CN109488239A - Underwater well head casing hanger and seal assembly one way running tool and method - Google Patents
Underwater well head casing hanger and seal assembly one way running tool and method Download PDFInfo
- Publication number
- CN109488239A CN109488239A CN201910041915.XA CN201910041915A CN109488239A CN 109488239 A CN109488239 A CN 109488239A CN 201910041915 A CN201910041915 A CN 201910041915A CN 109488239 A CN109488239 A CN 109488239A
- Authority
- CN
- China
- Prior art keywords
- seal assembly
- running tool
- casing hanger
- upper body
- well head
- Prior art date
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/117—Detecting leaks, e.g. from tubing, by pressure testing
Abstract
The invention discloses a kind of underwater well head casing hangers and seal assembly one way running tool and method, including the upper body and lower body being connected with each other, mandrel through inside upper body and lower body, and the driving body between upper body and lower body are additionally provided with connector in upper body.A kind of easy to operate, the reliable underwater well head casing hanger of effect and seal assembly one way running tool have been made by adopting the above technical scheme.The same tool multiple functions, preferably meet operation effectiveness.
Description
Technical field
The present invention relates to offshore oil operation drilling applications, in particular to a kind of underwater well head casing hanger and sealing
Assembly one way running tool and method.
Background technique
Wellhead equipment used in offshore oil operation drilling well, which can be used, much fetches and delivers tool, the function and knot of these tools
Structure directly influences the operating efficiency of drilling efficiency and platform, and in the high cost of deepwater work, operating efficiency is very heavy
It wants, these equipment are mainly provided by offshore company at present, and the equipment performance different structure of each company is different, to the effect of operation
Rate is all different, and with further going deep into for deep water petroleum exploration and development, operating water depth is deeper and deeper, to the efficiency requirements of operation
With regard to higher and higher, thus it is also just higher and higher to the installation of oil equipment and tool demands used in recycling operation, in the past
Operation process used in tool be that each tool has single exclusive function mostly, to realize that different functions will
Using different tools, and the number of operation is increased, reduce the efficiency of operation, increases the cost of operation.
Therefore easy to operate, the reliable underwater well head casing hanger of effect of one kind and seal assembly one way is needed to be sent into work
Tool.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of easy to operate, the reliable underwater well head of effect and is hung with casing
Device and seal assembly one way running tool and method.
Casing hanger and seal assembly one way running tool of one of the present invention for underwater well head, including each other
Connected upper body and lower body, the mandrel through inside upper body and lower body, and be located at upper body and lower body it
Between driving body；Connector is additionally provided in upper body, further includes:
Supporting body, the supporting body are installed on upper body and are provided with outer ring seal and support fixture block, the support fixture block
Positioned at the bottom of the supporting body；
Ontology is carried, the carrying ontology is installed on lower body and is provided with the lock for hanging external casing hanger
Tight ring,
Drive pin, the drive pin are set in retaining ring and connect with driving body；And
The righting sleeve outside upper body is installed on to be shorted with the load-bearing for being installed on lower body bottom.
In above scheme, Sealing is provided between the mandrel and upper body.
In above scheme, further includes:
Shear pin, for hanging external seal assembly；
Thrust bush and upper lock ring, the thrust bush are set on upper lock ring, and sealing surface is provided with outside the thrust bush.
In above scheme, the upper lock ring is connected with external seal assembly.
In above scheme, the shear pin is installed on upper body.
Utilize a kind of casing hanger for underwater well head described in any of the above embodiments and seal assembly one way feeding side
Method, comprising:
S1: the tool of will be fed into is transferred to target well head；
S2: after the completion of decentralization, by support fixture block by upper body and lower body mutually locking, and pass through upper body and lower
Body is played a supporting role；
S3: circulation cement operations are carried out；
S4: after completing circulation cement operations, rotation process is carried out to running tool, and will support fixture block indentation support card slot
Interior, so that upper body and lower body lose supporting role, and then under the action of drilling tool, seal assembly is fast by upper body drive
Speed decentralization, until transferring seal assembly to the position of casing hanger；
S5: whether in place to judge the seal assembly being sent by running tool；
S6: it is to be confirmed in place after, complete the setting of seal assembly；
S7: whether detection seal assembly is correctly installed in place；
S8: after qualification to be tested, rotation process is carried out to running tool, so that running tool is released from casing hanger
It puts, then will be fed into tool again and put back to origin-location, and close running tool annulus；And then suppressed from running tool annulus,
Upside spraying-preventing system is closed, and sealing is realized by the oral sealing surface cooperation of outer ring seal and high-pressure well in downside, and inner seal is short
It connects and realizes sealing on the inside of running tool upper body, the one way for so far completing casing hanger and seal assembly is sent into.
In above scheme, in the S1, in decentralization process, running tool is synchronous with casing hanger with seal assembly
High-pressure well into target well head is oral interior, and when the seat hanging platform rank of casing hanger arrives at the oral interior step of high-pressure well,
Stop lowering operation.
In above scheme, in the S6, it is to be confirmed in place after, close ram block, and to running tool annulus carry out
Suppress so that running tool it is oral with high-pressure well under the action of peripheral seal sealing ring it is sealed against one another, running tool at this time
The inside of upper body and the Sealing of lower body also achieve sealing；Simultaneously as the effect of pressure, the thrust of upper body
Sleeve will push the upper lock ring of seal assembly, and by seal assembly lock to high-pressure well it is oral with above casing hanger, in turn
Complete the setting of seal assembly.
In above scheme, in the S7, specifically used promotion running tool simultaneously closes running tool annulus, is tested.
The advantages and beneficial effects of the present invention are: the present invention provides a kind of easy to operate, reliable underwater well head of effect
With casing hanger and seal assembly one way running tool and method.Tool can be sheet up and down using the support fixture block of upper lower body
Body carries out positioning and locking, and provides biggish fluid channel in circulation well cementation effect, supports fixture block can be fast in setting operation
Speed push-in card slot in, thus realize upper body impact decentralization, it is easier to seal assembly is installed in place.It can be incomplete
In the case where release tool, pressure testing individually is carried out to test seal assembly installation effect, to avoid other to seal assembly
Checked operation.Running tool directly can carry out pressure testing to spraying-preventing system after complete release, save fetching and delivering for pressure test tool
Time.The same tool multiple functions, preferably meet operation effectiveness.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention one；
Fig. 2 is structural schematic diagram two of the invention；
Fig. 3 is detection position view one of the invention；
Fig. 4 is detection position view two of the invention.
In figure: 1, upper body 2, lower body 3, connector 4, load-bearing are shorted
5, mandrel 6, driving body 7, upper Sealing 8, righting sleeve
9, supporting body 10, outer ring seal 11, support fixture block 12, carrying ontology
13, retaining ring 14, shear pin 15, seal assembly 16, casing hanger
17, upper lock ring 18, thrust bush 19, sealing surface 20, drive pin
21, well head head 22, seat hanging platform rank 23, interior step 24, seal assembly step
25, top stage
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
As shown in Figure 1 and Figure 2, the present invention is that a kind of casing hanger for underwater well head and seal assembly one way are sent into
Tool, the mandrel 5, Yi Jiwei including the upper body 1 and lower body 2 being connected with each other, through inside upper body 1 and lower body 2
Driving body 6 between upper body 1 and lower body 2；Connector 3 is additionally provided in upper body 1, further includes:
Supporting body 9, supporting body 9 are installed on upper body 1 and are provided with outer ring seal 10 and support fixture block 11, support fixture block 11
Positioned at the bottom of supporting body 9；
Ontology 12 is carried, carrying ontology 12 is installed on lower body 2 and is provided with for hanging external casing hanger 16
Retaining ring,
Drive pin 20, drive pin 20 are set in retaining ring 13 and connect with driving body 6；And it is installed on outside upper body 1
Righting sleeve 8 and be installed on 2 bottom of lower body load-bearing be shorted 4.
Sealing 7 is provided between mandrel 5 and upper body 1.
In above scheme, further includes:
Shear pin 14, for hanging external seal assembly 15；
Thrust bush 18 and upper lock ring 17, thrust bush 18 are set on upper lock ring 17, and sealing is provided with outside thrust bush 18
Face 19.
Upper lock ring 17 is connected with external seal assembly 15.Shear pin 14 is installed on upper body 1.
This tool be mainly used to be sent into casing hanger, ring packing assembly and to ring packing assembly it is setting with lock
Tightly, but also pressure testing can be carried out to spraying-preventing system.The same tool realizes multiple functions, reduces the number for tool of fetching and delivering, can
Operating efficiency is improved to substantially reduce operating cost.
As shown in Fig. 2, seal assembly 15 passes through shear pin 14 is suspended on and send during being sent into casing hanger with seal assembly
Enter in the upper body 1 of tool, casing hanger 16 is suspended in the lower body 2 of running tool by retaining ring 13, is let off under
Running tool is under seal assembly 15 and 16 Synchronous Radio of casing hanger and in entrance well head head 21 in journey.Work as casing hanger
It is entire to be sent into tubing string i.e. in place, so that it may according to drilling well when 16 seat hanging platform rank 22 is sat on the interior step 23 of high-pressure well oral 101
Operation carries out circulation cement operations.The upper body 1 of tool is by supporting fixture block 11 to lock together with lower body 2 at this time, and supports
Upper body 1 and lower body 2 rotate running tool after recycling well cementing operation, so that the support indentation support card slot of fixture block 11
Interior, upper body 1 and lower body 2 lose supporting role, and under drilling tool effect, upper body 1 drives seal assembly 15 to transfer rapidly, and
Seal assembly 15 is sent to the position of casing hanger 16.The top stage of seal assembly step 24 and casing hanger at this time
25 are positioned, and can determine whether in place tool is sent into seal assembly by the position of calculating instrument.Confirmation is closed afterwards in place
Ram block suppresses tool annular space, and tool is realized under the action of outer ring seal 10 with the sealing surface 19 of well head head 21
Sealing, while the inside of tool upper body 1 and upper Sealing 7 also realize sealing.The thrust of upper body 1 under the effect of the pressure
Sleeve 18 pushes the upper lock ring 17 of seal assembly 15, and seal assembly 15 is locked to above well head head 21 and casing hanger 16,
This single stepping just completes the setting of seal assembly.
After completing 15 setting operation of seal assembly, in order to detect whether seal assembly is correctly installed in place, drilling tool is promoted,
Running tool is promoted to position as shown in Figure 3, and closes annular space and is tested.If after test is all qualified, we can be with
Running tool is rotated, running tool is discharged from casing hanger, running tool seat is then returned to original position again,
And annular space is closed as shown in figure 4, suppressing from annular space, upside spraying-preventing system is closed, and downside passes through outer ring seal 10 and well head head 21
The cooperation of sealing surface 19 realize sealing, upper Sealing 7 is sealed with realizing on the inside of running tool upper body 1, in this way we
Pressure testing is carried out to entire spraying-preventing system.This tool we just completed during primary be sent into and be sent into seal assembly casing
The setting operation of hanger and seal assembly and pressure testing operation to blowout preventer system.The time of operation is greatly saved, mentions
The high efficiency of operation.
Tool combines multiple functions in one, and operation is relatively simple to be practically applicable to deepwater drilling and completion, especially gravity
The setting seal assembly of formula is installed more reliable using the impact force of upper lower body.Tool peripheral seal is on the one hand using upper and lower
Block, which squeezes, realizes high pressure sealing, and sealing, which will not protrude, during normal be sent into reduces abrasion.The sealing of entire periphery was both
Pressure lock sealing assembly may be implemented, while high-potting can also be carried out to blowout preventer system.Under the mandrel of tool utilizes
The weight of the entire casing string of load-bearing connector load-bearing, the shadow that upper body suspension seal assembly will not be squeezed etc. during feeding
It rings, preferably protects seal assembly.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of casing hanger for underwater well head and seal assembly one way running tool, including the upper body being connected with each other
And lower body, the mandrel through inside upper body and lower body, and the driving body between upper body and lower body；On
Connector is additionally provided on ontology, which is characterized in that further include:
Supporting body, the supporting body are installed on upper body and are provided with outer ring seal and support fixture block, and the support fixture block is located at
The bottom of the supporting body；
Ontology is carried, the carrying ontology is installed on lower body and is provided with the locking for hanging external casing hanger
Ring,
Drive pin, the drive pin are set in retaining ring and connect with driving body；And
The righting sleeve outside upper body is installed on to be shorted with the load-bearing for being installed on lower body bottom.
2. a kind of casing hanger for underwater well head according to claim 1 and seal assembly one way running tool,
It is characterized in that, being provided with Sealing between the mandrel and upper body.
3. a kind of casing hanger for underwater well head according to claim 1 and seal assembly one way running tool,
It is characterized by further comprising:
Shear pin, for hanging external seal assembly；
Thrust bush and upper lock ring, the thrust bush are set on upper lock ring, and sealing surface is provided with outside the thrust bush.
4. a kind of casing hanger for underwater well head according to claim 3 and seal assembly one way running tool,
It is characterized in that, the upper lock ring is connected with external seal assembly.
5. a kind of casing hanger for underwater well head according to claim 3 and seal assembly one way running tool,
It is characterized in that, the shear pin is installed on upper body.
6. utilizing a kind of casing hanger for underwater well head of any of claims 1-5 and seal assembly one way
Feeding method characterized by comprising
S1: the tool of will be fed into is transferred to target well head；
S2: it after the completion of decentralization, by support fixture block by upper body and lower body mutually locking, and is risen by upper body and lower body
To supporting role；
S3: circulation cement operations are carried out；
S4: after completing circulation cement operations, carrying out rotation process to running tool, and will support in fixture block indentation support card slot,
So that upper body and lower body lose supporting role, and then under the action of drilling tool, seal assembly is rapid by upper body drive
Decentralization, until transferring seal assembly to the position of casing hanger；
S5: whether in place to judge the seal assembly being sent by running tool；
S6: it is to be confirmed in place after, complete the setting of seal assembly；
S7: whether detection seal assembly is correctly installed in place；
S8: after qualification to be tested, rotation process is carried out to running tool, so that running tool is discharged from casing hanger, so
It will be fed into tool again afterwards and put back to origin-location, and close running tool annulus；And then suppressed from running tool annulus, upside is anti-
Spray system is closed, and sealing is realized by the oral sealing surface cooperation of outer ring seal and high-pressure well in downside, and inner seal is shorted and send
Enter and realize sealing on the inside of tool upper body, the one way for so far completing casing hanger and seal assembly is sent into.
7. a kind of casing hanger for underwater well head according to claim 6 and seal assembly one way feeding method,
It is characterized in that, in decentralization process, running tool enters target with seal assembly is synchronous with casing hanger in the S1
In the high-pressure well of well head is oral, and when the seat hanging platform rank of casing hanger arrives at the oral interior step of high-pressure well, stop decentralization
Operation.
8. a kind of casing hanger for underwater well head according to claim 6 and seal assembly one way feeding method,
It is characterized in that, in the S6, it is to be confirmed in place after, close ram block, and suppress to running tool annulus so that
Running tool sealing ring oral with high-pressure well under the action of peripheral seal is sealed against one another, at this time the upper body of running tool
The Sealing of inside and lower body also achieves sealing；Simultaneously as the effect of pressure, the thrust bush of upper body be will push
The upper lock ring of seal assembly, and by seal assembly lock to high-pressure well it is oral with casing hanger above, and then it is total to complete sealing
At it is setting.
9. a kind of casing hanger for underwater well head according to claim 6 and seal assembly one way feeding method,
It is characterized in that, specifically used promotion running tool simultaneously closes running tool annulus in the S7, tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041915.XA CN109488239A (en) | 2019-01-16 | 2019-01-16 | Underwater well head casing hanger and seal assembly one way running tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041915.XA CN109488239A (en) | 2019-01-16 | 2019-01-16 | Underwater well head casing hanger and seal assembly one way running tool and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488239A true CN109488239A (en) | 2019-03-19 |
Family
ID=65714780
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041915.XA Pending CN109488239A (en) | 2019-01-16 | 2019-01-16 | Underwater well head casing hanger and seal assembly one way running tool and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017109A (en) * | 2019-04-28 | 2019-07-16 | 宝鸡石油机械有限责任公司 | A kind of long-range hydraulically-controlled type boll-weevil hanger tripping in recycling tool |
| CN112282681A (en) * | 2020-10-27 | 2021-01-29 | 中国石油大学(华东) | Casing hanger and sealing assembly lowering tool |
| CN116201479A (en) * | 2023-01-05 | 2023-06-02 | 中海石油(中国)有限公司海南分公司 | Method for closing and running casing |
-
2019
- 2019-01-16 CN CN201910041915.XA patent/CN109488239A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017109A (en) * | 2019-04-28 | 2019-07-16 | 宝鸡石油机械有限责任公司 | A kind of long-range hydraulically-controlled type boll-weevil hanger tripping in recycling tool |
| CN112282681A (en) * | 2020-10-27 | 2021-01-29 | 中国石油大学(华东) | Casing hanger and sealing assembly lowering tool |
| CN116201479A (en) * | 2023-01-05 | 2023-06-02 | 中海石油(中国)有限公司海南分公司 | Method for closing and running casing |
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