CN201062501Y - Barefoot horizontal well packing sand-proof tool - Google Patents
Barefoot horizontal well packing sand-proof tool Download PDFInfo
- Publication number
- CN201062501Y CN201062501Y CNU2007200251749U CN200720025174U CN201062501Y CN 201062501 Y CN201062501 Y CN 201062501Y CN U2007200251749 U CNU2007200251749 U CN U2007200251749U CN 200720025174 U CN200720025174 U CN 200720025174U CN 201062501 Y CN201062501 Y CN 201062501Y
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- filling
- central tube
- hole
- lock ring
- tube
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Abstract
The utility model relates to an open hole horizontal well filling sand preventing tool, which comprises an upper connector, a hydraulic assembly, a locking assembly, a sealing assembly, an anchoring assembly, a filling assembly, a closing mechanism, a releasing mechanism, a lower connector, a through hole arranged at the upper part of a movable pressing ring, a filling central tube penetrating through the inner parts of the upper connector and the lower connector, a back washing ring-shaped cavity formed among the filling central tube, a fishing connector and a central tube, and a back washing channel formed between the filling central tube and the through hole of a lower cone body; a filling opening arranged at the lower part of the lower cone body, and a filling channel formed between the filling opening and the through hole of the filling central tube. The utility model effectively integrates the gravel filling and the well back washing process structure into a tool on the basis of the reserving of the function of a hanging releasing packer, therefore, the operating efficiency is greatly improved, the construction operation procedure is reduced, and the utility model is mainly applied to the oil field open hole horizontal well filling sand preventing process.
Description
One, technical field
The utility model relates to the underground work instrument of oilfield filling, sand control, particularly a kind of open-hole horizontal well filling anti-sand instrument.
Two, background technology
The disclosed Chinese patent ZL99219693.0 of the inventor " suspension back-off packer " is made up of top connection, locking assembly, seal assembly, grappling assembly, lower contact.The locking assembly comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism and four parts of releasing gadget, wherein retaining mechanism is made up of central tube, lock ring, mobile pressure ring, lock ring sheath, lock ring is positioned at lock ring sheath and mobile pressure ring connection of thread, and lock ring is processed with internal thread and open slot and central tube upper external thread and is designed to single face zigzag step lock; The seat sealing mechanism is made up of mobile pressure ring, seat envelope shear pin, lock ring, lock ring sheath, and seat envelope shear pin is positioned at mobile pressure ring bottom, and lock ring sheath bottom and packing element join; Form releasing gadget by lock pawl, the shear pin of giving up, ball seat sliding sleeve and Supporting ring, the shear pin of giving up is positioned at lock pawl and lock ring sheath connecting part, lock pawl Lower Half threading links to each other with the central tube internal thread with open slot, and lock pawl lower inner surface is equipped with seat envelope and Supporting ring, forms in the lock pawl and supports.Than traditional 756-6 type, 251 type packers bigger improvement has been arranged, but the problem that exists is the function that packer does not have pack gravel and backwash oil well.
Three, summary of the invention
The purpose of this utility model provides a kind of open-hole horizontal well filling anti-sand instrument, and functions such as locking, sealing, grappling and pack gravel, backwash oil well are effectively combined, and overcomes effectively or avoids above-mentioned problems of the prior art.
Open-hole horizontal well filling anti-sand instrument described in the utility model comprises top connection, hydraulic mechanism, locking assembly, seal assembly, slip insert grappling assembly, lower contact; The locking assembly comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism and four parts of releasing gadget, wherein retaining mechanism comprises central tube, lock ring, mobile pressure ring, lock ring sheath composition, lock ring is positioned at lock ring sheath and mobile pressure ring junction, horse mouth screw thread and open slot in lock ring is processed with, and the horse mouth screw thread that is provided with fishing joint forms step lock, the seat sealing mechanism is made up of mobile pressure ring, shop bolt, lock ring, lock ring sheath, upper cone, slip insert shell and lower cone, shop bolt is positioned at mobile pressure ring bottom, and lock ring sheath bottom and packing element join; Separate sealing mechanism and comprise fishing joint, deblocking shear pin, central tube, lock ring, fishing joint and cooperates with central tube top concave, convex between central tube and lock ring, and the bottom is provided with outer lug boss and deblocking shear pin hole; Described going up between the lower contact is connected with the filling central tube, form a toroidal cavity between this filling central tube and the central tube, the bottom of lower cone is the lengthening cylinder, this cylinder radially offer through hole, the outside of through hole has the backwash ring set to go into sealing, on the toroidal cavity, down respectively with mobile pressure ring inner chamber and lower cone on through hole connect, the bottom of described lower cone connects the filling tube, filling tube bottom links to each other with connector, the filling tube is provided with the filling mouth, in the bottom of filling mouth by connector and central tube, in the annular space that the filling tube is formed spring is housed, in the close filling central tube of lower contact, ball seat is housed, and described filling central tube is near on the filling tube filling mouth position, is provided with and the through hole of filling mouth equal number is with spring body and supports mutually between backwash ring and filling tube.
