CN106194139B - The ignition method of combustion in situ - Google Patents
The ignition method of combustion in situ Download PDFInfo
- Publication number
- CN106194139B CN106194139B CN201610537229.8A CN201610537229A CN106194139B CN 106194139 B CN106194139 B CN 106194139B CN 201610537229 A CN201610537229 A CN 201610537229A CN 106194139 B CN106194139 B CN 106194139B
- Authority
- CN
- China
- Prior art keywords
- oil reservoir
- target oil
- igniting
- igniting target
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 55
- 239000007924 injection Substances 0.000 claims abstract description 55
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002671 adjuvant Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 6
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 145
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003434 inspiratory effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Regulation And Control Of Combustion (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
The present invention provides a kind of ignition method of combustion in situ, includes the following steps：Determine igniting target oil reservoir.In the given time, air is injected into igniting target oil reservoir by injection well, so that in igniting target oil reservoir there is enough oxygen to support burning.The casing of injection well is sprayed in igniting target oil reservoir lower part using hydraulic ejector, to form through-hole on casing.After the through-hole of casing runs through, the through-hole on casing is passed through using hydraulic ejector, is drilled to igniting target oil reservoir lower part.It after drilling is completed in igniting target oil reservoir lower part, lights a fire to igniting target oil reservoir lower part, so that the hot exhaust gas generated after igniting is gradually crept up to entire igniting target oil reservoir, so that igniting target oil reservoir burning.It successful ignition, progress fireflood viscous crude can be more easy to light non-homogeneous pay compared to more traditional ignition method in heterogeneous oil reservoir using the ignition method of combustion in situ of the present invention.
Description
Technical field
The present invention relates to technical field of petroleum extraction, and in particular to a kind of ignition method of combustion in situ.
Background technology
In combustion in situ, ignition method usually can influence whether combustion in situ succeeds.Combustion in situ igniting side at present
There are mainly two types of methods.The first chemical point pyrogenic process recycles chemical reagent to make after can preheating oil reservoir by high-temperature steam first
Oil reservoir is promoted to rapidly the self-ignition point of crude oil, finally so that oil reservoir burning.Second of steam injection self-ignition point pyrogenic process, will pass through steam
After preheating oil reservoir, air is persistently injected, using air oxidation crude oil heat release, the temperature of oil reservoir is stepped up, lights oil reservoir.This two
Kind sparking mode has the example of successful application in Oil production sites.
It is well known that it is entirely uniform dielectric layer that the plane of oil reservoir, which is not, if the thin place of oil-containing in oil reservoir
Light a fire, since the thin place of oil-containing in oil reservoir has the obstruction of rock etc., can cause combustion in situ igniting it is unsuccessful or
Firewire after igniting cannot push ahead well, and then cause the recovery ratio of crude oil relatively low, seriously affect production.
Invention content
The present invention provides a kind of ignition method of combustion in situ, can be non-using the ignition method of combustion in situ of the present invention
Successful ignition in the oil reservoir of homogeneous carries out fireflood viscous crude, is more easy to light non-homogeneous pay compared to more traditional ignition method.
Following technical proposal can be used to realize in the above-mentioned purpose of the present invention：
The present invention provides a kind of ignition method of combustion in situ, includes the following steps：
Determine igniting target oil reservoir；
In the given time, air is injected into the igniting target oil reservoir by injection well, so that the igniting mesh
Marking in oil reservoir, there is enough oxygen to support burning；
The casing of the injection well is sprayed in the igniting target oil reservoir lower part using hydraulic ejector, in institute
It states and forms through-hole on casing；
After the through-hole of described sleeve pipe runs through, the through-hole in described sleeve pipe is passed through using hydraulic ejector, to the igniting
Target oil reservoir lower part drills；
After drilling is completed in igniting target oil reservoir lower part, light a fire to igniting target oil reservoir lower part, with
So that the hot exhaust gas generated after igniting is gradually crept up to entire igniting target oil reservoir, so that the igniting target oil reservoir
Burning.
