CN203223203U - Hanging packer for open hole completion pipe string - Google Patents
Hanging packer for open hole completion pipe string Download PDFInfo
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- CN203223203U CN203223203U CN 201320199426 CN201320199426U CN203223203U CN 203223203 U CN203223203 U CN 203223203U CN 201320199426 CN201320199426 CN 201320199426 CN 201320199426 U CN201320199426 U CN 201320199426U CN 203223203 U CN203223203 U CN 203223203U
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- ring
- central tube
- back band
- packing element
- cone
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Abstract
The utility model relates to the technical field of oil and gas field open hole horizontal well multi-section fracture, in particular to a hanging packer for an open hole completion pipe string. The hanging packer for the open hole completion pipe string is composed of a center pipe, an upper guiding ring, a glued dowel, an upper clamping tile, an upper cone, a cutting dowel, an outer back band, an inner back band, an upper rubber sleeved check ring, a rubber barrel bearing ring, a rubber barrel, an upper rubber sleeve check ring, a lower cone, a lower clamping tile, a locking ring, a locking ring sleeve, an upper piston, an O-shaped ring, a splitting ring sleeve, a splitting ring, a lower piston, an upper setting sleeve, a lower setting sleeve, a lower guiding ring and a lower connector. The hanging packer for the open hole completion pipe string is mainly applied to open hole horizontal well multi-section fracture, the anchoring performance is reliable, the packer can resist high temperature and high pressure and reliably seal a large-scale casing pipe, and the maximum inner drift diameter can ensure that 20 fracture balls can pass through the packer to achieve maximization of the number of fractured layers.
Description
Technical field
The utility model relates to oil gas field open-hole horizontal well multistage fracturing technique field, particularly a kind of barefoot completion tubing string hanging packer.
Background technology
Open-hole horizontal well multiple fracturing technology is an advanced person's completion technique, is one of important well stimulation of low pressure, low-permeability oil gas reservoir development, and it has advantages such as plugging effect is good, downhole tool is few, operation is with strong points, construction cost is low.Barefoot completion can be realized the draining gas of full horizontal segment better, and this technology is used widely at present abroad.Horizontal bare hole well multistage fracturing has been North America shale gas pressure break exploitation major technique means at present.
Open-hole horizontal well multistage fracturing technology generally adopts open hole packer segmentation packing.Needs according to the shale gas reservoir exploitation, use packer that net horizontal section is separated into some sections, horizontal segment caudal end sliding sleeve is opened by pressure formula sliding sleeve during the fracturing construction, other sliding sleeve is opened by pitching, begin pitching step by step from the horizontal segment tail end second level, carry out pressing crack construction targetedly.
In bore hole pressure break completion tubular column, hanging packer also will guarantee its heat resisting and pressure resisting performance in straight well section sleeve pipe when hanging whole tail pipe string, reach the purpose that hangs tail pipe weight and sealing, hanging packer need keep imperial palace latus rectum so that the number of plies maximization that reaches pressure break by the pressure break ball as much as possible simultaneously.
And the properties of product of common packer can not satisfy the requirement of hanging tail pipe and sealing large scale sleeve pipe and keeping imperial palace latus rectum.For this reason, developed and be applicable to the novel hanging packer of open-hole horizontal well completion tubular column straight well section, made it in the transformation of open-hole horizontal well staged fracturing, have more practicality.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of barefoot completion tubing string hanging packer is provided, and its grappling dependable performance guarantees the packer high temperature high voltage resistant, can seal the large scale sleeve pipe reliably, imperial palace latus rectum can guarantee to reach the maximization of the pressure break number of plies by 20 pressure break balls.
For realizing above-mentioned technical purpose, the scheme that the utility model provides is: a kind of barefoot completion tubing string hanging packer comprises central tube and the packing element that is arranged on the central tube, wherein, the lower end of described central tube is threaded with lower contact, and fixes with dig-inning pin; The integral body that central tube and lower contact are linked to be is equipped with lead ring, upper slips, upper cone from top to bottom successively, go up outer back band, go up in back band, down in back band, down outer back band, lower cone, lower slips, lock ring cover, upper piston, split ring set, split ring, lower piston, upward setting sleeve, following setting sleeve and following lead ring; Described upward lead ring is threaded with central tube and fixes with dig-inning pin; Described upper slips and upper cone axially are enclosed within on the central tube, lead ring and central tube step on upper slips one end in contact, and the other end contacts with upper cone, and upper cone is fixed on the central tube by shear pin; Be provided with between described central tube and the packing element to hold and stay ring, this holds and stays ring to seal with " O " type circle at the packing element middle part and with central tube, the packing element two ends are inserted in interior back band, down interior back band respectively, upward outer back band, down outer back band constitute the packing element assembly, this packing element assembly is placed on the central tube, going up outer back band contacts with upper cone, lower cone and lower slips axially are enclosed within on the central tube, and lower cone one end contacts and is fixed on the central tube by shear pin with following outer back band; Described lock ring cover is connected with central tube by lock ring, and is fixed by shear pin and central tube, and lock ring puts end face and contacts with the lower slips end face; Be connected by the slipper seal of " O " type circle between described upper piston and the central tube; Described ring set and the lower piston split is fixed on the central tube by splitting ring, and lower piston is by " O " type circle center seal pipe; The described setting sleeve of going up is threaded with upper piston, and last setting sleeve, upper piston and lower piston all are connected with the central tube slipper seal by " O " type circle; Described down setting sleeve is threaded with last setting sleeve, is slipper seal between following setting sleeve and last setting sleeve, the lower contact and is connected; Described lead ring down is threaded with central tube and fixes with dig-inning pin.
And, having radially first pressure transmission hole and second pressure transmission hole on the described central tube, first pressure transmission hole is at upper piston and split between the ring set, and second pressure transmission hole is between last setting sleeve and lower contact.
And described central tube upper end is gingival cyst of mucous gland in the newborn button female thread structure.
And, described upper cone and upper slips cone match, lower cone and lower slips cone match.
And going up between interior back band and the down interior back band of described packing element assembly is provided with rubber sleeve back-up ring and following rubber sleeve back-up ring; The upward outer back band of described packing element assembly and last interior back band constitute soft metal ring back band, and the following outer back band of described packing element assembly and following interior back band constitute soft metal ring back band.
And the middle part of described packing element arranges packing element and holds and stay ring, and this packing element is provided with " O " type circle in the middle of holding the endoporus that stays ring, and it supports packing element heart portion and is beneficial to packing element and expands.Packing element holds and stays ring is cast iron quality.
And the part that contacts with the lock ring cover on the described central tube is provided with the up zigzag screw thread of guiding lock ring cover, and can only be up, can not be descending.
And described lock ring adopts the inside and outside toothing of single otch, and the lock ring cover is fixed in the groove of the notch of lock ring by shear pin.Lock ring follows lock ring cover to transmit pressure, and is up and Prssure lock fixed on the central tube.
And the described ring of splitting is open C ring or 2 C ring compositions.
And described upward setting sleeve, upper piston have " O " type circle back band with " O " type circle two ends that lower piston is connected with the central tube slipper seal, can reach the performance of good slipper seal.Should " O " type circle back band be the polytetrafluoroethylene (PTFE) material.
Barefoot completion tubing string of the present utility model is provided with two hydraulic cylinders and two pistons with hanging packer, after packer is lowered into the design level position, suppress by in managing, driving the two-stage piston cuts off lock ring to put shear pin simultaneously up, the crush seal packing element, burst slips interlock sleeve pipe, lock ring locking pressure is realized reliable grappling and sealing.This instrument guarantees packer high temperature high voltage resistant, positiver sealing large scale sleeve pipe, and imperial palace latus rectum can guarantee that reaching the pressure break number of plies by 20 pressure break balls maximizes.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A part enlarged drawing among Fig. 1.
Fig. 3 is B part enlarged drawing among Fig. 1.
Fig. 4 is C part enlarged drawing among Fig. 1.
