CN117722154B - Bypass open hole packer for horizontal well sub-bin filling - Google Patents
Bypass open hole packer for horizontal well sub-bin filling Download PDFInfo
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- CN117722154B CN117722154B CN202410179081.XA CN202410179081A CN117722154B CN 117722154 B CN117722154 B CN 117722154B CN 202410179081 A CN202410179081 A CN 202410179081A CN 117722154 B CN117722154 B CN 117722154B
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- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 210000000078 claw Anatomy 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 20
- 238000010008 shearing Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 6
- 239000004636 vulcanized rubber Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to the technical field of oilfield well completion sand prevention tools, in particular to a bypass open hole packer for horizontal well sub-bin filling, which comprises a packer body, wherein a first bypass channel, a second bypass channel, a third bypass channel, a fourth bypass channel and a fifth bypass channel which penetrate through the whole length are arranged on the packer body, the packer body comprises an upper bypass joint assembly, a seat sealing piston assembly, a sealing rubber cylinder assembly and a lower bypass joint assembly which are sequentially connected, the seat sealing piston assembly comprises a first upper connecting piece, a double-pass body, a piston linkage group, a first lower connecting piece and a force accumulating spring, a seat sealing liquid inlet hole is arranged on the outer wall of the double-pass body, at least three third bypass channels are arranged on the double-pass body along the length direction, and the bypass filling channels which penetrate through the whole body are arranged on the packer body.
Description
Technical Field
The invention relates to the technical field of oilfield completion sand control tools, in particular to a bypass open hole packer for horizontal well sub-bin filling.
Background
The open hole horizontal well can be through longer oil reservoir, the production capacity of single well has also had obvious promotion than traditional vertical well or inclined well, has got very extensive application in the exploitation of oil field in recent years. Currently, in terms of sand prevention, the main stream technology is to adopt a bypass screen pipe one-time filling technology, and a plurality of open hole packers are used for segmenting different oil reservoirs, so that layered water control or layered exploitation of different well sections is facilitated; the key of the sectional filling is a sectional packer which can not only effectively seal the interlayer section, but also be combined with the current mature horizontal well bypass screen pipe filling system to complete the filling function of the whole horizontal well section at one time.
The open hole packer is divided into: hydraulic expansion, compression, oil-in-water expansion, leather cup, etc. The conventional compression type is insufficient for the expansion rate of loose sandstone; the swelling period of the oil-contacting water-contacting swelling seal is longer, and the effect can not be judged; at present, the application case of the leather cup type in the naked eye in China is used in combination with a horizontal well filling process, and how to simply seal the naked eye is also a problem to be considered.
Disclosure of Invention
In view of the above, the invention aims to provide a bypass open hole packer for horizontal well sub-bin filling, so as to solve the problem that the existing open hole packer cannot meet due to the fact that in open hole horizontal well filling, the open hole packer is not only used for sub-section filling, but also used for layer water control and layer exploitation according to different layer sections.
Based on the above object, the invention provides a bypass open hole packer for horizontal well sub-bin filling, comprising a packer body, wherein the packer body is provided with a first bypass channel, a second bypass channel, a third bypass channel, a fourth bypass channel and a fifth bypass channel which penetrate through the whole length, the packer body comprises an upper bypass joint assembly, a set piston assembly, a sealing rubber cylinder assembly and a lower bypass joint assembly which are sequentially connected, and the set piston assembly comprises:
one end of the first upper connecting piece is fixedly connected with the upper bypass joint assembly;
One end of the double-pass body is fixedly connected with the inner wall of the first upper connecting piece far away from one end of the upper bypass joint assembly, a seat seal liquid inlet hole is formed in the outer wall of the double-pass body, and at least three third bypass channels are formed in the double-pass body along the length direction;
The piston linkage group is sleeved on the double-way body, one end of the piston linkage group is fixedly connected with the outer wall of the first upper connecting piece, and the other end of the piston linkage group is fixedly connected with the sealing rubber cylinder assembly;
the first lower connecting piece is sleeved at one end of the double-pass body, which is far away from the first upper connecting piece, the other end of the first lower connecting piece is fixedly connected with the sealing rubber cylinder assembly, and the first lower connecting piece is fixedly connected with the double-pass body;
And the power storage spring is sleeved on the double-way body, and two ends of the power storage spring respectively prop against the piston linkage group and the first lower connecting piece.
Preferably, the piston linkage group includes:
the first piston cylinder is sleeved on the double-way body, and one end of the first piston cylinder is fixedly connected with the outer wall of the first upper connecting piece;
The second piston cylinder is sleeved on the double-way body, and one end of the second piston cylinder is fixedly connected with the inner wall of one end, far away from the first upper connecting piece, of the first piston cylinder;
the third piston cylinder is sleeved on the double-way body, one end of the third piston cylinder is fixedly connected with the outer wall of one end, far away from the first piston cylinder, of the second piston cylinder, and the other end of the third piston cylinder is fixedly connected with the sealing rubber cylinder assembly;
The first piston body is arranged between the double-pass body and the first piston cylinder;
The connecting claw is sleeved on the double-way body, and one end of the connecting claw is in adaptive clamping connection with one end of the first piston body, which is far away from the first upper connecting piece;
The second piston body is sleeved on the double-way body, one end of the second piston body is fixedly connected with one end of the connecting claw, which is far away from the first piston body, the other end of the second piston body is propped against the force accumulating spring, and a through hole is formed in the second piston body;
The locking ring is arranged between the second piston body and the double-way body and is limited at one end, far away from the connecting claw, of the second piston body through a back cap;
and the locking groove is arranged on the outer wall of the double-pass body and is used for locking and sealing the locking ring.
Preferably, a shearing ring is arranged between the first piston cylinder and the double-pass body, the shearing ring is fixedly arranged in the first piston cylinder through a first pin, one end of the shearing ring is attached to one end of the first piston body, which is far away from the connecting claw, a protection piston is arranged between the first lower connecting piece and the third piston cylinder, and the protection piston is fixedly arranged on the first lower connecting piece through a second pin.
Preferably, the first O-shaped sealing rings are embedded on the inner wall and the outer wall of the first piston body, the second piston body and the protection piston.
Preferably, the upper bypass connection assembly includes:
the upper joint is fixedly connected with the bypass inlet pipe;
The welding pipe is sleeved on the bypass inlet pipe, and one end of the welding pipe is fixedly connected with the outer wall of the bypass inlet pipe;
an inner connecting pipe arranged in the welding pipe, one end of the inner connecting pipe is fixedly connected with the inner wall of the bypass inlet pipe at one end far away from the upper joint,
The connecting pipe is arranged in the welding pipe, one end of the connecting pipe is fixedly connected with the outer wall of the inner connecting pipe far away from one end of the bypass inlet pipe, the other end of the connecting pipe is fixedly connected with the first upper connecting piece, the outer wall of the connecting pipe is fixedly connected with one end of the welding pipe far away from the bypass inlet pipe, and a first bypass channel is formed among the bypass inlet pipe, the inner connecting pipe, the connecting pipe and the welding pipe;
The upper seat seal cylinder is arranged in the connecting pipe, one end of the upper seat seal cylinder is clamped at one end of the inner connecting pipe through a second O-shaped sealing ring, the other end of the upper seat seal cylinder is fixedly connected with the inner wall of the double-pass body, and a second bypass channel is formed between the connecting pipe and the upper seat seal cylinder;
and the bypass inlet pipe and the connecting pipe are respectively provided with at least one strip hole, and all the strip holes are used for communicating the bypass inlet pipe, the first bypass channel and the second bypass channel.
Preferably, the packing element subassembly includes:
one end of the second upper connecting piece is sleeved on the first lower connecting piece, and the second upper connecting piece is fixedly connected with the first lower connecting piece;
The inner central tube is arranged in the second upper connecting piece, one end of the inner central tube is fixedly connected with the inner wall of one end of the double-pass body, and the other end of the inner central tube is fixedly connected with the lower bypass joint assembly;
The rubber tube base tube is sleeved on the inner central tube, one end of the rubber tube base tube is fixedly connected with the inner wall of the second upper connecting piece, the other end of the rubber tube base tube is fixedly connected with the lower bypass joint assembly, and a fourth bypass channel is formed among the first lower connecting piece, the second upper connecting piece, the rubber tube base tube and the inner central tube;
the vulcanizing long rubber cylinder is sleeved on the rubber cylinder base pipe, and one end of the vulcanizing long rubber cylinder is fixedly connected with the inner wall of the second upper connecting piece;
The second lower connecting piece is sleeved on the vulcanized rubber tube, one end of the second lower connecting piece is fixedly connected with one end of the vulcanized rubber tube, which is far away from the second upper connecting piece, and the other end of the second lower connecting piece is fixedly connected with the lower bypass joint assembly.
Preferably, the second upper connecting piece is provided with at least three liquid through holes along the length direction.
Preferably, at least two centralizing sheets attached to the rubber tube base tube are fixedly arranged on the outer wall of the inner central tube.
Preferably, the lower bypass joint assembly includes:
one end of the lower seat seal cylinder is fixedly connected with the inner wall of the inner central tube;
The lower joint is sleeved on the lower seat seal sealing cylinder, one end of the lower joint is fixedly connected with the outer wall of the rubber cylinder base, and a fifth bypass channel is formed between the lower joint and the lower seat seal sealing cylinder;
the connecting sleeve is sleeved on the lower connector, and one end of the connecting sleeve is fixedly connected with the outer wall of the second lower connecting piece;
the anti-drop ring is sleeved on the lower connector and fixedly connected with the lower connector, and one end of the anti-drop ring is attached to one end of the connecting sleeve, which is far away from the second lower connecting piece.
