CN209145542U - It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration - Google Patents
It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration Download PDFInfo
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- CN209145542U CN209145542U CN201821727429.0U CN201821727429U CN209145542U CN 209145542 U CN209145542 U CN 209145542U CN 201821727429 U CN201821727429 U CN 201821727429U CN 209145542 U CN209145542 U CN 209145542U
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- wellhead assembly
- surface pipe
- hanger
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Abstract
The utility model discloses a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration, including standard base assembly, surface pipe mandrel hanger, crossover sub and wellhead assembly assembly, the upper end of surface pipe mandrel hanger is equipped with the consistent sealing of outer diameter of outer diameter and surface pipe, sealing protrudes into the lower lumen of wellhead assembly assembly, and it is tightly connected with wellhead assembly assembly lower cavity inner wall by sealing device, interconnecting piece is equipped with below surface pipe mandrel hanger, interconnecting piece is threadedly coupled with crossover sub, the lower end of crossover sub is equipped with the lock-screw connecting with surface pipe hanger upper end, wellhead assembly assembly bottom is equipped with multiple connection bolts, crossover sub is detachably connected by connection bolt with wellhead assembly assembly.It can save the time of sealing surface cleaning, simplify wellhead assembly installation, can be shortened the drilling and well completion activity duration, improve field operation efficiency.
Description
Technical field
The utility model relates to petroleum drilling and mining technical fields, and in particular to a kind of for shortening a spudding well activity duration
Wellhead assembly bottom connecting device.
Background technique
The connection type of wellhead assembly and surface pipe is blocked using the connection of screw-type bottom, substantially both at home and abroad at present
The connection of tile style bottom connects three kinds with welded type bottom.
The connection of screw-type bottom is that wellhead assembly bottom directlys adopt casing threads with surface pipe and is attached.The bottom
Connection type has following three disadvantages, first is that being threadedly coupled, make-up mode is complicated, and sleeve hydraulic clamp are not capable of clamping wellhead assembly
It is tightened on surface pipe, can only be driven with the turntable or top of drilling machine and be filled by prescribed torque rotation wellhead by dedicated convert device
It sets and is tightened on surface pipe.Second is that well cementing operation is complicated, dedicated cementing tool is needed, tool lower end jointed rod is shorted
And sealing-plug, then injection cement is cemented the well inside drilling rod, each to prevent cementing concrete to be adhered to casing head ontology inner hole
Sealing surface.Third is that the bottom connection type can not achieve emergency connection, when surface pipe blocks decentralization less than designated depth, no
It can be connected by the bottom of thread and directly switch to slips connection of meeting an urgent need.The bottom connection type job step is complicated, and operation difficulty is big, effect
Rate is low, and needs additional upper button tool and cementing tool, increases cost, sees Fig. 1.
The connection of welded type bottom is welded together wellhead assembly bottom and surface pipe to realize connection and sealing
Bottom connection type, the connection type must just can be carried out after surface pipe is cemented the well completely.The connection of welded type bottom is existing
Field falls wellhead assembly welding on surface pipe, or first in wellhead assembly bottom, one casing of welding is short in factory, then again
Transport to Oil Field being threaded on surface pipe by casing short joint lower part.The connection of welded type bottom, which needs to be equipped with, to be had
Professional, welding equipment, pressure testing equipment and welding procedure of maturation of site welding qualification etc..It needs to cut and beat before welding
Grinding set pipe must carry out pressure test to weld seam after welding, and pressure testing is unqualified, needs to reprocess weld seam, be welded again
Pressure check is stitched until qualified.The bottom connection type risk is higher, and the equipment needed is more, and execute-in-place difficulty is big, operation
It is at high cost, and the connection type must just can be carried out after surface pipe is cemented the well completely, increase the entire drillng operation time,
Low efficiency is shown in Fig. 2.
The bottom of falling slips connection is to fall the excitation bolt of slips hanger by tightening wellhead assembly bottom, excites slip insert
Block surface pipe.Bottom connection needs just to can be carried out after surface pipe is cemented the well completely, cuts and it also requires carrying out casing
It the sequence of operations such as cuts and polishes, increase the drillng operation time, working efficiency is low, sees Fig. 3.
Summary of the invention
The purpose of this utility model provides a kind of structurally reasonable, saving sealing aiming at defect of the existing technology
The time of face cleaning simplifies wellhead assembly installation, reduces operation difficulty, can save cementing concrete setting time, shorten drilling well and
The completion practice time improves the wellhead assembly bottom connection dress for shortening a spudding well activity duration of field operation efficiency
It sets.
The technical solution of the utility model is: a kind of wellhead assembly bottom connection for shortening a spudding well activity duration
Device, including standard base assembly, surface pipe mandrel hanger, crossover sub and wellhead assembly assembly, the surface pipe
Mandrel hanger is arranged in the upper surface of standard base assembly and is in contact with it, and the surface pipe mandrel hanger and surface layer cover
Pipe screw thread connection；
The upper end of the surface pipe mandrel hanger is equipped with the consistent sealing of outer diameter of outer diameter and surface pipe, described
Sealing protrudes into the lower lumen of wellhead assembly assembly, and passes through sealing device with the wellhead assembly assembly lower cavity inner wall
It is tightly connected, the lower section that the surface pipe mandrel hanger is located at sealing is equipped with the connection that outer diameter is greater than sealing outer diameter
Portion, the interconnecting piece are threadedly coupled with crossover sub, and the lower end of the crossover sub is equipped with can with surface pipe hanger upper end
The lock-screw of dismantling connection；
Wellhead assembly assembly bottom is equipped with multiple connection bolts parallel with surface pipe axis, the crossover sub
It is equipped with connection counterbore corresponding with connection bolt location, the crossover sub is filled by connection bolt and connection counterbore and well head
Assembly is set to be detachably connected.
Preferably, the wellhead assembly bottom connecting device further includes emergency base assembly and emergency slips hanger,
The wellhead assembly assembly is located at the upper surface of emergency base assembly；
Slips hanger includes slip spider and slip insert to the emergency, and the slip spider and slip insert pass through the tight of side wall
Determine screw to be detachably connected, the card that the lower end of the wellhead assembly assembly passes through the connection bolt and slips hanger of meeting an urgent need
Watt seat is detachably connected, and the lower cavity inner wall of the wellhead assembly is tightly connected by sealing device and surface pipe.
Preferably, the sealing of the surface pipe mandrel hanger and interconnecting piece are formed for being located wellhead assembly assembly
Step.
Preferably, the bottom connecting device further includes having mandrel hanger to fetch and deliver tool, and the mandrel hanger is fetched and delivered
The interconnecting piece of tool and surface pipe mandrel hanger is detachably connected, and the mandrel hanger is fetched and delivered in the upper chamber of tool
It is removably connected with promotion casing short joint.
Preferably, the crossover sub includes joint body and tight lock part from top to bottom, the outer diameter of the tight lock part with
The lower outer diameter of surface pipe mandrel hanger is consistent, and the outer diameter of the tight lock part is less than the outer diameter of joint body.
Preferably, annular groove, the diameter and well of the annular groove are equipped on the inside of the upper end of the emergency base assembly
The lower end outer diameter of mouth assembly of devices is adapted.
Preferably, the sealing device is the two seals being arranged on wellhead assembly assembly lower cavity inner wall.
Compared with prior art, having the advantage that structurally reasonable, it is connected through a screw thread and shortens one
Cementing operation time during spudding well improves field operation efficiency.The bottom connecting device realizes solid in surface pipe
It is mountable wellhead assembly before well cement solidification, than the peace for the wellhead assembly that the connection of former welded type bottom is connected with the bottom of falling slips
Dress saves one day to two days cementing concrete setting time.The connection of wellhead assembly bottom and crossover sub and with emergency fall slips
The connection of hanger assembly is all made of identical bolt, and the mandrel hanger neck outer diameter of design is identical as surface pipe outer diameter,
And wellhead assembly bottom bore design has twice bobbin seal, makes wellhead assembly bottom can seal standard situation layer set
Pipe mandrel hanger neck, and the surface pipe of emergency installation can be sealed.Surface pipe can be solved in this way blocks decentralization less than finger
Wellhead assembly emergency bottom connectivity problem when depthkeeping is spent, can gapless quick-replaceable.It is straight by the fast-assembling bottom connecting device
It connects injection cement to cement the well, solves cementing concrete and wellhead assembly inner hole contact problems after the connection well cementation of screw-type bottom, section
Sealing surface scavenging period is saved, well cementing operation difficulty is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model background technique Central Plains traditional type casing threads bottom connection；
Fig. 2 is the structural schematic diagram that the utility model background technique Central Plains traditional type welds bottom connection；
Fig. 3 is the structural schematic diagram of the utility model background technique Central Plains traditional type bottom of falling slips connection；
Fig. 4 is the structural schematic diagram of the utility model embodiment one；
Fig. 5 is the structural schematic diagram of the utility model embodiment two；
Fig. 6 is the structural schematic diagram that surface pipe mandrel hanger is installed in the utility model embodiment one；
Fig. 7 is the structural schematic diagram that crossover sub is installed in the utility model embodiment one；
Fig. 8 is the structural schematic diagram installed emergency pedestal in the utility model embodiment two and cut surface pipe；
In figure: 1. standard base assemblies, 2. surface pipe mandrel hangers, 3. crossover subs, 4. wellhead assembly assemblies, 5.
Surface pipe, 6. sealings, 7. interconnecting pieces, 8. steps, 9. joint bodies, 10. tight lock parts, 11. lock-screws, 12. connection spiral shells
Bolt, 13. connection counterbores, 14. mandrel hangers fetch and deliver tool, 15. casing short joints, 16. emergency base assembly, 17. emergency and fall to block
Watt hanger, 18. slip spiders, 19. slip inserts, 20. holding screws, 21. sealing devices, 22. annular grooves.
Specific embodiment
Here is that the present invention will be further described in conjunction with the accompanying drawings and embodiments.
Embodiment one
It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration, including mark referring to shown in Fig. 4
Quasi- base assembly 1, surface pipe mandrel hanger 2, crossover sub 3 and wellhead assembly assembly 4.Surface pipe mandrel hanger 2
The upper surface of standard base assembly 1 is set and is in contact with it, surface pipe mandrel hanger 2 is threadedly coupled with surface pipe 5.
4 bottom of wellhead assembly assembly is realized by surface pipe mandrel hanger 2, crossover sub 3 and surface pipe 5 when i.e. standard is installed
It is threadedly coupled.
Wherein, the upper end of surface pipe mandrel hanger 2 is equipped with the consistent sealing 6 of outer diameter of outer diameter and surface pipe 5,
Sealing 6 protrudes into the lower lumen of wellhead assembly assembly 4 when installation, and passes through with 4 lower cavity inner wall of wellhead assembly assembly close
Seal apparatus 21 is tightly connected, and sealing device 21 is the twice O-ring seal being arranged on 4 inner wall of wellhead assembly assembly.Pass through this
Kind mode, is threadedly coupled wellhead assembly assembly 4 with surface pipe through surface pipe mandrel hanger 2, on the one hand passes through sealing
Portion 6 solves cementing concrete and wellhead assembly inner hole contact problems after the connection well cementation of screw-type bottom, saves sealing surface scavenging period,
Reduce well cementing operation difficulty；On the other hand it can realize and exchange with the component of emergency installation, it is simple and convenient, and this installation
One day to two days cementing concrete setting time can be saved.The lower section that surface pipe mandrel hanger 2 is located at sealing 6 is equipped with outer
Diameter is greater than the interconnecting piece 7 of sealing outer diameter, and the sealing 6 and interconnecting piece 7 of surface pipe mandrel hanger 2 are formed for being located well
The step 8 of mouth assembly of devices 4, interconnecting piece 7 are threadedly coupled with crossover sub 3, this step 8 is concordant with the upper surface of crossover sub 3,
It is convenient for limiting the lower end of wellhead assembly assembly 4 in this way.
In addition, as shown in fig. 7, crossover sub 3 includes joint body 9 and tight lock part 10 from top to bottom, tight lock part 10
Outer diameter is consistent with the lower outer diameter of surface pipe mandrel hanger 2, and the outer diameter of tight lock part 10 is less than the outer diameter of joint body 9.
By screw thread installation locking screw 11 on tight lock part 10, crossover sub 3 and surface pipe hanger 2 can be fixed together,
And prevent later period wellhead assembly from rotating around surface pipe mandrel hanger 2.
4 bottom of wellhead assembly assembly is equipped with multiple connection bolts 12 parallel with 5 axis of surface pipe, on crossover sub 3
Equipped with connection counterbore 13 corresponding with connection 12 position of bolt, crossover sub 3 passes through connection bolt 12 and connection counterbore 13 and well
Mouth assembly of devices 4 is detachably connected.
It further includes having mandrel hanger to fetch and deliver tool 14, and mandrel hanger fetches and delivers tool 14 and surface pipe mandrel is hung
The interconnecting piece 7 of device 2 is detachably connected, and mandrel hanger, which is fetched and delivered, is removably connected with that promote casing short in the upper chamber of tool 14
Connect 15.Fetching and delivering tool 14 by mandrel hanger can be convenient mobile and installation surface pipe mandrel hanger 2, transfer entire pipe
Column is located on standard base assembly 1 until surface pipe mandrel hanger 2, then fetches and delivers tool 14 and table from mandrel hanger
Injection cement is cemented the well inside layer casing mandrel hanger 2, Fig. 6.It after having infused cementing concrete, thes cement solidifies without waiting, i.e.,
Mountable wellhead assembly saves the time, improves working efficiency.
Working principle: nominally installing wellhead assembly assembly 4, surface pipe 5 transferred to designated depth first, will
Mandrel hanger fetches and delivers the upper end that tool 14 is installed to surface pipe mandrel hanger 2, then slings the suspension of surface pipe mandrel
Device 2 is connected by casing threads and surface pipe mandrel hanger 2 is installed on surface pipe 5, transfers entire tubing string until table
Layer casing mandrel hanger 2 is located on standard base assembly 1, then fetches and delivers tool 14 and surface pipe core from mandrel hanger
Cement is injected inside axle suspension hanging device 2 to cement the well.After having infused cementing concrete, the cement solidifies without waiting, i.e., mountable well head dress
Assembly 4 is set, dismounting mandrel hanger first fetches and delivers tool 14, slings crossover sub 3, is installed to by ACME-LH connection screw thread
2 top of surface pipe mandrel hanger, the lock-screw 11 for tightening 3 lower part of crossover sub prevent 4 turns of later period well head assembly of devices
It is dynamic, Fig. 7.Wellhead assembly assembly 4 is sling to transfer along surface pipe mandrel hanger 2 and connection bolt 12 and sit on crossover sub 3
On, then on be tightly connected bolt 12.From 4 bottom twice bobbin seal " the O-shaped sealing of instrument connection applied voltage test wellhead assembly assembly
The sealing performance of circle ", pressure test qualification then complete wellhead assembly installation.
Embodiment two
As shown in figure 5, wellhead assembly bottom connecting device further includes emergency base assembly 16 and emergency slips hanger
17, wellhead assembly assembly 4 is located at the upper surface of emergency base assembly 16；4 bottom of wellhead assembly assembly passes through when emergency installation
Slips hanger 17 is connect emergency with the realization slips of surface pipe 5.
Wherein, slips hanger 17 includes slip spider 18 and slip insert 19 to emergency, and slip spider 18 and slip insert 19 pass through
The holding screw 20 of side wall is detachably connected, and the lower end of wellhead assembly assembly 4 passes through connection bolt 12 and the emergency suspension of falling slips
The slip spider 18 of device 17 is detachably connected, and the lower cavity inner wall of wellhead assembly assembly 4 passes through sealing device 21 and surface pipe 5
It is tightly connected.Sealing device 21 is the two seals being arranged on 4 lower cavity inner wall of wellhead assembly assembly.
Annular groove 22, the diameter and wellhead assembly of the annular groove 22 are equipped on the inside of the upper end for base assembly 16 of meeting an urgent need
The lower end outer diameter of assembly 4 is adapted, and can be limited to the lower end of wellhead assembly assembly 4 by annular groove 22, thus right
Wellhead assembly assembly 4 is supported.
Wellhead assembly is installed under case of emergency, when surface pipe 5 blocks decentralization less than designated depth, then switchs to emergency peace
Dress.Emergency installation must carry out after the completion of surface pipe 5 is cemented the well, first installation emergency base assembly 16, then cut surface layer set
Pipe 5 arrives specified altitude assignment, Fig. 8.Slips hanger 17 of meeting an urgent need is installed to the bottom of wellhead assembly assembly 4, it is tight to tighten slip insert
Determining screw 20 connect slip insert 19 with slip spider 18, and 19 internal diameter of slip insert is made to be greater than 5 outer diameter of surface pipe, is in opening state
Then state is sling wellhead assembly assembly 4 and is transferred on surface pipe 5.Slip insert holding screw 20 is removed, keeps slip insert 19 opposite
It is move freely in the conical surface of slip spider 18, the connection bolt 12 then tightened on wellhead assembly assembly 4 excites slips hanger card
Firmly casing.Because the sealing 6 of the surface pipe mandrel hanger 2 of standard installation is identical as 5 outer diameter of surface pipe and standard is pacified
Connection 12 specification of bolt and distribution circle and the connection bolt 12 for slips hanger 17 of meeting an urgent need of well head crossover sub 3 when dress are advised
Lattice and distribution circle are identical, therefore the standard connection of 4 bottom of wellhead assembly assembly and emergency connection can exchange completely, and guarantee well head
Device height is constant.
There is twice bobbin seal by the design of 4 bottom of wellhead assembly assembly, realizes that wellhead assembly can seal standard situation
The sealing 6 of layer casing mandrel hanger, and the surface pipe 5 when emergency installation can be sealed.It stays and is put not when casing clamp
It then can directly be connected by the standard bottom connection bottom that switch to meet an urgent need when to designated depth.The company of wellhead assembly bottom and crossover sub
It connects and is all made of identical bolt, the mandrel hanger neck outer diameter and table of design with the connection of the emergency assembly of falling slips hanger
Layer sleeve outer is identical, and wellhead assembly bottom bore design has twice bobbin seal, seal wellhead assembly bottom can
Nominally surface pipe mandrel hanger neck, and the surface pipe of emergency installation can be sealed.Surface layer set can be solved in this way
Pipe clamp stay wellhead assembly when putting less than designated depth emergency bottom connectivity problem, can gapless quick-replaceable.
The utility model is not limited to above-mentioned embodiment, within the knowledge of those skilled in the art,
The present invention can also be realized without departing from the purpose of the present invention. Make a variety of changes, and the content after variation still falls within the utility model
Protection scope.
Claims (7)
1. a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration, it is characterised in that: including standard
Base assembly, surface pipe mandrel hanger, crossover sub and wellhead assembly assembly, the surface pipe mandrel hanger setting
Standard base assembly upper surface and be in contact with it, the surface pipe mandrel hanger is threadedly coupled with surface pipe；
The upper end of the surface pipe mandrel hanger is equipped with the consistent sealing of outer diameter of outer diameter and surface pipe, the sealing
Portion protrudes into the lower lumen of wellhead assembly assembly, and is sealed with the wellhead assembly assembly lower cavity inner wall by sealing device
Connection, the lower section that the surface pipe mandrel hanger is located at sealing are equipped with the interconnecting piece that outer diameter is greater than sealing outer diameter, institute
It states interconnecting piece to be threadedly coupled with crossover sub, the lower end of the crossover sub is equipped with detachably to be connected with surface pipe hanger upper end
The lock-screw connect；
Wellhead assembly assembly bottom is equipped with multiple connection bolts parallel with surface pipe axis, sets on the crossover sub
There is connection counterbore corresponding with connection bolt location, the crossover sub is total by connection bolt and connection counterbore and wellhead assembly
At being detachably connected.
2. it is according to claim 1 a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration,
It is characterized by: the wellhead assembly bottom connecting device further includes emergency base assembly and emergency slips hanger, it is described
Wellhead assembly assembly is located at the upper surface of emergency base assembly；
Slips hanger includes slip spider and slip insert, the clamp screw that the slip spider and slip insert pass through side wall to the emergency
Nail is detachably connected, the slip spider that the lower end of the wellhead assembly assembly passes through the connection bolt and slips hanger of meeting an urgent need
It is detachably connected, the lower cavity inner wall of the wellhead assembly is tightly connected by sealing device and surface pipe.
3. it is according to claim 1 a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration,
It is characterized by: the sealing of the surface pipe mandrel hanger and interconnecting piece form the platform for being located wellhead assembly assembly
Rank.
4. it is according to claim 1 a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration,
It is characterized by: the bottom connecting device further includes having mandrel hanger to fetch and deliver tool, the mandrel hanger fetches and delivers tool
It is detachably connected with the interconnecting piece of surface pipe mandrel hanger, the mandrel hanger is fetched and delivered removable in the upper chamber of tool
It unloads and is connected with promotion casing short joint.
5. it is according to claim 1 a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration,
It is characterized by: the crossover sub includes joint body and tight lock part from top to bottom, the outer diameter of the tight lock part and surface layer
The lower outer diameter of casing mandrel hanger is consistent, and the outer diameter of the tight lock part is less than the outer diameter of joint body.
6. it is according to claim 2 a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration,
It is characterized by: being equipped with annular groove on the inside of the upper end of the emergency base assembly, the diameter and well head of the annular groove are filled
The lower end outer diameter for setting assembly is adapted.
7. a kind of wellhead assembly bottom for shortening a spudding well activity duration according to claim 1 or 2 connects dress
It sets, it is characterised in that: the sealing device is the two seals being arranged on wellhead assembly assembly lower cavity inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727429.0U CN209145542U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727429.0U CN209145542U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
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| Publication Number | Publication Date |
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| CN209145542U true CN209145542U (en) | 2019-07-23 |
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| CN201821727429.0U Active CN209145542U (en) | 2018-10-24 | 2018-10-24 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267956A (en) * | 2018-10-24 | 2019-01-25 | 山东科瑞井控系统制造有限公司 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
-
2018
- 2018-10-24 CN CN201821727429.0U patent/CN209145542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267956A (en) * | 2018-10-24 | 2019-01-25 | 山东科瑞井控系统制造有限公司 | It is a kind of for shortening the wellhead assembly bottom connecting device of a spudding well activity duration |
| CN109267956B (en) * | 2018-10-24 | 2024-03-29 | 威飞海洋装备制造有限公司 | Wellhead bottom connecting device for shortening drilling operation time |
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Address after: 257000 Dongying District Shengli Industrial Park, Dongying City, Shandong Province, south of South 2 Road and east of West 6 Road Patentee after: Weifei Marine Equipment Manufacturing Co., Ltd. Address before: 257000 Dongying District Shengli Industrial Park, Dongying City, Shandong Province, south of South 2 Road and east of West 6 Road Patentee before: SHANDONG KERUI WELL CONTROL SYSTEM MANUFACTURING Co.,Ltd. |