CN105649591B - A kind of discardable inner-spiral type igniter of combustion in situ - Google Patents
A kind of discardable inner-spiral type igniter of combustion in situ Download PDFInfo
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- CN105649591B CN105649591B CN201610126918.XA CN201610126918A CN105649591B CN 105649591 B CN105649591 B CN 105649591B CN 201610126918 A CN201610126918 A CN 201610126918A CN 105649591 B CN105649591 B CN 105649591B
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- burner
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- fuel
- spiral type
- oil
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 36
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 36
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 18
- 239000004449 solid propellant Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000020 Nitrocellulose Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 229920001220 nitrocellulos Polymers 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920001661 Chitosan Polymers 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 229940037003 alum Drugs 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 3
- 239000003349 gelling agent Substances 0.000 claims description 3
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 3
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010903 husk Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 229960004011 methenamine Drugs 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 2
- 229910000514 dolomite Inorganic materials 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 7
- 230000002269 spontaneous effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003721 gunpowder Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of combustion in situ can drop inner-spiral type igniter, including the casing that lengthwise extends, has for extending into the end of ignition location and for stretching out the starting point outside well；Instlated tubular in casing is set；Oil pipe in instlated tubular is set；The burner of oil pipe lower end is set；First annular space is formed between casing and instlated tubular, forms the second annular space between instlated tubular and oil pipe, is provided in first annular space for fixing instlated tubular and completely cutting off the packer of heat.A kind of combustion in situ of the present invention can drop inner-spiral type igniter, without considering the recycling problem of burner；Extend heavy crude reservoir oil layer ignition device fuel combustion time, and then improve ignition effectiveness, improves fireflood effect.
Description
[technical field]
The invention belongs to the Technology of Heavy Oil Recovery fields, and in particular to a kind of discardable inner-spiral type igniting dress of combustion in situ
It sets.
[background technique]
Combustion in situ is a kind of effective technology for improving recovery ratio, and can just have more complicated ground than steam drive
It is applied under the conditions of layer.Oil layer ignition technology is one of the key technology in combustion in situ technique.Combustion drive firing technique has layer
Interior spontaneous ignition and two kinds of manual firing.For spontaneous ignition, field test shows that combustion is lighted and established in oil-bearing layer
It is then several days short to burn leading edge the time it takes, more to be then up to tens days, the physical property and change of the time view in-place oil of cost
It studies point and different.Spontaneous ignition does not need additional any ignition installation, if reservoir temperature is lower, or preparation carries out burning oil
The oil reservoir of layer contains oxidation crude oil in distress, it cannot be guaranteed that spontaneous combustion in the short time, at this moment will provide heat from outside, by ignition well well
Bottom surrounding area is heated to the ignition temperature of in-place oil, and oxidant is infused in the backward area, to accelerate the spontaneous combustion speed of oil reservoir.
It can be used currently, outer heating load lights oil reservoir: gaseous fuel heater, liquid fuel heater, electric heater.Through
Overtesting shows successfully light oil reservoir using these methods, but all there is structure is complicated, complicated ask of constructing
Topic has needed igniter out especially at the end of igniting, and pressure oscillation in pit shaft is caused to produce to generate tempering, burn out casing
It is raw dangerous.Accordingly, it is desirable to provide it is a kind of cheap, efficiently, safety, the simple and easy discardable baked wheaten cake oil for remotely lighting a fire
Layer igniter.
[summary of the invention]
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of combustion in situ
Discardable inner-spiral type igniter, without considering the recycling problem of burner, to realize to the efficient of heavy crude reservoir, safety,
Simple and easy long-range igniting improves fireflood effect.
The invention adopts the following technical scheme:
A kind of discardable inner-spiral type igniter of combustion in situ, including the casing that lengthwise extends, with for protruding into
To the end of ignition location and for stretching out the starting point outside well；Instlated tubular is provided in described sleeve pipe；In the instlated tubular
Inside it is provided with oil pipe；The oil pipe lower end is provided with burner, which is located at oil reservoir；Between described sleeve pipe and instlated tubular
First annular space is formed, the second annular space is formed between the instlated tubular and oil pipe, is arranged in the first annular space
There is packer, the heat for fixing instlated tubular and by burner combustion when generates insulates the lower part between thermal insulator and casing
Space.
As the preferred embodiment of the present invention, the burner includes shell, and the inner wall of the shell is that internal projection is spiral
Structure, for extending the burning time of fuel.
As the preferred embodiment of the present invention, the shell of burner is porous structure, and the shell is made of combustible material,
The burning point of the combustible material is higher than the burning point of the fuel installed in burner, after igniter starting, fuel combustion, and temperature liter
Height lights shell.
