CN110320136A - The measurement device and measuring method of shale core effecive porosity - Google Patents
The measurement device and measuring method of shale core effecive porosity Download PDFInfo
- Publication number
- CN110320136A CN110320136A CN201810266708.XA CN201810266708A CN110320136A CN 110320136 A CN110320136 A CN 110320136A CN 201810266708 A CN201810266708 A CN 201810266708A CN 110320136 A CN110320136 A CN 110320136A
- Authority
- CN
- China
- Prior art keywords
- core
- unit
- measured
- holding unit
- measurement device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000011435 rock Substances 0.000 claims abstract description 116
- 238000002347 injection Methods 0.000 claims abstract description 82
- 239000007924 injection Substances 0.000 claims abstract description 82
- 239000012530 fluid Substances 0.000 claims description 44
- 229920006395 saturated elastomer Polymers 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003556 assay Methods 0.000 abstract description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 17
- 230000008859 change Effects 0.000 description 11
- 239000003208 petroleum Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000005311 nuclear magnetism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003079 shale oil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001225 nuclear magnetic resonance method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the measurement devices and measuring method of a kind of shale core effecive porosity.The measurement device includes: vacuum unit, core holding unit, confined pressure unit, intermediate receptacle, injection unit and control acquisition unit；Wherein, one end of core holding unit is connected with vacuum unit, and the other end is connected with intermediate receptacle；Confined pressure unit is connected on core holding unit；The other end of intermediate receptacle is connected with injection unit；Control acquisition unit is connected to injection unit, for acquiring the data of injection unit.The advantage is that: assay device structures of the invention are simple, convenient for assembling in real time, the measuring method realized using the present apparatus is simple, accurate, the effecive porosity of rock sample under the conditions of measurement oil-gas reservoir that can be lossless.
Description
Technical field
The present invention relates to oil-gas field development technical fields, more particularly, to a kind of survey of shale core effecive porosity
Determine device and measuring method.
Background technique
In oil-gas field development technical field, it is reservoir properties that porosity, which reflects porous media to the storage capacity of fluid,
One of important parameter of research, can be applied to Oil/Gas Reservoir Assessment and reserves calculate.Shale oil-gas exploration and development has become the world
Hot spot, China have unconventional shale oil and gas reserves abundant, and the potentiality position of mining resources is at the forefront in the world.With shale oil gas
Quick exploitation, the accurate measurement of shale porosity, the determination of rock porosity under the conditions of especially practical oil-gas reservoir, to shale
The exploration and development and evaluation of oil gas are of great significance.
Currently, indoor shale porosity test method mainly have helium method, nitrogen adsorption methods, scanning electron microscope method, mercury injection method,
It is saturated flow process and low-field nuclear magnetic resonance method.Wherein, helium method uses helium porosimeter, and measuring device is the sample of fixed volume
Cup, rock core are placed in container, which can not apply overlying formation pressure to rock, differ larger with oil-gas reservoir condition；Nitrogen
Absorption method sample is to crush sample, will crush sample and is put into cavity container, calculates sample porosity by measurement gas absorption amount,
The device equally can not to rock therein apply overlying formation pressure, and measure be sample total porosity, contain non-
Interconnected pore space；Mercury injection method uses mercury injection apparatus, and rock is placed in sample cell, can not apply burden pressure to wherein rock sample；Often
Rule saturation flow process is the saturated core in bottle,suction, is to measure rock saturation degree by balance weighing under normal pressure, cannot
The porosity of rock under the conditions of reflection oil-gas reservoir；Scanning electron microscope method is to calculate rock by focused ion beam scanning electron microscope come quantitative
Porosity, what is measured is the porosity of regional area, it is difficult on the whole measure shale rock porosity；Low field nuclear-magnetism is total
Vibration method is rock porosity to be measured using nuclear-magnetism instrument, and its measurement parameter is echo time and waiting time, is based on normal
The measurement parameter of reservoir is advised, the porosity measured in this way is not shale porosity true value.
Therefore, it is necessary to the measurement device and measuring method of a kind of shale core effecive porosity are developed, it can be lossless, quasi-
The effecive porosity of rock sample under the conditions of true measurement oil-gas reservoir.
