CN202249925U - Water injection packer - Google Patents
Water injection packer Download PDFInfo
- Publication number
- CN202249925U CN202249925U CN2011204074082U CN201120407408U CN202249925U CN 202249925 U CN202249925 U CN 202249925U CN 2011204074082 U CN2011204074082 U CN 2011204074082U CN 201120407408 U CN201120407408 U CN 201120407408U CN 202249925 U CN202249925 U CN 202249925U
- Authority
- CN
- China
- Prior art keywords
- well
- sealing
- flushing
- ring
- central tube
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a water injection packer which comprises an upper joint, a lower joint, a central pipe, a well washing sleeve, a well washing piston, a sealing ring, a sealing gasket, a hydraulic anchor, a rubber tube, a spacing ring, an outer central pipe, a compression ring, a cone, a slip, a centralizing body, a friction block and the like, and adopts the working principle as follows: a pressure transfer hole is arranged in the upper part of the central pipe, and oil pressure can push the well washing piston to a lower position via the pressure transfer hole so as to enable the well washing piston to compress the sealing gasket; and a sealing groove is arranged in an inner hole in the upper part of the sealing ring, sealing is formed through an O-shaped ring and the central pipe, a thread is arranged at the lower end of the sealing ring and in threaded connection with the hydraulic anchor, and the sealing gasket is fixed in a step at the upper end of the hydraulic anchor for isolating the oil pressure with downward pressure. The water injection packer disclosed by the utility model can prevent the downward pressure from affecting the well washing piston, overcomes inter-layer great difference, and can open inter-layer crossflow through the well washing piston during water injection so as to ensure flexibility in opening of the well washing piston and realize reliability in sealing.
Description
Technical field
The utility model relates to the employed packer of oil field petroleum production engineering, especially a kind of novel washing well water injection packer.
Background technology:
The Y221 packer of band hydraulic anchor is strong with its pressure-bearing difference ability, dependable performance, advantage such as can repeatedly set and be widely used at oil gas field; The packer application that was improved to band well-flushing function afterwards is on separate layer water injection string; But in long-term application, expose some shortcomings: press down also and can promote the well-flushing piston stroking upward, open the well-flushing passage, interlayer difference is big; The well-flushing passage is opened when stopping annotating, crossflow.Though through updating of technician, effect still can not satisfy on-the-spot needs.
Summary of the invention
The novel purpose of this use is to the existing defective of prior art, provides a kind of bearing capacity strong, and sealing is reliable, the washing well packer.
The technical scheme that the utility model adopted is: the utility model mainly comprises upper and lower joint, central tube, well-flushing cover, well-flushing piston, joint ring, sealing mat, hydraulic anchor, packing element, spacer ring, exterior central tube, compression ring, cone, slips, centralizer body, brake pad etc.The utility model is by well-flushing part, anchor portion, hermetic unit, the slips part, sets upright part and forms.
The well-flushing part of the utility model is made up of well-flushing piston, joint ring, sealing mat, cone and central tube and exterior central tube etc.The inside and outside face of cylinder of well-flushing piston is provided with seal groove, forms sealing through O type circle and joint ring, well-flushing cover, and the conical surface of bottom and sealing mat form sealing; Central tube top is provided with pressure transmission hole, and oil pressure is pushed into the next through pressure transmission hole promotion well-flushing piston, and makes it to compress sealing mat; Be provided with seal groove in the endoporus of joint ring top and form sealing through O shape circle and central tube, with oil pressure with press down isolatedly, the middle part is provided with the hole, the lower end is provided with screw thread and is threaded with hydraulic anchor, and sealing mat is fixed in the step on the hydraulic anchor.Bleed off oil pressure during well-flushing; Pump truck is squeezed into sleeve pipe with flushing fluid; Promote the well-flushing piston stroking upward, the well-flushing passage is opened, hole, hydraulic anchor inner chamber and the central tube annular space of flushing fluid on well-flushing cover, joint ring; Through hole on inside and outside central tube annular space, the cone gets into packer bottom oil jacket annular space, and ball seat, tubing string return out well head through the tubing string bottom; Well-flushing finishes, restoring injection, and oil pressure promotes well-flushing piston return and compresses sealing mat, closes the well-flushing passage.
The hydraulic anchor that the anchor portion of the utility model is made up of anchor body, anchor fluke, pressing plate and spring, hydraulic anchor are arranged between well-flushing cover and the packing element, realize pressing down the promotion anchor fluke packer is anchored on the casing wall.
Other part of the utility model and common Y221 packer are basic identical, repeat no more.
The beneficial effect of the utility model is that the horizontal projected area that oil pressure acts on the well-flushing piston is to go up to press the several times that act on horizontal projected area on the well-flushing piston, has only complete venting oil pressure; Last pressure could promote the well-flushing piston and open, and oil pressure is closed the well-flushing piston, and joint ring completely cuts off oil pressure and presses down; Avoided pressing down the influence to the well-flushing piston, it is big to have overcome interlayer difference, and the well-flushing piston is opened crossflow when stopping annotating; Guaranteed the unlatching of well-flushing piston flexibly, sealing is reliable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1: the utility model general structure principle schematic.
