CN204457578U - Packer - Google Patents

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Publication number
CN204457578U
CN204457578U CN201420807391.3U CN201420807391U CN204457578U CN 204457578 U CN204457578 U CN 204457578U CN 201420807391 U CN201420807391 U CN 201420807391U CN 204457578 U CN204457578 U CN 204457578U
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CN
China
Prior art keywords
packing
pushing
packer
central tube
sleeve
Prior art date
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Active
Application number
CN201420807391.3U
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Chinese (zh)
Inventor
袁新生
田志华
杨新克
陈禹欣
董小卫
南荣丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
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Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201420807391.3U priority Critical patent/CN204457578U/en
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Publication of CN204457578U publication Critical patent/CN204457578U/en
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Abstract

The utility model provides a kind of packer, comprising: central tube, comprises central lumen; First packing element and the second packing element, be fixed on the outer wall of central tube vertically at intervals; First packing element pushing part, to be sleeved on central tube and to abut with the first packing element; Second packing element pushing part, to be sleeved on central tube and to abut with the second packing element; Sleeve, be sleeved on central tube outside and between the first packing element and the second packing element, the first packing element pushing part, the Packed driving cavity of tool between the second packing element pushing part and sleeve; Central tube offers the flowing hole being communicated with central lumen and driving cavity.When packer effect under the effect of hydraulic coupling driving cavity, first packing element and the second packing element expand simultaneously, two seal points are formed between the inwall of packer and pipeline to be sealed, packing element expansion ratio greatly and not easily relax, packer has the ability of bidirectional bearing, the irregular bore hole borehole wall can be applicable to better, play the effect of sealing more reliably.