The information for being disclosed in background of invention part is merely intended to deepen the reason to general background technique of the invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Summary of the invention
The invention proposes the measurement devices and measuring method of a kind of shale core effecive porosity, can pass through measurement
Device is lossless, under the conditions of accurate measurement oil-gas reservoir rock sample effecive porosity.
According to an aspect of the invention, it is proposed that a kind of measurement device of shale core effecive porosity, the measurement dress
Set includes: vacuum unit, core holding unit, confined pressure unit, intermediate receptacle, injection unit and control acquisition unit；
Wherein, one end of the core holding unit is connected with vacuum unit, and the other end is connected with intermediate receptacle；
The confined pressure unit is connected on the core holding unit；
The other end of the intermediate receptacle is connected with injection unit；
The control acquisition unit is connected to the injection unit, for acquiring the data of the injection unit.
Preferably, the measurement device further include:
First two-way valve, first two-way valve are set between the core holding unit and the vacuum unit；
Second two-way valve, second two-way valve are set between the core holding unit and the confined pressure unit；
Third two-way valve, the third two-way valve is set between the core holding unit and the intermediate receptacle, close
The core holding unit；
4th two-way valve, the 4th two-way valve is set between the core holding unit and the intermediate receptacle, close
The intermediate receptacle.
Preferably, the injection unit is injection pump.
Preferably, the precision of the injection pump is not less than 0.005mL.
Preferably, the control acquisition unit is desktop computer, laptop or tablet computer.
According to another aspect of the invention, it is proposed that a kind of measuring method of shale core effecive porosity, the measurement
Method includes:
Rock core to be measured is placed in core holding unit, confining pressure is applied to the core holding unit, and to the rock to be measured
The heart vacuumizes；
By injection unit to the liquid pressure rise in intermediate receptacle to experimental pressure, the compressed coefficient of the fluid is obtained；
It is gradually repeatedly saturated the rock core to be measured, the stream of the rock core to be measured is entered by control acquisition unit record
Body volume；
The cavity volume of the fluid volume, the measurement device based on entrance and the fluid of entrance are through overcompression
Volume change, obtain the porosity of the rock core to be measured.
Preferably, being repeatedly gradually saturated the rock core to be measured includes:
Under atmospheric conditions, the fluid in the intermediate receptacle is pushed to inject the rock to be measured by the injection unit
The heart makes the rock core saturation to be measured；
Injection pressure and the confining pressure are improved, the rock core saturation to be measured is made；
Repeat the above steps, when the injection pressure reaches strata pressure, and the confining pressure reaches burden pressure, record into
Enter the fluid volume of the rock core to be measured.
Preferably, the rock core to be measured is put into before the core holding unit, is pre-processed to the rock core to be measured.
Preferably, carrying out pretreatment to the rock core to be measured includes:
The rock core to be measured is placed in insulating box and is dried, after drying to constant weight, taking-up is placed in drier cooling；
Measure the diameter and length of the rock core to be measured；
Measure the cavity volume of the measurement device；
The pretreated rock core to be measured is placed in the core holding unit.
Preferably, the cavity volume of the measurement device includes the dead volume of the core holding unit, the body of connecting pipe
The volume of long-pending and each two-way valve.
The measurement device and measuring method of a kind of shale core effecive porosity according to the present invention, the advantage is that: this
The assay device structures of invention are simple, and convenient for assembling in real time, the measuring method realized using the present apparatus is simple, accurate, Neng Gouwu
The effecive porosity of rock sample under the conditions of the measurement oil-gas reservoir of damage.
The device of the invention and method have other characteristics and advantages will be in the attached drawing and subsequent tool being incorporated herein
It is stated in detail in body embodiment, these the drawings and specific embodiments are used together to explain specific principle of the invention.
Detailed description of the invention
Exemplary embodiment of the present is described in more detail in conjunction with the accompanying drawings, of the invention is above-mentioned and other
Purpose, feature and advantage will be apparent, wherein in exemplary embodiments of the present invention, identical appended drawing reference is usual
Represent same parts.
Fig. 1 shows a kind of measurement dress of shale core effecive porosity of an exemplary embodiment according to the present invention
The structural schematic diagram set.
