CN108150136A - A kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ and its application - Google Patents

A kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ and its application Download PDF

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Publication number
CN108150136A
CN108150136A CN201711129385.1A CN201711129385A CN108150136A CN 108150136 A CN108150136 A CN 108150136A CN 201711129385 A CN201711129385 A CN 201711129385A CN 108150136 A CN108150136 A CN 108150136A
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China
Prior art keywords
combustion
oil pipe
pit shaft
tail pipe
pipe
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Application number
CN201711129385.1A
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Chinese (zh)
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CN108150136B (en
Inventor
马春宝
李明
王德伟
尉小明
高玉军
贾财华
于俊梅
马子健
段效威
刘长环
李润富
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201711129385.1A priority Critical patent/CN108150136B/en
Publication of CN108150136A publication Critical patent/CN108150136A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B35/00Methods or apparatus for preventing or extinguishing fires
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/06Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C37/00Control of fire-fighting equipment
    • A62C37/08Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10Releasing means, e.g. electrically released
    • A62C37/11Releasing means, e.g. electrically released heat-sensitive
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/243Combustion in situ

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Business, Economics & Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Fluid Mechanics (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

The present invention provides a kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ and its applications.The fire extinguishing tail pipe includes the first oil pipe and the second oil pipe that concatenate up and down;Wherein, the first oil pipe top is upper sealing material (sealing pressure release valve), and the bottom end of the first oil pipe and the top of the second oil pipe are tightly connected by medium-tight material, and the bottom end of the second oil pipe is tubing seal end;Also, filling ABC powder extinguishing agent in the first oil pipe, the interior filling magnesium carbonate solid of the second oil pipe;Upper sealing material selects the metal material of 660 DEG C of fusing point, and medium-tight material selects the metal material of 600 DEG C of fusing point.When vigorous combustion occurs for pit shaft, releasably a large amount of fire-retardant gas, the control intensity of a fire protect test equipment and casing to fire extinguishing tail pipe of the invention.

Description

A kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ and its application
Technical field
The present invention relates to a kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ and its application, when vigorous combustion occurs for pit shaft When, releasable a large amount of fire-retardant gas control the intensity of a fire, protect test equipment and casing, belong to oilfield safety development field.
Background technology
Situ combustion technology is also known as fireflood, is a kind of production technique that can increase substantially recovery factor of heavy oil reservoir, mainly It is by the use of the heavy component in in-place oil as fuel, by the use of air or oxygen rich gas as combustion adjuvant, takes spontaneous combustion and people The methods of work is lighted a fire makes reservoir temperature reach crude oil burning point, and be continuously injected into combustion adjuvant, makes Crude Oil sustained combustion, and burning is anti- A large amount of heat, heated oil reservoir should be generated so that reservoir temperature rises to 600~700 DEG C, and heavy component cracks at high temperature, note Gas, the light oil of heavy oil pyrolysis generation, the gas of burning generation and the water vapour entered is used to drive crude oil to production well stream It is dynamic, and produced from producing well.
Combustion in situ key technology research is concentrated mainly at present:Ignition method, completion method, tracing method, monitoring side Method, output gas disposal, auxiliary exploitation, profile control closure, indoor simulation etc..Safety in production prediction scheme is also extended through in each of production Link, but the uncertain security risk for always having some non-artificial influences the normal implementation of the technology, as offset well steams before lighting a fire Channeling conductance causes this well temperature to increase oxidizing fire, and oil reservoir, which returns oil, leads to well cylinder roasting etc..Do not have once temperature in wellbore is excessively high Timely processing is obtained, the lighter may damage test equipment, and severe one may burn out casing and cementing concrete, scrap producing well.
In the prior art, generally up to 800 DEG C, safe heatproof is usually no more than the instantaneous heatproof of combustion in situ high temperature resistance instrument 600 DEG C, to reach the purpose of protection test equipment and oil well, bottom hole temperature (BHT) must be controlled below 600 DEG C.Some wells are gone back in early period Steam preheating stratum is needed, down-hole ambient temperature is sometimes up to 300 DEG C.Because the complicated factors such as underground high temperature, high pressure influence, ground Available general fire extinguishing theory, equipment and medicament composition do not adapt to its demand.The Fire extinguishing club outside tubing string is generally arranged at by ruler Very little limitation, Load is generally less, can only play the role of early warning or first arrival first attack, smaller when fire is greater.Water filling, The note fire extinguishing such as nitrogen or carbon dioxide injection process needs the regular hour to prepare.
Through looking into, the relevant report of the anti-pit shaft combustion extinguishment technology of simple and effective combustion in situ is not found.
Invention content
It is an object of the present invention to develop a kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ, protect test equipment and Casing.
Another object of the present invention is to provide a kind of fire extinguishing tail pipe by the present invention to burn for the anti-pit shaft of combustion in situ Method, protect test equipment and casing.
On the one hand, the present invention provides a kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ, including concatenate up and down One oil pipe and the second oil pipe;Wherein, the first oil pipe top is upper sealing material (sealing anti-pressure valve), the bottom end of the first oil pipe and the The top of two oil pipes is tightly connected by medium-tight material, and the bottom end of the second oil pipe is tubing seal end;Also, the first oil pipe Interior filling ABC powder extinguishing agent, the interior filling magnesium carbonate solid of the second oil pipe;Upper sealing material selects the metal material of 660 DEG C of fusing point Material, medium-tight material select the metal material of 600 DEG C of fusing point.
Specific embodiment according to the present invention, it is described fire extinguishing tail pipe total length can be determined according to oil well pocket length, one As 10-80 meters.Upper and lower oil pipe (the first oil pipe and the second oil pipe) can be isometric, can not also be isometric.
Specific embodiment according to the present invention, the ABC powder extinguishing agent may include sodium bicarbonate powder, modified sodium salt One kind in dry powder, sylvite dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder, phosphoric acid dry powder and Amino group powder extinguishing chemical It is or a variety of.Loadings are usually every 0.03 cubic metre of rice bran oil pipe.
Specific embodiment according to the present invention, the second oil pipe is interior to load magnesium carbonate solid, and loadings are per rice bran oil pipe 0.03 Cubic meter.
Specific embodiment according to the present invention, the upper sealing material can for example select metallic aluminium (660 DEG C of fusing point).
