CN110107246A - A kind of oil and gas wellhead and casing head integrated apparatus - Google Patents
A kind of oil and gas wellhead and casing head integrated apparatus Download PDFInfo
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- CN110107246A CN110107246A CN201910292228.5A CN201910292228A CN110107246A CN 110107246 A CN110107246 A CN 110107246A CN 201910292228 A CN201910292228 A CN 201910292228A CN 110107246 A CN110107246 A CN 110107246A
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- 230000007246 mechanism Effects 0.000 claims abstract description 27
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- 239000007924 injection Substances 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 17
- 241000254175 Anthonomus grandis Species 0.000 claims abstract description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
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- 239000007789 gas Substances 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000007789 sealing Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 238000010793 Steam injection (oil industry) Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
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- 238000012423 maintenance Methods 0.000 description 4
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- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- 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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/0422—Casing heads; Suspending casings or tubings in well heads a suspended tubing or casing being gripped by a slip or an internally serrated member
-
- 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
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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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)
- Geophysics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a kind of casing heads and oil and gas wellhead integrated apparatus, including pedestal and the casing head ontology being set on the base and the slips being arranged on casing head ontology, protective casing hanger and boll-weevil hanger, the two sides of described sleeve pipe head ontology are symmetrically arranged with balance mechanism, and the balance mechanism is between slips and protective casing hanger and between protective casing hanger and boll-weevil hanger；The balance mechanism includes equalizing main and the flange head being arranged on equalizing main, pressure safety viewer, shield pressure valve, pressure gauge, perfusion valve and injection pressure table, is provided with lateral pressure relief mechanism between the perfusion valve and shield pressure valve.It is of the invention novel in design; it is simple and reasonable for structure; can not only pressure gauge on effective protection equalizing main, and ftercompction can be carried out in the higher progress pressure release of annular space pressure and when annular space pressure is too low, and help to mend the construction operations such as crowded mud, monitoring and filling equilibrium liquid.
Description
Technical field
The present invention relates to oil-gas casing header domain more particularly to a kind of casing heads and oil and gas wellhead integrated apparatus.
Background technique
Casing head is used to the well head of fixed drilling well, wellhead casing pipe column is connected, to support protective casing and oil reservoir set
The gravity of pipe seals the annular space between each layer pipe, and to install preventer, tubing head, production tree provides transition connection, and leads to
Two side ports on casing head ontology are crossed, can carry out mending the construction operations such as crowded mud, monitoring and filling equilibrium liquid.Casing head is general
It is made of 35 or 42 chrome molybdenum high-quality alloy steels.Casing hanger is also set up in casing head, to hang the casing of dimension
Column, and seal annular clearance.Preventer group is filled thereon.After oil well completion, production tree is then installed on casing head.
Application No. is the utility model patents of CN201820597197.5 for the prior art, disclose a kind of for petroleum recovering
The ready-package casing head of well head, including casing head ontology, hanger, one group of jackscrew, flange balance gate valve, pressure gauge, shut-off valve,
One group of greasing mouth and one group of bleed outlet, the hanger are arranged on the inner wall of casing head ontology, and the jackscrew is disposed radially
On casing head ontology, and jackscrew may pass through the inner wall of casing head ontology and be bonded with hanger, and the flange balance gate valve is set
It sets in the outside of casing head ontology, flange balance end of the gate valve far from casing head ontology is arranged in the pressure gauge, and presses
Power table is equipped with shut-off valve, and the greasing mouth and bleed outlet are arranged radially in the lower end of casing head ontology, described sleeve pipe head
The upper surface of ontology is equipped with one group of gasket annular groove.The utility model is by being arranged one group of sealing in the upper surface of casing head ontology
Gasket ring slot can improve the sealing performance between casing head joint face when being installed, this casing head performance is stablized, peace
It fills high-efficient.
Application No. is the utility model patents of CN201520837895.4 for the prior art, disclose a kind of oil gas casing
Head, including casing head ontology and hanger, the hanger are set in casing head ontology, and described sleeve pipe head ontology includes upper layer
Casing head component and lower layer's casing head component, the hanger are overall structure, are provided between hanger casing head ontology close
Sealing assembly operates position that is more convenient, and sealing needs by the way that integrally-built hanger is arranged during installing hanger
Reduction is set, since sealing station is reduced, and is sealed provided with seal assembly, so that the ring between upper and lower level casing head component
Shape space sealing effect is preferable, solves the annular space sealing effect between existing oil gas Casing head of borehole upper and lower level casing head component
Fruit is bad, and hanger installs cumbersome technical problem, provide a kind of hanger it is easy for installation and with excellent sealing oil
Gas well casing head.
