CN201554410U

CN201554410U - Multifunctional anti-theft oil production well head assembly

Info

Publication number: CN201554410U
Application number: CN200920280638XU
Authority: CN
Inventors: 胡一华; 孙玉文; 王刚; 闵辉; 李永华
Original assignee: 胡一华
Priority date: 2009-12-06
Filing date: 2009-12-06
Publication date: 2010-08-18
Anticipated expiration: 2019-12-06

Abstract

The utility model relates to a multifunctional anti-theft oil production well head assembly, wherein external threads at the upper part of an oil string is connected with internal threads at the upper part of a four-way cover, the upper part of a large four-way unit is installed with an oil jacket self-seal, the upper part of the oil jacket self-seal is provided with a pressing ring, a top thread is pressed on the pressing ring, the oil string penetrates through the oil jacket self-seal to be arranged in a sleeve, the contact surface of the outer wall of the oil jacket self-seal and the inner wall of the large four-way unit is sealed, and the inner wall of the oil jacket self-seal is contacted and sealed with the outer wall of the oil string. Every part on the oil production well head assembly needs to bear the weight of the oil string, and a thief can not take away any part thereof, thus playing an anti-theft role, and avoiding various economic losses as the well head assembly is stolen; a pressure partition system in the oil string and a pressure system in the sleeve are reliably separated, and the oil well can not leak oil at the well head, thus having long production time and high output; and when the well is washed at a sleeve valve, leakage can not occur at the top thread under the action of the oil jacket self-seal, thus reducing environmental pollution; therefore, the multifunctional anti-theft oil production well head assembly can achieve the design aim, has multifunctional actions, and can create great economic benefits.

Description

The multifunctional burglary-resistant wellhead for production

Technical field:

The utility model belongs to the oil field pumping well wellhead equipment, particularly a kind of multifunctional burglary-resistant wellhead for production.

Background technology:

In the oil pumping of oil field, need wellhead for production be installed at well head and could control oil well production, the weight of flow string is suspended on the big four in the present wellhead for production, the above device of big four does not have weight to hang, stealing molecule is easy to steal after general tool is dismantled it, except losing the wellhead equipment loss, cause easily that also well head is out of control, the crude oil overflow that extraction comes is also encouraged stolen molecule and is stolen on ground, produce serious environmental simultaneously and pollute, after wellhead equipment is stolen, cause easily that also well head is out of control, blowout taking place, serious accident takes place, causes heavy economic losses.The weight of flow string is suspended on big four and is taken in the hanger sealing ring when damaging, and flowline and oil well casing UNICOM cause that oil well is not fuel-displaced, need advance to give birth to maintenance to oil well and just can resume production, and this can cause also very that large economy loses.

Summary of the invention:

The purpose of this utility model provides a kind of multifunctional burglary-resistant wellhead for production, prevents to steal molecule and dismantles wellhead assembly, avoids the various economic losses that cause because of wellhead assembly is stolen.

The purpose of this utility model has been achieved in that the four-way lid, last set bolt group, big four, tubing string, following set bolt group, the sleeve pipe adpting flange, sleeve pipe, jackscrew, the four-way lid is fixed on the big four by last set bolt group, big four is fixed on the sleeve pipe adpting flange by following set bolt group, sleeve pipe top is threaded with the sleeve pipe adpting flange, jackscrew is installed in the top wire hole of big four side, the tubing string upper external thread covers portion's internal thread with four-way and is connected, it is self-styled that oil jacket is installed on big four top, trim ring is arranged at the self-styled top of oil jacket, oil jacket is proclaimed oneself nonmetal, trim ring is a metal, jackscrew front end tapering is pressed on the outer conical surface of trim ring, tubing string passes that oil jacket is self-styled to be in the sleeve pipe, self-styled outer wall of oil jacket and the sealing of big four inwall contact surface, self-styled inwall of oil jacket and the contact seal of tubing string outer wall.

Self-styled outer wall of oil jacket and big four inwall contact surface are taper surface, and upper end diameter is big, and lower end diameter is little.

The beneficial effects of the utility model are: each parts on the wellhead for production all will bear the weight of tubing string, then several tons in light weight of tubing string, heavy then tens of ton, thief can't be taken any one parts away, thereby play antitheft effect, the stolen various economic losses that cause of wellhead assembly have been avoided, simultaneously, the pressure system of pressure in system and sleeve pipe in the tubing string reliably separated, the high pressure in the tubing string can blowby to big four, oil well can be in the well head leakage of oil, production time is long, and the output height is during from the sleeve valve well-flushing, can be under the oil jacket self-tightening from the jackscrew seepage, can reduce environment pollution, therefore, the utility model can reach purpose of design, have multi-function action, can create substantial economics.

Description of drawings:

Figure is the assembling drawing of the utility model embodiment.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model embodiment is described.

As shown in the figure, by four-way lid 1, last set bolt group 2, trim ring 3, oil jacket self-styled 4, big four 5, tubing string 6, following set bolt group 7, sleeve pipe adpting flange 8, sleeve pipe 9, jackscrew 10 is formed, four-way lid 1 is fixed on the big four 5 by last set bolt group 2, big four 5 is fixed on the sleeve pipe adpting flange 8 by following set bolt group 7, sleeve pipe 9 tops are threaded with sleeve pipe adpting flange 8, jackscrew 10 is installed in the big four 5 side top wire holes, tubing string 6 upper external thread are covered 1 upper internal threaded with four-way and are connected, oil jacket self-styled 4 is installed on big four 5 tops, self-styled 4 outer walls of oil jacket and big four 5 inwall contact surfaces are taper surface, upper end diameter is big, lower end diameter is little, and oil jacket self-styled 4 can be to the whereabouts.Trim ring 3 is arranged at self-styled 4 tops of oil jacket, and oil jacket self-styled 4 is nonmetal, and trim ring 3 is a metal, and jackscrew 10 front end taperings are pressed on the outer conical surface of trim ring 3, avoids being pressed in causing damage on nonmetal.Tubing string 6 passes oil jacket self-styled 4 and is in the sleeve pipe 9, self-styled 4 outer walls of oil jacket and the sealing of big four 5 inwall contact surfaces, self-styled 4 inwalls of oil jacket and tubing string 6 outer wall contact seals.

Oil jacket self-styled 4 separates sleeve pipe 9 and top wire hole on the big four 5, and during well-flushing, the top wire hole on the big four 5 can seepage in sleeve pipe for oil well.

Change common gland into after four-way lid 1 taken away, the utility model can remove oil pipe, bore plug, sand washing operation, thereby switches the problem that tubing string, seat are hung complex operations such as boll-weevil hanger can avoid blowout takes place the time.Therefore, the utlity model has multi-function action.

Claims

1. multifunctional burglary-resistant wellhead for production, four-way lid (1) is arranged, last set bolt group (2), big four (5), tubing string (6), following set bolt group (7), sleeve pipe adpting flange (8), sleeve pipe (9), jackscrew (10), four-way lid (1) is fixed on the big four (5) by last set bolt group (2), big four (5) is fixed on the sleeve pipe adpting flange (8) by following set bolt group (7), sleeve pipe (9) top is threaded with sleeve pipe adpting flange (8), jackscrew (10) is installed in the top wire hole of big four (5) side, it is characterized in that: tubing string (6) upper external thread is connected with four-way lid (1) upper internal threaded, oil jacket self-styled (4) is installed on big four (5) top, trim ring (3) is arranged at oil jacket self-styled (4) top, oil jacket self-styled (4) is nonmetal, trim ring (3) is a metal, jackscrew (10) front end tapering is pressed on the outer conical surface of trim ring (3), tubing string (6) passes oil jacket self-styled (4) and is in the sleeve pipe (9), self-styled (4) outer wall of oil jacket and the sealing of big four (5) inwall contact surface, self-styled (4) inwall of oil jacket and tubing string (6) outer wall contact seal.

2. multifunctional burglary-resistant wellhead for production according to claim 1 is characterized in that: self-styled (4) outer wall of oil jacket and big four (5) inwall contact surface are taper surface, and upper end diameter is big, and lower end diameter is little.