CN208579079U - A kind of oilfield exploitation compensator - Google Patents

Abstract

The utility model discloses a kind of oilfield exploitation compensators, including first sleeve, loop bar and the first limited block, the first sleeve is located at the top of second sleeve, and the inside of first sleeve and second sleeve offers the first groove, the inside of the first groove in first sleeve and second sleeve is respectively arranged at the top and bottom of the loop bar, and first sleeve top and second sleeve be respectively arranged below the first connector and the second connector, the inside of first connector and the second connector is reserved with the second groove, first limited block is fixed on the avris of first sleeve, it is arranged between first limited block and baffle and has elastic component, the upper surface of the second limited block is fixed in the bottom of the gag lever post.The oilfield exploitation compensator can compensate the distance of oil pipe extension, loosen so as to avoid packer and oil pipe, and then can be avoided the damage of downhole packer.

Description

A kind of oilfield exploitation compensator

Technical field

The utility model relates to compensator technical field, specially a kind of oilfield exploitation compensator.

Background technique

Oil extraction in oil field is realized using down-hole string, during oil well exploitation, due to underground work state Transformation (such as temperature and pressure) change, cause the flexible wriggling of tubing string, and lead to the closed failure of packer, and influence well The service life of lower oil pipe, and compensator energy effective compensation tubing string caused by temperature and pressure effect because stretching.

However existing oilfield exploitation compensator, be attached by the packer on bolt and oil pipe, thus It is not easy to the disassembly and installation of compensator, while the connection between the pipeline on compensator is by shear pin, when compensator carries out When flexible, shear pin is cut, and next time needs replacing shear pin when using, relatively complicated so as to cause operating.In view of the above-mentioned problems, anxious Innovative design need to be carried out on the basis of original oilfield exploitation compensator.

Utility model content

The purpose of this utility model is to provide a kind of oilfield exploitation compensators, are proposed now with solving above-mentioned background technique Some oilfield exploitation compensators are to be attached by the packer on bolt and oil pipe, to be not easy to compensator Disassembly and installation, while the connection between the pipeline on compensator is by shear pin, when compensator is stretched, shear pin is cut Disconnected, next time needs replacing shear pin when using, so as to cause relatively complicated problem is operated.

To achieve the above object, the utility model provides the following technical solutions: a kind of oilfield exploitation compensator, including the One sleeve, loop bar and the first limited block, the first sleeve are located at the top of second sleeve, and first sleeve and second sleeve Inside offers the first groove, and it is recessed that first is respectively arranged in first sleeve and second sleeve at the top and bottom of the loop bar The inside of slot, and the top of first sleeve and second sleeve have been respectively arranged below the first connector and the second connector, institute The inside for stating the first connector and the second connector is reserved with the second groove, and the inside of the second groove is equipped with connecting rod One end, and the other end of connecting rod is individually fixed in the top of first sleeve and the bottom of second sleeve, first limit Block is fixed on the avris of first sleeve, and the inside of the first limited block is fixed with pin shaft, and pin shaft is installed on the side end of baffle, It is arranged between first limited block and baffle and has elastic component, and is provided with gag lever post between baffle, the bottom of the gag lever post The upper surface of the second limited block is fixed in portion, and the second limited block is set to the avris of second sleeve.

Preferably, during the first sleeve, second sleeve, the first connector, the second connector and connecting rod are both designed as Hollow round column structure.

Preferably, the loop bar is designed as dies, and loop bar passes through the first groove and first sleeve and second Sleeve constitutes stretching structure.

Preferably, first connector and the second connector pass through the second groove and connecting rod constitutes rotational structure, And connecting rod is designed as " T " font structure.

Preferably, the baffle plate setting has 2, and baffle constitutes rotational structure by pin shaft and the first limited block, and The distance between baffle is less than the length at the top of gag lever post.

Preferably, the elastic element is provided with 2, and elastic element is tilt distribution.

