CN109577907B - Hydraulic packer capable of setting for many times - Google Patents

Hydraulic packer capable of setting for many times Download PDF

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Publication number
CN109577907B
CN109577907B CN201811497245.4A CN201811497245A CN109577907B CN 109577907 B CN109577907 B CN 109577907B CN 201811497245 A CN201811497245 A CN 201811497245A CN 109577907 B CN109577907 B CN 109577907B
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China
Prior art keywords
sleeve
rubber
rubber cylinder
central tube
sealing
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CN201811497245.4A
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Chinese (zh)
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CN109577907A (en
Inventor
田家林
葛桐旭
胡志超
宋俊阳
李成林
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Southwest Petroleum University
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Southwest Petroleum University
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/128Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/1208Packers; Plugs characterised by the construction of the sealing or packing means

Abstract

The invention relates to a hydraulic packer capable of being set for multiple times in the field of oil and natural gas exploitation, and mainly solves the problems that the existing packer is poor in sealing timeliness and cannot realize continuous multiple setting. The rubber tube sealing device mainly comprises an upper joint, a central tube a, a rubber tube spacer ring, a rubber tube b, a rubber tube retaining ring, a rubber tube limiting sleeve, a central tube b, a sleeve a, a sealing ring a, a sleeve b, a sealing ring b and a lower joint. The rubber cylinders are arranged into a rubber cylinder a, a rubber cylinder b and a rubber cylinder a from top to bottom, the rubber cylinder b is shorter than the rubber cylinder a, a rubber cylinder spacer ring is arranged between every two rubber cylinders, and the sealing effect is improved by the four-rubber-cylinder structure; four lugs designed on the central tube b interact with the channels designed on the sleeve b to realize multiple times of seating and unsealing. The packer setting device is simple in structure, can realize multiple setting, and cannot cause packer failure or potential safety hazard due to multiple setting.