In one embodiment, determine that igniting target oil reservoir includes：
Obtain the practical percent inspiration of each oil reservoir in oil reservoir；
Obtain the theoretical percent inspiration of each oil reservoir；
Seek the exhausted of the practical percent inspiration of each oil reservoir and the difference of the theoretical percent inspiration of each oil reservoir
To value；
The absolute value of the difference is obtained into ratio compared with the practical percent inspiration of each oil reservoir；
When the ratio is less than 50%, and the thickness of oil reservoir is more than 1 meter, then judge the oil reservoir for igniting target oil
Layer.
In one embodiment, carrying out drilling to igniting target oil reservoir lower part includes：
When being less than or equal to 0.5 meter apart from the injection well, using the hydraulic ejector to the igniting target oil reservoir
Lower part injection water drills；
When being more than 0.5 meter apart from the injection well, and being less than or equal to 5 meters apart from the injection well, the waterpower is utilized
Injector sprays chemical combustion adjuvant to drill to igniting target oil reservoir lower part；
When being more than 5 meters apart from the injection well, sprayed to igniting target oil reservoir lower part using the hydraulic ejector
Jetting drills.
In one embodiment, the chemical combustion adjuvant includes：Diesel oil, potassium permanganate and thiocarbamide, wherein diesel oil
Content accounts for 98%.
In one embodiment, the emitted dose of the chemical combustion adjuvant is：
Q=π [(0.5+x)2-0.52]hΦ；
Wherein, the value range of x is 0.2m-0.4m, and the oil saturation of x and oil reservoir is inversely proportional；H is expressed as oil reservoir thickness
Degree, unit：m；Φ indicates the porosity of oil reservoir.
In one embodiment, the injection well described in the hole spacing of the igniting target oil reservoir lower part is less than or equal to
At 0.5 meter, and when the injection well described in the hole spacing of target oil reservoir lower part of lighting a fire is more than 5 meters, the injection of the water
Amount is：Q=lq/v；
Wherein, Q indicates the emitted dose of water, unit：L；L indicates injection well to the distance for needing spray to bore oil reservoir, unit：m；q
Indicate the injection discharge capacity of hydraulic ejector, unit：L/s；V indicates the movement speed of spray drill bit, unit：m/s.
In one embodiment, the injection well and the distance between the producing well for oil recovery are 70-140 meters, right
When igniting target oil reservoir lower part is drilled, the hole spacing of the igniting target oil reservoir lower part accounts for the injection well and institute
State 2/3 of distance between producing well.
In one embodiment, the step of lighting a fire to igniting target oil reservoir lower part include：
Tripping in electric igniter is injected into well described, so that the temperature of the igniting target oil reservoir lower part reaches 350 DEG C；
And inject into well lasting injection air 400-500Nm to described3/ (md), to which igniting target oil reservoir lower part be ignited.
In one embodiment, the igniting target oil reservoir lower part is located at 1/ of the igniting target oil reservoir from bottom to top
Place.
In one embodiment, the predetermined time is 7-15 days.
In conclusion the present invention before ignition drills to igniting target oil reservoir lower part using hydraulic ejector, shape
Then the ignition channel for alloing firewire to push ahead at one is lighted a fire in igniting target oil reservoir lower part, is produced after making igniting
Raw hot exhaust gas is gradually crept up to entire igniting target oil reservoir, so that entirely igniting target oil reservoir burning.The present invention
Method is simple, easy to implement, and the recovery ratio of viscous crude is high.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, the shape and proportional sizes etc. of each component in figure are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 shows the flow chart of the ignition method of combustion in situ of the present invention.
Specific implementation mode
With reference to the drawings and the description of the specific embodiments of the present invention, the details of the present invention can clearly be understood.But
It is the specific implementation mode of invention described herein, is only used for explaining the purpose of the present invention, and cannot understands in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrary possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.
As shown in Figure 1, the present invention provides a kind of ignition method of combustion in situ, include the following steps：
S1：Determine igniting target oil reservoir.
S2：In the given time, air is injected into the igniting target oil reservoir by injection well, so that the igniting
In target oil reservoir there is enough oxygen to support burning.
S3：The casing of the injection well is sprayed in the igniting target oil reservoir lower part using hydraulic ejector, with
Through-hole is formed in described sleeve pipe.