Fig. 2 shows a kind of measurement sides of shale core effecive porosity of an exemplary embodiment according to the present invention
The step flow chart of method.
Description of symbols:
1, vacuum unit；2, the first two-way valve；3, core holding unit；4, the second two-way valve；5, confined pressure unit；6, third
Two-way valve；7, the 4th two-way valve；8, intermediate receptacle；9, injection unit；10, acquisition unit is controlled.
Specific embodiment
The present invention will be described in more detail below with reference to accompanying drawings.Although showing the preferred embodiment of the present invention in attached drawing,
However, it is to be appreciated that may be realized in various forms the present invention and should not be limited by the embodiments set forth herein.On the contrary, providing
These embodiments are of the invention more thorough and complete in order to make, and can will fully convey the scope of the invention to ability
The technical staff in domain.
The present invention provides a kind of measurement device of shale core effecive porosity, which includes: to vacuumize list
Member, core holding unit, confined pressure unit, intermediate receptacle, injection unit and control acquisition unit；
Wherein, one end of core holding unit is connected with vacuum unit, and the other end is connected with intermediate receptacle；
Confined pressure unit is connected on core holding unit；
The other end of intermediate receptacle is connected with injection unit；
Control acquisition unit is connected to injection unit, for acquiring the data of injection unit.
Wherein, measurement device is to be sequentially connected vacuum unit, core holding unit, intermediate receptacle and injection unit, into
One step, confined pressure unit is connected on core holding unit, for applying confining pressure to rock core to be measured, injection unit and control are acquired
Unit connection, for recording the volume change of injection unit.
Preferably, measurement device further include:
First two-way valve, the first two-way valve are set between core holding unit and vacuum unit；
Second two-way valve, the second two-way valve are set between core holding unit and confined pressure unit；
Third two-way valve, third two-way valve are set between core holding unit and intermediate receptacle, close to core holding unit；
4th two-way valve, the 4th two-way valve are set between core holding unit and intermediate receptacle, close to intermediate receptacle.
By opening the first two-way valve, closes third two-way valve and measurement device is vacuumized, first liang is closed after vacuumizing
Port valve opens third two-way valve and the 4th two-way valve, is injected the fluid in intermediate receptacle in rock core to be measured by injection unit,
It is saturated rock core to be measured, confining pressure is applied to rock core to be measured by opening the second two-way valve.
Preferably, injection unit is injection pump.
Wherein, injection pump can choose Quizix injection pump, and but it is not limited to this, and can be those skilled in the art can
Any injection pump expected.
Preferably, the precision of injection pump is not less than 0.005mL.
Wherein, control acquisition unit is desktop computer, laptop or tablet computer.
Assay device structures of the invention are simple, convenient for assembling in real time.
The invention also provides a kind of measuring method of shale core effecive porosity, which includes:
Rock core to be measured is placed in core holding unit, confining pressure is applied to core holding unit, and to rock core vacuumizing to be measured；
By injection unit to the liquid pressure rise in intermediate receptacle to experimental pressure, the compressed coefficient of fluid is obtained；
It is gradually repeatedly saturated rock core to be measured, the fluid volume of rock core to be measured is entered by control acquisition unit record；
The cavity volume of fluid volume, measurement device based on entrance and the fluid of entrance through the volume change of overcompression,
Obtain the porosity of rock core to be measured.
Wherein, the compressed coefficient is the volume change for calculating fluid with pressure change when, to eliminate the compression of fluid
Property the error of experimental result is influenced.
The variation of saturation front and back injection unit volume includes the fluid volume for entering rock core to be measured, the cavity body of measurement device
The volume change that fluid is generated due to compressibility in long-pending and intermediate receptacle, the injected slurry volume of injection unit subtract measurement dress
The cavity volume set, then the volume generated due to the fluid compression in intermediate receptacle is subtracted, it is exactly the fluid into rock core to be measured
Volume, the fluid volume of rock core to be measured is divided by the skeleton volume of rock core to be measured, as effecive porosity.
