CN202125259U

CN202125259U - Centralizer for tubing head

Info

Publication number: CN202125259U
Application number: CN2011202612803U
Authority: CN
Inventors: 张亚胜
Original assignee: DAQING JINGTAI PETROLEUM ENGINEERING TECHNOLOGY Co Ltd
Current assignee: DAQING JINGTAI PETROLEUM ENGINEERING TECHNOLOGY Co Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-01-25
Anticipated expiration: 2021-07-22

Abstract

The utility model relates to a centralizer for a tubing head, which comprises a centralizer sleeve and a flange. The flange is arranged at the bottom of the centralizer sleeve and is integrally formed with the centralizer sleeve. The upper end of an inner cavity of the centralizer sleeve is in a funnel shape, the bore diameter of the lower end of the inner cavity is identical to the bore diameter of a well head four-way inner cavity. The flange is provided with a bolt hole corresponding to a well head flange. The centralizer for the tubing head is fixed with a well head through a nut. When installed vertically, the tubing head can be centralized through the funnel-shaped portion of the centralizer sleeve, then enters the centralizer sleeve, and finally is installed on the well head directly and vertically, thereby improving success rates of vertically installing the tubing head, resolving the problem that in original vertical installation of the tubing head, the tubing head is not centered with the well head and reducing labor strength and working capacity of maintenance personnel of oil wells. Furthermore, the centralizer for the tubing head is simple in structure, convenient to use and install and suitable for construction wells requiring the tubing head to be installed vertically.

Description

The tubing head erection device

Technical field

The utility model relates to a kind of tubing head erection device of using when sitting charge of oil tube head operation in the oilfield servicing operation process.

Background technology

In the oilfield servicing property job execution process, every mouthful of well all can have " sitting the charge of oil tube head " this procedure, owing to receive factor affecting such as derrick skew, the interior liquid buoyancy of well; Through regular meeting occur tubing head repeatedly all with the well head four-way to the situation in not; Sometimes cause the damage of tubing head O-ring seal, if decentralized wellhead, can make then that the pin thread anti-shearing force reduces on first oil pipe that tubing head connects; Cause easily the oil pipe break-off accident in manufacturing process in the future, occurring, have certain potential risk.

Summary of the invention

The goal of the invention of the utility model is a kind of tubing head erection device to be provided to the problems referred to above, solves to exist tubing head and well head four-way to the problem in not when charge of oil tube head operation is sat in the oilfield servicing operation.

The utility model is realized through following technical scheme: the tubing head erection device be by set upright sleeve pipe, flange constitutes; Flange is positioned at sets upright sleeve bottom; And with to set upright sleeve pipe one-body molded; Wherein, described supporting positive cover tube cavity upper end is infundibulate, and the inner chamber lower end is identical with well head four-way inner chamber aperture; Have the bolt hole corresponding on the described flange with wellhead flange.

Adopt the good effect of technique scheme: the utility model is fixed through nut and well head, and when seat charge of oil tube head, tubing head can setting upright through the infundibulate position of setting upright sleeve pipe; Sleeve pipe is set upright in entering; And then directly sit and install to well head, promoted the success rate of sitting the charge of oil tube head, occurred when having solved former seat charge of oil tube head with well head to the problem in not; Reduce well maintenance personnel's labour intensity, reduced workload; In addition, the utility model is simple in structure, and is easy to install and use, is applicable to the construction well that needs to sit the charge of oil tube head.

Four, description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the utility model user mode.

Among the figure: 1 sets upright sleeve pipe, 2 flange, 3 well heads, 4 tubing heads, 5 wellhead flanges, 6 bolts hole, 7 bolts.

Five, the specific embodiment: the utility model is described further below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of the utility model; Fig. 2 is the structural representation of the utility model user mode; In conjunction with Fig. 1, shown in Figure 2; The tubing head erection device by set upright sleeve pipe 1, flange 2 two parts constitute, and set upright sleeve pipe 1, flange 2 two parts are one-body molded, flange 2 is positioned at the bottom of setting upright sleeve pipe 1.Set upright sleeve pipe 1 inner chamber upper end and be infundibulate, the aperture of inner chamber lower end is identical with the aperture of well head 3 inner chambers, helps the seat dress of tubing head 4.Have the bolt hole 6 corresponding on the flange 2, be convenient to directly directly fix with wellhead flange 5 through bolt 7 with wellhead flange 5.

During use, through nut the utility model and well head are fixed earlier, when needing to sit the charge of oil tube head, tubing head is sat along the infundibulate position of setting upright sleeve pipe installed to well head again.Through setting upright of the utility model, realized the disposable direct seat dress of tubing head, promoted the success rate of sitting charge of oil tube head operation, reduced well maintenance personnel's labour intensity, saved the time of safeguarding oil well.

Claims

1. tubing head erection device; It is characterized in that: this device is by setting upright sleeve pipe (1), flange (2) formation; Flange (2) is positioned at sets upright sleeve pipe (1) bottom, and with to set upright sleeve pipe (1) one-body molded, wherein; Described sleeve pipe (1) the inner chamber upper end of setting upright is infundibulate, and the inner chamber lower end is identical with well head inner chamber aperture; Have the bolt hole (6) corresponding on the described flange (2) with wellhead flange (5).