Preferably, the outer wall of the anti-drop ring is provided with a set screw in a penetrating way, the set screw is in threaded connection with the anti-drop ring, and the anti-drop ring is in threaded connection with the lower joint and is screwed into and fixed by the set screw.
The invention has the beneficial effects that:
1. The invention is matched with the primary filling system of the currently mainstream naked eye horizontal well, is particularly suitable for well conditions of long naked eye sections requiring layered water control and development, and can still meet one-time filling operation after the setting of the bypass naked eye packer is finished by arranging the bypass filling channel penetrating through the whole packer body on the packer body, so that the construction period is short and the efficiency is high;
2. The inside of the seat sealing piston assembly is provided with an anti-advance seat sealing protection piston, so that the problem of falling failure caused by the advance expansion of a packer rubber cylinder when the packer is flushed down at the same time of a long open hole section is avoided; meanwhile, the piston linkage assembly in the seat sealing piston assembly can drive the locking ring to realize seat sealing and locking, so that the seat sealing device is simple and reliable;
3. the vulcanized long rubber cylinder is a long vulcanized expansion rubber cylinder, so that the problem that the conventional rubber cylinder is unreliable in sealing due to irregular borehole diameter in an open hole section is solved, and meanwhile, the bypass filling channel is met due to the special structural design of the double-pass body, and the packer setting liquid inlet channel is guaranteed.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic illustration of a bypass fitting assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure at A in FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a dual-port structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of a portion of a piston linkage assembly according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of FIG. 1 at B according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of FIG. 1 at C according to an embodiment of the present invention;
Fig. 8 is a schematic cross-sectional structure at D of fig. 1 according to an embodiment of the present invention.
Marked in the figure as:
1. A first bypass passage; 2. a second bypass passage; 3. a third bypass passage; 4. a fourth bypass passage; 5. a fifth bypass passage; 6. an upper bypass joint assembly; 7. a seat seal piston assembly; 8. a sealing rubber cylinder assembly; 9. a lower bypass joint assembly; 10. a first upper connector; 11. a double-body; 12. sealing the liquid inlet hole; 13. a first lower connector; 14. a power storage spring; 15. a first piston cylinder; 16. a second piston cylinder; 17. a third piston cylinder; 18. a first piston body; 19. a connecting claw; 20. a second piston body; 21. a through hole; 22. a locking ring; 23. a back cap; 24. a locking groove; 25. a shear ring; 26. a first pin; 27. a protection piston; 28. a second pin; 29. a first O-ring seal; 30. an upper joint; 31. a bypass inlet duct; 32. welding the pipe; 33. an inner connecting pipe; 34. a connecting pipe; 35. an upper seat seal sealing cylinder; 36. a second O-ring seal; 37. a slit hole; 38. a second upper connector; 39. an inner center tube; 40. a rubber tube base tube; 41. vulcanizing the long rubber cylinder; 42. a second lower connector; 43. a liquid passing hole; 44. a strengthening tablet; 45. a lower seat seal cylinder; 46. a lower joint; 47. connecting sleeves; 48. anti-slip ring; 49. and (5) setting the screw.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1 to 8, a bypass open hole packer for horizontal well sub-bin filling comprises a packer body, wherein a first bypass channel 1, a second bypass channel 2, a third bypass channel 3, a fourth bypass channel 4 and a fifth bypass channel 5 which penetrate through the whole length are arranged on the packer body, the packer body comprises an upper bypass joint assembly 6, a seat sealing piston assembly 7, a sealing rubber cylinder assembly 8 and a lower bypass joint assembly 9 which are sequentially connected, and the seat sealing piston assembly 7 comprises:
A first upper connecting member 10 having one end fixedly connected to the upper bypass joint assembly 6;
One end of the double-pass body 11 is fixedly connected with the inner wall of the first upper connecting piece 10, which is far away from one end of the upper bypass joint assembly 6, a seat seal liquid inlet hole 12 is formed in the outer wall of the double-pass body 11, and at least three third bypass channels 3 are formed in the double-pass body 11 along the length direction;
the piston linkage group is sleeved on the double-pass body 11, one end of the piston linkage group is fixedly connected with the outer wall of the first upper connecting piece 10, and the other end of the piston linkage group is fixedly connected with the sealing rubber cylinder assembly 8;
The first lower connecting piece 13 is sleeved at one end of the double-pass body 11, which is far away from the first upper connecting piece 10, the other end of the first lower connecting piece is fixedly connected with the sealing rubber cylinder assembly 8, and the first lower connecting piece 13 is fixedly connected with the double-pass body 11;
the power accumulating spring 14 is sleeved on the double-pass body 11, and two ends of the power accumulating spring 14 respectively prop against the piston linkage group and the first lower connecting piece 13.
