CN107288599A - Administer the stifled tune method of steam stimulation wells - Google Patents
Administer the stifled tune method of steam stimulation wells Download PDFInfo
- Publication number
- CN107288599A CN107288599A CN201610192111.6A CN201610192111A CN107288599A CN 107288599 A CN107288599 A CN 107288599A CN 201610192111 A CN201610192111 A CN 201610192111A CN 107288599 A CN107288599 A CN 107288599A
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- Prior art keywords
- steam
- injection
- channeling
- high temperature
- tune method
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Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000000638 stimulation Effects 0.000 title claims abstract description 23
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 59
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000005465 channeling Effects 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004088 foaming agent Substances 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 10
- 230000006872 improvement Effects 0.000 claims abstract description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 12
- 229920001864 tannin Polymers 0.000 claims description 9
- 235000018553 tannin Nutrition 0.000 claims description 9
- 239000001648 tannin Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 239000003431 cross linking reagent Substances 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000004971 Cross linker Substances 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 20
- 230000008569 process Effects 0.000 description 11
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002981 blocking agent Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004094 surface-active agent 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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)
- Medicinal Preparation (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention provides a kind of stifled tune method for administering steam stimulation wells, and the stifled tune method of the improvement steam stimulation wells includes：Step 1, before steam injection, steam preheating is injected into the steam-stimulated well for occurring channeling；Step 2, the positive injection high temperature composite plugging agent solution into the steam-stimulated well oil pipe for occurring channeling；Step 3, clear water is replaced after positive injection high temperature composite plugging agent solution；Closing well is waited solidifying；Step 4, steam is injected into the steam-stimulated well for occurring channeling, with nitrogen injection and high-temp foaming agent during steam injection.The stifled tune method of the improvement steam stimulation wells can effectively block high permeable strip, and preventing and treating steam prolongs high permeability zone and scurries into other producing wells, reduces its permeability, with the good effect for administering channeling.
Description
Technical field
The present invention relates to the oil production method of oil reservoir, a kind of stifled tune method for administering steam stimulation wells is especially related to.
Background technology
The crude oil that viscous crude is asphalitine and gum level is higher, viscosity is larger.Ground surface density is generally more than 0.943g/cm3、
Underground viscosity is more than 50mPa.s crude oil viscous crude.Due to viscous crude poor fluidity, the characteristics of oil and water mobility ratio is big is routinely opened
Adopt is difficult effectively to produce it.
Steam soak is exactly first to inject a certain amount of steam to oil well, and closing well for a period of time, treats that the heat energy of steam expands to oil reservoir
Dissipate after, then a kind of exploitation heavy oil of opening well and making production method for increasing.Because the reason steam such as well spacing is small, crack easily prolong hypertonic
Saturating passage vapour is directly scurried out by injection well and into the oil well normally produced, can cause the generation of channeling phenomenon, once and vapour
Alter serious, during adjacent well steam injection, producing well aquifer yield will occur violent increase, or even water content is close to 100%, channeling
The effect of steam injection well can be had a strong impact on, interference is normally produced by channeling well.
Therefore, for reservoir heterogeneity is strong, oil reservoir is thin, from heavy crude reservoirs, recovery process such as the near, fracture developments of water body
In easily occur steam channeling, no matter steam scurry into every interlayer link up water layer alter also or with other producing wells it is logical, all
Effectiveness will be had a strong impact on, causes economically to waste, difficulty is constituted to subsequent development, how channeling is effectively administered
To ensuring that steam soak development effectiveness is most important.For this, we have invented a kind of stifled tune of new improvement steam stimulation wells
Method, solves above technical problem.
The content of the invention
It is an object of the invention to provide a kind of effective closure channeling, the stifled tune system that heat-resisting quantity is good, reservoir injury is small, energy
Enough solve the problems, such as channeling during steam soak, it is ensured that the stifled tune method of the improvement steam stimulation wells of Simulation on whole pay zones effect.
The purpose of the present invention can be achieved by the following technical measures：Administer the stifled tune method of steam stimulation wells, the improvement
The stifled tune method of steam stimulation wells includes：Step 1, before steam injection, inject and steam into the steam-stimulated well for occurring channeling
Vapour is preheated；Step 2, the positive injection high temperature composite plugging agent solution into the steam-stimulated well oil pipe for occurring channeling；Step 3, just
Clear water is replaced after note high temperature composite plugging agent solution, closing well is waited solidifying；Step 4, inject and steam into the steam-stimulated well for occurring channeling
Vapour, with nitrogen injection and high-temp foaming agent during steam injection.
The purpose of the present invention can be also achieved by the following technical measures：
In step 2, the high temperature composite plugging agent of use is made up of tannin extract and crosslinking agent, and the slug injects after steam injection preheating.
In step 2, the high temperature composite plugging agent consumption calculation formula used for：
V=π * R2* h* Φ * a,
R- treatment radius, m；
H- core intersections, m；
Φ-porosity；
A- high infiltration strip coefficients.
In step 2, tannin extract concentration is 7.5%-8% in the high temperature composite plugging agent used.
In step 2, in the high temperature composite plugging agent used crosslinker concentration proportioning for：Formaldehyde 2.5%~4%, phenol 1%~2.5%
Between.
In step 3, replacing rinse dosage calculation formula is：
V=π * r2*h
R- oil pipe inside radius, m；
H- well heads are to the distance in the oil reservoir upper bound, m.
In step 4, steam injection pressure change is recorded in steam injection process, if steam injection pressure is higher than 19MPa, is stopped with nitrogen injection
Foam.
When in step 4, with nitrogen injection and high-temp foaming agent, nitrogen use level is 50000-80000 mark sides, nitrogen gas preparing stream
Measure 900Nm3/ h, high-temp foaming agent consumption is 3-8 tons.
The stifled tune method of improvement steam stimulation wells in the present invention, the nitrogen foam of use meets water stabilization, meets oily froth breaking,
And its apparent viscosity is high, flow resistance is big, into high permeability formation after produce good shut-off capacity, can be effectively increased follow-up
Fluid is in, the displacement capability of low permeability formation, improves swept volume；The surfactant used as foaming agent,
Also oil water interfacial tension can be reduced while with good frothing capacity to a certain extent, displacement efficiency is improved；On stratum
In the foam vanished rise to the top of oil reservoir under gravity, certain elastic energy is provided for oil reservoir.This method
High permeable strip can be effectively blocked, preventing and treating steam prolongs high permeability zone and scurries into other producing wells, reduces its permeability, has
Play the role of to administer channeling well.
Brief description of the drawings
Fig. 1 is the flow chart of a specific embodiment of the stifled tune method of the improvement steam stimulation wells of the present invention.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferred embodiment,
And coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, flow charts of the Fig. 1 for the stifled tune method of the improvement steam stimulation wells of the present invention.
Step 101：Before steam injection, steam preheating is injected into the steam-stimulated well for occurring channeling.
Step 102：The positive injection high temperature composite plugging agent solution into the steam-stimulated well oil pipe for occurring channeling.In one embodiment,
The high temperature composite plugging agent of use is made up of tannin extract and crosslinking agent, and the slug injects after steam injection preheating.The high temperature of use is answered
Close plug agent amount computational methods：
V=π * R2* h* Φ * a,
R- treatment radius, m；
H- core intersections, m；
Φ-porosity；
A- high infiltration strip coefficients；
Plastic effect is good when modified tannin extract concentration is 7.5%-8% in high temperature composite plugging agent.Crosslinker concentration in high temperature composite plugging agent
At 5% or so, its gelation time and plastic effect are substantially without influence, but when wherein concentration of formaldehyde is less than 2%
Tannin extract not plastic.Therefore crosslinker concentration proportioning should be：Between formaldehyde 2.5%~4%, phenol 1%~2.5%.
Step 103, clear water is replaced after positive injection high temperature composite plugging agent solution；Closing well waits solidifying 24h.Rinse dosage is replaced to calculate
Method：
V=π * r2*h
R- oil pipe inside radius, m；
H- well heads are to the distance in the oil reservoir upper bound, m.
Step 104：Steam is injected into the steam-stimulated well for occurring channeling, is bubbled during steam injection with nitrogen injection and high temperature
Agent.Steam injection process notes record steam injection pressure change, to adjust steam injection parameter according to pressure in time, if steam injection pressure is high
In 19MPa, stop with nitrogen filling foam.With nitrogen injection and high-temp foaming agent in steam injection process, nitrogen use level is
50000-80000 mark sides, nitrogen gas preparing flow 900Nm3/ h, high-temp foaming agent consumption is 3-8 tons.
It is two specific embodiments of the application present invention below：
Embodiment 1
6 pieces of Jin Jia oil fields gold is since the exploitation, and it is serious that channeling phenomenon occurs for the steam soak period 1, for channeling well gold 6-6
Well is administered using this method to channeling, and specific implementation step is as follows：
Step one：Steam 200t, steam injection rate 9t/h, steam injection mass dryness fraction >=75% are injected into steam injection well.Steam injection process notes
Steam injection pressure change is recorded, to adjust steam injection parameter according to pressure in time.
