CN107313748B - Wellhead assembly and its operating method - Google Patents
Wellhead assembly and its operating method Download PDFInfo
- Publication number
- CN107313748B CN107313748B CN201710397031.9A CN201710397031A CN107313748B CN 107313748 B CN107313748 B CN 107313748B CN 201710397031 A CN201710397031 A CN 201710397031A CN 107313748 B CN107313748 B CN 107313748B
- Authority
- CN
- China
- Prior art keywords
- wellhead assembly
- pipe nipple
- channel
- top connection
- shell
- 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.)
- Active
Links
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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Abstract
The invention discloses a kind of wellhead assembly and its operating methods, are related to oil-gas mining technical field, which includes: shell, has first passage in shell, are provided with the switching mechanism of control first passage opening and closing on the first pass；The top connection being connected with the shell has the second channel being connected with first passage in top connection, also has third channel and fourth lane in top connection, be provided with the second valve on third channel, be connected with pressure gauge in fourth lane；Partially be set in top connection lower end sets pipe nipple, it sets and forms annular space between pipe nipple and top connection, annular space is connected with third channel and fourth lane, setting has the through hole being connected with annular space on the side wall of pipe nipple, set on the inner wall of pipe nipple with closure part so that the lower end closed of annular space；The packer set outside pipe nipple is set.Wellhead assembly and its operating method in the application can complete more changing jobs for steam injection well head in the state of controllable.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of wellhead assembly and its operating method.
Background technique
In the development process to oil well, due to passing through the effect in exploitation for a long time and development process by high temperature,
Can all there are a certain number of steam injection well heads different degrees of damage occur every year, be located accordingly according to the degree of damage needs
Reason operation, processing operation generally may include the either direct replacement well head of the maintenances such as replacement valve.
But during replacing well head, since steam injection well bottom hole temperature (BHT) is higher, pressure is generally larger, pressure burst
Situation is more, higher in the operation process risk of replacement well head, needs thus a kind of for replacing the wellhead assembly of well head.
Summary of the invention
Currently, it is found by the applicant that the domestic specific purpose tool for replacing steam injection well head not yet, routine replacement steam injection shaft mouth operation
Need first to wash kill-job operation, not only result in heated oil reservoir in this way by cold damage and pollution, at the same also will increase operation at
This.And the variation of steam injection well bottom pressure is fast, even if having carried out washing kill-job operation, more renews the process of well head in the former well head of dismounting
In still have pressure runaway risk, for this purpose, there is an urgent need to a kind of for specially replacing the wellhead assembly of well head.
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one kind for the embodiment of the present invention
Wellhead assembly and its operating method can complete more changing jobs for steam injection well head in the state of controllable.
The specific technical solution of the embodiment of the present invention is:
A kind of wellhead assembly, comprising:
Shell, the shell is interior to have first passage, and the control first passage is provided on the first passage and is opened
The switching mechanism closed；
The top connection being connected with the shell has in the top connection second to be connected with the first passage logical
Road also has third channel and fourth lane in the top connection, is provided with the second valve on the third channel, and the described 4th
Pressure gauge is connected on channel；
Part is set in the pipe nipple that sets of the top connection lower end, and described set forms ring between pipe nipple and the top connection
Shape space, the annular space are connected with the third channel and the fourth lane, have on the side wall for setting pipe nipple
There is the through hole being connected with the annular space, has closure part so that the annular space on the inner wall for setting pipe nipple
Lower end closed；
The packer set outside pipe nipple is set, and the packer is located at the top of the through hole.
In a preferred embodiment, second valve is ball-and-seat, and the ball-and-seat can be led to by the third
Road is connected to the annular space direction.
In a preferred embodiment, the switching mechanism includes the valve seat and spool being arranged in first passage,
The spool is cock valve core.
In a preferred embodiment, the wellhead assembly further includes washing killing well joint, and the killing well joint includes
Ontology, has the runner extended along the vertical direction on the ontology, and the upper end of the ontology has the be connected to the runner
One opening, the side wall of the ontology have the second opening being connected to the runner.
In a preferred embodiment, the upper end of the top connection has external screw thread, has on the inner wall of the ontology
There is internal screw thread.
In a preferred embodiment, the first opening of the ontology is set on the shell, and described first opens
Sealing clamp is provided between mouth and the shell.