By way of example, the upper bypass joint assembly 6 establishes a first bypass passage 1, i.e. a packing inlet passage, for connecting an external string of tubular strings such as bypass screens or water control screens to separate the packer inner and outer annulus packing passages; the seat seal piston assembly 7 realizes functions of insertion protection, hydraulic seat seal, seat seal locking and the like through a piston linkage group; the sealing rubber sleeve assembly 8 has strong adaptability to different well diameters, particularly the open hole horizontal well with irregular well diameters, and is reliable in sealing; the lower bypass joint assembly 9 establishes a fifth bypass passage 5, namely a filling outlet passage, for connecting an external string such as a bypass isolation valve; the first bypass channel 1, the second bypass channel 2, the third bypass channel 3, the fourth bypass channel 4 and the fifth bypass channel 5 can be used as filling channels of upper and lower layers after the bypass open hole packer body is set; the double-pass body 11 is of a double-pass structure, the third bypass channel 3 is an arc-shaped hole which is axially designed to be 3 sections of equal parts, and a seat seal liquid inlet hole 12 is arranged between every two arc-shaped holes, so that a packer liquid inlet channel is ensured, and a bypass filling channel is isolated; the power storage spring 14 is a cylindrical helical compression spring with two ends tightly, and can provide auxiliary thrust for the piston linkage group after the packer is set, so that the blocking phenomenon is avoided.
As an alternative embodiment, the piston linkage set includes:
The first piston cylinder 15 is sleeved on the double-pass body 11, and one end of the first piston cylinder 15 is fixedly connected with the outer wall of the first upper connecting piece 10;
the second piston cylinder 16 is sleeved on the double-pass body 11, and one end of the second piston cylinder 16 is fixedly connected with the inner wall of one end, far away from the first upper connecting piece 10, of the first piston cylinder 15;
The third piston cylinder 17 is sleeved on the double-pass body 11, one end of the third piston cylinder 17 is fixedly connected with the outer wall of one end, far away from the first piston cylinder 15, of the second piston cylinder 16, and the other end of the third piston cylinder is fixedly connected with the sealing rubber cylinder assembly 8;
a first piston body 18 disposed between the double-pass body 11 and the first piston cylinder 15;
the connecting claw 19 is sleeved on the double-pass body 11, and one end of the connecting claw 19 is in adaptive clamping connection with one end of the first piston body 18, which is far away from the first upper connecting piece 10;
The second piston body 20 is sleeved on the double-pass body 11, one end of the second piston body 20 is fixedly connected with one end of the connecting claw 19, which is far away from the first piston body 18, the other end of the second piston body is propped against the power accumulating spring 14, and a through hole 21 is formed in the second piston body 20;
a locking ring 22, which is arranged between the second piston body 20 and the double-pass body 11, wherein the locking ring 22 is limited at one end of the second piston body 20 far away from the connecting claw 19 through a back cap 23;
A locking groove 24 is provided on the outer wall of the double-body 11, the locking groove 24 being used for locking and sealing the locking ring 22.
For example, after the packer is set, the locking ring 22 moves to the locking groove 24 to enable the piston linkage group to be locked and sealed, the first piston cylinder 15, the second piston cylinder 16 and the third piston cylinder 17 are connected in sequence in a threaded mode, the clamping wall between the two-way body 11 and the three piston cylinders is a piston cavity, the second piston body 20 is provided with a through hole 21, a liquid inlet channel is provided for naked eye packer setting, the locking ring 22 is limited in the second piston body 20 through a back cap 23, the locking ring moves to a locking position under the combined action of the piston linkage group and the power storage spring 14, one end of the connecting claw 19 is designed to be a thread, the other end of the connecting claw is designed to be an elastic claw structure, and the top of the elastic claw is of a protruding structure, so that the first piston body 18 and the second piston body 20 are conveniently connected.
As an alternative embodiment, a shear ring 25 is disposed between the first piston cylinder 15 and the double-pass body 11, the shear ring 25 is fixed in the first piston cylinder 15 by a first pin 26, one end of the shear ring 25 is attached to one end of the first piston body 18, which is far away from the connecting claw 19, a protection piston 27 is disposed between the first lower connecting piece 13 and the third piston cylinder 17, and the protection piston 27 is fixed on the first lower connecting piece 13 by a second pin 28.
For example, the first pin 26 and the second pin 28 are made of brass, and can be sheared under a small pressure, a slit hole is formed in the upper end of the first piston cylinder 15, and when the first pin 26 is sheared, the slit hole can be used as a motion drainage hole of the piston linkage group and the shearing ring 25, and meanwhile, large-particle rock fragments in an open hole well can be prevented from entering the piston cavity by the small size of the slit.
As an alternative embodiment, the first piston body 18, the second piston body 20 and the inner and outer walls of the protection piston 27 are embedded with a first O-ring 29.
For example, the inner and outer sides of the first piston body 18 are sealed with the piston cavity by the first O-ring 29, the inner ring of the second piston body 20 is sealed with an O-ring, and the outer ring is sealed with vulcanized rubber, so that the problem of falling off of the rubber ring when the second piston body 20 is separated from the sealing surface can be avoided.
As an alternative embodiment, the upper bypass connection assembly includes:
An upper joint 30, one end of which is provided with a bypass inlet pipe 31, the upper joint 30 being fixedly connected with the bypass inlet pipe 31;
The welding pipe 32 is sleeved on the bypass inlet pipe 31, and one end of the welding pipe 32 is fixedly connected with the outer wall of the bypass inlet pipe 31;
An inner connecting pipe 33 arranged inside the welding pipe 32, one end of the inner connecting pipe 33 is fixedly connected with the inner wall of the bypass inlet pipe 31 at one end far away from the upper joint 30,
A connecting pipe 34 disposed inside the welding pipe 32, wherein one end of the connecting pipe 34 is fixedly connected with the outer wall of the inner connecting pipe 33, which is far away from one end of the bypass inlet pipe 31, the other end of the connecting pipe 34 is fixedly connected with the first upper connecting piece 10, the outer wall of the connecting pipe 34 is fixedly connected with one end of the welding pipe 32, which is far away from the bypass inlet pipe 31, and a first bypass channel 1 is formed among the bypass inlet pipe 31, the inner connecting pipe 33, the connecting pipe 34 and the welding pipe 32;
An upper seat seal cylinder 35, which is disposed inside the connecting pipe 34, wherein one end of the upper seat seal cylinder 35 is clamped at one end of the inner connecting pipe 33 through a second O-shaped seal ring 36, the other end is fixedly connected with the inner wall of the double-pass body 11, and a second bypass channel 2 is formed between the connecting pipe 34 and the upper seat seal cylinder 35;
Wherein, at least one strip hole 37 is arranged on the bypass inlet pipe 31 and the connecting pipe 34, and all strip holes 37 are used for communicating the bypass inlet pipe 31, the first bypass channel 1 and the second bypass channel 2.
For example, the upper joint 30, the bypass inlet pipe 31, the inner connecting pipe 34 and the connecting pipe 34 are sequentially screwed, and the welding pipe 32 penetrates into the connecting assembly and then is welded at a continuous stage, so that the first bypass passage 1 can be established; when the bypass screen pipe is connected with the external bypass screen pipe, the bypass screen pipe is firstly spliced with the internal connecting pipe 34 and then is in threaded connection with the upper joint 30, so that the establishment of the second bypass channel 2 is ensured; the bypass inlet pipe 31 and the connecting pipe 34 are respectively provided with strip holes 37, and the filling sand can pass through the strip holes 37; the inner sealing surface of the upper seat sealing cylinder 35 is a finished surface and can be matched and sealed with an external seat sealing tool, so that the packer body is set.
As an alternative embodiment, the packing element assembly 8 includes:
A second upper connecting piece 38, one end of which is sleeved on the first lower connecting piece 13, and the second upper connecting piece 38 is fixedly connected with the first lower connecting piece 13;
an inner central tube 39 disposed inside the second upper connector 38, wherein one end of the inner central tube 39 is fixedly connected with the inner wall of one end of the double-pass body 11, and the other end is fixedly connected with the lower bypass joint assembly 9;
The rubber tube base tube 40 is sleeved on the inner central tube 39, one end of the rubber tube base tube 40 is fixedly connected with the inner wall of the second upper connecting piece 38, the other end of the rubber tube base tube is fixedly connected with the lower bypass joint assembly 9, and a fourth bypass passage 4 is formed among the first lower connecting piece 13, the second upper connecting piece 38, the rubber tube base tube 40 and the inner central tube 39;
A vulcanized long rubber tube 41 sleeved on the rubber tube base tube 40, wherein one end of the vulcanized long rubber tube 41 is fixedly connected with the inner wall of the second upper connecting piece 38;
The second lower connecting piece 42 is sleeved on the vulcanized rubber tube 41, one end of the second lower connecting piece 42 is fixedly connected with one end of the vulcanized rubber tube 41 away from the second upper connecting piece 38, and the other end of the second lower connecting piece 42 is fixedly connected with the lower bypass joint assembly 9.
For example, a rubber cavity is formed between the vulcanized long rubber 41 and the rubber base pipe 40, and the second piston body 20 is vulcanized and sealed in an open position when the packer body is initially lowered; when the packer body is in place, the wellhead is pressurized, liquid enters the piston cavity from the sealing liquid inlet hole 12 of the double-pass body 11, then the liquid is pressurized on the protection piston 27 through the through hole 21 on the second piston body 20, when the pressure reaches the shearing value for opening the second pin 28, the second pin 28 is sheared, the protection piston 27 is released, the liquid is connected on the vulcanized long rubber cylinder 41 to enter the rubber cylinder cavity, the rubber cylinder is inflated, when the sealing pressure exceeds the shearing value for closing the first pin 26, the first pin 26 is sheared, the shearing ring 25 is released, the piston linkage group moves upwards under the action of the first piston body 18 and the power storage spring 14, the locking ring 22 moves into the locking groove 24 of the double-pass body 11, the second piston body 20 is vulcanized and sealed into the closing position, and the rubber cylinder cavity is locked, so that the sealing process of the packer body is completed.
As an alternative embodiment, the second upper connector 38 is provided with at least three liquid through holes 43 along the length direction.
For example, the second upper connector 38 is axially drilled with a fluid passage 43, and when the second pin 28 shears, the protection piston 27 is released and the seat fluid enters the packing element cavity through the fluid passage 43.
As an alternative embodiment, at least two centralizing pieces 44 attached to the rubber tube base pipe 40 are fixedly arranged on the outer wall of the inner central pipe 39.
For example, the bottom circumference of the inner center tube 39 is welded with a centering plate 44 to avoid the problem of non-concentricity due to too long pipe string of the cantilever.
As an alternative embodiment, the lower bypass joint assembly 9 comprises:
a lower seat seal cylinder 45, one end of which is fixedly connected with the inner wall of the inner central tube 39;
The lower joint 46 is sleeved on the lower seat sealing cylinder 45, one end of the lower joint 46 is fixedly connected with the outer wall of the rubber cylinder base, and a fifth bypass channel 5 is formed between the lower joint 46 and the lower seat sealing cylinder 45;
the connecting sleeve 47 is sleeved on the lower joint 46, and one end of the connecting sleeve 47 is fixedly connected with the outer wall of the second lower connecting piece 42;
the anti-falling ring 48 is sleeved on the lower joint 46, the anti-falling ring 48 is fixedly connected with the lower joint 46, and one end of the anti-falling ring 48 is attached to one end of the connecting sleeve 47, which is far away from the second lower connecting piece 42.
As an alternative embodiment, a set screw 49 is threaded on the outer wall of the anti-drop ring 48, the set screw 49 is in threaded connection with the anti-drop ring 48, and the anti-drop ring 48 is in threaded connection with the lower joint 46 and screwed into and fixed by the set screw 49.
For example, when connected with the bypass isolation valve, the lower seat seal cylinder 45 is inserted into the sealing part of the bypass isolation valve, and the lower joint 46 is in threaded connection with the joint of the bypass isolation valve; the interior of the lower seat sealing cylinder 45 is a finished surface which can be matched and sealed with an external seat sealing tool, so that the seat seals the bypass open hole packer body.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the invention is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a bypass bore hole packer for horizontal well divides storehouse to pack, includes the packer body, be equipped with on the packer body and run through first bypass passageway (1), second bypass passageway (2), third bypass passageway (3), fourth bypass passageway (4) and fifth bypass passageway (5) of whole length, the packer body is including last bypass joint assembly (6), seat seal piston assembly (7), packing element subassembly (8) and lower bypass joint assembly (9) that connect gradually, a serial communication port, seat seal piston assembly (7) include:
a first upper connecting piece (10), one end of which is fixedly connected with the upper bypass joint assembly (6);
One end of the double-pass body (11) is fixedly connected with the inner wall of the first upper connecting piece (10) far away from one end of the upper bypass joint assembly (6), a seat seal liquid inlet hole (12) is formed in the outer wall of the double-pass body (11), and at least three third bypass channels (3) are formed in the double-pass body (11) along the length direction;
The piston linkage group is sleeved on the double-pass body (11), one end of the piston linkage group is fixedly connected with the outer wall of the first upper connecting piece (10), and the other end of the piston linkage group is fixedly connected with the sealing rubber cylinder assembly (8);
the first lower connecting piece (13) is sleeved at one end of the double-pass body (11) far away from the first upper connecting piece (10), the other end of the first lower connecting piece is fixedly connected with the sealing rubber cylinder assembly (8), and the first lower connecting piece (13) is fixedly connected with the double-pass body (11);
The power accumulating spring (14) is sleeved on the double-pass body (11), and two ends of the power accumulating spring (14) respectively prop against the piston linkage group and the first lower connecting piece (13);
the piston linkage group comprises:
The first piston cylinder (15) is sleeved on the double-pass body (11), and one end of the first piston cylinder (15) is fixedly connected with the outer wall of the first upper connecting piece (10);
The second piston cylinder (16) is sleeved on the double-pass body (11), and one end of the second piston cylinder (16) is fixedly connected with the inner wall of one end, far away from the first upper connecting piece (10), of the first piston cylinder (15);
The third piston cylinder (17) is sleeved on the double-pass body (11), one end of the third piston cylinder (17) is fixedly connected with the outer wall of one end, far away from the first piston cylinder (15), of the second piston cylinder (16), and the other end of the third piston cylinder is fixedly connected with the sealing rubber cylinder assembly (8);
a first piston body (18) arranged between the double-pass body (11) and the first piston cylinder (15);
The connecting claw (19) is sleeved on the double-pass body (11), and one end of the connecting claw (19) is in fit and clamping connection with one end of the first piston body (18) far away from the first upper connecting piece (10);
The second piston body (20) is sleeved on the double-pass body (11), one end of the second piston body (20) is fixedly connected with one end of the connecting claw (19) away from the first piston body (18), the other end of the second piston body is propped against the force accumulating spring (14), and a through hole (21) is formed in the second piston body (20);
The locking ring (22) is arranged between the second piston body (20) and the double-pass body (11), and the locking ring (22) is limited at one end, far away from the connecting claw (19), of the second piston body (20) through a back cap (23);
a locking groove (24) arranged on the outer wall of the double-pass body (11), wherein the locking groove (24) is used for locking and sealing the locking ring (22);
A shearing ring (25) is arranged between the first piston cylinder (15) and the double-pass body (11), the shearing ring (25) is fixedly arranged in the first piston cylinder (15) through a first pin (26), one end of the shearing ring (25) is attached to one end of the first piston body (18) far away from the connecting claw (19), a protection piston (27) is arranged between the first lower connecting piece (13) and the third piston cylinder (17), and the protection piston (27) is fixedly arranged on the first lower connecting piece (13) through a second pin (28);
the upper bypass connection assembly includes:
An upper joint (30), one end of which is provided with a bypass inlet pipe (31), wherein the upper joint (30) is fixedly connected with the bypass inlet pipe (31);
The welding pipe (32) is sleeved on the bypass inlet pipe (31), and one end of the welding pipe (32) is fixedly connected with the outer wall of the bypass inlet pipe (31);
An inner connecting pipe (33) arranged inside the welding pipe (32), one end of the inner connecting pipe (33) is fixedly connected with the inner wall of the bypass inlet pipe (31) at one end far away from the upper joint (30),
The connecting pipe (34) is arranged in the welding pipe (32), one end of the connecting pipe (34) is fixedly connected with the outer wall of the inner connecting pipe (33) far away from one end of the bypass inlet pipe (31), the other end of the connecting pipe is fixedly connected with the first upper connecting piece (10), the outer wall of the connecting pipe (34) is fixedly connected with one end of the welding pipe (32) far away from the bypass inlet pipe (31), and a first bypass channel (1) is formed among the bypass inlet pipe (31), the inner connecting pipe (33), the connecting pipe (34) and the welding pipe (32);
An upper seat seal cylinder (35) arranged in the connecting pipe (34), wherein one end of the upper seat seal cylinder (35) is clamped at one end of the inner connecting pipe (33) through a second O-shaped sealing ring (36), the other end of the upper seat seal cylinder is fixedly connected with the inner wall of the double-pass body (11), and a second bypass channel (2) is formed between the connecting pipe (34) and the upper seat seal cylinder (35);
wherein, the bypass inlet pipe (31) and the connecting pipe (34) are respectively provided with at least one strip hole (37), and all strip holes (37) are used for communicating the bypass inlet pipe (31), the first bypass channel (1) and the second bypass channel (2);
the packing element subassembly (8) includes:
One end of the second upper connecting piece (38) is sleeved on the first lower connecting piece (13), and the second upper connecting piece (38) is fixedly connected with the first lower connecting piece (13);
An inner central tube (39) arranged in the second upper connecting piece (38), wherein one end of the inner central tube (39) is fixedly connected with the inner wall of one end of the double-pass body (11), and the other end of the inner central tube is fixedly connected with the lower bypass joint assembly (9);
The rubber tube base tube (40) is sleeved on the inner central tube (39), one end of the rubber tube base tube (40) is fixedly connected with the inner wall of the second upper connecting piece (38), the other end of the rubber tube base tube is fixedly connected with the lower bypass joint assembly (9), and a fourth bypass channel (4) is formed among the first lower connecting piece (13), the second upper connecting piece (38), the rubber tube base tube (40) and the inner central tube (39);
The vulcanizing long rubber cylinder (41) is sleeved on the rubber cylinder base pipe (40), and one end of the vulcanizing long rubber cylinder (41) is fixedly connected with the inner wall of the second upper connecting piece (38);
the second lower connecting piece (42) is sleeved on the vulcanized long rubber tube (41), one end of the second lower connecting piece (42) is fixedly connected with one end, far away from the second upper connecting piece (38), of the vulcanized long rubber tube (41), and the other end of the second lower connecting piece is fixedly connected with the lower bypass joint assembly (9);
The lower bypass joint assembly (9) comprises:
a lower seat seal cylinder (45), one end of which is fixedly connected with the inner wall of the inner central tube (39);
The lower joint (46) is sleeved on the lower seat sealing cylinder (45), one end of the lower joint (46) is fixedly connected with the outer wall of the rubber cylinder base pipe (40), and a fifth bypass channel (5) is formed between the lower joint (46) and the lower seat sealing cylinder (45);
The connecting sleeve (47) is sleeved on the lower joint (46), and one end of the connecting sleeve (47) is fixedly connected with the outer wall of the second lower connecting piece (42);
The anti-drop ring (48) is sleeved on the lower connector (46), the anti-drop ring (48) is fixedly connected with the lower connector (46), and one end of the anti-drop ring (48) is attached to one end of the connecting sleeve (47) far away from the second lower connecting piece (42).
2. The bypass open hole packer for horizontal well sub-tank filling according to claim 1, wherein the first piston body (18), the second piston body (20) and the protection piston (27) are embedded with first O-shaped sealing rings (29) on the inner wall and the outer wall.
3. A by-pass open hole packer for horizontal well sub-tank filling according to claim 1, characterized in that the second upper connection (38) is provided with at least three through-liquid holes (43) in length direction.
4. The bypass open hole packer for horizontal well sub-bin filling according to claim 1, wherein at least two centralizing plates (44) attached to the rubber tube base pipe (40) are fixedly arranged on the outer wall of the inner central pipe (39).
5. The bypass open hole packer for horizontal well sub-packing according to claim 1, wherein a set screw (49) is threaded on the outer wall of the anti-drop ring (48), the set screw (49) is in threaded connection with the anti-drop ring (48), and the anti-drop ring (48) is in threaded connection with the lower joint (46) and screwed into the lower joint through the set screw (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410179081.XA CN117722154B (en) | 2024-02-18 | 2024-02-18 | Bypass open hole packer for horizontal well sub-bin filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410179081.XA CN117722154B (en) | 2024-02-18 | 2024-02-18 | Bypass open hole packer for horizontal well sub-bin filling |
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| CN117722154A CN117722154A (en) | 2024-03-19 |
| CN117722154B true CN117722154B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410179081.XA Active CN117722154B (en) | 2024-02-18 | 2024-02-18 | Bypass open hole packer for horizontal well sub-bin filling |
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| RU2101463C1 (en) * | 1996-02-06 | 1998-01-10 | Май Павлович Снежко | Packer-type device for selective testing of beds |
| CN209261525U (en) * | 2018-12-10 | 2019-08-16 | 东营市瑞丰石油技术发展有限责任公司 | Static pressure type bypasses packer |
| CN110552667A (en) * | 2019-09-30 | 2019-12-10 | 东营市瑞丰石油技术发展有限责任公司 | Layered filling pipe column, layered water control pipe column and layered filling layered water control process |
| CN210738529U (en) * | 2019-09-30 | 2020-06-12 | 东营市瑞丰石油技术发展有限责任公司 | Ultra-light particle horizontal well sectional filling process tool and sectional water control process tool |
| CN111927379A (en) * | 2020-10-14 | 2020-11-13 | 东营市瑞丰石油技术发展有限责任公司 | Bypass packer |
| CN218624173U (en) * | 2022-11-08 | 2023-03-14 | 东营市瑞丰石油技术发展有限责任公司 | Bypass isolation valve assembly for segmental filling of open hole horizontal well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG10201510410YA (en) * | 2010-12-17 | 2016-01-28 | Exxonmobil Upstream Res Co | Crossover joint for connecting eccentric flow paths to concentric flow paths |
-
2024
- 2024-02-18 CN CN202410179081.XA patent/CN117722154B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2101463C1 (en) * | 1996-02-06 | 1998-01-10 | Май Павлович Снежко | Packer-type device for selective testing of beds |
| CN209261525U (en) * | 2018-12-10 | 2019-08-16 | 东营市瑞丰石油技术发展有限责任公司 | Static pressure type bypasses packer |
| CN110552667A (en) * | 2019-09-30 | 2019-12-10 | 东营市瑞丰石油技术发展有限责任公司 | Layered filling pipe column, layered water control pipe column and layered filling layered water control process |
| CN210738529U (en) * | 2019-09-30 | 2020-06-12 | 东营市瑞丰石油技术发展有限责任公司 | Ultra-light particle horizontal well sectional filling process tool and sectional water control process tool |
| CN111927379A (en) * | 2020-10-14 | 2020-11-13 | 东营市瑞丰石油技术发展有限责任公司 | Bypass packer |
| CN218624173U (en) * | 2022-11-08 | 2023-03-14 | 东营市瑞丰石油技术发展有限责任公司 | Bypass isolation valve assembly for segmental filling of open hole horizontal well |
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| Publication number | Publication date |
|---|---|
| CN117722154A (en) | 2024-03-19 |
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