented under the air drilling condition, does not have the pollution of slime water, and the rock core of obtaining reflects the physical parameter on stratum truly.
When the apparatus and method of use such scheme are carried out coring operation; utilize drilling tool to send into a whole set of differential type air drilling coring apparatus and require the coring depth position in the well; utilize drilling equipment to drive the rotation of differential type air drilling coring apparatus and carry out the core-drilling operation; when core-drilling finishes, by the ground pitching, utilize differential gear; cut off hanging element; the inner core combination is descending, makes the concentric mechanism work of cutting, and the protection rock core does not drop out in trip-out process.
Claims (5)
1. differential type air drilling coring apparatus comprises differential attachment (1), orientation spool (2), hangs assembly (3), outer barrel component (4), interior cartridge module (5), cuts concentric mechanism (6) and core bit (7) is characterized in that: body (11), body (13), top connection (10) in many ways outward in many ways in differential attachment (1) comprises; Cut concentric mechanism (6) and be in core bit (7) inner chamber position; Differential attachment (1), orientation spool (2), outer barrel component (4), core bit (7) connect and compose the urceolus assembly up and down, interior cartridge module (5) and cut concentric mechanism (6) and connect and compose the inner core assembly up and down; In in many ways body (11) lower end and center sub (19) in being located at outer body (13) in many ways constitute the gap and peg graft and cooperate, center sub (19) is provided with radial and axial air vent; Hang assembly (3) and comprise the lining (20) that upwards is connected with center sub (19), the hanging pup joint (22) that is connected with suspended structure (14) downwards, hanging pup joint (22) is connected by thrust bearing (23) with hitch (14), and hitch (14) connects tap (21), adjustable pressure-reducing valve (15), interior cartridge module (5) downwards successively and cuts concentric mechanism (6); Leave the gap as gas channel (24) between the inside and outside tube assembly; The core grabber (18) that cuts concentric mechanism (6) is provided with sealing unit with core bit (7) inwall.
2. differential type air drilling coring apparatus according to claim 1, it is characterized in that: described adjustable pressure-reducing valve (15) comprises adjustable nozzle (15-1) and valve body, valve inner is provided with relief chamber (15-2), the outside is provided with relief hole (15-3), relief hole (15-3) connects with relief chamber (15-2), and adjustable nozzle (15-1) is connected on the valve body and with relief chamber (15-2) and connects.
3. differential type air drilling coring apparatus according to claim 1 and 2, it is characterized in that: cut concentric mechanism (6) and form for the inner chamber mild alloy ring potted component (16) and the rubber sealing element (17) that are embedded in core grabber (18) top with the sealing unit of core bit (7), rubber sealing element (17) is embedded on the inner chamber mild alloy ring potted component (16).
4. differential type air drilling coring apparatus according to claim 3, it is characterized in that: dock with center sub (19) by pressure-bearing joint (12) interior body in many ways (11) lower end, interior body in many ways (11) or pressure-bearing joint (12) and outside in many ways the joint portion of body (13) be provided with sealing ring (27); Center sub (19) is connected with lining (20) by adapter sleeve (26).
5. differential type air drilling coring apparatus according to claim 4 is characterized in that: interior cartridge module (5) comprises core lining and the inner core (28) of coring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220537623.9U CN203130003U (en) | 2012-10-20 | 2012-10-20 | Differential type air drilling coring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220537623.9U CN203130003U (en) | 2012-10-20 | 2012-10-20 | Differential type air drilling coring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130003U true CN203130003U (en) | 2013-08-14 |
Family
ID=48937994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220537623.9U Withdrawn - After Issue CN203130003U (en) | 2012-10-20 | 2012-10-20 | Differential type air drilling coring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130003U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775013A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Differential type air-drilling coring device and differential type air-drilling coring method |
| CN111550210A (en) * | 2019-01-23 | 2020-08-18 | 中石化石油工程技术服务有限公司 | Coring tool for shale oil gas trapping and warm-pressing detection in tripping process |
| CN114233223A (en) * | 2021-11-24 | 2022-03-25 | 中煤科工集团西安研究院有限公司 | Pressure-maintaining and quick coring device for coal rock strata of ground well |
-
2012
- 2012-10-20 CN CN201220537623.9U patent/CN203130003U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775013A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Differential type air-drilling coring device and differential type air-drilling coring method |
| CN103775013B (en) * | 2012-10-20 | 2017-05-31 | 中石化石油工程技术服务有限公司 | Differential type air drilling coring device and method |
| CN111550210A (en) * | 2019-01-23 | 2020-08-18 | 中石化石油工程技术服务有限公司 | Coring tool for shale oil gas trapping and warm-pressing detection in tripping process |
| CN114233223A (en) * | 2021-11-24 | 2022-03-25 | 中煤科工集团西安研究院有限公司 | Pressure-maintaining and quick coring device for coal rock strata of ground well |
| CN114233223B (en) * | 2021-11-24 | 2024-05-31 | 中煤科工集团西安研究院有限公司 | Ground well coal stratum pressurize quick coring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103775013A (en) | Differential type air-drilling coring device and differential type air-drilling coring method | |
| CN101215959B (en) | Double tube forced core-picking drill | |
| CN201818263U (en) | Horizontal well coring tool | |
| CN104632073A (en) | Reverse circulation drilling method of hollow down-hole hammer | |
| CN202064903U (en) | Downhole cushioning and supporting device for gas recovery by water discharging of plunger | |
| CN201141287Y (en) | Minute borehole hydropower presser | |
| CN103643913A (en) | Ice layer air turbine reverse circulation continuous coring downhole power drilling tool | |
| CN203130003U (en) | Differential type air drilling coring device | |
| CN102155178A (en) | Large-diameter coalbed methane core drill bit | |
| CN105421995A (en) | Combine hollow shaft bottom power rope coring drilling device | |
| CN102296950A (en) | Hydraulic shearing type sampling drilling tool | |
| CN203275120U (en) | Novel hydraulic piston sampling tool | |
| CN105986774A (en) | Quaternary system rotation rope coring device for balancing wave heave | |
| CN203145879U (en) | Combined core drilling tool for improving core drilling effect of broken stratum | |
| CN200989164Y (en) | Pulsation pumping pressure drilling device for lowering underwell differential pressure | |
| CN203685037U (en) | Pipe-follow drilling chambering device of soft broken coal bed gas extraction hole | |
| CN201521254U (en) | Novel pullout blowout control joint | |
| CN202031512U (en) | Large-caliber core drill bit for coal seam gas | |
| CN102657963A (en) | Apparatus for reducing solid phase content of drilling fluid under well | |
| CN205225075U (en) | Modular cavity shaft bottom power wire line coring drilling tool | |
| CN204984337U (en) | Drilling rod back pressure blowout preventer for marine rig | |
| CN212774193U (en) | Slag discharge device for reverse circulation drilling | |
| CN214273581U (en) | Lifting drilling type large-diameter well bottom in-situ pressure maintaining coring drilling tool | |
| CN105986775A (en) | Sea quaternary system drilling combination coring method | |
| CN105672883B (en) | A kind of drilling well speed-raising tool and its accelerating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130814 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130814 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |