CN204373902U - A kind of packer performance pick-up unit - Google Patents

A kind of packer performance pick-up unit Download PDF

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Publication number
CN204373902U
CN204373902U CN201520044663.3U CN201520044663U CN204373902U CN 204373902 U CN204373902 U CN 204373902U CN 201520044663 U CN201520044663 U CN 201520044663U CN 204373902 U CN204373902 U CN 204373902U
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CN
China
Prior art keywords
packer
tail pipe
lock ring
assembly
piston cylinder
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CN201520044663.3U
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Chinese (zh)
Inventor
卢刚
邹刚
杨小成
赵俊峰
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四机赛瓦石油钻采设备有限公司
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Priority to CN201520044663.3U priority Critical patent/CN204373902U/en
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Publication of CN204373902U publication Critical patent/CN204373902U/en

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Abstract

The utility model relates to oil gas field packer performance detection technique field, specifically a kind of packer performance pick-up unit, comprises the power charging assembly, pressure transmitting assembly, analog casing assembly, the tail pipe assembly that connect successively.The beneficial effects of the utility model are: hydraulic rotation can be realized to turn to mechanical thrust, thus are packer gum cover loading lotus; Remove after suppressing pipeline, packer setting load can be kept; There is provided commutation righting mechanism can to mechanical shifting type packer; Can record with checking sealing of packer sealing and grappling whether good; The analog casing of different size can be changed, thus meet the packer detection of different size size; Can repeated disassembled and assembled fast, realize the repeatedly pressure-bearing to packer and grappling test; Structure is simple, and with low cost, easy to operate, highly versatile, is mainly applicable in mechanical setting type packer sealing and grappling Performance Detection.