Description

Packer
Technical field
The utility model relates to oil exploration and digging field, more specifically, relates to a kind of packer.
Background technology
Current horizontal well open hole packer and sliding sleeve staged fracturing technology are widely used in oil, the gas development field in each oil field, and packer, especially open hole packer is this technology key instrument.Packer is mainly divided into two kinds according to different operating principles, is compression packer and inflatable packer respectively, and due to two kinds of packer sealing modes differences, operating principle is different, and applicable elements is equal, thus all has limitation separately.Wherein compression packer is when irregular uncased wellbore place sets, and packing element pit shaft of cannot fitting completely can occur and cause poorly sealed problem.And there is bearing capacity difference, problem for the supporting capacity deficiency of bidirectional load in inflatable packer.
Utility model content
The utility model aims to provide a kind of packer, to solve the problem that packer of the prior art well can not be applicable to irregular uncased wellbore bidirectional bearing.
For solving the problems of the technologies described above, the utility model provides a kind of packer, comprising: central tube, comprises central lumen; First packing element and the second packing element, be fixed on the outer wall of central tube vertically at intervals; First packing element pushing part, to be sleeved on central tube and to abut with the first packing element; Second packing element pushing part, to be sleeved on central tube and to abut with the second packing element; Sleeve, be sleeved on central tube outside and between the first packing element and the second packing element, the first packing element pushing part, the Packed driving cavity of tool between the second packing element pushing part and sleeve; Central tube offers the flowing hole being communicated with central lumen and driving cavity.
Further, packer also comprises: piston, and centrally the axis of pipe is slidably disposed between the first packing element pushing part and the second packing element pushing part, piston, formation driving cavity between sleeve and the second packing element pushing part; Piston is connected with the first packing element pushing part; Sleeve is connected with the second packing element pushing part.
Further, a section of coordinating with the first packing element in the first packing element pushing part is tapered, and the first packing element one section of coordinating with the conical section of the first packing element pushing part has the inner chamber of taper; One section of coordinating with the second packing element in second packing element pushing part is tapered, and the second packing element one section of coordinating with the conical section of the second packing element pushing part has the inner chamber of taper.
Further, packer also comprises locking device, and locking device and piston and sleeve connection, locking device has the locking structure for stoping piston and sleeve move toward one another.
Further, locking device comprises lock ring, and lock ring to be set on piston and to abut with sleeve, forms locking structure between the inner surface of lock ring and the external surface of piston.
Further, locking device also comprises lock ring cover, and lock ring cover is set in the outside of lock ring and is fixedly connected with sleeve.
Further, packer also comprises the stop safeties for preventing piston self from moving, and stop safeties are arranged between piston and sleeve.
Further, packer also comprises: the first packing element pushing part, to be set on central tube and between the first packing element and piston, the first packing element pushing part is connected with piston; Lock ring cover, is fixedly connected with sleeve, and one section of lock ring cover is set on the first packing element pushing part; Stop safeties are arranged between the first packing element pushing part and lock ring cover.
Further, the first packing element pushing part offers shear pin groove, lock ring puts and relatively offers shear pin hole with shear pin groove, and stop safeties comprise being arranged on and set shear pin in shear pin groove and shear pin hole.
Further, packer also comprises: the first packing element installation portion, is sleeved on central tube and with one end away from the second packing element of the first packing element and is fixedly connected with; Second packing element installation portion, is sleeved on central tube and with one end away from the first packing element of the second packing element and is fixedly connected with.
Further, packer also comprises: top connection, to be connected on central tube and to be connected with one end away from the first packing element of the first packing element installation portion; Lower contact, to be connected on central tube and to be connected with one end away from the second packing element of the second packing element installation portion.
Packer of the present utility model has two packing elements, when packer effect under the effect of hydraulic coupling driving cavity, the packing element at two ends is swollen by the extruding of packing element pushing part, first packing element and the second packing element expand simultaneously, two seal points are formed between the inwall of packer and pipeline to be sealed, packing element expansion ratio greatly and not easily relax, packer has the ability of bidirectional bearing, improve the reliability of sealing, therefore compared to existing technology in packer, separator of the present utility model can be applicable to the irregular bore hole borehole wall better, play the effect of sealing more reliably.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
What Fig. 1 diagrammatically illustrated packer in the utility model partly cuts open schematic diagram; And
Fig. 2 diagrammatically illustrates the partial enlarged drawing in the Fig. 1 in the utility model.
Reference numeral in figure: 10, central tube; 11, flowing hole; 21, the first packing element; 22, the second packing element; 30, piston; 40, sleeve; 41, cavity is driven; 51, the first packing element pushing part; 52, the second packing element pushing part; 61, lock ring; 62, lock ring cover; 70, shear pin is set; 81, the first packing element installation portion; 82, the second packing element installation portion; 91, top connection; 92, lower contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
The utility model provides a kind of packer, and as illustrated in fig. 1 and 2, this packer comprises: central tube 10, comprises central lumen; First packing element 21 and the second packing element 22, is fixed on the outer wall of central tube 10 vertically at intervals; First packing element pushing part 51, to be set on central tube 10 and to abut with the first packing element 21; Second packing element pushing part 52, to be set on central tube 10 and to abut with the second packing element 22; Sleeve 40, be set in central tube 10 outside and between the first packing element 21 and the second packing element 22, the Packed driving cavity 41 of tool between the first packing element pushing part 52, packing element pushing part 51, second and sleeve 40; Central tube 10 offers the flowing hole 11 being communicated with central lumen and driving cavity 41.
