CN-224214145-U - Quick connecting device for wellhead device

CN224214145UCN 224214145 UCN224214145 UCN 224214145UCN-224214145-U

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a quick connecting device for a wellhead device, which comprises a variable lifting flange assembly, a fixed lifting flange assembly and a quick locking device; the variable lifting flange assembly comprises a bottom wire-planting bolt, a bottom heavy-duty hexagonal nut, a variable lifting flange and a sealing ring, wherein the bottom of the variable lifting flange is connected with the casing head assembly or the middle casing head four-way assembly, the sealing ring is arranged on the inner side surface of the variable lifting flange, the fixed lifting flange assembly comprises a fixed lifting flange, a top wire-planting bolt and a top heavy-duty hexagonal nut, the fixed lifting flange is connected with the operation blowout preventer, the fixed lifting flange and the variable lifting flange are sealed through the sealing ring and fixedly connected through a quick locking device. According to the utility model, different variable lifting flange assemblies can be selected according to different casing head assemblies and casing head four-way assemblies, and the fixed lifting flange assemblies are not required to be disassembled, so that the utility model has the advantages of quick installation, convenient maintenance, low cost and the like.

Inventors

CHEN BO
LIU SHEN
ZHAO MINGLIANG
CAO WEI
SUN QINGHONG
WANG JUNHENG
WANG TIANZHU
GUO CHUNYU
HU HUIYING
ZHANG JIAXU
CHENG JIALEI
Cui Luxue

Assignees

山东宏丰智能装备有限公司

Dates

Publication Date: 20260508
Application Date: 20250215

Claims (5)

1. A quick connect device for a wellhead assembly comprising a variable elevation flange assembly, a fixed elevation flange assembly, and a quick lock; The variable lifting flange assembly comprises a bottom wire planting bolt, a bottom heavy-duty hexagonal nut, a variable lifting flange and a sealing ring, wherein the bottom of the variable lifting flange is connected with the casing head assembly or the middle casing head four-way assembly through the bottom wire planting bolt and the bottom heavy-duty hexagonal nut; The fixed lifting flange assembly comprises a fixed lifting flange, a top wire planting bolt and a top heavy hexagonal nut, wherein the fixed lifting flange is connected with the working blowout preventer through the top wire planting bolt and the top heavy hexagonal nut, and the fixed lifting flange is sealed with the variable lifting flange through a sealing ring and fixedly connected through a quick locking device.
2. The quick connect device for wellhead assembly of claim 1 wherein the quick lock comprises two or more arcuate locking tabs secured by fastening bolts between adjacent locking tabs, the locking tabs being provided internally with a clamping slot for clamping the edges of the variable elevation flange and the bottom fixed elevation flange.
3. The quick connect apparatus for a wellhead as claimed in claim 1 wherein a bottom metal seal grommet is provided between the bottom of the variable lift flange and the casing head assembly or intermediate casing head four-way assembly.
4. The quick connect apparatus for a wellhead as claimed in claim 1 wherein a top metal seal grommet is provided between the top of the fixed riser flange and the service blowout preventer.
5. A quick connect device for a wellhead as claimed in any of claims 1 to 4 wherein the seal ring comprises a lip seal, O-ring + retainer ring, metal seal, packing seal.

Description

Quick connecting device for wellhead device Technical Field The utility model relates to the technical field of drilling equipment, in particular to a quick connecting device for a wellhead device. Background In the well drilling completion site, according to the bottom casing head assembly and the middle casing head four-way assembly, in order to meet the requirement of a drilling crew on the height of a datum line at the bottom of an operation blowout preventer, a plurality of raised flanges with high specifications are required to be prepared, the site installation and the disassembly are time-consuming and labor-consuming, the installation efficiency is affected, and the fund cost is increased. Therefore, there is a need to design a quick connect device for a wellhead. Disclosure of utility model The utility model aims to overcome the defects in the prior art and proposes to design a quick connection device for a wellhead device. The technical scheme adopted for solving the technical problems is as follows: A quick connect device for a wellhead includes a variable lift flange assembly, a fixed lift flange assembly, and a quick lock device; The variable lifting flange assembly comprises a bottom wire planting bolt, a bottom heavy-duty hexagonal nut, a variable lifting flange and a sealing ring, wherein the bottom of the variable lifting flange is connected with the casing head assembly or the middle casing head four-way assembly through the bottom wire planting bolt and the bottom heavy-duty hexagonal nut; The fixed lifting flange assembly comprises a fixed lifting flange, a top wire planting bolt and a top heavy hexagonal nut, wherein the fixed lifting flange is connected with the working blowout preventer through the top wire planting bolt and the top heavy hexagonal nut, and the fixed lifting flange is sealed with the variable lifting flange through a sealing ring and fixedly connected through a quick locking device. The quick connecting device is designed into the variable lifting flange assembly and the fixed lifting flange assembly, the variable lifting flange assembly and the fixed lifting flange assembly can be quickly connected through the quick locking device, the variable lifting flange assemblies with different specifications can be selected according to installation equipment at the bottom of the quick connecting device, such as a casing head assembly, a middle casing head four-way assembly and the like, the fixed lifting flange assembly does not need to be disassembled, the variable lifting flange assembly and the fixed lifting flange assembly can be quickly connected through the quick locking device, the installation efficiency of the quick connecting device can be greatly improved, meanwhile, only the variable lifting flange assemblies with different specifications are designed, and a large number of production costs are saved. Further, the quick locking device comprises two or more arc locking pieces, the adjacent locking pieces are fixed through fastening bolts, and clamping grooves for clamping the edges of the variable lifting flange and the bottom fixed lifting flange are formed in the inner sides of the locking pieces. Further, a bottom metal sealing gasket ring is arranged between the bottom of the variable lifting flange and the casing head assembly or the middle casing head four-way assembly. Further, a top metal gasket ring is arranged between the top of the fixed lifting flange and the working blowout preventer. Further, the seal ring comprises, but is not limited to, a lip seal ring, an O-ring and a retainer ring, a metal seal and a filler seal. The utility model has the technical effects that: Compared with the prior art, the quick connecting device for the wellhead device has the advantages that after the top of the operation blowout preventer is fastened with the top of the fixed lifting flange assembly, different variable lifting flange assemblies can be selected according to different casing head assemblies and casing head four-way assemblies on a well drilling and completion site, the fixed lifting flange assembly does not need to be disassembled, so that the field requirement is met, and the quick connecting device has the advantages of being quick in installation, convenient to maintain, low in cost and the like. Drawings FIG. 1 is a front view of a quick connect device for a wellhead according to the present utility model; FIG. 2 is a top view of the quick connect device for a wellhead of the present utility model; FIG. 3 is a longitudinal cross-sectional view of the quick connect device for a wellhead of the present utility model; FIG. 4 is an enlarged view of the quick connect device for a wellhead of the present utility model as shown in FIG. 3; Fig. 5 is a schematic view of the construction principle of another embodiment of the quick connection device for wellhead according to the present utility model. In the figure, 1, a bottom wire-planting bolt, 2, a bottom h