CN109281629A - A kind of four-in-one body formula wellhead assembly - Google Patents
A kind of four-in-one body formula wellhead assembly Download PDFInfo
- Publication number
- CN109281629A CN109281629A CN201811269324.XA CN201811269324A CN109281629A CN 109281629 A CN109281629 A CN 109281629A CN 201811269324 A CN201811269324 A CN 201811269324A CN 109281629 A CN109281629 A CN 109281629A
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- China
- Prior art keywords
- wellhead assembly
- hanger
- hole
- protective casing
- ontology
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001681 protective effect Effects 0.000 claims abstract description 83
- 238000005553 drilling Methods 0.000 claims abstract description 20
- 241000254175 Anthonomus grandis Species 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to oil drilling and extracting equipment field more particularly to a kind of four-in-one body formula wellhead assemblies.Its technical solution are as follows: a kind of four-in-one body formula wellhead assembly, including conduit are arranged with surface pipe in conduit；It is welded with bracket on the conduit, wellhead assembly ontology is fixed on bracket, wellhead assembly ontology is disposed with the first side through hole, the second side through hole, third side through hole from top to bottom, is equipped with down slips on wellhead assembly ontology, slips is connect with surface pipe；One is provided in wellhead assembly ontology for setting the ontology step of protective casing hanger.The present invention provides one kind in the four-in-one body formula wellhead assembly for recovering the oil and not needing to lift preventer group, replacement wellhead assembly and change ground installation before (gas) tree is gone into operation that changes the outfit, and avoids since well head does not have preventer to there are problems that larger security risk, heavy workload when making replacing well head device.
Description
Technical field
The present invention relates to oil drilling and extracting equipment field more particularly to a kind of four-in-one body formula wellhead assemblies.
Background technique
The wellhead assembly of complete set and production tree are mainly made of casing head, tubing head and oil recovery (gas) tree three parts.
Preventer is mounted on casing head top when drilling well and constitutes wellhead for drilling；(gas) tree of recovering the oil is mounted on tubing head when complete well
Top constitutes (gas) wellhead assembly that recovers the oil.Wherein, the effect of casing head is to connect surface pipe, hang the multilayer set in well
Annular space between pipe, sealing sleeve pipe and casing；The main function of tubing head is between suspension oil pipe, sealing oil pipe and casing
Annular space；The main function of tubing head is suspension oil pipe, seals the annular space between oil pipe and casing；The master of production tree
Act on is switch, control and guidance gas stream and sealing oil pipe.Whole device need to meet drilling well, well cementation and testing pressure down hole, wash
The complete well job that requires special skills of the formation testings such as well, fracture acidizing.
Multiple replacing well head device and preventer group are needed using traditional casing head, tubing head and oil recovery (gas) tree, with
Choke manifold and kill manifold such as repeatedly connect at the process for changing ground installation, and changing the outfit once need to be again to preventer group and ground
Facility carries out pressure testing, spends time and cost.From security consideration, although there is inner blowout preventer well head there is no preventer in well, institute
With in replacing well head security risk it is quite big.Once during replacing well head, since downhole gas is gone here and there rapidly to well head, and
Well head leads to the generation of gas blowout accident without preventer.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide it is a kind of change the outfit recover the oil do not need to lift before (gas) tree is gone into operation it is anti-
Spray apparatus group, replacement wellhead assembly and the four-in-one body formula wellhead assembly for changing ground installation, avoid since well head does not have blowout prevention
Device makes the presence of larger security risk, heavy workload when replacing well head device.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of four-in-one body formula wellhead assembly, including conduit are arranged with surface pipe in conduit；It is welded on the conduit
Bracket is fixed with wellhead assembly ontology on bracket, and wellhead assembly ontology is disposed with the first side through hole, second side from top to bottom
Through-hole, third side through hole are equipped with down slips on wellhead assembly ontology, and slips is connect with surface pipe；Wellhead assembly ontology
One is inside provided with for setting the ontology step of protective casing hanger.
As a preferred solution of the present invention, bottom platform valve, middle layer plate are separately installed on the wellhead assembly ontology
Valve, upper panel valve group, upper panel valve group include two flap types being serially connected, and bottom platform valve and the first side through hole connect
Logical, middle layer flap type is connected to the second side through hole, and upper panel valve group is connected to third side through hole.