Description

Hydraulic packer capable of setting for many times
Technical Field
The invention relates to a hydraulic packer capable of being set for multiple times in the field of oil and gas exploitation.
Background
At present, most of oil fields in China enter the middle and later stages of production and development, the development period is gradually prolonged, developed oil wells are gradually deepened, the underground temperature is higher and higher, the pressure difference between oil layers is gradually increased, the underground environment is also more and more complex, and the packer material and the sealing performance bear great tests. The existing packer has poor sealing aging and insufficient pressure resistance and temperature resistance, needs to be fixed by a pin for preventing midway setting before setting, and utilizes the self gravity of a pipe column and the pressure of high-pressure liquid to shear a setting pin during setting, but the design operation is irreversible. Some packers can be set for multiple times, but the potential operation hazard can also occur.
Disclosure of Invention
The invention aims to: the hydraulic packer capable of being set for multiple times is designed, the sealing reliability and the pressure resistance of the packer are improved, continuous multiple setting can be carried out, and the hydraulic packer capable of being set for multiple times is particularly provided.
The technical scheme of the invention is as follows: but packer that hydraulic pressure type multi-time setting comprises top connection, center tube a, packing element spacer ring, packing element b, packing element retaining ring, packing element stop collar, center tube b, sleeve a, sealing washer a, sleeve b, sealing washer b, lower clutch, characterized by: the upper joint is in threaded connection with the central pipe a, the lower portion of the upper joint abuts against the rubber sleeve a, the rubber sleeves are arranged into the rubber sleeves a from top to bottom, the rubber sleeves b are shorter than the rubber sleeves a, a rubber sleeve spacer ring is arranged between every two rubber sleeves, the sealing effect is improved due to the four-rubber-sleeve structure, the lower end of the rubber sleeve a at the lowest end is connected with the rubber sleeve retaining ring, the rubber sleeve retaining sleeve abuts against the rubber sleeve retaining ring, the rubber sleeve retaining sleeve is sleeved on the central pipe a, the lower end of the rubber sleeve retaining sleeve is in threaded connection with the sleeve a, the central pipe a is in threaded connection with the central pipe b, the sleeve a is in threaded connection with the sleeve b, the sealing ring b is placed between the sleeve a and the sleeve b, the sealing ring a is placed between the sleeve a and the central pipe b, the sealing ring b is placed between the sleeve b and the central pipe b, and the lower end of.
The hydraulic packer capable of being set for multiple times in the scheme is characterized in that: the center tube b8 is designed with four small holes for driving high-pressure fluid to push the sleeve a9, and finally, the rubber tube a3 and the rubber tube b5 are pushed and compressed, and the sleeve b11 is pulled, so that setting is realized. Meanwhile, four convex blocks are designed on the central tube b8 and used for clamping the sleeve b11 when the hydraulic packer capable of being set for multiple times is set, so that the hydraulic packer capable of being set for multiple times is kept in a set state.
The hydraulic packer capable of being set for multiple times in the scheme is characterized in that: the sleeve b is provided with four concave channels parallel to the axis and used for the movement of four convex blocks on the central tube b, and the tail ends of the four concave channels are also provided with wave-shaped concave channels used for clamping the four convex blocks on the central tube b in the wave-shaped concave grooves of the sleeve b finally, so that the hydraulic packer capable of being set for multiple times is guaranteed to finish the setting process, and the setting state can be maintained during pressure relief.
The sealing structure in the scheme is a four-rubber-cylinder anti-protruding structure, the rubber cylinders at two ends are slightly longer than the middle rubber cylinder, a rubber cylinder spacer ring is arranged between every two rubber cylinders, and a rubber cylinder retaining ring and a rubber cylinder limiting sleeve are further arranged at the bottom.
The hydraulic packer capable of being set for multiple times in the scheme has the advantages that the sealing ring a is placed between the sleeve a and the central tube b, the sealing rings b are placed between the sleeve a and the sleeve b and between the central tube b and the sleeve b, and a better sealing effect is achieved.
The invention has the beneficial effects that: (1) the hydraulic packer capable of being set for multiple times is simple in structure and excellent in performance, and can be set and unset at any required position; (2) can realize continuous multiple setting, and can not produce packer inefficacy or potential safety hazard because of carrying out multiple setting, deblocking.
Drawings
FIG. 1 is a schematic structural view of a hydraulic multi-setting packer according to the present invention.
Fig. 2 is a detail view of the sleeve a of fig. 1 according to the invention.
Fig. 3 is a detail view of the center tube b of fig. 1 according to the present invention.
Fig. 4 is a partial schematic view illustrating the sealing and unsealing principle of fig. 1 according to the present invention.
In the figure: 1. the rubber tube sealing device comprises an upper connector, 2 central tubes a, 3 rubber tubes a, 4 rubber tube spacer rings, 5 rubber tubes b, 6 rubber tube retaining rings, 7 rubber tube limiting sleeves, 8 central tubes b, 9 sleeves a, 10 sealing rings a, 11 sleeves b, 12 sealing rings b, 13 lower connectors.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
according to the attached drawings, the hydraulic packer capable of being set for multiple times comprises an upper joint 1, a central tube a2, a rubber sleeve a3, a rubber sleeve spacer ring 4, a rubber sleeve b5, a rubber sleeve retaining ring 6, a rubber sleeve stop collar 7, a central tube b8, a sleeve a9, a sealing ring a10, a sleeve b11, a sealing ring b12 and a lower joint 13, and is characterized in that the upper joint 1 is in threaded connection with the central tube a2, the lower end of the upper joint 1 abuts against the rubber sleeve a3, rubber sleeves are arranged into the rubber sleeve a3, the rubber sleeve b5, the rubber sleeve b5, the rubber sleeve a3 and the rubber sleeve b5 are shorter than the rubber sleeve a3, one rubber sleeve spacer ring 4 is arranged between every two rubber sleeves, the four-rubber sleeve structure enables the sealing effect to be improved, the lower end of the rubber sleeve a3 is connected with the rubber sleeve retaining ring 6, the rubber sleeve stop collar 7 abuts against the rubber sleeve ring 6, the rubber sleeve a2 is sleeved on the central tube a, the central tube 8 is connected with the central tube 8 through threads, sleeve a9 and sleeve b11 are connected through threads, a sealing ring b12 is placed between sleeve a9 and sleeve b11, a sealing ring a10 is placed between sleeve a9 and central tube b8, a sealing ring b12 is placed between sleeve b11 and central tube b8, and the lower end of central tube b8 is connected with lower joint 13 through threads.
The setting process of the hydraulic packer capable of setting for multiple times comprises the following steps: the upper end of the upper joint 1 is connected with a high-pressure oil pipe, high-pressure fluid is pumped from the high-pressure oil pipe, the high-pressure fluid passes through the upper joint 1 of the hydraulic packer capable of being set for multiple times, the central pipe a2 reaches the central pipe b8, an annular space at the lower ends of the central pipe b8 and the sleeve a9 is pressed through 4 small holes designed in the central pipe b8, the sleeve a9 is pushed to move upwards, the rubber sleeve limiting sleeve 7 and the rubber sleeve retaining ring 6 are pushed to move upwards, the rubber sleeve a3 and the rubber sleeve b5 are squeezed, the rubber sleeve spacer ring 4 moves upwards, the sleeve a9 pulls the sleeve b11 to move upwards, the relative position of a lug on the central pipe b8 and the sleeve b11 reaches the position 2 from the position, the pressing is continued, the sleeve b11 rotates to move upwards, the relative position of the lug on the central pipe b8 and the sleeve b11 reaches the position. Pressure can be relieved at this time, if not relieved, the sleeve b11 is kept at the position, if relieved, the sleeve b11 descends, and the relative position of the lug on the central tube b8 and the sleeve b11 is changed from the 3 position to the 4 position. The sleeve b11 continues to rotate downward and the relative position of the lugs on the center tube b8 to the sleeve b11 goes from the 4 position to the 5 position. The sleeve b11 is now locked in this position. And the rubber sleeve a3 and the rubber sleeve b5 are in a compressed state, can play a role in sealing, and complete the setting process of the hydraulic packer capable of being set for multiple times.