Wherein, described ball seat is a cylindrical tube, and its upper port is the arc sphere, forms with spheroid to be sealed and matched, and slides between lower cone and the filling central tube to cooperate.Described ball seat is fixed by pin and filling central tube.The bottom of described lock ring sheath joins by upper isolating ring and cartridge.Radially be provided with at least 2 through holes on the lengthening cylinder of described lower cone.Described filling tube middle part radially is provided with at least 2 filling mouths.Described mobile pressure ring top is provided with at least 2 through holes.
The utility model has compared with prior art on the function basis that keeps the suspension back-off packer, once extruding of gravel, flow pack and backwash oil well function are effectively combined and increase work efficiency greatly, reduce advantages such as construction operation program.
Four, description of drawings
Accompanying drawing is a kind of overall structure schematic diagram of the present utility model.
Five, the specific embodiment
Consult accompanying drawing, a kind of open-hole horizontal well filling anti-sand instrument comprises top connection 1, hydraulic mechanism, locking assembly, seal assembly, slip insert grappling assembly, lower contact 30; The locking assembly comprises retaining mechanism, the seat sealing mechanism, separate four parts of sealing mechanism and releasing gadget, wherein retaining mechanism comprises central tube 10, lock ring 9, mobile pressure ring 6, lock ring sheath 11 is formed, lock ring 9 is positioned at lock ring sheath and mobile pressure ring junction, horse mouth screw thread and open slot in lock ring is processed with, and the horse mouth screw thread that is provided with fishing joint 7 forms step lock, the seat sealing mechanism is by mobile pressure ring 6, shop bolt 8, lock ring 9, lock ring sheath 11, upper cone 17, slip insert shell 18 and lower cone 21 are formed, shop bolt 8 is positioned at mobile pressure ring bottom, and lock ring sheath 11 bottoms and packing element 15 join; Separate sealing mechanism and comprise fishing joint 7, deblocking shear pin 12, central tube 10, lock ring 9, fishing joint 7 and cooperates with central tube top concave, convex between central tube and lock ring, and the bottom is provided with outer lug boss and deblocking shear pin hole; Be connected with filling central tube 2 between the last lower contact, form a toroidal cavity between this filling central tube and the central tube 10, the bottom of lower cone 21 is the lengthening cylinder, this cylinder radially offer through hole, the outside of through hole has backwash ring 22 to be inserted in sealing, on the toroidal cavity, down respectively with mobile pressure ring 6 inner chambers and lower cone on through hole connect, the bottom of lower cone connects filling tube 24, filling tube bottom links to each other with connector 29, the filling tube is provided with the filling mouth, in the bottom of filling mouth by connector 29 and filling central tube 2, in the annular space that filling tube 24 is formed spring 28 and sealing drum 27 are housed, in the close filling central tube 2 of lower contact 30, ball seat 25 is housed, the filling central tube is near on the filling tube filling mouth position, be provided with the through hole with filling mouth equal number, be with spring body 23 between backwash ring 22 and the filling tube 24 and support mutually.
During work, at first instrument is lowered to projected depth, installs well head, positive well-flushing, the oil pipe pitching is suppressed 6MPa seat envelope to ball seat 25, voltage stabilizing 8-12MPa3 minute, be forced into 12-22MPa open fill hole.Secondly, unload well head, on carry tubing string and just changeing more than 25 circles, pour out the filling tubing string, put back to tubing string after the affirmation and pressurize 3 tons, at this moment, inside and outside pack hole alignment, positive well-flushing, valve-off after the sleeve pipe water outlet begins to add sandfilling, when stowing pressure well-flushing immediately behind the rated value, wash out sand grains in the tubing and casing, trip out the whole fill tubing string at last, finish the filling anti-sand operation.
Claims (7)
1. an open-hole horizontal well filling anti-sand instrument comprises top connection, hydraulic mechanism, locking assembly, seal assembly, slip insert grappling assembly, lower contact; The locking assembly comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism and four parts of releasing gadget, wherein retaining mechanism comprises central tube, lock ring, mobile pressure ring, lock ring sheath, lock ring is positioned at lock ring sheath and mobile pressure ring junction, horse mouth screw thread and open slot in lock ring is processed with, and the horse mouth screw thread that is provided with fishing joint forms step lock, the seat sealing mechanism is made up of mobile pressure ring, shop bolt, lock ring, lock ring sheath, upper cone, slip insert shell and lower cone, shop bolt is positioned at mobile pressure ring bottom, and lock ring sheath bottom and packing element join; Separate sealing mechanism and comprise fishing joint, deblocking shear pin, central tube, lock ring, fishing joint and cooperates with central tube top concave, convex between central tube and lock ring, and the bottom is provided with outer lug boss and deblocking shear pin hole; It is characterized in that described going up between the lower contact is connected with the filling central tube, form a toroidal cavity between this filling central tube and the central tube, the bottom of lower cone is the lengthening cylinder, this cylinder radially offer through hole, the outside of through hole has the backwash ring set to go into sealing, on the toroidal cavity, down respectively with mobile pressure ring inner chamber and lower cone on through hole connect, the bottom of described lower cone connects the filling tube, filling tube bottom links to each other with connector, the filling tube is provided with the filling mouth, in the bottom of filling mouth by connector and central tube, in the annular space that the filling tube is formed spring is housed, near in the filling central tube of lower contact, ball seat is housed, described filling central tube is near on the filling tube filling mouth position, be provided with the through hole with filling mouth equal number, between backwash ring and filling tube, be with spring body and support mutually.
2. open-hole horizontal well filling anti-sand instrument according to claim 1 is characterized in that described ball seat is a cylindrical tube, and its upper port is the arc sphere, forms with spheroid to be sealed and matched, and slides between lower cone and the filling central tube to cooperate.
3. open-hole horizontal well filling anti-sand instrument according to claim 1 and 2 is characterized in that described ball seat is fixed by pin and filling central tube.
4. open-hole horizontal well filling anti-sand instrument according to claim 1 is characterized in that the bottom of described lock ring sheath joins by upper isolating ring and cartridge.
5. open-hole horizontal well filling anti-sand instrument according to claim 1 is characterized in that radially being provided with at least 2 through holes on the lengthening cylinder of described lower cone.
6. open-hole horizontal well filling anti-sand instrument according to claim 1 is characterized in that described filling tube middle part radially is provided with at least 2 filling mouths.
7. open-hole horizontal well filling anti-sand instrument according to claim 1 is characterized in that described mobile pressure ring top is provided with at least 2 through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200251749U CN201062501Y (en) | 2007-07-12 | 2007-07-12 | Barefoot horizontal well packing sand-proof tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200251749U CN201062501Y (en) | 2007-07-12 | 2007-07-12 | Barefoot horizontal well packing sand-proof tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062501Y true CN201062501Y (en) | 2008-05-21 |
Family
ID=39450872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200251749U Expired - Fee Related CN201062501Y (en) | 2007-07-12 | 2007-07-12 | Barefoot horizontal well packing sand-proof tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062501Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816332A (en) * | 2017-09-15 | 2018-03-20 | 中国石油天然气股份有限公司 | A kind of slip-type back-up sand eyelid retractor |
| CN111535775A (en) * | 2020-05-21 | 2020-08-14 | 济南鸿泰华丰机械有限公司 | Adjustable constant pressure washable well packer |
| CN111927404A (en) * | 2020-10-15 | 2020-11-13 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
-
2007
- 2007-07-12 CN CNU2007200251749U patent/CN201062501Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816332A (en) * | 2017-09-15 | 2018-03-20 | 中国石油天然气股份有限公司 | A kind of slip-type back-up sand eyelid retractor |
| CN111535775A (en) * | 2020-05-21 | 2020-08-14 | 济南鸿泰华丰机械有限公司 | Adjustable constant pressure washable well packer |
| CN111927404A (en) * | 2020-10-15 | 2020-11-13 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN111927404B (en) * | 2020-10-15 | 2020-12-18 | 东营市蕴东石油科技有限公司 | Gravel packing tool capable of being used while being flushed |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
| CN113638712B (en) * | 2021-08-30 | 2024-05-28 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Qingdao Ruixin Petroleum Equipment Manufacturing Co., Ltd. Assignor: Kong Lisheng Contract record no.: 2010990000156 Denomination of utility model: Barefoot horizontal well packing sand-proof tool Granted publication date: 20080521 License type: Exclusive License Record date: 20100330 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20160712 |