As a preferred solution of the present invention, BT sealing ring is provided between the wellhead assembly ontology and surface pipe.
As a preferred solution of the present invention, the first protective casing, are successively arranged in the surface pipe from outside to inside
Two protective casings, oil pipe have set the first protective casing hanger, the first protective casing hanger and the first skill on ontology step
Art casing connection, the first hanger through-hole is provided on the first protective casing hanger, and the first hanger through-hole and second side are logical
Hole connection；It is provided with the first hanger step on first protective casing hanger, has set the second skill on the first hanger step
Art casing hanger, the second protective casing hanger are connect with the second protective casing, are provided on the second protective casing hanger
Second hanger through-hole, the second hanger through-hole are connected to third side through hole；Second is provided on second protective casing hanger
Hanger step has set boll-weevil hanger on the second hanger step, and boll-weevil hanger is connect with oil pipe.
As a preferred solution of the present invention, first protective casing is 95/8" protective casing, the second protective casing are 7 "
Protective casing, oil pipe 31/2" oil pipe.
As a preferred solution of the present invention, the wellhead assembly bodies top is equipped with cover board, cover board and boll-weevil hanger
Connection.
As a preferred solution of the present invention, the first jackscrew, one end of the first jackscrew are installed on the wellhead assembly ontology
First protective casing hanger is held out against.
As a preferred solution of the present invention, the wellhead assembly chamber body is equipped with wearing bush, is provided on wearing bush
Several drilling well fluid apertures, the first side through hole, the second side through hole, third side through hole pass through drilling well fluid apertures and are connected to wearing bush inner cavity,
Second jackscrew is installed, one end of the second jackscrew holds out against wearing bush on wellhead assembly ontology.
As a preferred solution of the present invention, the wearing bush is 133/8" wearing bush.
Compared with prior art, the beneficial effects of the present invention are:
1, wellhead assembly ontology of the invention is integral type, and open up on its side wall the first side through hole, the second side through hole,
Third side through hole can then install each layer flap type respectively on wellhead assembly ontology, convenient for each layer casing after oil recovery (gas) tree that changes the outfit
Between cavity be connected to flap type.Outermost protective casing can be set on the ontology step of wellhead assembly ontology, then is changed the outfit
Before (gas) tree of recovering the oil is gone into operation, it is only necessary to set outermost layer protective casing hanger on ontology step, then outermost
Superposition is sequentially overlapped each internal layer hanger on protective casing hanger, and is all connected with corresponding pipeline on each layer hanger.It bores
When well and oil recovery, wellhead assembly ontology is changed without always also not to be disassembled, easy to operate.This mode does not need to lift preventer
Group replacement wellhead assembly and change ground installation, so that it may complete the examination such as drilling well, well cementation and testing pressure down hole, well-flushing, fracture acidizing
The complete well job that requires special skills of oil.It avoids and is made since well head does not have preventer from security consideration due to not needing replacing well head device
At security risk big problem when replacing well head device.The invention can ensure that well control safety, reduce drilling period, save drilling well at
This.
2, bottom platform valve, middle layer flap type, upper panel valve group can control respectively the first side through hole, the second side through hole,
The on-off of third side through hole, so that the first side through hole, the second side through hole, third side are logical in well after each layer casing of tripping in and oil pipe
Hole can be carried out control and guidance gas stream to each layer annular space.
3, BT sealing ring can guarantee reliably seals between surface pipe and wellhead assembly ontology, and gas-liquid is avoided to reveal.
4, when oil recovery (gas) tree that changes the outfit is gone into operation, the first protective casing is successively set on the ontology step of wellhead assembly ontology
Hanger, the second protective casing hanger, boll-weevil hanger do not need then to lift preventer group replacement wellhead assembly and change ground
Face facility, it is easy to operate, reduce security risk.Annular space and the first side through hole between surface pipe and the first protective casing
Annular space between connection, the first protective casing and the second protective casing is connected to the second side through hole, the second protective casing and
Annular space between oil pipe is connected to third side through hole, then each sheaf space can respectively obtain control.It only needs that integration is arranged
Wellhead assembly ontology, the separation and control of each sheaf space can be realized, avoid when wellhead assembly needs to dismount it is troublesome in poeration,
The big problem of security risk.
5, the first protective casing is 95/8" protective casing, the second protective casing are 7 " protective casings, oil pipe 31/2" oil
Pipe, meets requirement.
6, it after each layer protective casing of tripping in well and oil pipe, is connect with cover board with oil pipe, external device (ED) when facilitating oil recovery
Connection.
7, the first jackscrew can hold out against the first protective casing hanger, so that the first protective casing hanger obtains reliably admittedly
It is fixed, improve safety.
8, when a well is drilled, wellhead assembly chamber body is packed into wearing bush, and inlet device ontology does not influence normal drilling well
Work.Second jackscrew can hold out against wearing bush, guarantee that wearing bush is reliably fixed.
9, wearing bush 133/8" wearing bush meets size requirement.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention when recovering the oil (gas)；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the partial enlarged view in Fig. 1 at B；
Fig. 4 is the partial enlarged view in Fig. 1 at C；
Schematic structural view of the invention when Fig. 5 is drilling state；
In figure, 1- conduit, 2- surface pipe, 3- bracket, 4- wellhead assembly ontology, 5- falls slips, 6- ontology step, the bottom 7-
Layer flap type, the middle layer 8- flap type, 9- upper panel valve group, 10-BT sealing ring, the first protective casing of 11-, the second technology of 12-
Casing, 13- oil pipe, 14- the first protective casing hanger, 15- the first hanger step, 16- the second protective casing hanger,
17- the second hanger step, 18- boll-weevil hanger, 19- cover board, the first jackscrew of 20-, 21- wearing bush, the second jackscrew of 22-.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment one
A kind of four-in-one body formula wellhead assembly, including conduit 1 are arranged with surface pipe 2 in conduit 1；It is welded on the conduit 1
It is connected to bracket 3, wellhead assembly ontology 4 is fixed on bracket 3, it is logical that wellhead assembly ontology 4 is disposed with the first side from top to bottom
Hole, the second side through hole, third side through hole are equipped with down slips 5 on wellhead assembly ontology 4, and slips 5 is connect with surface pipe 2；
One is provided in wellhead assembly ontology 4 for setting the ontology step 6 of protective casing hanger.
Wellhead assembly ontology 4 of the invention is integral type, and open up on its side wall the first side through hole, the second side through hole,
Third side through hole can then install each layer flap type respectively on wellhead assembly ontology 4, convenient for each layer casing after oil recovery (gas) tree that changes the outfit
Between cavity be connected to flap type.Outermost protective casing can be set on the ontology step 6 of wellhead assembly ontology 4, then is changed
Dress recovers the oil before (gas) tree goes into operation, it is only necessary to set outermost layer protective casing hanger on ontology step 6, then in outermost layer
Protective casing hanger on superposition be sequentially overlapped each internal layer hanger, and be all connected with corresponding pipeline on each layer hanger.
When drilling well and oil recovery, wellhead assembly ontology 4 is changed without always also not to be disassembled, easy to operate.This mode does not need to lift blowout prevention
Device group replaces wellhead assembly and changes ground installation, so that it may complete drilling well, well cementation and testing pressure down hole, well-flushing, fracture acidizing etc.
The complete well job that requires special skills of formation testing.From security consideration, due to not needing replacing well head device, avoid since well head does not have preventer and
Security risk big problem when causing replacing well head device.The invention can ensure that well control safety, reduces drilling period, drilling well is saved
Cost.
Embodiment two
On the basis of example 1, bottom platform valve 7, middle layer plate are separately installed on the wellhead assembly ontology 4
Valve 8, upper panel valve group 9, upper panel valve group 9 include two flap types being serially connected, and bottom platform valve 7 and the first side are logical
Hole connection, middle layer flap type 8 are connected to the second side through hole, and upper panel valve group 9 is connected to third side through hole.
Bottom platform valve 7, middle layer flap type 8, upper panel valve group 9 can control respectively the first side through hole, the second side through hole,
The on-off of third side through hole, thus in well after each layer casing of tripping in and oil pipe 13, the first side through hole, the second side through hole, third side
Through-hole can be carried out control and guidance gas stream to each layer annular space.
Embodiment three
On the basis of embodiment one or embodiment two, BT is provided between the wellhead assembly ontology 4 and surface pipe 2
Sealing ring 10.
BT sealing ring 10 can guarantee reliably to be sealed between surface pipe 2 and wellhead assembly ontology 4, and gas-liquid is avoided to reveal.
Example IV
On the basis of above-mentioned any one embodiment, it is successively arranged with the first skill from outside to inside in the surface pipe 2
Art casing 11, the second protective casing 12, oil pipe 13 have set the first protective casing hanger 14, the first technology on ontology step 6
Casing hanger 14 is connect with the first protective casing 11, and the first hanger through-hole is provided on the first protective casing hanger 14,
First hanger through-hole is connected to the second side through hole；The first hanger step 15 is provided on first protective casing hanger 14,
The second protective casing hanger 16, the second protective casing hanger 16 and the second technology set have been set on first hanger step 15
Pipe 12 connects, and the second hanger through-hole is provided on the second protective casing hanger 16, and the second hanger through-hole and third side are logical
Hole connection；It is provided with the second hanger step 17 on second protective casing hanger 16, has been set on the second hanger step 17
Boll-weevil hanger 18, boll-weevil hanger 18 are connect with oil pipe 13.
When oil recovery (gas) tree that changes the outfit is gone into operation, the first protective casing is successively set on the ontology step 6 of wellhead assembly ontology 4
Hanger 14, the second protective casing hanger 16, boll-weevil hanger 18, then do not need to lift preventer group replacement wellhead assembly and
Change ground installation, it is easy to operate, reduce security risk.Annular space between surface pipe 2 and the first protective casing 11 with
First side through hole is connected to, the annular space between the first protective casing 11 and the second protective casing 12 is connected to the second side through hole,
Annular space between second protective casing 12 and oil pipe 13 is connected to third side through hole, then each sheaf space can respectively obtain control
System.It only needs to be arranged integrated wellhead assembly ontology 4, the separation and control of each sheaf space can be realized, avoid well head dress
Set troublesome in poeration, problem that security risk is big when needing to dismount.
Embodiment five
On the basis of above-mentioned any one embodiment, first protective casing 11 is 95/8" protective casing, the second skill
Art casing 12 is 7, and " protective casing, oil pipe 13 are 31/2" oil pipe.
First protective casing 11 is 95/8" protective casing, the second protective casing 12 are 7 " protective casing, oil pipe 13 are 31/2"
Oil pipe meets requirement.
Embodiment six
On the basis of above-mentioned any one embodiment, cover board 19, cover board 19 are installed at the top of the wellhead assembly ontology 4
It is connect with boll-weevil hanger 18.
After each layer protective casing of tripping in well and oil pipe 13, connect with cover board 19 with oil pipe 13, when facilitating oil recovery outside
The connection of device.
Embodiment seven
On the basis of above-mentioned any one embodiment, the first jackscrew 20 is installed on the wellhead assembly ontology 4, first
One end of jackscrew 20 holds out against the first protective casing hanger 14.
First jackscrew 20 can hold out against the first protective casing hanger 14, so that obtain can for the first protective casing hanger 14
By fixation, safety is improved.
Embodiment eight
On the basis of above-mentioned any one embodiment, 4 inner cavity of wellhead assembly ontology is equipped with wearing bush 21, abrasionproof
Several drilling well fluid apertures are provided on set 21, the first side through hole, the second side through hole, third side through hole pass through drilling well fluid apertures and abrasionproof
The connection of 21 inner cavities is covered, second jackscrew 22 is installed on wellhead assembly ontology 4, one end of the second jackscrew 22 holds out against wearing bush 21.
When a well is drilled, 4 inner cavity of wellhead assembly ontology is packed into wearing bush 21, and inlet device ontology 4 does not influence normally to bore
Well work.Second jackscrew 22 can hold out against wearing bush 21, guarantee that wearing bush 21 is reliably fixed.
Embodiment nine
On the basis of above-mentioned any one embodiment, the wearing bush 21 is 133/8" wearing bush.Wearing bush 21 is
133/8" wearing bush meets size requirement.
Claims (9)
1. a kind of four-in-one body formula wellhead assembly, including conduit (1), conduit (1) is interior to be arranged with surface pipe (2)；Its feature exists
In, it is welded with bracket (3), is fixed on bracket (3) wellhead assembly ontology (4) on the conduit (1), wellhead assembly ontology (4)
It is disposed with the first side through hole, the second side through hole, third side through hole from top to bottom, wellhead assembly ontology is equipped with down on (4)
Slips (5), slips (5) is connect with surface pipe (2)；One is provided in wellhead assembly ontology (4) for setting technology set
The ontology step (6) of pipe hanger.
2. a kind of four-in-one body formula wellhead assembly according to claim 1, which is characterized in that the wellhead assembly ontology
(4) bottom platform valve (7), middle layer flap type (8), upper panel valve group (9), upper panel valve group (9) packet are separately installed on
Two flap types being serially connected are included, bottom platform valve (7) is connected to the first side through hole, and middle layer flap type (8) and second side are logical
Hole connection, upper panel valve group (9) are connected to third side through hole.
3. a kind of four-in-one body formula wellhead assembly according to claim 1, which is characterized in that the wellhead assembly ontology
(4) it is provided between surface pipe (2) BT sealing ring (10).
4. a kind of four-in-one body formula wellhead assembly according to any one of claims 1 to 3, which is characterized in that the table
It is successively arranged with the first protective casing (11), the second protective casing (12), oil pipe (13), ontology from outside to inside in layer casing (2)
The first protective casing hanger (14), the first protective casing hanger (14) and the first protective casing have been set on step (6)
(11) it connects, is provided with the first hanger through-hole, the first hanger through-hole and second side on the first protective casing hanger (14)
Through-hole connection；The first hanger step (15), the first hanger step (15) are provided on first protective casing hanger (14)
On set the second protective casing hanger (16), the second protective casing hanger (16) is connect with the second protective casing (12),
The second hanger through-hole is provided on second protective casing hanger (16), the second hanger through-hole is connected to third side through hole；
It is provided with the second hanger step (17) on second protective casing hanger (16), has set oil on the second hanger step (17)
Pipe hanger (18), boll-weevil hanger (18) are connect with oil pipe (13).
5. a kind of four-in-one body formula wellhead assembly according to claim 4, which is characterized in that first protective casing
It (11) is 95/8" protective casing, the second protective casing (12) are 7 " protective casing, oil pipe (13) are 31/2" oil pipe.
6. a kind of four-in-one body formula wellhead assembly according to claim 4, which is characterized in that the wellhead assembly ontology
(4) top is equipped with cover board (19), and cover board (19) is connect with boll-weevil hanger (18).
7. a kind of four-in-one body formula wellhead assembly according to claim 4, which is characterized in that the wellhead assembly ontology
(4) it is equipped on the first jackscrew (20), one end of the first jackscrew (20) holds out against the first protective casing hanger (14).
8. a kind of four-in-one body formula wellhead assembly according to any one of claims 1 to 3, which is characterized in that the well
Mouthful device noumenon (4) inner cavity is equipped with wearing bush (21), is provided with several drilling well fluid apertures on wearing bush (21), the first side through hole,
Second side through hole, third side through hole pass through drilling well fluid apertures and are connected to wearing bush (21) inner cavity, and wellhead assembly ontology is installed on (4)
Have the second jackscrew (22), one end of the second jackscrew (22) holds out against wearing bush (21).
9. a kind of four-in-one body formula wellhead assembly according to claim 8, which is characterized in that the wearing bush (21) is
133/8" wearing bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269324.XA CN109281629A (en) | 2018-10-29 | 2018-10-29 | A kind of four-in-one body formula wellhead assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269324.XA CN109281629A (en) | 2018-10-29 | 2018-10-29 | A kind of four-in-one body formula wellhead assembly |
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| CN109281629A true CN109281629A (en) | 2019-01-29 |
Family
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| CN201811269324.XA Pending CN109281629A (en) | 2018-10-29 | 2018-10-29 | A kind of four-in-one body formula wellhead assembly |
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| US20070169940A1 (en) * | 2006-01-26 | 2007-07-26 | Velco Gray Inc. | Tubing hanger and wellhead housing with mating tubing annulus passages |
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| CN208982001U (en) * | 2018-10-29 | 2019-06-14 | 四川宝石机械钻采设备有限责任公司 | A kind of four-in-one body formula wellhead assembly |
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Effective date of registration: 20201015 Address after: 618300 No. 86, South Second Section of Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Applicant after: SICHUAN BAOSHI MACHINERY DRILLING AND PRODUCTION EQUIPMENT Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 618300 No. 86, South Second Section of Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Applicant before: SICHUAN BAOSHI MACHINERY DRILLING AND PRODUCTION EQUIPMENT Co.,Ltd. |
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