CN208486862U - A kind of cable packer - Google Patents

Abstract

It is anti-to solve sealing mechanism in advance the utility model relates to a kind of cable packer, including setting mechanism, locking mechanism, sealing mechanism, anchor mechanism, solution sealing mechanism；The anti-solution sealing mechanism in advance is by components such as housing, anchoring pawl, tablettings, it is located at when packer low pressure exception and puts on anchoring pawl stretching outside, it is anchored on casing wall, packer from opening in advance caused by when preventing because of low pressure exception, anchoring pawl is retracted into outer put on when down-hole pressure restores normal.

Description

A kind of cable packer

Technical field

The utility model belongs to petroleum, natural gas completion technique field, in particular to a kind of cable packer.

Background technique

Flow string is hung in order to insulate oil pipe and casing ring set in oilfield well completion industry field, realizes that oil field is normal The needs of production operation guarantee production safety and to greatest extent control stratum, usually use packer.

Currently, the generally existing sealability of domestic production packer is poor, the service life is short, hanging capacity is low, easy misunderstanding envelope, way The problems such as tight point is not easily passed through after being hampered；Import packer is expensive, delivery cycle is long and setting mistake often occurs The phenomenon that losing influences operating efficiency.

Utility model content

The utility model is to solve technical problem present in well-known technique, and the utility model provides a kind of isolation stratum It is acted on production layer, and the cable penetration packer with hanging function and anti-decapsulation functions in advance.

The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that

A kind of cable packer, including setting mechanism, locking mechanism, sealing mechanism, anchor mechanism, solution sealing mechanism；It is described Packer further include one it is anti-solve sealing mechanism and housing in advance, it is described it is anti-solve sealing mechanism in advance, the anti-solution seal structure in advance by Pawl seat, blade tooth, short tabletting, lower sheeting and long tabletting are constituted, and outer put on is provided with one group of circular groove, are set in circular groove described in every group It is equipped with the pawl seat for inlaying blade tooth, is bolted by the first tabletting group with the housing between the pawl seat, each pawl seat Both ends pass through the second tabletting group respectively and are bolted with the housing.

The pawl seat is equipped with sealing ring.

The locking mechanism is made of connector sleeve, positioning sleeve, lock ring and lock tube；Wherein lock ring is located at connector sleeve and positioning sleeve Between, design has unidirectional buttless thread section and lock ring to coincide on lock tube, and piston pushes lock tube unidirectionally to move down when setting, realizes Locking function.

The sealing mechanism is made of upper rule ring, side packing element, spacer ring, packing element and lower rule ring, it is described between packing element upper surface Spacer ring and side packing element is passed sequentially through to connect with the upper rule ring；Described packing element lower end surface passes sequentially through spacer ring and side packing element and institute State lower rule ring connection.

The anchor mechanism is made of slips cage, upper cone, slips, slips elastic slice, lower cone.

Solution sealing mechanism is made of central tube, lower cone, deblocking screw；The central tube is equipped with deblocking pin hole.

The setting mechanism is made of housing, piston, shear pin.

Outer channel, deflation valve passage and the chemical agent injection channel for putting on cable penetration.

The utility model has the advantages that

The first, the utility model is using under the action of internal pressure, and piston pushes lock tube, and lock tube pushes and advises ring, so that glue Cylinder is constantly pressurized and expands, and the slips of anchor mechanism also stretches out slips cage, and retaining mechanism can only be moved down unidirectionally, when pressure increases Slips is fully extended when being added to certain numerical value, blocks casing, packing element it is radial it is fully expanded open, casing up and down annular space completely every From.

The second, the utility model is first sheared by pin at slips, and casing is blocked in slips stretching, and then packing element is by axis It is expanded to squeezing, it is ensured that slips blocks casing completely, guarantees that suspension is reliable.

Third, the utility model can realize recycling packer by above mentioning oil pipe column according to operation needs.4th, After bringing in, if packer low pressure unusual fluctuations, pressure jump to certain numerical value, the pawl seat for solving seal structure in advance is prevented Housing is stretched out, packer is blocked, prevents production from keeping a grip on and moves up, the equipment such as downhole tool or production tree are damaged, press The pawl seat that the normal rear defence of power solves sealing mechanism in advance retracts housing.