Wherein, 1, central tube, 2, last lead ring, 3, first dig-ins pin, 4, upper slips, 5, upper cone, 6, first shear pin, 7, go up outer back band, 8, back band in going up, 9, last rubber sleeve back-up ring, 10, packing element holds and stays ring, 11, first " O " type circle, 12, packing element, 13, following rubber sleeve back-up ring, 14, back band down, 15, following outer back band, 16, lower cone, 17, lower slips, 18, lock ring, 19, second dig-ins pin, 20, the lock ring cover, 21, second shear pin, 22, upper piston, 23, second " O " type circle, 24, the 3rd " O " type circle, 25, " O " type circle back band, 26, split ring set, 27, split ring, 28, lower piston, 29, last setting sleeve, 30, the 3rd dig-ins pin, and 31, following setting sleeve, 32, following lead ring, 33, lower contact, 34, first pressure transmission hole, 35, second pressure transmission hole.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Present embodiment provides a kind of barefoot completion tubing string hanging packer, comprises central tube 1 and the packing element 12 that is arranged on the central tube 1, and as shown in Figure 1, the lower end of described central tube 1 is threaded with lower contact 33, and fixing locking with dig-inning pin; The integral body that central tube 1 and lower contact 33 are linked to be is equipped with lead ring 2, upper slips 4, upper cone 5 from top to bottom successively, go up outer back band 7, go up in back band 8, down in back band 14, down outer back band 15, lower cone 16, lower slips 17, lock ring cover 20, upper piston 22, split ring set 26, split ring 27, lower piston 28, upward setting sleeve 29, following setting sleeve 31 and following lead ring 32; Described upward lead ring 2 is threaded with central tube 1 and dig-ins pin 3 with first and fix locking; Described upper slips 4 and upper cone 5 axially are enclosed within on the central tube 1, lead ring 2 and central tube step on upper slips 4 one end in contact, and the other end contacts with upper cone 5, and upper cone 5 is fixed on the central tube 1 by first shear pin 6; Be provided with between described central tube 1 and the packing element 12 to hold and stay ring 10, this holds and stays ring 10 to seal at packing element 12 middle parts and with central tube 1 usefulness first " O " type circle 11, packing element 12 two ends are inserted in interior back band 8, down interior back band 14 respectively, upward outer back band 7, down outer back band 15 constitute the packing element assemblies, this packing element assembly is placed on the central tube 1, going up outer back band 7 contacts with upper cone 5, lower cone 16 and lower slips 17 axially are enclosed within on the central tube 1, and lower cone 16 1 ends contact and are fixed on the central tube 1 by first shear pin 6 with following outer back band 15; Described lock ring cover 20 is connected with central tube 1 by lock ring 18, and by the fixing anti-rotation of second shear pin 21 and central tube 1, lock ring overlaps 20 upper surfaces and contacts with lower slips 17 end faces; Be connected by 23 slipper seals of second " O " type circle between described upper piston 22 and the central tube 1; The described ring set 26 of splitting is fixed on the central tube 1 by splitting ring 27 with lower piston 28, and lower piston 28 is by second " O " type circle, 23 center seal pipes 1; The described setting sleeve 29 of going up is threaded with upper piston 22, and last setting sleeve 29, upper piston 22 and lower piston 28 all are connected by 23 slipper seals of second " O " type circle with central tube 1; Described down setting sleeve 31 is threaded with last setting sleeve 29, all is connected with slipper seal by the 3rd " O " type circle 24 between following setting sleeve 31 and last setting sleeve 29, the lower contact 33; Described lead ring 32 down is threaded with central tube 1 and dig-ins pin 30 with the 3rd and fix locking.
Further, have on the above-mentioned central tube 1 radially first pressure transmission hole 34 and second pressure transmission hole, 35, the first pressure transmission holes 34 at upper piston 22 with split between the ring set 26, second pressure transmission hole 35 is between last setting sleeve 29 and lower contact 33.
Further, above-mentioned central tube 1 upper end is gingival cyst of mucous gland in the newborn button female thread structure, is convenient to the tieback of sending into and transfer to flow string of hanging packer.
Further, above-mentioned upper cone 5 and upper slips 4 cone match, lower cone 16 and lower slips 17 cone match.
Further, going up between interior back band 8 and the down interior back band 14 of above-mentioned packing element assembly is provided with rubber sleeve back-up ring 9 and following rubber sleeve back-up ring 13.
Further, the upward outer back band 7 of above-mentioned packing element assembly and last interior back band 8 constitute soft metals ring back bands; The following outer back band 15 of described packing element assembly and down interior back band 14 constitute soft metals ring back bands.
Further, the packing element that the setting of above-mentioned packing element 12 middle parts is made by cast iron quality holds to stay and encircles 10, and packing element is provided with first " O " type circle 11 in the middle of holding and staying ring 10 endoporus, and its support packing element heart portion is beneficial to packing element and expands.
Further, be provided with lock ring cover 20 parts that contacts on the above-mentioned central tube 1 and guide lock ring to overlap 20 up zigzag screw threads, and it is 20 up only to allow lock ring to overlap.