Application No. is the utility model patents of CN200920013831.7 for the prior art, disclose a kind of multifunctional well head dress
It sets and production tree, by big and small sheath head, gate valve, tubing head, tubing head reducing joint, preventer, four-way, polished rod sealer, ball
Valve, check-valves, hammering union, threeway composition: casing head and small casing head, small casing head and tubing head are that casing threads connects greatly
It connects, gate valve is to be bolted with tubing head, tubing head and tubing head reducing joint, and tubing head reducing joint and preventer are prevented
Spray apparatus and four-way, four-way and polished rod sealer, four-way and ball valve, ball valve and check-valves, check-valves and hammering union, hammering union
It is to be threadedly coupled with threeway；Double-sleeve head, double containment composite structure are equipped in wellhead assembly lower end；It is set in production tree part
There is double ram type preventer.The utility model solves well head existing in the prior art and has a single function, and can not achieve suspension up and down
And the problem of blowout prevention.The utility model can be widely used for Field Steam steam oil production operation.
Application No. is the utility model patents of CN200920013830.2 for the prior art, disclose a kind of novel wellhead
And production tree, by casing casing, slips hanger, tubing head four-way, gate valve, boll-weevil hanger, middle steel ring, adapter flange,
Preventer, sealer, shut-off valve composition: slips hanger seat on casing casing, boll-weevil hanger seat is in tubing head four-way
On fixed with jackscrew, boll-weevil hanger and adapter flange use in steel ring sealing, be bolted, casing casing and tubing head four
Logical, tubing head four-way and gate valve, adapter flange and preventer, preventer and sealer, preventer and shut-off valve are connected with bolt
It connects；Casing casing and slips hanger constitute slip-type high temperature CASINGHEAD STRUCTURE；It is equipped between tubing head and adapter flange
Middle steel ring and metal gasket ring sealing structure；Long-plunger preventer is equipped in production tree part.The utility model solves existing skill
The complete well of routine thermal production well present in art is simple, does not have the problem of blowout prevention function.It can be widely used for viscous crude exploitation steam and gulps down
It spits in operation.
Application No. is the utility model patents of CN201220038325.5 for the prior art, disclose drilling completion integral type oil
Casing head is applied to well mouth of oil well.There is two stage conical step on the center hole wall of tubular wellhead assembly ontology, on top
It is setting in biggish type conical bench to have an outer wall for the boll-weevil hanger of cone shape；At the lesser type conical bench seat of honour in lower part
Feng Youyi outer wall is the protective casing hanger of cone shape；One is fixed with by screw in the lower end of wellhead assembly ontology
The slips of circular ring shape, the center-hole diameter of falling slips are greater than the outer diameter of protective casing；Pass through spiral shell at the top of wellhead assembly ontology
Bolt is fixed with production tree cover board flange；It is symmetrical on wellhead assembly body wall that there are four transverse holes；In the outer of wellhead assembly ontology
It is on wall and opposite with four transverse holes, it is respectively fixed with a bump joint.Effect is: replacement well is not needed after disposable installation
Mouth device and change ground installation, so that it may complete the complete Jing Te of the formation testings such as drilling well, well cementation and testing pressure down hole, well-flushing, fracture acidizing
Kind operation.
Application No. is the utility model patents of CN201220015997.4 for the prior art, disclose a kind of metal sealed heat
Casing head is adopted, it is suitable for the exploitation of oil-field thick-oil thermal production well.The utility model is by hanger (6), casing casing (7) group
At a upper flange (2) is added on casing casing (7) top, upper flange (2) is equipped with a top connection (1), top connection
(1) coupling with thermal recovery well head device bottom flange, upper flange (2) lower part is tubular structure, it is inserted into casing casing (7) top,
Hanger (6) upper end outer diameter has multiple sealing rings (5), and it is close that the inner hole (3) of sealing ring (5) and upper flange (2) cooperatively forms metal
Envelope, when the stress formed toward underground injection steam jacket (8) because expanding with heat and contract with cold is flexible, hanger (6) lower part is covering therewith
It is moved up and down in tube head shell (7), to make the thermal recovery well head device for being mounted on upper flange (2) top will not be because of casing (8)
Reduction and move up and down, ensure that the stability of well head.