S4：After the through-hole of described sleeve pipe runs through, the through-hole in described sleeve pipe is passed through using hydraulic ejector, to the point
Fiery target oil reservoir lower part drills.
S5：After drilling is completed in igniting target oil reservoir lower part, light a fire to igniting target oil reservoir lower part,
So that the hot exhaust gas generated after igniting is gradually crept up to entire igniting target oil reservoir, so that the igniting target is oily
Layer burning.
In the present embodiment, determine that igniting target oil reservoir includes：Obtain the practical percent inspiration of each oil reservoir in oil reservoir；
Obtain the theoretical percent inspiration of each oil reservoir；Seek the reason of the practical percent inspiration and each oil reservoir of each oil reservoir
By the absolute value of the difference of percent inspiration；By the absolute value of the difference compared with the practical percent inspiration of each oil reservoir
Obtain ratio；When the ratio is less than 50%, and the thickness of oil reservoir is more than 1 meter, then judge the oil reservoir for igniting target oil
Layer.
In a specific embodiment, the practical percent inspiration of each oil reservoir is the practical inspiratory capacity and note of each oil reservoir
Enter the ratio of total gas injection rate of well.Wherein, the practical inspiratory capacity of each oil reservoir and total gas injection rate of injection well are all according to Oil Generation
Production scene is actually measured.
In a specific embodiment, the theoretical percent inspiration of each oil reservoir can according to following formula come into
Row calculates：
Wherein, θiIndicate the theoretical percent inspiration of i-th of oil reservoir；M indicates oil reservoir number；y1iIndicate i-th oil reservoir
1st reservoir parameter；y2iIndicate the 2nd reservoir parameter of i-th of oil reservoir；yniIt is expressed as n-th of oil reservoir ginseng of i-th of oil reservoir
Number；Indicate the weight correction value of the 1st reservoir parameter of i-th of oil reservoir；Indicate the 2nd oil reservoir ginseng of i-th of oil reservoir
Several weight correction values；It is expressed as the weight correction value of n-th of reservoir parameter of i-th of oil reservoir.
Wherein, the weight correction value can be calculated according to following formula：
Wherein,Indicate the weight correction value of j-th of reservoir parameter of i-th of oil reservoir；yjiIndicate the jth of i-th of oil reservoir
A reservoir parameter, i take the positive integer in 1 to m, j to take the positive integer in 1 to n；N indicates the number of reservoir parameter,Indicate i-th
The average value of j-th of reservoir parameter of a oil reservoir, ajIndicate the weight of j-th of reservoir parameter.For example, of the reservoir parameter
Number is if it is 4, then n=4, the number of specific reservoir parameter can be determined rationally according to actual needs, herein not
Make any restriction.
Wherein, the weight of reservoir parameter can be sought according to following equation：
(1) target sequence (the practical inspiratory capacity of oil reservoir) and analytical sequence (reservoir parameter of each oil reservoir in oil reservoir) are chosen：
In formula,It is expressed as target sequence；It is expressed as comparing sequence；M is expressed as sequence length；During j values are 1 to n
Positive integer, n is expressed as comparing the number of sequence.
(2) according to formulaThe target sequence of selection and analytical sequence are made at nondimensionalization
Reason；Wherein, xb(k) it is expressed as yb(k) nondimensionalization numerical value；yb(k) it is expressed as in step 1Interior any number；B values
Positive integer in being 0 to 4.
(3) according to formulaAcquire coefficient ξ0j(k).Wherein, Δj
(k)=| x0(k)-xj(k)|；x0(k) the practical inspiratory capacity of nondimensional oil reservoir is indicated；xj(k) nondimensional reservoir parameter is indicated
j；Indicate each data point Δj(k) minimum value of absolute value of the difference；Indicate each number
Strong point Δj(k) maximum value of absolute value of the difference；ρ is expressed as resolution ratio, ρ ∈ (0,1).
(4) according to formulaAcquire association numerical value r0j.Wherein, j values are the positive integer in 1 to 4.
(5) the association numerical value r that will be acquired0jMake normalized, the weight a of reservoir parameter can be obtainedj。
It in the present embodiment, first will in the given time, by injection well to described after igniting target oil reservoir determines
Air is injected in igniting target oil reservoir, so that in the igniting target oil reservoir there is enough oxygen to support burning.This is predetermined
Time can be 7-15 days.Then, using hydraulic ejector in the igniting target oil reservoir lower part to the casing of the injection well
It is sprayed, to form through-hole in described sleeve pipe.
