CN110259410A - A kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff - Google Patents
A kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff Download PDFInfo
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- CN110259410A CN110259410A CN201910573586.3A CN201910573586A CN110259410A CN 110259410 A CN110259410 A CN 110259410A CN 201910573586 A CN201910573586 A CN 201910573586A CN 110259410 A CN110259410 A CN 110259410A
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- Prior art keywords
- slug
- water
- injection
- oil
- oil reservoir
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 29
- 239000007924 injection Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000002981 blocking agent Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000013043 chemical agent Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 description 7
- 230000035699 permeability Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002349 well water 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
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
, the first slug the present invention relates to a kind of methods that water blockoff is realized in quarrying oil tech field, in particular to high-water-cut oil-producing well fixed tubular column, including the following steps: (1), various concentration constant flow injects in oil reservoir；(2), the second slug, preposed attributives are injected into oil reservoir deep；(3), third slug, blocking agent principal piece plug inject oil reservoir medium and deep portion；(4), the 4th slug, high-strength dose+crack agent, high-strength dose of injection pressure 6-10MPa；(5), after the completion of slug injection, the Injection Sections steadily puts such as which closes 5 days are fixed, then row opening well and making production.Operating cost is low, and later maintenance cost is low, and it is big that chemical agent involves space, is readily injected into target zone and plays a role.
Description
Technical field
The present invention relates to the sides that water blockoff is realized in quarrying oil tech field, in particular to a kind of high-water-cut oil-producing well fixed tubular column
Method.
Background technique
Well water is one of oil extraction process of oil well important phenomenon, is generally existing in oilfield exploitation procedure ask
Topic.In the case that well recovery later period or periphery water filling are more, water accounting is seriously affected and is adopted to 90% or more in oil well produced liquid
Oily efficiency.Oilwell water shutoff refers to that use mechanical means or chemical method to carry out water blockoff processing to water logging oil well goes out to reduce oil well
Water improves crude output.
Chemical water shutoff is to be injected into stratum High Permeability Interval using specific chemical agent as water shutoff agent, close by reducing
The water phase permeability in well area achievees the purpose that reducing oil well produces water, increases crude output.The mechanism of action are as follows: rely on technique hand
Section makes chemical plugging agent be selectively entered the higher middle less permeable layer of water saturation or water outlet crack, (main in residual resistive
It is physical clogging) under effect, is formed in layer or in fracture hole and manually blocked, inhibit channelling, the coning of water, to make the expansion of displacement energy
Greatly to the higher middle less permeable layer of oil saturation or crack duct, change the yield of longitudinal production profile and Fracture System
Layout improves waterflood efficiency, so as to improve the development effectiveness of oil reservoir.
Non-selective chemical plugging: the prior art needs tripping in packer in operating tool string combination, isolates water blockoff purpose
Layer, reinjects blocking agent.Suitable for blocking single water layer or high aquifer formation；But there are disadvantages, need tripping in packer, operating cost
Height, later maintenance cost are high.Selective chemical water blockoff: selecting chemical agent appropriate, blocks water layer or changes between oil, water, rock
Interfacial tension, reduce the water phase permeability of oil-water common-layer, oleic permeability influenced smaller, but there are disadvantage, chemical agents
It is small to involve space, is difficult injection target zone and plays a role.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defects of above-mentioned technology, provide a kind of high-water-cut oil-producing well fixed tubular column
The method for realizing water blockoff.
In order to solve the above technical problems, technical solution provided by the invention is that a kind of high-water-cut oil-producing well fixed tubular column realizes stifled
The method of water, including the following steps:
(1), the first slug, various concentration constant flow inject in oil reservoir, 2~10MPa of injection pressure；
(2), the second slug, preposed attributives are injected into oil reservoir deep, 2~4MPa of injection pressure, and the second slug is located at first
In slug；
(3), third slug, blocking agent principal piece plug inject oil reservoir medium and deep portion, 3~8MPa of injection pressure, and third slug is located at
In second slug；
(4), the 4th slug, high-strength dose+crack agent, high-strength dose of injection pressure 6-10MPa；Crack agent injection pressure 12MPa
More than, in fracture pressure hereinafter, injecting to greatest extent, the 4th slug is located in third slug for control.
(5), after the completion of slug injection, the Injection Sections steadily puts such as which closes 5 days are fixed, then row opening well and making production.
The advantages of the present invention over the prior art are that: operating cost is low, and later maintenance cost is low, and chemical agent involves sky
Between it is big, be readily injected into target zone and play a role.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the method that a kind of high-water-cut oil-producing well fixed tubular column of the present invention realizes water blockoff.
It is as shown in the figure: 1, the first slug, the 2, second slug, 3, third slug, the 4, the 4th slug.
Specific embodiment
The method for realizing water blockoff to a kind of high-water-cut oil-producing well fixed tubular column of the present invention with reference to the accompanying drawing is done further detailed
It describes in detail bright.
In conjunction with attached drawing 1, a kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff, including the following steps:
(1), the first slug, various concentration constant flow inject in oil reservoir, 2~10MPa of injection pressure；Lab scale, first from low
To the equipment of high concentration, technique, oil well and reservoir parameter matching test, foundation is provided for the feasible and perfect modification of subsequent schedule.
(2), the second slug, preposed attributives are injected into oil reservoir deep, 2~4MPa of injection pressure, and the second slug is located at first
In slug；Controlling water reduces the selective forward position slug of oil flow resistance.Low pressure is injected into the deep in High water cut channel, prevents High water cut
The deep water and potential source of main channel construct slug deep early period.
(3), third slug, blocking agent principal piece plug inject oil reservoir medium and deep portion, 3~8MPa of injection pressure, and third slug is located at
In second slug；Middle pressure injection enters the netted high-drag of intelligence and residual resistance factor injecting system.Regulate and control near wellbore zone mobility, solves
Heterogeneous predominant pathway problem in interlevel layer, improves hypotonic substratum utilization rate.
(4), the 4th slug, high-strength dose+crack agent, high-strength dose of injection pressure 6-10MPa；Crack agent injection pressure 12MPa
More than, in fracture pressure hereinafter, injecting to greatest extent, the 4th slug is located in third slug for control.High intensity sealing seals
It extends the expiration date；On the one hand the width for increasing profile control, further increases the flow resistance for altering layer, high permeability area liquid；Last high pressure
Injection solves the problems, such as high-strength sealing slug push to oil reservoir deep with releasing it is hypotonic be adjusted, the Liquid output after raising measure.It realizes
Purpose that is aqueous, improving pressure difference liquid measure and increasing oil drops.
Above four slugs, total injection rate 630m3, theoretical calculation water blockoff width is about 15m.In oil reservoir physical difference compared with
Greatly, or there are microcrack etc., the developed width of water shutoff agent will be far longer than the 15m that theoretical calculation goes out, and a kind of irregular
Shape.
(5), after the completion of slug injection, the Injection Sections steadily puts such as which closes 5 days are fixed, then row opening well and making production.
And when carrying out slug injection, in order to expand the area that medicament involves, plays the role of better, need to adopt
Cavitation technique is shaken with waterpower.
The present invention and its embodiments have been described above, this description is no restricted, shown in the drawings
Only one of embodiments of the present invention, actual structure is not limited to this.All in all if the ordinary skill of this field
Personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution phase
As frame mode and embodiment, be within the scope of protection of the invention.
Claims (1)
1. a kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff, characterized in that it comprises the following steps:
(1), the first slug, various concentration constant flow inject in oil reservoir, 2~10MPa of injection pressure；
(2), the second slug, preposed attributives are injected into oil reservoir deep, 2~4MPa of injection pressure, and the second slug is located at the first slug
It is interior；
(3), third slug, blocking agent principal piece plug inject oil reservoir medium and deep portion, 3~8MPa of injection pressure, and third slug is located at second
In slug；
(4), the 4th slug, high-strength dose+crack agent, high-strength dose of injection pressure 6-10MPa；Agent injection pressure 12MPa or more is cracked,
In fracture pressure hereinafter, injecting to greatest extent, the 4th slug is located in third slug for control.
(5), after the completion of slug injection, the Injection Sections steadily puts such as which closes 5 days are fixed, then row opening well and making production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573586.3A CN110259410A (en) | 2019-06-28 | 2019-06-28 | A kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573586.3A CN110259410A (en) | 2019-06-28 | 2019-06-28 | A kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110259410A true CN110259410A (en) | 2019-09-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910573586.3A Pending CN110259410A (en) | 2019-06-28 | 2019-06-28 | A kind of method that high-water-cut oil-producing well fixed tubular column realizes water blockoff |
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| CN (1) | CN110259410A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498643A (en) * | 2013-10-23 | 2014-01-08 | 天津亿利科能源科技发展股份有限公司 | Composite slug deep water plugging method for oil pool with high water content |
| CN104060974A (en) * | 2014-03-27 | 2014-09-24 | 上海井拓石油开发技术有限公司 | Integrated technology of equal fluidity oil displacement and profile control |
| WO2015044220A2 (en) * | 2013-09-30 | 2015-04-02 | Mærsk Olie Og Gas A/S | Multiphase fluid analysis |
| RU2570157C1 (en) * | 2014-11-25 | 2015-12-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method for enhanced oil recovery for deposit penetrated by horizontal well |
| CN105298438B (en) * | 2015-10-23 | 2017-12-22 | 克拉玛依新科澳石油天然气技术股份有限公司 | More fine profile control methods in round polymer gel deep |
| CN107652953A (en) * | 2017-09-13 | 2018-02-02 | 中国石油天然气股份有限公司 | High-temperature-resistant high-salt-resistant slug type chemical water plugging agent |
| CN108533238A (en) * | 2018-04-18 | 2018-09-14 | 中国石油天然气股份有限公司 | Method for plugging dominant seepage channel after polymer flooding |
| CN109630066A (en) * | 2019-02-27 | 2019-04-16 | 杨凌单色生物科技有限公司 | The method of low-permeability oilfield high-water-cut oil-producing well water blockoff and acidification integration of operation |
-
2019
- 2019-06-28 CN CN201910573586.3A patent/CN110259410A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015044220A2 (en) * | 2013-09-30 | 2015-04-02 | Mærsk Olie Og Gas A/S | Multiphase fluid analysis |
| CN103498643A (en) * | 2013-10-23 | 2014-01-08 | 天津亿利科能源科技发展股份有限公司 | Composite slug deep water plugging method for oil pool with high water content |
| CN104060974A (en) * | 2014-03-27 | 2014-09-24 | 上海井拓石油开发技术有限公司 | Integrated technology of equal fluidity oil displacement and profile control |
| CN104060974B (en) * | 2014-03-27 | 2016-08-24 | 上海井拓石油开发技术有限公司 | Deng the mobility displacement of reservoir oil and profile control integrated technique |
| RU2570157C1 (en) * | 2014-11-25 | 2015-12-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method for enhanced oil recovery for deposit penetrated by horizontal well |
| CN105298438B (en) * | 2015-10-23 | 2017-12-22 | 克拉玛依新科澳石油天然气技术股份有限公司 | More fine profile control methods in round polymer gel deep |
| CN107652953A (en) * | 2017-09-13 | 2018-02-02 | 中国石油天然气股份有限公司 | High-temperature-resistant high-salt-resistant slug type chemical water plugging agent |
| CN108533238A (en) * | 2018-04-18 | 2018-09-14 | 中国石油天然气股份有限公司 | Method for plugging dominant seepage channel after polymer flooding |
| CN109630066A (en) * | 2019-02-27 | 2019-04-16 | 杨凌单色生物科技有限公司 | The method of low-permeability oilfield high-water-cut oil-producing well water blockoff and acidification integration of operation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190920 |