In a preferred embodiment, there is annular groove, in the annular groove on the side wall of the closure part
It is provided with sealing element.
In a preferred embodiment, the packer is Y211 type packer.
A kind of operating method according to above-mentioned wellhead assembly comprising following steps:
Under the wellhead assembly lower going-into-well and the lower end for setting pipe nipple of the wellhead assembly will be made to be connected with down-hole string
It connects；
The packer set outside pipe nipple is set to realize and be sealed to oil jacket annulus；
Steam injection well head is dismantled, and new steam injection well head is installed, passes through the pressure gauge in the fourth lane in the process
Observe pressure in oil jacket annulus；
It is installed after new steam injection well head and no pressure in oil jacket annulus is confirmed by the pressure gauge, then by the packing
Device deblocking；
The wellhead assembly is above mentioned after the wellhead assembly is mutually unloaded with the down-hole string.
In a preferred embodiment, when installing new steam injection well head, if passing through the pressure in the fourth lane
Power apparently observes burst pressure in oil jacket annulus, then opens second valve to the third channel and be passed through liquid, pass through institute
The first passage for stating shell recycles the liquid.
Technical solution of the present invention have it is following significant the utility model has the advantages that
Wellhead assembly in the application can observe oil by the pressure gauge in fourth lane when replacing steam injection well head
Burst pressure in annular space is covered, if it find that burst pressure in well.It on the one hand can be by the wellhead assembly in the application by pressure
Control in well, will not there is a situation where blowouts, so as to make a response in time to the fortuitous event in operation process, with drop
Low operating risk reduces engineering accident.If burst pressure is extremely serious in still further aspect well, still have to wash kill-job work
Industry, then can open second valve at once and be passed through liquid to the third channel and pass through the described first logical of the shell again
The mode that road recycles the liquid carries out reacting cycle and washes kill-job operation, so can in the case where not needing to connect other devices
It to carry out washing kill-job operation at once to oil well, can effectively save activity duration and cost in this way, improve replacement steam injection well head
Efficiency.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is the structural schematic diagram of the wellhead assembly in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram for washing killing well joint of the wellhead assembly in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram with the wellhead assembly for washing killing well joint in the embodiment of the present invention.
The appended drawing reference of the figures above:
1, shell；11, first passage；12, switching mechanism；121, valve seat；122, spool；2, top connection；21, second is logical
Road；22, third channel；23, fourth lane；3, the second valve；4, pressure gauge；5, pipe nipple is set；51, annular space；52, run through
Hole；53, closure part；531, annular groove；54, packer；6, killing well joint is washed；61, ontology；62, runner；63, the first opening；
64, the second opening；7, casing；8, down-hole string.
Specific embodiment
With reference to the drawings and the description of the specific embodiments of the present invention, details of the invention can clearly be understood.But
It is the specific embodiment of invention described herein, purpose for explaining only the invention, and cannot understand in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that based on any possible change of the invention
Shape, these are regarded as belonging to the scope of the present invention.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term " installation ", " connected ", " connection " shall be understood in a broad sense, example
Such as, mechanical connection or electrical connection be can be, the connection being also possible to inside two elements can be directly connected, and can also lead to
It crosses intermediary to be indirectly connected, for the ordinary skill in the art, can understand above-mentioned term as the case may be
Concrete meaning.Term as used herein " vertically ", " horizontal ", "upper", "lower", "left", "right" and similar table
It states for illustrative purposes only, is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
In order to avoid the risk of pressure runaway during removing former well head and more renewing well head, as far as possible controllable
More changing jobs for steam injection well head is completed under state, proposes a kind of wellhead assembly in this application, and Fig. 1 is in the embodiment of the present invention
The structural schematic diagram of wellhead assembly as shown in Figure 1, the wellhead assembly includes: shell 1 there is first passage 11 in shell 1,
The switching mechanism 12 that control first passage 11 is opened and closed is provided on first passage 11；The top connection being connected with valve body shell 1
2, there is in top connection 2 second channel 21 being connected with first passage 11, also there is third channel 22 and the 4th in top connection 2
Channel 23 is provided with the second valve 3 on third channel 22, is connected with pressure gauge 4 in fourth lane 23；Part is set in top connection
2 lower ends set pipe nipple 5, set formation annular space 51, annular space 51 and third channel 22 between pipe nipple 5 and top connection 2
It is connected with fourth lane 23, setting has the through hole 52 being connected with annular space 51 on the side wall of pipe nipple 5, set pipe nipple
With closure part 53 so that the lower end closed of annular space 51 on 5 inner wall；The packer 54 set outside pipe nipple 5 is set, is sealed
It is located at the top of through hole 52 every device 54.
Wellhead assembly in the application be carried out in removing steam injection string operation process using, removing steam injection pipe
In column operation process, it is big four, preventer that wellhead equipment is constituted at this time from bottom to top.If once finding in operation process
Well head, which goes wrong, to be replaced, then being first sitting in tubing string on preventer by elevator, is then turned off preventer half
Flashboard is sealed, then under the wellhead assembly lower going-into-well in the application and the lower end for setting pipe nipple 5 and the downhole tubular of wellhead assembly will be made
Column 8 is connected, then the packer 54 set outside pipe nipple 5 is set to realize and be sealed to oil jacket annulus.And then it dismantles
Steam injection well head, and new steam injection well head is installed, it is observed in oil jacket annulus by the pressure gauge 4 in fourth lane 23 in the process
Pressure.When installing new steam injection well head, if observing burst pressure in oil jacket annulus by the pressure gauge 4 in fourth lane 23
Power then opens the second valve 3 to third channel 22 and is passed through liquid, passes through 11 withdrawal liquid of first passage of shell 1.If do not sent out
In raw above-mentioned oil jacket annulus the case where burst pressure, then it is installed after new steam injection well head and oil jacket ring is confirmed by pressure gauge 4
No pressure in sky, then packer 54 is unsealed.Finally wellhead assembly will be above mentioned after wellhead assembly and the unloading of 8 phase of down-hole string.
Wellhead assembly in the application can be observed when replacing steam injection well head by the pressure gauge 4 in fourth lane 23
Burst pressure in oil jacket annulus, if it find that burst pressure in well.On the one hand it can will be pressed by the wellhead assembly in the application
Power control in well, will not there is a situation where blowouts, so as to make a response in time to the fortuitous event in operation process, with
It reduces operating risk, reduce engineering accident.If burst pressure is extremely serious in still further aspect well, still have to wash kill-job work
Industry can then open the second valve 3 to third channel 22 at once and be passed through 11 withdrawal liquid of first passage that liquid passes through shell 1 again
Mode carry out reacting cycle and wash kill-job operation, so in the case where not needing to connect other devices can at once to oil well into
Row washes kill-job operation, can effectively save activity duration and cost in this way, improves the efficiency of replacement steam injection well head.
In order to be better understood by the wellhead assembly in the application, it will be further explained and will be illustrated below.
As shown in Figure 1, having the first passage 11 extended along the vertical direction inside shell 1, first passage 11 runs through the shell
1 top and bottom of body are provided with the opening/closing machine for controlling the first passage 11 opening and closing in the inside of shell 1 on first passage 11
Structure 12.When wellhead assembly is not in and washes kill-job operation, switching mechanism 12 is in an off state so that first passage 11 disconnects.It opens
Closing mechanism 12 can be the spool 122 and valve seat 121 that the various valves of opening and closing can be achieved.In a kind of feasible embodiment,
Switching mechanism 12 includes the valve seat 121 and spool 122 being arranged in first passage 11, and valve seat 121 resists spool 122, spool 122
For cock valve core 122.Internal screw thread can be offered on the inner wall of 1 upper end of shell, to connect other devices.
As shown in Figure 1, top connection 2 is connected with shell 1, the lower end of top connection 2 offers external screw thread, top connection 2 it is upper
End offers internal screw thread, in mating connection by the external screw thread of the lower end of top connection 2 and the internal screw thread of the upper end of top connection 2.On
There is the second channel 21 being connected with first passage 11, second channel 21 extends along the vertical direction, when top connection 2 on connector 2
When being connected with shell 1, the second channel 21 of top connection 2 is connect with the first passage 11 of shell 1 so that the two is connected to.Top connection
Also there is third channel 22 and fourth lane 23 in 2.
As shown in Figure 1, being provided with the second valve 3 at the upper end of third channel 22, the second valve 3 can be to third channel 22
It is opened and closed.In a preferred embodiment, the second valve 3 is ball-and-seat, and ball-and-seat can be from third channel 22 to annular
The conducting of 51 direction of space, as shown in fig. 1, i.e., direction is connected from top to bottom, in this way, ball-and-seat begins when burst pressure in well
It is in close state, borehole pressure is controlled eventually effectively.And when carrying out washing kill-job effect, to third channel 22
Upper end by certain pressure inject liquid when, ball-and-seat can automatically open under the effect of the pressure.If occurred at this time
In well the case where burst pressure, the ball-and-seat in third channel 22 can close under the action of borehole pressure, so reduce industry
Risk.
As shown in Figure 1, setting is connected with pressure gauge 4 at the upper end of fourth lane 23, since fourth lane 23 passes through seat
The annular space 51 sealed between pipe nipple 5 and top connection 2, the through hole 52 set on the side wall of pipe nipple 5 can be with phases in oil jacket annulus
Connection, in this way, it can accurately measure the pressure in oil jacket annulus when replacing steam injection well head, to learn in oil jacket annulus
Whether the generation of burst pressure is had.
As shown in Figure 1, the upper end for setting pipe nipple 5 has screw thread, the lower end of top connection 2 has screw thread, set pipe nipple 5 with it is upper
It is mutually threadedly coupled between connector 2.For installation, more piece can be divided by setting pipe nipple 5, each section set pipe nipple 5 with it is another
Section is set mutually to be threadedly coupled between pipe nipple 5.Set between pipe nipple 5 and top connection 2 formation annular space 51, annular space 51 and the
Triple channel 22 is connected with fourth lane 23, and setting has the through hole 52 being connected with annular space 51 on the side wall of pipe nipple 5,
It sets on the inner wall of pipe nipple 5 with closure part 53 so that the lower end closed of annular space 51.It is arranged on the side wall of closure part 53
There is annular groove 531, is provided with sealing element in annular groove 531.The envelope of pipe nipple 5 is set when the lower end of top connection 2 is inserted into
When stifled portion 53, sealing element can effectively keep closure part 53 and set the leakproofness between pipe nipple 5.Specifically, the sealing
Part can be O-ring seal etc..
As shown in Figure 1, having the through hole 52 being connected with annular space 51 on the side wall for setting pipe nipple 5, setting
It is provided with packer 54 outside pipe nipple 5, the position of the sealer is located at the top of through hole 52.So when under wellhead assembly lower going-into-well
Afterwards, packer 54 is set oil jacket annulus is separated after, can be by underlying oil jacket annulus and the by through hole 52
Triple channel 22 is connected with fourth lane 23, and so later when burst pressure in well, pressure can be transferred to and be connected to the 4th
At pressure gauge 4 on channel 23.Meanwhile when carrying out washing kill-job operation, it is logical to third that the second valve 3 can be opened at once
Road 22 is passed through liquid and then passes through the through hole 52 and flows into the oil jacket annulus of 54 lower section of packer, then under liquid lower going-into-well,
Again through the opening reflux of down-hole string 8 into down-hole string 8, in the second channel 21 of liquid upper up-flow to top connection 2, finally
The switching mechanism 12 opened in shell 1 is flowed out by the first passage 11 in shell 1, completes to wash kill-job operation through the above way.
It in a preferred embodiment, can be Y211 type packer setting the packer 54 being arranged outside pipe nipple 5
54, can be under wellhead assembly lower going-into-well using the packer 54 of the model after, can will be infused by way of put-on and delegated
Steam pipe column is set on casing 7, the packer 54 so completed set operation do not need using it is hydraulic so that packer 54 into
Row is set, and enormously simplifies the operating process set to packer 54.
In a preferred embodiment, Fig. 2 is the knot for washing killing well joint 6 of the wellhead assembly in the embodiment of the present invention
Structure schematic diagram, as shown in Fig. 2, wellhead assembly can also include washing killing well joint 6, killing well joint includes ontology 61, on ontology 61
With the runner 62 extended along the vertical direction, the upper end of ontology 61 has the first opening 63 being connected to runner 62, ontology 61
Side wall has the second opening 64 being connected to runner 62.The upper end of top connection 2 has external screw thread, has on the inner wall of ontology 61 interior
Screw thread, top connection 2 are connected by screw thread with ontology 61.First opening 63 of ontology 61 is set on shell 1, the first opening 63
It is provided with sealing clamp between shell 1, guarantees the airtightness between the first opening 63 and shell 1 by sealing clamp.?
