CN-224200621-U - High-pressure water injection wellhead device

CN224200621UCN 224200621 UCN224200621 UCN 224200621UCN-224200621-U

Abstract

The utility model relates to the technical field of wellhead devices, in particular to a high-pressure water injection wellhead device which comprises a high-pressure water injection pump main body, a high-pressure water pipe arranged at the water outlet end of the high-pressure water injection pump main body, a flange I on the high-pressure water pipe is connected with a flange II through a bolt, the flange II is fixed on a water injection tree, a mounting groove is formed in the surface of the flange II, a mounting block is embedded in the mounting groove, a fixing structure is fixed below the mounting block, and a sealing ring is embedded in the mounting block.

Inventors

HAO JIEFU
REN BO
CUI YI

Assignees

盐城市煜洋石油机械有限公司

Dates

Publication Date: 20260505
Application Date: 20250702

Claims (4)

1. The high-pressure water injection wellhead device comprises a high-pressure water injection pump main body (1), a high-pressure water pipe (2) is arranged at the water outlet end of the high-pressure water injection pump main body (1), a flange I (3) on the high-pressure water pipe (2) is connected with a flange II (4) through bolts, the flange II (4) is fixed on a water injection tree (5), and the high-pressure water injection wellhead device is characterized in that an installation groove (6) is formed in the surface of the flange II (4), an installation block (10) is embedded in the installation groove (6), a fixed structure is fixed below the installation block (10), the installation block (10) is deformable, and a sealing ring (7) is embedded in the installation block (10).
2. A high pressure water injection wellhead assembly as claimed in claim 1 wherein the first flange (3) is fixed to the other end of the high pressure water pipe (2) and the second flange (4) is fixed to the water inlet at the side of the water injection tree (5).
3. The high-pressure water injection wellhead device according to claim 1, wherein the fixing structure comprises a connecting ring (8), clamping blocks (9) and clamping grooves (12), the clamping blocks (9) are provided with two groups, the two groups of clamping blocks (9) are respectively fixed on the inner annular surface of the connecting ring (8) and the outer annular surface of the connecting ring (8), the clamping blocks (9) are all provided with a plurality of groups, the two groups of clamping blocks (9) are circumferentially distributed by the central shaft of the connecting ring (8), the clamping grooves (12) are circular grooves with the fracture being in a convex shape, the clamping grooves (12) are communicated with the mounting grooves (6), the upper ends of the connecting ring (8) extend into the mounting grooves (6), the upper surfaces of the connecting ring (8) are fixed on the lower surfaces of the mounting blocks (10), the lower ends of the connecting ring (8) extend into the clamping grooves (12), the clamping blocks (9) are located in the clamping grooves (12), the clamping blocks (9) are blocked by the notch of the clamping grooves (12), and the clamping blocks (9) are shaped blocks.
4. The high-pressure water injection wellhead device according to claim 1, wherein the mounting block (10) is of a frame structure with an isosceles trapezoid cross section, the top surface of the mounting block (10) is provided with a groove, the sealing ring (7) is positioned in the groove, two groups of limiting blocks (11) are fixed at the end part of the mounting block (10), the two groups of limiting blocks (11) are respectively clamped with the two end parts of the sealing ring (7), chamfers are arranged at the two sides of the mounting groove (6), the flange I (3) and the flange II (4) after the mounting block (10) are mounted, the two protruding sides of the mounting block (10) are attached to the chamfers of the mounting groove (6), the limiting blocks (11) on the mounting block (10) are flush with the surface of the flange II (4), when the sealing ring (7) and the mounting block (10) are in an initial state, the height of the upper surface of the mounting block (10) is higher than the height of the upper surface of the flange II (4), the upper ends of the sealing ring (7) are higher than the upper surfaces of the limiting blocks (11), and the mounting block (10) and the sealing ring (7) are made of elastic materials.

Description

High-pressure water injection wellhead device Technical Field The utility model relates to the field of wellhead devices, in particular to a high-pressure water injection wellhead device. Background In order to improve the oil extraction efficiency, the high-pressure water injection mode is adopted to control the high-pressure water flow to enter an underground oil layer, the water density is high, the oil is driven to flow below oil, crude oil in an oil reservoir is driven to move to an oil extraction well, a wellhead device mainly comprises a casing head, a tubing head and the oil extraction tree, the oil extraction tree in the wellhead device is disassembled and replaced into a water injection tree, a high-pressure water pipe of the high-pressure water injection pump is connected, the high-pressure water injection pump is used for pressurizing water through a mechanical driving piston to enable the water to obtain high-pressure energy, the water is sent into the high-pressure water pipe through a high-pressure water outlet joint, and water injection operation is realized. In prior art, if a high pressure water injection wellhead assembly, its application number is CN202411893130.2, its elasticity that adopts the spring acts on the fixture block, can make the fixture block card go into the draw-in groove inside, and then can realize that the clamping of second casing and third casing is connected, and when need separating second casing, third casing, only need shift up the removal ring, pull the fixture block through the haulage rope and shift out the draw-in groove, can remove the connection of second casing and third casing, and then conveniently take out filtering mechanism and clear up, the clearance of staff has been made things convenient for, the efficiency of work has been improved. But its in-service use in-process, need frequently dismantle the casing, it just can make to dismantle between the casing through pulling the fixture block and breaking away from the draw-in groove with the help of the haulage rope with removing the ring upward to change the sealing washer, the sealing washer often blocks in the ring flange, is difficult to dismantle. Disclosure of utility model The utility model aims to provide a high-pressure water injection wellhead device so as to solve the problems in the background art. The high-pressure water injection pump comprises a high-pressure water injection pump body, a high-pressure water pipe arranged at the water outlet end of the high-pressure water injection pump body, a flange I on the high-pressure water pipe is connected with a flange II through a bolt, the flange II is fixed on a water injection tree, a mounting groove is formed in the surface of the flange II, a mounting block is embedded in the mounting groove, a fixing structure is fixed below the mounting block, the mounting block is deformable, and a sealing ring is embedded in the mounting block. Preferably, the first flange is fixed at the other end of the high-pressure water pipe, and the second flange is fixed on the water inlet at the side part of the water injection tree. Preferably, the fixed knot constructs including go-between, fixture block and draw-in groove, the fixture block is equipped with two sets of, and two sets of fixture blocks are fixed respectively at the interior anchor ring of go-between and the outer anchor ring of go-between, and every group fixture block all is equipped with a plurality of, and two sets of fixture blocks are circumference distribution with the center pin of go-between, and the draw-in groove is the ring groove that the fracture is "protruding" font, draw-in groove and mounting groove intercommunication, and the go-between upper end stretches into in the mounting groove, and the upper surface of go-between is fixed at the lower surface of mounting block, and the lower extreme of go-between stretches into in the draw-in groove, and the fixture block is in the inside of draw-in groove, and the fixture block is blockked by the notch of draw-in groove, and the fixture block is the shaping piece. Preferably, the installation piece is the frame body structure that the section is isosceles trapezoid, the top surface of installation piece is seted up flutedly, the sealing washer is located the recess, the tip of installation piece is fixed with two sets of limit pieces, two sets of limit pieces joint two tip of sealing washer respectively, the both sides of mounting groove are equipped with the chamfer, flange one and flange two after the installation is accomplished, the chamfer of mounting groove is laminated on the convex both sides of installation piece, and stopper and flange two surface parallel and level on the installation piece, when sealing washer and installation piece are in initial condition, the height of installation piece upper surface is higher than the height of flange two upper surface, the upper end of sealing washer is higher than the upper surface of