Specifically, after rock core to be measured being placed in core holding unit, the leakproofness of measurement device is checked, and pass through confining pressure list
Member applies the confining pressure of 2.5MPa to the rock core to be measured in core holding unit, by opening the first two-way valve, closes third two-way valve,
To rock core vacuumizing to be measured 48 hours, wherein fluid is placed in intermediate receptacle, by injection unit to the intermediate appearance equipped with fluid
Device boosting, pressure be raised to experiment needed for pressure when, by control acquisition unit record injection unit volume change, and then calculate
The compressed coefficient of fluid is repeatedly gradually saturated rock core to be measured, and the fluid body of rock core to be measured is entered by control acquisition unit record
Product subtracts volume change caused by Fluid pressure increases by saturation front and back injection unit volume change, then subtracts measurement device
Dead volume, obtain the fluid volume into rock core to be measured, and then calculate the effecive porosity for obtaining rock core to be measured.
It wherein, is 2.5MPa, pumpdown time 48h according to the general confining pressure of relevant criterion, pressure needed for testing is generally oil
The strata pressure of gas reservoir, depending on oil field.
Wherein, being repeatedly gradually saturated rock core to be measured includes:
Under atmospheric conditions, it pushes the fluid in intermediate receptacle to inject rock core to be measured by injection unit, makes rock to be measured
Heart saturation；
Injection pressure and confining pressure are improved, rock core to be measured is saturated；
It repeats the above steps, when injection pressure reaches strata pressure, and confining pressure reaches burden pressure, record enters rock to be measured
The fluid volume of the heart.
Specifically, intermediate receptacle is connected by third two-way valve and the 4th two-way valve with core holding unit, opens the 4th liang
The air in connecting pipe is discharged in port valve, the 4th two-way valve is closed after connecting pipe trickle, injection is single at this time for record
The volume of member will close the first two-way valve after vacuumizing, open third two-way valve and the 4th two-way valve, pass through injection unit
Fluid in intermediate receptacle is injected in rock core to be measured, rock core to be measured is saturated, when the volume of unit to be implanted is no longer changed,
The confining pressure of confined pressure unit application and the injection pressure of injection unit are improved simultaneously, the confining pressure of initial stage is higher than injection pressure,
Injection pressure slowly increases, and is further continued for improving injection pressure after fluid does not enter back into rock core to be measured after increasing every time, to be implanted
After pressure rises to strata pressure, confining pressure is improved to burden pressure, after unit to be implanted is stablized, passes through control acquisition unit record note
The volume for entering unit, the volume as the injection unit after saturation.
Wherein, burden pressure is a fixed value, is generally determined according to specific oil field.
Preferably, rock core to be measured is put into before core holding unit, is pre-processed to rock core to be measured.
Wherein, carrying out pretreatment to rock core to be measured includes:
Rock core to be measured is placed in insulating box and is dried, after drying to constant weight, taking-up is placed in drier cooling；
Measure the diameter and length of rock core to be measured；
Measure the cavity volume of measurement device；
Pretreated rock core to be measured is placed in core holding unit.
Specifically, rock core to be measured is placed in insulating box and is dried, insulating box is set as 105 DEG C according to relevant criterion, will be to
Rock core is surveyed after drying to constant weight, taking-up, which is placed in drier, to be cooled down, the diameter of the rock core to be measured after measuring Drying and cooling
And length, also the cavity volume of measurement device is demarcated before being measured experiment, in case the measurement of porosity generates
Rock core to be measured is placed in core holding unit by error after having carried out above-mentioned pretreatment work.
Preferably, the cavity volume of measurement device includes the dead volume of core holding unit, the volume of connecting pipe
And the volume of each two-way valve.
The measuring method is simple, accurate, the effecive porosity of rock sample under the conditions of measurement oil-gas reservoir that can be lossless.
Embodiment 1
Fig. 1 shows a kind of measurement dress of shale core effecive porosity of an exemplary embodiment according to the present invention
The structural schematic diagram set.
As shown in Figure 1, the present embodiment proposes a kind of measurement device of shale core effecive porosity, comprising: vacuumize
Unit 1, core holding unit 3, confined pressure unit 5, intermediate receptacle 8, injection unit 9 and control acquisition unit 10；
Wherein, one end of core holding unit 3 is connected with vacuum unit 1, and the other end is connected with intermediate receptacle 8；
Confined pressure unit 5 is connected on core holding unit 3；
The other end of intermediate receptacle 8 is connected with injection unit 9；
Control acquisition unit 10 is connected to injection unit 9, for acquiring the data of injection unit 9.
Further, measurement device further include:
First two-way valve 2, the first two-way valve 2 are set between core holding unit 3 and vacuum unit 1；
Second two-way valve 4, the second two-way valve 4 are set between core holding unit 3 and confined pressure unit 5；
Third two-way valve 6, third two-way valve 6 are set between core holding unit 3 and intermediate receptacle 8, are clamped close to rock core
Device 3；
4th two-way valve 7, the 4th two-way valve 7 are set between core holding unit 3 and intermediate receptacle 8, close to intermediate receptacle
8。
Wherein, injection unit 9 is injection pump.
Quizix injection pump is used in the present embodiment, Quizix injection pump metered volume is accurate, and precision can arrive 0.0001mL.
Acquisition unit 10 is controlled in the present embodiment selects desktop computer.
Intermediate receptacle 8 is provided with fluid, pushes the fluid in intermediate receptacle 8 to enter in rock core to be measured by injection unit 9,
It is saturated rock core to be measured.
In the present embodiment, fluid in intermediate receptacle 8 uses petroleum ether, and petroleum ether is polar substances and volatile, will not
Damage is generated to shale rock sample.
Embodiment 2
Fig. 2 shows a kind of measurement sides of shale core effecive porosity of an exemplary embodiment according to the present invention
The step flow chart of method.
As shown in Fig. 2, the present embodiment proposes a kind of measuring method of shale core effecive porosity, comprising:
Rock core to be measured is placed in core holding unit 3, confining pressure is applied to core holding unit 3, and take out to rock core to be measured true
It is empty；
By injection unit 9 to the liquid pressure rise in intermediate receptacle 8 to experimental pressure, the compressed coefficient of fluid is obtained；
It is gradually repeatedly saturated rock core to be measured, the fluid volume of rock core to be measured is entered by the control record of acquisition unit 10；
The cavity volume of fluid volume, measurement device based on entrance and the fluid of entrance through the volume change of overcompression,
Obtain the porosity of rock core to be measured.
Wherein, being repeatedly gradually saturated rock core to be measured includes:
Under atmospheric conditions, it pushes the fluid in intermediate receptacle 8 to inject rock core to be measured by injection unit 9, makes to be measured
Rock core saturation；
Injection pressure and confining pressure are improved, rock core to be measured is saturated；
It repeats the above steps, when injection pressure reaches strata pressure, and confining pressure reaches burden pressure, record enters rock to be measured
The fluid volume of the heart.
Wherein, rock core to be measured is put into before core holding unit 3, is carried out pretreatment to rock core to be measured and is included:
Rock core to be measured is placed in insulating box and is dried, after drying to constant weight, taking-up is placed in drier cooling；
Measure the diameter and length of rock core to be measured；
Measure the cavity volume of measurement device；
Pretreated rock core to be measured is placed in core holding unit 3.
Wherein, the cavity volume of measurement device includes the dead volume of core holding unit 3, and the volume of connecting pipe and each two are led to
The volume of valve.
Fluid in intermediate receptacle 8 is petroleum ether, and petroleum ether is polar substances and volatile, will not be generated to shale rock sample
Damage.
Specifically, said determination method is applied in practice, mark the cavity volume of measurement device before test
Fixed, the cavity volume of measurement device is 1mL in the present embodiment, wherein the diameter and length of rock core to be measured be respectively 2.5cm and
6cm, then rock core total volume to be measured is 29.45cm3, intermediate receptacle 8 is interior to be full of petroleum ether, intermediate receptacle 8 and Quizix injection pump
It is connected, record injection pump initial value closes the 4th two-way valve 7,8 pressure of intermediate receptacle is gradually increased extremely as a threshold value
Strata pressure records the final numerical value of injection pump after stablizing, then since pressure rise causes petroleum ether volume change to be 1.6mL, so
Afterwards again by intermediate receptacle 8 pressure recovery original sample.
Rock core to be measured is fitted into core holding unit 3,2.5MPa confining pressure is applied by confined pressure unit 5, is then shut off third
Two-way valve 6 opens the first two-way valve 2, by vacuum unit 1 to rock core vacuumizing 48 hours, after vacuumizing, closes the
One two-way valve 2 opens third two-way valve 6 and the 4th two-way valve 7, pushes petroleum ether to enter rock core clamping by Quizix injection pump
Device 3 is saturated rock core to be measured, when injection pump volume no longer changes, is stepped up injection pressure and confining pressure, injection pressure most final rise
To strata pressure 20MPa, confining pressure is then raised to burden pressure 30MPa, pump to be implanted records after stablizing injects pump volume at this time,
Final injection pump volume subtracts initial volume, obtains into the petroleum ether volume of measurement device being 4.42mL, then at 20MPa
The petroleum ether volume for being actually implanted into rock sample is that 4.42mL subtracts 1.6mL, then subtracts cavity volume 1mL, is 1.82mL, then calculate
To rock sample effecive porosity 6.17%.
By the measuring method can be lossless measurement oil-gas reservoir under the conditions of rock sample effecive porosity.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (10)
1. a kind of measurement device of shale core effecive porosity, which is characterized in that the measurement device includes: to vacuumize list
Member, core holding unit, confined pressure unit, intermediate receptacle, injection unit and control acquisition unit；
Wherein, one end of the core holding unit is connected with vacuum unit, and the other end is connected with intermediate receptacle；
The confined pressure unit is connected on the core holding unit；
The other end of the intermediate receptacle is connected with injection unit；
The control acquisition unit is connected to the injection unit, for acquiring the data of the injection unit.
2. the measurement device of shale core effecive porosity according to claim 1, wherein the measurement device is also wrapped
It includes:
First two-way valve, first two-way valve are set between the core holding unit and the vacuum unit；
Second two-way valve, second two-way valve are set between the core holding unit and the confined pressure unit；
Third two-way valve, the third two-way valve are set between the core holding unit and the intermediate receptacle, close to described
Core holding unit；
4th two-way valve, the 4th two-way valve are set between the core holding unit and the intermediate receptacle, close to described
Intermediate receptacle.
3. the measurement device of shale core effecive porosity according to claim 1, wherein the injection unit is injection
Pump.
4. the measurement device of shale core effecive porosity according to claim 3, wherein the precision of the injection pump is not
Lower than 0.005mL.
5. the measurement device of shale core effecive porosity according to claim 1, wherein the control acquisition unit is
Desktop computer, laptop or tablet computer.
6. a kind of measuring method of shale core effecive porosity, utilizes shale rock described in any one of claim 1-5
The measurement device of heart effecive porosity, comprising:
Rock core to be measured is placed in core holding unit, confining pressure is applied to the core holding unit, and take out to the rock core to be measured
Vacuum；
By injection unit to the liquid pressure rise in intermediate receptacle to experimental pressure, the compressed coefficient of the fluid is obtained；
It is gradually repeatedly saturated the rock core to be measured, the fluid body of the rock core to be measured is entered by control acquisition unit record
Product；
The cavity volume of the fluid volume, the measurement device based on entrance and the fluid of entrance are through the body of overcompression
Product variation, obtains the porosity of the rock core to be measured.
7. the measuring method of shale core effecive porosity according to claim 6, wherein repeatedly gradually saturation it is described to
Surveying rock core includes:
Under atmospheric conditions, the fluid in the intermediate receptacle is pushed to inject the rock core to be measured by the injection unit,
Make the rock core saturation to be measured；
Injection pressure and the confining pressure are improved, the rock core saturation to be measured is made；
It repeats the above steps, when the injection pressure reaches strata pressure, and the confining pressure reaches burden pressure, record enters institute
State the fluid volume of rock core to be measured.
8. the measuring method of shale core effecive porosity according to claim 6, wherein the rock core to be measured is put into institute
Before stating core holding unit, the rock core to be measured is pre-processed.
9. the measuring method of shale core effecive porosity according to claim 8, wherein carried out to the rock core to be measured
Pretreatment includes:
The rock core to be measured is placed in insulating box and is dried, after drying to constant weight, taking-up is placed in drier cooling；
Measure the diameter and length of the rock core to be measured；
Measure the cavity volume of the measurement device；
The pretreated rock core to be measured is placed in the core holding unit.
