CN106801596A - The new method that marine water injection well water filling interval is divided - Google Patents
The new method that marine water injection well water filling interval is divided Download PDFInfo
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- CN106801596A CN106801596A CN201510836381.1A CN201510836381A CN106801596A CN 106801596 A CN106801596 A CN 106801596A CN 201510836381 A CN201510836381 A CN 201510836381A CN 106801596 A CN106801596 A CN 106801596A
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- Prior art keywords
- injection well
- water injection
- water
- interval
- divided
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Abstract
The present invention provides the new method that a kind of marine water injection well water filling interval is divided, and the new method that the marine water injection well water filling interval is divided includes：Step 1, by method for numerical simulation, considers that permeability grade, thickness is differential, the small number of plies, each layer water flooding degree and pressure gap in section, determines water injection well dispensing limits criteria；Step 2, penetrates the number of plies, sand thickness, permeability, water flooding degree, the pressure distribution of layers apart position in the statistics existing interval of water injection well, calculate each water filling interval thickness is differential and permeability grade；Step 3, interval Preliminary division is carried out according to dispensing limits criteria to water injection well；Step 4, it is considered to water injection technology, is suitably adjusted, and obtains final division result.The new method and technique thinking that the marine water injection well water filling interval is divided understands, using simple, provide practicable new method for marine and similar oil reservoir injection well interval is divided.
Description
Technical field
The present invention relates to the subdivision injection technical field of marine oil reservoir, a kind of marine water injection well water filling interval is especially related to
The new method of division.
Background technology
Marine oil reservoir is fluvial facies deposit, and reservoir heterogeneity is stronger.The general many set oil reservoirs of development on longitudinal direction, each oil reservoir it
Between physical difference it is larger.Be to reduce interlayer interference, water injection well use subsection water injection substantially, early stage it is general with two sections of one-level with
Two-stage three-segment is in the majority, due to being limited by technique at that time, although water injection well water filling interval is divided have also contemplated that reservoir properties difference,
But based on main or consideration technological factor, supplemented by oil reservoir factor.
With the carrying out of waterflooding extraction, well problem is increasingly highlighted, and it is low to be mainly manifested in interval qualification rate, and interlayer water suction is poor
Different big, injection water is presented uneven propulsion in interlayer, plane, layer, causes waterflooding effect to be deteriorated.Analysis reason,
Main or interval divides relatively thick, and reservoir is still more serious in section.To solve this contradiction, it is necessary to water injection well layer
Section further subdivision.And the continuous progress of water injection technology, also allow water injection well subdivision injection based on oil reservoir demand, work
Supplemented by skill factor.Be this we have invented the new method that a kind of new marine water injection well water filling interval is divided, solve the above
Technical problem.
The content of the invention
Injection water energy is enough advanced uniformly it is an object of the invention to provide one kind, realize that interlayer, plane note adopt balanced and oil reservoir
The new method that effectively the marine water injection well water filling interval employed is divided.
The purpose of the present invention can be achieved by the following technical measures：The new method that marine water injection well water filling interval is divided, should
The new method that marine water injection well water filling interval is divided includes：Step 1, by method for numerical simulation, considers permeability level
Difference, thickness is differential, the small number of plies, each layer water flooding degree and pressure gap in section, determines water injection well dispensing limits criteria；Step
Rapid 2, the number of plies, sand thickness, permeability, water flooding degree, the pressure distribution of layers apart position are penetrated in the statistics existing interval of water injection well,
Calculate each water filling interval thickness is differential and permeability grade；Step 3, interval is carried out according to dispensing limits criteria to water injection well
Preliminary division；Step 4, it is considered to water injection technology, is suitably adjusted, and obtains final division result.
The purpose of the present invention can also be achieved by the following technical measures：
The new method that the marine water injection well water filling interval is divided also includes that before step 1, collection oil reservoir basic parameter is built
Vertical oil reservoir conceptual model.
In step 1, using method for numerical simulation, research permeability grade, thickness is differential, the small number of plies, each layer water in section
The influence of degree and pressure gap to water injection well water suction uniformity coefficient is flooded, and sensitivity analysis is done to each factor, it is final to determine
Water injection well dispensing limits criteria.
In step 2, the small number of plies, thickness, permeability, water flooding degree and the pressure in the statistics existing interval of water injection well, meter
Calculate that thickness is differential and permeability grade, and analyze the difference of above parameter and dispensing limits criteria.
In step 4, it is considered to water injection technology, i.e. individual well highest segments, minimum compartment thickness and most lesser calorie is away to dividing
Interval is suitably adjusted, and is allowed to both meet oil reservoir demand, and feasible in technique, determines that the final interval of water injection well is divided
As a result.
The new method that marine water injection well water filling interval in the present invention is divided, forms water injection well dispensing limits criteria, solves note
The classifying rationally of well water filling interval, makes injection water energy enough advance uniformly, realizes that interlayer, plane note adopt balanced and oil reservoir
Effectively employ.Its technical thought understands, using simple, for marine and similar oil reservoir injection well interval divide provide it is practical
Feasible new method.The method is applied in In Shengli Sea Oil Field Guantao Formation Reservoir, after 50 mouthfuls of water injection wells are segmented again,
Differential in section to be reduced to 2.1 by 4.7, interlayer contradiction is eased, and interval qualification rate rises to 74.4% by 50.2%, tentatively
Realize interlayer equilibrium displacement.
Brief description of the drawings
Fig. 1 is the flow chart of a specific embodiment of the new method that marine water injection well water filling interval of the invention is divided.
Specific embodiment
To enable above and other objects, features and advantages of the invention to 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, Fig. 1 is the flow chart of the new method that marine water injection well water filling interval of the invention is divided.
In step 101, oil reservoir basic parameter is collected, set up oil reservoir conceptual model.
In step 102, using method for numerical simulation, research permeability grade, thickness are differential, the small number of plies, each layer water in section
The influence of degree and pressure gap to water injection well water suction uniformity coefficient is flooded, and sensitivity analysis is done to each factor, it is final to determine
Water injection well dispensing limits criteria.
The small number of plies, thickness, permeability, water flooding degree and pressure in step 103, the statistics existing interval of water injection well, meter
Calculate that thickness is differential and permeability grade, and analyze the difference of above parameter and dispensing limits criteria.
In step 104, the water filling interval to not meeting dispensing limits criteria is further segmented.
In step 105, it is considered to water injection technology, i.e., individual well highest segments, minimum compartment thickness and most lesser calorie away from etc., to institute
Layering section is suitably adjusted, and is allowed to both meet oil reservoir demand, and feasible in technique.
In step 106, the final interval division result of water injection well is determined.
Claims (5)
1. the new method that marine water injection well water filling interval is divided, it is characterised in that the new method that the marine water injection well water filling interval is divided includes：
Step 1, by method for numerical simulation, considers that permeability grade, thickness is differential, the small number of plies, each layer water flooding degree and pressure gap in section, determines water injection well dispensing limits criteria；
Step 2, penetrates the number of plies, sand thickness, permeability, water flooding degree, the pressure distribution of layers apart position in the statistics existing interval of water injection well, calculate each water filling interval thickness is differential and permeability grade；
Step 3, interval Preliminary division is carried out according to dispensing limits criteria to water injection well；
Step 4, it is considered to water injection technology, is suitably adjusted, and obtains final division result.
2. the new method that marine water injection well water filling interval according to claim 1 is divided, it is characterised in that the new method that the marine water injection well water filling interval is divided also includes that before step 1, collection oil reservoir basic parameter sets up oil reservoir conceptual model.
3. the new method that marine water injection well water filling interval according to claim 1 is divided, it is characterized in that, in step 1, using method for numerical simulation, research permeability grade, thickness is differential, the small number of plies, each layer water flooding degree and pressure gap absorb water the influence of uniformity coefficient to water injection well in section, and sensitivity analysis is done to each factor, it is final to determine water injection well dispensing limits criteria.
4. the new method that marine water injection well water filling interval according to claim 1 is divided, it is characterized in that, in step 2, the small number of plies, thickness, permeability, water flooding degree and pressure in the statistics existing interval of water injection well, calculated thickness is differential and permeability grade, and analyzes the difference of above parameter and dispensing limits criteria.
5. the new method that marine water injection well water filling interval according to claim 1 is divided, it is characterized in that, in step 4, consider water injection technology, i.e. individual well highest segments, minimum compartment thickness and most lesser calorie away from, be layered section is suitably adjusted, be allowed to both meet oil reservoir demand, it is again feasible in technique, determine the final interval division result of water injection well.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510836381.1A CN106801596A (en) | 2015-11-26 | 2015-11-26 | The new method that marine water injection well water filling interval is divided |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836381.1A CN106801596A (en) | 2015-11-26 | 2015-11-26 | The new method that marine water injection well water filling interval is divided |
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| CN106801596A true CN106801596A (en) | 2017-06-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667568A (en) * | 2018-12-29 | 2019-04-23 | 中国石油大学(华东) | A kind of determination method and device combined for interval in stratified injection water technology |
| CN111088969A (en) * | 2018-10-23 | 2020-05-01 | 中国石油天然气股份有限公司 | Method and device for determining separate injection scheme of water injection well and storage medium |
| CN114622878A (en) * | 2020-12-08 | 2022-06-14 | 中国石油天然气股份有限公司 | Ultra-low-ultra-low permeability reservoir waterflood development adaptability discrimination method and device |
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| CN102346806A (en) * | 2010-08-06 | 2012-02-08 | 中国石油天然气股份有限公司 | High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system |
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| CN103790558A (en) * | 2012-11-02 | 2014-05-14 | 中国石油化工股份有限公司 | Layered water injection production linkage coupling method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088969A (en) * | 2018-10-23 | 2020-05-01 | 中国石油天然气股份有限公司 | Method and device for determining separate injection scheme of water injection well and storage medium |
| CN111088969B (en) * | 2018-10-23 | 2022-03-29 | 中国石油天然气股份有限公司 | Method and device for determining separate injection scheme of water injection well and storage medium |
| CN109667568A (en) * | 2018-12-29 | 2019-04-23 | 中国石油大学(华东) | A kind of determination method and device combined for interval in stratified injection water technology |
| CN109667568B (en) * | 2018-12-29 | 2021-05-11 | 中国石油大学(华东) | Method and device for determining layer section combination in layered water injection process |
| CN114622878A (en) * | 2020-12-08 | 2022-06-14 | 中国石油天然气股份有限公司 | Ultra-low-ultra-low permeability reservoir waterflood development adaptability discrimination method and device |
| CN114622878B (en) * | 2020-12-08 | 2023-07-25 | 中国石油天然气股份有限公司 | Ultra-low-ultra-low permeability reservoir water flooding development adaptability judging method and device |
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Application publication date: 20170606 |