CN209892143U

CN209892143U - Well head protection device for oil and gas field development

Info

Publication number: CN209892143U
Application number: CN201920421836.7U
Authority: CN
Inventors: 张文强; 成育红; 陈增辉; 丁雪樵; 张洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2020-01-03
Anticipated expiration: 2029-03-30

Abstract

The utility model relates to a well head protection device for developing oil and gas fields, which comprises a disc seat, wherein a lock sleeve is welded at the middle position of the disc seat, a reinforcing rib is welded at the outer side of the lock sleeve in an annular manner, the bottom of the reinforcing rib is welded and fixed with the disc seat, four fixed screw sleeves are arranged at the outer side of the disc seat in an annular manner, the bottom ends of the fixed screw sleeves are fixedly welded on the disc seat, bolts capable of adjusting the height are screwed in the fixed screw sleeves, a limit top ring is arranged above the lock sleeve, the utility model is convenient for protecting a well head device, so that the radial load and the tensile load of equipment and the pressure load in a well are all promoted, the device is not easy to deform, the passing of downhole tools is ensured, the height of a limit necklace can be adjusted according to the requirements of the equipment such as a sleeve pipe and the like, the adaptability is larger, and a protective plug cover seals the lock sleeve, and impurities are prevented from entering the wellhead.

Description

Well head protection device for oil and gas field development

Technical Field

The utility model relates to an oil gas production technical field, concretely relates to well head protection device of oil gas field development usefulness.

Background

In oil and gas drilling, it is common to install at the wellhead a device for controlling the pressure and direction of gas and liquid (oil, water, etc.) fluids, for suspending casing, tubing, and for sealing the tubing from the casing and the annulus of each layer of casing. While the loads experienced by the suspension for the casing are mainly radial loads acting as a parison step, tensile loads acting as a weight of the casing and pressure loads in the well. The casing hanger should be able to withstand the weight of the suspended casing string without necking down to the point where it would interfere with the passage of the downhole tool. The existing wellhead device is not in place in the aspects of radial load, tensile load under the action of the weight of a casing and pressure load in a well, and deformation is easily generated in the using process to influence the passing of a downhole tool. In order to promote the exploration, development and production of oil fields, well logging while drilling and improve the productivity and economic benefits of the oil fields, the improvement of a wellhead device is urgent. The prior art does not have the height to the neck ring mostly and adjusts, can't adjust to the sleeve pipe of different length, and when not hanging, open space can make debris get into the well head, based on this, the utility model discloses a well head protection device of oil gas field development usefulness to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well head protection device of oil gas field development usefulness to solve the problem that proposes among the above-mentioned background art.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

the utility model provides a well head protection device of usefulness is opened out in oil gas field, includes the disc seat, the middle part position welding of disc seat has the lock sleeve, the outside annular welding of lock sleeve has the strengthening rib, the bottom and the disc seat welded fastening of strengthening rib, the outside annular of disc seat is provided with four fixed swivel nuts, the bottom mounting welding of fixed swivel nut is on the disc seat, the spiro union has the bolt that can carry out height control in the fixed swivel nut, the top of lock sleeve is provided with spacing top ring, set up the circular slot hole the same with the lock sleeve internal diameter on the spacing top ring, the bolt runs through spacing top ring, it has the nut to go back the spiro union on the bolt, bolt and nut lock fixedly to spacing top ring, it has the protective plug lid to peg graft on the spacing top ring, the protective plug lid passes spacing top ring, and the bottom is pegged graft in the lock sleeve.

Preferably, four reinforcing ribs are equidistantly arranged around the outer side wall of the lock sleeve.

Preferably, fastening bolts are uniformly distributed on the disc seat.

Preferably, the protection gag includes cock stem, fender lid and handle, the top at the cock stem is installed to the fender lid, the top at the fender lid is installed to the handle, the cock stem inserts in spacing top ring and the lock sleeve.

Preferably, the length of the bolt is 1.5 times the length of the fixed thread insert.

Preferably, the lock sleeve is flush with the upper end face of the fixed threaded sleeve.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses be convenient for protect well head device, all obtain promoting in the aspect of making equipment radial load and tensile load and pressure load support in the well, non-deformable guarantees passing through of downhole tool, can highly adjust spacing neck ring according to the needs of equipment such as sleeve pipe, and adaptability is bigger, and the protective plug lid seals the lock sleeve when the well head is in open state, avoids debris to get into in the well head.

Drawings

Fig. 1 is a schematic structural diagram of a wellhead protection device for oil and gas field development according to the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the protective plug of the present invention taken down;

fig. 4 is a schematic view of the protective plug of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-disc seat, 2-fixed screw sleeve, 3-bolt, 4-limit top ring, 5-lock sleeve, 6-reinforcing rib, 7-fastening bolt, 8-protective plug cover, 801-plug column, 802-baffle cover, 803-handle and 9-nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, the utility model provides a well head protection device for oil and gas field development, which comprises a disc seat 1, a lock sleeve 5 is welded at the middle position of the disc seat 1, a reinforcing rib 6 is welded at the outer side of the lock sleeve 5 in an annular manner, the bottom of the reinforcing rib 6 is welded with the disc seat 1, four fixing screw sleeves 2 are annularly arranged at the outer side of the disc seat 1, the bottom ends of the fixing screw sleeves 2 are fixedly welded on the disc seat 1, a bolt 3 capable of adjusting height is screwed in the fixing screw sleeves 2, a spacing top ring 4 is arranged above the lock sleeve 5, a circular groove hole with the same inner diameter as the lock sleeve 5 is arranged on the spacing top ring 4, the bolt 3 penetrates through the spacing top ring 4, a nut 9 is screwed on the bolt 3, the bolt 3 and the nut 9 lock and fix the spacing top ring 4, a protective plug cover 8 is inserted on the spacing top ring 4, the protective plug cover 8 penetrates through the spacing top ring, and the bottom is inserted in the lock sleeve 5.

Wherein, four reinforcing ribs 6 are equidistantly arranged around the outer side wall of the lock sleeve 5; fastening bolts 7 are uniformly distributed on the disc seat 1; the protective plug cover 8 comprises a plug 801, a blocking cover 802 and a handle 803, the blocking cover 802 is installed at the top end of the plug 801, the handle 803 is installed at the top of the blocking cover 802, and the plug 801 is inserted into the limit top ring 4 and the lock sleeve 5; the length of the bolt 3 is 1.5 times of the length of the fixed thread sleeve 2; the lock sleeve 5 is flush with the upper end surface of the fixed screw sleeve 2.

One specific application of this embodiment is: sleeve pipe handle 803 extracts protective plug cover 8 when using, the plug 801 of protective plug cover 8 is extracted from lock sleeve 5, loosen nut 9, the effective length between 3 adjustable bolts of rotatory bolt 3 and the fixed swivel nut 2, spacing top ring 4 sets up the height promptly, screw up nut 9 after the altitude mixture control ends, make spacing top ring 4 obtain fixedly, fix locking in the well head outside at disc seat 1, it controls sleeve pipe entering direction to set up the lock ring, strengthening rib 6 supports the fastening to lock sleeve 5, pressure load in the lifting shaft, spacing top ring 4 forms for the rigid material preparation, support through bolt 3 and fixed swivel nut 2, guarantee the device's radial load.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth herein. The present invention is capable of other embodiments and of being practiced and carried out in a variety of ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.

Claims

1. The utility model provides a well head protection device that oil gas field development was used which characterized in that: comprises a disc seat (1), a lock sleeve (5) is welded at the middle position of the disc seat (1), a reinforcing rib (6) is welded at the outer side of the lock sleeve (5) in an annular mode, the bottom of the reinforcing rib (6) is welded and fixed with the disc seat (1), four fixed screw sleeves (2) are annularly arranged at the outer side of the disc seat (1), the bottom fixed screws of the fixed screw sleeves (2) are welded on the disc seat (1), bolts (3) capable of adjusting height are screwed in the fixed screw sleeves (2), a limiting top ring (4) is arranged above the lock sleeve (5), a circular groove hole which is the same as the inner diameter of the lock sleeve (5) is formed in the limiting top ring (4), the bolts (3) penetrate through the limiting top ring (4), nuts (9) are screwed on the bolts (3), and the bolts (3) and the nuts (9) are locked and fixed on the limiting top ring (4), the limiting top ring (4) is inserted with a protective plug cover (8), the protective plug cover (8) penetrates through the limiting top ring (4), and the bottom of the protective plug cover is inserted into the lock sleeve (5).

2. A wellhead protection device for oil and gas field development according to claim 1, wherein: the reinforcing ribs (6) are arranged around the outer side wall of the lock sleeve (5) in four equidistant mode.

3. A wellhead protection device for oil and gas field development according to claim 1, wherein: fastening bolts (7) are uniformly arranged on the disc seat (1).

4. A wellhead protection device for oil and gas field development according to claim 1, wherein: the protective plug cover (8) comprises a plug column (801), a blocking cover (802) and a handle (803), the blocking cover (802) is installed at the top end of the plug column (801), the handle (803) is installed at the top of the blocking cover (802), and the plug column (801) is inserted into a limiting top ring (4) and a lock sleeve (5).

5. A wellhead protection device for oil and gas field development according to claim 1, wherein: the length of the bolt (3) is 1.5 times of the length of the fixed threaded sleeve (2).

6. A wellhead protection device for oil and gas field development according to claim 1, wherein: the lock sleeve (5) is flush with the upper end face of the fixed threaded sleeve (2).