CN208996714U - Wellhead Control System for coal underground gasifying technology - Google Patents
Wellhead Control System for coal underground gasifying technology Download PDFInfo
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- CN208996714U CN208996714U CN201821756918.9U CN201821756918U CN208996714U CN 208996714 U CN208996714 U CN 208996714U CN 201821756918 U CN201821756918 U CN 201821756918U CN 208996714 U CN208996714 U CN 208996714U
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Abstract
The utility model provides a kind of Wellhead Control System for being used for coal underground gasifying technology (ISC), from top to bottom includes such as lower component: coiled tubing；Gooseneck；Injection head is sheathed on gooseneck tube end, for providing injection and power of pulling back to coiled tubing；Blowout prevention box, being set to injection head downstream for sealing coiled tubing surrounding annular space pressure prevents the reversed spilling of various fluids in operating process；Working window is set to lubricator downstream, the handling for underground craft control appliance；Preventer is set to working window downstream and cooperates with well head, for finding and controlling the reversed overflow of various fluids in production and operating process and blowout；Bracket.When carrying out underground coal gasification(UCG) production using the Wellhead Control System of the utility model, it no longer needs directly to implement in the case where interrupting Underground Coal Gasification Process continuously the withdrawing of underground craft control appliance, maintenance of equipment and replacement, has ensured the stability of Underground Coal Gasification Process.
Description
Technical field
The utility model provides a kind of Wellhead Control System for being used for coal underground gasifying technology (ISC).Particularly, originally
Utility model provides a kind of Wellhead Control System that can be implemented in coal underground gasifying technology and continuously controllably gasify.
Background technique
Underground coal gasification(UCG) (ISC) is by the burning of subterranean coal and gasification reaction that coal is direct in the presence of an oxidizer
It is converted into the process of product gas, the product gas is commonly referred to as synthesis gas, which can be subsequently used as the original of a variety of applications
Material, including fuel production, chemicals production and power generation etc..This coal underground gasification technology is all applicable for most of coal deposits
's.Relevant cost of labor and capital construction cost, this skill are increasingly stringenter and considered in view of the environmental requirement in relation to mining industry
Art is undoubtedly very attractive.
Ground drilling leads directly to coal seam, and the injection of oxygen supply agent and product gas output provide effective channel.A pair of of drilling well is in underground
Connection or horizontal extension constitute a substantial horizontal drilling channel (can be also simply referred to as coal seam hoistway or communicating passage).The channel
Facilitate oxidant injection, burned out area growth and product gas conveying.One drilling well for oxidant injection is known as " injection well ",
Another drilling well for being used to produce product gas is known as " product well ".Orientation horizontal drilling and vertical drilling all can be used as injection well
Or product well.Underground coal gasification(UCG) (ISC) may also need to hang down using to one or more between injection well and product well
Straight well (such as: functional well and service well).
When having injection well, product well and horizontal channel to connect the two in coal seam, this construction is referred to as a coal
Charcoal underground gasification (ISC) unit or well pair.ISC unit includes combustion zone, gasification zone and pyrolysis zone.Wherein, combustion zone is in coal seam
Near middle oxidant decanting point；Gasification zone is centered around around combustion zone or in combustion zone downstream in the form of radial, and coal exists
Gasification zone is gasified, is partially oxidized, to generate product gas；Pyrolysis zone generally exists in gasification zone downstream, the pyrolytic reaction of coal
Here occur.The product gas of high temperature is finally transported to ground from product well well head from gasification zone toward downstream flow.In coal combustion
Or while gasification, the ISC burned out area in coal seam, which can be grown, to become larger.
Synthesis gas (CO, CO are usually contained by the product gas (crude synthesis gas) that underground coal gasification(UCG) generates2, H2, CH4And its
The mixture of his gas) and other compositions solid particle, water, coal tar, hydrocarbon vapours, other microcomponents include H2S,
NH4, COS etc.).Its complicated component degree depend on many aspects: oxidant used in underground coal gasification(UCG) (air or other
Oxidant, such as oxygen, oxygen-enriched air or vapour mixture), the inherent water in coal seam or surrounding formations penetrate into water in coal seam,
The operating parameter of coal quality and coal underground gasifying technology, including temperature, pressure etc..
According to existing patent document, coal underground gasification technology problem encountered is specifically included that at present
A) existing Wellhead Control System is all sufficiently complex in design and operation, needs one or more independent operations
Platform implements execute-in-place.
B) existing Wellhead Control System all suffers from very long, high cost of bulky, transport difficult, on-site assembly time-consuming etc.
Problem.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of well in coal underground gasifying technology
Mouth control system.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
For the Wellhead Control System of coal underground gasifying technology, the Wellhead Control System includes such as lower part from top to bottom
Part:
Coiled tubing, for conveying the process fluid and underground craft control appliance of gasification；
Gooseneck is sheathed on coiled tubing, for guiding coiled tubing to enter downstream injection head apparatus；
Injection head is sheathed on gooseneck tube end, for providing injection and power of pulling back to coiled tubing；
Blowout prevention box, be set to injection head downstream prevents various in operating process for sealing coiled tubing surrounding annular space pressure
The reversed spilling of fluid；
Working window is set to lubricator downstream, the handling for underground craft control appliance；
Preventer is set to working window downstream and cooperates with well head, various in production and operating process for finding and controlling
The reversed overflow of fluid and blowout can cut coiled tubing if necessary and shunt in a well, and protect ground installation and operator
Personal safety；
Bracket is detachably set to well head, is used to support entire control system.
Wherein, the injection head in Wellhead Control System described in the utility model, when industrialized production, can be used no killing well and rise
Lower device replaces injection head to save project cost.Single ISC well is to each self-configuring snubbing unit, 10-20 ISC well
To one vehicle-mounted injection head unit of configuration.
Wellhead Control System described in the utility model further includes lubricator, positioned at working window below or above and the company of being sheathed on
Continuous oil pipe for providing placement space in cargo handling process for underground process equipment, and provides one section of pressure in operation
Buffer area.Lubricator and its position can be selected and be adjusted according to the size and weight of underground craft control appliance, including be taken
Fire-fighting jet pipe, lubricator are placed in above working window or lubricator is placed in below working window.
The operating method of Wellhead Control System described in the utility model, based on having been provided with ISC well pair in subterranean coal
Completion system, steps are as follows for the operating method:
S1: coiled tubing passes through above gooseneck, injection head and blowout prevention box to operation window；
S2: opening working window, installs underground craft control appliance and connect with coiled tubing；
S3: working window is closed, and checks the air-tightness of entire Wellhead Control System；
S4: opening preventer, applies external force by injection head and coiled tubing is delivered to the specified production position of subterranean coal；
S5: preventer sealing coiled tubing annular space is fastened, underground coal gasification(UCG) production is carried out；
S6: unclamping preventer, applies external force by injection head and withdraws coiled tubing, without suspending coal during withdrawing
Underground gasification production；
S7: the underground coal gasification(UCG) that continuous-stable is carried out by repeating above-mentioned S5 and S6 step produces, until consumption is along note
Enter all coal deposits in well.
The operating method of Wellhead Control System described in the utility model further includes generation underground technique control in process of production
The operating method of control equipment fault condition.At this point, underground technology controlling and process can be set by the Wellhead Control System of the utility model
It is standby to withdraw to working window and/or lubricator, preventer is closed, opens working window, and in working window opening to underground technique
Control equipment is repaired and is replaced.Later, it repeats above-mentioned S3-S7 step and carries out underground coal gasification(UCG) production.
The operating method of Wellhead Control System described in the utility model further includes that underground emergency thing occurs in process of production
Therefore the operating method of situation.At this point, coiled tubing and well can be cut by the preventer in the utility model Wellhead Control System
Lower craft control appliance is simultaneously shunt in a well.After the exclusion of underground emergency accident, repeats above-mentioned S1-S7 step and carry out coal underground gas
Metaplasia produces.
According to the utility model, when carrying out underground coal gasification(UCG) production using the Wellhead Control System of the utility model,
No longer need directly to implement in the case where interrupting Underground Coal Gasification Process underground craft control appliance continuously withdraw, equipment
Maintenance and replacement, have ensured the stability of Underground Coal Gasification Process.Meanwhile underground is when there is emergency episode, it can in time, efficiently
Cutting well in equipment and shut-in well, avoid the generation of various potential safety accidents.Entire technological operation is more flexible and convenient, from
And realize continuous, the stable and safe operation of coal underground gasifying technology, progress is brought for the prior art.
