CN106644875A - Shale capillary pressure and water saturation measurement method - Google Patents
Shale capillary pressure and water saturation measurement method Download PDFInfo
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- CN106644875A CN106644875A CN201610887320.2A CN201610887320A CN106644875A CN 106644875 A CN106644875 A CN 106644875A CN 201610887320 A CN201610887320 A CN 201610887320A CN 106644875 A CN106644875 A CN 106644875A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000691 measurement method Methods 0.000 title abstract 3
- 238000001035 drying Methods 0.000 claims abstract description 116
- 238000003795 desorption Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims description 201
- 239000007788 liquid Substances 0.000 claims description 116
- 238000009938 salting Methods 0.000 claims description 116
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 36
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 36
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 9
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 9
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
-
- 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
-
- 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
- G01N2015/0866—Sorption
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Fluid Mechanics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a shale capillary pressure and water saturation measurement method. The method includes the steps of shale sample grinding, drying, cooling, moisture adsorption by a saline solution, desorption by a saline solution and measurement. The shale capillary pressure and water saturation measurement method can be used for pore structure studies and determination of porosity, relative permeability, shale wettability and irreducible water saturation of shale reservoir strata, and has extensive application value in terms of reservoir stratum performance evaluation and reserve calculation of shale. Measuring a relationship curve between capillary pressure and water saturation of the shale is of great significance to efficient development and utilization of unconventional shale gas resources.
Description
Technical field
The invention belongs to natural oil gas development technology field, more particularly to a kind of shale capillary pressure and water saturation
Measuring method.
Background technology
With increase of the World Economics to petroleum resources demand, the exploitation of unconventional shale gas resource are extensively closed
Note, progressively becomes the strategic supplement of conventional gas and oil resources development and utilization.Shale capillary pressure and saturation degree relation, are shale gas
An important relationship curve in exploitation is hidden, can be used for the aspects such as evaluating reservoir, the reserves calculating of shale.It is usually used at present determining
The method of rock capillary pressure curve mainly has：Semi-permeable plate method, centrifugal process and mercury injection method.What baffle method and centrifugal process were measured
Highest capillary pressure is typically confined within 1000psi, and for hypotonic fine and close shale, pressure is still too low；Mercury injection method
Required pressure (usual scope is in 5000～10 000psi) can be reached, but the hollow billet that converts is gone using non-reservoir fluid, condition
Pressure can produce incorrect result, and can be bigger for the shale deviation containing clay.At present, for correct measurement shale hollow billet
Research in terms of pressure extremely lacks, and research is set up a kind of measurement experimental provision and method of shale capillary pressure and seems and have very much
It is necessary.
The content of the invention
The purpose of the present invention is：The measuring method of a kind of shale capillary pressure and water saturation is provided, shale is realized
The measurement of the relation curve of particle capillary pressure and water saturation, for the exploitation of unconventional shale gas resource have weight
Want meaning.
The technical scheme is that：The measuring method of a kind of shale capillary pressure and water saturation, including following step
Suddenly：
A. shale samples are ground into the shale samples particle of different-grain diameter in 250 μm～800 μ ms；
B. shale samples particle is loaded into wide-mouth bottle；
C. will be equipped with the wide-mouth bottle of shale samples particle carries out 110 DEG C of drying in 24 hours；
D. by drying after the wide-mouth bottle equipped with shale samples particle be positioned over bottom equipped with drier glassware in
It is cooled to room temperature；
E. the wide-mouth bottle that will be equipped with shale samples particle takes out from glassware of the bottom equipped with drier, claims its quality
Afterwards, in being positioned over glassware of the bottom equipped with saturation LiCl salting liquid；
F. glassware of the bottom equipped with saturation LiCl salting liquid that placed the wide-mouth bottle of shale samples particle is put into
In 50 DEG C of insulating box, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When
When claiming the result of its quality to tend to fixed value daily, shale samples particle capillary pressure reaches balance, by shale samples particle
Wide-mouth bottle from bottom equipped with saturation LiCl salting liquid glassware in take out, be placed on drying baker carry out 24 hours 110 DEG C
Drying, after drying, claims its quality；
G. will from bottom equipped with saturation LiCl salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation MgCl2In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation MgCl from bottom2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
H. saturation MgCl will be housed from bottom2In the glassware of salting liquid take out, and dry claim its quality after being equipped with