After the through-hole of described sleeve pipe runs through, the through-hole in described sleeve pipe is passed through using hydraulic ejector, to the igniting
Target oil reservoir lower part drills.It is to establish ignition channel in the purpose that igniting target oil reservoir lower part drills, lights oil reservoir
Initial stage, firewire can push ahead along the ignition channel, gradually the large stretch of oil reservoir of burning.
After drilling is completed in igniting target oil reservoir lower part, light a fire to igniting target oil reservoir lower part, with
So that the hot exhaust gas generated after igniting is gradually crept up to entire igniting target oil reservoir, so that the igniting target oil reservoir
Burning.Due to Initial Stage after Ignition, firewire is located at igniting target oil reservoir lower part, and the oil reservoir of lower part is gradually lighted, the hot exhaust gas of generation to
It spreads on the top of oil reservoir so that the upper temp of oil reservoir increases, and reaches the burning point of viscous crude, and then gradually lead fire target oil reservoir
Top oil reservoir, finally so that entire oil reservoir all blaze up, carry out fireflood viscous crude.
The present invention before ignition drills to igniting target oil reservoir lower part using hydraulic ejector, and forming one makes fire
Then the ignition channel that line can push ahead lights a fire in igniting target oil reservoir lower part, makes the hot exhaust gas generated after igniting
It gradually creeps up to entire igniting target oil reservoir, so that entirely igniting target oil reservoir burning.The method of the present invention is simple, easily
It is high in the recovery ratio of implementation, viscous crude.
In one embodiment, carrying out drilling to igniting target oil reservoir lower part includes：Apart from the injection well
When less than or equal to 0.5 meter, drilled to the igniting target oil reservoir lower part injection water using the hydraulic ejector.It utilizes water to
Drilling can protect the pit shaft of injection well while drilling to oil reservoir, avoid the pit shaft of injection well because excessive burning damages well
Cylinder.
When being more than 0.5 meter apart from the injection well, and being less than or equal to 5 meters apart from the injection well, the waterpower is utilized
Injector sprays chemical combustion adjuvant to drill to igniting target oil reservoir lower part.It can be right to drill using chemical combustion adjuvant
While oil reservoir is drilled, the burning point of viscous crude is reduced, makes viscous crude i.e. incendivity at relatively low temperature, can carry in this way
The harvest efficiency of high viscous oil.
When being more than 5 meters apart from the injection well, sprayed to igniting target oil reservoir lower part using the hydraulic ejector
Jetting drills.When being more than 5 meters apart from the injection well, water is changed to by chemical combustion adjuvant to the drilling of oil reservoir, due to 0.5
Rice has been formed to firewire at 5 meters, still unnecessary waste can be caused using chemical combustion adjuvant to drill, therefore, for this
When drilling need to only utilize water, water still can drill through firewire channel in oil reservoir so that firewire can continue to being pushed forward
Into, and then continue that viscous crude is made to burn.
It is described chemistry combustion adjuvant include：Diesel oil, potassium permanganate and thiocarbamide, the wherein content of diesel oil can account for 98%.When
So, those skilled in the art can select suitable chemical combustion adjuvant, the present invention not to do herein according to the needs of actual production
Any restriction.The emitted dose of the chemistry combustion adjuvant can be calculated according to oil reservoir voidage, and specific emitted dose can be：
Q=π [(0.5+x)2-0.52]hΦ。
Wherein, the value range of x is 0.2m-0.4m, and the oil saturation of x and oil reservoir is inversely proportional；H is expressed as oil reservoir thickness
Degree, unit：m；Φ indicates the porosity of oil reservoir.
In a specific embodiment, the injection well described in the hole spacing of the igniting target oil reservoir lower part is less than
When equal to 0.5 meter, and when the injection well described in the hole spacing of target oil reservoir lower part of lighting a fire is more than 5 meters, the water
Emitted dose is：Q=lq/v.
Wherein, Q indicates the emitted dose of water, unit：L；L indicates injection well to the distance for needing spray to bore oil reservoir, unit：m；q
Indicate the injection discharge capacity of hydraulic ejector, unit：L/s；V indicates the movement speed of spray drill bit, unit：m/s.
The injection well is 70-140 meters with the distance between the producing well for oil recovery, under the igniting target oil reservoir
When portion is drilled, the hole spacing of the igniting target oil reservoir lower part accounts for distance between the injection well and the producing well
2/3.The firewire of fireflood has all had been established in 2/3 distance between injection-production well, and firewire can be fully advanced to producing well, therefore not
Oil reservoir that will be between injection well and producing well all drills to reach and makes the clean-burning purpose of oil reservoir, cost-effective.
The step of lighting a fire to igniting target oil reservoir lower part include：
Tripping in electric igniter is injected into well described, so that the temperature of the igniting target oil reservoir lower part reaches 350 DEG C；
And inject into well lasting injection air 400-500Nm to described3/ (md), to which the igniting target oil reservoir ignite.
Specifically, the igniting target oil reservoir lower part is located at the 1/3-1/4 of the igniting target oil reservoir from bottom to top.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of ignition method of combustion in situ, includes the following steps：
Determine igniting target oil reservoir；
In the given time, air is injected into the igniting target oil reservoir by injection well, so that the igniting target is oily
In layer there is enough oxygen to support burning；
It is characterized in that, this method further includes following steps：
The casing of the injection well is sprayed in the igniting target oil reservoir lower part using hydraulic ejector, in the set
Through-hole is formed on pipe；
After the through-hole of described sleeve pipe runs through, the through-hole in described sleeve pipe is passed through using hydraulic ejector, to the igniting target
Oil reservoir lower part drills；
After drilling is completed in igniting target oil reservoir lower part, light a fire to igniting target oil reservoir lower part, so that
The hot exhaust gas generated after igniting is gradually crept up to entire igniting target oil reservoir, so that the igniting target oil reservoir fires
It burns.
2. the ignition method of combustion in situ according to claim 1, which is characterized in that determine that igniting target oil reservoir includes：
Obtain the practical percent inspiration of each oil reservoir in oil reservoir；
Obtain the theoretical percent inspiration of each oil reservoir；
Seek the absolute value of the difference of the practical percent inspiration of each oil reservoir and the theoretical percent inspiration of each oil reservoir；
The absolute value of the difference is obtained into ratio compared with the practical percent inspiration of each oil reservoir；
When the ratio is less than 50%, and the thickness of oil reservoir is more than 1 meter, then judge the oil reservoir for target oil reservoir of lighting a fire.
3. the ignition method of combustion in situ according to claim 1, which is characterized in that igniting target oil reservoir lower part
Carrying out drilling includes：
When being less than or equal to 0.5 meter apart from the injection well, using the hydraulic ejector to igniting target oil reservoir lower part
Injection water drills；
When being more than 0.5 meter apart from the injection well, and being less than or equal to 5 meters apart from the injection well, the water-jet is utilized
Device sprays chemical combustion adjuvant to drill to igniting target oil reservoir lower part；
When being more than 5 meters apart from the injection well, using the hydraulic ejector to igniting target oil reservoir lower part injection water
To drill.
4. the ignition method of combustion in situ according to claim 3, which is characterized in that it is described chemistry combustion adjuvant include：Bavin
Oil, potassium permanganate and thiocarbamide, the content of wherein diesel oil account for 98%.
5. the ignition method of combustion in situ according to claim 3, which is characterized in that the emitted dose of the chemistry combustion adjuvant
For：
Q=π [(0.5+x)2-0.52]hΦ；
Wherein, the value range of x is 0.2m-0.4m, and the oil saturation of x and oil reservoir is inversely proportional；H is expressed as core intersection, single
Position：m；Φ indicates the porosity of oil reservoir.
6. the ignition method of combustion in situ according to claim 3, which is characterized in that in igniting target oil reservoir lower part
Hole spacing described in injection well when being less than or equal to 0.5 meter, and described in the hole spacing of the igniting target oil reservoir lower part
When injection well is more than 5 meters, the emitted dose of water is：Q=lq/v；
Wherein, Q indicates the emitted dose of water, unit：L；L indicates injection well to the distance for needing spray to bore oil reservoir, unit：m；Q is indicated
The injection discharge capacity of hydraulic ejector, unit：L/s；V indicates the movement speed of spray drill bit, unit：m/s.
7. the ignition method of combustion in situ according to claim 1, which is characterized in that the injection well with for oil recovery
The distance between producing well is 70-140 meters, when drilling to igniting target oil reservoir lower part, the igniting target oil reservoir
The hole spacing of lower part accounts for 2/3 of distance between the injection well and the producing well.
8. the ignition method of combustion in situ according to claim 1, which is characterized in that igniting target oil reservoir lower part
The step of being lighted a fire include：
Tripping in electric igniter is injected into well described, so that the temperature of the igniting target oil reservoir lower part reaches 350 DEG C；And to
It is described to inject into well lasting injection air 400-500Nm3/ (md), to which igniting target oil reservoir lower part be ignited.
9. the ignition method of combustion in situ according to claim 1, which is characterized in that the igniting target oil reservoir lower portion
At the 1/3-1/4 of the igniting target oil reservoir from bottom to top.
10. the ignition method of combustion in situ according to claim 1, which is characterized in that the predetermined time is 7-15 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610537229.8A CN106194139B (en) | 2016-07-08 | 2016-07-08 | The ignition method of combustion in situ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610537229.8A CN106194139B (en) | 2016-07-08 | 2016-07-08 | The ignition method of combustion in situ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194139A CN106194139A (en) | 2016-12-07 |
| CN106194139B true CN106194139B (en) | 2018-10-16 |
Family
ID=57472857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610537229.8A Active CN106194139B (en) | 2016-07-08 | 2016-07-08 | The ignition method of combustion in situ |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194139B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948799B (en) * | 2017-02-28 | 2019-05-07 | 中国石油天然气股份有限公司 | The determination method and device of the oil reservoir duration of ignition |
| CN107100604B (en) * | 2017-03-16 | 2019-09-10 | 中国石油天然气股份有限公司 | A method of it is lighted a fire using nano combustion improver and carries out combustion in situ exploitation |
| CN107654221B (en) * | 2017-09-08 | 2019-08-06 | 中国石油天然气股份有限公司 | The method and device of reservoir selective acidizing |
| CN107654208B (en) * | 2017-09-08 | 2019-08-06 | 中国石油天然气股份有限公司 | Reservoir selectively adjusts stifled method |
| CN109469467B (en) * | 2018-11-13 | 2021-07-02 | 中国石油天然气股份有限公司 | Oil layer ignition method and device, storage medium and processor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539011A (en) * | 2009-04-30 | 2009-09-23 | 辽河石油勘探局 | Fire flood eclectic ignition method |
| CN103147733A (en) * | 2013-03-12 | 2013-06-12 | 中国石油天然气股份有限公司 | Windable electric ignition and monitoring system for in-situ combustion |
| CN103161437A (en) * | 2013-03-05 | 2013-06-19 | 中国石油天然气股份有限公司 | Fleeing sealing sand-prevention ignition method of fireflooding oil extraction |
| CN103291244A (en) * | 2013-06-21 | 2013-09-11 | 沈阳摩根能源装备有限公司 | Method for compensating thermal energy of horizontal well mining heavy oil reservoirs in large power and subsection mode in pit |
| CN203394444U (en) * | 2013-05-29 | 2014-01-15 | 中国石油天然气股份有限公司 | Fireflood-assisted gravity drainage injection and production technology system |
| CN104329071A (en) * | 2014-10-29 | 2015-02-04 | 中国石油天然气股份有限公司 | Combustion oil reservoir ignition method and device |
| CN104594863A (en) * | 2014-11-24 | 2015-05-06 | 中国石油天然气股份有限公司 | Method for reinforcing in-situ combustion exploitation oil reservoir |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130146284A1 (en) * | 2011-12-07 | 2013-06-13 | Archon Technologies Ltd. | Staggered horizontal well oil recovery process |
| US20150184499A1 (en) * | 2013-12-30 | 2015-07-02 | Ecopetrol S.A. | Enhanced recovery of hydrocarbon through supercritical wet combustion, gravity stable in deep heavy-oil reservoirs |
