CN110376113A - A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid - Google Patents
A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid Download PDFInfo
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- CN110376113A CN110376113A CN201910687019.0A CN201910687019A CN110376113A CN 110376113 A CN110376113 A CN 110376113A CN 201910687019 A CN201910687019 A CN 201910687019A CN 110376113 A CN110376113 A CN 110376113A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000003245 coal Substances 0.000 title claims abstract description 41
- 230000006378 damage Effects 0.000 title claims abstract description 39
- 230000000903 blocking effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 title claims description 13
- 238000011156 evaluation Methods 0.000 title description 8
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 230000008595 infiltration Effects 0.000 claims abstract description 7
- 238000001764 infiltration Methods 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 230000035699 permeability Effects 0.000 claims description 13
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 238000005481 NMR spectroscopy Methods 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 238000001228 spectrum Methods 0.000 claims description 6
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Dispersion Chemistry (AREA)
- High Energy & Nuclear Physics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The present invention provides a kind of method for evaluating coal seam reservoirs water blocking damage, comprising: calculates the constraint fluid saturation X of sample；According to the X, the infiltration loss ratio Y of the sample is calculated；According to the Y, coal seam reservoirs water blocking damage is determined.
Description
Technical field
The invention belongs to coal seam reservoirs geological research technical fields, and in particular to a kind of evaluation coal seam reservoirs water blocking damage method and
Water lock releases liquid.
Background technique
Water-blocking effect is common problem in oil-gas field development, in operations such as drilling well, complete well, well workover and well stimulations
In all there is water-blocking effect to some extent, cause the oil/gas well underproduction even stop production.Therefore, study the influence of water-blocking effect because
Element finds the method for inhibiting and releasing water blocking damage, is of great importance to the development effectiveness for improving Low permeable oil and gas reservoirs.
Currently, common evaluation water blocking damage method depends on the changing value that water lock front and back permeability occurs, this
Method needs to take multiple measurements core permeability, not only consumes manpower and material resources, but also has measurement to limit, it is necessary to have phase
Close permeability determination device.There is also corresponding error conditions in terms of measurement result, have certain limitation, can not be to certain
The water lock degree of one block carries out Fast Evaluation.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
The evaluation coal seam reservoirs water blocking damage method and water lock for stating problem release liquid.
The embodiment of the present invention provides a kind of method for evaluating coal seam reservoirs water blocking damage, comprising:
Obtain the constraint fluid saturation X of coal sample；
According to the X, the infiltration loss ratio Y of the sample is obtained；
According to the Y, coal seam reservoirs water blocking damage degree is judged.
Further, the constraint fluid saturation X for calculating core sample includes:
Measure the T under the coal sample pressurization saturation state2Compose T21；
Measure the nuclear magnetic resonance T when coal sample dry sample2Compose T22；
According to the T21And T22, obtain the constraint fluid saturation X of sample.
Further, described according to the T21And T22, the constraint fluid saturation X for calculating sample includes:
Make the T respectively21And T22T2Cumulative porosity rate curve graph is composed, T is obtained21Summation curve and T22Summation curve；T2
Cumulative porosity rate curve graph is composed using the relaxation time as abscissa, using section porosity and/or cumulative porosity rate as ordinate；
According to the T21Summation curve and T22Summation curve obtains the constraint fluid saturation of the sample.
Further, described according to the T21Summation curve and T22Summation curve, the constraint fluid for obtaining the sample are full
Include: with degree
With the T22The signal amplitude maximum value of summation curve be point of contact make horizontal tangent, obtain the tangent line with it is described
T21The intersection point of summation curve；
According to the intersection point, the corresponding relaxation time T of the intersection point is obtained2c；
The T2cThe corresponding saturation coal sample nuclear magnetic resonance T in the left side2The area and saturation coal sample nuclear magnetic resonance T of spectrum2That composes is total
The ratio of area is constraint fluid saturation.
Further, the infiltration loss ratio Y for obtaining the sample includes:
Y=0.5992X+23.045
In formula, Y is permeability damage rate, and X is constraint fluid saturation.
Further, described according to the Y, determine that coal seam reservoirs water blocking damage is judged according to following table:
| Permeate loss ratio Y, % | Water blocking damage degree |
| Y≤5 | Nothing |
| 5 Y≤30 < | It is weak |
| 30 Y≤50 < | It is medium on the weak side |
| 50 Y≤70 < | It is medium partially strong |
| Y > 70 | By force |
Based on the same inventive concept, the embodiment of the present invention also provides a kind of water lock releasing liquid, for releasing the water lock wound
Evil, it includes following at least one that the water lock, which releases liquid: ethyl alcohol, ethylene glycol ethyl ether, isopropanol.
Further, it is ethyl alcohol that the water lock, which releases liquid, and the ethyl alcohol mass concentration is 0.4%.
One or more technical solutions in the embodiment of the present invention, have at least the following technical effects or advantages:
It is seeped using the method that the embodiment of the present invention provides evaluation coal seam reservoirs water blocking damage by irreducible water saturation
Saturating loss ratio has easy to operate, evaluation accurately technical effect to judge coal seam reservoirs water blocking damage degree.
A kind of water lock provided in an embodiment of the present invention releases liquid, and for releasing the water blocking damage, the water lock releases liquid
Including following at least one: ethyl alcohol, ethylene glycol ethyl ether, isopropanol；With the unlock apparent technical effect of effect.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, identical component is indicated with identical reference pattern.In the accompanying drawings:
Fig. 1 is that constraint fluid and movable fluid calculate schematic diagram；
Fig. 2 is the relation schematic diagram fettered between fluid saturation and permeability damage rate.
Specific embodiment
Below in conjunction with specific embodiment and embodiment, it is specifically described the present invention, advantages of the present invention and various effects
It thus will clearly present.It will be understood by those skilled in the art that these specific embodiments and embodiment are for illustrating
The present invention is not intended to limit the present invention.
Throughout the specification, unless otherwise specified, terms used herein are interpreted as usual in this field
Used meaning.Therefore, unless otherwise defined, all technical and scientific terms used herein has leads with belonging to the present invention
The identical meaning of the general understanding of field technique personnel.Contradiction if it exists, this specification are preferential.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention, can pass through
Market is commercially available or can be prepared by existing method.
Embodiment 1
The present embodiment provides a kind of methods for evaluating coal seam reservoirs water blocking damage, comprising:
Obtain the constraint fluid saturation X of coal sample；
According to the X, the infiltration loss ratio Y of the sample is obtained；
According to the Y, coal seam reservoirs water blocking damage degree is judged.
It is described calculate core sample constraint fluid saturation X include:
Measure the T under the sample pressurization saturation state2Compose T21；
Measure the nuclear magnetic resonance T when sample dry sample2Compose T22；
According to the T21And T22, obtain the constraint fluid saturation X of sample.
It is described according to the T21And T22, the constraint fluid saturation X for calculating sample includes:
Make the T respectively21And T22T2It composes cumulative porosity rate curve graph (see Fig. 1), obtains T21Summation curve and T22It is accumulative
Curve；
According to the T21Summation curve and T22Summation curve obtains the constraint fluid saturation of the sample；
With the T22The signal amplitude maximum value of summation curve be point of contact make horizontal tangent, obtain the tangent line with it is described
T21The intersection point of summation curve；
According to the intersection point, the corresponding relaxation time T of the intersection point is obtained2c；
T2cThe saturation coal sample nuclear magnetic resonance T on the left side2The area and saturation coal sample nuclear magnetic resonance T of spectrum2The ratio of the gross area of spectrum
Value is constraint fluid saturation.
It is in power function correlativity between the constraint fluid saturation and permeability of coal seam reservoirs；With the increase of permeability, water
Lock injury is smaller and smaller, is in logarithm correlativity, and therefore, constraint fluid saturation is closed to permeability damage rate rate in logarithm is related
System.According to above-mentioned theory, draws permeability damage rate and fetter the scatter plot of fluid saturation variation, as shown in Figure 2.
The infiltration loss ratio Y for obtaining the sample includes:
Y=0.5992X+23.045
In formula, Y is permeability damage rate, and X is constraint fluid saturation.
It is described according to the Y, determine that coal seam reservoirs water blocking damage is judged according to following table:
| Permeate loss ratio Y, % | Water blocking damage degree |
| Y≤5 | Nothing |
| 5 Y≤30 < | It is weak |
| 30 Y≤50 < | It is medium on the weak side |
| 50 Y≤70 < | It is medium partially strong |
| Y > 70 | By force |
Embodiment 2
The present embodiment provides a kind of water to lock release method, carries out water lock using organic solvent and releases, and is locked according to the water
Releasing degree is injured, determines the dosage of the organic solvent.Coal sample is measured by specific surface instrument analysis and angle of wetting measurement experiment
The parameters such as average pore size, specific surface area, pore volume, angle of wetting.
Calculate the grey relational grade of different coal sample parameters and permeability damage rate, can according to the size of grey relational grade,
Come judge it is main influence water lock factor, thus from change this factor set about preferable organic solvent.
For the mechanism of action of different organic solvents, preferred organic solvent out, as this average pore size be it is main influence because
Element, therefore preferably going out the mechanism of action is that change the reagent example in aperture be isopropanol, ethylene glycol ethyl ether, ethyl alcohol.
For several organic solvents being selected, various concentration (investigation is 0.2%-0.6%) is selected, to judge it not
With the degree that concentration difference reagent water blocking damage releases, judged by following table:
| Irreducible water saturation knots modification/% | Permeability damage rate knots modification/% | Water locks releasing degree |
| <1 | <23.64 | Difference |
| 1-10 | 23.64-29.04 | Generally |
| 10-15 | 29.04-32.03 | Preferably |
| >15 | >32.03 | It is good |
By the constraint water saturation of the irreducible water saturation of the processed coal sample of the organic solvent of various concentration and original coal sample
Degree compares, and the degree that water lock releases is judged according to its knots modification, to obtain the optimal reagent of solution water removal lock.
Its front and back irreducible water saturation knots modification is calculated using the different organic solvent of various concentration, is shown in the example
Show, 0.4% ethanol solution water blocking damage releasing degree is preferable, and knots modification is higher than other solution.
Therefore preferably 0.4% ethanol solution
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of method for evaluating coal seam reservoirs water blocking damage characterized by comprising
Obtain the constraint fluid saturation X of coal sample；
According to the X, the infiltration loss ratio Y of the sample is obtained；
According to the Y, coal seam reservoirs water blocking damage degree is judged.
2. a kind of method for evaluating coal seam reservoirs water blocking damage according to claim 1, which is characterized in that the calculating rock core
The constraint fluid saturation X of sample includes:
Measure the T under the coal sample pressurization saturation state2Compose T21；
Measure the nuclear magnetic resonance T when coal sample dry sample2Compose T22；
According to the T21And T22, obtain the constraint fluid saturation X of sample.
3. a kind of method for evaluating coal seam reservoirs water blocking damage according to claim 2, which is characterized in that described according to
T21And T22, the constraint fluid saturation X for calculating sample includes:
Make the T respectively21And T22T2Cumulative porosity rate curve graph is composed, T is obtained21Summation curve and T22Summation curve；T2Spectrum is tired
Porosity curves figure is counted using the relaxation time as abscissa, using section porosity and/or cumulative porosity rate as ordinate；
According to the T21Summation curve and T22Summation curve obtains the constraint fluid saturation of the sample.
4. a kind of method for evaluating coal seam reservoirs water blocking damage according to claim 3, which is characterized in that described according to
T21Summation curve and T22Summation curve, the constraint fluid saturation for obtaining the sample include:
With the T22The signal amplitude maximum value of summation curve is that horizontal tangent is made at point of contact, obtains the tangent line and the T21It is accumulative
The intersection point of curve；
According to the intersection point, the corresponding relaxation time T of the intersection point is obtained2c；
The T2cThe saturation coal sample nuclear magnetic resonance T on the left side2The area and saturation coal sample nuclear magnetic resonance T of spectrum2The ratio of the gross area of spectrum
To fetter fluid saturation.
5. a kind of method for evaluating coal seam reservoirs water blocking damage according to claim 1, which is characterized in that described in the acquisition
The infiltration loss ratio Y of sample includes:
Y=0.5992X+23.045
In formula, Y is permeability damage rate, and X is constraint fluid saturation.
6. a kind of method for evaluating coal seam reservoirs water blocking damage according to claim 1, which is characterized in that described according to
Y determines that coal seam reservoirs water blocking damage is judged according to following table:
7. a kind of water lock releases liquid, which is characterized in that for releasing the water blocking damage, the water lock release liquid include such as down toward
Few one kind: ethyl alcohol, ethylene glycol ethyl ether, isopropanol.
8. a kind of water lock according to claim 7 releases liquid, which is characterized in that it is ethyl alcohol that the water lock, which releases liquid, described
Ethyl alcohol mass concentration is 0.4%.
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| CN201910687019.0A CN110376113A (en) | 2019-07-29 | 2019-07-29 | A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid |
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| CN201910687019.0A CN110376113A (en) | 2019-07-29 | 2019-07-29 | A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112836861A (en) * | 2021-01-12 | 2021-05-25 | 江苏师范大学 | Time-varying model establishment method for coal sample quality change rate under water-rock action |
| CN114002123A (en) * | 2021-10-29 | 2022-02-01 | 中国海洋石油集团有限公司 | Loose low-permeability sandstone particle migration experiment method |
| CN117269224A (en) * | 2023-11-21 | 2023-12-22 | 天津朔程科技有限公司 | Evaluation method and system for gas layer water lock injury |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746838A (en) * | 2011-04-22 | 2012-10-24 | 中国石油天然气股份有限公司 | Blocking remover of gas well shaft |
| CN103450867A (en) * | 2013-07-25 | 2013-12-18 | 中国科学院上海应用物理研究所 | Method for solving water lock effect |
| CN105018060A (en) * | 2015-07-07 | 2015-11-04 | 西南石油大学 | Agent for preventing and eliminating condensate gas well water block and retrograde condensation, and preparation and application methods thereof |
| CN105372166A (en) * | 2014-08-26 | 2016-03-02 | 中国石油天然气股份有限公司 | Method and device for obtaining permeability of argillaceous sandstone |
| CN106093299A (en) * | 2016-06-02 | 2016-11-09 | 西南石油大学 | A kind of tight gas reservoir drilling fluid damage evaluation experimental technique |
| CN106990131A (en) * | 2017-02-21 | 2017-07-28 | 上海大学 | A kind of nano-fluid changes the fast appraisement method of core wettability |
| CN107991335A (en) * | 2016-10-26 | 2018-05-04 | 中国石油天然气股份有限公司 | Tight sand Water-blocking damage evaluation test method |
| CN108570317A (en) * | 2017-03-13 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage |
| CN109001243A (en) * | 2018-08-30 | 2018-12-14 | 中国地质大学（北京） | A kind of method and apparatus of the dynamic water-blocking effect using low-field nuclear magnetic resonance evaluation coal |
-
2019
- 2019-07-29 CN CN201910687019.0A patent/CN110376113A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746838A (en) * | 2011-04-22 | 2012-10-24 | 中国石油天然气股份有限公司 | Blocking remover of gas well shaft |
| CN103450867A (en) * | 2013-07-25 | 2013-12-18 | 中国科学院上海应用物理研究所 | Method for solving water lock effect |
| CN105372166A (en) * | 2014-08-26 | 2016-03-02 | 中国石油天然气股份有限公司 | Method and device for obtaining permeability of argillaceous sandstone |
| CN105018060A (en) * | 2015-07-07 | 2015-11-04 | 西南石油大学 | Agent for preventing and eliminating condensate gas well water block and retrograde condensation, and preparation and application methods thereof |
| CN106093299A (en) * | 2016-06-02 | 2016-11-09 | 西南石油大学 | A kind of tight gas reservoir drilling fluid damage evaluation experimental technique |
| CN107991335A (en) * | 2016-10-26 | 2018-05-04 | 中国石油天然气股份有限公司 | Tight sand Water-blocking damage evaluation test method |
| CN106990131A (en) * | 2017-02-21 | 2017-07-28 | 上海大学 | A kind of nano-fluid changes the fast appraisement method of core wettability |
| CN108570317A (en) * | 2017-03-13 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage |
| CN109001243A (en) * | 2018-08-30 | 2018-12-14 | 中国地质大学（北京） | A kind of method and apparatus of the dynamic water-blocking effect using low-field nuclear magnetic resonance evaluation coal |
Non-Patent Citations (3)
| Title |
|---|
| 张冲等: "基于实验室条件下的核磁共振测井束缚水饱和度计算方法研究", 《核电子学与探测技术》 * |
| 张彬彬等: "《伊通盆地梁家-万昌构造带束缚水饱和度研究》", 《科学技术与工程》 * |
| 赵毅等: "《基于核磁共振和压汞实验的储层束缚水饱和度计算方法》", 《科技导报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112836861A (en) * | 2021-01-12 | 2021-05-25 | 江苏师范大学 | Time-varying model establishment method for coal sample quality change rate under water-rock action |
| CN112836861B (en) * | 2021-01-12 | 2022-02-01 | 江苏师范大学 | Time-varying model establishment method for coal sample quality change rate under water-rock action |
| CN114002123A (en) * | 2021-10-29 | 2022-02-01 | 中国海洋石油集团有限公司 | Loose low-permeability sandstone particle migration experiment method |
| CN114002123B (en) * | 2021-10-29 | 2024-05-10 | 中国海洋石油集团有限公司 | Loose hypotonic sandstone particle migration experimental method |
| CN117269224A (en) * | 2023-11-21 | 2023-12-22 | 天津朔程科技有限公司 | Evaluation method and system for gas layer water lock injury |
| CN117269224B (en) * | 2023-11-21 | 2024-02-09 | 天津朔程科技有限公司 | Evaluation method and system for gas layer water lock injury |
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