CN208203189U - A kind of hydraulic releasing device - Google Patents

Abstract

The utility model relates to a kind of hydraulic releasing devices of oil field liner completion operation to belong to the technical field in terms of tail pipe has not hung well suitable for the completion practice given up by hydraulic way to tail pipe.By including lifting pipe nipple, inner sleeve, block, shear pin, sealing ring, baffle ring, shell to form.It is characterized by: lifting pipe nipple and shell are stuck by block, inner sleeve lower part is fixed on baffle ring by shear pin, baffle ring is threadingly attached to lifting pipe nipple lower end, lift pipe nipple and shell, sealing ring is equipped between inner sleeve and baffle ring, sealing ring is equipped between inner sleeve and baffle ring, when being suppressed into pipe, inner sleeve can cut shear pin under the action of interior pressure and open biography fluid apertures, discharge block, and then shell is disengaged when above mentioning, realize hydraulic releasing, the utility model structure is simple, latus rectum size in casing is also ensured that using operation is simple and reliable, subsequent lower tool is not influenced carries out measure operation.

Description

A kind of hydraulic releasing device

Technical field

The utility model relates to a kind of hydraulic releasing devices of oil field liner completion operation, are suitable for through hydraulic way to tail The completion practice that pipe is given up belongs to the technical field in terms of tail pipe has not hung well.

Background technique

In oil gas field completion practice technical field, liner completion technology is universal.In the complete well in part, due to Site Design It is required that or construction and economic aspect demand, do not use tail tube hanging, but tail pipe be directly sent to shaft bottom, and give up Process, this requires need to be realized with a kind of safe and reliable releasing tool than hanger simple economy but again.It loses Hand device, which is broadly divided into, mechanically gives up and fluid pressure type is given up two major classes.Hydraulic releasing device is comparatively relatively more square on using operation Just, simply, practicability is stronger.Therefore the domestic loss device given up by hydraulic way developed in recent years is relatively more.Such as patent Number it is " CN201120295388.4 ", the Chinese utility model patent of entitled " a kind of dropper ", top connection including upper end, The lower contact of lower end and sliding sleeve for cooperating upper and lower connector integrally to move down when suppressing.Such method advantage is that structure is simple, The disadvantage is that shear pin is directly connected between top connection and sliding sleeve, in practical applications, because top connection is to connect tail with lower contact The stressed member of pipe string, the shear pin hole in top connection will deform in tail pipe decentralization process due to by pulling force or extruding force, this is just Cause shear pin in the shear pin hole of deformation also can stress deformation, and then it is unstable to ultimately cause shear pin shear force, this can be to being given up Device brings risk in application process.

Summary of the invention

The purpose of this utility model is that it is simple, use reliability to provide a kind of structure in order to optimize liner completion operation Hydraulic releasing device.

By including lifting pipe nipple, inner sleeve, block, shear pin, sealing ring, baffle ring, shell to form, feature exists the utility model It is stuck in: the lifting pipe nipple and the shell by the block, the lifting pipe nipple is equipped with matches with the block The slot of card；The inner sleeve upper outside blocks the block, and anti-stop block radial motion makes the lifting pipe nipple and the shell Without axial relative movement；The inner sleeve lower part is fixed on the baffle ring by the shear pin, and the baffle ring is connected through a screw thread In the lifting pipe nipple lower end；It is equipped with sealing ring between the lifting pipe nipple and the shell, inner sleeve and the baffle ring, it is described Sealing ring is equipped between inner sleeve and the baffle ring；The lifting pipe nipple and the shell are respectively equipped with biography fluid apertures, make the inner sleeve Outside communicates between different sealing face with the tail pipe external space.

The beneficial functional of the utility model is: the utility model is easy to operate, can be used for various types of wells, such as straight Well, high angle hole, horizontal well etc., and can ensure latus rectum size in casing, subsequent lower tool is not influenced carries out measure operation.

Detailed description of the invention

Fig. 1 is hydraulic releasing device initial configuration schematic diagram described in the utility model embodiment.

Fig. 2 is structural schematic diagram after hydraulic releasing device inner sleeve described in the utility model embodiment glides.

Fig. 3 is after hydraulic releasing device inner sleeve described in the utility model embodiment glides, and block is radial inwardly when above mentioning Structural schematic diagram after movement.

Fig. 4 is structural schematic diagram after hydraulic releasing device described in the utility model embodiment is given up.

Specific embodiment

The structural principle of the utility model and working principle are described in detail with reference to the accompanying drawing:

The utility model is mainly used for oil field leak stopping water plugging string and other tail pipes are not hung in completion practice, hydraulic releasing Device top jointed rod, the tail pipe of lower part connecting sleeve composition realize that tail pipe, which is sent to shaft bottom, carries out hydraulic releasing operation.

Referring to Fig. 1, the utility model hydraulic releasing device, by lifting pipe nipple 1, inner sleeve 2, block 3, shear pin 5, baffle ring 6, shell 7 compositions.The lifting pipe nipple 1 and the shell 7 are stuck by the block 3, the lifting pipe nipple 1 equipped with it is described Slot of the block 3 with card；2 upper outside of inner sleeve blocks the block 3, and anti-stop block 3 moves radially, and makes the lifting pipe nipple 1 with the shell 7 without axial relative movement；2 lower part of inner sleeve is fixed on the baffle ring 6 by the shear pin 5, the gear Ring 6 is threadingly attached to 1 lower end of lifting pipe nipple；The lifting pipe nipple 1 and the shell 7, inner sleeve 2 and the baffle ring 6 Between be equipped with sealing ring, between the inner sleeve 2 and the baffle ring 6 be equipped with sealing ring；The lifting pipe nipple 1 and the shell 7 It is respectively equipped with and passes fluid apertures 4, make to communicate between the 2 outside different sealing face of inner sleeve with the tail pipe external space.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model hydraulic releasing device, in use, first by drilling rod by hydraulic releasing device And tail pipe tubing string is fed through after shaft bottom, is suppressed into pipe, pressure acts on the upper surface and lower end surface of inner sleeve 2, due to inner sleeve 2 There is different sealing face in outside with lifting pipe nipple 1 and baffle ring 6 respectively, so that inner sleeve 2 is whole to have downward pressure；When pressure is raised to To a certain degree, inner sleeve 2 cut shear pin 5,2 downlink of inner sleeve, release block 3 laterally limit, and open pass fluid apertures 4 make overpressure to Outer pressure release is managed, pipe internal and external pressure balance is reached；Above lift pipe nipple 1, the inside sidesway of vertical axis under external force of block 3 Dynamic, lifting pipe nipple 1 and 7 off card of shell, shell 7 can be detached from drilling tool uplink by lifting pipe nipple 1 and internal component, and realization is given up Operation.

Claims (2)

1. a kind of hydraulic releasing device, by lifting pipe nipple (1), inner sleeve (2), block (3), shear pin (5), baffle ring (6), shell (7) group At, which is characterized in that the lifting pipe nipple (1) and the shell (7) are stuck by the block (3), the inner sleeve (2), shear pin (5), baffle ring (6) are arranged on the inside of the lifting pipe nipple (1), the lifting pipe nipple (1) and the shell (7), It is equipped with sealing ring between inner sleeve (2) and the baffle ring (6), sealing ring is equipped between the inner sleeve (2) and the baffle ring (6), The lifting pipe nipple (1) and the shell (7), which are respectively equipped with, passes fluid apertures (4), makes on the outside of the inner sleeve (2) between different sealing face It is communicated with the tail pipe external space.

2. a kind of hydraulic releasing device according to claim 1, it is characterized in that the lifting pipe nipple (1) is equipped with and the gear Slot of the block (3) with card, the inner sleeve (2) limit the block (3) and move radially, and make the lifting pipe nipple (1) and the shell (7) without axial relative movement, inner sleeve (2) lower part is fixed on the baffle ring (6) by the shear pin (5), the baffle ring (6) it is threadingly attached to lifting pipe nipple (1) lower end.