Packer of the present utility model has two packing elements, when packer effect under the effect of hydraulic coupling driving cavity 41, the packing element at two ends is swollen by the extruding of packing element pushing part, first packing element 21 and the second packing element 22 expand simultaneously, two seal points are formed between the inwall of packer and pipeline to be sealed, packing element expansion ratio greatly and not easily relax, packer has the ability of bidirectional bearing, improve the reliability of sealing, therefore compared to existing technology in packer, separator of the present utility model can be applicable to the irregular bore hole borehole wall better, play the effect of sealing more reliably.
Preferably, packer also comprises: piston 30, and centrally the axis of pipe 10 is slidably disposed between the first packing element pushing part 51 and the second packing element pushing part 52, piston 30, formation driving cavity 41 between sleeve 40 and the second packing element pushing part 52; Piston 30 is connected with the first packing element pushing part 51; Sleeve 40 is connected with the second packing element pushing part 52.As shown in Figure 1, after driving liquid is filled with driving cavity 41, under hydraulic-driven, piston 30 and sleeve 40 run towards both direction respectively, and promote the first packing element pushing part 51 and the second packing element pushing part 52 respectively, first packing element pushing part 51 and the second packing element pushing part 52 extrude again the first packing element 21 and the second packing element 22 respectively, and packing element is outwards expanded, thus seal shaft.
Preferably, as shown in Figure 1, a section of coordinating with the first packing element 21 in the first packing element pushing part 51 is tapered, and the first packing element 21 one section of coordinating with the conical section of the first packing element pushing part 51 has the inner chamber of taper; One section of coordinating with the second packing element 22 in second packing element pushing part 52 is tapered, and the second packing element 22 one section of coordinating with the conical section of the second packing element pushing part 52 has the inner chamber of taper.Taperedly between packing element with packing element pushing part coordinate, this makes when packing element pushing part is outwards moved, and packing element can more easily by jack-up, the centrally expanded radially of pipe 10, and fits with the inwall of pit shaft to be sealed.
Preferably, as shown in Figure 2, packer also comprises locking device, and locking device is connected with piston 30 and sleeve 40, and locking device has the locking structure for stoping piston 30 and sleeve 40 move toward one another.Locking device can stop piston 30 and sleeve 40 move toward one another, retracts, make seal failure after namely preventing packing element from losing thrust.
Preferably, locking device comprises lock ring 61, and lock ring 61 to be set on piston 30 and to abut with sleeve 40, forms locking structure between the inner surface of lock ring 61 and the external surface of piston 30.This locking structure can be the fit structures such as the projection of inverted cone-shaped and the fit structure of groove, or rubbing surface.
Preferably, locking device also comprises lock ring cover 62, and lock ring cover 62 is set in the outside of lock ring 61 and is fixedly connected with sleeve 40.In locking structure, lock ring cover 62, for providing radial location for lock ring 61, makes lock ring 61 clamping piston 30, prevents locking device to lose efficacy.
Preferably, packer also comprises the stop safeties for preventing piston 30 autonomous travel, and stop safeties are arranged between piston 30 and sleeve 40.Brake safety device for power-driven is used for lock piston 30 and sleeve 40 when packer does not start, and avoid the two to affect by external force and move and jack-up packing element in advance, such as when transferring packer, packing element is by jack-up, then packer just cannot continue to have moved.
Preferably, as shown in Figure 2, packer also comprises: the first packing element pushing part 51, to be set on central tube 10 and between the first packing element 21 and piston 30, the first packing element pushing part 51 is connected with piston 30; Lock ring cover 62, is fixedly connected with sleeve 40, and one section of lock ring cover 62 is sleeved on the first packing element pushing part 51; Stop safeties are arranged between the first packing element pushing part 51 and lock ring cover 62.More preferably, the first packing element pushing part 51 offers shear pin groove, lock ring cover 62 relatively offers shear pin hole with shear pin groove, stop safeties comprise being arranged on and set shear pin 70 in shear pin groove and shear pin hole.When driving cavity 41 topping up, hydraulic pressure meeting driven plunger 30 promotes the first packing element pushing part 51 and moves, and drive sleeve 40 is moved in the opposite direction simultaneously, therefore sets shear pin 70 and is cut off, thus the motion of liberation piston 30 and sleeve 40.
Preferably, as shown in Figure 1, packer also comprises: the first packing element installation portion 81, is sleeved on central tube 10 and with one end away from the second packing element 22 of the first packing element 21 and is fixedly connected with; Second packing element installation portion 82, is set on central tube 10 and with one end away from the first packing element 21 of the second packing element 22 and is fixedly connected with.More preferably, the first packing element installation portion 81 and the first packing element 21 are sulfided into one, and the second packing element installation portion 82 and the second packing element 22 are sulfided into one.
Preferably, packer also comprises: top connection 91, is connected on central tube 10 and with one end away from the first packing element 21 of the first packing element installation portion 81 and is connected; Lower contact 92, is connected on central tube 10 and with one end away from the second packing element 22 of the second packing element installation portion 82 and is connected.
Preferably, packer provides sealing between parts by organizing sealing ring more, wherein sealing ring is separately positioned between top connection 91 and central tube 10, between the first packing element installation portion 81 and central tube 10, between piston 30 and central tube 10, between piston 30 and sleeve 40, between the second packing element pushing part 52 and central tube 10, between the second packing element pushing part 52 and sleeve 40, between the second packing element installation portion 82 and central tube 10 and between lower contact 92 and central tube 10.
When using packer of the present utility model, first packer to be transferred in pit shaft to be sealed with drilling rod or oil pipe and install well head, then ball sealer is put into and pumping liquid, promoting ball sealer moves on the setting ball seat of this packer lower end, the liquid pumped into afterwards enters from flowing hole 11 and drives cavity 41, and driven plunger 30 and sleeve 40 move towards the first packing element 21 and the second packing element 22 respectively, promote two packing elements respectively by the first packing element pushing part 51 and the second packing element pushing part 52 and packing element is outwards expanded, to press close to the inwall of pit shaft to be sealed, thus seal shaft.In addition, in order to ensure the reliability of sealing, packer of the present utility model can use in multiple series connection.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (11)