Specific embodiment according to the present invention, the medium-tight material can for example select alloy aluminum (fusing point 600 ℃)。
The contact surface of specific embodiment according to the present invention, sealing material and oil pipe can brushing organosilicon heat-resistant lacquer or Other high temperature resistant dopes prevent electrochemical reaction from causing to seal premature failure.
The fire extinguishing tail pipe of the present invention, when use, are mounted in screen casing bottom, are arranged on shaft bottom.When bottom hole temperature (BHT) reaches 540 DEG C when, magnesium carbonate solid decomposes to give off carbon dioxide, to oil pipe internal pressurization;When bottom hole temperature (BHT) reaches 600 DEG C, intermediate seal Fusing is unlocked, to entire oil pipe internal pressurization;When bottom hole temperature (BHT) reaches 660 DEG C, upper sealing fusing is unlocked, dioxy inside oil pipe Change carbon ribbon pressure and spray into upper screen, and pour pit shaft, the control of fire is carried out to pit shaft.
So as to the present invention also provides a kind of fire extinguishing tail pipe by the present invention for the side of the anti-pit shaft burning of combustion in situ Method, this method include fire extinguishing tail pipe of the present invention being mounted on screen casing bottom, are arranged on shaft bottom.
The technology of the present invention is suitable for well wellbore Normal Environmental Temperature at 400 DEG C hereinafter, working as burning oil well temperature up to 600 DEG C or more when (oil well firing temperature is generally lower than 550 DEG C, and fire extinguishing tail pipe is unlikely to destroy under normal circumstances, repeats profit With), fire extinguishing Stern tube seal fusing, built-in chemical agent releases great amount of carbon dioxide foam, is water filling, note nitrogen or note titanium dioxide The pressures such as carbon fire extinguishing process is raced against time, and is protected test equipment and casing, is guaranteed safe production.
Beneficial effects of the present invention:
(1) design is simple, easy to make.
(2) encapsulation amount is big, good extinguishing effect.
(3) disposition is timely, ensures production.
Description of the drawings
Fig. 1 is fire extinguishing tail pipe structure schematic diagram.In figure, 1- sealing pressure release valves, 2- oil pipes A, 3- intermediate seal, 4- oil pipes B.
Specific embodiment
Illustrate the implementation and application effect of the technology of the present invention below in conjunction with specific embodiment, but these embodiments are not intended to It limits the scope of the invention.
Embodiment 1
Fig. 1 is referred to, the anti-pit shaft combustion extinguishment tail pipe structure schematic diagram of combustion in situ for the present invention.As shown in the figure, this The fire extinguishing tail pipe of invention includes the first oil pipe (oil pipe A) 2 and the second oil pipe (oil pipe B) 4 that concatenate up and down;Wherein, the first oil pipe 2 Top is upper sealing material (sealing anti-pressure valve) 1, and the bottom end of the first oil pipe 2 and the top of the second oil pipe 4 pass through intermediate seal material Material 3 is tightly connected, and the bottom end of the second oil pipe 4 is tubing seal end;Also, load ABC powder extinguishing agent (such as in the first oil pipe 2 Sodium bicarbonate powder, modified sodium salt dry powder, sylvite dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder, phosphoric acid dry powder and ammonia Base dry-chemical fire extinguishing), loadings are every 0.03 cubic metre of rice bran oil pipe;Filling magnesium carbonate solid in second oil pipe, loadings are every meter 0.03 cubic metre of oil pipe;Upper sealing material selects the metallic aluminum material of 660 DEG C of fusing point, and medium-tight material selects 600 DEG C of fusing point Metal alloy aluminum material, the contact surface brushing organosilicon heat-resistant lacquer or other high temperature resistant dopes of sealing material and oil pipe, Prevent electrochemical reaction from causing to seal premature failure.
According to oil well pocket length, the oil pipe total length used is determined.
When bottom hole temperature (BHT) reaches 540 DEG C, magnesium carbonate solid decomposes to give off carbon dioxide, to oil pipe internal pressurization.
When bottom hole temperature (BHT) reaches 600 DEG C, intermediate seal fusing is unlocked, to entire oil pipe internal pressurization,
When bottom hole temperature (BHT) reaches 660 DEG C, upper sealing fusing is unlocked, and oil pipe inner silica carbon ribbon pressure sprays into top sieve Pipe, and pit shaft is poured, the control of fire is carried out to pit shaft.
Ground has determined that pit shaft catches fire by the temperature trend shown by temp probe, corresponding in next step to formulate preparation Safety measure is raced against time, and ensures production.
What is finally illustrated is:Above example is merely to illustrate the implementation process and feature of the present invention, and unrestricted is sent out Bright technical solution, although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should Work as understanding:It is still possible to modify or equivalently replace the present invention, without departing from the spirit and scope of the present invention any Modification or part are replaced, and are covered by the protection scope of the present invention.