Description

A kind of packer performance pick-up unit
Technical field
The utility model relates to oil gas field packer performance detection technique field, specifically a kind of packer performance pick-up unit.
Background technology
Packer, as the important subsurface tool of oil gas field, is mainly used in formation testing by layer, oil recovery, water filling, water detection, water blockoff, squeezes stifled, acidifying, the measure construction such as pressure break.
Tubing string weight is particularly utilized to press down the mechanical packer of squeeze packer cartridge, such as Y111 packer, Y211 packer, Y221 packer, RTTS packer, PT packer, MR-3D packer, JS-2A packer, this kind of packer applies pump pressure, at terrestrial operation tubing string owing to not needing ground, tubing string suspending weight is utilized to get final product set packer, and its product price relative moderate, be easy to maintenance and safeguard, at home and abroad receiving in oil field and apply very widely.
These mechanical packers do not have corresponding test unit to test the sealing property of packer and grappling performance before constructing at the scene, some producer only carries out the test of independence to parts such as gum cover combination or anchorage systems, the packer detection equipment of some specialty is too expensive again, expense is too high, cause packer not detect, in construction, packer pressure-bearing and grappling performance are unknown and may cause operation failure.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of packer performance pick-up unit, and its structure is simple, with low cost, easy accessibility, is applicable to repeatedly detecting fast of multiple types and many specifications packer.
For realizing above-mentioned technical purpose, the scheme that the utility model provides is: a kind of packer performance pick-up unit, comprises the power charging assembly, pressure transmitting assembly, analog casing assembly, the tail pipe assembly that connect successively.
Described power charging assembly comprises the pressurization plug and piston cylinder that are connected by No. 1 union head thread, the surface of contact of pressurization plug and piston cylinder arranges No. 1 O RunddichtringO, pressurization plug is provided with No. 1 NPT threaded hole (NPT screw thread, American standard pipe thread), the loading piston with No. 2 O RunddichtringOs adapted with it is set in piston cylinder.
Described pressure transmitting assembly comprises one end and is connected with loading piston, and the other end props up the center push rod of packer.
Described analog casing assembly comprises seal cones and the analog casing for placing packer, one end of seal cones is connected by No. 2 union head threads with piston cylinder, the surface of contact of seal cones and piston cylinder arranges No. 3 O RunddichtringOs, the other end of seal cones and analog casing are threaded connection and use No. 2 holding screws fastening, and junction arranges No. 4 O RunddichtringOs; The inner side of seal cones connects wedge shape cylinder by retainer spring, and the inner side of wedge shape cylinder connects the stepping lock ring being used for center push rod being carried out to step-by-step movement locking by No. 1 holding screw.Seal cones 14 is provided with for suppressing to the packer after setting No. 2 NPT threaded holes testing envelope.
Described tail pipe assembly comprises the tail pipe of built-in centering ring, tail pipe and analog casing are threaded connection and use No. 3 holding screws fastening, tail pipe is provided with some register pins for carrying out temporary transient grappling to packer righting reverse mechanism, has the slight pretension of buffer spring between bottom centering ring and tail pipe.
And described piston cylinder is connected by double thread with No. 1 union head, No. 2 union heads.
And the surface of contact of described pressurization plug and piston cylinder is the conical surface of coupling mutually.
And the surface of contact of described piston cylinder and seal cones is the conical surface of coupling mutually.
And the outer wall of described wedge shape cylinder is provided with the tapered slope adapted with piston cylinder and seal cones contact position, and this tapered slope is about 10 ~ 45 °, preferably 20 °.
And, the inside and outside both sides of described stepping lock ring are buttless thread structure, the pitch of outside buttless thread is greater than the pitch of inner side buttless thread, and both teeth directionals are identical, buttless thread on inner side buttless thread and center push rod outer wall is connected, and the buttless thread on outside buttless thread and wedge shape cylinder inwall is connected; Axially being provided with of stepping lock ring runs through groove milling, and No. 1 holding screw is stretched in lock ring groove milling by wedge shape cylinder, but not contact center bar outer wall.
And arrange lock ring bar between bottom described centering ring and tail pipe, the buttless thread of this lock ring bar outer wall is meshed with the buttless thread of tail pipe bottom interior wall, and lock ring bar be axially arranged with the external diameter making lock ring bar can diastole to the groove milling of slippage bottom tail pipe.
The beneficial effects of the utility model are: hydraulic rotation can be realized to turn to mechanical thrust, thus are packer gum cover loading lotus; Remove after suppressing pipeline, packer setting load can be kept; There is provided commutation righting mechanism can to mechanical shifting type packer; Can record with checking sealing of packer sealing and grappling whether good; The analog casing of different size can be changed, thus meet the packer detection of different size size; Can repeated disassembled and assembled fast, realize the repeatedly pressure-bearing to packer and grappling test; Structure is simple, and with low cost, easy to operate, highly versatile, is mainly applicable in mechanical setting type packer sealing and grappling Performance Detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the B place enlarged drawing of Fig. 1.
Fig. 4 is the C place enlarged drawing of Fig. 1.
Wherein, 1, pressurization plug, 2, No. 1 union head, 3, No. 1 O RunddichtringO, 4, load piston, 5, No. 2 O RunddichtringOs, 6, piston cylinder, 7, center push rod, 8, stepping lock ring, 9, No. 1 holding screw, 10, No. 2 union heads, 11, No. 3 O RunddichtringOs, 12, wedge shape cylinder, 13, retainer spring, 14, seal cones, 15, No. 4 O RunddichtringOs, 16, No. 2 holding screws, 17, analog casing, 18, No. 3 holding screws, 19, register pin, 20, centering ring, 21, tail pipe, 22, buffer spring, 23, lock ring bar, 24, No. 1 NPT threaded hole, 25, No. 2 NPT threaded holes.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The present embodiment provides a kind of packer performance pick-up unit, as shown in Figure 1, comprises the power charging assembly, pressure transmitting assembly, analog casing assembly, the tail pipe assembly that connect successively.
As shown in Figure 2, described power charging assembly comprises the pressurization plug 1 and piston cylinder 6 that are threaded by No. 1 union head 2, pressurization plug 1 arranges No. 1 O RunddichtringO 3 with the surface of contact of piston cylinder 6, pressurization plug 1 is provided with No. 1 NPT threaded hole 24(NPT screw thread, American standard pipe thread), the loading piston 4 with No. 2 O RunddichtringOs 5 adapted with it is set in piston cylinder 6.
Described pressure transmitting assembly comprises one end and is connected with loading piston 4, and the other end props up the center push rod 7 of packer.
As shown in Figure 3, described analog casing assembly comprises seal cones 14 and the analog casing 17 for placing packer, and analog casing 17 can be replaced by the analog casing of different size size as required.One end of seal cones 14 is threaded by No. 2 union heads 10 with piston cylinder 6, seal cones 14 arranges No. 3 O RunddichtringOs 11 with the surface of contact of piston cylinder 6, the other end of seal cones 14 and analog casing 17 are threaded connection and use No. 2 holding screws 16 fastening, and junction arranges No. 4 O RunddichtringOs 15; The inner side of seal cones 14 connects wedge shape cylinder 12 by retainer spring 13, and the inner side of wedge shape cylinder 12 connects the stepping lock ring 8 being used for center push rod 7 being carried out to step-by-step movement locking by No. 1 holding screw 9.Seal cones 14 is provided with for suppressing to the packer after setting No. 2 NPT threaded holes 25 testing envelope.
As shown in Figure 4, described tail pipe assembly comprises the tail pipe 21 of built-in centering ring 20, tail pipe 21 and analog casing 17 are threaded connection and use No. 3 holding screws 18 fastening, tail pipe 21 is provided with some (such as can arrange 4 ~ 10 places) for carrying out the register pin 18 of temporary transient grappling to packer righting reverse mechanism, packer is effectively commutated and enters the state of setting.Have the slight pretension of buffer spring 22 between bottom centering ring 20 and tail pipe 21, centering ring 20 can make packer automatic centering centering.
Further, above-mentioned piston cylinder 6 and No. 1 union head 2, No. 2 union heads 10 are connected by double thread, can realize going up shackle fast.
Further, the surface of contact of above-mentioned pressurization plug 1 and piston cylinder 6 is the conical surface of coupling mutually.When being threaded, the conical surface of pressurization plug 1 and piston cylinder 6 extrudes mutually, makes on the conical surface No. 1 O RunddichtringO 3 form conical surface crush seal.
Further, the surface of contact of above-mentioned piston cylinder 6 and seal cones 14 is the conical surface of coupling mutually.When being threaded, the conical surface of piston cylinder 6 and seal cones 14 extrudes mutually, makes on the conical surface No. 3 O RunddichtringOs 11 form conical surface crush seal.