Compared with prior art, the utility model has the beneficial effects that the oilfield exploitation compensator, can stretch oil pipe The distance of contracting compensates, and loosens so as to avoid packer and oil pipe, and then can be avoided the damage of downhole packer；

1, it is provided with the first connector 5 and the second connector 6, and the first connector 5 and the second connector 6 pass through second Groove 7 and connecting rod 8 constitute rotational structure, and connecting rod 8 is designed as " T " font structure, while the first connector 5 and second It is provided with screw thread on the inner wall of connector 6, therefore is convenient for the connection between the first connector 5 and the second connector 6 and oil pipe, Compensator and oil pipe are attached without additional bolt, so that simple and convenient；

2, it is provided with first sleeve 1, second sleeve 2 and loop bar 4, and loop bar 4 is designed as dies, and loop bar 4 constitute stretching structure with first sleeve 1 and second sleeve 2 by the first groove 3, therefore when downhole temperature is too low, oil pipe It shortens, so that the inside of first groove 3 in first sleeve 1 and second sleeve 2 of loop bar 4 is moved, thus first sleeve 1, The distance between second sleeve 2 and loop bar 4 are elongated, to compensate to the distance that oil pipe shortens, and then avoid packer It is loosened with oil pipe, so as to avoid the damage of downhole packer；

3, it is provided with baffle 11, gag lever post 13 and elastic element, and baffle 11 is made up of pin shaft 10 and the first limited block 9 Rotational structure, and the distance between baffle 11 is less than the length at 13 top of gag lever post, while elastic element is under baffle 11 Square tilt distribution, therefore when downhole temperature is too low, oil pipe side is short, and second sleeve generates downward power to first sleeve, so that Gag lever post is separated with baffle, thus ensure that loop bar can stretch in the inside of first sleeve and second sleeve, Jin Erbao Oil pipe can be compensated by having demonstrate,proved compensator, while no setting is required that first sleeve and second sleeve is fixed in shear pin, when When first sleeve and second sleeve are stretched, need to cut off shear pin, thus next time in use, need replacing new shear pin, It is relatively complicated to operate.

Detailed description of the invention

Fig. 1 is that the utility model faces schematic diagram of internal structure；

Fig. 2 is that the utility model faces external structure schematic diagram；

Fig. 3 is the utility model gag lever post mounting structure schematic diagram；

Fig. 4 is enlarged structure schematic diagram at A in the utility model Fig. 1.

In figure: 1, first sleeve；2, second sleeve；3, the first groove；4, loop bar；5, the first connector；6, the second connection Head；7, the second groove；8, connecting rod；9, the first limited block；10, pin shaft；11, baffle；12, elastic element；13, gag lever post；14, Second limited block.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of oilfield exploitation compensator, including first Sleeve 1, second sleeve 2, the first groove 3, loop bar 4, the first connector 5, the second connector 6, the second groove 7, connecting rod 8, One limited block 9, pin shaft 10, baffle 11, elastic element 12, gag lever post 13 and the second limited block 14, first sleeve 1 are located at second set The top of cylinder 2, and the inside of first sleeve 1 and second sleeve 2 offers the first groove 3, the top and bottom difference of loop bar 4 It is installed on the inside of the first groove 3 in first sleeve 1 and second sleeve 2, and under the top of first sleeve 1 and second sleeve 2 Side is respectively arranged with the first connector 5 and the second connector 6, and the inside of the first connector 5 and the second connector 6 is reserved with the Two grooves 7, and the inside of the second groove 7 is equipped with one end of connecting rod 8, and the other end of connecting rod 8 is individually fixed in The top of one sleeve 1 and the bottom of second sleeve 2, the first limited block 9 are fixed on the avris of first sleeve 1, and the first limited block 9 Inside be fixed with pin shaft 10, and pin shaft 10 is installed on the side end of baffle 11, is provided between the first limited block 9 and baffle 11 Elastic element 12, and gag lever post 13 is provided between baffle 11, the upper end of the second limited block 14 is fixed in the bottom of gag lever post 13 Face, and the second limited block 14 is set to the avris of second sleeve 2；

First sleeve 1, second sleeve 2, the first connector 5, the second connector 6 and connecting rod 8 are both designed as hollow circuit cylinder Structure protects petroleum that can flow to the inside of compensator by the first connector 5, then can flow from the second connector 6 Out；

Loop bar 4 is designed as dies, and loop bar 4 is equal by the first groove 3 and first sleeve 1 and second sleeve 2 Stretching structure is constituted, ensure that loop bar 4 will not be detached from first sleeve 1 and second sleeve 2, while ensure that 4 energy of loop bar It is enough to stretch in the inside of first sleeve 1 and second sleeve 2；

First connector 5 and the second connector 6 constitute rotational structure, and connecting rod by the second groove 7 and connecting rod 8 8 are designed as " T " font structure, ensure that the first connector 5 and the second connector 6 can be rotated around connecting rod 8, due to It is provided with screw thread on the inner wall of first connector 5 and the second connector 6, therefore is conveniently connect with oil pipe；

Baffle 11 is provided with 2, and baffle 11 constitutes rotational structure, and baffle by pin shaft 10 and the first limited block 9 The distance between 11 are less than the length at 13 top of gag lever post, ensure that the top of gag lever post 13 can be fixed on the upper of baffle 11 Side, to ensure that relative motion will not occur for first sleeve 1 and second sleeve 2；

Elastic element 12 is provided with 2, and elastic element 12 is tilt distribution, ensure that baffle 11 can be by elastic element 12 support, and when the power in second sleeve 2 is excessive, second sleeve 2 generates downward power to baffle 11 by gag lever post 13, make It obtains baffle 11 to rotate down around pin shaft 10, to ensure that relative motion can occur for first sleeve 1 and second sleeve 2.