10. the measuring method of shale core effecive porosity according to claim 9, wherein the sky of the measurement device
Cavity volume includes the dead volume of the core holding unit, the volume of the volume of connecting pipe and each two-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266708.XA CN110320136B (en) | 2018-03-28 | 2018-03-28 | Device and method for measuring effective porosity of shale core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266708.XA CN110320136B (en) | 2018-03-28 | 2018-03-28 | Device and method for measuring effective porosity of shale core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110320136A true CN110320136A (en) | 2019-10-11 |
| CN110320136B CN110320136B (en) | 2022-08-05 |
Family
ID=68110181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810266708.XA Active CN110320136B (en) | 2018-03-28 | 2018-03-28 | Device and method for measuring effective porosity of shale core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110320136B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873688A (en) * | 2019-11-28 | 2020-03-10 | 中国科学院地质与地球物理研究所 | Method and system for measuring pore structure of tight sandstone |
| CN111366524A (en) * | 2020-04-29 | 2020-07-03 | 兰州理工大学 | Porosity measuring device and method for porous medium |
| CN113567315A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Reservoir rock compression coefficient determination experimental system and method for multiple injection and production processes of gas storage |
| CN113945502A (en) * | 2021-10-22 | 2022-01-18 | 蜂巢能源科技有限公司 | Porosity testing tool and testing method thereof |
| CN114076716A (en) * | 2020-08-20 | 2022-02-22 | 中国石油天然气股份有限公司 | Rock pore volume compression coefficient measuring device and measuring system |
| CN114199737A (en) * | 2020-09-17 | 2022-03-18 | 中国石油化工股份有限公司 | Device and method for measuring effective porosity |
| CN114935512A (en) * | 2022-05-24 | 2022-08-23 | 中国海洋石油集团有限公司 | Ultrahigh-temperature and high-pressure device and method for jointly measuring rock sample resistivity and capillary pressure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211252A1 (en) * | 2003-03-26 | 2004-10-28 | Roland Lenormand | Method and device for evaluating physical parameters of an underground reservoir from rock cuttings taken therefrom |
| CN102353625A (en) * | 2011-08-31 | 2012-02-15 | 中国石油大学(北京) | Method for measuring overburden porosity with water in permeation fluid mechanics experiment |
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Rock core permeability experimental test method and device under formation pressure condition |
| CN204903351U (en) * | 2015-09-06 | 2015-12-23 | 西南石油大学 | Three -dimensional rock specimen hole measuring device of jumbo size |
| CN205301131U (en) * | 2015-12-08 | 2016-06-08 | 中国石油天然气股份有限公司 | Core permeability evolution simulation system |
-
2018
- 2018-03-28 CN CN201810266708.XA patent/CN110320136B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211252A1 (en) * | 2003-03-26 | 2004-10-28 | Roland Lenormand | Method and device for evaluating physical parameters of an underground reservoir from rock cuttings taken therefrom |
| CN102353625A (en) * | 2011-08-31 | 2012-02-15 | 中国石油大学(北京) | Method for measuring overburden porosity with water in permeation fluid mechanics experiment |
| CN102507414A (en) * | 2011-11-22 | 2012-06-20 | 中国石油天然气股份有限公司 | Rock core permeability experimental test method and device under formation pressure condition |
| CN204903351U (en) * | 2015-09-06 | 2015-12-23 | 西南石油大学 | Three -dimensional rock specimen hole measuring device of jumbo size |
| CN205301131U (en) * | 2015-12-08 | 2016-06-08 | 中国石油天然气股份有限公司 | Core permeability evolution simulation system |
Non-Patent Citations (2)
| Title |
|---|
| 杨泽皓等: "测量页岩径向渗透率和孔隙度的新方法", 《石油学报》 * |
| 黄福堂等: "温压下岩石孔隙度、渗透率参数测定仪研制及实验研究", 《大庆石油地质与开发》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873688A (en) * | 2019-11-28 | 2020-03-10 | 中国科学院地质与地球物理研究所 | Method and system for measuring pore structure of tight sandstone |
| CN113567315A (en) * | 2020-04-28 | 2021-10-29 | 中国石油化工股份有限公司 | Reservoir rock compression coefficient determination experimental system and method for multiple injection and production processes of gas storage |
| CN113567315B (en) * | 2020-04-28 | 2024-05-31 | 中国石油化工股份有限公司 | Reservoir rock compression coefficient measurement experiment system and experiment method for multi-round injection and production process of gas storage |
| CN111366524A (en) * | 2020-04-29 | 2020-07-03 | 兰州理工大学 | Porosity measuring device and method for porous medium |
| CN114076716A (en) * | 2020-08-20 | 2022-02-22 | 中国石油天然气股份有限公司 | Rock pore volume compression coefficient measuring device and measuring system |
| CN114076716B (en) * | 2020-08-20 | 2024-08-27 | 中国石油天然气股份有限公司 | Rock pore volume compression coefficient measuring device and measuring system |
| CN114199737A (en) * | 2020-09-17 | 2022-03-18 | 中国石油化工股份有限公司 | Device and method for measuring effective porosity |
| CN113945502A (en) * | 2021-10-22 | 2022-01-18 | 蜂巢能源科技有限公司 | Porosity testing tool and testing method thereof |
| CN113945502B (en) * | 2021-10-22 | 2023-09-26 | 蜂巢能源科技有限公司 | Porosity testing tool and testing method thereof |
| CN114935512A (en) * | 2022-05-24 | 2022-08-23 | 中国海洋石油集团有限公司 | Ultrahigh-temperature and high-pressure device and method for jointly measuring rock sample resistivity and capillary pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110320136B (en) | 2022-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110320136A (en) | The measurement device and measuring method of shale core effecive porosity | |
| US11378509B2 (en) | Evaluation method for hydrogen-bearing components, porosity and pore size distribution of organic-rich shale | |
| CN105866002B (en) | A kind of accurate dice NMR porosity test method | |
| CN102353625B (en) | Method for measuring overburden porosity with water in permeation fluid mechanics experiment | |
| CN104374683B (en) | Core pore compression coefficient testing device and testing method thereof | |
| US20240027379A1 (en) | Method for quantitative evaluation on sensitivity of shale oil and gas reservoir to injected fluids | |
| KR101475831B1 (en) | Apparatus and method for measuring porosity of core sample from reservoir rock | |
| CN106383221B (en) | A kind of reservoir stress sensitive experiment test method and device | |
| CN110296921A (en) | The test device and test method of steady state method shale gas permeability under reservoir conditions | |
| CN201242522Y (en) | Measuring device suitable for hypotonic extra-hypotonic rock core porosity | |
| RU2697421C1 (en) | Integrated gas-proof measuring device for gas content measurement | |
| CN112378943B (en) | Shale oil saturation evaluation model, evaluation method and application | |
| CN112505084B (en) | Evaluation model, evaluation method and application for improving shale oil mobility through gas injection | |
| CN112213345A (en) | Nuclear magnetic resonance system and method for simulating high-temperature and high-pressure conditions | |
| CN110261280A (en) | A kind of reverse imbibition on-line monitoring experimental provision of high temperature and pressure rock core and experimental method | |
| US10156507B2 (en) | Determination of free volume of a rock sample using high pressure adsorption data | |
| WO2011133885A1 (en) | Total storage capacity and total porosity of porous media | |
| CN106198344B (en) | Rock diffusion coefficient measuring device and method based on micro-differential pressure automatic injection | |
| CN103335928A (en) | Method and apparatus for measuring permeability of porous rock | |
| CN108732061B (en) | Method for identifying desorbed gas and free gas in shale gas output gas | |
| CN106525637A (en) | Shale gas-content testing device and testing method | |
| CN107237626B (en) | Method for determining volume of karst cave encountered by well drilling | |
| CN108268712B (en) | Method and device for determining capillary pressure of pore medium by nuclear magnetic resonance | |
| CN113092337B (en) | Method for establishing initial water saturation of compact rock core under in-situ condition | |
| CN208433157U (en) | A kind of shale gas reservoir exploitation novel analog experimental provision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |