CN110320138A - Measure the device and method of saturated with fluid pressure and percolation ability in porous media - Google Patents
Measure the device and method of saturated with fluid pressure and percolation ability in porous media Download PDFInfo
- Publication number
- CN110320138A CN110320138A CN201810279364.6A CN201810279364A CN110320138A CN 110320138 A CN110320138 A CN 110320138A CN 201810279364 A CN201810279364 A CN 201810279364A CN 110320138 A CN110320138 A CN 110320138A
- Authority
- CN
- China
- Prior art keywords
- pressure
- interface
- prepare liquid
- porous media
- chamber
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 88
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 36
- 238000005325 percolation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 115
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 47
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 8
- 230000035699 permeability Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 23
- 239000012071 phase Substances 0.000 description 18
- 239000003921 oil Substances 0.000 description 17
- 238000011161 development Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 241001515806 Stictis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting 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
- G01N15/082—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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides the device and methods of saturated with fluid pressure and percolation ability in a kind of measurement porous media, which includes: high temperature and pressure core holding unit, type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference acquisition device；Wherein, volume adjustment means include chamber and piston, and piston side is effective chamber, and piston can adjust the volume of effective chamber in chamber indoor moving；Wherein, prepare liquid flows into type bidirectional piston pump via effective chamber, and type bidirectional piston pump makes prepare liquid flow through the core sample in high temperature and pressure core holding unit；Pressure acquisition device is for acquiring real-time pressure suffered by prepare liquid, and the pressure acquisition end of pressure difference acquisition device is set to the two sides of high temperature and pressure core holding unit, for detecting the pressure difference before and after prepare liquid flows through core sample.The device can accurately measure saturated with fluid pressure and percolation ability in porous media.
Description
Technical field
The invention belongs to petroleum natural gas exploration fields, more particularly, to fluid in a kind of measurement porous media
The device and method of saturation pressure and percolation ability.
Background technique
In Reservoir Development field, saturated with fluid pressure refers under formation condition, starts gas from liquid when pressure drops to
Pressure when being separated in phase.For oil reservoir, saturation pressure is commonly referred to as bubble point pressure, for gas condensate reservoir, saturation
Pressure is commonly referred to as dew-point pressure.Saturation pressure is the changed turning point of physical properties of fluids, before and after saturation pressure, fluid
Significant change can all occur for gas-oil ratio, volume factor, the compressed coefficient, viscosity etc., to influence stream of the fluid in porous media
Kinetic force.In addition the separation of saturation pressure or single-phase flow or Multiphase Flow, does not consider the flowing of water, is lower than saturation pressure
Power can become oil gas two phase fluid flow from oil or gas single-phase flow, increase filtrational resistance, so the determination of saturation pressure is oil-gas reservoir
The important measurement content of fluid phase state experiment.In general, the saturation pressure measurement of oil-gas reservoir hydrocarbon fluid is not porous mostly
It is obtained in the PVT cylinder of medium or by PV relationship experiments, it is believed that influence of the porous media to phase is negligible.
But it is said on stricti jurise, flow event occurs in underground porous medium, can interact between fluid and reservoir medium.Institute
Think that the presence of porous media is certain to have an impact the phase of porous media with some scholars' research.Terbni and
The result of study of Zadorasl shows in the presence of having porous media, and the dew-point pressure of condensate gas is than the dew that measures in PVT conventional
The high l%-15% of point pressure；Find have more when Tindy and Ryanal saturation pressure of the experimental study crude oil in porous media
The saturation pressure of crude oil high a few percent when hole medium is than no medium.Strictly, CONDENSATE OIL AND GAS system balances each other process and infiltration
Stream process occurs in underground porous medium, and fluid is asked with reservoir medium and can be interacted.Since reservoir particle is thin, hole
It is small, make reservoir medium that there is huge specific area, there are a variety of interfaces between fluid and reservoir medium, interfacial phenomenon is extremely prominent.
And then the effects of interfacial tension, absorption, wetting, capillary pressure, can be to distribution of the fluid in reservoir pore space medium, seepage flow
It has an immense impact on.So the saturation pressure of fluid and the shadow since phase-state change fluid flow occurs in measurement porous media
Sound is of great significance for Reservoir Development.
There is scholar to study the measuring method of saturation pressure of the fluid in porous media and phase Characteristics at present.
There is researcher to use in laboratory and fills micro- glass marble, quartz sand and quartz sand in PVT conventional and clay, kaolinite mix
With the methods of porous media, primary study influence of the porous media to the initial condensation pressure of hydrocarbon fluid, retrograde condensation oil mass with
And gaseous state list hydrocarbon absorption the problems such as.But disadvantage of this method is that qualitatively conclusion is more, the result of quantification is few, and reason exists
It is inadequate in the accuracy measured to key parameters such as saturation pressures.The new method tested for CONDENSATE OIL AND GAS fluid phase state in medium
Research it is very active with application, specifically include that microwave technology, nuclear magnetic resonance technique, gamma ray technology, ultrasonic test skill
Art and various other CT technologies etc..But these methods all exist, and resolution ratio is low, measuring accuracy is poor, and instrument and equipment is expensive, and operation is multiple
The deficiencies of miscellaneous, so not being widely applied.
In terms of development trend, the further developing direction in relation to fluid phase state properties study in porous media is to make to study item
Part is closer to oil-gas reservoir formation condition, with can be preferably for oil-gas reservoir Engineering Service, while seeking new Germicidal efficacy
Means get up porous media and phase-state change (saturation pressure) and fluid flow combinations.
It can be rapidly to reservoir fluids such as petroleum gases in porous medias such as rocks therefore, it is necessary to research and develop one kind
In the phases behavioral parameters such as saturation pressure be measured, and evaluate the measurement of percolation ability of the fluid in porous media simultaneously
The device and method of saturated with fluid pressure and percolation ability in porous media.
Summary of the invention
The object of the present invention is to provide the devices and side of saturated with fluid pressure and percolation ability in a kind of measurement porous media
Method, the device of saturated with fluid pressure and percolation ability can be rapidly to oil-gas reservoirs such as petroleum gases in the measurement porous media
The phases behavioral parameters such as saturation pressure of the fluid in the porous medias such as rock are measured, and evaluate fluid simultaneously in porous Jie
Percolation ability in matter.Can in precise measurement porous media fluid saturation pressure, and evaluate there is saturation pressure before and after stream
Body percolation ability, meets the requirement of Reservoir Development experiment, and solution cannot consider porous currently with PVT measurement saturation pressures
Medium influence, other measuring method accuracys be low and the expensive problem complicated for operation of equipment, to provide rapidly for producing scientific research
Reliable experimental data, the present apparatus is small in size, easy to operate, can be quickly obtained accurate result, and obtains fluid infiltration simultaneously
Flow merit rating result.
To achieve the goals above, saturated with fluid pressure in a kind of measurement porous media is provided according to an aspect of the present invention
The device of power and percolation ability, the device of saturated with fluid pressure and percolation ability includes: in the measurement porous media
High temperature and pressure core holding unit, type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference acquisition dress
It sets；
Wherein, the volume adjustment means include chamber and piston, and the piston side is effective chamber, the piston energy
Enough in the chamber indoor moving, the volume of effective chamber is adjusted；
Wherein, prepare liquid flows into type bidirectional piston pump via effective chamber, and type bidirectional piston pump makes prepare liquid flow through high temperature and pressure
Core sample in core holding unit；
The pressure acquisition device for acquiring real-time pressure suffered by prepare liquid, adopt by the pressure of the pressure difference acquisition device
Collection end is set to the two sides of the high temperature and pressure core holding unit, for detecting the pressure before and after prepare liquid flows through core sample
Difference.
Preferably, further include confining pressure system, the confining pressure system is connected to the high temperature and pressure core holding unit, for for
Core sample pressure in the high temperature and pressure core holding unit.
Preferably, the type bidirectional piston pump includes shell, pumping piston, servo motor and screw rod, and the screw rod setting exists
In the shell, the shell is divided into upper chamber and lower chambers, the pumping piston is arranged on the screw rod, the servo
Motor can drive the piston to move on the screw rod, and the both ends of the high temperature and pressure core holding unit are managed by upper chamber
Road is connected to the upper chamber two sides.
Preferably, further include lower chambers pipeline, the lower chambers pipeline is connected to the lower chambers two sides, prepare liquid via
The lower chambers pipeline flows into the type bidirectional piston pump.
Preferably, the pressure acquisition device is arranged on the lower chambers pipeline.
Preferably, further include prepare liquid circulating line, the prepare liquid circulating line be connected to upper chamber's pipeline and
The lower chambers pipeline.
Preferably, further include automatic reverse valve group, automatic reverse valve group setting the prepare liquid circulating line with
The junction of upper chamber's pipeline.
Preferably, the automatic reverse valve group includes the first automatic reverse valve group and the second automatic reverse valve group；
Wherein, the first automatic reverse valve group and the second automatic diverter valve group are respectively arranged at the type bidirectional piston pump two
Side；
Wherein, the first automatic reverse valve group includes: V1 interface, V2 interface, V3 interface, V4 interface, the V1 interface
And the V2 interface is respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, the V3 interface and the V4 interface are set
It sets on the prepare liquid circulating line；
Wherein, the second automatic reverse valve group includes: V5 interface, V6 interface, V7 interface, V8 interface, the V5 interface
And the V6 interface is respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, the V7 interface and the V8 interface are set
It sets on the prepare liquid circulating line.
Saturated with fluid pressure and percolation ability in a kind of measurement porous media are provided according to another aspect of the present invention
Method, this method comprises: clamping core sample to be measured by high temperature and pressure core holding unit；
Device is vacuumized, then adjusts unit temp to experimental temperature；
Prepare liquid is injected into device via volume adjustment means；
It is mobile to control piston, prepare liquid is made to flow through core sample two sides to be measured, obtains prepare liquid pressure, prepare liquid at this time
Flow through the volume of pressure difference before and after core sample to be measured, flow velocity to be measured and effective chamber；
Pressure difference, flow velocity to be measured and the effective chamber before and after core sample to be measured are flowed through based on prepare liquid pressure, prepare liquid
The volume and darcy of room, which quantitatively calculate, obtains fluid permeability；
Change the volume of effective chamber of volume adjustment means, and then adjust prepare liquid pressure, obtains prepare liquid institute
Core sample front and back to be measured pressure difference is flowed through by the relation curve and prepare liquid pressure and prepare liquid of pressure and effect chamber volume
Relation curve；
Pressure when inflection point occurs in the relation curve saturated with fluid pressure in porous media as testing liquid.
Preferably, described that prepare liquid is injected into device via volume adjustment means；It is mobile to control piston, makes liquid stream to be measured
Include: through core sample two sides to be measured
Prepare liquid flows into the lower chambers of type bidirectional piston pump via effective chamber and lower chambers pipeline；
Prepare liquid circulating line is flowed into via lower chambers pipeline；
Then upper chamber's pipeline is flowed into via the first automatic reverse valve group and the first automatic reverse valve group；
V3 interface, V4 interface, V7 interface, V8 interface are closed, V1 interface, V2 interface, V5 interface, V6 interface, control are opened
Pumping piston is mobile, and prepare liquid is made to flow through core sample to be measured two sides via upper chamber's pipeline；
When pumping piston is moved to shell side, V3 interface, V4 interface, V7 interface, V8 interface are opened, V1 is closed and connects
Pumping piston movement is reset to the shell other side by mouth, V2 interface, V5 interface, V6 interface.
The beneficial effects of the present invention are: it is adopted by type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference
The setting of acquisition means combines the measurement of saturated with fluid pressure in porous media with fluid neuron network merit rating, in oil gas
It is tested during hiding temperature, pressure condition and analog development.Property mutation occurs in critical condition using fluid, carries out
The measurement of saturation pressure.Under isothermal conditions, system volume increases, pressure reduction, when pressure drops to saturation pressure, liquid phase
In occur occurring drop in gas phase or gas phase, the viscosity of fluid can mutate at this time, additionally due to there is the second phase,
Additional drag can be generated in porous media, the pressure difference at rock core both ends can change at this time.By the volume of regulation system, make
Consecutive variations occur for system bulk, measure corresponding pressure, and measure the pressure difference at rock core both ends simultaneously, pressure difference is dashed forward when both ends
When change, pressure at this time is the saturation pressure of fluid in porous media, by recording flow and pressure difference at this time, can be calculated
Its percolation ability.This experimental provision and method equipment are succinct, easy to operate, being capable of simulation oil reservoir temperature pressure condition and exploitation
Process, and using oil reservoir true core sample and fluid sample, it can satisfy the related needs of oil-gas reservoir engineering.
Other features and advantages of the present invention will then part of the detailed description can be specified.
Detailed description of the invention
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 shows saturated with fluid pressure and percolation ability in measurement porous media according to an embodiment of the invention
Device schematic diagram.
Description of symbols
1, high temperature and pressure core holding unit；2, type bidirectional piston pump；3, volume adjustment means；4, confining pressure system；5, pressure difference is adopted
Acquisition means；6, pressure acquisition device；7, threeway；8, hand-operated valve.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.Phase
Instead, these embodiments are provided so that the present invention is more thorough and complete, and can be by the scope of the present invention completely
It is communicated to those skilled in the art.
Embodiment 1
A kind of dress for measuring saturated with fluid pressure and percolation ability in porous media is provided according to an aspect of the present invention
It sets, which includes:
High temperature and pressure core holding unit, type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference acquisition dress
It sets；
Wherein, volume adjustment means include chamber and piston, and piston side is effective chamber, and piston can move in chamber
It is dynamic, adjust the volume of effective chamber；
Wherein, prepare liquid flows into type bidirectional piston pump via effective chamber, and type bidirectional piston pump makes prepare liquid flow through high temperature and pressure
Core sample in core holding unit；
Pressure acquisition device is for acquiring real-time pressure suffered by prepare liquid, the pressure acquisition end setting of pressure difference acquisition device
In the two sides of high temperature and pressure core holding unit, for detecting the pressure difference before and after prepare liquid flows through core sample.
The device of saturated with fluid pressure and percolation ability, is pressed from both sides by high temperature and pressure core holding unit in the measurement porous media
Hold core sample to be measured；Prepare liquid via after effective chamber of volume adjustment means enter type bidirectional piston pump, type bidirectional piston pump make to
Liquid stream is surveyed through core sample two sides to be measured, pressure acquisition device obtains real-time pressure suffered by prepare liquid, and pressure difference acquisition device obtains
The pressure difference at both ends when prepare liquid flows through core sample to be measured then changes the volume of effective chamber of volume adjustment means and then adjusts
Real-time pressure suffered by prepare liquid is saved, prepare liquid pressure is obtained and is pressurized with the relation curve and prepare liquid for imitating chamber volume
Power and prepare liquid flow through the relation curve of pressure difference before and after core sample to be measured；Pressure when inflection point occurs in relation curve is as to be measured
Liquid saturated with fluid pressure in porous media.