Detailed description of the invention
Fig. 1 is the Wellhead Control System schematic diagram in the technical solution of the utility model
Fig. 2 is the coiled tubing schematic cross-section in the technical solution of the utility model
In the drawings, identical appended drawing reference refers to same parts.Specifically, appended drawing reference meaning involved in each attached drawing
It is as follows:
1, coiled tubing；2, gooseneck；3, injection head；4, blowout prevention box；5, browpiece；6, lubricator；7, working window；8,
Preventer；9, well head；10, oxidant channel；11, process flow channel；12, instrument tubing string；13, cable.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model is made further specifically
It is bright.
Wellhead Control System for coal underground gasifying technology, which is characterized in that the Wellhead Control System from up to
Lower includes such as lower component:
Coiled tubing, for conveying the process fluid and underground craft control appliance of gasification；
Gooseneck is sheathed on coiled tubing, for guiding coiled tubing to enter downstream injection head apparatus；
Injection head is sheathed on gooseneck tube end, for providing injection and power of pulling back to coiled tubing；
Blowout prevention box, be set to injection head downstream prevents various in operating process for sealing coiled tubing surrounding annular space pressure
The reversed spilling of fluid；
Working window is set to lubricator downstream, the handling for underground craft control appliance；
Preventer is set to working window downstream and cooperates with well head, various in production and operating process for finding and controlling
The reversed overflow of fluid and blowout can cut coiled tubing if necessary and shunt in a well, and protect ground installation and operator
Personal safety；
Bracket is detachably set to well head, is used to support entire control system.
Wherein, the injection head in Wellhead Control System described in the utility model, when industrialized production, can be used no killing well and rise
Lower device replaces injection head to save project cost.Single ISC well is to each self-configuring snubbing unit, 10-20 ISC well
To one vehicle-mounted injection head unit of configuration.
Wellhead Control System described in the utility model further includes lubricator, positioned at working window below or above and the company of being sheathed on
Continuous oil pipe for providing placement space in cargo handling process for underground process equipment, and provides one section of pressure in operation
Buffer area.Lubricator and its position can be selected and be adjusted according to the size and weight of underground craft control appliance, including be taken
Fire-fighting jet pipe, lubricator are placed in above working window or lubricator is placed in below working window.
Coiled tubing in the technical solution of the utility model, for conveying the process fluid of gasification (for example, oxidation
Agent, gasifying agent and coolant etc.) and underground craft control appliance (for example, technology controlling and process sensor, measuring instrument, underground oxygen supply
Equipment and ignition installation etc.) reach subterranean coal in predetermined position.Wherein the coiled tubing is height air-tightness component, by
This can to avoid high concentration oxygen agent such as pure oxygen in use due to leakage etc. caused by safety problem.
Coiled tubing in the technical solution of the utility model can be with according to the coal underground gasifying technology that project is selected
Select single coiled tubing, Concentric Coiled Tubing and composite continuous oil pipe.Its length selects it is ensured that coiled tubing can arrive at
Wellhole development length inside coal seam and coal seam.Outer diameter generally requires the fluid flow calculated and pressure drop to carry out according to gasification process
Selection, including 1.75,2,2.375,2.875 and 3.5 inches.The material and wall thickness of coiled tubing are generally according to coolant used
Property, the expected Underground Coal Gasification Process cycle of operation, the number of estimated disengaging subterranean coal and fluid flow etc. are selected
It selects.It is corrosion-resistant, resistance to meet its that HDPE composite, carbon steel, 316L stainless steel or more advanced material generally can be used in material
It corrodes, anti-oxidant and different gasification process (for example, air gasification, oxygen-rich gasification or pure oxygen gasification) requirement.
Gooseneck in the technical solution of the utility model, for guiding coiled tubing to enter downstream injection head apparatus.Goose
Neck tube is equipped with idler wheel, to guide coiled tubing to enter injection head；It is equipped with the mechanism that anti-coiled tubing breaks away, so as to continuous
Oil pipe along entering or exit gooseneck with the tangent direction of gooseneck, and along be wrapped in generated angle on roller enter or
Exit gooseneck；It is equipped with and fixes and supports device, easily to mount and dismount gooseneck.
Injection head in the technical solution of the utility model, for providing injection and power of pulling back to coiled tubing.Injection
Head, including support frame, the chain transmission system being set on support frame and drive system.The chain transmission system includes multiple groups
Sprocket wheel and the chain for being provided with the grip block for clamping coiled tubing, one chain drive of every group of chain wheel drive and adjacent two
The span line of chain is opposite to be arranged in parallel the oil pipe channel to be formed and be passed through for coiled tubing.The type selecting of injection head is according to coal
Lower gasification process design alternative standardized product, including 80,000 pounds, 100,000 pounds, 120,000 pounds and 200,000 pounds of equipment.
Injection head in the technical solution of the utility model, when industrialized production, can be used snubbing unit and replace note
Enter head to save project cost.Single ISC well is to each self-configuring snubbing unit, and 10-20 ISC well is to one vehicle of configuration
Carry injection head unit.Wherein, under normal production scenarios, snubbing unit is used to provide low speed, thin tail sheep for coiled tubing
Power of pulling back, such as withdraw speed can be realized down to daily 1-5 meters coal underground gasifying technology continuity requirement.Production
Use vehicle-mounted injection head for continuous oil under emergency and the improper condition of production in preceding equipment conveying and debugging situation, production
Pipe provides high speed, the injection of big displacement and power of pulling back, such as withdraws speed and may be up to 10-15 meters per minute with improving coal
The operating efficiency of lower gasification process and safety.
Blowout prevention box in the technical solution of the utility model prevents from operating for sealing coiled tubing surrounding annular space pressure
The reversed spilling of various fluids in the process.Single-plicate or twin product may be selected in blowout prevention box, to meet to different gasification process
Design need.The type of attachment of blowout prevention box and upstream and downstream equipment requires air-tightness to connect, and such as flange form and union formula, and requires
Blowout prevention box product passes through stringent experiments of sealing performance by API6A and API16A standard, and the performance safety to guarantee blowout prevention box is reliable.
Working window in the technical solution of the utility model, the handling for underground craft control appliance；Working window is equipped with
Boll-weevil hanger and tubing seal device, to meet the air-tightness requirement of the utility model Wellhead Control System under working condition.
By hydraulic device, working window is opened and closed.After working window is opened, upper window can be promoted to certain distance (for example, 0.5-
2 meters), to meet the handling of underground process equipment.The use of working window can effectively provide the efficiency and safety of well control operation,
Labor intensity is reduced, brings progress for the prior art.
Lubricator in the technical solution of the utility model, for providing placement in cargo handling process for underground process equipment
Space, and one section of pressure buffer area is provided in operation.The material selection carbon steel or 316L stainless steel of lubricator are to meet
Its corrosion-resistant, erosion resistant working condition requirement.The size of lubricator according to the outer diameter of coiled tubing, underground craft control appliance it is outer
Diameter and length, the height of working window are selected.
Lubricator in the technical solution of the utility model, position can according to the size of underground craft control appliance and again
Amount is selected and is adjusted, including cancellation lubricator, lubricator are placed in above working window or lubricator is placed under working window
Side.For example, operation window is large enough to hold underground craft control appliance, then without using lubricator；Underground craft control appliance compared with
When long and lighter in weight, lubricator is placed in below operation window；When underground craft control appliance is longer and heavier-weight, blowout prevention
Pipe is placed in above operation window.
Preventer in the technical solution of the utility model, for finding and controlling various fluids in production and operating process
Reversed overflow and blowout.Coiled tubing can be cut if necessary and is shunt in a well, and ground installation and the person of operator are protected
Safety.Preventer structure can require to carry out type selecting according to underground gasification process and well control, as single disc, double disc, four flashboards,
Compound flashboard.Preventer requires flange form air-tightness to connect with the type of attachment of well head and upstream equipment.Preventer is entire well
Vital equipment in mouth control system, it is desirable that preventer product passes through stringent sealing performance by API6A and API16A standard
Test, the performance safety to guarantee preventer are reliable.
The operating method of Wellhead Control System described in the utility model, based on having been provided with ISC well pair in subterranean coal
Completion system, the operating method are as follows:
S1: coiled tubing passes through above gooseneck, injection head and blowout prevention box to operation window；
S2: opening working window, installs underground craft control appliance and connect with coiled tubing；
S3: working window is closed, and checks the air-tightness of entire Wellhead Control System；
S4: opening preventer, applies external force by injection head and coiled tubing is delivered to the specified production position of subterranean coal；
S5: preventer sealing coiled tubing annular space is fastened, underground coal gasification(UCG) production is carried out；
S6: unclamping preventer, applies external force by injection head and withdraws coiled tubing, without suspending coal during withdrawing
Underground gasification production；
S7: the underground coal gasification(UCG) that continuous-stable is carried out by repeating above-mentioned S5 and S6 step produces, until consumption is along note
Enter all coal deposits in well.
The operating method of Wellhead Control System described in the utility model further includes generation underground technique control in process of production
The operating method of control equipment fault condition.At this point, underground technology controlling and process can be set by the Wellhead Control System of the utility model
It is standby to withdraw to working window and/or lubricator, preventer is closed, opens working window, and in working window opening to underground technique
Control equipment is repaired and is replaced.Later, it repeats above-mentioned S3-S7 step and carries out underground coal gasification(UCG) production.
The operating method of Wellhead Control System described in the utility model further includes that underground emergency thing occurs in process of production
Therefore the operating method of situation.At this point, coiled tubing and well can be cut by the preventer in the utility model Wellhead Control System
Lower craft control appliance is simultaneously shunt in a well.After the exclusion of underground emergency accident, repeats above-mentioned S1-S7 step and carry out coal underground gas
Metaplasia produces.
According to the utility model, when carrying out underground coal gasification(UCG) production using the Wellhead Control System of the utility model,
No longer need directly to implement in the case where interrupting Underground Coal Gasification Process underground craft control appliance continuously withdraw, equipment
Maintenance and replacement, have ensured the stability of Underground Coal Gasification Process.Meanwhile underground is when there is emergency episode, it can in time, efficiently
Cutting well in equipment and shut-in well, avoid the generation of various potential safety accidents.Entire technological operation is more flexible and convenient, from
And realize continuous, the stable and safe operation of coal underground gasifying technology, progress is brought for the prior art.
Below with reference to the accompanying drawings the embodiments of the present invention are further described.
Fig. 1 is the Wellhead Control System schematic diagram in the technical solution of the utility model.Preventer 8 is connected by flange bolt
Connect the surface for being mounted on well head 9, pass sequentially through from bottom to up later flange bolt and/or union connection installment work window 7 and/
Or lubricator 6, browpiece 5, blowout prevention box 4, injection head 3 and gooseneck 2.To ensure own in Wellhead Control System installation process
The latus rectum of component is accurately positioned at the surface at 9 center of well head.Coiled tubing 1 is oriented to by gooseneck 2, is successively led under upper
Cross the latus rectum of Wellhead Control System other component.Before underground coal gasification(UCG) is implemented, by working window 7 and/or lubricator 6 by underground
Craft control appliance (not marking in figure) is mounted on 1 leading portion of coiled tubing.Later, working window 7 is closed, preventer 8 is opened, so that
Underground process equipment enters underground.Underground process equipment is delivered to specified position reality by the motive force applied by injection head 3
Apply underground coal gasification(UCG).In normal productive process, pull-back forces are applied by injection head 3 and want underground process equipment by technological design
The speed asked is withdrawn, with high safety, efficient and continuous underground coal gasification(UCG).When process equipment failure occurs in underground, lead to
It crosses injection head 3 and applies pull-back forces in the working window 7 of underground process equipment Quick-return to Wellhead Control System, carry out equipment
Maintenance and replacement.When emergency episode occurs in underground, coiled tubing and underground craft control appliance are cut by preventer 8 and carried out
Shut-in well excludes underground failure.
Fig. 2 is the coiled tubing schematic cross-section in the technical solution of the utility model.Wherein, Fig. 2 (a) and (b) are multiple
Coiled tubing scheme is closed, Fig. 2 (c) and (d) are Concentric Coiled Tubing scheme.When underground coal gasification(UCG) is implemented, oxidant passes through company
It is logical by process fluid in coiled tubing 1 that continuous 1 internal oxidition agent channel 10 of oil pipe is delivered to underground reaction zone, coolant and gasifying agent
Road 11 is delivered to underground reaction zone.If selecting composite continuous oil pipe scheme, instrument tubing string 12 is mounted in process flow channel 11,
For coal underground gasifying technology to be monitored and controlled.It at the same time, can be whole in composite continuous oil pipe process flow channel 11
Close 2-10kw cable, the multiple ignition process for subterranean coal.If select Concentric Coiled Tubing, instrument tubing string 12 it is mountable
In oxidant channel 10 or process flow channel 11, for coal underground gasifying technology to be monitored and controlled.
Embodiment described above is a kind of preferable scheme of the utility model, is not made to the utility model any
Formal limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.It is right
For those skilled in the art, without departing from the spirit and principles of the utility model, the variation and adjustment should all be
In the scope of the utility model.
Claims (8)
1. being used for the Wellhead Control System of coal underground gasifying technology, which is characterized in that the Wellhead Control System is from top to bottom
Including such as lower component:
Coiled tubing, for conveying the process fluid and underground craft control appliance of gasification；
Gooseneck is sheathed on coiled tubing, for guiding coiled tubing to enter downstream injection head apparatus；
Injection head is sheathed on gooseneck tube end, for providing injection and power of pulling back to coiled tubing；
Blowout prevention box, being set to injection head downstream for sealing coiled tubing surrounding annular space pressure prevents various fluids in operating process
Reversed spilling；
Working window is set to lubricator downstream, the handling for underground craft control appliance；
Preventer is set to working window downstream and cooperates with well head, for finding and controlling various fluids in production and operating process
Reversed overflow and blowout, can cut coiled tubing if necessary and shunt in a well, and protect ground installation and the person of operator
Safety；
Bracket is detachably set to well head, is used to support entire control system.
2. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: the note
Enter head to replace using snubbing unit, single ISC well is to each self-configuring snubbing unit, and 10-20 ISC well is to matching
Set a vehicle-mounted injection head unit.
3. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: further include
Lubricator positioned at working window below or above and is sheathed on coiled tubing, for being that underground process equipment mentions in cargo handling process
For placement space, and one section of pressure buffer area is provided in operation.
4. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: the company
Continuous oil pipe selects single coiled tubing, Concentric Coiled Tubing or compound continuous oil according to the coal underground gasifying technology that project is selected
Pipe, length selection ensure that coiled tubing can arrive at wellhole development length inside coal seam and coal seam, and outer diameter is according to gasification process
It is required that the fluid flow and pressure drop that calculate are selected, the material of coiled tubing and wall thickness according to the property of coolant used,
The expected Underground Coal Gasification Process cycle of operation, the number of estimated disengaging subterranean coal and fluid flow are selected, including
HDPE composite, carbon steel or 316L stainless steel.
5. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: the goose
Neck tube is equipped with idler wheel, to guide coiled tubing to enter injection head, the mechanism that anti-coiled tubing breaks away is further provided with, so as to even
Continuous oil pipe enters or exits gooseneck along with the tangent direction of gooseneck.
6. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: the note
Entering head includes support frame, the chain transmission system being set on support frame and drive system, and the chain transmission system includes more
Group sprocket wheel and the chain for being provided with grip block for clamping coiled tubing, one chain drive of every group of chain wheel drive and adjacent
The span line of two chains is opposite to be arranged in parallel the oil pipe channel to be formed and be passed through for coiled tubing, and the type selecting of injection head is according to coal
Process for underground gasification design alternative standardized product, including 80,000 pounds, 100,000 pounds, 120,000 pounds and 200,000 pounds of equipment.
7. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: described anti-
Spray box selects single-plicate or twin product to meet the design needs to different gasification process, blowout prevention box and upstream and downstream equipment
Type of attachment requires air-tightness connection, including flange form and union formula, and requires blowout prevention box product by API6A and API16A standard
By stringent experiments of sealing performance, the performance safety to guarantee blowout prevention box is reliable.
8. the Wellhead Control System according to claim 1 for coal underground gasifying technology, it is characterised in that: the work
Make window and be equipped with boll-weevil hanger and tubing seal device to meet the air-tightness requirement of Wellhead Control System under working condition, passes through
Hydraulic device opens and closes working window, and after working window is opened, upper window can be promoted to certain distance to meet underground technique
The handling of equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821756918.9U CN208996714U (en) | 2018-10-29 | 2018-10-29 | Wellhead Control System for coal underground gasifying technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821756918.9U CN208996714U (en) | 2018-10-29 | 2018-10-29 | Wellhead Control System for coal underground gasifying technology |
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| Publication Number | Publication Date |
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| CN208996714U true CN208996714U (en) | 2019-06-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162689A (en) * | 2018-10-29 | 2019-01-08 | 中为(上海)能源技术有限公司 | Wellhead Control System and its operating method for coal underground gasifying technology |
| WO2023105190A1 (en) * | 2021-12-08 | 2023-06-15 | Parson Timothy | A method of syngas production and a system for use in syngas production |
-
2018
- 2018-10-29 CN CN201821756918.9U patent/CN208996714U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162689A (en) * | 2018-10-29 | 2019-01-08 | 中为(上海)能源技术有限公司 | Wellhead Control System and its operating method for coal underground gasifying technology |
| WO2023105190A1 (en) * | 2021-12-08 | 2023-06-15 | Parson Timothy | A method of syngas production and a system for use in syngas production |
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