-
2016
- 2016-07-08 CN CN201610537229.8A patent/CN106194139B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539011A (en) * | 2009-04-30 | 2009-09-23 | 辽河石油勘探局 | Fire flood eclectic ignition method |
| CN103161437A (en) * | 2013-03-05 | 2013-06-19 | 中国石油天然气股份有限公司 | Fleeing sealing sand-prevention ignition method of fireflooding oil extraction |
| CN103147733A (en) * | 2013-03-12 | 2013-06-12 | 中国石油天然气股份有限公司 | Windable electric ignition and monitoring system for in-situ combustion |
| CN203394444U (en) * | 2013-05-29 | 2014-01-15 | 中国石油天然气股份有限公司 | Fireflood-assisted gravity drainage injection and production technology system |
| CN103291244A (en) * | 2013-06-21 | 2013-09-11 | 沈阳摩根能源装备有限公司 | Method for compensating thermal energy of horizontal well mining heavy oil reservoirs in large power and subsection mode in pit |
| CN104329071A (en) * | 2014-10-29 | 2015-02-04 | 中国石油天然气股份有限公司 | Combustion oil reservoir ignition method and device |
| CN104594863A (en) * | 2014-11-24 | 2015-05-06 | 中国石油天然气股份有限公司 | Method for reinforcing in-situ combustion exploitation oil reservoir |
Non-Patent Citations (3)
| Title |
|---|
| 杜66块火驱开发动态调控技术研究;许国民;《特种油气藏》;20140228;81-83页 * |
| 水力喷射钻孔技术在静北潜山油藏的试验研究;王文涛 等;《石油钻采工艺》;20110731;19-22页 * |
| 矿场火驱过程中火线预测与调整方法;关文龙 等;《西南石油大学学报（自然科学版）》;20111030;157-161页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106194139A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106194139B (en) | The ignition method of combustion in situ | |
| CN103089230B (en) | A kind of solvent assists fireflood gravity drainage to exploit the method for oil reservoir | |
| CN102587880A (en) | Oil extraction method | |
| CN102900415A (en) | Method for mining deep and ultra-deep thick oil pools by using double horizontal well fire flooding drainage | |
| CN104453817B (en) | In-situ combustion combustion-supporting ignition method | |
| CA2698454A1 (en) | Improved in-situ combustion recovery process using single horizontal well to produce oil and combustion gases to surface | |
| CN101798915A (en) | Method for improving recovery ratio of thick-layer massive thickened oil by utilizing subsection fireflooding exploitation | |
| CN107100604A (en) | A kind of method for carrying out combustion in situ exploitation of being lighted a fire using nano combustion improver | |
| CN106593397A (en) | Heavy oil reservoir exploitation method | |
| CN104963669A (en) | Heavy oil thermal recovery method and well pattern thereof | |
| CN101161987A (en) | Combustion soaking heavy crude producing technique | |
| CN105221131B (en) | The oil production method that SAGD is used in conjunction with fireflood | |
| CN104453821A (en) | In-situ combustion layered ignition method | |
| CN104329071B (en) | A kind of combustion in situ ignition method and device | |
| CN101737027B (en) | High energy gas fracturing device of oil reservoirs of horizontal well | |
| CN106761631A (en) | A kind of oil production method and well pattern | |
| CN106089173B (en) | A kind of completion mode with protection reservoir packing function | |
| CN105178932B (en) | The oil production pattern that SAGD is used in conjunction with fireflood | |
| CN106640012A (en) | Fireflooding oil-extracting method for exploiting super heavy oil reservoir with bottom water | |
| CN204371245U (en) | A kind of combustion soaking well note adopts integrated pipe column | |
| CN208966315U (en) | It is layered fireflood tubing string | |
| RU2008137285A (en) | METHOD FOR THERMAL PROCESSING OF DEEPLY LAYING FUEL SHELLS | |
| CN104453818B (en) | A kind of combustion soaking well note adopts integrated pipe column and its ignition method | |
| CN104265249B (en) | A kind of combustion in situ huff and puff oil recovery method | |
| CN109057764A (en) | It is layered fireflood tubing string and its ignition method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |