CN209483255U

CN209483255U - Releasing device

Info

Publication number: CN209483255U
Application number: CN201821963053.3U
Authority: CN
Inventors: 李怀文; 刘伟; 王超; 邵力飞; 槐春生; 崔臣滨
Original assignee: China Petroleum and Natural Gas Co Ltd
Current assignee: China Petroleum and Natural Gas Co Ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2019-10-11
Anticipated expiration: 2028-11-26

Abstract

The utility model discloses a kind of releasing devices, belong to technical field of petroleum machinery.When passing through releasing device connection construction tool provided by the utility model, retaining groove and clamping boss are for carrying the weight of construction tool.Therefore, in order to enable releasing device carries heavier construction tool, it can be in the case where lock tube diameter be certain, increase retaining groove along the depth in the direction of the outer wall inward wall of back-off sub, increase clamping boss along the length in the direction for grabbing spring outer wall inward wall, so that the contact portion of retaining groove and clamping boss is more simultaneously.It that is to say, in the case where the peripheral diameter of releasing device provided by the utility model is certain, by increasing the length of clamping boss and the depth of retaining groove, it can be realized and carry heavier construction tool, so that releasing device provided by the utility model is using more flexible.

Description

Releasing device

Technical field

The utility model relates to technical field of petroleum machinery, in particular to a kind of releasing device.

Background technique

Operation of giving up, which refers to, connect the connecting component in releasing device with the construction tool in tripping in oil well is needed, then will Releasing device is placed in oil well together with construction tool, later by other in the connecting component and releasing device in releasing device Component disconnects, so that construction tool is fallen into oil well with connecting component.Since operation of giving up is commonly used in Process of Oil Well Drilling Process, therefore, it is particularly significant just to seem for oil drilling for releasing device.

In the related technology, as shown in Figure 1, releasing device includes connecting tube 01, sliding sleeve 02, closing piece 03 and back-off sub 04.It is sliding Set 02 is placed in connecting tube 01, and the outer wall of the first end of sliding sleeve 02 is connect with the inner wall of connecting tube 01 by pin 05.Connection Through-hole is provided with at the position of the second end in contact of sliding sleeve 02 on the tube wall of pipe 01.One end of closing piece 03 is embedded in through-holes, and The other end of closing piece 03 is exposed to the outside of connecting tube 01, is connecting so that the first end of back-off sub 04 is suspended on by closing piece 03 On the outer wall of pipe 01.Wherein, groove is provided on the outer wall between the first end and second end of sliding sleeve 02.Using shown in FIG. 1 Releasing device give up operation when, be thrown into a ball sealer 06 into releasing device from the well head of oil well, ball sealer 06 it is straight Diameter is greater than the internal diameter of sliding sleeve 02, therefore the meeting baffle seal ball 06 of sliding sleeve 02 moves downward.Backward ball sealer 06 apply pressure, when When pressure on ball sealer 06 is greater than reference pressure, the pin 05 between sliding sleeve 02 and connecting tube 01 is disconnected, so that ball sealer 06 Sliding sleeve 02 is driven to continue to move downward.Wherein, closing piece 03 is therefore to work as cunning along the telescopic component of 01 radial direction of connecting tube When concave slot sports to the through hole of connecting tube 01 on set 02, effect groove to sliding sleeve 02 on of the closing piece 03 due to own resilient Place's movement, so that back-off sub 04 is disconnected pipe 01, so that realization is by the construction tool that 04 second end of back-off sub connects and gives up First 04 places down shaft bottom together.

In the related art, the other end of closing piece 03 can carry the weight for the construction tool connecting with back-off sub 04.In order to Ensure to give up the safety of operation, generally closing piece 03 is arranged along the length of 01 radial direction of connecting tube larger, could make Back-off sub 04 and the part of another end in contact of closing piece 03 are more, can carry the weight of construction tool.It will lead to so whole A releasing device is larger along the peripheral diameter of connecting tube radial direction, so that the application scenarios of releasing device compare restriction, Affect the application flexibility of releasing device.

Utility model content

The utility model provides a kind of releasing device, and application is more flexible.The technical solution is as follows:

A kind of releasing device, which is characterized in that the releasing device includes: top connection 11, grabs spring 12, back-off sub 13 and lock Set 14；

The outer wall of the first end of the top connection 1 connect with the inner wall of the first end for grabbing spring 12, the spring 12 of grabbing A seal boss is configured on inner wall along circumferential direction, the internal diameter of the seal boss is less than when give up operation from described The diameter for the ball sealer that the second end of top connection 11 is thrown into；

The second end for grabbing spring 12 includes multiple claws, and the multiple claw forms umbrella-shaped structure, the multiple claw In at least one claw inner wall on be each configured with a clamping boss, configured at least on the outer wall of the back-off sub 13 One retaining groove, the lock tube 14 be fixed on it is described grab on the outer wall of spring 12, and it is described more under the external force of the lock tube 14 At least one clamping boss on a claw can be connected at least one described retaining groove；

The inner wall of the first end of the lock tube 14 is contacted with the outer wall of the top connection 11, the first end of the lock tube 14, There are a cavity between the first end for grabbing spring 12 and the outer wall of the top connection 11, be provided in the top connection 11 to A few first through hole, at least one described first through hole are connected to the cavity.

Optionally, the lock tube 14 is fixed on the outer wall for grabbing spring 12 by least one shear pin or at least one bolt On.

Optionally, the releasing device further includes top connection sealing ring and grabs spring sealing ring；

The inner wall that the top connection sealing ring is located at the first end of the lock tube 14 is contacted with the outer wall of the top connection 11 Position at, it is described grab spring sealing ring be located at the top connection 11 first end outer wall and the first end for grabbing spring 12 it is interior At the position of wall contact.

Optionally, described grab is provided at least one second through-hole in spring 12, at least one described second through-hole is located at described It grabs at the position that spring 12 is not contacted with the top connection 11 and the back-off sub 13, and at least one described second through-hole is close to institute Seal boss is stated, at least one third through-hole, each third at least one described third through-hole are provided in the lock tube 14 Through-hole is connected to second through-hole.

Optionally, the releasing device further includes gasket 15 and at least one pressure cap 16；

The gasket 15 passes through at the port for the first end that at least one described pressure cap 16 is fixed on the back-off sub 13, institute The first end for stating back-off sub 13 refers to close to one end of the seal boss.

Optionally, it is arranged fluted in the multiple claw on the outer wall of each claw, the groove grabs spring 12 described in The length of axial direction is less than each claw along the length for grabbing 12 axial direction of spring.

Optionally, the outer wall of the first end of the top connection 11 and the inner wall of the first end for grabbing spring 12 are connected by screw thread It connects.

The beneficial effect of technical solution provided by the utility model is:

When using releasing device provided by the utility model give up operation when, from the second end of top connection to dress of giving up It is thrown into a ball sealer in setting, injects liquid into releasing device from the second end of top connection later.Due to top connection and grab spring Connection is grabbed configured with a seal boss on spring, and the internal diameter of seal boss is less than the diameter of ball sealer, therefore, seal boss resistance Gear ball sealer moves downward.Liquid in releasing device is stopped by ball sealer can be by the through-hole of at least one in top connection It is flowed into the first end of lock tube, grabs the first end of spring and the outer wall of top connection surrounds in cavity.Connected again due to top connection with spring is grabbed It connects, top connection and grabs spring and can be used as an entirety, therefore when the pressure of liquid in cavity is greater than reference pressure, is fixed on and grabs Lock tube on spring outer wall can disconnect and grab the connection of spring, move upwards.This meeting so that by under the external force of lock tube, until A few clamping boss is connected at least clamping boss at least one retaining groove and pops up from least one retaining groove, To which back-off sub is fallen downwards.

