CN101260790B - Wellhead heat insulation and heating equipment for well workover - Google Patents
Wellhead heat insulation and heating equipment for well workover Download PDFInfo
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- CN101260790B CN101260790B CN2008100642667A CN200810064266A CN101260790B CN 101260790 B CN101260790 B CN 101260790B CN 2008100642667 A CN2008100642667 A CN 2008100642667A CN 200810064266 A CN200810064266 A CN 200810064266A CN 101260790 B CN101260790 B CN 101260790B
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- heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 174
- 238000009413 insulation Methods 0.000 title claims description 82
- 239000000178 monomer Substances 0.000 claims description 59
- 230000005855 radiation Effects 0.000 claims description 5
- 239000002196 Pyroceram Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000001012 protector Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 2
- 210000003128 head Anatomy 0.000 description 29
- 238000007710 freezing Methods 0.000 description 13
- 230000008014 freezing Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000283080 Proboscidea <mammal> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
The invention relates to a well-repairing well head temperature insulating heater which is a protector for preventing the ground well head from being frozen in the belt pressure well repairing operation in the extremely cold area of China of the petroleum industry oil extraction input well. The device comprises a diesel power generating set, a heating control cabinet, a triple ram temperature insulating heater, a well head four-way temperature insulating heater and an anti-theft valve temperature insulating heater, wherein, the diesel power generating set is connected with the heating control cabinet through a cable, the heating control cabinet provides the safe voltage for each temperature insulating heater to heat; each temperature insulating heater is detachable and is formed by fixing at least two heating single bodies by fastening bolts, and the heating single bodies are fixed together and can buckle the triple cam or the four-way or the anti-theft valve. The well-repairing well head temperature insulating heater is convenient to assemble and disassemble; when the well-repair operation of the oil extraction input well is stopped at night, the well-repairing well head temperature insulating heater is arranged out of the well head device to heat the well head device which is not be frozen; while in the operation on the next day, the well-repairing well head temperature insulating heater can be disassembled conveniently and construction is normally operated, thereby greatly raising the well-repair construction efficiency.
Description
One, technical field:
What the present invention relates to is that petroleum industry oil-extracting and water-injecting well extremely frigid zones band prevents that the ground well head from producing freezing protector when pressing workover treatment, and what be specifically related to is wellhead heat insulation and heating equipment for well workover.
Two, background technology:
Press in the workover treatment at petroleum industry oil-extracting and water-injecting well band; The main thermal component that the well mouth of oil well device is exposed comprises three flashboards, well head four-way, antitheft valve, the exposed sleeve pipe in ground; Wherein three flashboards below connects the well head four-way; The well head four-way is connected with the exposed sleeve pipe in ground, and two other outlet of well head four-way connects the antitheft valve.Because northeast three elephants all are in the exploitation middle and later periods, oil-extracting and water-injecting well well-repairing work amount is very big, need proceed construction in season in severe winter.By day in the well workover construction, remove work such as oil pipe and can guarantee that the water in underground water and the ground installation fully circulates, do not cause wellhead equipment freezing.Evening, when stopping to construct, cold weather, ground installation heat radiation is very fast, is easy to make the water in the equipment such as three flashboards to freeze.For preventing that wellhead assembly from freezing, after workover treatment stops, at first bleeding off the liquid that is higher than three flashboard positions; But inevitable residual fraction liquid in this valve member of three flashboards; The well head four-way, antitheft valve, the exposed sleeve pipe in ground that are positioned at its below also have liquid, after these liquid are freezing, make second day and continue constructional difficulties; Get rid of freezing fault and need several hrs, had a strong impact on construction speed.Normally carry out for guaranteeing workover treatment; Need implement heat-preserving anti-freezing work to wellhead assembly, but not have under the situation of standing power supply, if select for use solar energy that heat is provided at the well workover scene; Present solar cell finite capacity, energy storage capacity can not satisfy the energy of radiating requirements; If select for use oil burning boiler that heat is provided, but there is fatal shortcoming again in this, and boiler is when stopping workover treatment evening, is that wellhead assembly insulation heating uses, and need stop boiler operatiopn during the daytime workover treatment.This needs the boiler power can not be very big, but hot water circulating pipeline is easy to bursting by freezing when low temperature, if the emptying of pipeline hot water, can cause very big waste again.Therefore it is a kind of under the on-the-spot existence conditions of well workover to be badly in need of development, can heat tracing influence the freezing protector of well head of normal workover treatment again.