Step 2：Note blocking agent.Positive injection high temperature composite plugging agent solution 70m3(composite plugging agent formula：5.6 tons of modified tannin extract is dense
Degree 8%, 2.8 tons of crosslinking agent, concentration 4%), extrude clear water 20m3；Closing well waits solidifying 24h.
Step 3：Steam 1600t, steam injection rate 8-10t/h, steam injection mass dryness fraction >=75% are injected into steam injection well.Steam injection process
Middle companion's nitrogen injection 6Nm3, 4 tons of high-temp foaming agent, nitrogen gas preparing flow 900Nm3/h.Steam injection process notes recording steam injection pressure
Change, to adjust steam injection parameter according to pressure in time, if steam injection pressure is higher than 19MPa, stops with nitrogen injection.
Implementation result：During golden 6-6 wells period 1 steam soak, face well oblique 11 wells of gold 6- and gold 6-10 wells daily fluid production rate and contain
Water rises suddenly, occurs channeling；This steam injection round is using this method to carry out channeling preventing and treating before second round, steam injection,
Achieve in better effects, steam injection process and do not occur channeling；Accumulative oil-producing is 280 tons more than a upper cycle, and gas oil ratio is improved
0.15-0.2。
Embodiment 2
Jin Jia oil fields 17 pieces of gold 17- of gold put down for 24 well steam injection second rounds, occurred channeling with Lin Jing, put down 24 wells for golden 17- and adopted
Channeling is administered with this method, specific implementation step is as follows：
This implementation provides a kind of stifled tune method for being applied to administer steam stimulation wells, comprises the following steps：
Step one：Steam 200t, steam injection rate 9t/h, steam injection mass dryness fraction >=75% are injected into steam injection well.Steam injection process notes
Steam injection pressure change is recorded, to adjust steam injection parameter according to pressure in time.
Step 2：Note blocking agent.Positive injection high temperature composite plugging agent solution 100m3(composite plugging agent formula：8 tons of modified tannin extract, concentration
8%th, 4 tons of crosslinking agent, concentration 4%), extrude clear water 30m3；Closing well waits solidifying 24h.
Step 3：Steam 2200t, steam injection rate 8-10t/h, steam injection mass dryness fraction >=75% are injected into steam injection well.Steam injection process
Middle companion's nitrogen injection 8Nm3, 4 tons of high-temp foaming agent, nitrogen gas preparing flow 900Nm3/h.Steam injection process notes recording steam injection pressure
Change, to adjust steam injection parameter according to pressure in time, if steam injection pressure is higher than 19MPa, stops with nitrogen injection.
Implementation result：When golden 17- puts down 24 well second round steam soak, face well gold 17- and put down 22 wells and the flat 37 wells daily outputs of gold 17-
Liquid measure and it is aqueous rise suddenly, occur channeling；This steam injection round is using this method to carry out vapour before period 3, steam injection
Preventing and treating is altered, achieves in better effects, steam injection process and does not occur channeling；Accumulative oil-producing is 450 tons more than a upper cycle, oil
Vapour is than improving 0.15-0.2.
Claims (8)
1. administer the stifled tune method of steam stimulation wells, it is characterised in that the stifled tune method of the improvement steam stimulation wells includes：
Step 1, before steam injection, steam preheating is injected into the steam-stimulated well for occurring channeling；
Step 2, the positive injection high temperature composite plugging agent solution into the steam-stimulated well oil pipe for occurring channeling；
Step 3, clear water is replaced after positive injection high temperature composite plugging agent solution, closing well is waited solidifying；
Step 4, steam is injected into the steam-stimulated well for occurring channeling, with nitrogen injection and high-temp foaming agent during steam injection.
2. the stifled tune method according to claim 1 for administering steam stimulation wells, it is characterised in that in step 2, is used
High temperature composite plugging agent be made up of tannin extract and crosslinking agent, the slug steam injection preheating after inject.
3. the stifled tune method according to claim 2 for administering steam stimulation wells, it is characterised in that in step 2, is used
High temperature composite plugging agent consumption calculation formula be：
V=π * R2* h* Φ * a,
R- treatment radius, m；
H- core intersections, m；
Φ-porosity；
A- high infiltration strip coefficients.
4. the stifled tune method according to claim 2 for administering steam stimulation wells, it is characterised in that in step 2, is used
High temperature composite plugging agent in tannin extract concentration be 7.5%-8%.
5. the stifled tune method according to claim 2 for administering steam stimulation wells, it is characterised in that in step 2, is used
High temperature composite plugging agent in crosslinker concentration proportioning be：Between formaldehyde 2.5%~4%, phenol 1%~2.5%.
6. the stifled tune method according to claim 1 for administering steam stimulation wells, it is characterised in that in step 3, is replaced
Rinse dosage calculation formula is：
V=π * r2*h
R- oil pipe inside radius, m；
H- well heads are to the distance in the oil reservoir upper bound, m.
7. the stifled tune method according to claim 1 for administering steam stimulation wells, it is characterised in that in step 4, steam injection
During record steam injection pressure change, if steam injection pressure is higher than 19MPa, stop with nitrogen filling foam.
8. the stifled tune method according to claim 1 for administering steam stimulation wells, it is characterised in that in step 4, with note
When nitrogen and high-temp foaming agent, nitrogen use level is 50000-80000 mark sides, nitrogen gas preparing flow 900Nm3/ h, high temperature foaming
Agent consumption is 3-8 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192111.6A CN107288599A (en) | 2016-03-30 | 2016-03-30 | Administer the stifled tune method of steam stimulation wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192111.6A CN107288599A (en) | 2016-03-30 | 2016-03-30 | Administer the stifled tune method of steam stimulation wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107288599A true CN107288599A (en) | 2017-10-24 |
Family
ID=60087135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610192111.6A Pending CN107288599A (en) | 2016-03-30 | 2016-03-30 | Administer the stifled tune method of steam stimulation wells |
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| Country | Link |
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| CN (1) | CN107288599A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708693A (en) * | 2018-05-25 | 2018-10-26 | 中国石油大学(华东) | A kind of closing fault block oil reservoir nitrogen compound throughput method |
| CN110159237A (en) * | 2019-06-10 | 2019-08-23 | 中国石油大学(华东) | A method of it is whole to adjust stifled heavy oil reservoir with edge and bottom water water enchroachment (invasion) and channeling |
| CN112824648A (en) * | 2019-11-21 | 2021-05-21 | 中国石油天然气股份有限公司 | Steam flooding mining method |
| CN113914837A (en) * | 2020-07-07 | 2022-01-11 | 中国石油天然气股份有限公司 | Method for measuring steam channeling degree between steam huff and puff wells |
| CN114075955A (en) * | 2020-08-17 | 2022-02-22 | 中国石油天然气股份有限公司 | Gaseous CO2Steam huff-puff channeling-preventing and injection-increasing assisting method |
| CN114961639A (en) * | 2022-07-28 | 2022-08-30 | 新疆新易通石油科技有限公司 | Steam flooding blocking and dredging combined development method for heavy oil reservoir |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708693A (en) * | 2018-05-25 | 2018-10-26 | 中国石油大学(华东) | A kind of closing fault block oil reservoir nitrogen compound throughput method |
| CN108708693B (en) * | 2018-05-25 | 2019-03-26 | 中国石油大学(华东) | A kind of closing fault block oil reservoir nitrogen compound throughput method |
| CN110159237A (en) * | 2019-06-10 | 2019-08-23 | 中国石油大学(华东) | A method of it is whole to adjust stifled heavy oil reservoir with edge and bottom water water enchroachment (invasion) and channeling |
| CN110159237B (en) * | 2019-06-10 | 2020-05-15 | 中国石油大学(华东) | Method for integrally regulating water invasion and steam channeling of edge-bottom water heavy oil reservoir |
| CN112824648A (en) * | 2019-11-21 | 2021-05-21 | 中国石油天然气股份有限公司 | Steam flooding mining method |
| CN113914837A (en) * | 2020-07-07 | 2022-01-11 | 中国石油天然气股份有限公司 | Method for measuring steam channeling degree between steam huff and puff wells |
| CN114075955A (en) * | 2020-08-17 | 2022-02-22 | 中国石油天然气股份有限公司 | Gaseous CO2Steam huff-puff channeling-preventing and injection-increasing assisting method |
| CN114961639A (en) * | 2022-07-28 | 2022-08-30 | 新疆新易通石油科技有限公司 | Steam flooding blocking and dredging combined development method for heavy oil reservoir |
| CN114961639B (en) * | 2022-07-28 | 2022-10-14 | 新疆新易通石油科技有限公司 | Steam flooding blocking and dredging combined development method for heavy oil reservoir |
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Application publication date: 20171024 |