CN201027516Y

CN201027516Y - Screw pump wellhead device

Info

Publication number: CN201027516Y
Application number: CNU200720012136XU
Authority: CN
Inventors: 廉军; 赵春昶; 张大千; 许建国; 黄辉
Original assignee: LIAN JUN ZHAO CHUNCHANG ZHANG DAQIAN XU JIANGUO HUANG HUI; LIAN JUN ZHAO CHUNCHANG ZHANG
Current assignee: LIAN JUN ZHAO CHUNCHANG ZHANG DAQIAN XU JIANGUO HUANG HUI; LIAN JUN ZHAO CHUNCHANG ZHANG
Priority date: 2007-05-17
Filing date: 2007-05-17
Publication date: 2008-02-27
Anticipated expiration: 2017-05-17

Abstract

The utility model provides a screw pump wellhead device for pressure control, opening and closing of the screw pump well and the wellhead operation under well. The utility model solves the problems that the prior screw pump oil extraction wellhead can not satisfy all the requirements of the oil extraction of screw pump and a special fracturing wellhead must be used in fracturing. The utility model consists of a body and an oil outlet channel, wherein, a flange is arranged on a bushing, a hanger is arranged in the bushing, the hanger is fixed on the flange by a screw, the top of the screw is provided with a cap, a blocking ring and a rubber cushion are arranged between the screw and the flange, a lateral pipe is fixed on the bushing communicated with the lateral pipe, and one end of the lateral pipe is provided with a theftproof valve which is connected with a welded splice by a lathe dog. With the advantages of small volume, compact structure, light weight and convenient manipulation, the utility model can directly fracture without the need to change the wellhead when fracturing.

Description

Screw pump well head device

Technical field:

The utility model relates to the wellhead assembly in the oil recovery field, oil field, is a kind of pressure control that is used for screw bolt well specifically, the device that carries out the well head operation when open and close and underground work.

Background technology:

The screw pump oil production well head can not satisfy the requirement of whole screw pump oil productions in the past.Behind the last well well head and pump head connection angle differ to, will change special-purpose fracture well head during pressure break could pressure break.

Summary of the invention:

In order to solve the problem of above-mentioned existence, the screw pump well head device that the utility model provides a kind of satisfies the pressure break needs, have anti-theft feature and can dock with circulator; Goal of the invention of the present utility model is achieved through the following technical solutions: screw pump well head device, partly constitute by body and oil discharge passage, described screw pump well head device body structure is: mounting flange on sleeve pipe, hanger is installed in the sleeve pipe, jackscrew is fixed on hanger on the flange, end at jackscrew is provided with pressure cap, be provided with baffle ring and rubber cushion between jackscrew and the flange, transverse tube is fixed on the sleeve pipe, transverse tube communicates with sleeve pipe, end at transverse tube is equipped with valve for guarding against theft, and the valve for guarding against theft two ends are clamp connection, and clip and plug are housed on the other end transverse tube; The oil discharge passage part-structure is: needle valve is connected with the short circuit oil pipe by the needle valve joint, on the short circuit oil pipe valve for guarding against theft is housed, valve for guarding against theft and welding point clamp connection.

The beneficial effects of the utility model: the utility model adopts said structure, and transverse tube and flange bolt connect into certain angle, when being connected with the screw pump pump head angle one to; Flange adopts standard 250 flanges, need not change well head during pressure break and get final product direct pressure break, and can directly dock with circulator; Hanger adopts the standard hanger, and suspended load is big, and interchangeability is good; Hanger adopts the fixing mode of jackscrew, prevents jet pipe; Oil recovery valve one end is clamp connection, directly is connected with pump head during oil recovery, and the other end is that welding point connects, the direct and flow line welding of welding point; Sleeve pipe one side mounting sleeve valve uses during as operation, and opposite side connects for the clip plug, as standby end; Valve all adopts valve for guarding against theft, has only with special spanner and just can open, and plays antitheft effect.The utlity model has that volume is little, in light weight, compact conformation, easy to operate advantage, significantly reduced working strength of workers.

Description of drawings:

Fig. 1 is a screw pump well head device body structural representation;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is a screw pump well head device oil discharge passage structural representation;

Fig. 4 is the sectional view of clamp connection part;

The specific embodiment:

Screw pump well head device, partly constitute by screw pump well head device body and oil discharge passage, body comprises flange 1, hanger 2, jackscrew 3, rubber cushion 4, baffle ring 5, pressure cap 6, sleeve pipe 7, transverse tube 8, valve for guarding against theft 21, at sleeve pipe 7 top mounting flanges 1, screw-type cover pipe thread 26 is made in sleeve pipe 7 ends, hanger 2 is installed in the sleeve pipe 7, with jackscrew 3 hanger 2 is fixed in the flange 1, in the end of jackscrew 2 pressure cap 6 is housed, be provided with baffle ring 5 and rubber cushion 4 between jackscrew 3 and the flange 1, transverse tube 8 is fixed on the sleeve pipe 7, and communicate with sleeve pipe 7, be shaped on clip head 10 in transverse tube 8 ends, plug 12 is screwed on the clip head 10, steel ring 11 is installed in the middle of two clip heads 10, and is fixing with clip 9, valve for guarding against theft 21 is housed, valve for guarding against theft 21 two ends clip 22 on transverse tube 8,23 is fixing; Oil discharge passage comprises short circuit oil pipe 13, needle valve 14, valve for guarding against theft 16, be provided with clip 27 in short circuit oil pipe 13 ends, needle valve 14 is connected with short circuit oil pipe 13 by needle valve joint 15, valve for guarding against theft 16 is housed on short circuit oil pipe 13, valve for guarding against theft 16 two ends are fixing with

clip

24,25, be shaped on welding point 17 in short circuit oil pipe end, big steel ring 18, bolt assembly 19 cooperate the installation of flange 1, and antitheft spanner 20 uses with valve for guarding against

theft

16,21.

Operating principle of the present utility model: after the completion this wellhead assembly body is directly linked to each other with casing coupling, the jackscrew rotation is retreated to flange inside, take off hanger, after having treated down oil pipe, hanger is linked to each other with oil pipe, stubborn jackscrew compresses hanger, pump head is docked with bolt with wellhead flange, seal with steel ring during butt joint, after the butt joint oil discharge passage part is connected with pump head, pipeline directly is welded on the welding point.

During pressure break, need not change fracture well head, directly use screw pump well head device, the pressure break flange is docked with bolt with screw pump well head flange, the pressure break bend pipe is directly linked and is got final product pressure break on the hanger.

When docking, directly circulator is docked with wellhead flange and get final product with circulator.

Claims

1. screw pump well head device, it is characterized in that: partly constitute by body and oil discharge passage, described screw pump well head device body structure is: mounting flange on sleeve pipe, hanger is installed in the sleeve pipe, jackscrew is fixed on hanger on the flange, end at jackscrew is provided with pressure cap, be provided with baffle ring and rubber cushion between jackscrew and the flange, transverse tube is fixed on the sleeve pipe, transverse tube communicates with sleeve pipe, end at transverse tube is equipped with valve for guarding against theft, and the valve for guarding against theft two ends are clamp connection, and clip and plug are housed on the other end transverse tube; The oil discharge passage part-structure is: needle valve is connected with the short circuit oil pipe by the needle valve joint, on the short circuit oil pipe valve for guarding against theft is housed, valve for guarding against theft and welding point clamp connection.