Further, above-mentioned lock ring 18 adopts the inside and outside toothing of single otch, and lock ring cover 20 is dig-inned in the groove of the notch that pin 19 is fixed on lock ring 18 by second, prevents that lock ring from overlapping in the 20 up processes, lock ring 18 rotation in lock ring cover 20.Lock ring 18 follows lock ring cover 20 to transmit pressure, and is up and Prssure lock fixed on the central tube 1.
Further, the above-mentioned ring 27 of splitting is used for fixedly lower piston 28 for open C ring or 2 C ring compositions.
Further, above-mentioned the 3rd " O " type circle 24 two ends have " O " type circle back band 25 of being made by polytetrafluoroethylene (PTFE).The 3rd " O " type circle 24 two ends are furnished with the performance that " O " type circle back band 25 can reach good slipper seal.
Operating principle of the present utility model is: utilize supporting intubate or ball seat to form sealing at packer endoporus place, in oil pipe, suppress, liquid produces the thrust that axially makes progress by the first pressure transmission mouth and the second pressure transmission mouth of hanging packer at upper piston 22 and last setting sleeve 29, act on lock ring cover 20, reaching starting pressure cuts off on the lock ring cover 20 second shear pin 21 to drive lock rings 18 up together, up extruding lower slips 17, lower slips 17 passes to lower cone 16 with power, arrive the certain force value and cut off first shear pin 6 on the lower cone 16, lower cone 16 up extruding packing element 12 and upper cones 5, arrival certain force value is cut off first shear pin 6 on the upper cone 5, lower cone 16 up extruding upper slipses 4, the upper slips 4 interlock sleeve pipe that breaks, packing element 12 continues to expand, and lower slips 17 continues up, up to a certain degree after, packing element 12 Expansion sealing sleeve pipes, lower slips 17 interlock sleeve pipes finish setting; The lock ring 18 of packer inside pins setting force simultaneously, keeps the seat envelope of slips and gum cover.
The above only is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvement or distortion, these improvement or distortion also should be considered as protection domain of the present utility model.
Claims (10)
1. a barefoot completion tubing string hanging packer comprises central tube and the packing element that is arranged on the central tube, and it is characterized in that: the lower end of described central tube is threaded with lower contact, and fixes with dig-inning pin; The integral body that central tube and lower contact are linked to be is equipped with lead ring, upper slips, upper cone from top to bottom successively, go up outer back band, go up in back band, down in back band, down outer back band, lower cone, lower slips, lock ring cover, upper piston, split ring set, split ring, lower piston, upward setting sleeve, following setting sleeve and following lead ring; Described upward lead ring is threaded with central tube and fixes with dig-inning pin; Described upper slips and upper cone axially are enclosed within on the central tube, lead ring and central tube step on upper slips one end in contact, and the other end contacts with upper cone, and upper cone is fixed on the central tube by shear pin; Be provided with between described central tube and the packing element to hold and stay ring, this holds and stays ring to seal with " O " type circle at the packing element middle part and with central tube, the packing element two ends are inserted in interior back band, down interior back band respectively, upward outer back band, down outer back band constitute the packing element assembly, this packing element assembly is placed on the central tube, going up outer back band contacts with upper cone, lower cone and lower slips axially are enclosed within on the central tube, and lower cone one end contacts and is fixed on the central tube by shear pin with following outer back band; Described lock ring cover is connected with central tube by lock ring, and is fixed by shear pin and central tube, and lock ring puts end face and contacts with the lower slips end face; Be connected by the slipper seal of " O " type circle between described upper piston and the central tube; Described ring set and the lower piston split is fixed on the central tube by splitting ring, and lower piston is by " O " type circle center seal pipe; The described setting sleeve of going up is threaded with upper piston, and last setting sleeve, upper piston and lower piston all are connected with the central tube slipper seal by " O " type circle; Described down setting sleeve is threaded with last setting sleeve, is slipper seal between following setting sleeve and last setting sleeve, the lower contact and is connected; Described lead ring down is threaded with central tube and fixes with dig-inning pin.
2. a kind of barefoot completion tubing string hanging packer according to claim 1, it is characterized in that: have radially first pressure transmission hole and second pressure transmission hole on the described central tube, first pressure transmission hole is at upper piston and split between the ring set, and second pressure transmission hole is between last setting sleeve and lower contact.
3. a kind of barefoot completion tubing string hanging packer according to claim 1 is characterized in that: be gingival cyst of mucous gland in the newborn button female thread structure on the described central tube.
4. a kind of barefoot completion tubing string hanging packer according to claim 1 is characterized in that: described upper cone and upper slips cone match, lower cone and lower slips cone match.
5. a kind of barefoot completion tubing string hanging packer according to claim 1 is characterized in that: be provided with rubber sleeve back-up ring and following rubber sleeve back-up ring between the upward interior back band of described packing element assembly and the down interior back band; The upward outer back band of described packing element assembly and last interior back band constitute soft metal ring back band, and the following outer back band of described packing element assembly and following interior back band constitute soft metal ring back band.
6. a kind of barefoot completion tubing string hanging packer according to claim 1 or 5 is characterized in that: the middle part of described packing element arranges packing element and holds and stay ring, and this packing element is provided with " O " type circle in the middle of holding the endoporus that stays ring, and packing element holds and stays ring is cast iron quality.
7. a kind of barefoot completion tubing string hanging packer according to claim 1 is characterized in that: overlap the part that contacts with lock ring on the described central tube and be provided with the up zigzag screw thread of guiding lock ring cover.
8. a kind of barefoot completion tubing string hanging packer according to claim 7, it is characterized in that: described lock ring adopts the inside and outside toothing of single otch, and the lock ring cover is fixed in the groove of the notch of lock ring by shear pin.
9. a kind of barefoot completion tubing string hanging packer according to claim 1 is characterized in that: the described ring of splitting is formed for open C ring or 2 C rings.
10. a kind of barefoot completion tubing string hanging packer according to claim 1, it is characterized in that: described upward setting sleeve, upper piston have " O " type circle back band with " O " type circle two ends that lower piston is connected with the central tube slipper seal, should " O " type circle back band be the polytetrafluoroethylene (PTFE) materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199426 CN203223203U (en) | 2013-04-19 | 2013-04-19 | Hanging packer for open hole completion pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199426 CN203223203U (en) | 2013-04-19 | 2013-04-19 | Hanging packer for open hole completion pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223203U true CN203223203U (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320199426 Withdrawn - After Issue CN203223203U (en) | 2013-04-19 | 2013-04-19 | Hanging packer for open hole completion pipe string |
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| CN (1) | CN203223203U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195389A (en) * | 2013-04-19 | 2013-07-10 | 四机赛瓦石油钻采设备有限公司 | Suspension packer for open hole well completion |
| CN103835675A (en) * | 2014-03-18 | 2014-06-04 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN104727776A (en) * | 2015-02-12 | 2015-06-24 | 中国海洋石油总公司 | Hanging packer for horizontal well multistage fracturing |
| CN111749639A (en) * | 2019-03-28 | 2020-10-09 | 东营市汇诚石油工程技术有限责任公司 | Naked eye plugging device |
| CN114809976A (en) * | 2021-01-21 | 2022-07-29 | 中国石油天然气股份有限公司 | Soluble packer and multistage sliding sleeve fracturing string |
-
2013
- 2013-04-19 CN CN 201320199426 patent/CN203223203U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195389A (en) * | 2013-04-19 | 2013-07-10 | 四机赛瓦石油钻采设备有限公司 | Suspension packer for open hole well completion |
| CN103195389B (en) * | 2013-04-19 | 2015-09-16 | 四机赛瓦石油钻采设备有限公司 | A kind of suspension packer for open hole well completion |
| CN103835675A (en) * | 2014-03-18 | 2014-06-04 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN103835675B (en) * | 2014-03-18 | 2017-01-25 | 四机赛瓦石油钻采设备有限公司 | Long-rubber-sleeve compression type open hole packer |
| CN104727776A (en) * | 2015-02-12 | 2015-06-24 | 中国海洋石油总公司 | Hanging packer for horizontal well multistage fracturing |
| CN111749639A (en) * | 2019-03-28 | 2020-10-09 | 东营市汇诚石油工程技术有限责任公司 | Naked eye plugging device |
| CN114809976A (en) * | 2021-01-21 | 2022-07-29 | 中国石油天然气股份有限公司 | Soluble packer and multistage sliding sleeve fracturing string |
| CN114809976B (en) * | 2021-01-21 | 2023-12-22 | 中国石油天然气股份有限公司 | Soluble packer and multistage sliding sleeve fracturing string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131002 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |