CN212743938U

CN212743938U - High-pressure two-stage integral casing head

Info

Publication number: CN212743938U
Application number: CN202021295241.0U
Authority: CN
Inventors: 张必龙; 张艳艳; 丁钢
Original assignee: Yancheng Xudong Machinery Co ltd
Current assignee: Yancheng Xudong Machinery Co ltd
Priority date: 2020-07-04
Filing date: 2020-07-04
Publication date: 2021-03-19
Anticipated expiration: 2030-07-04

Abstract

The utility model relates to the technical field of casing heads, in particular to a high-pressure two-stage integral casing head which can effectively fix and support a casing string, prevent the casing string from being separated from the casing head and improve the practicability and the safety; including the casing head body, the hanger, multiunit adjusting bolt, the multiunit sliding block, go up valves and lower valves, multiunit slide opening has all been seted up to casing head body left end and right-hand member, casing head body left end and right-hand member all correspond and are provided with the multiunit connecting block, the multiunit connecting block all with casing head body formula structure as an organic whole, the multiunit connecting block is kept away from casing head body center one end and is all seted up the regulation screw hole, multiunit regulation screw hole corresponds the intercommunication with the multiunit slide opening respectively, multiunit adjusting bolt keeps away from casing head body center one end screw dress from the multiunit regulation screw hole respectively and passes multiunit regulation screw hole, the multiunit sliding block is slidable mounting respectively in the multiunit slide opening, the multiunit sliding block is.

Description

High-pressure two-stage integral casing head

Technical Field

The utility model relates to a technical field of casing head especially relates to an integral casing head of high pressure two-stage.

Background

As is well known, a high-pressure two-stage integral casing head is used for fixing a wellhead of a drilling well, connecting a wellhead casing string, supporting the gravity of a technical casing and an oil layer casing, sealing an annular space between layers of pipes, providing transitional connection for installing a blowout preventer, a tubing head and an oil tree, and performing construction operations such as mud compensation, mud extrusion, monitoring, balance liquid filling and the like through two side ports on a casing head body, and is widely used in the field of casing heads; the integral casing head of current high pressure two-stage lacks the fixed effect to the casing string when using, and is relatively poor to the fixed effect of support of casing string, and the operation easily makes casing head and casing string take place to break away from in the long-time high-pressure environment, leads to the practicality to reduce.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a can carry out effective fixed stay to the casing string, prevent that casing string and casing head from taking place to break away from, improve the integral casing head of high pressure two-stage of practicality and security.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a high-pressure two-stage integral casing head comprises a casing head body, a hanger, a plurality of groups of adjusting bolts, a plurality of groups of sliding blocks, an upper valve group and a lower valve group, wherein the upper valve group is respectively arranged at the left end and the right end of the top of the casing head body, the upper valve group and the lower valve group are respectively communicated with the casing head body, the lower valve group is respectively arranged at the left end and the right end of the bottom of the casing head body, the lower valve group is respectively communicated with the casing head body, pressure gauges are respectively arranged at the top ends of the upper valve group and the lower valve group, the hanger is arranged at the top of the casing head body, the hanger is in threaded connection with the casing head body, a plurality of groups of sliding holes are respectively arranged at the left end and the right end of the casing head body, a plurality of connecting blocks are respectively and correspondingly arranged with a plurality of connecting blocks, the plurality of connecting blocks are respectively in, multiunit adjust the screw hole and correspond the intercommunication with the multiunit slide opening respectively, multiunit adjusting bolt keeps away from casing head body center one end spiral shell dress from the multiunit adjusting screw hole respectively and passes multiunit adjusting screw hole, multiunit sliding block slidable mounting is in the multiunit slide opening respectively, and the multiunit sliding block is close to casing head body center one end rotatable coupling with multiunit adjusting bolt respectively, and the multiunit sliding block is close to casing head body one end and all fixedly is provided with arc splint.

Preferably, the multiple groups of sliding blocks are respectively matched with the multiple groups of sliding holes in a closely sliding manner.

Preferably, the plurality of groups of arc-shaped clamping plates are provided with anti-skid layers at one ends close to the center of the casing head.

Preferably, a support ring is arranged below the casing head body, and the top end of the support ring is fixedly connected with the bottom end of the casing head body through three groups of support blocks.

Preferably, the top and bottom peripheries of the casing head body are sleeved with reinforcing rings.

Preferably, the anti-skidding rotary tables are arranged at one ends, far away from the center of the casing head body, of the multiple groups of adjusting bolts.

(III) advantageous effects

Compared with the prior art, the utility model provides an integral casing head of high pressure two-stage possesses following beneficial effect: this integral casing head of high pressure two-stage, stretch into the casing head this internally with casing string from casing head body bottom spiral shell dress, through screwing multiunit adjusting bolt, multiunit adjusting bolt and multiunit connecting block threaded connection, thereby make multiunit adjusting bolt to being close to the removal of casing string direction, multiunit adjusting bolt drives multiunit sliding block and arc splint respectively and removes to being close to the casing string direction, thereby it is peripheral to make multiunit arc splint press from both sides tight casing string simultaneously, through this internal pressure of manometer monitoring casing head, this internal pressure control that carries on of casing head through last valves and lower valves, can carry out effective fixed stay to the casing string, prevent that casing string and casing head from taking place to break away from, practicality and security have been improved.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic perspective view of the connection relationship of the arc-shaped clamping plates of the present invention;

in the drawings, the reference numbers: 1. a casing head body; 2. a hanger; 3. adjusting the bolt; 4. a slider; 5. an upper valve group; 6. a lower valve group; 7. a pressure gauge; 8. connecting blocks; 9. an arc-shaped splint; 10. an anti-slip layer; 11. a support ring; 12. a support block; 13. a reinforcement ring; 14. an anti-skid rotary table.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the high-pressure two-stage integral casing head of the present invention comprises a casing head body 1, a hanger 2, a plurality of sets of adjusting bolts 3, a plurality of sets of sliding blocks 4, an upper set of valves 5 and a lower set of valves 6, wherein two sets of the upper set of valves 5 are respectively installed at the left end and the right end of the top of the casing head body 1, two sets of the upper set of valves 5 are both communicated with the inside of the casing head body 1, two sets of the lower set of valves 6 are respectively installed at the left end and the right end of the bottom of the casing head body 1, two sets of the lower set of valves 6 are both communicated with the inside of the casing head body 1, the top ends of the two sets of the upper set of valves 5 and the two sets of the lower set of valves 6 are both provided with a pressure gauge 7, the hanger 2 is installed at the top of the inside of the casing head body 1, the hanger 2 is in, the multiple groups of connecting blocks 8 are all of an integral structure with the casing head body 1, adjusting threaded holes are formed in one end, away from the center of the casing head body 1, of each group of connecting blocks 8, multiple groups of adjusting threaded holes are respectively communicated with multiple groups of sliding holes, multiple groups of adjusting bolts 3 are respectively screwed through the multiple groups of adjusting threaded holes from one end, away from the center of the casing head body 1, of each group of adjusting threaded holes, the multiple groups of sliding blocks 4 are respectively and slidably mounted in the multiple groups of sliding holes, the multiple groups of sliding blocks 4 are respectively and rotatably connected with one end, close to the center of the casing head body 1, of each group of adjusting bolts 3, arc-shaped clamping plates 9 are fixedly arranged at one end, close to the casing head body 1, of each group of sliding blocks 4, casing strings are screwed into the casing head body 1 from the bottom end of the casing head body 1, the multiple groups of, multiunit adjusting bolt 3 drives multiunit sliding block 4 and arc splint 9 respectively and removes to being close to the casing string direction to make multiunit arc splint 9 press from both sides tight casing string periphery simultaneously, through the pressure in the manometer 7 monitoring casing head body 1, carry out pressure control in to casing head body 1 through last valves 5 and lower valves 6, can carry out effective fixed stay to the casing string, prevent that casing string and casing head from taking place to break away from, improved practicality and security.

The utility model discloses an integral casing head of high pressure two-stage, multiunit sliding block 4 respectively with the multiunit slide opening closely cooperates the slip, multiunit sliding block 4 pastes tightly and sliding connection with multiunit slide opening inward flange respectively, when sliding block 4 slides, prevents that sliding block 4 from taking place to rock.

The utility model discloses an integral casing head of high pressure two-stage, multiunit arc splint 9 are close to casing head center one end all is provided with skid resistant course 10, prevents through skid resistant course 10 that arc splint 9 and casing string outer wall from taking place to slide.

The utility model discloses an integral casing head of high pressure two-stage, 1 below of casing head body is provided with support ring 11, support ring 11 top is through three supporting shoes 12 of group and 1 bottom fixed connection of casing head body, stabilizes the support to casing head body 1 through support ring 11 and three supporting shoes 12 of group.

The utility model discloses an integral casing head of high pressure two-stage, all the cover is equipped with beaded finish 13 in casing head body 1 top and bottom periphery, improves casing head body 1's intensity through two sets of beaded finishes 13.

The utility model discloses an integral casing head of high pressure two-stage, multiunit adjusting bolt 3 keeps away from 1 central one end of casing head body all is provided with anti-skidding carousel 14, is convenient for carry out rotation regulation to multiunit adjusting bolt 3 through multiunit anti-skidding carousel 14.

When the high-pressure two-stage integral casing head of the utility model is used, a casing string is inserted into the casing head body 1 from the bottom end of the casing head body 1 through screwing a plurality of groups of adjusting bolts 3, the plurality of groups of adjusting bolts 3 are in threaded connection with a plurality of groups of connecting blocks 8, so that the plurality of groups of adjusting bolts 3 move towards the direction close to the casing string, the plurality of groups of adjusting bolts 3 respectively drive a plurality of groups of sliding blocks 4 and arc-shaped clamping plates 9 to move towards the direction close to the casing string, the plurality of groups of sliding blocks 4 are respectively attached to and in sliding connection with the inner edges of a plurality of groups of sliding holes, the sliding blocks 4 are prevented from shaking when the sliding blocks 4 slide, so that the plurality of groups of arc-shaped clamping plates 9 simultaneously clamp the periphery of the casing string, the arc-shaped clamping plates 9 are prevented from sliding with the outer wall of the casing string through the anti-slip, support through support ring 11 and three supporting shoe 12 of group to casing head body 1 stabilize, improve the intensity of casing head body 1 through two sets of beaded finish 13, be convenient for carry out rotation regulation to multiunit adjusting bolt 3 through multiunit antiskid carousel 14, can carry out effective fixed stay to the casing string, prevent that casing string and casing head from taking place to break away from, improved practicality and security.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The high-pressure two-stage integral casing head is characterized by comprising a casing head body (1), a hanger (2), a plurality of groups of adjusting bolts (3), a plurality of groups of sliding blocks (4), an upper valve group (5) and a lower valve group (6), wherein the upper valve group (5) is respectively arranged at the left end and the right end of the top of the casing head body (1), the upper valve group (5) is communicated with the inside of the casing head body (1), the lower valve group (6) is respectively arranged at the left end and the right end of the bottom of the casing head body (1), the lower valve group (6) is communicated with the inside of the casing head body (1), the upper valve group (5) and the lower valve group (6) are respectively provided with a pressure gauge (7), the hanger (2) is arranged at the top of the inside of the casing head body (1), the hanger (2) is in threaded connection with the casing head body (1), and a plurality of groups of sliding holes are respectively arranged at the left end and the right end of, casing head body (1) left end and right-hand member all correspond and are provided with multiunit connecting block (8), multiunit connecting block (8) all with casing head body (1) formula structure as an organic whole, multiunit connecting block (8) are kept away from casing head body (1) center one end and are all seted up regulation screw hole, multiunit regulation screw hole corresponds the intercommunication with the multiunit slide opening respectively, multiunit adjusting bolt (3) are kept away from casing head body (1) center one end spiral shell dress from multiunit regulation screw hole respectively and are passed multiunit regulation screw hole, multiunit sliding block (4) slidable mounting respectively in the multiunit slide opening, multiunit sliding block (4) are close to casing head body (1) center one end rotatable coupling with multiunit adjusting bolt (3) respectively, and multiunit sliding block (4) are close to casing head body (1) one end and all fixedly are provided with arc splint.

2. A high-pressure two-stage integral casing head according to claim 1, wherein said sets of sliding blocks (4) slide in close fit with said sets of sliding holes, respectively.

3. A high pressure two-stage integral casing head according to claim 2, wherein the ends of the sets of the arc-shaped clamping plates (9) close to the center of the casing head are provided with anti-slip layers (10).

4. A high-pressure two-stage integral casing head according to claim 3, characterized in that a support ring (11) is arranged below the casing head body (1), and the top end of the support ring (11) is fixedly connected with the bottom end of the casing head body (1) through three sets of support blocks (12).

5. A high pressure two-stage integral casing head according to claim 4, characterised in that the casing head body (1) is sleeved with a reinforcement ring (13) on both top and bottom peripheries.

6. A high-pressure two-stage integral casing head according to claim 5, characterized in that the ends of the sets of adjusting bolts (3) away from the center of the casing head body (1) are provided with anti-slip turntables (14).