Three, summary of the invention:
The purpose of this invention is to provide a kind of wellhead heat insulation and heating equipment for well workover, be used for solving wellhead equipment well workover construction in the winter time, the problem of freezing accident takes place when stopping operation in night.
The technical solution adopted for the present invention to solve the technical problems is: this wellhead heat insulation and heating equipment for well workover comprises diesel generating set, heating control cabinet, three flashboard heat insulation and heating equipments, well head four-way heat insulation and heating equipment, antitheft valve heat insulation and heating equipment; Diesel generating set is connected with the heating control cabinet cable, and heating control cabinet provides safe voltage that above-mentioned each heat insulation and heating equipment is heated;
Above-mentioned each heat insulation and heating equipment is dismountable; Be fixed together through fastening bolt and form by at least two heating monomers; It is identical with the profile of corresponding three flashboards or well head four-way or antitheft valve that each heats the be fixed together shape of the cavity that the back forms of monomer, can three flashboards or well head four-way or the valve of guarding against theft be fastened on wherein; Described heating monomer is a housing, and inner walls has insulation layer, and electrical heating elements is installed in the housing, and housing has connector outward.
When if the exposed sleeve pipe in ground is long; The present invention also comprises the collar piping heat insulation and heating equipment; This heat insulation and heating equipment is dismountable; Be fixed together through fastening bolt and formed by at least two heating monomers, it is identical that each heats the be fixed together profile of shape collar piping of cavity of back formation of monomer, can collar piping be fastened on wherein; Described heating monomer is a housing, and inner walls has insulation layer, and electrical heating elements is installed in the housing, and housing has connector outward.
Heating monomer in the such scheme is two.
Electrical heating elements in the such scheme is infrared radiation heating pipe or electrical heating wire.
Beneficial effect:
1, each heat insulation and heating equipment fixedly forms easy accessibility, both energy conservation by dismountable heating monomer connection among the present invention; Has portability again; When night, the well workover of oil-extracting and water-injecting well stopped operation, the present invention's fastening is installed in outside the wellhead assembly, can be to the wellhead assembly heat tracing; Guarantee that wellhead assembly northeastward in the three elephant winter construction, freezing accident can not take place; And when beginning operation in second day, can easily the present invention be disassembled from wellhead assembly, carry out normal construction, improve the well workover efficiency of construction widely.
2, select diesel generating set for use, solved the on-the-spot problem that does not have standing power supply, easy to use, instantaneity is strong, utilizes heating control cabinet to reduce to safe voltage to voltage simultaneously, with safe voltage wellhead assembly is heated, and guarantees security of operation.
3, through the advance copy invention, continue heat tracing after 14.5 hours at night, 25 ℃ of the measuring point temperature of heat insulation and heating equipment have reached stable state, far above freezing temperature.On second day daytime, wellhead assembly can normally use, and explains that the present invention has reached the heat tracing effect, can satisfy field requirement.
Four, description of drawings:
Fig. 1 is the structural representation of three flashboard heat insulation and heating equipments among the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the sectional view of Fig. 1;
Fig. 4 is the structural representation of well head four-way heat insulation and heating equipment among the present invention;
Fig. 5 is the outline drawing of Fig. 4;
Fig. 6 is the structural representation of antitheft valve heat insulation and heating equipment among the present invention;
Fig. 7 is the outline drawing of Fig. 6;
Fig. 8 is the structural representation of collar piping heat insulation and heating equipment among the present invention;
Fig. 9 is the outline drawing of Fig. 8;
Figure 10 is a circuit block diagram of the present invention.