Working principle: when using the oilfield exploitation compensator, according to Fig. 1-2, the first connector 5 is rotated first, is connect The second groove 7 on the first connector 5 rotated in connecting rod 8, put followed by the oil pipe for connecting packer lower end It sets to the inside of the first connector 5, since the inner wall of the first connector 5 and the outer wall of oil pipe are screw thread, the first connector 5 It can be fixed on oil pipe, similarly rotate the second connector 6, so that the second connector 6 is mounted on oil pipe, compensator at this time It is mounted on the lower end of packer；

According to Fig. 1 and Fig. 3-4, packer, oil pipe and compensator are then placed on underground, when downhole temperature is too low, Oil pipe shortens, and compensator second sleeve 2 generates downward power to gag lever post 13 by the second limited block 14 at this time, thus gag lever post 13 pairs of 2 baffles 11 generate downward power, so that baffle 11 is rotated down around pin shaft 10, while the elasticity member of 11 lower section of baffle Part 12 is compressed, and when baffle 11 is detached from gag lever post 13 completely, loop bar 4 can be in first sleeve 1 and second sleeve 2 at this time The inside of first groove 3 is moved, so that the distance between first sleeve 1, second sleeve 2 and loop bar 4 are elongated, thus to oil The distance that pipe shortens compensates, and then avoids packer and oil pipe loosens, and when downhole temperature is excessively high, oil pipe becomes Long, the distance between first sleeve 1, second sleeve 2 and loop bar 4 same as above shorten, so that the side length to oil pipe compensates.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (6)

1. a kind of oilfield exploitation compensator, including first sleeve (1), loop bar (4) and the first limited block (9), it is characterised in that: The first sleeve (1) is located at the top of second sleeve (2), and the inside of first sleeve (1) and second sleeve (2) offers It is recessed to be respectively arranged in first sleeve (1) and second sleeve (2) first at the top and bottom of the loop bar (4) for first groove (3) The inside of slot (3), and the top of first sleeve (1) and second sleeve (2) have been respectively arranged below the first connector (5) and The inside of two connectors (6), first connector (5) and the second connector (6) is reserved with the second groove (7), and second The inside of groove (7) is equipped with one end of connecting rod (8), and the other end of connecting rod (8) is individually fixed in first sleeve (1) Top and second sleeve (2) bottom, first limited block (9) is fixed on the avris of first sleeve (1), and the first limit The inside of block (9) is fixed with pin shaft (10), and pin shaft (10) is installed on the side end of baffle (11), first limited block (9) It is arranged have elastic component (12) between baffle (11), and is provided with gag lever post (13), the gag lever post between baffle (11) (13) upper surface of the second limited block (14) is fixed in bottom, and the second limited block (14) is set to the side of second sleeve (2) Side.

2. a kind of oilfield exploitation compensator according to claim 1, it is characterised in that: the first sleeve (1), second Sleeve (2), the first connector (5), the second connector (6) and connecting rod (8) are both designed as hollow cylindrical structure.

3. a kind of oilfield exploitation compensator according to claim 1, it is characterised in that: the loop bar (4) is designed as Dies, and loop bar (4) constitutes flexible knot by the first groove (3) and first sleeve (1) and second sleeve (2) Structure.

4. a kind of oilfield exploitation compensator according to claim 1, it is characterised in that: first connector (5) and Second connector (6) constitutes rotational structure by the second groove (7) and connecting rod (8), and connecting rod (8) is designed as " T " word Type structure.

5. a kind of oilfield exploitation compensator according to claim 1, it is characterised in that: the baffle (11) is provided with 2 It is a, and baffle (11) constitutes rotational structure by pin shaft (10) and the first limited block (9), and the distance between baffle (11) is small Length at the top of gag lever post (13).

6. a kind of oilfield exploitation compensator according to claim 1, it is characterised in that: elastic element (12) setting There are 2, and elastic element (12) is tilt distribution.