Application No. is the utility model patents of CN201220045867.5 for the prior art, and it is marine to disclose a kind of monotubular twin-well
Thermal recovery well head device, it is suitable for the heavy crude heat extraction technique of offshore platform monotubular twin-well.It by big ring flat-plate (2), small ring flat-plate (3),
Positioning pin (1) falls slips (4), casing head (5), tubing head (7), boll-weevil hanger (9), adapter flange (10), gate valve (8), adopts
Oil tree (11) composition, casing head (5), tubing head (7), production tree (11) are split type structure, connection method under casing head (5)
Blue (16) and upper connecting flange (17) are sector structure, and the upper flange (18) of tubing head (7) is sector structure, the utility model two
The various works such as a wellhead assembly is mutually indepedent, can carry out steam injection or electric motor drive oil pump system or a Wellhead steam injection simultaneously, another recovers the oil
Industry mode, due to each well head be equipped with steam injection tubing hanger (23), electric motor drive oil pump system tubing hanger (19) and steam injection adapter flange
(24) and electric motor drive oil pump system steam injection flange (20), therefore each wellhead assembly is relatively simple in replacement operation mode, significantly facilitates
Field operation.
In view of described above, current existing casing head is comparatively complete not enough in terms of sealing and pressure release and fluid injection
Kind, therefore, it is necessary to study a casing heads that can be more perfect for we.
Summary of the invention
It is an object of the invention to overcome problem above of the existing technology, a kind of casing head and oil and gas wellhead one are provided
Body makeup is set, and the present invention is novel in design, simple and reasonable for structure, can not only pressure gauge on effective protection equalizing main, and
Ftercompction can be carried out in the higher progress pressure release of annular space pressure and when annular space pressure is too low, and help to mend and squeeze
The construction operations such as mud, monitoring and filling equilibrium liquid.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme:
A kind of casing head and oil and gas wellhead integrated apparatus, including pedestal and the casing head ontology being set on the base and
Slips, protective casing hanger and boll-weevil hanger on casing head ontology are set, and the two sides of described sleeve pipe head ontology are symmetrical
It is provided with balance mechanism, the balance mechanism is between slips and protective casing hanger and protective casing hanger and oil
Between pipe hanger；The balance mechanism includes that equalizing main and the flange head being arranged on equalizing main, pressure safety are seen
Device, shield pressure valve, pressure gauge, perfusion valve and injection pressure table are examined, is provided with side between the perfusion valve and shield pressure valve
To pressure relief mechanism, the both ends that the flange head is set to equalizing main are used for and the method on casing head ontology and/or perfusion pipeline
Blue connector connection.It adopts this technical solution, pedestal is for being mounted on oil and gas wellhead or connecting with the well seat on oil and gas wellhead；Slips
For connecting surface pipe；Pressure safety viewer is used to tentatively show the pressure in the annular space between each layer pipe；Protect pressure valve
Door cannot be only used for protection pressure gauge, and can be used for pressure release and/or mend to squeeze the construction operations such as mud, filling equilibrium liquid；Pressure
Table is used to accurately show the pressure value between each layer pipe；Perfusion valve can be used for carrying out mending the constructions such as crowded mud and filling equilibrium liquid and make
Industry；Injection pressure table can be used for monitoring injection pressure, squeeze the construction such as mud and filling equilibrium liquid to guarantee to go on smoothly to mend
Operation；Lateral pressure relief mechanism is used to the high pressure in the annular space between each layer pipe carrying out pressure release, to protect in annular space
Pressure balance.
Preferably, the equalizing main set gradually flange head, pressure safety viewer, shield pressure valve, pressure gauge,
Lateral pressure relief mechanism, perfusion valve, injection pressure table and flange head.It adopts this technical solution, equalizing main is connected by flange head
To casing head ontology；Pressure safety viewer is used in the annular space when protecting pressure valve closing, between preliminary observation layer pipe
Pressure, wherein pressure is identified as low pressure, medium and high pressure.
Preferably, movement of the pressure safety viewer using the sensing element driving sliding block in viewer, with logical
The pressure crossed in the moving distance and sliding block of sliding block identifies to judge the pressure in pipeline；Wherein, pressure mark can pass through cunning
Shade on block indicates the height of pressure.
Preferably, the lateral pressure relief mechanism includes relief tube and the relief valve and flange that are arranged on relief tube
Head, the flange head are set to the both ends of relief tube, and the bump joint being arranged in one end and equalizing main is connect, and the other end is used
It is connect in the bump joint on relief pipeline.It adopts this technical solution, the relief valve of setting is used for the pressure in annular space
Power excretes out；The relief tube of setting is connect with relief pipeline to be helped toxic gas etc. being excreted to underground.
Preferably, the shield pressure valve, perfusion valve and relief valve include the manually-operated gate or electrically operated valve of setting；Institute
Electrically operated valve is stated to connect by drive control device with central controller.It adopts this technical solution, signal is sent by central controller
To drive control device, by drive control device opening or closing according to the signal control electrically operated valve received；Wherein, motor-driven valve
Door is usually made of electric operator and valve, and electrically operated valve uses electric energy as power to drive by electric operator
Movable valve, realizes the switch motion of valve, to reach the switch purpose to pipeline medium；In addition, electric operator includes
Part revolution electric operator and multi-rotary electric actuator, the how rotary executing agency being driven by electricity be it is the most frequently used,
One of most reliable executing agency's type；Use single-phase or threephase motor driving gear or the last driving stem spiral shell of worm and gear
Mother, valve stem nut, which makes valve rod generate movement, opens or closes valve.More rotary electric executing agencies can be big with fast driving
Sized valves；In order to protect valve not damaged, the limit switch being mounted in the terminal of valve stroke can cut off motor power,
Simultaneously when safe torque is exceeded, torque sensing device can also cut off motor power, and position switch is used to indicate opening for valve
Valve can be manually operated in power failure in off status, the handwheel for installing clutch apparatus.This seed type executing agency
Major advantage is that all components are all mounted in a shell, be integrated in waterproof and dustproof, explosion-proof shell it is all basic and
Advanced function.Major defect is, when power failure, valve can only be held in place, and only uses standby power system, valve
Door is just able to achieve failsafe position (failure is opened or fail close).It is executed in addition, this executing agency is similar to electronic more revolutions
Mechanism, main difference is that executing agency's final output is 1/4 turn of movement for remembering 90 degree.The electronic rotary execution machine of list of a new generation
Structure combines the sophisticated functions of most of more rotary power units, such as: it is real using the user-friendly operation interface of non-entry formula
Existing parameter setting and diagnostic function.Single rotary power unit is compact-sized can be installed on small size valve, usual power output
In addition square should be that required power supply is smaller, they can install battery to realize failsafe operation up to 800 kilogram-metres.
Preferably, the pressure gauge and injection pressure table include the mechanical pressure gauge or digital pressure gauge of setting；It is described
Digital pressure gauge is connect with central controller.It adopts this technical solution, the pressure signal that digital pressure gauge is used to measure is sent to
Central controller；Wherein, pressure gauge uses the instrument for measuring and indicating using elastic element as sensing element higher than environmental pressure,
Using extremely widespread, it almost spreads all industrial flow and scientific research field.In heat distribution pipe network, oil gas transmission, supply water gas supply
The fields such as system, vehicle maintenance maintenance factory shop are seen everywhere；Especially in industrial stokehold and technology measurement process, due to machine
The elastic sensing element of tool formula pressure gauge has very high mechanical strength and the characteristics such as convenient for production, so that mechanical compression table
It has been more and more widely used.Digital pressure gauge combines microprocessing advanced in the world and advanced analog-to-digital conversion is calculated
Method reaches the requirement of high-precision, low-power consumption.Large-screen lc display technology, unique background light technology, makes data at night
It can clear readability.Using chip inlet, peak is kept to instrumented data acquisition, memory, measurement, is returned to zero manually.Shell uses
Stainless steel is hermetically sealed, and corrosion-resistant, anti-vibration can be applicable in the environment of Various Complex.Measured medium pressure is mainly utilized, is led to
Excess pressure interface passes to the pressure-sensitive diaphragm of sensor, and the electric signal of induction is converted through amplification, V/A, sent at CPU by sensor
Reason, setting display number, the output of control switch amount, and analog quantity or digital output are provided to realize that pressure shows, controls
With the process of pick-up.
Preferably, the central controller include the main control board being connect with digital pressure gauge and electrically operated valve and
Processor on main control board is set；The processor passes through pressure signal and the inside of the digital pressure gauge received
The control procedure auto-control of setting protects opening or closing for pressure valve, perfusion valve and/or relief valve.Using this technical side
Case, by central controller opening or closing according to the pressure signal that receives and the control procedure auto-control valve of setting,
And the opening and closing for the bottler placer that pipeline is connected are perfused.
Preferably, the side of the equalizing main is additionally provided with alarm device, the alarm device and controller and/or pressure
Table connection.It adopts this technical solution, helps to remind staff, wherein alarm device uses acoustooptic alarm.
The beneficial effects of the present invention are:
It is simple and reasonable for structure 1. of the invention novel in design, can not only pressure gauge on effective protection equalizing main, and
And ftercompction can be carried out in the higher progress pressure release of annular space pressure and when annular space pressure is too low, and help to mend
Squeeze the construction operations such as mud, monitoring and filling equilibrium liquid；
2. the shield pressure valve that the present invention is arranged, perfusion valve and pressure relief valve can effectively seal the pressure in annular space
Power, and the central controller by being arranged is able to carry out and automatically controls opening or closing to valve, helps to promote digitlization
Management, reduces the workload of staff；
3. the present invention can observe annular space the case where valve is not switched on by the pressure safety viewer of setting
In pressure, and to protect pressure gauge boosting too fast, and can cause when over pressure, by slowly opening shield pressure valve
Pressure gauge damage, can accurately show the pressure in annular space；
4. relief valve of the invention can be after shield pressure valve be opened by the high pressure gas or fluid drainage in annular space
It goes out, to protect the pressure in annular space；
5. the perfusion valve and injection pressure table that the present invention is arranged are real-time lower than precompressed for the pressure in annular space
To carry out ftercompction when pressure, the pressure of annular space is promoted；Wherein, pressure of the perfusion valve on injection pressure table is greater than pressure
It is irrigated when pressure on table to carry out ftercompction.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention and attached drawing is cooperated to be described in detail below.This hair
Bright specific embodiment is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the present invention；
Fig. 2 is partial schematic diagram of the present invention.
Figure label explanation: pedestal 1, casing head ontology 2, slips 3, protective casing hanger 4, boll-weevil hanger
5, balance mechanism 6, equalizing main 7, flange head 8, pressure safety viewer 9 protect pressure valve 10, pressure gauge 11, perfusion
Pipeline 15, bump joint 16, relief tube 17, pressure release is perfused in valve 12, injection pressure table 13, lateral pressure relief mechanism 14
Valve 18, relief pipeline 19, well seat 101, surface pipe 102, protective casing 103, oil pipe 104.
Specific embodiment
The invention will be further described with reference to the accompanying drawing:
Referring to figs. 1 to shown in Fig. 2, a kind of casing head and oil and gas wellhead integrated apparatus, including pedestal 1 and be arranged the bottom of at
Casing head ontology 2 on seat 1 and the slips 3, protective casing hanger 4 and the boll-weevil hanger 5 that are arranged on casing head ontology 2,
The two sides of described sleeve pipe head ontology 2 are symmetrically arranged with balance mechanism 6, and the balance mechanism 6 is located at slips 3 and protective casing suspension
Between device 4 and between protective casing hanger 4 and boll-weevil hanger 5；The balance mechanism 6 includes equalizing main 7 and sets
Set flange head 8, pressure safety viewer 9, shield pressure valve 10, pressure gauge 11, perfusion valve 12 and perfusion on equalizing main 7
Pressure gauge 13 is provided with lateral pressure relief mechanism 14 between the perfusion valve 12 and shield pressure valve 10, and the flange head 8 is set to
The both ends of equalizing main 7 are used to connect with the bump joint 16 on casing head ontology 2 and/or perfusion pipeline 15.Using this technology
Scheme, pedestal 1 is for being mounted on oil and gas wellhead or connecting with the well seat 101 on oil and gas wellhead；Slips 3 is for connecting surface pipe
102；Pressure safety viewer 13 is used to tentatively show the pressure in the annular space between each layer pipe；Shield pressure valve 10 not only can be used
In protection pressure gauge 11, and it can be used for pressure release and/or mend to squeeze the construction operations such as mud, filling equilibrium liquid；Pressure gauge 11 is used for
Accurately show the pressure value between each layer pipe；Perfusion valve 12 can be used for carrying out mending the construction operations such as crowded mud and filling equilibrium liquid；
Injection pressure table 13 can be used for monitoring injection pressure, squeeze the constructions work such as mud and filling equilibrium liquid to guarantee to go on smoothly to mend
Industry；Lateral pressure relief mechanism 14 is used to the high pressure in the annular space between each layer pipe carrying out pressure release, to protect in annular space
Pressure balance.
Preferably, flange head 8, pressure safety viewer 9, shield pressure valve 10, pressure that the equalizing main 7 is set gradually
Power table 11, lateral pressure relief mechanism 14, perfusion valve 12, injection pressure table 13 and flange head 8.It adopts this technical solution, balance pipe
Road 7 is connected to casing head ontology 2 by flange head 8；Pressure safety viewer 9 is used for when protecting the closing of pressure valve 10, preliminary observation
The pressure in annular space between layer pipe, wherein pressure is identified as low pressure, medium and high pressure.
Preferably, movement of the pressure safety viewer 9 using the sensing element driving sliding block in viewer, with logical
The pressure crossed in the moving distance and sliding block of sliding block identifies to judge the pressure in pipeline；Wherein, pressure mark can pass through cunning
Shade on block indicates the height of pressure.
Preferably, the lateral pressure relief mechanism 14 includes relief tube 17 and the relief valve 18 being arranged on relief tube 17
With flange head 8, the flange head 8 is set to the both ends of relief tube 17, the bump joint 16 being arranged in one end and equalizing main 7
Connection, the other end with the bump joint 16 on relief pipeline 19 for connecting.It adopts this technical solution, the relief valve 18 of setting is used
It is excreted out in by the pressure in annular space；The relief tube 17 of setting is connect with relief pipeline 19 to be facilitated toxic gas etc.
It is excreted to underground.
Preferably, the shield pressure valve 10, perfusion valve 12 and relief valve 18 include the manually-operated gate or electronic of setting
Valve；The electrically operated valve is connect by drive control device with central controller.It adopts this technical solution, is sent out by central controller
The number of delivering letters gives drive control device, by drive control device opening or closing according to the signal control electrically operated valve received；Wherein,
Electrically operated valve is usually made of electric operator and valve, and electrically operated valve uses electric energy to come as power through electronic execution machine
Structure drives valve, realizes the switch motion of valve, to reach the switch purpose to pipeline medium；In addition, electronic execution machine
Structure includes part revolution electric operator and multi-rotary electric actuator, and the how rotary executing agency being driven by electricity is most
One of common, most reliable executing agency's type；It is finally driven using single-phase or threephase motor driving gear or worm and gear
Valve stem nut, valve stem nut, which makes valve rod generate movement, opens or closes valve.More rotary electric executing agencies can be quick
Drive large scale valve；In order to protect valve not damaged, the limit switch being mounted in the terminal of valve stroke can cut off electricity
Electromechanical source, while when safe torque is exceeded, torque sensing device can also cut off motor power, and position switch is used to indicate valve
Valve can be manually operated in power failure in the switch state of door, the handwheel for installing clutch apparatus.This seed type executes
The major advantage of mechanism is that all components are all mounted in a shell, is integrated in waterproof and dustproof, explosion-proof shell all
Basic and advanced function.Major defect is, when power failure, valve can only be held in place, and only uses backup power source
System, valve are just able to achieve failsafe position (failure is opened or fail close).In addition, this executing agency is similar to electronic more times
Turn executing agency, main difference is that executing agency's final output is 1/4 turn of movement for remembering 90 degree.The electronic list of a new generation is rotary
Executing agency combines the sophisticated functions of most of more rotary power units, such as: use the user-friendly operation of non-entry formula
Realize parameter setting and diagnostic function in interface.Single rotary power unit is compact-sized can be installed on small size valve, usually
For output torque up to 800 kilogram-metres, it is smaller in addition to should be required power supply, they can install battery to realize that failure safe is grasped
Make.
Preferably, the pressure gauge 11 and injection pressure table 13 include the mechanical pressure gauge or digital pressure gauge of setting；
The digital pressure gauge is connect with central controller.It adopts this technical solution, the pressure signal hair that digital pressure gauge is used to measure
Give central controller；Wherein, pressure gauge uses the instrument for measuring and indicating using elastic element as sensing element higher than environmental pressure
Table, application is extremely widespread, it almost spreads all industrial flow and scientific research field.In heat distribution pipe network, oil gas transmission, supply water
The fields such as gas system, vehicle maintenance maintenance factory shop are seen everywhere；Especially in industrial stokehold and technology measurement process, due to
The elastic sensing element of mechanical compression table has very high mechanical strength and the characteristics such as convenient for production, so that mechanical compression
Table has been more and more widely used.Digital pressure gauge combines microprocessing advanced in the world and advanced analog-to-digital conversion is calculated
Method reaches the requirement of high-precision, low-power consumption.Large-screen lc display technology, unique background light technology, makes data at night
It can clear readability.Using chip inlet, peak is kept to instrumented data acquisition, memory, measurement, is returned to zero manually.Shell uses
Stainless steel is hermetically sealed, and corrosion-resistant, anti-vibration can be applicable in the environment of Various Complex.Measured medium pressure is mainly utilized, is led to
Excess pressure interface passes to the pressure-sensitive diaphragm of sensor, and the electric signal of induction is converted through amplification, V/A, sent at CPU by sensor
Reason, setting display number, the output of control switch amount, and analog quantity or digital output are provided to realize that pressure shows, controls
With the process of pick-up.
Preferably, the central controller include the main control board being connect with digital pressure gauge and electrically operated valve and
Processor on main control board is set；The processor passes through pressure signal and the inside of the digital pressure gauge received
The control procedure auto-control of setting protects opening or closing for pressure valve 10, perfusion valve 12 and/or relief valve 18.Using this skill
Art scheme plays on or off according to the pressure signal that receives and the control procedure auto-control valve of setting by central controller
It closes, and the opening and closing for the bottler placer that pipeline 15 is connected is perfused.
Preferably, the side of the equalizing main 7 is additionally provided with alarm device, the alarm device and controller and/or pressure
The connection of power table.It adopts this technical solution, helps to remind staff, wherein alarm device uses acoustooptic alarm.
Specific embodiment
In actual use, when the pressure in pressure safety viewer is shown as high pressure, by slowly opening shield pressure
Valve rises the pressure value on pressure gauge slowly, when pressure value rises above the pressure of precompressed, by opening pressure release
Valve goes out annular space mesohigh gas or fluid drainage, until the pressure on pressure gauge is shown in precompressed value range, so
Afterwards, shield pressure valve and relief valve are closed；When the pressure in pressure safety viewer is shown as low pressure, shield pressure valve is opened
Afterwards, increase the pressure value on pressure gauge, when pressure value shows the pressure lower than precompressed, injection pressure table is passed through by bottler placer
Be higher than the pressure of pressure 2Mpa-5Mpa that pressure value show by the perfusion valve opened mended into annular space crowded mud or
Equilibrium liquid is filled, when the pressure in pressure value reaches the pressure of precompressed, stops mending and squeezes mud or filling equilibrium liquid, it then, will
Perfusion valve and shield pressure valve are successively closed, to seal annular space.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of casing head and oil and gas wellhead integrated apparatus, including pedestal (1) and the casing head sheet being arranged on pedestal (1)
Body (2) and slips (3), protective casing hanger (4) and the boll-weevil hanger (5) being arranged on casing head ontology (2), feature
Be: the two sides of described sleeve pipe head ontology (2) are symmetrically arranged with balance mechanism (6), and the balance mechanism (6) is located at slips (3)
Between protective casing hanger (4) and between protective casing hanger (4) and boll-weevil hanger (5)；The balance mechanism
It (6) include equalizing main (7) and the flange head (8) being arranged on equalizing main (7), pressure safety viewer (9), shield pressure valve
Door (10), pressure gauge (11), perfusion valve (12) and injection pressure table (13), the perfusion valve (12) and shield pressure valve (10)
Between be provided with lateral pressure relief mechanism (14), the flange head (8) be set to equalizing main (7) both ends be used for and casing head sheet
Bump joint (16) connection on body (2) and/or perfusion pipeline (15).
2. a kind of casing head according to claim 1 and oil and gas wellhead integrated apparatus, it is characterised in that: the balance pipe
Flange head (8) that road (7) is set gradually, pressure safety viewer (9), shield pressure valve (10), pressure gauge (11), lateral pressure release machine
Structure (14), perfusion valve (12), injection pressure table (13) and flange head (8).
3. a kind of casing head according to claim 1 and oil and gas wellhead integrated apparatus, it is characterised in that: the pressure is protected
Dangerous viewer (9) drives the movement of sliding block using the sensing element in viewer, to pass through the moving distance and sliding block of sliding block
On pressure identify to judge the pressure in pipeline；Wherein, pressure mark can indicate pressure by the shade on sliding block
Height.
4. a kind of casing head according to claim 1 and oil and gas wellhead integrated apparatus, it is characterised in that: described laterally to let out
Press mechanism (14) includes the relief valve (18) and flange head (8) of relief tube (17) and setting on relief tube (17), the method
Blue head (8) is set to the both ends of relief tube (17), and the bump joint (16) being arranged in one end and equalizing main (7) is connect, separately
One end with the bump joint (16) on relief pipeline (19) for connecting.
5. a kind of casing head according to claim 1 or 3 and oil and gas wellhead integrated apparatus, it is characterised in that: the shield
Pressure valve (10), perfusion valve (12) and relief valve (18) include the manually-operated gate or electrically operated valve of setting；The electrically operated valve
It is connect by drive control device with central controller.
6. a kind of casing head according to claim 1 and oil and gas wellhead integrated apparatus, it is characterised in that: the pressure gauge
(11) and injection pressure table (13) includes the mechanical pressure gauge or digital pressure gauge being arranged；The digital pressure gauge and center control
Device connection.
7. a kind of casing head according to claim 5 or 6 and oil and gas wellhead integrated apparatus, it is characterised in that: in described
Centre controller includes the main control board connecting with digital pressure gauge and electrically operated valve and the place that is arranged on main control board
Manage device；The processor passes through the pressure signal of the digital pressure gauge received and the control procedure auto-control of inner setting
Opening or closing for valve (12) and/or relief valve (18) is perfused in shield pressure valve (10).
8. a kind of casing head according to claim 1 and oil and gas wellhead integrated apparatus, it is characterised in that: the balance pipe
The side in road (7) is additionally provided with alarm device, and the alarm device is connect with controller and/or pressure gauge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292228.5A CN110107246B (en) | 2019-04-12 | 2019-04-12 | Oil gas well head and casing head integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292228.5A CN110107246B (en) | 2019-04-12 | 2019-04-12 | Oil gas well head and casing head integrated device |
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| CN110107246A true CN110107246A (en) | 2019-08-09 |
| CN110107246B CN110107246B (en) | 2022-04-19 |
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| CN201910292228.5A Active CN110107246B (en) | 2019-04-12 | 2019-04-12 | Oil gas well head and casing head integrated device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110397818A (en) * | 2019-08-22 | 2019-11-01 | 天水华圆医疗器械有限公司 | A kind of multilayer shroud structure of powder material steam instantaneous sterilizing |
| CN112031695A (en) * | 2020-11-05 | 2020-12-04 | 胜利油田胜机石油装备有限公司 | Gas production wellhead device and gas production well |
| CN113175309A (en) * | 2020-01-09 | 2021-07-27 | 中国石油天然气股份有限公司 | Well head safety pressure testing device |
| CN116255467A (en) * | 2023-05-10 | 2023-06-13 | 成都成高阀门有限公司 | Double-cutoff forced sealing valve and control method thereof |
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| US5158326A (en) * | 1989-07-07 | 1992-10-27 | Cooper Industries, Inc. | Casing head connector |
| US20040163821A1 (en) * | 1998-10-26 | 2004-08-26 | Vanbilderbeek Bernad H. | Clamping well casings |
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| CN113175309A (en) * | 2020-01-09 | 2021-07-27 | 中国石油天然气股份有限公司 | Well head safety pressure testing device |
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| CN116255467B (en) * | 2023-05-10 | 2023-07-21 | 成都成高阀门有限公司 | Double-cutoff forced sealing valve and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN110107246B (en) | 2022-04-19 |
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