11 times heating of heating monomer monomer on 1a, 1b, 1c left side heating monomer 2a, 2b, the right heating of 2c monomer 3 insulation layer 4a heating tube 4b, 4c, 4d electrical heating wire 5 cavitys 6 connectors 7 fastening bolts 8 power input sockets 9 cables 10
Five, the specific embodiment:
Below in conjunction with accompanying drawing the present invention is done further explanation:
Embodiment 1:
This wellhead heat insulation and heating equipment for well workover diesel generating set, heating control cabinet, three flashboard heat insulation and heating equipments, well head four-way heat insulation and heating equipment, antitheft valve heat insulation and heating equipment; Diesel generating set is connected with the heating control cabinet cable; Heating control cabinet provides safe voltage that above-mentioned each heat insulation and heating equipment is heated; Heating control cabinet is as the core component that links generating set and each heat insulation and heating equipment; It mainly comprises switch board, anti-explosion terminal box, stube cable and plug etc., and switch board is wherein mainly accomplished functions such as transformation, power division and security protection.
Portable and the energy-conservation requirement of consideration of power demand and device; Present embodiment is selected the diesel generating set of 2 equal-wattages, gives three flashboard heat insulation and heating equipments, well head four-way heat insulation and heating equipment, antitheft valve heat insulation and heating equipment insulation heating through 2 heating control cabinet transformation safe voltages.When environment temperature is higher than-20 ℃, can satisfy heating requirements as long as start 1 generator, so configuration, both energy conservation had increased the portability of installing again, had avoided only selecting a generator powered, the problem that volume is big, heavy.
Fig. 1, Fig. 2, Fig. 3 provide the structural representation of three flashboard heat insulation and heating equipments among the present invention, and be as shown in the figure, in the present embodiment; Three flashboard heat insulation and heating equipments are installed together through fastening bolt 7 make-ups by left and right two heating monomers (1a, 2a); Detachably, left and right two heating monomers are housing, and inner walls has insulation layer 3; Electrical heating elements is installed in the housing, and housing all has connector 6 outward.The inwall of left and right heating monomer (1a, 2a) all designs according to the appearance and size of three flashboards; Left side heating monomer 1a heats monomer 2a to being buckled together with the right side; Fastening bolt 7 is through the through hole of connector 6; Can left and right two heating monomers (1a, 2a) be fixed together, the shape of the cavity 5 that the two back that is fixed together forms is identical with the profile of three flashboards, can three flashboards be fastened on wherein.Because three flashboards have the turnover pipeline,, be the pipeline slot milling so left and right two heating monomers (1a, 2a) connecting portion is in front reserved one section step-like space.Electrical heating elements in the present embodiment is infrared radiation heating pipe 4a, and this heating tube 4a is a U type heating tube, has four, and this heating tube 4a terminals stretch out from installing inside, by power input socket 8 that is arranged in two heating monomer tops and cable 9 power supplies.Certainly the electrical heating elements among the present invention is not limited to infrared radiation heating pipe 4a, and the electrical heating elements of other kinds can.The heat insulating material that respectively heats monomer insulation layer 3 in the present embodiment is selected pyroceram fibre for use, but is not limited to this.Left and right heating monomer (1a, 2a) adopts corrosion resistant plate in the present embodiment in heating tube 4a position, and the galvanized sheet iron manufacturing is adopted in other position.
Fig. 4 and Fig. 5 provide the structural representation of well head four-way heat insulation and heating equipment among the present invention, and be as shown in the figure, in the present embodiment; The well head four-way is installed together through fastening bolt 7 make-ups by left and right two heating monomers (1b, 2b), and is detachable, and left and right two heating monomers are housing; Semicircle; Inner walls has insulation layer 3, and semicircular electrical heating elements is installed in the housing, and housing has connector 6 outward.The inwall of left and right heating monomer (1b, 2b) all designs according to the appearance and size of well head four-way; Left side heating monomer 1b heats monomer 2b to being buckled together with the right side; Fastening bolt 7 is through the through hole of connector 6; Can left and right two heating monomers (1b, 2b) be fixed together, the shape of the cavity 5 that the two back that is fixed together forms is identical with the profile of well head four-way, can the well head four-way be fastened on wherein; Simultaneously left and right two heating monomers (1b, 2b) also are designed with circular hole, and two other outlet of well head four-way is exposed outside through these two holes.Electrical heating elements is electrical heating wire 4b, by being arranged in two power input socket and cable power supplies on the heating monomer.Each heats the heat insulating material of monomer insulation layer 3 and selects pyroceram fibre for use.
