CN217151890U

CN217151890U - Blowout prevention and anti-theft protection device for oil well head

Info

Publication number: CN217151890U
Application number: CN202221121670.5U
Authority: CN
Inventors: 孙支林; 苟江; 宋保国; 孙丽慧; 李峰
Original assignee: Wuzhong Tonghui Machinery Manufacturing Co ltd
Current assignee: Wuzhong Tonghui Machinery Manufacturing Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-09
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to a prevent spouting anti-theft protection device for oil well head, it is including settling in the end cap of oil field well head and the sleeve pipe that is used for locking the end cap, the end cap comprises disk seat, swivel sleeve and pressure release cover, be equipped with the vertical operation chamber that link up on the axis of disk seat, but install vertical gliding taper valve screw in the operation chamber, but taper valve screw inner chamber is equipped with the nylon and prevents spouting the valve, but swivel sleeve adaptation cover inlays on the disk seat, and swivel sleeve lateral wall symmetry is equipped with left and right dismouting handle hole, is provided with the retaining member that link up the swivel sleeve lateral wall on the dismouting handle hole, the disk seat outer wall still is equipped with the jack that corresponds the matching with the dismouting handle hole, is equipped with little magnet on the jack, still is equipped with the escape orifice on the swivel sleeve, is equipped with the pressure release through-hole that corresponds the matching with the escape orifice on the disk seat. The utility model has reliable anti-disassembly and anti-theft functions, and can not be opened without a special tool; the quick assembly and disassembly are convenient when the production is recovered and the oil field is closed.

Description

Blowout prevention and anti-theft protection device for oil well head

Technical Field

The utility model relates to a production well corollary equipment technical field especially relates to a prevent spouting anti-theft protection device for oil bailing well head.

Background

After the oil field is mined for a long time, low-yield and low-efficiency oil wells are increased year by year, and the yield of the oil wells in some low-yield areas is only hundreds of kilograms. To develop such wells more efficiently, production is typically done by oil recovery using bailing. In order to prevent oil in the oil well from being stolen, after the oil fishing is finished every time, the wellhead of the oil fishing well needs to be sealed by an anti-theft device so as to prevent lawless persons from obtaining the oil from the wellhead of the oil fishing well. At present, the wellhead anti-theft device of the oil well mainly comprises a non-standard special connecting bolt type, a password type, a multifunctional full-closed type and the like. The connecting bolt of the special connecting bolt type anti-theft wellhead device is exposed outside, and a corresponding opening wrench can be developed by observing the appearance, so that the anti-theft grade is low; the password type anti-theft wellhead device has the risk that the password is invalid or is easy to damage so as to cause incapability of opening; the multifunctional full-closed type has complete functions, but has complex structure and high price.

In addition, before recovering oil field production or fishing oil, pressure relief needs to be carried out on the closed well sealing device to ensure safe operation in the construction process. Still need demolish the shut-in well device simultaneously to oil to in the oil well is exploited, dismantle troublesome still can influence production efficiency if the structure is complicated. Therefore, it is necessary to produce a blowout-preventing and theft-preventing protection device of the oil well head, which has the functions of theft prevention and pressure relief, is low in cost and can be quickly disassembled and assembled.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technical problem and provide a prevent spouting anti-theft protection device for oil bailing well head.

In order to achieve the purpose, the utility model adopts the technical proposal as follows:

a blowout-preventing and anti-theft protection device for an oil well head comprises a plug arranged on the oil well head and a sleeve for locking the plug, wherein the plug consists of a valve seat, a rotary sleeve and a pressure relief sleeve, a vertically through operation cavity is arranged on the axis of the valve seat, a cone valve nut capable of vertically sliding is installed in the operation cavity, a nylon blowout-preventing valve is assembled in the inner cavity of the cone valve nut, the rotary sleeve is fittingly sleeved on the valve seat, left and right disassembly and assembly operation holes are symmetrically formed in the side wall of the rotary sleeve, a locking piece penetrating through the side wall of the rotary sleeve is arranged on the disassembly and assembly operation hole, a jack correspondingly matched with the disassembly and assembly operation hole is further formed in the outer wall of the valve seat, a small magnet is assembled on the jack, a discharge port is further formed in the rotary sleeve, and a pressure relief through hole correspondingly matched with the discharge port is formed in the valve seat;

the pressure release cover is suitable for the cover to inlay in the top of disk seat and be located the swivel mount cover top, and the top of pressure release cover is provided with the manometer mounting hole that feeds through the operation chamber, and pressure release cover lateral wall symmetry is equipped with left and right pressure release hole, is provided with the retaining member that feeds through pressure release cover lateral wall on the pressure release hole, the disk seat outer wall still is equipped with the jack that corresponds the matching with the pressure release hole, is equipped with little magnet on the jack, the lateral wall of disk seat is thread design, the sleeve pipe is the internal thread sleeve pipe of rigid coupling in the oil field well head, but disk seat adaptation and cover pipe thread are linked.

Further, still include the manometer, the downthehole dress of manometer mounting hole has inlayed the manometer seat, the manometer seat is installed in the manometer mounting hole to can 360 rotations through the slip steel ball that sets up in manometer mounting hole inner wall, the manometer can be linked with manometer seat screw thread, and the pressure release is sheathe in and still is provided with and is used for locking manometer seat pivoted gauge stand fixed orifices.

Furthermore, a pressure gauge switch for controlling the pressure gauge is arranged between the bottom of the pressure gauge and the cone valve nut.

Further, retaining member on the swivel sleeve comprises the big magnet lock sleeve that encircles the dismouting handle hole and the first powerful magnet of parcel, retaining member on the pressure release cover comprises the little magnet lock sleeve that encircles the pressure release hole and the second powerful magnet of parcel.

Furthermore, the locking piece of the pressure relief hole controls the vertical sliding of the cone valve nut through the lead screw.

Furthermore, an L-shaped pipe is sleeved on the drain port, and the opening of the free end of the L-shaped pipe faces downwards.

Further, the inner diameter of the excretory orifice is 2 inches.

Furthermore, a sealing cavity larger than the operation cavity is reserved at the bottom of the valve seat, and a stainless steel sealing seat is arranged on the contact surface of the side wall of the sealing cavity and the cone valve nut.

Further, the outer wall of the casing is in sealing connection with the oil field wellhead.

Further, magnetic tool connects U type pole by the handle and constitutes, and the both ends of U type pole are equipped with the third powerful magnet of mobile regulation, and third powerful magnet sets up relatively, and third powerful magnet passes through the hand wheel and can control the regulation, third powerful magnet matches with the retaining member.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model has reliable anti-disassembly and anti-theft functions, and can not be opened without a special tool;

2. the utility model is beneficial to fast assembling and installing the pressure gauge, shortens the operation time and improves the working efficiency;

3. the utility model can rapidly judge the pressure value in the oil field through the pressure gauge, and can safely evacuate and relieve the pressure by adjusting the displacement, thereby ensuring the safe operation and avoiding accidents;

4. the utility model discloses be convenient for install fast and dismantle when resumeing production and sealing the oil field, the efficiency of construction improves greatly.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a schematic plan view of the present invention;

fig. 3 is a schematic three-dimensional structure of the present invention;

FIG. 4 is a schematic structural view of a magnetic tool;

the attached drawings are as follows: 1-valve seat, 2-rotary sleeve, 3-pressure relief sleeve, 4-cone valve nut, 5-nylon blowout prevention valve, 6-disassembly and assembly operation hole, 7-small magnet, 8-drainage port, 9-pressure relief hole, 10-pressure gauge seat, 11-sliding steel ball, 12-gauge seat fixing hole, 13-pressure gauge switch, 14-large magnet locking sleeve, 15-first strong magnet, 16-small magnet locking sleeve, 17-second strong magnet, 18-lead screw, 19-stainless steel sealing seat, 20-pressure gauge, 21-L-shaped pipe, 22-magnetic tool, 23-handle, 24-U-shaped rod, 25-third strong magnet and 26-hand wheel.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example one

As shown in fig. 1, 2, 3 and 4, the utility model discloses a blowout prevention anti-theft protection device for oil well head, which comprises a plug arranged on the oil well head and a sleeve for locking the plug, the plug consists of a valve seat 1, a rotary sleeve 2 and a pressure relief sleeve 3, a vertically through operating cavity is arranged on the axis of the valve seat 1, a cone valve nut 4 capable of vertically sliding is arranged in the operating cavity, a nylon blowout prevention valve 5 is assembled in the inner cavity of the cone valve nut 4, the rotary sleeve 2 can be fittingly sleeved on the valve seat 1, the side wall of the rotary sleeve 2 is symmetrically provided with a left disassembly operation hole 6 and a right disassembly operation hole 6, the disassembly operation holes 6 are provided with locking pieces which run through the side wall of the rotary sleeve 2, the outer wall of the valve seat 1 is also provided with a jack matched with the dismounting operation hole 6 correspondingly, the jack is provided with a small magnet 7, the rotary sleeve 2 is also provided with a discharge hole 8, and the valve seat 1 is provided with a pressure relief through hole matched with the discharge hole 8 correspondingly.

Pressure release cover 3 adaptation covers and inlays in disk seat 1's top and be located 2 tops of rotary sleeve, and the top of pressure release cover 3 is provided with the manometer mounting hole that feeds through the operation chamber, and 3 lateral wall symmetries of pressure release cover are equipped with left and right pressure release hole 9, are provided with the retaining member that runs through 3 lateral walls of pressure release cover on the

pressure release hole

9, 1 outer wall of disk seat still is equipped with the jack that corresponds the matching with pressure release hole 9, is equipped with little magnet 7 on the jack, the lateral wall of disk seat 1 is the screw thread design, the sleeve pipe is the internal thread sleeve pipe of rigid coupling in the oil field well head, but 1 adaptation of disk seat and sleeve pipe thread are linked.

Still include manometer 20, manometer seat 10 has been inlayed to the manometer mounting hole, manometer seat 10 is installed in the manometer mounting hole to through setting up in the slip steel ball 11 of manometer mounting hole inner wall can 360 rotations, manometer 20 can be with manometer seat 10 threaded connection, still is provided with on the pressure release cover 3 and is used for locking manometer seat 10 pivoted gauge stand fixed orifices 12. The pressure gauge base 10 is provided with a cross-shaped groove corresponding to the gauge base fixing hole 12, and a cross-shaped screwdriver is inserted into the gauge base fixing hole 12 and abuts against the cross-shaped groove. At this time, the pressure gauge seat 10 and the pressure relief sleeve 3 are locked relatively, and the pressure gauge 20 is inserted into the pressure gauge mounting hole and is fixed in a rotating mode. After the phillips screwdriver is removed, the pressure gauge 20 can be rotated 360 ° and cannot be removed.

And a pressure gauge switch 13 for controlling the pressure gauge 20 is arranged between the bottom of the pressure gauge 20 and the cone valve nut 4. And (3) opening a pressure gauge switch 13, communicating a bottom pressure gauge fixed rod of the pressure gauge 20 with the operation cavity, and acquiring the numerical value of the gas pressure in the oil field wellhead through pressure sensing of the pressure gauge fixed rod. Because the blowout prevention valve core is installed and the pressure gauge switch 13 is additionally arranged, the pressure gauge 20 can be installed and disassembled at any time.

The retaining member on the rotary sleeve 2 comprises a large magnet locking sleeve 14 surrounding the dismounting operation hole 6 and a first strong magnet 15 wrapped, and the retaining member on the pressure relief sleeve 3 comprises a small magnet locking sleeve 16 surrounding the pressure relief hole 9 and a second strong magnet 17 wrapped.

The locking piece of the pressure relief hole 9 controls the vertical sliding of the cone valve nut 4 through the lead screw 18. The screw 18 opens the cone valve nut 4, and like the valve principle, the magnetic tool 22 is used for rotating the pressure relief sleeve 3, the second strong magnet 17 and the small magnet 7 are matched and locked, the pressure relief sleeve 3 and the opening screw 18 rotate together, and the cone valve nut 4 is driven to move up and down, so that the opening/closing operation of the drain opening 8 is controlled.

An L-shaped pipe 21 is sleeved on the drain opening 8, and the free end opening of the L-shaped pipe 21 faces downwards.

The inner diameter of the excretory orifice 8 is 2 inches.

A sealing cavity larger than the operation cavity is reserved at the bottom of the valve seat 1, and a stainless steel sealing seat 19 is arranged on the contact surface of the side wall of the sealing cavity and the cone valve nut 4. The stainless steel sealing seat 19 ensures the tightness of the cone valve nut 4 when closing the operation cavity.

The outer wall of the casing is connected with the oil field well mouth in a sealing mode. The casing is fixed at the wellhead of the oil field, the joint of the wellhead of the oil field and the casing is sealed according to the size of the casing, and then the valve seat 1 is connected to the casing in a threaded mode through the magnetic tool 22.

Still including being used for rotating the magnetic tool 22 of operation swivel sleeve 2 and pressure release cover 3, magnetic tool 22 connects U type pole 24 by handle 23 and constitutes, and the both ends of U type pole 24 are equipped with the third powerful magnet 25 of mobile regulation, and third powerful magnet 25 sets up relatively, and third powerful magnet 25 passes through hand wheel 26 and can control the regulation, third powerful magnet 25 matches with the retaining member. The distance between the third strong magnets 25 is adjusted through the knob hand wheel 26, so that the third strong magnets can be fixed on the rotary sleeve 2 or the pressure relief sleeve 3 to complete the rotation operation. The magnetic tools 22 may be arranged in several ways according to the user's requirements and according to the magnetic pole direction. As long as the magnetic tool 22 is not lost, the magnetic tool is not reproducible on site, and is simple, reliable and not easy to damage.

Example two

On the basis of the first embodiment, the embodiment provides a specific implementation process of an anti-blowout and anti-theft protection device for a fishing wellhead.

The specific implementation principle flow is as follows:

and (3) mounting and dismounting: firstly, a magnetic tool is aligned to the left and right disassembly operation holes, and the rotating sleeve and the valve seat are locked instantly by locking the magnet sleeve under the action of a strong magnet, so that the rotating sleeve and the valve seat are integrated. Then the rotating sleeve is rotated by the aid of the force applying rod to start installation until the rotating sleeve and the valve seat are locked relatively and cannot rotate. Then the stress application rod is removed, the rotating sleeve is rotated left and right by hand to separate the locking part from the valve seat, thus the rotating sleeve rotates freely and the valve seat is still, thus playing the function of anti-disassembly. To be removed, a magnetic tool must be used for the removal.

Emptying and pressure relief: firstly, the same special magnetic tool is aligned to a pressure relief hole in the pressure relief sleeve, and the locking piece instantly locks the pressure relief sleeve and the emptying pressure relief screw rod under the action of a strong magnet to form a whole. Then anticlockwise rotation, lead screw rotation, the drive cone valve screw begins the downward movement to the discharge capacity size at the regulation drain outlet. The pressure can be discharged until the rotation is still, and the pressure is released. The valve is closed by clockwise rotation, the special magnetic tool is taken out, the valve is rotated left and right to separate the locking piece, the pressure relief sleeve and the cone valve nut are separated, and the pressure relief sleeve can be rotated randomly without adjusting the discharge capacity.

Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and that such changes and modifications are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a prevent spouting anti-theft protection device for bailing well head which characterized in that: the plug comprises a plug arranged at an oil field well mouth and a sleeve for locking the plug, wherein the plug consists of a valve seat, a rotary sleeve and a pressure relief sleeve, a vertically through operation cavity is arranged on the axis of the valve seat, a cone valve screw capable of vertically sliding is arranged in the operation cavity, a nylon blowout prevention valve is assembled in the inner cavity of the cone valve screw, the rotary sleeve is fittingly sleeved on the valve seat, the side wall of the rotary sleeve is symmetrically provided with a left disassembly and assembly operation hole and a right disassembly and assembly operation hole, a locking part penetrating through the side wall of the rotary sleeve is arranged on the disassembly and assembly operation hole, the outer wall of the valve seat is also provided with a jack correspondingly matched with the disassembly and assembly operation hole, a small magnet is assembled on the jack, a drain outlet is also arranged on the rotary sleeve, and a pressure relief through hole correspondingly matched with the drain outlet is arranged on the valve seat;

2. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: still include the manometer, the manometer seat has been inlayed to the manometer mounting hole, the manometer seat is installed in the manometer mounting hole to can 360 rotate through the slip steel ball that sets up in manometer mounting hole inner wall, the manometer can be linked with manometer seat screw thread, and the pressure release is sheathe in and still is provided with and is used for locking manometer seat pivoted gauge stand fixed orifices.

3. A blowout prevention and theft prevention protection device for a fishing wellhead according to claim 2, characterized in that: and a pressure gauge switch for controlling the pressure gauge is arranged between the bottom of the pressure gauge and the cone valve nut.

4. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: the retaining member on the rotating sleeve comprises a large magnet locking sleeve surrounding the dismounting operation hole and a first strong magnet wrapped by the large magnet locking sleeve, and the retaining member on the pressure relief sleeve comprises a small magnet locking sleeve surrounding the pressure relief hole and a second strong magnet wrapped by the small magnet locking sleeve.

5. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: and the locking piece of the pressure relief hole controls the vertical sliding of a screw nut of the cone valve through a lead screw.

6. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: an L-shaped pipe is sleeved on the drain port, and the opening of the free end of the L-shaped pipe faces downwards.

7. An anti-blowout and anti-theft protection device for a fishing wellhead according to claim 6, characterized in that: the inner diameter of the excretory orifice is 2 inches.

8. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: a sealing cavity larger than the operation cavity is reserved at the bottom of the valve seat, and a stainless steel sealing seat is arranged on the contact surface of the side wall of the sealing cavity and the cone valve nut.

9. A blowout prevention anti-theft protection device for a fishing wellhead according to claim 1, characterized in that: the outer wall of the casing is connected with the oil field well mouth in a sealing mode.

10. A magnetic tool for rotationally operating a rotating sleeve and a pressure relief sleeve, characterized in that: magnetic tool connects U type pole by the handle and constitutes, and the both ends of U type pole are equipped with the third powerful magnet of mobile regulation, and third powerful magnet sets up relatively, and third powerful magnet passes through the hand wheel and can control the regulation, third powerful magnet matches with the retaining member.