CN217358897U - Assembly and check assembly for Christmas tree isolation sleeve - Google Patents

Abstract

The utility model discloses a subassembly is checked in christmas tree isolation sleeve assembly, including test sled body, test stake and at least one well head connector, wherein the test stake is used for simulating wellhead pipe to can be fixed in with the mode of dismantling on the test sled body, have the inside and outside test channel A who link up on it, one of them is used for connecting and locking test stake and the christmas tree that is equipped with the isolation sleeve. By adopting the scheme, the ground check test of the Christmas tree isolation sleeve is conveniently and rapidly realized, and the method has the advantages of good reliability, simple and feasible structure, convenience in operation and low implementation cost.

Description

Assembly and check assembly for Christmas tree isolation sleeve

Technical Field

The utility model belongs to production tree part detects the instrument field, concretely relates to assembly of production tree isolation sleeve checks subassembly.

Background

The Christmas tree isolation sleeve is one of important parts at the connection part of a wellhead pipe and a Christmas tree, the sealing isolation effect of the Christmas tree isolation sleeve directly influences the exploitation safety, particularly the sealing performance of some offshore platforms underwater Christmas trees is particularly important, and therefore the sealing performance and the reliability of the connection between the isolation sleeve and the Christmas tree and between the isolation sleeve and the wellhead pipe are required to be checked before each wellhead tree works at present. And if after the well head is installed to production tree and isolation sleeve, check again, and the leakproofness checks not up to standard, then must change the installation again, and the person needs wait for the fortune of spare part to reach even, has delayed the engineering progress greatly, has increased engineering cost, consequently need to assist the device that carries out isolation sleeve leakproofness test on quick ground promptly to ensure isolation sleeve sealing reliability, avoid or reduce the engineering loss who brings from this.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a subassembly is checked in Christmas tree isolation sleeve assembly to test is checked on ground of carrying out the Christmas tree isolation sleeve fast, leakproofness trouble appears after avoiding or reducing the installation under water.

The technical scheme is as follows:

the utility model provides a subassembly is checked in assembly of production tree isolation sleeve which the key lies in, includes:

test pry body

The test pile is used for simulating a wellhead pipe, can be detachably fixed on the test pry body, and is provided with a test channel A which is communicated with the inside and the outside;

and at least one wellhead connector, wherein one connector is used for connecting and locking the test pile and the Christmas tree provided with the isolation sleeve.

Scheme more than adopting, during the test with the test stake fixed with the test sled body on, the production tree that will install the isolation sleeve passes through wellhead connector again and fixes to the test stake on, seals the top of production tree again, can seal to the test stake through test channel A and suppress the test, can judge fast according to pressure whether the leakproofness of isolation sleeve connection site is good.

Preferably, the method comprises the following steps: the middle part of the testing pry body is provided with a supporting flange which is detachably arranged, and the bottom of the testing pile is provided with a screw hole matched with the supporting flange. By adopting the scheme, the test pile and the support flange can be replaced quickly, so that the test pile can adapt to the specifications of different Christmas trees, and meanwhile, a reserved space can be reserved for the bottom operation of the test pile.

Preferably, the method comprises the following steps: the bottom of the test pile is open, and a sealing plug matched with the test pile is arranged, wherein the sealing plug is large in upper part and small in lower part. By adopting the scheme, the test pile provided with the sealing plug can be used for testing the sealing performance, the end load is relatively large and is also easy to damage in the test process, the sealing plug is convenient to replace in the later period, and the whole service life is prolonged.

Preferably, the method comprises the following steps: two guide rods are respectively arranged at two opposite angles of the testing pry body. By adopting the scheme, the Christmas tree is convenient to hoist and place right above the test pile, and the guide effect is mainly played.

Preferably, the method comprises the following steps: two diagonally arranged guide rods have a height difference. By adopting the scheme, the alignment difficulty can be reduced, and only two guide rods need to be aligned in sequence in the lowering process without being aligned simultaneously.

Preferably, the method comprises the following steps: the test pry is characterized in that a test tube A is arranged on the test pry body, one end of the test tube A is communicated with the test channel A, and the other end of the test tube A is provided with a hydraulic joint A. The test tube A can be always kept in a state of being communicated with an external pressure source through the hydraulic connector A, and during testing, the test can be carried out only by directly communicating the test tube A with the test channel A or keeping the communication state, so that the test efficiency is improved, and the preparation time is shortened.

Preferably, the method comprises the following steps: the sealing plug is of a hollow structure, a testing channel B communicated with the interior of the testing pile is arranged on the sealing plug, a testing pipe B is arranged on the testing prying body and communicated with the testing channel B, and a hydraulic connector B is arranged at the other end of the testing prying body. By adopting the scheme, the test tube B and the test channel B form a second test way, and different pressure sources can be adopted for testing, so that the standby or overlapping effect is mainly achieved.

Preferably, the method comprises the following steps: the testing channel A is arranged along the radial direction of the testing pile, and the testing channel B is arranged along the axial direction of the testing pile. By adopting the scheme, the pressure source can enter the test pile from different directions, so that the test reliability is improved.

Preferably, the method comprises the following steps: the wellhead connector is provided with two connectors, one connector is used for connecting and locking the test pile and the Christmas tree with the isolation sleeve, and the other connector is used for connecting the top of the Christmas tree. By adopting the scheme, the lifting and top sealing of the Christmas tree are facilitated.

Preferably, the method comprises the following steps: the test pry body is rectangular, four corners of the upper surface of the test pry body are provided with two lug lifting lugs which are arranged upwards, and four sides of the test pry body are provided with lifting lugs which are arranged outwards. By adopting the scheme, the hoisting and horizontal fixing of the prying body can be conveniently tested

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides a subassembly is checked in production tree isolation sleeve assembly is convenient for realize the ground check test of production tree isolation sleeve fast, and has good reliability, and simple structure is feasible, convenient operation, and the implementation cost is low.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of a test sled;

FIG. 5 is a schematic diagram of a wellhead connector configuration (with a top seal head);

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a cross-sectional view taken at A-A of FIG. 6;

FIG. 8 is a cross-sectional view taken at B-B of FIG. 6;

FIG. 9 is a cross-sectional view of a test pile;

fig. 10 is a cross-sectional view of the sealing plug.

Detailed Description

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

Referring to fig. 1 to 10, the christmas tree isolation sleeve assembly checking assembly mainly comprises a testing skid 1, a testing pile 2 and at least one wellhead connector 3, wherein the testing pile 2 is mainly used for simulating a wellhead pipe, can be detachably fixed on the testing skid 1, and is provided with a testing channel a20 which is internally and externally communicated, one wellhead connector 3 is used for connecting and locking the testing pile 2 and a christmas tree 5 (only the structure of the christmas tree is shown in the figure) provided with an isolation sleeve 4, during testing, the christmas tree 5 provided with the isolation sleeve 4 is seated on the testing pile 2 through the wellhead connector 3 and is locked and fixed, the bottom of the testing pile 2 and the top of the christmas tree 5 are sealed, so that the testing pile 2 can be pressed through the testing channel a20, because the inside of the testing pile 2 is communicated with the christmas tree 5, so that the connection part of the isolation sleeve 4 and the testing pile 2 can be tested, and the sealing performance of the connection part of the wellhead connector 3.

With particular reference to fig. 1 and 4, the testing sled 1 of the present embodiment is substantially rectangular, and has a support flange 10 detachably disposed at the middle thereof, the support flange 10 having an upper flange for connecting with the testing pile 2, and a lower flange connected with the testing sled 1, and as shown in the figure, the bottom of the testing pile 2 has a screw hole matching with the upper flange of the support flange 10.

The upper surface of the testing pry body 1 is a plane, and simultaneously, according to the requirements of field disassembly and assembly and part placement, the upper surface of the testing pry body 1 is provided with a placement area 16 and a hollowed-out area 17 which are respectively arranged at opposite angles, in addition, two opposite angles on the testing pry body 1 are respectively provided with a guide rod 11, as shown in the figure, the guide rods 11 are vertically arranged, the center point of the horizontal connecting line of the two guide rods 11 is coincided with the center of the testing pile 2, and meanwhile, the alignment difficulty is reduced, so that the two guide rods 11 have height difference in the embodiment.

In order to facilitate quick lifting and fixing, two opposite corners of the upper surface of the test pry body 1 in the embodiment are provided with two lug lugs 14 which are arranged upwards, and four lugs 15 which are arranged outwards are arranged on four sides of the upper surface of the test pry body.

Referring to fig. 9 and 10, the testing pile 2 is substantially hollow and cylindrical, the upper end and the lower end of the testing pile 2 are both open, and the sealing plugs 6 matched with the testing pile are arranged, the sealing plugs 6 are big at the upper part and small at the lower part, the lower end of the testing pile 2 is provided with a cavity matched with the sealing plugs 6, the upper part of the sealing plugs 6 is provided with an annular groove 61 for installing a sealing ring, the sealing ring is installed in the annular groove 61, the sealing performance between the sealing plug and the testing pile 2 can be improved, and meanwhile, the pressure resistance of the sealing plugs 6 adopting the structure can be greatly improved. The upper end of the test pile 2 is externally provided with a locking threaded section 23 matched with the wellhead connector.

The test pry body 1 is provided with a test tube A12, one end of the test tube A12 is communicated with a test channel A20, and the other end is provided with a hydraulic joint A120, as shown in figures 3 and 9, the test channel A20 extends from the lower end face of the test pile 2 to the upper part of the sealing ring along the axial direction of the test tube, and then extends through the inner wall of the test pile 2 along the radial direction of the test pile 2.

On the basis, the sealing plug 6 in this embodiment is a hollow rotary body structure, and has a testing channel B60 communicated with the inside of the testing pile 2, the testing pry body 1 is provided with a testing tube B13, the testing tube B13 is communicated with the testing channel B60, and the other end is provided with a hydraulic connector B130, as shown in fig. 3 and 10, the testing channel B60 is arranged along the axial direction of the testing pile 2.

In specific implementation, the parts of the test tube A12 and the test tube B13, which are positioned on the test pry body 1, can be arranged in parallel, the hydraulic joint A120 and the hydraulic joint B130 are positioned at the same position and are covered by the protective cover 18 for protection, and thumping or dust loss is avoided.

Referring to fig. 1 to 3, and 5 to 8, the wellhead connector 3 in this application has two, one for connecting and locking the test piles 2 and the christmas tree 5 with the isolation sleeve 4, and the other for connecting and sealing the top of the christmas tree 5.

As shown in the figure, the wellhead connector 3 is similar to most of the existing Christmas tree connectors in structure, such as patent No. 202110416902.3, named as "wellhead connector, mechanical unlocking tool and unlocking method", and mainly comprises an outer cylinder 31 with open upper and lower ends and in a hollow rotary structure, an upper body 30 and a lower body 32 are respectively arranged at the upper end and the lower end in the outer cylinder 31, the upper body 30 and the lower body 32 are both detachably arranged in the outer cylinder 31 (mainly in threaded connection), an annular claw 36 is arranged between the axial gaps of the upper body 30 and the lower body 32, a sealing cavity 34 is formed by the radial clearance between the upper body 30, the lower body 32 and the annular clamping jaw 36 and the outer cylinder body 31, a sealing plug 35 which is in sliding fit with the sealing cavity 34 is arranged in the sealing cavity 34, the radial inner side of the sealing plug 35 is contacted with the annular clamping jaw 36, and has a concave-convex profile for urging the annular jaws 36 together or for releasing the annular jaws 36.

The upper body 30 is provided with the unlocking rods 37 which are uniformly distributed and vertically arranged, the unlocking rods 37 penetrate through the upper body 30 and then are fixedly connected with the sealing plug 35, and the sealing plug 35 can be synchronously driven to move up and down only by lifting or lifting the unlocking rods 37 below, so that the annular clamping jaws 36 are driven to be folded, locked or unlocked.

In this embodiment, the lower wellhead connector 3 further has a VX sealing steel ring 33, as shown in fig. 3 and 7, the VX sealing steel ring 33 is located above the annular jaw 36, the VX sealing steel ring 33 is annular and is fixed in the upper body 30 mainly by a support pin 38, the support pin 38 adopts a similar spring pin structure, and the VX sealing steel ring 33 is pressed and fixed after sequentially penetrating through the outer cylinder 31 and the upper body 30.

In this embodiment, the wellhead connector 3 at the upper part is mainly used for quickly realizing the top sealing of the christmas tree 5, as shown in the figure, a top sealing head 7 is arranged in the wellhead connector 3, the fixing mode between the top sealing head 7 and the wellhead connector 3 is similar to that of the VX sealing steel ring 33, and meanwhile, the top of the top sealing head 7 is provided with a shackle.

Referring to the Christmas tree isolation sleeve assembly checking assembly shown in fig. 1 to 10, during testing, the testing pry body 1 is fixed, then the assembly is carried out according to the structure shown in the drawing, the testing pipe A12 and/or the testing pipe B13 are connected with an external pressure source (a hydraulic source or a high-pressure air source), then high pressure is driven into the testing pile 2, whether the connection part is sealed or not can be judged quickly by observing the stable pressure condition, and the operation is simple, quick and reliable.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims (10)

1. The utility model provides a subassembly is checked in assembly of production tree isolation sleeve which characterized in that includes:

testing pry body (1)

The testing pile (2) is used for simulating a wellhead pipe, can be detachably fixed on the testing pry body (1), and is provided with a testing channel A (20) which is communicated with the inside and the outside;

at least one wellhead connector (3), one of which is used to connect and lock the test pile (2) and a christmas tree (5) fitted with an isolation sleeve (4).

2. The Christmas tree isolation kit assembly check assembly of claim 1, wherein: the middle part of the testing pry body (1) is provided with a supporting flange (10) which is detachably arranged, and the bottom of the testing pile (2) is provided with a screw hole matched with the supporting flange (10).

3. The Christmas tree isolation kit assembly check assembly of claim 2, wherein: the bottom of the test pile (2) is open, a sealing plug (6) matched with the test pile is arranged, and the sealing plug (6) is large in top and small in bottom.

4. The Christmas tree isolation kit assembly checking assembly of claim 1 or 2, wherein: two opposite angles of the testing pry body (1) are respectively provided with a guide rod (11).

5. The Christmas tree isolation sleeve assembly check assembly of claim 4, wherein: two diagonally arranged guide rods (11) have a height difference.

6. The Christmas tree isolation kit assembly check assembly of claim 1, wherein: the test pry body (1) is provided with a test tube A (12), one end of the test tube A (12) is communicated with a test channel A (20), and the other end of the test tube A (12) is provided with a hydraulic connector A (120).

7. The Christmas tree isolation kit assembly check assembly of claim 3, wherein: the sealing plug (6) is of a hollow structure, a testing channel B (60) communicated with the interior of the testing pile (2) is arranged on the sealing plug, a testing tube B (13) is arranged on the testing pry body (1), the testing tube B (13) is communicated with the testing channel B (60), and a hydraulic joint B (130) is arranged at the other end of the testing tube B (13).

8. The Christmas tree isolation kit assembly checking assembly of claim 6 or 7, wherein: the testing channel A is arranged along the radial direction of the testing pile (2), and the testing channel B (60) is arranged along the axial direction of the testing pile (2).

9. The Christmas tree isolation kit assembly check assembly of claim 1, wherein: the wellhead connector (3) is provided with two connectors, one connector is used for connecting and locking the test pile (2) and a Christmas tree (5) provided with an isolation sleeve (4), and the other connector is used for connecting the top of the Christmas tree (5).

10. The Christmas tree isolation kit assembly check assembly of claim 1, wherein: the testing pry body (1) is rectangular, two opposite corners of the upper surface of the testing pry body are provided with two lug lifting lugs (14) which are arranged upwards, and the four sides of the testing pry body are provided with lifting lugs (15) which are arranged outwards.

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