When passing through releasing device connection construction tool provided by the utility model, retaining groove and clamping boss are for holding Carry the weight of construction tool.Therefore, in order to enable releasing device carries heavier construction tool, can be certain in lock tube diameter In the case of, increase retaining groove along the depth in the direction of the outer wall inward wall of back-off sub, while increasing clamping boss along grabbing The length in the direction of spring outer wall inward wall, so that the contact portion of retaining groove and clamping boss is more.It that is to say, it is practical at this In the case that the peripheral diameter of the releasing device of novel offer is certain, by increasing the length of clamping boss and the depth of retaining groove Degree can be realized and carry heavier construction tool, so that releasing device provided by the utility model is using more flexible.

Detailed description of the invention

Fig. 1 is a kind of releasing device that the relevant technologies provide；

Fig. 2 is a kind of releasing device provided by the embodiment of the utility model.

Appended drawing reference:

01: connecting tube；02: sliding sleeve；03: closing piece；04: back-off sub；05: pin；06: ball sealer；11: top connection；12: grabbing Spring；13: back-off sub；14: lock tube；15: gasket；16: at least one pressure cap.

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer Type embodiment is described in further detail.

Fig. 2 is a kind of structural schematic diagram of releasing device provided by the embodiment of the utility model.As shown in Fig. 2, dress of giving up To set include: top connection 11, grabs spring 12, back-off sub 13 and lock tube 14.

The outer wall of the first end of top connection 11 is connect with the inner wall for the first end for grabbing spring 12, is grabbed on the inner wall of spring 12 circumferentially Direction is configured with a seal boss, and the internal diameter of seal boss is less than when give up operation to be thrown into from the second end of top connection 11 Ball sealer diameter.

The second end for grabbing spring 12 includes multiple claws, and multiple claws form umbrella-shaped structure, at least one of multiple claws It is each configured with a clamping boss on the inner wall of claw, at least one retaining groove, lock are configured on the outer wall of back-off sub 13 Set 14 is fixed on the outer wall for grabbing spring 12, and at least one clamping boss under the external force of lock tube 14 on multiple claws can block It connects at least one retaining groove.

The inner wall of the first end of lock tube 14 is contacted with the outer wall of top connection 11, and the first end of lock tube 14 grabs the first of spring 12 There are a cavity between end and the outer wall of top connection 11, at least one first through hole is provided in top connection 11, at least one First through hole is connected to cavity.

Wherein, the implementation that the outer wall of the first end of top connection 11 is connect with the inner wall for the first end for grabbing spring 12 can be with Are as follows: external screw thread can be configured on the outer wall of the first end of top connection 11, interior spiral shell can be configured by grabbing on the inner wall of the first end of spring 12 The inner wall of line, the outer wall of the first end of top connection 11 and the first end for grabbing spring 12 is connected through a screw thread.

Optionally, internal screw thread can also be configured on the outer wall of the first end of top connection 11, grabs the inner wall of the first end of spring 12 On can also configure external screw thread, the inner wall of the outer wall of the first end of top connection 11 and the first end for grabbing spring 12 is connected through a screw thread.

Optionally, the outer wall of the first end of top connection 11 and the inner wall for the first end for grabbing spring 12 can also be welded.Certainly, The connection type of the outer wall of the first end of top connection 11 and the inner wall for the first end for grabbing spring 12 can also have other modes, this is practical New embodiment is it is not limited here.

In addition, lock tube 14 can be fixed on the outer wall for grabbing spring 12 by least one shear pin or at least one bolt.Its In, when lock tube 14 is fixed on the outer wall for grabbing spring 12 by least one shear pin, at least one can be provided on lock tube 14 A through-hole is provided with a groove, any at least one shear pin in the circumferential direction for grabbing spring on the outer wall for grabbing spring 12 The through-hole that the first end of shear pin passes through on lock tube 12 is embedded into the groove grabbed on spring.

Optionally, it can also be provided at least one through-hole on lock tube 14, be provided at least one on the outer wall for grabbing spring 12 Groove, the through-hole that the first end of any shear pin at least one shear pin passes through on lock tube 12 are embedded into one grabbed on spring In groove.

When lock tube 14 is fixed on the outer wall for grabbing spring 12 by least one bolt, can be provided on lock tube 14 to A few threaded hole, grabs and is provided at least one blind hole on the outer wall of spring 12, each blind hole is equipped with spiral shell at least one blind hole Line, the threaded hole that the first end of any bolt at least one bolt passes through on lock tube 12 enter one grabbed on spring 12 In a blind hole.

In addition, being configured at least one retaining groove on the outer wall of back-off sub 13.When retaining groove is a groove, card Position groove is the groove opened along the circumferential direction of 13 outer wall of back-off sub.When retaining groove is multiple grooves, the number of retaining groove It measures identical as the quantity of claw.The corresponding retaining groove of a clamping boss i.e. on claw.

In addition, using releasing device provided by the utility model give up operation when, usually from top connection 11 Second end is thrown into a ball sealer, backward releasing device in inject liquid.Resistance of the liquid by ball sealer in releasing device Gear can be flowed into the first end of lock tube 14, the first end for grabbing spring 12 and top connection 11 by the through-hole of at least one in top connection Outer wall surrounds in cavity, enters liquid in cavity in order to prevent and leaks, to influence the pressure into the liquid in cavity Power, therefore, releasing device can also configure top connection sealing ring and grab spring sealing ring.Top connection sealing ring is located at the of lock tube 14 At the position that the inner wall of one end is contacted with the outer wall of top connection 11, grab spring sealing ring be located at top connection 11 first end outer wall with It grabs at the position of inner wall contact of the first end of spring 12.

Wherein, top connection sealing ring can be O-ring seal, or V-shaped seal ring, it is, of course, also possible to be other The sealing ring of type, the utility model embodiment is it is not limited here.The type for grabbing spring sealing ring can be sealed with reference to top connection The type of circle, details are not described herein.

In addition, in practical applications, after releasing device provided by the embodiment of the utility model is placed in oil well, by Sundries in oil well is more, and the sundries in oil well may enter in releasing device, it is thus possible to which needs first will be in oil well Releasing device is cleaned.Due to the general connection construction tool of back-off sub 13, liquid possibly for cleaning releasing device can not It is flowed out from back-off sub 13, therefore, grabs and be provided at least one second through-hole in spring 12, at least one second through-hole, which is located at, grabs spring 12 At the position not contacted with top connection 11 and back-off sub 13, and at least one second through-hole is opened in seal boss, lock tube 14 There is at least one third through-hole, each third through-hole at least one third through-hole is connected to second through-hole.Pass through this After sample aperture, the liquid for cleaning releasing device can be flowed out outside releasing device by third through-hole and the second through-hole Portion.

In addition, in practical applications, give up connection construction tool when, give up dress since the construction tool having does not need cleaning The liquid set enters, and therefore, releasing device can also configure gasket 15 and at least one pressure cap 16, and gasket 15 passes through at least one Pressure cap 16 is fixed at the port of the first end of back-off sub 13, and the first end of back-off sub 13 refers to close to one end of seal boss. In this way, the liquid for cleaning releasing device can be stopped to enter in the construction tool connecting with back-off sub 13.

Wherein, the diameter of gasket 16 is greater than 13 internal diameter of back-off sub, is less than or equal to 13 outer diameter of back-off sub.It can be in gasket 16 It is provided at least one through-hole, at least one blind hole is provided at the port of 13 first end of back-off sub, it is any at least one blind hole Screw thread is configured in blind hole.Any pressure cap at least one pressure cap 15 can pass through at least one through-hole being provided on gasket 16 It enters in a blind hole, at the port for the first end for being fixed on back-off sub 16 to realize at least one pressure cap 15 for gasket.Its In, at least one pressure cap 15 can be bolt, or have externally threaded tubing string, the utility model embodiment is not done herein It limits.

In addition, in practical applications, popped up from retaining groove for the ease of claw, can in multiple claws each card Be arranged on the outer wall of pawl it is fluted, groove along grab 12 axial direction of spring length be less than each claw edge grab 2 axial direction of spring Length.

Wherein, claw refers to that edge grabs 12 axial direction of spring and opens at least one fluting in the second end for grabbing spring 12, at least one The opening of each fluting is located at the port for the second end for grabbing spring 12 in fluting.Wherein, at least one fluting can with U-type groove, It can be square fluting, can also be certainly other shapes of fluting, the utility model embodiment is it is not limited here.

In conclusion the preferred embodiment of only the utility model, is not intended to limit the utility model, it is all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims

1. a kind of releasing device, which is characterized in that the releasing device includes: top connection (11), grabs spring (12), back-off sub (13) With lock tube (14)；

The outer wall of the first end of the top connection (11) is connect with the inner wall of the first end for grabbing spring (12), described to grab spring (12) Inner wall on be configured with a seal boss along circumferential direction, the internal diameter of the seal boss is less than when give up operation from institute State the diameter for the ball sealer that the second end of top connection (11) is thrown into；

The second end for grabbing spring (12) includes multiple claws, the multiple claw formation umbrella-shaped structure, in the multiple claw At least one claw inner wall on be each configured with a clamping boss, configured at least on the outer wall of the back-off sub (13) One retaining groove, the lock tube (14) be fixed on it is described grab on the outer wall of spring (12), and under the external force of the lock tube (14) At least one clamping boss on the multiple claw can be connected at least one described retaining groove；

The inner wall of the first end of the lock tube (14) is contacted with the outer wall of the top connection (11), and the first of the lock tube (14) There are a cavitys between end, the first end for grabbing spring (12) and the outer wall of the top connection (11), in the top connection (11) at least one first through hole is provided in, at least one described first through hole is connected to the cavity.

2. releasing device as described in claim 1, which is characterized in that the lock tube (14) is by least one shear pin or at least One bolt is fixed on described grab on the outer wall of spring (12).

3. releasing device as described in claim 1, which is characterized in that the releasing device further includes top connection sealing ring and grabs Spring sealing ring；

The inner wall that the top connection sealing ring is located at the first end of the lock tube (14) is contacted with the outer wall of the top connection (11) Position at, it is described grab spring sealing ring be located at the top connection (11) first end outer wall and the first end for grabbing spring (12) Inner wall contact position at.

4. releasing device as described in claim 1, which is characterized in that described to grab that be provided at least one in spring (12) second logical Hole, at least one described second through-hole are grabbed spring (12) described in and are not contacted with the top connection (11) and the back-off sub (13) Position at, and at least one described second through-hole be provided in the seal boss, the lock tube (14) at least one Three through-holes, each third through-hole at least one described third through-hole are connected to second through-hole.

5. releasing device as described in claim 1, which is characterized in that the releasing device further includes gasket (15) and at least one A pressure cap (16)；

The gasket (15) passes through at the port for the first end that at least one described pressure cap (16) is fixed on the back-off sub (13), The first end of the back-off sub (13) refers to close to one end of the seal boss.

6. claim 1 to claim 5 it is any as described in releasing device, which is characterized in that it is each in the multiple claw Be arranged on the outer wall of claw it is fluted, the length that the groove grabs spring (12) axial direction described in be less than each claw along institute State the length for grabbing spring (12) axial direction.

7. claim 1 to claim 5 it is any as described in releasing device, which is characterized in that the of the top connection (11) The outer wall of one end and the inner wall of the first end for grabbing spring (12) are connected through a screw thread.