Hoop can be welded at second opening 64, Fig. 3 is the structure with the wellhead assembly for washing killing well joint 6 in the embodiment of the present invention
Schematic diagram so conveys liquid as shown in figure 3, this is washed killing well joint 6 and is screwed in top connection 2 when needing to wash kill-job operation
Pipeline can be directly connected to the hoop of the second opening 64 and inject liquid into third channel 22 will pass through the second valve 3.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.Above-described embodiment is only
Illustrate technical concepts and features of the invention, its object is to those skilled in the art can understand the contents of the present invention
And implement accordingly, it is not intended to limit the scope of the present invention.Equivalence changes made by all Spirit Essences according to the present invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of wellhead assembly characterized by comprising
Shell, the shell is interior to have first passage, and the control first passage opening and closing is provided on the first passage
Switching mechanism；
The top connection being connected with the shell has the second channel being connected with the first passage in the top connection,
Also there is third channel and fourth lane in the top connection, be provided with the second valve, the four-way on the third channel
Pressure gauge is connected on road；
Part is set in the pipe nipple that sets of the top connection lower end, and described set forms annular sky between pipe nipple and the top connection
Between, the annular space is connected with the third channel and the fourth lane, on the side wall for setting pipe nipple have with
The through hole that the annular space is connected has closure part so that under the annular space on the inner wall for setting pipe nipple
End seal is closed；
The packer set outside pipe nipple is set, and the packer is located at the top of the through hole.
2. wellhead assembly according to claim 1, which is characterized in that second valve is ball-and-seat, the ball-and-seat
It can be connected from the third channel to the annular space direction.
3. wellhead assembly according to claim 1, which is characterized in that the switching mechanism includes being arranged in first passage
Valve seat and spool, the spool be cock valve core.
4. wellhead assembly according to claim 1, which is characterized in that the wellhead assembly further includes washing killing well joint, institute
Stating and washing killing well joint includes ontology, has the runner that extends along the vertical direction on the ontology, the upper end of the ontology have with
First opening of the runner connection, the side wall of the ontology have the second opening being connected to the runner.
5. wellhead assembly according to claim 4, which is characterized in that the upper end of the top connection has external screw thread, described
There is internal screw thread on the inner wall of ontology.
6. wellhead assembly according to claim 4, which is characterized in that the first opening of the ontology is set in the shell
On, sealing clamp is provided between first opening and the shell.
7. wellhead assembly according to claim 1, which is characterized in that there is annular groove on the side wall of the closure part,
Sealing element is provided in the annular groove.
8. wellhead assembly according to claim 1, which is characterized in that the packer is Y211 type packer.
9. a kind of operating method of wellhead assembly according to claim 1, which comprises the following steps:
Under the wellhead assembly lower going-into-well and the lower end for setting pipe nipple of the wellhead assembly will be made to be connected with down-hole string；
The packer set outside pipe nipple is set to realize and be sealed to oil jacket annulus；
Steam injection well head is dismantled, and new steam injection well head is installed, is observed in the process by the pressure gauge in the fourth lane
Pressure in oil jacket annulus；
It is installed after new steam injection well head and no pressure in oil jacket annulus is confirmed by the pressure gauge, then by the packer solution
Envelope；
The wellhead assembly is above mentioned after the wellhead assembly is mutually unloaded with the down-hole string.
10. the operating method of wellhead assembly according to claim 9, which is characterized in that when installing new steam injection well head,
If observing burst pressure in oil jacket annulus by the pressure gauge in the fourth lane, second valve is opened to described
Third channel is passed through liquid, recycles the liquid by the first passage of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710397031.9A CN107313748B (en) | 2017-05-31 | 2017-05-31 | Wellhead assembly and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710397031.9A CN107313748B (en) | 2017-05-31 | 2017-05-31 | Wellhead assembly and its operating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107313748A CN107313748A (en) | 2017-11-03 |
| CN107313748B true CN107313748B (en) | 2019-06-11 |
Family
ID=60183524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710397031.9A Active CN107313748B (en) | 2017-05-31 | 2017-05-31 | Wellhead assembly and its operating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313748B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035692B (en) * | 2017-12-05 | 2020-05-08 | 中国石油天然气集团公司 | Device for limiting a tubing string during blowout and wellhead control method |
| CN108252681B (en) * | 2017-12-27 | 2020-11-06 | 中国石油天然气股份有限公司 | Steam channeling prevention and control device and method for thermal production well operation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246128Y (en) * | 2008-06-24 | 2009-05-27 | 胜利油田胜机石油装备有限公司 | High temperature and high pressure thermal recovery well head apparatus |
| CN202266239U (en) * | 2011-10-08 | 2012-06-06 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Special check valve for thermal recovery wellhead |
| CN103670329A (en) * | 2013-08-30 | 2014-03-26 | 中国石油天然气集团公司 | Tube-in-tube thickened oil steam wellhead device |
| CN203626663U (en) * | 2013-08-30 | 2014-06-04 | 中国石油天然气集团公司 | Device for replacing SAGD steam injection wellhead gate valve under pressure |
| CN204691753U (en) * | 2015-05-07 | 2015-10-07 | 中国石油化工股份有限公司 | Note adopts the no killing well well head operating equipment of integrated thermal recovery technology |
| CN205225149U (en) * | 2015-12-02 | 2016-05-11 | 中国石油天然气股份有限公司 | Double -barrelled notes vapour wellhead assembly of horizontal well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1990505B1 (en) * | 2003-05-31 | 2010-09-22 | Cameron Systems (Ireland) Limited | Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
-
2017
- 2017-05-31 CN CN201710397031.9A patent/CN107313748B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246128Y (en) * | 2008-06-24 | 2009-05-27 | 胜利油田胜机石油装备有限公司 | High temperature and high pressure thermal recovery well head apparatus |
| CN202266239U (en) * | 2011-10-08 | 2012-06-06 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Special check valve for thermal recovery wellhead |
| CN103670329A (en) * | 2013-08-30 | 2014-03-26 | 中国石油天然气集团公司 | Tube-in-tube thickened oil steam wellhead device |
| CN203626663U (en) * | 2013-08-30 | 2014-06-04 | 中国石油天然气集团公司 | Device for replacing SAGD steam injection wellhead gate valve under pressure |
| CN204691753U (en) * | 2015-05-07 | 2015-10-07 | 中国石油化工股份有限公司 | Note adopts the no killing well well head operating equipment of integrated thermal recovery technology |
| CN205225149U (en) * | 2015-12-02 | 2016-05-11 | 中国石油天然气股份有限公司 | Double -barrelled notes vapour wellhead assembly of horizontal well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107313748A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725330B (en) | Drilling-and-plugging-free well fixing method and tool | |
| CN107313748B (en) | Wellhead assembly and its operating method | |
| CN104775802A (en) | Separate-layer fracturing sand control string for thermal production well and sand control method thereof | |
| BR122020005571B1 (en) | apparatus and method for isolating a first zone from a second zone in an underground well bore | |
| CN104074485A (en) | Horizontal well leakage-proof rotational flow sand-washing device and sand-washing technology thereof | |
| CN108894761A (en) | A kind of one-trip string seperated layer water injection sand control back washing device and method | |
| US9988884B2 (en) | Annular screen communication system | |
| CN203626722U (en) | Sealing and isolating type cementing device | |
| CN206458437U (en) | A kind of bridge-type eccentric separate layer water injection string | |
| CN206554877U (en) | A kind of well-flushing pressure relief device for dispensing well | |
| CN102720471A (en) | Safety valve of pressure control water injection well | |
| CN204646205U (en) | Thermal production well separate-layer fracturing sand control string | |
| CN202520284U (en) | Gravel filling backwashing valve | |
| CN106761710A (en) | A kind of horizontal well and directional well set and test envelope integrated technique | |
| CN105804693A (en) | Annulus safety valve | |
| CN104153740B (en) | Differential oil jacket coupling cock | |
| CN104213867B (en) | A kind of multi-functional Water well packer | |
| CN100412313C (en) | Plug-free cement filling method for well fixing | |
| CN108252681A (en) | Thermal recovery well operations channeling prevention and control device and its method | |
| CN205330617U (en) | Novel annular space relief valve | |
| CN103452524A (en) | Electrically-flushable packer and electrically-flushable insert seal for flooding well | |
| CN204060575U (en) | A kind of horizontal well lost circulation prevention cyclone sand washing device device | |
| CN209483229U (en) | Completion tubular column and production system | |
| CN209430180U (en) | It is layered de-plugging tubular column structure | |
| CN203978369U (en) | Combined type annular damper blowout hookup |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |