CN204060611U - A kind of open hole well squeezes stifled compression long packing element type hydraulic packer - Google Patents

A kind of open hole well squeezes stifled compression long packing element type hydraulic packer Download PDF

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Publication number
CN204060611U
CN204060611U CN201420455982.9U CN201420455982U CN204060611U CN 204060611 U CN204060611 U CN 204060611U CN 201420455982 U CN201420455982 U CN 201420455982U CN 204060611 U CN204060611 U CN 204060611U
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CN
China
Prior art keywords
packing element
tube
element type
lock
center tube
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420455982.9U
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Chinese (zh)
Inventor
宋顺平
薛让平
李录科
李培梅
杨森
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.)
Changqing Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd
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Publication date
Application filed by Changqing Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical Changqing Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN201420455982.9U priority Critical patent/CN204060611U/en
Application granted granted Critical
Publication of CN204060611U publication Critical patent/CN204060611U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of open hole well and squeezes stifled compression long packing element type hydraulic packer, comprises bindiny mechanism, sealing mechanism, setting mechanism, retaining mechanism reconciliation sealing mechanism.Bindiny mechanism is made up of top connection, upper center tube, connector, lower center tube, by syndeton, all parts connections is made into an entirety; Sealing mechanism is made up of exterior central tube, upper press ring, lower pressure ring and compression long packing element type, carries out packing to annular space; Setting mechanism is made up of lower pressure ring, upper piston cover, connector, lower piston, lower piston cover, lower pressure-bearing body, exterior central tube and lower center tube, plays the up compression packing element of pressurized; Retaining mechanism is made up of top overcoat, lock claw and lock tube, realizes the tight lock after packing element compression; Separate sealing mechanism to be made up of upper center tube reconciliation seal ring, lock tube can be separated with lock claw, realize the effect that packing element reclaims.The utility model is applicable to open hole well, realizes sealing to irregular borehole by compression long packing element type, can restting, simple to operate.

Description

A kind of open hole well squeezes stifled compression long packing element type hydraulic packer
Technical field
The utility model relates to the downhole tool that a kind of Oil/gas Well implements underground work, is specifically related to a kind of open hole well and squeezes stifled compression long packing element type hydraulic packer.
Background technology
Because downhole conditions is complicated, geological knowledge often there will be partial deviations, causes often running into drop ply in drilling process, for ensureing quality and the safety of drilling well, needs to carry out shutoff to this kind of drop ply.But such drop ply of shutoff does not still have pointed ground special tool at present, have developed open hole well for this reason and squeeze stifled compression long packing element type hydraulic packer, to meet the needs of such measure.
Utility model content
The purpose of this utility model is as in drilling process, shutoff drop ply provides a kind of special tool, namely provide one can bear high temperature, high pressure, can restting, open hole well simple to operate squeezes stifled compression long packing element type hydraulic packer.
The utility model is made up of top connection, lock claw, top overcoat, solution seal ring, lock tube, upper center tube, upper press ring, exterior central tube, compression long packing element type, lower pressure ring, connector, upper piston cover, lower piston, lower pressure-bearing body, lower piston cover, filler ring and lower center tube; Form an entirety with screwed connection successively by top connection, upper center tube, connector, lower center tube, form the bindiny mechanism of described packer; Be made up of the sealing mechanism of described packer exterior central tube, upper press ring, lower pressure ring, compression long packing element type, wherein exterior central tube and lower pressure ring adopt screwed connection; The setting mechanism of described packer is made up of lower pressure ring, upper piston cover, connector, lower piston, lower piston cover, lower pressure-bearing body, exterior central tube and lower center tube; Wherein exterior central tube with press down ring screwed connection, lower pressure ring is connected with upper piston threading, and lower piston is connected with lower piston threading, is fixedly connected with as a whole between upper and lower piston bush; Lower pressure-bearing body and lower center tube screwed connection; Between upper press ring and upper center tube, connector and upper piston overlap between, lower pressure-bearing body and lower piston overlap between, all adopt slipper seal between lower piston and lower center tube; Form first order plunger shaft between lower pressure ring, connector and upper piston cover, between lower piston, lower pressure-bearing body and lower piston cover, form second level plunger shaft; Upper center tube is provided with row's inlet opening pressing down the position between ring and connector; Position simultaneously on lower center tube between lower piston and lower pressure-bearing body is also provided with row's inlet opening; The retaining mechanism of described packer is made up of top overcoat, lock claw and lock tube, the upper end medial surface of its middle and upper part overcoat is provided with a positioning step, the upper end of lock claw is connected between top connection and top overcoat by this positioning step, and the exterior central tube of lock tube bottom and setting mechanism passes through screwed connection; Be made up of the solution sealing mechanism of described packer upper center tube reconciliation seal ring, solution seal ring and upper center tube form an entirety by screwed connection.
Above-mentioned lower center tube adopts integral central tubular structure, to improve bonding strength.
The length range of above-mentioned compression long packing element type is 400-600mm, in order to improve the sealing of irregular borehole.
The length value of above-mentioned compression long packing element type is 500mm.
The diameter of above-mentioned inlet opening is 5mm.
The upper and lower end portion of above-mentioned compression long packing element type protects a bowl sulfuration respectively and is integrated, to improve packing element intensity with plurality of copper.
The lower end of above-mentioned lock claw and the middle part of described lock tube are respectively equipped with lock claw button and the lock tube button of the tooth form of falling sawtooth; When packer be in set with locking state time, lock claw button and the mutual fastener of lock tube button, and the contact surface of lock claw button and the mutual fastener of lock tube button is all horizontal by a minute angle, is beneficial to lock between lock claw and lock tube.
The value of above-mentioned minute angle is 5 °.
It is the inclined-plane at 30o angle that the medial surface of above-mentioned solution seal ring upper end is set to vertical direction, to realize reclaiming the pressure of lock claw.
The beneficial effects of the utility model: employing compression long packing element type can realize the positiver sealing to this kind of irregular borehole of open hole well, the retaining mechanism simultaneously adopted can realize self-locking, ensure the continuous and effective of packer, separate sealing mechanism and can realize powerful separation lock ring and lock tube, be returned to initial confined state after making it depart from, reach the function that packer realizes restting.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of the utility model lock claw and sleeve portion.
1, top connection; 2, lock claw; 3, top overcoat; 4, seal ring is separated; 5, lock tube; 6, upper center tube; 7, upper press ring; 8, exterior central tube; 9, compression long packing element type; 10, lower pressure ring; 11, connector; 12, upper piston cover; 13, lower piston; 14, lower pressure-bearing body; 15, lower piston cover; 16, filler ring; 17, lower center tube; 301, positioning step; 201, lock claw button; 501, lock tube button.
Detailed description of the invention
Open hole well as shown in Figure 1 squeezes stifled compression long packing element type hydraulic packer, and it is conciliate the parts such as sealing mechanism formed by bindiny mechanism, sealing mechanism, setting mechanism, retaining mechanism; Its concrete parts are top connection 1, lock claw 2, top overcoat 3, solution seal ring 4, lock tube 5, upper center tube 6, upper press ring 7, exterior central tube 8, compression long packing element type 9, lower pressure ring 10, connector 11, upper piston cover 12, lower piston 13, lower pressure-bearing body 14, lower piston cover 15, filler ring 16 and lower center tube 17 respectively; Form an entirety with screwed connection successively by top connection 1, upper center tube 6, connector 11, lower center tube 17, form the bindiny mechanism of described packer, by bindiny mechanism, all parts connections are made into an entirety; Be made up of the sealing mechanism of described packer exterior central tube 8, upper press ring 7, lower pressure ring 10, compression long packing element type 9, wherein exterior central tube 8 and lower pressure ring 10 adopt screwed connection; The setting mechanism of described packer is made up of lower pressure ring 10, upper piston cover 12, connector 11, lower piston 13, lower piston cover 15, lower pressure-bearing body 14, exterior central tube 8 and lower center tube 17; Wherein exterior central tube 8 and the screwed connection of lower pressure ring 10, lower pressure ring 10 overlaps 12 screwed connections with upper piston, and lower piston 13 and lower piston overlap 15 screwed connections, are fixedly connected with as a whole between upper and lower piston bush 12,15; Lower pressure-bearing body 14 and lower center tube 17 screwed connection; Between upper press ring 10 and upper center tube 6, connector 11 and upper piston overlap 12 between, lower pressure-bearing body 14 and lower piston overlap 15 between, all adopt slipper seal between lower piston 13 and lower center tube 17; Form first order plunger shaft between lower pressure ring 10, connector 11 and upper piston cover 12, between lower piston 13, lower pressure-bearing body 14 and lower piston cover 15, form second level plunger shaft; Upper center tube 6 is provided with row's inlet opening pressing down the position between ring 10 and connector 11; Position simultaneously on lower center tube 17 between lower piston 13 and lower pressure-bearing body 14 is also provided with row's inlet opening; The diameter of described inlet opening is 5mm.The retaining mechanism of described packer is made up of top overcoat 3, lock claw 2 and lock tube 5, the upper end medial surface of its middle and upper part overcoat 3 is provided with a positioning step 301, the upper end of lock claw 2 is connected between top connection 1 and top overcoat 3 by this positioning step 301, and the exterior central tube 8 of lock tube 5 bottom and setting mechanism passes through screwed connection; Conciliate by upper center tube 6 the solution sealing mechanism that seal ring 4 forms described packer, separate seal ring 4 and form an entirety with upper center tube 6 by screwed connection.
Wherein lower center tube 17 adopts integral central tubular structure, to improve bonding strength; The length range of compression long packing element type 9 is 400-600mm, and in order to improve the sealing of irregular borehole, its concrete length value is decided to be 500mm.The upper and lower end portion of this compression long packing element type 9 protects a bowl sulfuration respectively and is integrated, to improve packing element intensity with plurality of copper.
Be illustrated in figure 2 the partial enlarged drawing of the utility model lock claw and sleeve portion, wherein the lower end of lock claw 2 and the middle part of lock tube 5 are respectively equipped with lock claw button 201 and the lock tube button 501 of the tooth form of falling sawtooth; When packer be in set with locking state time, lock claw button 201 and lock tube button 501 fastener mutually, and the contact surface of lock claw button 201 and the mutual fastener of lock tube button 501 is all horizontal by a minute angle, and be beneficial to lock between lock claw and lock tube, the value of this minute angle is 5 °.And the medial surface separating seal ring 4 upper end to be set to vertical direction be the inclined-plane at 30o angle, to realize reclaiming the pressure of lock claw 2.
Specific works principle of the present utility model is: in oil pipe, add hydraulic pressure, hydraulic pressure enters the first order plunger shaft of lower pressure ring 10, connector 11 and upper piston cover 12 composition by the inlet opening of lower center tube 17, hydraulic pressure also enters and overlaps in 15 second level plunger shaft formed by lower piston 13, lower pressure-bearing body 14 and lower piston simultaneously, under the effect of hydraulic pressure, the piston of two-stage plunger shaft is pushed up, promote exterior central tube 8 up, compression packing element 9, Seal Oil cover annular space simultaneously; Meanwhile, lock tube 5 moves upward under the promotion of exterior central tube 8, lock claw 2 is inwardly compressed, and realizes climbing button; After pressure increase to 20MPa, stop pressurization, lock claw 2 is rebounded, the button self-locking of lock claw 2 and lock tube 5, so just completes setting and locking of packer.Afterwards, can construct according to squeezing stifled construction sequence.After having constructed, upper lifting pipe post, now, sealing mechanism keeps motionless under the effect of frictional force, upper center tube 6 drives solution seal ring 4 up, by separating the 30o ramp effect of seal ring 4 in lock claw 2, forces lock claw 2 to be separated with lock tube 5, overall setting mechanism is returned to rigging position under the elastic force effect of packing element, realizes deblocking.Filler ring 16 plays the supporting role to lower piston cover 15 under removing seal for packer state, and filler ring 16 and lower center tube 17 pass through screwed connection.
The utility model employing compression long packing element type can realize the positiver sealing to this kind of irregular borehole of open hole well, the retaining mechanism simultaneously adopted can realize self-locking, ensure the continuous and effective of packer, separate sealing mechanism and can realize powerful separation lock ring and lock tube, be returned to initial confined state after making it depart from, reach the function that packer realizes restting.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.The part that the present embodiment does not describe in detail belongs to the known conventional means of the industry, does not describe one by one here.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.