The hydraulic packer unsetting process capable of setting for multiple times is as follows: the upper end of an upper joint 1 is connected with a high-pressure oil pipe, high-pressure fluid is pumped from the high-pressure oil pipe, the high-pressure fluid passes through the upper joint 1 of a hydraulic packer capable of setting for multiple times, a central pipe a2 reaches a central pipe b8, an annular space at the lower ends of the central pipe 28 and a sleeve a9 is pressed through 4 small holes in the central pipe b8, a sleeve a9 is pushed to move upwards, a rubber sleeve limiting sleeve 7 is pushed, a rubber sleeve retaining ring 6 moves upwards, a rubber sleeve a3 and a rubber sleeve b5 are squeezed again, a rubber sleeve spacer ring 4 moves upwards, the sleeve a9 pulls a sleeve b11 to move upwards, the relative position between a lug on the central pipe b8 and a sleeve b11 reaches a 5 ' position from a 5 position, the sleeve b11 rotates upwards, the relative position between a lug on the central pipe b8 and a sleeve b11 reaches a3 ' position from a 5 ' position, at the moment, the relative position between the lug on the central pipe b8 and a sleeve b11 reaches a3 ' position from a 4 ' position, the sleeve b11 rotates downwards, and a pressure relief position on, then, the substrate moves downwards to the 1' position to complete the deblocking.
The hydraulic packer capable of being set for multiple times in the scheme is characterized in that: the center tube b8 is designed with four small holes for driving high-pressure fluid to push the sleeve a9, and finally, the rubber tube a3 and the rubber tube b5 are pushed and compressed, and the sleeve b11 is pulled, so that setting is realized. Meanwhile, four convex blocks are designed on the central tube b8 and used for clamping the sleeve b11 when the hydraulic packer capable of being set for multiple times is set, so that the hydraulic packer capable of being set for multiple times is kept in a set state.
The hydraulic packer capable of being set for multiple times in the scheme is characterized in that: the sleeve b11 is designed with four concave channels parallel to the axis for the movement of four lugs on the central tube b8, and the wave-shaped concave channels are designed at the ends of the four concave channels for finally clamping the four lugs on the central tube b8 in the wave-shaped concave channels of the sleeve b11, so that the hydraulic multi-setting packer can complete the setting process, and the setting state can be maintained when pressure is relieved.
In the hydraulic packer capable of being set for multiple times in the scheme, the sealing structure of the rubber cylinder is a four-rubber-cylinder anti-protruding structure, the rubber cylinders a3 at two ends are slightly longer than the middle rubber cylinder b5, a rubber cylinder spacer ring 4 is designed between every two rubber cylinders, and a rubber cylinder retaining ring 6 and a rubber cylinder limiting sleeve 7 are further designed at the lowest part.
In the hydraulic packer capable of being set for multiple times in the scheme, the sealing ring a10 is arranged between the sleeve a9 and the central tube b8, and the sealing rings b12 are arranged between the sleeve a9 and the sleeve b11 and between the central tube b8 and the sleeve b11, so that a better sealing effect is achieved.
The hydraulic packer capable of being set for multiple times in the scheme has the following assembly sequence: sequentially installing a rubber cylinder limiting sleeve 7, a rubber cylinder retaining ring 6, a rubber cylinder a3, a rubber cylinder spacer ring 4 and a rubber cylinder b5 into a central tube a2, connecting an upper joint 1 with the central tube a2 by using threads, connecting a sleeve a9 with the rubber cylinder limiting sleeve 7 by using threads, installing a sealing ring a10 on a sleeve a9, connecting a central tube b8 penetrating through the sleeve a9 and the central tube a2 by using threads, installing a sealing ring b12 on the sleeve a9 and the central tube b8, sleeving a sleeve b11, connecting the sleeve a9 by using threads, and connecting a lower joint 13 with the central tube b8 by using threads to complete assembly.

Claims (2)

1. But packer that hydraulic pressure type multi-time setting comprises top connection (1), center tube a (2), packing element a (3), packing element spacer ring (4), packing element b (5), packing element retaining ring (6), packing element stop collar (7), center tube b (8), sleeve a (9), sealing washer a (10), sleeve b (11), sealing washer b (12), lower clutch (13), characterized by: the upper joint (1) is connected with the central tube a (2) through threads, the lower part of the upper joint (1) props against the rubber cylinder a (3), the rubber cylinders are arranged into the rubber cylinder a (3), the rubber cylinder b (5), the rubber cylinder a (3), the rubber cylinder b (5) is shorter than the rubber cylinder a (3), a rubber cylinder spacer ring (4) is arranged between every two rubber cylinders, the sealing effect is improved due to the four-rubber-cylinder structure, the lower end of the rubber cylinder a (3) at the lowest end is connected with the rubber cylinder retaining ring (6), the rubber cylinder retaining sleeve (7) props against the rubber cylinder retaining ring (6), the rubber cylinder retaining sleeve (7) is sleeved on the central tube a (2), the lower end of the rubber cylinder retaining sleeve (7) is connected with the sleeve a (9) through threads, the central tube a (2) is connected with the central tube b (8) through threads, the sleeve a (9) is connected with the sleeve b (11) through threads, and a sealing ring b (12) is arranged between the sleeve a (9) and the sleeve, a sealing ring a (10) is arranged between the sleeve a (9) and the central pipe b (8), a sealing ring b (12) is arranged between the sleeve b (11) and the central pipe b (8), a better sealing effect is achieved, and the lower end of the central pipe b (8) is connected with the lower joint (13) through threads; the central tube b (8) is provided with four small holes for introducing high-pressure fluid to push the sleeve a (9), and finally, the rubber cylinder a (3) and the rubber cylinder b (5) are pushed and compressed to realize setting; meanwhile, four convex blocks are designed on the central tube b (8) and used for clamping the sleeve b (11) when the hydraulic packer capable of being set for multiple times is set, so that the hydraulic packer capable of being set for multiple times is kept in a set state; the sleeve b (11) is provided with four concave channels parallel to the axis and used for the movement of four convex blocks on the central tube b (8), and the lower ends of the four concave channels are also provided with wave-shaped concave channels which are used for finally clamping the four convex blocks on the central tube b (8) in the wave-shaped concave channels of the sleeve b (11), so that the hydraulic packer capable of being set for multiple times is ensured to complete the setting process, and the setting state can be kept during pressure relief.
2. The hydraulic packer capable of setting repeatedly according to claim 1, wherein the packing element sealing structure is a four-packing-element protruding-proof structure, the packing elements a (3) at two ends are slightly longer than the middle packing element b (5), a packing element spacer ring (4) is designed between every two packing elements, and a packing element retaining ring (6) and a packing element limiting sleeve (7) are further designed at the lowest part.
CN201811497245.4A 2018-12-07 2018-12-07 Hydraulic packer capable of setting for many times Active CN109577907B (en)

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Application Number Priority Date Filing Date Title
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CN109577907B true CN109577907B (en) 2020-12-25

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Publication number Priority date Publication date Assignee Title
CN111472712A (en) * 2020-04-13 2020-07-31 邵玉强 Packer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2490312Y (en) * 2001-04-17 2002-05-08 张子臣 Hydraulic compression underground repeated setting packer for washability well
CN201714338U (en) * 2010-07-12 2011-01-19 杜开全 Multifunctional double-slip packer
RU2443850C1 (en) * 2010-06-10 2012-02-27 Открытое Акционерное Общество "Тяжпрессмаш" Hydraulic packer
CN104120996A (en) * 2013-04-25 2014-10-29 中国石油化工股份有限公司 Packer
CN104863540A (en) * 2015-05-28 2015-08-26 荆州市赛瑞能源技术有限公司 Anchor packer with hydraulic setting function and rotation unsetting function
CN104895522A (en) * 2015-05-27 2015-09-09 荆州市赛瑞能源技术有限公司 Hydraulic setting and rotating unlocking packer
US20150376968A1 (en) * 2014-06-30 2015-12-31 Baker Hughes Incorporated Synchronic Dual Packer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2490312Y (en) * 2001-04-17 2002-05-08 张子臣 Hydraulic compression underground repeated setting packer for washability well
RU2443850C1 (en) * 2010-06-10 2012-02-27 Открытое Акционерное Общество "Тяжпрессмаш" Hydraulic packer
CN201714338U (en) * 2010-07-12 2011-01-19 杜开全 Multifunctional double-slip packer
CN104120996A (en) * 2013-04-25 2014-10-29 中国石油化工股份有限公司 Packer
US20150376968A1 (en) * 2014-06-30 2015-12-31 Baker Hughes Incorporated Synchronic Dual Packer
CN104895522A (en) * 2015-05-27 2015-09-09 荆州市赛瑞能源技术有限公司 Hydraulic setting and rotating unlocking packer
CN104863540A (en) * 2015-05-28 2015-08-26 荆州市赛瑞能源技术有限公司 Anchor packer with hydraulic setting function and rotation unsetting function

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
液控找堵水开关器的研制与应用;杨康敏等;《石油机械》;20020125;第30卷(第01期);全文 *

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