The wide-mouth bottle of shale samples particle, in being positioned over glassware of the bottom equipped with saturation NaBr salting liquid, is then placed in 50 DEG C
In insulating box, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim when daily
When the result of its quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with shale samples particle
Wide-mouth bottle takes out from glassware of the bottom equipped with saturation NaBr salting liquid, and being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
I. will from bottom equipped with saturation NaBr salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation NaNO3In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation NaNO from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
J. saturation NaNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after being equipped with
The wide-mouth bottle of shale samples particle, in being positioned over glassware of the bottom equipped with saturation KCl salting liquid, is then placed in 50 DEG C of perseverance
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle takes out from glassware of the bottom equipped with saturation KCl salting liquid, and being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
K. will from bottom equipped with saturation KCl salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation KNO3In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation KNO from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
L. saturation KNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation K2SO4In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation K from bottom2SO4Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
M. saturation K will be housed from bottom2Take out in the glassware of SO salting liquids, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation KNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And KNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
N. saturation KNO will be housed from bottom3Take out in the glassware of salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned in glassware of the bottom equipped with saturation KCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from perseverance
The wide-mouth bottle equipped with shale samples particle is taken out in incubator, its quality is claimed respectively；When the result for claiming its quality daily tends to fixed
During value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
Take out in the glassware of KCl salting liquids, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
O. will take out from glassware of the bottom equipped with saturation KCl salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation NaNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And NaNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
P. saturation NaNO will be housed from bottom3Take out in the glassware of salting liquid, will be equipped with the wide of shale samples particle
Mouth bottle is positioned in glassware of the bottom equipped with saturation NaBr salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours
The wide-mouth bottle equipped with shale samples particle is taken out from insulating box, its quality is claimed respectively；Tend to when the result of its quality is claimed daily
During fixed value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with from bottom
Take out in the glassware of saturation NaBr salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
Q. will take out from glassware of the bottom equipped with saturation NaBr salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation MgCl2In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And MgCl2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
R. saturation MgCl will be housed from bottom2Take out in the glassware of salting liquid, will be equipped with the wide of shale samples particle
Mouth bottle is positioned in glassware of the bottom equipped with saturation LiCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours
The wide-mouth bottle equipped with shale samples particle is taken out from insulating box, its quality is claimed respectively；Tend to when the result of its quality is claimed daily
During fixed value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with from bottom
Take out in the glassware of saturation LiCl salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
S. the porosity of shale samples particle is measuredAnd density pT, with reference to the unit mass page that step F to step R is obtained
Water content W of rock sample particleg, calculate the water saturation of shale samples particle；
SwFor the water saturation of shale samples particle,For the porosity of shale samples particle, ρTFor shale samples particle
Density, ρwFor the density of water, WgFor the water content of unit quality shale samples particle；
T. according to Kelvin equation, the capillary pressure of shale samples particle is calculated；
PcFor the capillary pressure of shale；R is universal gas constant；T is temperature；VmTo condense the molal volume of drop；P is
Water vapor in air pressure；p0For saturated vapor pressure；
U. according to the water saturation and capillary pressure result of the above-mentioned shale samples particle for calculating, shale sample is obtained
The relation curve of product particle capillary pressure and water saturation.
The present invention cannot be only used for the pore configuration research of shale reservoir, porosity, relative permeability, shale wetability and
Irreducible water saturation determine, and shale reservoir performance assessment, reserves calculate etc. aspect be with a wide range of applications, survey
The capillary pressure of amount shale and the relation curve of water saturation, have for the Efficient Development of unconventional shale gas resource is utilized
Significance.
Description of the drawings
Fig. 1 is flow chart of the present invention；
Fig. 2 implements schematic diagram for the present invention.
Specific embodiment
Embodiment 1：Referring to Fig. 1, Fig. 2, the measuring method of a kind of shale capillary pressure and water saturation, including following step
Suddenly：
A. shale samples are ground into the shale samples particle of different-grain diameter in 250 μm～800 μ ms；
B. shale samples particle is loaded into wide-mouth bottle；
C. will be equipped with the wide-mouth bottle of shale samples particle carries out 110 DEG C of drying in 24 hours；
D. by drying after the wide-mouth bottle equipped with shale samples particle be positioned over bottom equipped with drier glassware in
It is cooled to room temperature；
E. the wide-mouth bottle that will be equipped with shale samples particle takes out from glassware of the bottom equipped with drier, claims its quality
Afterwards, in being positioned over glassware of the bottom equipped with saturation LiCl salting liquid；
F. glassware of the bottom equipped with saturation LiCl salting liquid that placed the wide-mouth bottle of shale samples particle is put into
In 50 DEG C of insulating box, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When
When claiming the result of its quality to tend to fixed value daily, shale samples particle capillary pressure reaches balance, by shale samples particle
Wide-mouth bottle from bottom equipped with saturation LiCl salting liquid glassware in take out, be placed on drying baker carry out 24 hours 110 DEG C
Drying, after drying, claims its quality；
G. will from bottom equipped with saturation LiCl salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation MgCl2In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation MgCl from bottom2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
H. saturation MgCl will be housed from bottom2In the glassware of salting liquid take out, and dry claim its quality after being equipped with
The wide-mouth bottle of shale samples particle, in being positioned over glassware of the bottom equipped with saturation NaBr salting liquid, is then placed in 50 DEG C
In insulating box, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim when daily
When the result of its quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with shale samples particle
Wide-mouth bottle takes out from glassware of the bottom equipped with saturation NaBr salting liquid, and being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
I. will from bottom equipped with saturation NaBr salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation NaNO3In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation NaNO from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of bakings in 24 hours
It is dry, after drying, claim its quality；
J. saturation NaNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after being equipped with
The wide-mouth bottle of shale samples particle, in being positioned over glassware of the bottom equipped with saturation KCl salting liquid, is then placed in 50 DEG C of perseverance
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle takes out from glassware of the bottom equipped with saturation KCl salting liquid, and being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
K. will from bottom equipped with saturation KCl salting liquid glassware in take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation KNO3In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation KNO from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
L. saturation KNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after equipped with page
The wide-mouth bottle of rock sample particle, is positioned over bottom equipped with saturation K2SO4In the glassware of salting liquid, 50 DEG C of perseverance is then placed in
In incubator, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；Claim it when daily
When the result of quality tends to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide of shale samples particle
Mouth bottle is equipped with saturation K from bottom2SO4Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
M. saturation K will be housed from bottom2Take out in the glassware of SO salting liquids, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation KNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And KNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
N. saturation KNO will be housed from bottom3Take out in the glassware of salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned in glassware of the bottom equipped with saturation KCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from perseverance
The wide-mouth bottle equipped with shale samples particle is taken out in incubator, its quality is claimed respectively；When the result for claiming its quality daily tends to fixed
During value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
Take out in the glassware of KCl salting liquids, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
O. will take out from glassware of the bottom equipped with saturation KCl salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation NaNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And NaNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
P. saturation NaNO will be housed from bottom3Take out in the glassware of salting liquid, will be equipped with the wide of shale samples particle
Mouth bottle is positioned in glassware of the bottom equipped with saturation NaBr salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours
The wide-mouth bottle equipped with shale samples particle is taken out from insulating box, its quality is claimed respectively；Tend to when the result of its quality is claimed daily
During fixed value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with from bottom
Take out in the glassware of saturation NaBr salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
Q. will take out from glassware of the bottom equipped with saturation NaBr salting liquid, will be equipped with the wide-mouth of shale samples particle
Bottle is positioned over bottom equipped with saturation MgCl2In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from
The wide-mouth bottle equipped with shale samples particle is taken out in insulating box, its quality is claimed respectively；When the result for claiming its quality daily tends to solid
During definite value, shale samples particle water vapor desorption reaches balance, will be equipped with the wide-mouth bottle of shale samples particle from bottom equipped with full
And MgCl2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
R. saturation MgCl will be housed from bottom2Take out in the glassware of salting liquid, will be equipped with the wide of shale samples particle
Mouth bottle is positioned in glassware of the bottom equipped with saturation LiCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours
The wide-mouth bottle equipped with shale samples particle is taken out from insulating box, its quality is claimed respectively；Tend to when the result of its quality is claimed daily
During fixed value, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with from bottom
Take out in the glassware of saturation LiCl salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its matter
Amount；
S. the porosity of shale samples particle is measuredAnd density pT, with reference to the unit mass page that step F to step R is obtained
Water content W of rock sample particleg, calculate the water saturation of shale samples particle；
SwFor the water saturation of shale samples particle,For the porosity of shale samples particle, ρTFor shale samples particle
Density, ρwFor the density of water, WgFor the water content of unit quality shale samples particle；
T. according to Kelvin equation, the capillary pressure of shale samples particle is calculated；
PcFor the capillary pressure of shale；R is universal gas constant；T is temperature；VmTo condense the molal volume of drop；P is
Water vapor in air pressure；p0For saturated vapor pressure；
U. according to the water saturation and capillary pressure result of the above-mentioned shale samples particle for calculating, shale sample is obtained
The relation curve of product particle capillary pressure and water saturation.
Claims (1)
1. the measuring method of a kind of shale capillary pressure and water saturation, it is characterised in that comprise the following steps：
A. shale samples are ground into the shale samples particle of different-grain diameter in 250 μm～800 μ ms；
B. shale samples particle is loaded into wide-mouth bottle；
C. will be equipped with the wide-mouth bottle of shale samples particle carries out 110 DEG C of drying in 24 hours；
D. by drying after the wide-mouth bottle equipped with shale samples particle be positioned over bottom equipped with drier glassware in it is cold and
To room temperature；
E. the wide-mouth bottle that will be equipped with shale samples particle takes out from glassware of the bottom equipped with drier, after claiming its quality,
In being positioned over glassware of the bottom equipped with saturation LiCl salting liquid；
F. glassware of the bottom equipped with saturation LiCl salting liquid that placed the wide-mouth bottle of shale samples particle is put into into 50 DEG C
Insulating box in, per 24 hours from insulating box take out equipped with shale samples particle wide-mouth bottle, its quality is claimed respectively；When daily
When claiming the result of its quality to tend to fixed value, shale samples particle capillary pressure reaches balance, by the wide of shale samples particle
Mouth bottle takes out from glassware of the bottom equipped with saturation LiCl salting liquid, and being placed on drying baker carries out 110 DEG C of drying in 24 hours,
After drying, claim its quality；
G. will from bottom equipped with saturation LiCl salting liquid glassware in take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, is positioned over bottom equipped with saturation MgCl2In the glassware of salting liquid, 50 DEG C of insulating box is then placed in
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Saturation MgCl is housed from bottom2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, dries
After dry, claim its quality；
H. saturation MgCl will be housed from bottom2In the glassware of salting liquid take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, in being positioned over glassware of the bottom equipped with saturation NaBr salting liquid, is then placed in 50 DEG C of insulating box
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Take out from glassware of the bottom equipped with saturation NaBr salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, drying
Afterwards, its quality is claimed；
I. will from bottom equipped with saturation NaBr salting liquid glassware in take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, is positioned over bottom equipped with saturation NaNO3In the glassware of salting liquid, 50 DEG C of insulating box is then placed in
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Saturation NaNO is housed from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, dries
After dry, claim its quality；
J. saturation NaNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, in being positioned over glassware of the bottom equipped with saturation KCl salting liquid, is then placed in 50 DEG C of insulating box
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Take out from glassware of the bottom equipped with saturation KCl salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, drying
Afterwards, its quality is claimed；
K. will from bottom equipped with saturation KCl salting liquid glassware in take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, is positioned over bottom equipped with saturation KNO3In the glassware of salting liquid, 50 DEG C of insulating box is then placed in
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Saturation KNO is housed from bottom3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, drying
Afterwards, its quality is claimed；
L. saturation KNO will be housed from bottom3In the glassware of salting liquid take out, and dry claim its quality after equipped with shale sample
The wide-mouth bottle of product particle, is positioned over bottom equipped with saturation K2SO4In the glassware of salting liquid, 50 DEG C of insulating box is then placed in
In, the wide-mouth bottle equipped with shale samples particle was taken out from insulating box per 24 hours, its quality is claimed respectively；When claiming its quality daily
Result when tending to fixed value, shale samples particle capillary pressure reaches balance, will be equipped with the wide-mouth bottle of shale samples particle
Saturation K is housed from bottom2SO4Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, drying
Afterwards, its quality is claimed；
M. saturation K will be housed from bottom2Take out in the glassware of SO salting liquids, the wide-mouth bottle that will be equipped with shale samples particle is put
Bottom is placed in equipped with saturation KNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from constant temperature
The wide-mouth bottle equipped with shale samples particle is taken out in case, its quality is claimed respectively；Tend to fixed value when the result of its quality is claimed daily
When, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
KNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
N. saturation KNO will be housed from bottom3Take out in the glassware of salting liquid, the wide-mouth bottle that will be equipped with shale samples particle is put
In being placed in glassware of the bottom equipped with saturation KCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from insulating box
It is middle to take out the wide-mouth bottle equipped with shale samples particle, its quality is claimed respectively；When the result for claiming its quality daily tends to fixed value,
Shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation KCl salt from bottom
Take out in the glassware of solution, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
O. will take out from glassware of the bottom equipped with saturation KCl salting liquid, the wide-mouth bottle that will be equipped with shale samples particle is put
Bottom is placed in equipped with saturation NaNO3In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from constant temperature
The wide-mouth bottle equipped with shale samples particle is taken out in case, its quality is claimed respectively；Tend to fixed value when the result of its quality is claimed daily
When, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
NaNO3Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
P. saturation NaNO will be housed from bottom3Take out in the glassware of salting liquid, the wide-mouth bottle that will be equipped with shale samples particle is put
In being placed in glassware of the bottom equipped with saturation NaBr salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from constant temperature
The wide-mouth bottle equipped with shale samples particle is taken out in case, its quality is claimed respectively；Tend to fixed value when the result of its quality is claimed daily
When, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
Take out in the glassware of NaBr salting liquids, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
Q. will take out from glassware of the bottom equipped with saturation NaBr salting liquid, the wide-mouth bottle that will be equipped with shale samples particle is put
Bottom is placed in equipped with saturation MgCl2In the glassware of salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from constant temperature
The wide-mouth bottle equipped with shale samples particle is taken out in case, its quality is claimed respectively；Tend to fixed value when the result of its quality is claimed daily
When, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
MgCl2Take out in the glassware of salting liquid, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
R. saturation MgCl will be housed from bottom2Take out in the glassware of salting liquid, the wide-mouth bottle that will be equipped with shale samples particle is put
In being placed in glassware of the bottom equipped with saturation LiCl salting liquid, in being then placed in 50 DEG C of insulating box, per 24 hours from constant temperature
The wide-mouth bottle equipped with shale samples particle is taken out in case, its quality is claimed respectively；Tend to fixed value when the result of its quality is claimed daily
When, shale samples particle water vapor desorption reaches balance, and the wide-mouth bottle that will be equipped with shale samples particle is equipped with saturation from bottom
Take out in the glassware of LiCl salting liquids, being placed on drying baker carries out 110 DEG C of drying in 24 hours, after drying, claims its quality；
S. the porosity of shale samples particle is measuredAnd density pT, with reference to the unit mass shale sample that step F to step R is obtained
Water content W of product particleg, calculate the water saturation of shale samples particle；
SwFor the water saturation of shale samples particle,For the porosity of shale samples particle, ρTFor the close of shale samples particle
Degree, ρwFor the density of water, WgFor the water content of unit quality shale samples particle；
T. according to Kelvin equation, the capillary pressure of shale samples particle is calculated；
PcFor the capillary pressure of shale；R is universal gas constant；T is temperature；VmTo condense the molal volume of drop；P is air
Middle water vapor pressure；p0For saturated vapor pressure；
U. according to the water saturation and capillary pressure result of the above-mentioned shale samples particle for calculating, shale samples are obtained
The relation curve of grain capillary pressure and water saturation.
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| CN201610887320.2A CN106644875A (en) | 2016-10-11 | 2016-10-11 | Shale capillary pressure and water saturation measurement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610887320.2A CN106644875A (en) | 2016-10-11 | 2016-10-11 | Shale capillary pressure and water saturation measurement method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107402169A (en) * | 2017-07-28 | 2017-11-28 | 中国科学院力学研究所 | A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack |
| CN107727549A (en) * | 2017-09-27 | 2018-02-23 | 中国科学院力学研究所 | A kind of shale microscopic void measuring method and equipment |
| CN111157424A (en) * | 2020-01-07 | 2020-05-15 | 中南大学 | Rock material pore size distribution measuring method |
| CN112683718A (en) * | 2020-12-28 | 2021-04-20 | 重庆大学 | Device and method for measuring content of soil combined water and permeability coefficient |
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2016
- 2016-10-11 CN CN201610887320.2A patent/CN106644875A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402169A (en) * | 2017-07-28 | 2017-11-28 | 中国科学院力学研究所 | A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack |
| CN107402169B (en) * | 2017-07-28 | 2019-09-06 | 中国科学院力学研究所 | A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack |
| CN107727549A (en) * | 2017-09-27 | 2018-02-23 | 中国科学院力学研究所 | A kind of shale microscopic void measuring method and equipment |
| CN111157424A (en) * | 2020-01-07 | 2020-05-15 | 中南大学 | Rock material pore size distribution measuring method |
| CN112683718A (en) * | 2020-12-28 | 2021-04-20 | 重庆大学 | Device and method for measuring content of soil combined water and permeability coefficient |
| CN112683718B (en) * | 2020-12-28 | 2022-02-18 | 重庆大学 | Device and method for measuring content of soil combined water and permeability coefficient |
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