Claims (9)

1. an open hole well squeezes stifled compression long packing element type hydraulic packer, by top connection (1), lock claw (2), top overcoat (3), separate seal ring (4), lock tube (5), upper center tube (6), upper press ring (7), exterior central tube (8), compression long packing element type (9), lower pressure ring (10), connector (11), upper piston cover (12), lower piston (13), lower pressure-bearing body (14), lower piston cover (15), filler ring (16) and lower center tube (17) composition, it is characterized in that: by top connection (1), upper center tube (6), connector (11), lower center tube (17) forms an entirety with screwed connection successively, form the bindiny mechanism of described packer,
Be made up of the sealing mechanism of described packer exterior central tube (8), upper press ring (7), lower pressure ring (10), compression long packing element type (9), wherein exterior central tube (8) and lower pressure ring (10) adopt screwed connection;
The setting mechanism of described packer is made up of lower pressure ring (10), upper piston cover (12), connector (11), lower piston (13), lower piston cover (15), lower pressure-bearing body (14), exterior central tube (8) and lower center tube (17); Wherein exterior central tube (8) and the screwed connection of lower pressure ring (10), lower pressure ring (10) and upper piston cover (12) screwed connection, lower piston (13) and lower piston cover (15) screwed connection, be fixedly connected with as a whole between upper and lower piston bush (12,15); Lower pressure-bearing body (14) and lower center tube (17) screwed connection; All slipper seal is adopted between upper press ring (10) and upper center tube (6), between connector (11) and upper piston cover (12), between lower pressure-bearing body (14) and lower piston cover (15), between lower piston (13) and lower center tube (17); Lower pressure ring (10), between connector (11) and upper piston cover (12), form first order plunger shaft, lower piston (13), between lower pressure-bearing body (14) and lower piston cover (15), form second level plunger shaft; Upper center tube (6) is positioned at the position pressed down between ring (10) and connector (11) and is provided with row's inlet opening; On lower center tube (17), the position be positioned between lower piston (13) and lower pressure-bearing body (14) is also provided with row's inlet opening simultaneously;
The retaining mechanism of described packer is made up of top overcoat (3), lock claw (2) and lock tube (5), the upper end medial surface of its middle and upper part overcoat (3) is provided with a positioning step (301), the upper end of lock claw (2) is connected between top connection (1) and top overcoat (3) by this positioning step (301), and the exterior central tube (8) of lock tube (5) bottom and setting mechanism passes through screwed connection;
Be made up of the solution sealing mechanism of described packer upper center tube (6) reconciliation seal ring (4), separate seal ring (4) and form an entirety with upper center tube (6) by screwed connection.
2. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: lower center tube (17) adopts integral central tubular structure.
3. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the length range of described compression long packing element type (9) is 400-600mm, in order to improve the sealing of irregular borehole.
4. a kind of open hole well as claimed in claim 3 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the length value of described compression long packing element type (9) is 500mm.
5. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the diameter of described inlet opening is 5mm.
6. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the upper and lower end portion of described compression long packing element type (9) protects a bowl sulfuration respectively and is integrated with plurality of copper.
7. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the lower end of described lock claw (2) and the middle part of described lock tube (5) are respectively equipped with lock claw button (201) and the lock tube button (501) of the tooth form of falling sawtooth; When packer be in set with locking state time, lock claw button (201) and lock tube button (501) fastener mutually, and the contact surface of lock claw button (201) and the mutual fastener of lock tube button (501), all horizontal by a minute angle, is beneficial to lock between lock claw and lock tube.
8. a kind of open hole well as claimed in claim 7 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: the value of described minute angle is 5 °.
9. a kind of open hole well as claimed in claim 1 squeezes stifled compression long packing element type hydraulic packer, it is characterized in that: it is the inclined-plane at 30o angle that the medial surface of described solution seal ring (4) upper end is set to vertical direction, to realize reclaiming the pressure of lock claw (2).
CN201420455982.9U 2014-08-14 2014-08-14 A kind of open hole well squeezes stifled compression long packing element type hydraulic packer Expired - Fee Related CN204060611U (en)

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Application Number Priority Date Filing Date Title
CN201420455982.9U CN204060611U (en) 2014-08-14 2014-08-14 A kind of open hole well squeezes stifled compression long packing element type hydraulic packer

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Application Number Priority Date Filing Date Title
CN201420455982.9U CN204060611U (en) 2014-08-14 2014-08-14 A kind of open hole well squeezes stifled compression long packing element type hydraulic packer

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CN204060611U true CN204060611U (en) 2014-12-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630696A (en) * 2017-09-11 2018-01-26 中国石油化工股份有限公司 The underground pressure testing device and its pressure-measuring method of a kind of ground blowout hookup

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630696A (en) * 2017-09-11 2018-01-26 中国石油化工股份有限公司 The underground pressure testing device and its pressure-measuring method of a kind of ground blowout hookup

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141231

Termination date: 20200814