1. a packer, is characterized in that, comprising:
Central tube (10), comprises central lumen;
First packing element (21) and the second packing element (22), be fixed on the outer wall of described central tube (10) vertically at intervals;
First packing element pushing part (51), is sleeved on described central tube (10) and goes up and abut with described first packing element (21);
Second packing element pushing part (52), is sleeved on described central tube (10) and goes up and abut with described second packing element (22);
Sleeve (40), be sleeved on the outside of described central tube (10) and be positioned between described first packing element (21) and described second packing element (22), described first packing element pushing part (51), the Packed driving cavity (41) of tool between described second packing element pushing part (52) and described sleeve (40); Described central tube (10) offers the flowing hole (11) being communicated with described central lumen and described driving cavity (41).
2. packer according to claim 1, is characterized in that, described packer also comprises:
Piston (30), axis along described central tube (10) is slidably disposed between described first packing element pushing part (51) and described second packing element pushing part (52), described piston (30), formation driving cavity (41) between described sleeve (40) and described second packing element pushing part (52);
Described piston (30) is connected with described first packing element pushing part (51);
Described sleeve (40) is connected with described second packing element pushing part (52).
3. packer according to claim 1, is characterized in that,
One section of coordinating with described first packing element (21) in described first packing element pushing part (51) is tapered, and described first packing element (21) a section of coordinating with the conical section of described first packing element pushing part (51) has the inner chamber of taper;
One section of coordinating with described second packing element (22) in described second packing element pushing part (52) is tapered, and described second packing element (22) a section of coordinating with the conical section of described second packing element pushing part (52) has the inner chamber of taper.
4. packer according to claim 2, it is characterized in that, described packer also comprises locking device, described locking device is connected with described piston (30) and described sleeve (40), and described locking device has the locking structure for stoping described piston (30) and described sleeve (40) move toward one another.
5. packer according to claim 4, it is characterized in that, described locking device comprises lock ring (61), described lock ring (61) is set in described piston (30) and goes up and abut with described sleeve (40), forms described locking structure between the inner surface of described lock ring (61) and the external surface of described piston (30).
6. packer according to claim 5, it is characterized in that, described locking device also comprises lock ring cover (62), and described lock ring cover (62) is set in the outside of described lock ring (61) and is fixedly connected with described sleeve (40).
7. packer according to claim 2, it is characterized in that, described packer also comprises the stop safeties for preventing described piston (30) autonomous travel, and described stop safeties are arranged between described piston (30) and described sleeve (40).
8. packer according to claim 7, is characterized in that, described packer also comprises:
First packing element pushing part (51), be set in described central tube (10) go up and be positioned between described first packing element (21) and described piston (30), described first packing element pushing part (51) is connected with described piston (30);
Lock ring cover (62), is fixedly connected with described sleeve (40), and one section of described lock ring cover (62) is set on described first packing element pushing part (51);
Described stop safeties are arranged between described first packing element pushing part (51) and described lock ring cover (62).
9. packer according to claim 8, it is characterized in that, described first packing element pushing part (51) offers shear pin groove, described lock ring cover (62) is upper relatively offers shear pin hole with described shear pin groove, and described stop safeties comprise being arranged on and set shear pin (70) in described shear pin groove and described shear pin hole.
10. packer according to claim 1, is characterized in that, described packer also comprises:
First packing element installation portion (81), is sleeved on described central tube (10) and goes up and be fixedly connected with one end away from described second packing element (22) of described first packing element (21);
Second packing element installation portion (82), is sleeved on described central tube (10) and goes up and be fixedly connected with one end away from described first packing element (21) of described second packing element (22).
11. packers according to claim 10, is characterized in that, described packer also comprises:
Top connection (91), is connected to described central tube (10) and goes up and be connected with one end away from described first packing element (21) of described first packing element installation portion (81);
Lower contact (92), is connected to described central tube (10) and goes up and be connected with one end away from described second packing element (22) of described second packing element installation portion (82).
CN201420807391.3U 2014-12-17 2014-12-17 Packer Active CN204457578U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420807391.3U CN204457578U (en) 2014-12-17 2014-12-17 Packer

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Application Number Priority Date Filing Date Title
CN201420807391.3U CN204457578U (en) 2014-12-17 2014-12-17 Packer

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CN204457578U true CN204457578U (en) 2015-07-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105672939A (en) * 2016-03-21 2016-06-15 中国石油天然气股份有限公司 Packer
CN105756609A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Packer
CN105804688A (en) * 2016-03-11 2016-07-27 新疆华隆油田科技股份有限公司 Compression type bidirectional pressure-bearing non-washable shaft packer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756609A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Packer
CN105804688A (en) * 2016-03-11 2016-07-27 新疆华隆油田科技股份有限公司 Compression type bidirectional pressure-bearing non-washable shaft packer
CN105804688B (en) * 2016-03-11 2018-09-28 新疆华隆油田科技股份有限公司 Compression bidirectional bearing can not flushing packer
CN105672939A (en) * 2016-03-21 2016-06-15 中国石油天然气股份有限公司 Packer
CN105672939B (en) * 2016-03-21 2018-05-04 中国石油天然气股份有限公司 Packer

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