Claims (7)

1. a kind of anti-pit shaft combustion extinguishment tail pipe of combustion in situ, it is characterised in that:It includes the first oil pipe concatenated up and down and Two oil pipes;Wherein, the first oil pipe top is upper sealing material (sealing pressure release valve), the bottom end of the first oil pipe and the top of the second oil pipe End is tightly connected by medium-tight material, and the bottom end of the second oil pipe is tubing seal end;Also, filling ABC in the first oil pipe Dry powder fire extinguishing agent, the interior filling magnesium carbonate solid of the second oil pipe;Upper sealing material selects the metal material of 660 DEG C of fusing point, intermediate close Closure material selects the metal material of 600 DEG C of fusing point.
2. the anti-pit shaft combustion extinguishment tail pipe of combustion in situ according to claim 1, it is characterised in that:The ABC dry powder goes out Fiery agent may include sodium bicarbonate powder, modified sodium salt dry powder, sylvite dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder, phosphorus It is one or more in sour dry powder and Amino group powder extinguishing chemical.
3. the anti-pit shaft combustion extinguishment tail pipe of combustion in situ according to claim 1, it is characterised in that:The upper sealing material Select the metallic aluminium of 660 DEG C of fusing point.
4. the anti-pit shaft combustion extinguishment tail pipe of combustion in situ according to claim 1, it is characterised in that:The intermediate seal material Material selects the alloy aluminum of 600 DEG C of fusing point.
5. the anti-pit shaft combustion extinguishment tail pipe of combustion in situ according to claim 1, it is characterised in that:Sealing material and oil pipe Contact surface can brushing organosilicon heat-resistant lacquer or other high temperature resistant dopes.
6. the anti-pit shaft combustion extinguishment tail pipe of combustion in situ according to claim 1, it is characterised in that:Fire extinguishing tail pipe total length 10-80 meters.
7. a kind of method of the anti-pit shaft burning of combustion in situ, this method are included claim 1~6 any one of them fire extinguishing tail Pipe is mounted on screen casing bottom, is arranged on shaft bottom.
CN201711129385.1A 2017-11-15 2017-11-15 In-situ combustion well bore combustion preventing fire extinguishing tail pipe and application thereof Active CN108150136B (en)

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CN108150136B CN108150136B (en) 2020-11-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544807A (en) * 2020-04-03 2020-08-18 何希良 Fire extinguisher and filling method thereof
CN112691313A (en) * 2021-01-07 2021-04-23 上海挽追智能科技有限公司 Ignition treatment equipment for out-of-control blowout of oil exploitation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2235301Y (en) * 1995-04-29 1996-09-18 吕文杰 Stationarily-arranged fire-fighting block
CN101596343A (en) * 2009-07-10 2009-12-09 青岛中阳消防科技有限公司 Suspended type ultrafine dry powder extinguishing installation
CN201823202U (en) * 2010-09-29 2011-05-11 新汶矿业集团有限责任公司翟镇煤矿 Safe throwing type self-explored dry powder fire extinguisher
CN102247679A (en) * 2011-04-02 2011-11-23 国安达消防科技(厦门)有限公司 Non-pressure storing automatic fire extinguishing device
CN203175488U (en) * 2013-01-18 2013-09-04 刘镇宇 Oil well fire extinguishing bomb
CN106013706A (en) * 2016-07-07 2016-10-12 安徽国风木塑科技有限公司 Wood-plastic floor capable of preventing and extinguishing fire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2235301Y (en) * 1995-04-29 1996-09-18 吕文杰 Stationarily-arranged fire-fighting block
CN101596343A (en) * 2009-07-10 2009-12-09 青岛中阳消防科技有限公司 Suspended type ultrafine dry powder extinguishing installation
CN201823202U (en) * 2010-09-29 2011-05-11 新汶矿业集团有限责任公司翟镇煤矿 Safe throwing type self-explored dry powder fire extinguisher
CN102247679A (en) * 2011-04-02 2011-11-23 国安达消防科技(厦门)有限公司 Non-pressure storing automatic fire extinguishing device
CN203175488U (en) * 2013-01-18 2013-09-04 刘镇宇 Oil well fire extinguishing bomb
CN106013706A (en) * 2016-07-07 2016-10-12 安徽国风木塑科技有限公司 Wood-plastic floor capable of preventing and extinguishing fire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544807A (en) * 2020-04-03 2020-08-18 何希良 Fire extinguisher and filling method thereof
CN111544807B (en) * 2020-04-03 2021-08-20 何希良 Fire extinguisher and filling method thereof
CN112691313A (en) * 2021-01-07 2021-04-23 上海挽追智能科技有限公司 Ignition treatment equipment for out-of-control blowout of oil exploitation

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