Detailed description of the invention

Fig. 1 is a kind of cable packer construction schematic diagram of the utility model.

Fig. 2 is the utility model top view.

Fig. 3 is the utility model A-A cross-sectional view.

Appended drawing reference:

1, housing；2, piston；3, lock tube；4, connector sleeve；5, lock ring；6, positioning sleeve；7, shear pin；8, upper rule ring； 9, Side packing element；10, spacer ring；11, packing element；12, lower rule ring；13, upper cone；14, circlip；15, shear pin；16, slips cage； 17, slips；18, slips elastic slice；19, lower cone；20, pin is unsealed；21, fixing pin；22, central tube；23, "O"-ring； 24, "O"-ring；25, "O"-ring；26, "O"-ring；27, fixing pin；28, blade tooth；29, pawl seat；30, tabletting 1；31, it presses Piece 2；32, tabletting 3；33, tabletting 4；34, cable penetration channel；35, deflation valve passage；36, electric "O"-ring；37, main channel； 38, other channels；

Specific embodiment

In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing Detailed description are as follows:

As shown in Figure 1, Figure 2 and Figure 3: setting mechanism is located at packer top, by housing 1, piston 2, lock tube 3, connector sleeve 4, the components such as shear pin form.The setting mechanism, housing thereon is connected with connector sleeve 4, connector sleeve 4 and fixed 6 connection of position set, positioning sleeve 6 are connect with upper rule ring 8, constitute the mechanism that moves down of setting mechanism, and positioning sleeve 6 and upper rule ring 8, which are used, to be sheared Pin 7 is fixed；When needing setting, then suppresses, push into oil pipe by launching ball sealer into oil pipe or launching blanking plug The components such as piston and lock tube move downward, and realize setting；

The locking mechanism, lock ring 5 thereon are mounted between connector sleeve 4 and positioning sleeve 6, and design has unidirectional on lock tube Buttless thread section and lock ring 5 coincide.

The sealing structure is mounted on central tube 22, including upper rule ring 8, side packing element 9, spacer ring 10, packing element 11, under Advise 12 components of ring；Sealing mechanism is by side packing element 9 and packing element 11, the in-between each side packing element 9 in 11 two sides of packing element, each glue Spacer ring 10 is installed between cylinder, is primarily used to oil-separating layer, the effect of disrance sleeve annular space.

The anchor mechanism includes the components such as upper cone 13, slips 17, slips cage 16, lower cone 19, upper cone 13 It is connected on central tube 22 with lower cone 19 with shear pin；It is positioned for hanging tubing string and being realized in casing；

The solution sealing mechanism is located at packer lower part, by components groups such as central tube 22, lower cone 19, deblocking screws 20 At when needing deblocking packer, upper lifting pipe post shear pin realizes removing seal for packer；

Described to prevent solving sealing mechanism in advance, anti-components, the blade tooths 32 such as sealing mechanism of solving in advance is embedded in pawl seat 33, then pacifies Fixed by tabletting 30 and fastening screw 21 in the corresponding circular groove of housing 1, wherein pawl seat is equipped with sealing ring (24,25,26)； Pawl seat 33 is located at when packer low pressure exception puts on anchoring pawl stretching outside, is anchored on casing wall, prevents from pressing because of lower part Packer from opening in advance is caused when power exception, anchoring pawl is retracted into outer put on when down-hole pressure restores normal.

Utility model works process:

1, cable and other pipelines are passed through

Referring to Fig. 1, cable penetration packer is during passing through cable: having measured pre- testing cable and other pipelines first Cable and other lengths of pipeline are passed through the cable penetration channel (36) on packer housing (1) by length from bottom to top after truncation Behind other traversing pipe line channels (37), cable penetration packer is driven using top or crane is placed in well head, well head is carried out anti- Shield prevents junk from falling into well, strips cable first and needs cable outer layer mail first at sealing, and it is close that cable is passed through private cable Seal apparatus is sealed processing, is connected to the cable penetration channel (36) on housing (1), then carries out pipeline to other pipelines again Connection processing.

2, setting and deblocking process

Referring to Fig. 1, cable penetration packer, during setting: being suppressed in oil pipe and workpiece piston (2) is pushed to transport downwards It is dynamic, it pushes workpiece lock ring set (3) to move downward, first shears through the shear pin (7) of positioning sleeve (6), it is inside and outside on lock ring set (3) to have Saw-tooth thread, since saw-tooth thread zigzag is contrary on lock ring set (3) and lock ring (5), so that lock ring set (3) exists It is slipped over from lock ring (3) saw-tooth thread tooth form when moving downward, lock ring set (3) cannot retract when moving downward, and push away simultaneously Dynamic upper rule ring (8), side packing element (9), spacer ring (10), packing element (11), lower rule ring (12) upper cone (13), slips cage (16) etc. zero Part moves downward, after the shear pin (15) between upper cone (13) and slips cage (16) is cut short, upper cone (13) and slips The components such as cage (16) continue to move downward；Slips (17) does compound motion under upper cone (13) and slips cage (16) effect, It is clamped on casing wall；When continuing to think to pressurize in oil pipe, piston (3) continues to move downward compression side packing element (9), packing element (11), side packing element (9) and packing element (11) continue to expand, and realize seal pack device annular space up and down, complete packer setting.This When, which enters working condition: during vent valve is in the open state, packer is in connection state up and down, Descend pressure identical thereon, packer is only passed through anchor mechanism by oil pipe suspending weight gravity and is applied on casing so that central tube by Downward active force closes vent valve when packer low pressure exception, prevents that the anchoring device solved in sealing mechanism in advance stretches out Housing (1) blocks packer and prevents packer from moving up and causes removing seal for packer.The deblocking process of packer, needs to unseal It only needs upward mistake to propose production and keep a grip on certain tonnage when cable penetration packer to cut short between central tube (22) and lower cone (19) Deblocking pin (20) removing seal for packer can be realized.

The above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, it in the case where not departing from present inventive concept and claimed range, can also make very Shape changeable, these belong to the column of protection of the invention.

Claims (8)

1. a kind of cable packer, including setting mechanism, locking mechanism, sealing mechanism, anchor mechanism, solution sealing mechanism；Its feature Be: the packer further include one it is anti-solve sealing mechanism and housing in advance, the anti-solution sealing mechanism in advance by pawl seat, blade tooth, Short tabletting, lower sheeting and long tabletting are constituted, and outer put on is provided with one group of circular groove, are provided in circular groove described in every group and are inlayed pawl The pawl seat of tooth is bolted between the pawl seat with the housing by the first tabletting group, and each pawl seat both ends lead to respectively The second tabletting group is crossed to be bolted with the housing.

2. cable packer according to claim 1, it is characterised in that: the pawl seat is equipped with sealing ring.

3. cable packer according to claim 1, it is characterised in that: the locking mechanism is by connector sleeve, positioning sleeve, lock Ring and lock tube composition；Wherein lock ring is between connector sleeve and positioning sleeve, and design has unidirectional buttless thread section and lock ring on lock tube It coincide, piston pushes lock tube unidirectionally to move down when setting, realizes locking function.

4. cable packer according to claim 1, it is characterised in that: the sealing mechanism by upper rule ring, side packing element, every Ring, packing element and lower rule ring composition, it is described between packing element upper surface pass sequentially through spacer ring and side packing element and connect with the upper rule ring；Institute It states a packing element lower end surface and passes sequentially through spacer ring and side packing element and connect with the lower rule ring.

5. cable packer according to claim 1, it is characterised in that: the anchor mechanism is by slips cage, upper cone, card Watt, slips elastic slice, lower cone composition.

6. cable packer according to claim 1, it is characterised in that: the solution sealing mechanism is by central tube, lower cone, solution Seal screw composition；The central tube is equipped with deblocking pin hole.

7. cable packer according to claim 1, it is characterised in that: the setting mechanism is by housing, piston, shear pin Nail composition.

8. cable packer according to claim 1, it is characterised in that: the outer channel for putting on cable penetration, Deflation valve passage and chemical agent injection channel.