Fig. 6 and Fig. 7 provide the structural representation of antitheft valve heat insulation and heating equipment among the present invention, and be as shown in the figure, in the present embodiment; Antitheft valve heat insulation and heating equipment is installed together through fastening bolt 7 make-ups by upper and lower two heating monomers (10,11) and forms; Last heating monomer 10 is lid, and it is the ghost of sealing, and filling heat insulating wall 3 in the ghost; Under heat monomer 11 and be square casing; Inner walls has insulation layer 3, and electrical heating elements is installed in the housing, and upper and lower two heating monomers (10,11) snap together the back profile also for square; The shape of the cavity 5 that forms after upper and lower heating monomer (10,11) is fixed together is identical with the profile of antitheft valve, can the antitheft valve be fastened on wherein.Connector 6 is arranged outside upper and lower two heating monomers (10,11).Identical in the selection of electrical heating elements and insulation layer 3 and mounting means and the well head four-way heat insulation and heating equipment, electrical heating elements is electrical heating wire 4d.According to the wellhead assembly needs, antitheft valve heat insulation and heating equipment is two covers.
The circuit connecting mode of present embodiment: generator cable is connected on the heating control cabinet, when temperature is low need supply power respectively the time, is inserted into respectively on the input socket of the left and right heating monomer of three flashboards (1a, 2a) with the main output plug of two heating control cabinets.When temperature is higher than-20 ℃; During with a generator powered; Be inserted into the main output plug of heating control cabinet on the input socket of the right heating of three flashboards monomer 2a, be inserted into the output plug of the following parallel connection of input socket of the right heating of three flashboards monomer 2a on the input socket of three flashboards left side insulation heating monomer 1a.
During use, four cables are introduced anti-explosion terminal boxs from the explosion-proof inlets of four cables, two copper cash noses of every cable are connected respectively on the left and right line bank two praps of each line bank.After buckling well anti-explosion terminal box, can guarantee junction box inner waterproofing, anti-oil gas etc.
No matter select two still generator powered; Heating control cabinet and well head four-way heat insulation and heating equipment and two cover antitheft valve heat insulation and heating equipment connected modes are identical, all are that other three output plugs with heating control cabinet insert respectively on the input socket of well head four-way heat insulation and heating equipment, two cover antitheft valve heat insulation and heating equipments.
Embodiment 2:
The present embodiment embodiment 1 that compares, present embodiment also comprises the collar piping heat insulation and heating equipment, other identical with embodiment 1 is if when the exposed sleeve pipe in ground is long, choose present embodiment.Fig. 8 and Fig. 9 provide the structural representation of collar piping heat insulation and heating equipment among the present invention; As shown in the figure; Collar piping heat insulation and heating equipment in the present embodiment is dismountable, and by the cylindrical body that left and right two heating monomers (1c, 2c) are fixed together and form through fastening bolt 7, the shape of the cavity that forms after two heating monomers are fixed together is identical with the profile of collar piping; Also be tubular, can collar piping be fastened on wherein; Two heating monomers are semicircular shell, and inner walls has insulation layer 3, and electrical heating elements is installed in the housing, and housing has connector 6 outward.Identical in the selection of electrical heating elements and insulation layer 3 and mounting means and the well head four-way heat insulation and heating equipment, electrical heating elements is electrical heating wire 4c.
The present invention can also be three or four with the heating monolithic design, heats monomer accordingly and snaps together formation through fastening bolt 7.
Figure 10 is a circuit block diagram of the present invention, and it provides the present invention's circuit connecting relation generally, and all circuit among the present invention are connected to known technology.
The present invention is designed to traditional heater dismountable, when night, the well workover of oil-extracting and water-injecting well stopped operation, the present invention's fastening is installed in outside the well head attemperator; Fastening with fastening bolt 7, connect then electrical distribution system is installed, start diesel-driven generator; Utilize heating control cabinet to reduce to safe voltage to voltage; With safe voltage wellhead assembly is heated, security of operation makes the well head attemperator also freezing accident can not take place at chill night; And when beginning operation in second day, can easily the present invention be disassembled from the well head attemperator, carry out normal construction, improve the well workover efficiency of construction widely.
In order to test heat tracing effect of the present invention, utilize embodiment 1 to carry out indoor, outdoor test respectively, test is this time carried out for maintaining secrecy, and the participant is inventor of the present invention.
Laboratory test: laboratory test reaches after the stable state; Three flashboards left side heating monomer electric heating tube 4a temperature reaches 148.2 ℃; The right heating of three flashboards monomer electric heating tube 4a temperature reaches 196.5 ℃; Well head four-way heat insulation and heating equipment inner wall temperature is 127.9 ℃, and antitheft valve heat insulation and heating equipment inner wall temperature is 74.3 ℃.During laboratory test, the outside wall temperature of three flashboard heat insulation and heating equipments, well head four-way heat insulation and heating equipment and antitheft valve heat insulation and heating equipment is near room temperature.The heat insulation effect of all heat insulation and heating equipments of result of the test explanation is fine, has reached INSULATION DESIGN purpose of the present invention.
Outdoor test: first day 17:30 divide divide to 18:02 carry out field trial during, temperature continues to raise because outside temperature is-11.6 ℃, heat convection is strong, temperature rise is slower.Test duration to the second day 8:00 branch continued heat tracing after 14.5 hours, and the measuring point temperature of three flashboards, well head four-way, antitheft valve all about 20 ℃, has reached stable state, far above freezing temperature.Second day 8:35 branch, wellhead assembly can normally use, and explains that the present invention has reached the purpose of insulation heating, satisfies the needs that band is pressed workover treatment.
Claims (5)
1. wellhead heat insulation and heating equipment for well workover is characterized in that: this wellhead heat insulation and heating equipment for well workover comprises diesel generating set, heating control cabinet, three flashboard heat insulation and heating equipments, well head four-way heat insulation and heating equipment, antitheft valve heat insulation and heating equipment; Diesel generating set is connected with the heating control cabinet cable, and heating control cabinet provides safe voltage that above-mentioned each heat insulation and heating equipment is heated;
Above-mentioned each heat insulation and heating equipment is dismountable; Be fixed together through fastening bolt (7) and form by at least two heating monomers; It is identical with the profile of corresponding three flashboards or well head four-way or antitheft valve that each heats the be fixed together shape of the cavity that the back forms of monomer, can three flashboards or well head four-way or the valve of guarding against theft be fastened on wherein; Described heating monomer is a housing, and inner walls has insulation layer (3), and electrical heating elements is installed in the housing, and housing has connector (6) outward;
Diesel generating set is 2, is safe voltage through 2 heating control cabinets with the voltage transformation, when temperature is low need supply power respectively the time, is inserted into respectively on the input socket of the left and right heating monomer of three flashboards (1a, 2a) with the main output plug of two heating control cabinets; When temperature is higher than-20 ℃; During with a generator powered; Be inserted into the main output plug of heating control cabinet on the input socket of three flashboards right heating monomers (2a), be inserted into the output plug of the following parallel connection of the input socket of three flashboards right heating monomers (2a) on the input socket of three flashboards left side insulation heating monomers (1a).
2. wellhead heat insulation and heating equipment for well workover according to claim 1; It is characterized in that: also comprise the collar piping heat insulation and heating equipment; This heat insulation and heating equipment is dismountable; Be fixed together through fastening bolt (7) and formed by at least two heating monomers, it is identical with the profile of collar piping that each heats the be fixed together shape of the back cavity of formation of monomer, can collar piping be fastened on wherein; Described heating monomer is a housing, and inner walls has insulation layer (3), and electrical heating elements is installed in the housing, and housing has connector (6) outward.
3. wellhead heat insulation and heating equipment for well workover according to claim 1 and 2 is characterized in that: described heating monomer is two or three or four.
4. wellhead heat insulation and heating equipment for well workover according to claim 1 and 2 is characterized in that: described electrical heating elements is infrared radiation heating pipe or electrical heating wire.
5. wellhead heat insulation and heating equipment for well workover according to claim 1 and 2 is characterized in that: the heat insulating material of described heating monomer insulation layer (3) is selected pyroceram fibre for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100642667A CN101260790B (en) | 2008-04-11 | 2008-04-11 | Wellhead heat insulation and heating equipment for well workover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100642667A CN101260790B (en) | 2008-04-11 | 2008-04-11 | Wellhead heat insulation and heating equipment for well workover |
Publications (2)
| Publication Number | Publication Date |
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| CN101260790A CN101260790A (en) | 2008-09-10 |
| CN101260790B true CN101260790B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100642667A Expired - Fee Related CN101260790B (en) | 2008-04-11 | 2008-04-11 | Wellhead heat insulation and heating equipment for well workover |
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| CN (1) | CN101260790B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305042A (en) * | 2011-07-27 | 2012-01-04 | 中国石油天然气股份有限公司 | Anti-freezing process of blowout prevention pipe and cable matched with water injection well test |
| CN108204222A (en) * | 2016-12-16 | 2018-06-26 | 中国石油天然气股份有限公司 | Temperature control device and method for water injection well insulated building |
| CN108513371B (en) * | 2018-02-13 | 2024-08-02 | 耀能（上海）节能科技股份有限公司 | Heating device |
| CN108729876B (en) * | 2018-06-22 | 2024-07-26 | 中铁隧道集团二处有限公司 | Shaft mouth heat preservation shed and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209197U (en) * | 1987-06-10 | 1988-08-24 | 乌鲁木齐市建筑装饰材料厂 | Infrared heating insulation device for petroleum |
| CA2011569A1 (en) * | 1990-03-06 | 1991-09-06 | Mark Jenkins | Thermal blanket for well-heads, blow-out preventors and the like |
| US5049724A (en) * | 1989-04-12 | 1991-09-17 | Anderson Robert A | Thermal protection blanket for a blow out preventor |
| US6032732A (en) * | 1998-04-27 | 2000-03-07 | Yewell; Ronald E. | Well head heating system |
| CN2818767Y (en) * | 2005-07-31 | 2006-09-20 | 王北方 | Thermal-insulator at well opening |
| CN2918724Y (en) * | 2005-04-19 | 2007-07-04 | 新疆华易石油工程技术有限公司 | Explosion-proof heating insulation can of oil well head |
| CN200940472Y (en) * | 2006-07-28 | 2007-08-29 | 中国石油天然气股份有限公司 | Explosion-proof heating and heat-insulating box for oil-water well head |
-
2008
- 2008-04-11 CN CN2008100642667A patent/CN101260790B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209197U (en) * | 1987-06-10 | 1988-08-24 | 乌鲁木齐市建筑装饰材料厂 | Infrared heating insulation device for petroleum |
| US5049724A (en) * | 1989-04-12 | 1991-09-17 | Anderson Robert A | Thermal protection blanket for a blow out preventor |
| CA2011569A1 (en) * | 1990-03-06 | 1991-09-06 | Mark Jenkins | Thermal blanket for well-heads, blow-out preventors and the like |
| US6032732A (en) * | 1998-04-27 | 2000-03-07 | Yewell; Ronald E. | Well head heating system |
| CN2918724Y (en) * | 2005-04-19 | 2007-07-04 | 新疆华易石油工程技术有限公司 | Explosion-proof heating insulation can of oil well head |
| CN2818767Y (en) * | 2005-07-31 | 2006-09-20 | 王北方 | Thermal-insulator at well opening |
| CN200940472Y (en) * | 2006-07-28 | 2007-08-29 | 中国石油天然气股份有限公司 | Explosion-proof heating and heat-insulating box for oil-water well head |
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| Publication number | Publication date |
|---|---|
| CN101260790A (en) | 2008-09-10 |
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