Among the figure: compositions such as top connection 1, pressure transmission hole 3, well-flushing cover 4, central tube 5, well-flushing piston 6, joint ring 10, sealing mat 11, hydraulic anchor 12, packing element 13, spacer ring 14, exterior central tube 15, compression ring 16, cone 17, slips 18, centralizer body 19, brake pad 20, lower contact 21, O shape circle 2,7,8,9.
The specific embodiment
With reference to accompanying drawing, the utility model is made up of top connection 1, pressure transmission hole 3, well-flushing cover 4, central tube 5, well-flushing piston 6, joint ring 10, sealing mat 11, hydraulic anchor 12, packing element 13, spacer ring 14, exterior central tube 15, compression ring 16, cone 17, slips 18, centralizer body 19, brake pad 20, lower contact 21, O shape circle 2,7,8,9 etc.Its annexation does; Central tube 5 upper and lower ends are threaded with upper and lower joint 1,21 respectively; Pressure transmission hole 3 is arranged at central tube 5 tops, well-flushing cover 4, well-flushing piston 6, joint ring 10, hydraulic anchor 12, packing element 13, spacer ring 14, exterior central tube 15, compression ring 16, cone 17, slips 18, centralizer body 19, from top to bottom successively on the mounting center pipe 5; Top connection 1 upper end is provided with the oil pipe internal thread, is connected with oil pipe, and the bottom is provided with internal and external threads and is connected with well-flushing cover 4 with central tube 5 respectively, and the outside, lower end is provided with seal groove, forms sealing through O type circle 2 and well-flushing cover 4; Well-flushing overlaps 4 tops and is provided with screw thread and is connected with top connection 1; The bottom has the hole, and the lower end is threaded with hydraulic anchor 9, and the well-flushing piston 6 inside and outside faces of cylinder are processed with seal groove; Form sealing by O shape circle 7,9 and well-flushing cover 4, joint ring 10, the bottom is provided with the conical surface and sealing mat 11 forms sealing; Be provided with seal groove in the joint ring 10 top endoporus and form sealing through O shape circle 8 and central tube 5, the middle part is provided with the hole, and the lower end is provided with screw thread and is threaded with hydraulic anchor 12, sealing mat 11 is fixed in the step of hydraulic anchor 12 upper ends; Hydraulic anchor 12 upper ends are threaded with well-flushing cover 4, and the upper surface is provided with step and internal thread, and through the screw thread of joint ring 10 lower ends that sealing mat 11 is fixing, the lower end is threaded with exterior central tube 15; Packing element 13 is enclosed within on the exterior central tube 15 with spacer ring 14; Compression ring 16 is enclosed within on the exterior central tube 15, is threaded with cone 17; Cone 17 is enclosed within on the central tube 4, is threaded with compression ring 13, and the middle part is provided with through hole, and the lower end external surface is taper seat; Slips 18 is installed on the centralizer body 19, and brake pad 20 is installed on centralizer body 19 grooves, and centralizer body 19 bottoms are provided with on the boss that hangs over lower contact 21; Lower contact 21 is threaded with central tube, and outer symmetrical is processed with two boss, and the lower end is provided with tubing round thread, is connected with oil pipe.
When going into the well, centralizer body 19 hangs on the boss of lower contact 21.After arriving projected depth, on propose oil pipe dextrorotation, make the boss in the lower contact 21 produce centralizer body 19 hooks; Following drain line, this moment, cone 17 strutted slips 18 under the rubbing action of brake pad 20 and casing wall; Sting on sleeve pipe, continue drain line down, tubing string pressure promotes well-flushing cover 4, hydraulic anchor 12 compression packing elements 13 through top connection 1; Seal Oil cover annular space is realized setting.
During water filling, the pressure transmission hole 3 of oil pressure on central tube 5 promotes well-flushing piston 6 and is in the next compression seal pad 11, well-flushing pathway closure; When last pressure is higher than when pressing down, last pressure produces thrusts down to packing element 13, acts on the casing wall through compression ring 16, cone 17, slips 18, and packer can deblocking; When pressing down high and last pressures, press down packing element 13 is produced thrust, press down the anchor fluke that promotes simultaneously on the hydraulic anchor 12 and stretch out and sting on sleeve pipe, overcome last thrust, packer can deblocking; Guaranteed that packer has the good ability of holding bidirectional pressure difference when water filling.
During well-flushing; Bleed off oil pressure, pump truck is squeezed into sleeve pipe with flushing fluid, and it is up to promote well-flushing piston 6; The well-flushing passage is opened; The hole of flushing fluid on well-flushing cover 4, joint ring 10, hydraulic anchor with 12 with 5 annular spaces of central tube, 5,15 annular spaces of inside and outside central tube, the through hole entering packer bottom oil jacket annular space on the cone 17, ball seat, tubing string return out well head bottom the tubing string; Well-flushing finishes, the well-flushing piston 6 descending well-flushing passages of closing under the oil pressure effect.
When stopping annotating; The horizontal projected area that oil pressure acts on the well-flushing piston 6 is to go up to press the several times that act on horizontal projected area on the well-flushing piston 6, has only complete venting oil pressure, and last pressure could promote the 6 up unlatchings of well-flushing piston; Joint ring 10 completely cuts off oil pressure and presses down; The horizontal projected area of suppressing action on well-flushing piston 6 is almost nil, presses down to cause well-flushing piston 6 up, has guaranteed that the well-flushing channel seal is reliable.When last pressure is higher than when pressing down, last pressure produces thrusts down to packing element 13, acts on the casing wall through compression ring 16, cone 17, slips 18, and packer can deblocking; When pressing down high and last pressures, press down packing element 13 is produced thrust, press down the anchor fluke that promotes simultaneously on the hydraulic anchor 12 and stretch out and sting on sleeve pipe, overcome last thrust, packer can deblocking; Guaranteed that packer still has the good ability of holding bidirectional pressure difference when stopping annotating.
During deblocking, bleed off oil pressure, the ball seat, the tubing string inner chamber that press down through tubing string bottom discharge from well head, and the anchor fluke on the hydraulic anchor 12 is in the effect recover of spring, on carry tubing string, the compressive force that acts on the packing element 13 is removed, packing element retraction, packer deblocking.
Claims (2)
1. water injection packer; Form by top connection (1), pressure transmission hole (3), well-flushing cover (4), central tube (5), well-flushing piston (6), joint ring (10), sealing mat (11), hydraulic anchor (12), packing element (13), spacer ring (14), exterior central tube (15), compression ring (16), cone (17), slips (18), centralizer body (19), brake pad (20), lower contact (21) etc.; Its annexation does; Central tube (5) upper and lower end is threaded with upper and lower joint (1), (21) respectively, well-flushing cover (4), well-flushing piston (6), joint ring (10), hydraulic anchor (12), packing element (13), spacer ring (14), exterior central tube (15), compression ring (16), cone (17), slips (18), centralizer body (19), from top to bottom successively on the mounting center pipe (5); It is characterized in that: pressure transmission hole (3) is arranged at central tube (5) top.
2. washing well water injection packer according to claim 1; It is characterized in that being provided with in the endoporus of joint ring (10) top seal groove and form sealing through O shape circle (8) and central tube (5); The middle part is provided with the hole; The lower end is provided with screw thread and is threaded with hydraulic anchor (12), sealing mat (11) is fixed in the step of hydraulic anchor (12) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204074082U CN202249925U (en) | 2011-10-14 | 2011-10-14 | Water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204074082U CN202249925U (en) | 2011-10-14 | 2011-10-14 | Water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249925U true CN202249925U (en) | 2012-05-30 |
Family
ID=46111184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204074082U Expired - Fee Related CN202249925U (en) | 2011-10-14 | 2011-10-14 | Water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594092A (en) * | 2020-05-21 | 2020-08-28 | 山东虎力机械有限公司 | Packer backwashing use method |
-
2011
- 2011-10-14 CN CN2011204074082U patent/CN202249925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594092A (en) * | 2020-05-21 | 2020-08-28 | 山东虎力机械有限公司 | Packer backwashing use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201963249U (en) | Water injection packer capable of being used for washing well | |
| CN201705275U (en) | Packer capable of flushing well | |
| CN104213864B (en) | Protective device for packer rubber tube | |
| CN206035441U (en) | Hydraulic pressure deblocking water injection packer | |
| CN103397863B (en) | Double acting compression packer and using method thereof | |
| CN203130031U (en) | High-pressure hydraulic pressing crack packer | |
| CN104389548B (en) | High temperature high voltage resistant tubing packer | |
| CN209799937U (en) | Separate-layer water injection device of casing damage repair well | |
| CN211115910U (en) | Three-piston hydraulic balance washable well packer | |
| CN201526300U (en) | Water-plugging packer | |
| CN202249925U (en) | Water injection packer | |
| CN110847846B (en) | Packer for oil field exploitation | |
| CN201050329Y (en) | Well mouth pressure testing packer | |
| CN201857927U (en) | Dual-unsealing packer | |
| CN204040993U (en) | A kind of backwashing wells steel frame expanding water injecting packer | |
| CN203847057U (en) | Water injection packer | |
| CN105804688A (en) | Compression type bidirectional pressure-bearing non-washable shaft packer | |
| CN202788736U (en) | Two-way pressure-bearing packer | |
| CN213269839U (en) | Anticorrosion packer for gas injection well | |
| CN209586346U (en) | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention | |
| CN204283318U (en) | High temperature high voltage resistant tubing packer | |
| CN108825166A (en) | A kind of novel water injection packer | |
| CN211174046U (en) | Cable passing isolation device in sleeve | |
| CN210622762U (en) | Multifunctional oil testing packer | |
| CN109322640B (en) | Hydraulic packing communicating vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20121014 |