As the preferred embodiment of the present invention, the thermometric galvanic couple of monitoring reservoir temperature is provided in the burner, it is described
Burner lower end is provided with warhead shape target seeker, the target seeker be provided with igniter head for control light in the burner
Fuel.
As the preferred embodiment of the present invention, connected between the burner and oil pipe by clamper, the clamper
The lower end of upper end connected pipes by way of screw thread, the clamper passes through clamping device connection and fixed burner.
As the preferred embodiment of the present invention, the clamper includes upper coupling part and clamping device, the clamper
By upper coupling part connected pipes, the clamping device includes upper and lower two parts for upper end, and the upper and lower two parts pass through metal
Bar connection.
As the preferred embodiment of the present invention, the lower free end of the instlated tubular is set as horn opening, increases oil
Pipe plays down space with burner.
As the preferred embodiment of the present invention, as needed, it is injected in second annular space combustion-supporting for oil reservoir
Imflammable gas or air.
As the preferred embodiment of the present invention, charged in the burner as industrial solid fuel slug, multi-purpose solid
Fuel or solid methanol fuel.The industrial solid fuel slug is oil substances, by methenamine (hexa) and
Stearic acid or paraffin are made, or by low-boiling point alcohol, carboxylic esters, alkane, aromatic hydrocarbon or their mixture and gelling agent, flame
Regulator, bulk system at；The multi-purpose solid fuel mainly by base-material and helps fuel composition, base-material be selected from gangue, sawdust,
One of rice husk, combustion-supporting material be selected from dolomite, clinker, di-iron trioxide, sodium nitrate, lime, sodium bicarbonate, alum, sawdust,
One of iron oxide red, garbage sludge；The solid methanol fuel is mainly greater than 95% industry by nitrocellulose, purity
Methanol, polyacrylic acid Chitosan Ester and water composition, fuel value are greater than 18kJ/g, and burning time is greater than 75min/100g.
Compared with prior art, the present invention at least has the advantages that igniter of the present invention includes burner position
In oil reservoir, burner is provided with fuel, and the igniting of combustion in situ is realized by the burning of fuel, substantially increases operating efficiency,
Simultaneously the thermometric galvanic couple that is connect with terminal can temperature at real-time monitoring oil reservoir, high degree of automation is simple to operate.
[Detailed description of the invention]
Fig. 1 is mounting structure schematic diagram of the invention；
Fig. 2 is the structure chart of burner of the present invention；
Fig. 3 is the longitudinal sectional drawing of burner of the present invention；
Fig. 4 is the transverse cross-sectional view of burner of the present invention；
Fig. 5 is holder structure figure of the present invention；
Fig. 6 is gripper device figure of the present invention.
Wherein: 1. cables；2. oil pipe；3. instlated tubular；4. casing；5. packer；6. burner；7. first annular space；
8. the second annular space；9. clamper；10. burner housing；11. spiral inner wall；12. target seeker；13. igniter head；14. surveying
Warm galvanic couple；15. conducting wire；Coupling part on 16.；17. metallic rod；18. clamping device；19. screw.
[specific embodiment]
The present invention provides a kind of combustion in situ can drop inner-spiral type igniter, and integral installation operational version is as schemed
It shown in 1, specifically includes: casing 4, instlated tubular 3, oil pipe 2, packer 5, clamper 9, burner 6.Wherein, instlated tubular 3 is set in
Outside oil pipe 2, the second annular space 8 is formed between oil pipe 2, imflammable gas can be injected into well by the second annular space 8
Or air, it can be directly injected into stratum, it is combustion-supporting for oil reservoir.Casing 4 is set in outside instlated tubular 3, forms first between instlated tubular 3
Annular space 7, packer 5 is arranged among first annular space 7, for fixing instlated tubular 3 and resting on heat under packer
Side space, heat losses when preventing lower burner 6 from burning.The lower end of oil pipe 2 is arranged in burner 6, please refer to Fig. 2, Fig. 3 and
Shown in Fig. 4,1 one end of cable is connect with terminal and power supply, and power supply, which is used to light a fire to burner 6, provides the energy, passes through terminal control
Fuel in point burner 6, the other end are connect with burner 6, and the conducting wire 15 by being close to 6 outer wall of burner connects burner
6 specific component-thermometric galvanic couple 14 and igniter head 13.
Burner 6 specifically includes: porous structure burner housing 10, spiral inner wall 11, warhead shape burner target seeker
12, igniter head 13, thermometric galvanic couple 14 etc..
Burner housing 10 uses porous structure, by the burning for the porous structure that flammable but slow burning velocity material is constituted
Device shell, heat when porous structure is conducive to fuel combustion are transmitted and make full combustion of fuel, and material constitutive characteristic, which highlights it, to be lost
Characteristic is abandoned, without considering the recycling problem of burner.
Burner inner wall 11 uses inner-spiral type, is conducive to extend the burning time of fuel, improves oil layer ignition efficiency.
Target seeker 12 is arranged in 6 lower end of burner, and warhead shape head is easier oil pipe 2 across instlated tubular 3,
When needing lower oil tube 2, for the collision for avoiding oil pipe 2 Yu 3 lower end of instlated tubular, loudspeaker can be set by the bottom of instlated tubular 3
Mouth, to increase the down space of oil pipe 2 and burner 6.
13 connecting resistance silk of igniter head, above covers gunpowder, is connected by patch 6 outer wall conducting wire 15 of burner with cable 1, for combustion
The igniting of 6 fuel of burner.Thermometric galvanic couple 14 is located at 6 upper end of burner, by the conducting wire 15 and cable 1 that paste 6 outer wall of burner
It is connected with terminal, for real-time monitoring downhole temperature to be sent to terminal.
Burner 6 is located at 2 lower end of oil pipe, is connected by clamper 9 with oil pipe 2, and realization burner 6 is indirect with oil pipe 2
It is connected.Clamper 9 is arranged in instlated tubular 3, and instlated tubular 3 is located at outside oil pipe 2, please refers to shown in Fig. 5 and Fig. 6, and clamper 9 is specific
Include: upper 16 upper end of coupling part threadably connected pipes 2, and prevent the flame of burner 6 from entering oil pipe 2, burns oil
Pipe 2.Upper 16 lower end of coupling part is connected with clamping device 18 by metallic rod 17, and metallic rod 17 connects up and down the two of clamper 9
Part is connect by clamping device 18 with burner 6, to a certain extent can also be with fixed burner 6.Clamping device 18 is circle
Equipped with opening, with method of clamping fixed burner 6, opening is provided with the screw 19 for fastening enhancing clamping.
Charging in burner 6 includes: industrial solid fuel slug, multi-purpose solid fuel and solid methanol fuel three classes,
It is needed to select one or more of them according to on-site actual situations.
Industrial solid fuel slug is white shape solid, can be by methenamine (hexa) and stearic acid or paraffin system
At can also be by low-boiling point alcohol, carboxylic esters, alkane, aromatic hydrocarbon or their mixture and gelling agent, flame regulator, bulk body
Etc. being made, which has sale in the market, such as Shenyang City Dongling Chemical Co., Ltd..The industrial solid fuel slug
Be easy to light, flame size is uniform, calorific value is high, flame is uniform, easy to carry, nontoxic, free from extraneous odour when burning, it is pollution-free,
The advantages that safe, at low cost, industrial solid fuel slug used are oil substances, and the immersion of water does not have shadow to its flammable performance
It rings, also, when lighting, pressure-air will be blowed into well, which can exhaust hydraulic pressure, guarantee fuel slug
The anhydrous environment of surrounding.
Multi-purpose solid fuel includes base-material and combustion-supporting material, and base-material includes gangue, sawdust, rice husk etc.；Combustion-supporting material includes white
Marble, clinker, di-iron trioxide, sodium nitrate, lime, sodium bicarbonate, alum, sawdust, iron oxide red, garbage sludge.The product
With easily, firepower is strong, the characteristics such as calorific value height.
Solid methanol fuel includes: nitrocellulose, and industrial methanol (purity > 95%), (shell is poly- for polyacrylic acid Chitosan Ester
The high water absorption high molecular material that sugar and acroleic acid polymerization obtain), water；Product characteristic is specific as follows:
(1) this product calorific value is high, and burning time is long.Combustion heat value reach 18kJ/g, in standard burner burning time be more than
75min/100g；
(2) the phenomenon that this product is not in separation of solid and liquid, period of storage are long；
(3) this product uses composite curing agent polyacrylic acid Chitosan Ester, instead of single nitrocellulose curing agent, uses
Nitrocellulose starting material is few, and production carries out at normal temperature, does not need heat source, can reduce the danger that production process is stored with raw material,
Safety and environmental protection；
(4) do not melt when this product is burnt, do not scatter, free from extraneous odour, flame stabilization is in light blue, to stove without any corrosion
Property, without ashes after burning.
Fuel in burner 6 is calculated using the following equation in the heat Q that heat transfer is needed with heated oil reservoir under advection heat:
Q=π H (rc 2-rp 2)(ρc)ΔT1, wherein H is core intersection, rpFor well radius, rcFor heating radius,ΔT1=T1-T0For oil reservoir
Temperature, T need to be improved1Temperature after heating, T0To heat preceding temperature, ρ c is the heat capacity of volume of oil reservoir.
Ignition mechanism and operating procedure of the invention will be further described below
1 one end of cable connects power supply, and one end connects burner 6, and igniter head 13 is supplied by 15 connecting cable 1 of conducting wire
Electricity, igniter head 13 light the gunpowder of covering thereon after being powered, further put the fuel stored in burner 6, thus success
Igniting.
The operating procedure of embodiment: clamper 9 passes through clamping by upper coupling part 16 threadably connected pipes 2
Device 18 clamps burner 6, and by entire igniter tripping in ignition well, cable 1 powers on, and passes through patch 6 outer wall of burner
Conducting wire 15 connects igniter head 13, and ignite the gunpowder of covering thereon, to put the fuel in burner 6.Instlated tubular 3 is set in oil
Except pipe 2, the second annular space 8 is formed between oil pipe 2, imflammable gas can be injected into well by the second annular space 8
Or air, it is combustion-supporting for oil reservoir.Thermometric galvanic couple 14 passes through 15 connecting cable 1 of conducting wire, real-time monitoring downhole temperature, to adjust note
Tolerance and gas injection speed achieve the purpose that control downhole temperature.6 inner wall of burner is inside spin, is conducive to extend fuel combustion
Time；Burner housing 10 uses porous structure, by the burner for the porous structure that flammable but slow burning velocity material is constituted
Shell, heat when porous structure is conducive to fuel combustion are transmitted and make full combustion of fuel, and burner housing is flammable, and fuel sufficiently fires
It burns, when certain temperature to be achieved, burner housing 10 is further heated burning to oil reservoir.Fuel and burner 6 burn
In the process in clamper 9, ignition process will not be interrupted because falling shaft bottom.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of combustion in situ can drop inner-spiral type igniter, it is characterised in that: the casing (4) including lengthwise extension,
With the end for extending into ignition location and for stretching out the starting point outside well；It is provided in described sleeve pipe (4) heat-insulated
It manages (3)；Oil pipe (2) are provided in the instlated tubular (3)；The oil pipe (2) lower end is provided with burner (6), the burning
Device (6) is located at oil reservoir；It is formed between described sleeve pipe (4) and instlated tubular (3) first annular space (7), the instlated tubular (3) and oil
Formed the second annular space (8) between pipe (2), be provided with packer (5) in the first annular space (7), for it is fixed every
Heat pipe (3) and the heat that generates insulates the lower space between packer (5) and casing (4) when burner (6) burn；Institute
It states and is connect between burner (6) and oil pipe (2) by clamper (9), clamper (9) upper end is connected by way of screw thread
The lower end of oil pipe (2), the clamper (9) passes through clamping device (18) connection and fixed burner (6)；Clamper (9) packet
Coupling part (16) and clamping device (18) are included, the clamping device includes upper and lower two parts, and the upper and lower two parts pass through
Metallic rod (17) connection, clamping device (18) upper end passes through upper coupling part (16) connected pipes (2).
2. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: the combustion
Burner (6) includes shell, and the inner wall of the shell is internal projection sped structure, for extending the burning time of fuel.
3. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: burner
Shell be porous structure, and the shell is made of combustible material, installs in a little higher than burner of the burning point of the combustible material
The burning point of fuel.
4. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: the combustion
The thermometric galvanic couple (14) of monitoring reservoir temperature is provided in burner, the burner lower end is provided with warhead shape target seeker (12),
The target seeker (12) is provided with igniter head (13) for controlling the fuel lighted in the burner (6).
5. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: it is described every
The lower free end of heat pipe (3) is set as horn opening, and increase oil pipe (2) and burner (6) plays down space.
6. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: according to need
It wants, is injected with the imflammable gas or air combustion-supporting for oil reservoir in second annular space (8).
7. a kind of combustion in situ according to claim 1 can drop inner-spiral type igniter, it is characterised in that: the combustion
It charges in burner as industrial solid fuel slug, multi-purpose solid fuel or solid methanol fuel.
8. a kind of combustion in situ according to claim 7 can drop inner-spiral type igniter, it is characterised in that: the work
Industry solid burning block is oil substances, is made of methenamine (hexa) and stearic acid or paraffin, or by low
Boiling point alcohol, carboxylic esters, alkane, aromatic hydrocarbon or their mixture and gelling agent, flame regulator, bulk system at；
The multi-purpose solid fuel mainly by base-material and helps fuel composition, and base-material is selected from one of gangue, sawdust, rice husk,
Combustion-supporting material is selected from dolomite, clinker, di-iron trioxide, sodium nitrate, lime, sodium bicarbonate, alum, sawdust, iron oxide red, rubbish
One of sludge；
The solid methanol fuel is mainly greater than 95% industrial methanol, polyacrylic acid Chitosan Ester by nitrocellulose, purity
It is formed with water, fuel value is greater than 18kJ/g, and burning time is greater than 75min/100g.
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