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CN-224228638-U - Test crossover sub and test well head

CN224228638UCN 224228638 UCN224228638 UCN 224228638UCN-224228638-U

Abstract

The utility model relates to a test wellhead adapter technical field specifically is a test adapter, including test wellhead body and adapter body, flange one on test wellhead body top has flange two through bolted connection, and flange two is fixed in the bottom of adapter body, sealed recess has all been seted up on flange one and flange two surfaces, and sealed recess embeds is equipped with sealed the pad; the beneficial effects are as follows: when the first flange and the second flange are connected through bolts, the sealing grooves of the two groups correspond to the sealing pressing blocks respectively, the sealing pressing blocks are positioned right above the sealing grooves and apply pressure to the sealing gasket, so that the bevel edges of the sealing gasket are attached to the multiple groups of inner trapezoid protruding blocks in the grooves to form multiple contact surfaces, the pressing force and the attachment performance are enhanced, and therefore a closed sealing space is constructed, and substances in a wellhead cannot leak; due to the adoption of the two groups of sealing structures with opposite directions, the medium inside the wellhead can be effectively prevented from leaking outwards.

Inventors

  • DING MINGHUI
  • BAO RONG

Assignees

  • 盐城欧胜石油机械有限公司

Dates

Publication Date
20260512
Application Date
20250807

Claims (6)

  1. 1. A test conversion connector comprises a test wellhead body (1) and a conversion connector body (2), wherein a first flange (3) at the top end of the test wellhead body (1) is connected with a second flange (4) through bolts, and the second flange (4) is fixed at the bottom end of the conversion connector body (2), and the test conversion connector is characterized in that sealing grooves (6) are formed in the surfaces of the first flange (3) and the second flange (4), sealing gaskets (9) are embedded in the sealing grooves (6), and sealing structures are pressed on the surfaces of the sealing gaskets (9).
  2. 2. The test adapter of claim 1, wherein the sealing grooves (6) are provided with two groups, the notch of the sealing groove (6) is of an isosceles trapezoid annular structure, the sealing groove (6) close to the inner ring of the test wellhead body (1) is arranged on the surface of the flange II (4), and the other group is arranged on the surface of the flange I (3).
  3. 3. The test adapter of claim 2, wherein the inner bottom end of the sealing groove (6) is provided with a caulking groove (8), the groove width of the caulking groove (8) is smaller than the groove width of the inner bottom end of the sealing groove (6), and the caulking groove (8) is in an annular structure.
  4. 4. A test conversion joint according to claim 3, wherein the bottom end of the sealing gasket (9) is located in the caulking groove (8), the inclined edge of the sealing gasket (9) is attached to the inclined edge of the sealing groove (6), and the shape of the sealing gasket (9) is identical to the shape of the sealing groove (6).
  5. 5. The test adapter according to any one of claims 2-4, wherein the sealing structure comprises a sealing pressing block (5) and inner trapezoid protruding blocks (7), the sealing pressing block (5) is fixed on the surfaces of the first flange (3) and the second flange (4), the sealing pressing block (5) is provided with two groups, the sealing pressing blocks (5) and the sealing grooves (6) are in one-to-one correspondence, the sealing pressing block (5) is located right above the sealing grooves (6), the sealing pressing block (5) is of an annular structure with an isosceles trapezoid cross section, the size of the sealing pressing block (5) is smaller than that of the sealing grooves (6), the inner trapezoid protruding blocks (7) are provided with a plurality of groups, the inner trapezoid protruding blocks (7) are fixed on the two side inclined edges of the sealing grooves (6), the inner trapezoid protruding blocks (7) are distributed along the inclined edge arrays, the sealing pressing block (5) is pressed on the inclined edges of the sealing gasket (9) under the condition that the flange (3) and the flange (4) are in a bolt connection mode.
  6. 6. A test wellhead comprising a test crossover joint according to any one of claims 1 to 5.

Description

Test crossover sub and test well head Technical Field The utility model relates to the field of a test wellhead adapter, in particular to a test adapter. Background In the operation process of oil and gas well test, through the test, the fluid pressure, flow and components of the wellhead can be accurately measured, and the productivity and reserve of the hydrocarbon reservoir are judged, so that a related scheme is formulated for subsequent development, therefore, a high-strength and high-tightness connecting interface is required to be formed between the test wellhead and upper equipment to ensure that petroleum in the well cannot leak during the test. However, in the prior art, the sealing gasket is embedded on the first flange and the second flange to seal, but leakage is easy to occur due to uneven stress of the sealing surface, displacement or aging of the gasket under a high-pressure environment, so that the overall sealing effect is reduced, and the sealing effect is not durable. Disclosure of utility model The present utility model is directed to a test adapter for solving the above-mentioned problems. The utility model provides the technical scheme that the testing wellhead comprises a testing wellhead body and an adapter body, wherein a flange I at the top end of the testing wellhead body is connected with a flange II through bolts, the flange II is fixed at the bottom end of the adapter body, sealing grooves are formed in the surfaces of the flange I and the flange II, a sealing gasket is embedded in the sealing grooves, and a sealing structure is pressed on the surface of the sealing gasket. Preferably, the sealing grooves are provided with two groups, the notch of each sealing groove is of an isosceles trapezoid annular structure, the sealing groove close to the inner ring of the testing wellhead body is formed in the surface of the second flange, and the other group of sealing grooves is formed in the surface of the first flange. Preferably, the inner bottom of the sealing groove is provided with a caulking groove, the groove width of the caulking groove is smaller than the groove width of the bottom in the sealing groove, and the caulking groove is of an annular structure. Preferably, the bottom end of the sealing gasket is positioned in the caulking groove, the inclined edge of the sealing gasket is attached to the inclined edge of the sealing groove, and the shape of the sealing gasket is the same as that of the sealing groove. Preferably, the sealing structure comprises a sealing pressing block and inner trapezoid protruding blocks, the sealing pressing block is fixed on the surfaces of the first flange and the second flange, the sealing pressing blocks are provided with two groups, the sealing pressing blocks and the sealing grooves are in one-to-one correspondence, the sealing pressing blocks are located right above the sealing grooves, the sealing pressing blocks are of annular structures with isosceles trapezoid cross sections, the size of the sealing pressing blocks is smaller than that of the sealing grooves, the inner trapezoid protruding blocks are provided with multiple groups, the inner trapezoid protruding blocks are fixed on the oblique sides of the sealing grooves, the inner trapezoid protruding blocks are distributed along the oblique side arrays, and under the conditions of the first flange and the second flange in a bolt connection mode, the oblique sides of the sealing pressing blocks are pressed on the surfaces of the inner trapezoid protruding blocks. A test wellhead includes the test adapter. Compared with the prior art, the utility model has the beneficial effects that: When the flange I and the flange II are connected through the bolts, the sealing grooves of the two groups correspond to the sealing pressing blocks respectively, the sealing pressing blocks are positioned right above the sealing grooves to apply pressure to the sealing gasket, so that the bevel edges of the sealing gasket are attached to the multiple groups of inner trapezoid protruding blocks in the grooves to form multiple contact surfaces, the compaction force and the attachment property are enhanced, a sealed space is built, substances in a wellhead cannot leak, and due to the fact that two groups of opposite sealing structures are adopted, medium inside the wellhead can be effectively prevented from leaking outwards, and the sealing effect is greatly improved. Drawings FIG. 1 is a schematic diagram of the overall structure of the present utility model; FIG. 2 is a schematic top view of the structure of FIG. 1 of the present utility model; FIG. 3 is a schematic view of the cross-sectional structure of the view A-A of FIG. 2 in accordance with the present utility model; FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model; FIG. 5 is an exploded view of the overall structure of the present utility model; FIG. 6 is a schematic view of the structure o