Further, the outer wall of above-mentioned wedge shape cylinder 12 is provided with the tapered slope adapted with piston cylinder 6 and seal cones 14 contact position, this tapered slope is about 10 ~ 45 ° (preferably 20 °), after power charging assembly suppresses set packer, packing element can produce certain screen resilience, this screen resilience can be delivered on wedge shape cylinder 12 by stepping lock ring 8, then piston cylinder 6 is delivered to by the inclined-plane on wedge shape cylinder 12, produce a power perpendicular to these 20 degree of inclined-planes, this power is decomposed into two component on horizontal direction and vertical direction by inclined-plane, component wherein in horizontal direction can be applied to union head 10 screw thread place, but the component on vertical direction can allow the seal groove at No. 3 O RunddichtringO 11 places produce footpath Light deformation upward, compress No. 3 O RunddichtringOs 11 tightr, better tightness, pressure is larger, produce component larger, No. 3 O RunddichtringOs 11 seal and more compact.
Further, the inside and outside both sides of above-mentioned stepping lock ring 8 are buttless thread structure, the pitch of outside buttless thread is greater than the pitch of inner side buttless thread, and both teeth directionals are identical, buttless thread on inner side buttless thread and center push rod 7 outer wall is connected, and the buttless thread on outside buttless thread and wedge shape cylinder 12 inwall is connected; Axially being provided with of stepping lock ring 8 runs through groove milling, and No. 1 holding screw 9 is stretched in lock ring groove milling by wedge shape cylinder 12, but not contact center bar outer wall.The groove milling at stepping lock ring 8 place is can the elastic body of diastole in order to allow it become an internal-and external diameter, thus be convenient to install, and realizing in stepping process, the outer buttless thread of stepping lock ring 8 and center push rod 7 effectively flip-over type engages, and reaches the object of locking packer setting power.
Further, between bottom above-mentioned centering ring 20 and tail pipe 21, lock ring bar 23 is set, the buttless thread of this lock ring bar 23 outer wall is meshed with the buttless thread of tail pipe 21 bottom interior wall, and lock ring bar 23 be axially arranged with the external diameter making lock ring bar 23 can diastole to the groove milling of slippage bottom tail pipe 21, therefore can carry out the whether slippage in pressure testing process of easy record packer anchorage system by observing or measure the outside displacement of lock ring bar 23.
The assemble sequence of this programme is: lock ring bar 23 is screwed in tail pipe 21, buffer spring 22 is put into bottom tail pipe 21, centering ring 20 is inserted in tail pipe 21, packer to be tested is loaded in analog casing 17, screw thread between connecting analog sleeve pipe 17 and tail pipe 21, with register pin 19, packer righting reverse mechanism is located, then packer pipe core is rotated in lift, packer is made to enter the state of setting, seal cones 14 is threaded with analog casing 17, retainer spring 13 is loaded seal cones 14 inwall, stepping lock ring 8 buttless thread is screwed in wedge shape cylinder 12, groove milling is aimed at No. 1 holding screw 9, then No. 1 holding screw 9 is loaded in stepping lock ring 8 groove milling, but can not conflict on center push rod 7 outer wall, then wedge shape cylinder 12 and stepping lock ring 8 are inserted in seal cones 14, center push rod 7 is enclosed within packer top connection, load No. 3 O RunddichtringOs 11, then the double thread between No. 2 union heads 10 and piston cylinder 6 is connected, loading piston 4 with No. 2 O RunddichtringOs 5 is loaded piston cylinder 6 inwall, load No. 1 O RunddichtringO 3, and the screw thread connected between No. 1 union head 2 and piston cylinder 6, complete assembling.
The principle of work of this programme is: loaded by packer to be tested in analog casing 17, with register pin 19, packer righting reverse mechanism is located, then packer pipe core is rotated in lift, packer is made to enter the state of setting, No. 1 NPT threaded hole 24 of pressurization plug 1 is connected external pressuring pump pipeline, carry out power to suppress, hydraulic coupling is converted into the mechanical thrust to center push rod 7 by loading piston 4, thus pass to packer upper end, power loading is carried out to packer, center push rod 7 moves to packer simultaneously, now stepping lock ring 8 can be subject to the power that center push rod 7 outer wall buttless thread upwards pushes up, because stepping lock ring 8 has milling groove structure, therefore stepping lock ring 8 can be beated and be locked, now can remove the pressuring pump pipeline at No. 1 NPT threaded hole 24 place, the setting force of packer can be kept by lock ring, can economize energy.Then air driven pump is suppressed joint to be connected with in seal cones 14 a No. 2 NPT threaded hole 25, carry out packer sealing and grappling system can test, whether observe packing element combination can pressure-bearing, whether lock ring bar 23 can record packer slip can slippage, after the pressure testing of packer assembly completes, air driven pump pressure release, the double thread that then only need strike pine No. 1 union head 2 and No. 2 union heads 10 can remove the grappling to compressive load under packer, then stepping lock ring 8 is rotated to initial position, testing seal about packer and grappling test next time can be done again fast.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvement or distortion, these improve or distortion also should be considered as protection domain of the present utility model.

Claims (8)

1. a packer performance pick-up unit, comprises the power charging assembly, pressure transmitting assembly, analog casing assembly, the tail pipe assembly that connect successively, it is characterized in that:
Described power charging assembly comprises the pressurization plug and piston cylinder that are connected by No. 1 union head thread, the surface of contact of pressurization plug and piston cylinder arranges No. 1 O RunddichtringO, pressurization plug is provided with No. 1 NPT threaded hole, arranges the loading piston with No. 2 O RunddichtringOs adapted with it in piston cylinder;
Described pressure transmitting assembly comprises one end and is connected with loading piston, and the other end props up the center push rod of packer;
Described analog casing assembly comprises seal cones and the analog casing for placing packer, one end of seal cones is connected by No. 2 union head threads with piston cylinder, the surface of contact of seal cones and piston cylinder arranges No. 3 O RunddichtringOs, the other end of seal cones and analog casing are threaded connection and use No. 2 holding screws fastening, and junction arranges No. 4 O RunddichtringOs; The inner side of seal cones connects wedge shape cylinder by retainer spring, and the inner side of wedge shape cylinder connects the stepping lock ring being used for center push rod being carried out to step-by-step movement locking by No. 1 holding screw; Seal cones is provided with for suppressing to the packer after setting No. 2 NPT threaded holes testing envelope;
Described tail pipe assembly comprises the tail pipe of built-in centering ring, tail pipe and analog casing are threaded connection and use No. 3 holding screws fastening, tail pipe is provided with some register pins for carrying out temporary transient grappling to packer righting reverse mechanism, has the slight pretension of buffer spring between bottom centering ring and tail pipe.
2. a kind of packer performance pick-up unit according to claim 1, is characterized in that: described piston cylinder is connected by double thread with No. 1 union head, No. 2 union heads.
3. a kind of packer performance pick-up unit according to claim 1 and 2, is characterized in that: the surface of contact of described pressurization plug and piston cylinder is the conical surface of coupling mutually.
4. a kind of packer performance pick-up unit according to claim 1 and 2, is characterized in that: the surface of contact of described piston cylinder and seal cones is the conical surface of coupling mutually.
5. a kind of packer performance pick-up unit according to claim 4, is characterized in that: the outer wall of described wedge shape cylinder is provided with the tapered slope adapted with piston cylinder and seal cones contact position.
6. a kind of packer performance pick-up unit according to claim 5, is characterized in that: described tapered slope is 10 ~ 45 °.
7. a kind of packer performance pick-up unit according to claim 1, it is characterized in that: the inside and outside both sides of described stepping lock ring are buttless thread structure, the pitch of outside buttless thread is greater than the pitch of inner side buttless thread, and both teeth directionals are identical, buttless thread on inner side buttless thread and center push rod outer wall is connected, and the buttless thread on outside buttless thread and wedge shape cylinder inwall is connected; Axially being provided with of stepping lock ring runs through groove milling, and No. 1 holding screw is stretched in lock ring groove milling by wedge shape cylinder, but not contact center bar outer wall.
8. a kind of packer performance pick-up unit according to claim 1, it is characterized in that: between bottom described centering ring and tail pipe, lock ring bar is set, the buttless thread of this lock ring bar outer wall is meshed with the buttless thread of tail pipe bottom interior wall, and lock ring bar be axially arranged with the external diameter making lock ring bar can diastole to the groove milling of slippage bottom tail pipe.
CN201520044663.3U 2015-01-22 2015-01-22 A kind of packer performance pick-up unit CN204373902U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568418A (en) * 2015-01-22 2015-04-29 四机赛瓦石油钻采设备有限公司 Packer performance detecting device
CN104897349A (en) * 2015-06-29 2015-09-09 株洲时代新材料科技股份有限公司 Device and method for testing sealing performance of packer rubber
CN104990672A (en) * 2015-06-29 2015-10-21 株洲时代新材料科技股份有限公司 Method and device for testing sealing performance of rubber sleeve of packer
CN108732022A (en) * 2017-04-25 2018-11-02 中国石油化工股份有限公司 Device and method for the test of packer pressure-bearing
CN109283063A (en) * 2018-10-18 2019-01-29 中国石油化工股份有限公司 A kind of packer Withstand test device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568418A (en) * 2015-01-22 2015-04-29 四机赛瓦石油钻采设备有限公司 Packer performance detecting device
CN104568418B (en) * 2015-01-22 2017-02-22 四机赛瓦石油钻采设备有限公司 Packer performance detecting device
CN104897349A (en) * 2015-06-29 2015-09-09 株洲时代新材料科技股份有限公司 Device and method for testing sealing performance of packer rubber
CN104990672A (en) * 2015-06-29 2015-10-21 株洲时代新材料科技股份有限公司 Method and device for testing sealing performance of rubber sleeve of packer
CN104990672B (en) * 2015-06-29 2018-09-18 株洲时代新材料科技股份有限公司 Packing element sealing performance test method and sealing property testing equipment
CN108732022A (en) * 2017-04-25 2018-11-02 中国石油化工股份有限公司 Device and method for the test of packer pressure-bearing
CN109283063A (en) * 2018-10-18 2019-01-29 中国石油化工股份有限公司 A kind of packer Withstand test device

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