By the volume of volume adjustment means, makes device volume that consecutive variations occur, measure corresponding pressure, and survey simultaneously
The pressure difference for determining rock core both ends, when both ends, pressure difference is mutated, pressure at this time is the saturation pressure of fluid in porous media,
By recording flow and pressure difference at this time, its percolation ability can be calculated.This experimental provision and method equipment are succinct, operation letter
It is single, can simulation oil reservoir temperature pressure condition and development process, and using oil reservoir true core sample and fluid sample, energy
Enough meet the related needs of oil-gas reservoir engineering.
The following detailed description of the device of saturated with fluid pressure and percolation ability in measurement porous media according to the present invention
Specific structure.
It in one example, further include confining pressure system, confining pressure system is connected to high temperature and pressure core holding unit, for being high
Core sample pressure in warm high pressure core holding unit.Confining pressure system is used to apply confining pressure to porous media sample, guarantees fluid
Pass through sample.
In one example, type bidirectional piston pump includes shell, pumping piston, servo motor and screw rod, and screw rod is arranged in shell
In vivo, shell is divided into upper chamber and lower chambers, pumping piston is arranged on screw rod, and servo motor can drive piston in screw rod
The both ends of upper movement, high temperature and pressure core holding unit are connected to upper chamber two sides by upper chamber's pipeline.
It is highly preferred that type bidirectional piston pump further includes volume indicating arm and a displacement sensor, volume indicating arm is set to pumping
Piston one end, displacement sensor are arranged on volume indicating arm.
Specifically, type bidirectional piston pump is moved forward or back by Serve Motor Control piston according to the speed of setting, servo electricity
Machine is connect by lead screw or screw rod with the pumping piston in the pump housing, and the position of piston is determined by displacement sensor, passes through servo
The rotational speed regulation speed of motor；Another terminal body product indicating arm of piston, volume indicating arm band volume markings or displacement sensor.Silk
Thick stick, screw rod and volume instruction shank diameter are identical, are realized by dynamic sealing and are sealed with the pump housing.Displacement sensor acquires piston position number
According to, and pass through the direction of motion of acquisition and control system control servo motor.By adjust pumping piston movement velocity and
The direction of motion and then pumping guarantee that prepare liquid injects rock core under the pressure of setting in the same direction at different rates.
It in one example, further include lower chambers pipeline, lower chambers pipeline is connected to lower chambers two sides, and prepare liquid is under
Chamber tube flows into type bidirectional piston pump.
In one example, pressure acquisition device is arranged on lower chambers pipeline.
In one example, further include prepare liquid circulating line, prepare liquid circulating line be connected to upper chamber's pipeline and under
Chamber tube.
In one example, further include automatic reverse valve group, the setting of automatic reverse valve group prepare liquid circulating line with it is upper
The junction of chamber tube.
Specifically, by injecting prepare liquid to volume adjustment means, prepare liquid flows into epicoele via prepare liquid circulating line
Room pipeline is in lower chambers pipeline.
Specifically, by the setting of type bidirectional piston pump, pumping piston can be moved left and right.Close prepare liquid circulating line with
Lower chambers pipeline, pumping piston can make prepare liquid in upper chamber's pipeline flow through core sample to movement on the left of shell；When pumping is lived
When plug is moved on the left of shell, upper chamber's pipeline is closed, pumping piston moves to the right；When pumping piston moves on the right side of shell
Afterwards, control pumping piston is mobile to shell left side again, it can be ensured that be measured that core sample to be measured is flowed through on single direction initialization.
In one example, automatic reverse valve group includes the first automatic reverse valve group and the second automatic reverse valve group；
Wherein, the first automatic reverse valve group and the second automatic diverter valve group are respectively arranged at type bidirectional piston pump two sides；
Wherein, the first automatic reverse valve group includes: V1 interface, V2 interface, V3 interface, V4 interface, V1 interface and V2 interface
It is respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, V3 interface and V4 interface are arranged in prepare liquid circulating line
On；
Wherein, the second automatic reverse valve group includes: V5 interface, V6 interface, V7 interface, V8 interface, V5 interface and V6 interface
It is respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, V7 interface and V8 interface are arranged in prepare liquid circulating line
On.
Specifically, specifically, type bidirectional piston pump pumping cylinder effective volume is less than 10ml, by the two-way work for replacing different-thickness
Plug, to obtain different bidirectional piston pumping cylinder effective volumes.Type bidirectional piston pump and automatic diverter valve change simultaneously direction, both guarantee
Fluid is constant by the flow direction of rock core, also guarantees that no pressure pulse generates.
It is highly preferred that further including heating and temperature control device, heating and temperature control device are connected to high temperature and pressure core holding unit,
For guaranteeing that system is in the temperature condition of setting.
It is highly preferred that further include data acquisition and processing module is communicatively coupled to high temperature and pressure core holding unit, pressure is adopted
Acquisition means and pressure difference acquisition device, for acquiring and the speed data of recording device, pressure data, pressure difference data, temperature data
And volume data.
The volume of porous sample pore volume to be measured, bidirectional circulating pump and pipeline is all definite value in the present invention, only body
The volume of product regulating device can be accurately adjusted and measure.System can be realized by adjusting piston in volume adjustment means
The variation of volume in system.Core sample to be measured and fluid to be measured sample are transferred to system under conditions of above bubble point pressure, led to
Different volume and pressure data can be obtained by crossing adjusting body product regulating device, record the pressure difference at rock core both ends.When volume gradually
Become larger, the pressure in system constantly becomes smaller, and records pressure, volume and pressure difference data at this time, when there is saturation pressure, P-V
There is inflection point in relation curve, and the pressure difference at rock core both ends is mutated, and pressure at this time is saturation pressure, can according to Darcy formula
Permeability at this time is calculated simultaneously.
Embodiment 2
Saturated with fluid pressure and percolation ability in a kind of measurement porous media are provided according to another aspect of the present invention
The measurement method of device, this method comprises:
Core sample to be measured is clamped by high temperature and pressure core holding unit；
Device is vacuumized, then adjusts unit temp to experimental temperature；
Prepare liquid is injected into device via volume adjustment means；
It is mobile to control piston, prepare liquid is made to flow through core sample two sides to be measured, obtains prepare liquid pressure, prepare liquid at this time
Flow through the volume of pressure difference before and after core sample to be measured, flow velocity to be measured and effective chamber；
Pressure difference, flow velocity to be measured and the effective chamber before and after core sample to be measured are flowed through based on prepare liquid pressure, prepare liquid
The volume and darcy of room, which quantitatively calculate, obtains fluid permeability；
Change the volume of effective chamber of volume adjustment means, and then adjust prepare liquid pressure, obtains prepare liquid institute
Core sample front and back to be measured pressure difference is flowed through by the relation curve and prepare liquid pressure and prepare liquid of pressure and effect chamber volume
Relation curve；
Pressure when inflection point occurs in the relation curve saturated with fluid pressure in porous media as testing liquid.
This method combines the measurement of saturated with fluid pressure in porous media with fluid neuron network merit rating, in oil gas
It is tested during hiding temperature, pressure condition and analog development.Cardinal principle is to utilize fluid fluid phase state in porous media
When changing physical properties of fluids mutation (such as viscosity of fluid) cause fluid flow resistance to change, carry out saturation pressure
Measurement.It can the rapidly phases row such as saturation pressure to reservoir fluids such as petroleum gases in the porous medias such as rock
It is measured for parameter, and evaluates percolation ability of the fluid in porous media simultaneously.Main application field is that petroleum is natural
Gas exploration development field.This experimental provision and method equipment are succinct, easy to operate, can simulation oil reservoir temperature pressure condition and
Development process, and using oil reservoir true core sample and fluid sample, it can satisfy the related needs of oil-gas reservoir engineering.
The following detailed description of the device of saturated with fluid pressure and percolation ability in measurement porous media according to the present invention
The specific steps of measurement method.
Prepare liquid flows into the lower chambers of type bidirectional piston pump via effective chamber and lower chambers pipeline；
Prepare liquid circulating line is flowed into via lower chambers pipeline；
Then upper chamber's pipeline is flowed into via the first automatic reverse valve group and the first automatic reverse valve group；
V3 interface, V4 interface, V7 interface, V8 interface are closed, V1 interface, V2 interface, V5 interface, V6 interface, control are opened
Pumping piston is mobile, and prepare liquid is made to flow through core sample to be measured two sides via upper chamber's pipeline；
When pumping piston is moved to shell side, V3 interface, V4 interface, V7 interface, V8 interface are opened, V1 is closed and connects
Pumping piston movement is reset to the shell other side by mouth, V2 interface, V5 interface, V6 interface.
This method is easy to operate, can simulation oil reservoir temperature pressure condition and development process, and it is true using oil reservoir
Core sample and fluid sample can satisfy the related needs of oil-gas reservoir engineering.
Embodiment 1
In the measurement porous media device of saturated with fluid pressure and percolation ability include: high temperature and pressure core holding unit,
Type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference acquisition device；
Wherein, volume adjustment means include chamber and piston, and piston side is effective chamber, and piston can move in chamber
It is dynamic, adjust the volume of effective chamber；
Wherein, prepare liquid flows into type bidirectional piston pump via effective chamber, and type bidirectional piston pump makes prepare liquid flow through high temperature and pressure
Core sample in core holding unit；
Pressure acquisition device is for acquiring real-time pressure suffered by prepare liquid, the pressure acquisition end setting of pressure difference acquisition device
In the two sides of high temperature and pressure core holding unit, for detecting the pressure difference before and after prepare liquid flows through core sample.
In use, clamping core sample to be measured by high temperature and pressure core holding unit；Device is vacuumized, it then will dress
Temperature is set to adjust to experimental temperature；Prepare liquid is injected into device via volume adjustment means；It is mobile to control piston, makes prepare liquid
It flows through core sample two sides to be measured, obtains pressure difference before and after prepare liquid pressure, prepare liquid at this time flow through core sample to be measured, to be measured
The volume of flow velocity and effective chamber；Pressure difference before and after core sample to be measured, to be measured is flowed through based on prepare liquid pressure, prepare liquid
The volume and darcy of flow velocity and effective chamber, which quantitatively calculate, obtains fluid permeability；Change effective chamber of volume adjustment means
Volume, and then adjust prepare liquid pressure, obtain prepare liquid pressure and the effect relation curve of chamber volume and to be measured
Liquid pressure and prepare liquid flow through the relation curve of pressure difference before and after core sample to be measured；Pressure when inflection point occurs in relation curve
As testing liquid in porous media saturated with fluid pressure.
Embodiment 2
Fig. 1 shows saturated with fluid pressure and percolation ability in measurement porous media according to an embodiment of the invention
Device schematic diagram.
As shown in Figure 1, the device of saturated with fluid pressure and percolation ability includes: in the measurement porous media
High temperature and pressure core holding unit 1, type bidirectional piston pump 2, volume adjustment means 3, confining pressure system 4, pressure difference acquisition device
5, pressure acquisition device 6, threeway 7, hand-operated valve 8.
Process each section is assembled, the core sample standard core block for having demarcated volume in core holding unit
Instead of test sample, confining pressure is applied by confining pressure system 4, the piston of volume adjustment system is moved to left end, is allowed to volume
In minimum.
Standard core block is replaced with core sample to be measured, the porosity and permeability of core sample to be measured can pass through experiment
Measure acquisition.
All valves are in the open state, vacuumized by 8 carry out system of valve.Valve 8 is closed after the completion of vacuum.To be
System is warming up to experimental temperature, valve 8 is connect with liquid supply system to be measured, the air in discharge pipe, and pressure is risen to reality
Pressure is tested, carrying out stable guarantee sample transfer system does not have pressure or flow velocity fluctuation.
Valve 8 is opened, prepare liquid flows into lower chambers pipeline via threeway 7, flows into prepare liquid circulation via lower chambers pipeline
Pipeline and upper chamber's pipeline, it is ensured that prepare liquid sample is transferred to experiment flow in experimental pressure or higher than experimental pressure under the conditions of, when
After sample transfer pressure and system pressure balance, stablize 0.5 hour or more.Close valve 8.
Automatic valve is opened, is closed, bidirectional piston pump speed v0 is set, starting carries out cyclic balance, works as type bidirectional piston pump
When moving to pumping cylinder one end, automatic reverse valve group, which synchronizes, to be switched over, and V3, V4, V7, V8, V9 are opened, and V1, V2, V6, V5 are closed,
Until the pressure and pressure difference data of pressure difference acquisition device 5 and the display of pressure acquisition device 6 are stablized, fluid is in equilibrium-like at this time
State records pressure P1, pressure difference △ P1, flow velocity Q1, volume VOL1 at this time, can use the fluid that darcy quantitatively calculates at this time and seeps
Saturating rate K1.
Volume adjustment means are adjusted, its pumping cylinder is made to move right, increase system bulk by △ V1, system bulk increases at this time
Add, pressure decline records pressure P2, pressure difference △ P2, flow velocity Q1, volume VOL2=(VOL1+ △ V1) at this time, can use and reach
The western quantitative fluid permeability K2 calculated at this time.
Volume adjustment means are adjusted, its pumping cylinder is made to move right, increase system bulk by △ Vi, system bulk increases at this time
Add, pressure decline records pressure Pi, pressure difference △ Pi, flow velocity Q1, volume VOLi=(VOL1+ △ Vi) at this time, can use and reach
The western quantitative fluid permeability Ki calculated at this time.
It repeats the above steps, until system is expanded into maximum.
Pressure-volume relationship curve and pressure-△ Pi relation curve are done, pressure when there is inflection point is saturation pressure
Power.
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.
Claims (10)
1. the device of saturated with fluid pressure and percolation ability in a kind of measurement porous media, which is characterized in that the device includes: height
Warm high pressure core holding unit, type bidirectional piston pump, volume adjustment means, pressure acquisition device and pressure difference acquisition device；
Wherein, the volume adjustment means include chamber and piston, and the piston side is effective chamber, and the piston can be
The chamber indoor moving, adjusts the volume of effective chamber；
Wherein, prepare liquid flows into type bidirectional piston pump via effective chamber, and type bidirectional piston pump makes prepare liquid flow through high temperature and pressure rock core
Core sample in clamper；
The pressure acquisition device is for acquiring real-time pressure suffered by prepare liquid, the pressure acquisition end of the pressure difference acquisition device
The two sides of the high temperature and pressure core holding unit are set to, for detecting the pressure difference before and after prepare liquid flows through core sample.
2. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 1
In, further include confining pressure system, the confining pressure system is connected to the high temperature and pressure core holding unit, for be the high temperature and pressure
Core sample pressure in core holding unit.
3. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 1
In the type bidirectional piston pump includes shell, pumping piston, servo motor and screw rod, and the screw rod is arranged in the shell, will
The shell is divided into upper chamber and lower chambers, and the pumping piston is arranged on the screw rod, and the servo motor can drive
The piston moves on the screw rod, and the both ends of the high temperature and pressure core holding unit are connected to described by upper chamber's pipeline
Upper chamber two sides.
4. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 3
In further including lower chambers pipeline, the lower chambers pipeline is connected to the lower chambers two sides, and prepare liquid is via the lower chambers pipe
Road flows into the type bidirectional piston pump.
5. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 4
In the pressure acquisition device is arranged on the lower chambers pipeline.
6. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 5
In further including prepare liquid circulating line, the prepare liquid circulating line is connected to upper chamber's pipeline and the lower chambers pipe
Road.
7. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 6
In further including automatic reverse valve group, automatic reverse valve group setting is managed in the prepare liquid circulating line and the upper chamber
The junction in road.
8. the device of saturated with fluid pressure and percolation ability, feature exist in measurement porous media according to claim 7
In the automatic reverse valve group includes the first automatic reverse valve group and the second automatic reverse valve group；
Wherein, the first automatic reverse valve group and the second automatic diverter valve group are respectively arranged at the type bidirectional piston pump two sides；
Wherein, the first automatic reverse valve group includes: V1 interface, V2 interface, V3 interface, V4 interface, the V1 interface and institute
It states V2 interface to be respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, the V3 interface and V4 interface setting exist
On the prepare liquid circulating line；
Wherein, the second automatic reverse valve group includes: V5 interface, V6 interface, V7 interface, V8 interface, the V5 interface and institute
It states V6 interface to be respectively communicated in high temperature and pressure core holding unit and type bidirectional piston pump, the V7 interface and V8 interface setting exist
On the prepare liquid circulating line.
9. a kind of based on saturated with fluid pressure and percolation ability in measurement porous media described in any one of claim 1-8
Device measurement method, which is characterized in that this method comprises:
Core sample to be measured is clamped by high temperature and pressure core holding unit；
Device is vacuumized, then adjusts unit temp to experimental temperature；
Prepare liquid is injected into device via volume adjustment means；
It is mobile to control piston, so that prepare liquid is flowed through core sample two sides to be measured, prepare liquid pressure, prepare liquid flow through at this time for acquisition
The volume of pressure difference, flow velocity to be measured and effective chamber before and after core sample to be measured；
Pressure difference before and after core sample to be measured, flow velocity to be measured and effective chamber are flowed through based on prepare liquid pressure, prepare liquid
Volume and darcy, which quantitatively calculate, obtains fluid permeability；
Change the volume of effective chamber of volume adjustment means, and then adjust prepare liquid pressure, obtains prepare liquid and be pressurized
The relation curve and prepare liquid pressure and prepare liquid of power and effect chamber volume flow through the relationship of pressure difference before and after core sample to be measured
Curve；
Pressure when inflection point occurs in the relation curve saturated with fluid pressure in porous media as testing liquid.
10. a kind of measurement method according to claim 9, which is characterized in that it is described via volume adjustment means to device
Interior injection prepare liquid；Control piston is mobile, so that prepare liquid is flowed through core sample two sides to be measured and includes:
Prepare liquid flows into the lower chambers of type bidirectional piston pump via effective chamber and lower chambers pipeline；
Prepare liquid circulating line is flowed into via lower chambers pipeline；
Then upper chamber's pipeline is flowed into via the first automatic reverse valve group and the first automatic reverse valve group；
V3 interface, V4 interface, V7 interface, V8 interface are closed, V1 interface, V2 interface, V5 interface, V6 interface, control pumping are opened
Piston is mobile, and prepare liquid is made to flow through core sample to be measured two sides via upper chamber's pipeline；
When pumping piston is moved to shell side, V3 interface, V4 interface, V7 interface, V8 interface are opened, closes V1 interface, V2
Pumping piston movement is reset to the shell other side by interface, V5 interface, V6 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279364.6A CN110320138B (en) | 2018-03-30 | 2018-03-30 | Device and method for measuring fluid saturation pressure and seepage capacity in porous medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279364.6A CN110320138B (en) | 2018-03-30 | 2018-03-30 | Device and method for measuring fluid saturation pressure and seepage capacity in porous medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110320138A true CN110320138A (en) | 2019-10-11 |
| CN110320138B CN110320138B (en) | 2021-12-24 |
Family
ID=68112014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810279364.6A Active CN110320138B (en) | 2018-03-30 | 2018-03-30 | Device and method for measuring fluid saturation pressure and seepage capacity in porous medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110320138B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5635631A (en) * | 1992-06-19 | 1997-06-03 | Western Atlas International, Inc. | Determining fluid properties from pressure, volume and temperature measurements made by electric wireline formation testing tools |
| US20060070426A1 (en) * | 2004-10-01 | 2006-04-06 | Halliburton Energy Services, Inc. | Method and apparatus for acquiring physical properties of fluid samples at high temperatures and pressures |
| CN1826455A (en) * | 2003-06-20 | 2006-08-30 | 贝克休斯公司 | Downhole pv tests for bubble point pressure |
| CN102877834A (en) * | 2012-09-14 | 2013-01-16 | 中国石油天然气股份有限公司 | Device and method for quickly testing bubble point pressure in well |
| CN104145080A (en) * | 2012-02-24 | 2014-11-12 | 普拉德研究及开发股份有限公司 | Systems and methods of determining fluid properties |
| CN104237099A (en) * | 2014-08-29 | 2014-12-24 | 中国石油大学 | Device and method for determining radial permeability of compact rock core |
| CN105804726A (en) * | 2016-04-29 | 2016-07-27 | 中国石油天然气股份有限公司 | Bubble point pressure testing device and method |
| CN106248545A (en) * | 2015-06-04 | 2016-12-21 | 中国石油化工股份有限公司 | The determinator of the Test Liquid Permeability of Core of tight rock and method under reservoir conditions |
| CN107101773A (en) * | 2017-04-14 | 2017-08-29 | 中国石油天然气股份有限公司 | Bubble point pressure and the method for testing and test device for intending bubble point pressure |
-
2018
- 2018-03-30 CN CN201810279364.6A patent/CN110320138B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5635631A (en) * | 1992-06-19 | 1997-06-03 | Western Atlas International, Inc. | Determining fluid properties from pressure, volume and temperature measurements made by electric wireline formation testing tools |
| CN1826455A (en) * | 2003-06-20 | 2006-08-30 | 贝克休斯公司 | Downhole pv tests for bubble point pressure |
| US20060070426A1 (en) * | 2004-10-01 | 2006-04-06 | Halliburton Energy Services, Inc. | Method and apparatus for acquiring physical properties of fluid samples at high temperatures and pressures |
| CN104145080A (en) * | 2012-02-24 | 2014-11-12 | 普拉德研究及开发股份有限公司 | Systems and methods of determining fluid properties |
| CN102877834A (en) * | 2012-09-14 | 2013-01-16 | 中国石油天然气股份有限公司 | Device and method for quickly testing bubble point pressure in well |
| CN104237099A (en) * | 2014-08-29 | 2014-12-24 | 中国石油大学 | Device and method for determining radial permeability of compact rock core |
| CN106248545A (en) * | 2015-06-04 | 2016-12-21 | 中国石油化工股份有限公司 | The determinator of the Test Liquid Permeability of Core of tight rock and method under reservoir conditions |
| CN105804726A (en) * | 2016-04-29 | 2016-07-27 | 中国石油天然气股份有限公司 | Bubble point pressure testing device and method |
| CN107101773A (en) * | 2017-04-14 | 2017-08-29 | 中国石油天然气股份有限公司 | Bubble point pressure and the method for testing and test device for intending bubble point pressure |
Non-Patent Citations (2)
| Title |
|---|
| 唐蜜等: "多孔介质对原油泡点影响的实验研究", 《重庆科技深学院学报（自然科学版）》 * |
| 童敏等: "毛细管压力对凝析气相态的影响", 《石油钻采工艺》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110320138B (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108896599B (en) | System and method for testing gas-water relative permeability curve | |
| CN106884635B (en) | Low and ultra-low permeability reservoir CO2Method for measuring minimum flooding miscible pressure | |
| CN110296921B (en) | Testing device and testing method for shale gas permeability under reservoir conditions in steady state method | |
| Corey | Measurement of water and air permeability in unsaturated soil | |
| CN103510944B (en) | A kind of High Temperature High Pressure closure/prevent telling simulating-estimating device and its evaluation methodology | |
| CN111257202A (en) | Shale fracturing fluid forced imbibition and flowback experimental method under condition of containing adsorbed gas | |
| CN207379891U (en) | Fractured shale gas-water phases flowing fracture condudtiviy evaluating apparatus | |
| CN105203705B (en) | A kind of heavy component deposition causes the method for testing of reservoir damage | |
| CN109001438A (en) | A kind of joint seal gas shutoff experimental simulation device and test method | |
| CN104316449A (en) | Experimental method and experimental device for determinating volcanic gas-water relative permeability | |
| CN104359819A (en) | Device and method for determining gas-water relative permeability of low-infiltration dense rock core | |
| CN106872328A (en) | A kind of test device and method of testing of flow in low permeability core porosity and permeability | |
| CN203275179U (en) | Multifunctional waterborne polymer colloid performance testing device | |
| CN108051643A (en) | Multipair dynamic monitoring displacement system of multi-functional long cores radial direction | |
| CN106814011A (en) | It is a kind of to determine the device and method that foam generates boundary in porous media | |
| CN102706786A (en) | Dynamic shale pore pressure transmission tester | |
| CN114136861B (en) | Experimental system and evaluation method for drying salting-out effect of near-wellbore zone of gas storage | |
| CN113866069B (en) | Shale core permeability experimental device and method | |
| CN106706492A (en) | Penetration device for researching porous medium whole-zone penetration mechanism | |
| CN206497006U (en) | A kind of oily saline contacts angle measuring system based on CT scan | |
| CN107014698A (en) | The measurement apparatus and measuring method of a kind of high temperature compressed coefficient of rock and permeability | |
| CN106840790A (en) | CO is tested based on tubule consolidated model long2The method and system of crude oil MMP | |
| CN205826624U (en) | A kind of long cores hydrocarbon gas drives experimental provision | |
| CN202735216U (en) | Drilling fluid semipermeable membrane evaluation device | |
| CN111595731B (en) | Heterogeneous viscoelastic particle solution resistance coefficient testing system and testing method for oil displacement |
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 |