CN108562610A - A kind of method and system of determining thermal conductivity of rocks - Google Patents
A kind of method and system of determining thermal conductivity of rocks Download PDFInfo
- Publication number
- CN108562610A CN108562610A CN201810203414.2A CN201810203414A CN108562610A CN 108562610 A CN108562610 A CN 108562610A CN 201810203414 A CN201810203414 A CN 201810203414A CN 108562610 A CN108562610 A CN 108562610A
- Authority
- CN
- China
- Prior art keywords
- reaction kettle
- core sample
- temperature
- pressure
- specified
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The embodiment of the present application discloses a kind of method and system of determining thermal conductivity of rocks.The method includes：First core sample and the second core sample are put into reaction kettle, heated at constant temperature processing is carried out to reaction kettle by heating furnace and pressurized treatments are carried out to reaction kettle by hydraulic device, so that the temperature and pressure in reaction kettle is respectively at assigned temperature and specified pressure；PULSE HEATING processing is carried out to the thermal element being arranged between the first core sample and the second core sample by PULSE HEATING device；The temperature data of thermal element after being heated by data processing equipment acquisition pulse, and according to temperature data, determine the thermal conductivity of core sample original under assigned temperature and specified pressure.Technical solution provided by the embodiments of the present application can effectively determine the thermal conductivity of core sample under the conditions of geology.
Description
Technical field
This application involves In Situ Heating modification production technique field, more particularly to a kind of determining rock thermal conductivities in oil exploration
The method and system of rate.
Background technology
In recent years, shale oil gas is increasingly becoming the hot spot of domestic and international unconventionaloil pool field exploration and research, with North America allusion quotation
The shale oil zone of type compares (Ro>1.1%), Chinese lacustrine shale maturity is generally relatively low, is in generative window range (0.6%<
Ro<1.1%).For the ground such as Chinese shale maturity is relatively low, hydrocarbon potential is big, area distributions are wide, series of strata are more, resource potential is big
Matter feature, many scholars and mechanism think that external modification technology in situ may be effective way that China realizes shale oil exploitation
Diameter.How the distribution of thermal field becomes and restricts shale oil exploitation well site deployment and economic core in effective evaluation In Situ Heating upgrading processes
The key of calculation.Current heterogeneity phantom mainly carries out simulation by softwares such as ANASYS and Fluent.However, in simulation process
Important parameter thermal conductivity be typically using normal temperature and pressure Conduction Coefficient Detector Basing obtain, not only have ignored high temperature and pressure to rock fever
The influence of property also has ignored important crack and generates the influence of fluid, the precision of structure thermal field seriously affected, to influence
The assessment of shale oil economy simultaneously brings economic loss to later stage field operation.
The method of thermal conductivity test at present includes mainly hot plate method, laser method and the heat-pole method etc. of routine.These thermal conductivities
Test method can not carry out high temperature and pressure test both limited by temperature and pressure condition.Wherein, not using hot plate method and laser method
Thermal conductivity can be directly tested, can only be by thermal diffusion coefficient and specific heat combined calculation thermal conductivity, and the pressure tested can only be normal
Pressure；And the test temperature of heat-pole method can only be room temperature, pressure is also only limitted to normal pressure.Therefore, there is an urgent need for study a kind of new determination rock
The method and system of stone thermal conductivity, with the thermal conductivity of core sample under the conditions of effectively determining geology, to be shale oil heating
Modification exploitation in situ provides key parameter, has great importance to petroleum industry.
Invention content
The purpose of the embodiment of the present application is to provide a kind of method and system of determining thermal conductivity of rocks, effectively to determine geology
Under the conditions of core sample thermal conductivity.
In order to solve the above technical problems, it is this that the embodiment of the present application, which provides a kind of method and system of determining thermal conductivity of rocks,
What sample was realized：
A kind of method of determining thermal conductivity of rocks, is provided with original core sample, and to the original core sample into
The first core sample and the second core sample obtained after row working process；The method includes：
First core sample and second core sample are put into reaction kettle, by heating furnace to the reaction
Kettle carries out heated at constant temperature processing and carries out pressurized treatments to the reaction kettle by hydraulic device, so that in the reaction kettle
Temperature and pressure be respectively at assigned temperature and specified pressure；
It is first to the heat being arranged between first core sample and second core sample by PULSE HEATING device
Part carries out PULSE HEATING processing；
The PULSE HEATING is acquired treated the temperature data of thermal element by data processing equipment, and according to the temperature
Degrees of data determines the thermal conductivity of the original core sample described under the assigned temperature and the specified pressure.
In preferred embodiment, the shape of first core sample and second core sample is cylinder；The cylinder
The diameter of shape sample is ranging from：1 centimetre~4 centimetres；High ranging from 2 centimetres~10 centimetres of the cylindrical sample.
In preferred embodiment, heated at constant temperature processing is carried out to the reaction kettle by heating furnace, including：
The reaction kettle is placed in the heating furnace, by the heating furnace according to the specified rate of heat addition to described anti-
Kettle is answered to be heated, until the temperature rise in the heating furnace and is within a specified time kept to the assigned temperature
Temperature in the heating furnace is in the assigned temperature.
In preferred embodiment, the value range of the specified time includes 2~3 hours.
In preferred embodiment, pressurized treatments are carried out to the reaction kettle by hydraulic device, including：
It is arranged into the reaction kettle in first core sample and second core sample by the hydraulic device
Piston element above product applies pressure, to compress the space in the reaction kettle, until the pressure in the reaction kettle increases
To the specified pressure.
In preferred embodiment, according to the temperature data, the thermal conductivity of the original core sample is determined, including：
Temperature and corresponding acquisition time to treated the thermal element of PULSE HEATING described in the temperature data carry out
Linear fit processing, obtains the fitting a straight line and the corresponding slope of the fitting a straight line of temperature and time；
Using the absolute value of the slope of the fitting a straight line as the original under the assigned temperature and the specified pressure
The thermal conductivity of beginning core sample.
In preferred embodiment, the method further includes：
When the pressure in the reaction kettle is more than the specified pressure, by being connected with the outlet of the reaction kettle lower end
The fluid in the reaction kettle is discharged in the pumping equipment connect, to reduce the pressure in the reaction kettle to the specified pressure；Its
In, fluid in the reaction kettle is by first core sample and second core sample in the assigned temperature, described
It is generated under specified pressure.
A kind of system of determining thermal conductivity of rocks, the system comprises：
Reaction kettle, for providing closed environment to the first core sample and the second core sample；Wherein, first rock core
Sample and second core sample after being processed to original core sample by obtaining；
Heating furnace, for carrying out heated at constant temperature processing to the reaction kettle, so that the temperature in the reaction kettle is in
Assigned temperature；
Hydraulic device is connected with the upper end of the reaction kettle, for carrying out pressurized treatments to the reaction kettle, so that
Pressure in the reaction kettle is in specified pressure；
PULSE HEATING device, by the aperture of the reaction kettle side wall be arranged in the reaction kettle and described the
Thermal element between one core sample and second core sample is connected, and the PULSE HEATING device is used for the heat member
Part carries out PULSE HEATING processing；
Data processing equipment is connected by the aperture of the reaction kettle side wall with the thermal element, described for acquiring
The temperature data of PULSE HEATING treated thermal element, and according to the temperature data is determined in the assigned temperature and described
The thermal conductivity of the original core sample under specified pressure.
In preferred embodiment, the reaction kettle includes being arranged on first core sample and second core sample
The piston element of side；Correspondingly,
The hydraulic device is used to apply pressure to the piston element, to compress the space in the reaction kettle, until
Pressure in the reaction kettle increases to the specified pressure.
In preferred embodiment, the system also includes：Pumping equipment；
The pumping equipment is connected by the outlet of the reaction kettle lower end, for when the pressure in the reaction kettle
When more than the specified pressure, the fluid in the reaction kettle is discharged, is specified to described with reducing the pressure in the reaction kettle
Pressure；Wherein, the fluid in the reaction kettle by first core sample and second core sample in the specified temperature
It is generated under degree, the specified pressure.
By the above technical solution provided by the embodiments of the present application as it can be seen that determining thermal conductivity of rocks provided by the embodiments of the present application
Method and system, first core sample and second core sample can be put into reaction kettle, pass through heating furnace
Heated at constant temperature processing is carried out to the reaction kettle and pressurized treatments are carried out to the reaction kettle by hydraulic device, so that institute
The temperature and pressure stated in reaction kettle is respectively at assigned temperature and specified pressure；It can be existed to setting by PULSE HEATING device
Thermal element between first core sample and second core sample carries out PULSE HEATING processing；At can be by data
Reason device acquires the PULSE HEATING treated the temperature data of thermal element, and according to the temperature data, determines described
The thermal conductivity of the original core sample under assigned temperature and the specified pressure.In this way, can effectively determine and geological conditions
The thermal conductivity of core sample under the assigned temperature and specified pressure that are consistent.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of flow chart of the embodiment of the method for determining thermal conductivity of rocks of the application；
Fig. 2 is the diagrammatic cross-section that the application determines reaction kettle in the system embodiment of thermal conductivity of rocks.
Specific implementation mode
The embodiment of the present application provides a kind of method and system of determining thermal conductivity of rocks.
With reference to the drawings and the description of the specific embodiments of the present invention, the details of the present invention can clearly be understood.But
It is the specific implementation mode of invention described herein, is only used for explaining the purpose of the present invention, and cannot understands in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrary possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.It should be noted that when element is referred to as " being set to " another yuan
Part, it can be directly on another element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be inside two elements
Connection, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term can be understood as the case may be.Term as used herein " vertical ", " horizontal ",
"upper", "lower", "left", "right" and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
Any and all combinations of relevant Listed Items.
The embodiment of the present application provides a kind of method of determining thermal conductivity of rocks.The method of the determining thermal conductivity of rocks carries
It is provided with original core sample, and the first core sample and second obtained after being processed to the original core sample
Core sample.
In the present embodiment, the original core sample can be acquired by the method for drilling extracting core.For example, described
The method that the mode of drilling extracting core can be conventional coring or pressurize coring.Wherein, the original core sample acquired is complete straight
Diameter core sample.
In the present embodiment, the first core sample obtained after being processed to the original core sample and
Two core samples, can specifically include, and can carry out cutting process to the original core sample by cutting machine, obtain two
Core sample, and described two core samples are processed by shot blasting respectively by polishing machine, so that obtain described first
The top bottom surface of core sample and second core sample is smooth.
In the present embodiment, after cutting process and polishing treatment, obtained first core sample and described
Second core sample shape is cylinder.The diameter of the cylindrical sample is ranging from：1 centimetre~4 centimetres；The cylinder
High ranging from 2 centimetres~10 centimetres of shape sample.In actual application, first core sample and second rock
The size of heart sample can be adjusted according to actual demand.Preferably, first core sample and second core sample
The diameter of product is identical, and height is also identical.
Fig. 1 is a kind of flow chart of the embodiment of the method for determining thermal conductivity of rocks of the application.The determining thermal conductivity of rocks
Method, include the following steps.
Step S101：First core sample and second core sample are put into reaction kettle, heating furnace is passed through
Heated at constant temperature processing is carried out to the reaction kettle and pressurized treatments are carried out to the reaction kettle by hydraulic device, so that institute
The temperature and pressure stated in reaction kettle is respectively at assigned temperature and specified pressure.
In the present embodiment, first core sample and second core sample can be sequentially placed into up and down anti-
It answers in kettle, and thermal element will be placed between first core sample and second core sample, so that the thermal element
It is in contact respectively with the top surface of the bottom surface of first core sample and second core sample.Wherein, the heat member
The position of part is located at the centre position of the bottom surface of first core sample or the top surface of second core sample.
In the present embodiment, the shape of the thermal element can be circle, and material is mica.
In the present embodiment, heated at constant temperature processing is carried out to the reaction kettle by heating furnace, can specifically include, it can
The reaction kettle to be placed in the heating furnace, then can by the heating furnace according to the specified rate of heat addition to described
Reaction kettle is heated, until the heating furnace in temperature rise to the assigned temperature, finally within a specified time
The temperature in the heating furnace is kept to be in the assigned temperature.
In the present embodiment, the assigned temperature and the specified pressure specifically can according to practical application request or
Practical geological conditions residing for core sample is set.For example, the value range of the assigned temperature may include 25 degrees Celsius
~700 degrees Celsius, the value range of the specified pressure may include 0~60 megapascal.
In the present embodiment, the value range of the specified time may include 2~3 hours.
In the present embodiment, pressurized treatments are carried out to the reaction kettle by hydraulic device, can specifically include, it can be with
It is arranged above first core sample and second core sample into the reaction kettle by the hydraulic device
Piston element applies pressure, to compress the space in the reaction kettle, until the pressure in the reaction kettle increases to the finger
Constant-pressure.
Step S102：By PULSE HEATING device to setting first core sample and second core sample it
Between thermal element carry out PULSE HEATING processing.
It in the present embodiment, can be by PULSE HEATING device to being arranged in first core sample and described second
Thermal element between core sample carries out PULSE HEATING processing.Specifically, the specific implementation step of the PULSE HEATING processing can
To be：By the aperture on the reaction kettle side wall, the thermal element is connected with the PULSE HEATING device, and to described
Aperture is sealed processing；Then pulse current is generated by the PULSE HEATING device, and using the pulse current to institute
It states thermal element and carries out PULSE HEATING.
Step S103：The PULSE HEATING is acquired treated the temperature data of thermal element by data processing equipment, and
According to the temperature data, the thermal conductivity of the original core sample described under the assigned temperature and the specified pressure is determined.
In the present embodiment, after carrying out PULSE HEATING processing to the thermal element, the temperature of the thermal element increases,
Since the thermal element is in contact with first core sample and second core sample respectively, the heat of the thermal element
It is constantly scattered and disappeared by way of the heat transfer of first core sample and second core sample, the temperature of the thermal element
Variation takes place, at this moment, the resistance of thermal element also changes, to generate a degree of voltage at the both ends of thermal element
Drop.And for the different core sample of heat conductivility, the heat loss degree or heat loss rate of thermal element are different, to produce
Raw voltage change is also different.In this way, the temperature data for stating PULSE HEATING treated thermal element can be acquired, it can be compared with subject to
Really obtain the thermal conductivity of core sample to be measured.
In the present embodiment, after carrying out PULSE HEATING processing to the thermal element, the data processing can be passed through
Device acquires the PULSE HEATING treated the temperature data of thermal element.Wherein, the temperature data may include the heat
The temperature or heat of element and corresponding acquisition time.
In the present embodiment, according to the temperature data, the institute under the assigned temperature and the specified pressure is determined
The thermal conductivity for stating original core sample, can specifically include, can be to treated for PULSE HEATING described in the temperature data
The temperature of thermal element and corresponding acquisition time carry out linear fit processing, obtain the fitting a straight line of temperature and time and described quasi-
Close the slope of line correspondences.It specifically, can be by the temperature of treated the thermal element of PULSE HEATING described in the temperature data
With corresponding acquisition time as a data point, multiple data points that the temperature data includes can be obtained, and with
Linear fit processing is carried out to the multiple data point under the coordinate system that temperature is ordinate, acquisition time is abscissa, is obtained
The fitting a straight line of temperature and time and the corresponding slope of the fitting a straight line.Wherein, the method for linear fit processing can be with
It is the method for least square fitting.It, can after the fitting a straight line and the corresponding slope of the fitting a straight line for obtaining temperature and time
Using by the absolute value of the slope of the fitting a straight line as the original rock core under the assigned temperature and the specified pressure
The thermal conductivity of sample.
In one embodiment of the application, the method for the determining thermal conductivity of rocks can also include：It can be to described
First core sample and second core sample crush processing, and measure the specific heat of the sample after the pulverization process
Hold；It can be according to the specific heat capacity of the sample after the temperature data, the pulverization process, and in the assigned temperature and described
The thermal conductivity of the original core sample under specified pressure, calculates separately to obtain under the assigned temperature and the specified pressure
Thermal conductivity on the original rock core sample levels direction and in vertical direction.Specifically, it can count respectively as steps described below
Calculation obtains under the assigned temperature and the specified pressure on the original rock core sample levels direction and in vertical direction
Thermal conductivity：
(1), according to the temperature data, the temperature variation for determining the thermal element is associated with pass with the fitting of acquisition time
System；For example, the temperature variation of the thermal element and corresponding acquisition time can be obtained from the temperature data.Wherein,
The temperature variation is for characterizing temperature variation of the thermal element within the unit interval.Least square fitting may be used
Method processing is fitted to the temperature variation of the thermal element and corresponding acquisition time, obtain the temperature of the thermal element
Spend the fitting incidence relation of variable quantity and acquisition time；
(2), it is closed according to the theory of the temperature variation and acquisition time of the fitting incidence relation and the thermal element
Connection relationship determines the thermal diffusion system on the original rock core sample levels direction described under the assigned temperature and the specified pressure
Number.For example, following formula, which may be used, characterizes the temperature variation of the thermal element and the theoretical incidence relation of acquisition time：
Wherein, Δ T (τ) indicates that the temperature variation of the thermal element, τ indicate the acquisition time, Δ TcDescribed in expression
The temperature difference between contact resistance and insulating layer in thermal element, is a constant, and Q indicates the rated power of the thermal element, λ tables
Show the thermal conductivity of the original core sample, r0Indicate that the radius of the thermal element, a indicate the original rock core sample levels side
Upward thermal diffusion coefficient, I0Indicate that Bessel function, τ ', r and r' indicate that time variable to be integrated, the first radius become respectively
Amount and the second radius variable；Wherein, D (F0) expression formula obtained under cylindrical coordinate；By the fitting incidence relation, with
And the temperature variation of the thermal element and the theoretical incidence relation of acquisition time are compared, determine in the assigned temperature and
Thermal diffusion coefficient under the specified pressure on the original rock core sample levels direction.
(3), according to the specific heat capacity, and the original core sample under the assigned temperature and the specified pressure
Thermal diffusion coefficient in horizontal direction determines the original rock core sample levels described under the assigned temperature and the specified pressure
Thermal conductivity on direction；For example, following formula, which may be used, determines the original under the assigned temperature and the specified pressure
Thermal conductivity in beginning core sample horizontal direction：
λH=a × C
Wherein, λHIndicate that the thermal conductivity on the original rock core sample levels direction, a indicate the original rock core sample water
Square upward thermal diffusion coefficient, C indicate the specific heat capacity；
(4), according to the heat under the assigned temperature and the specified pressure on the original rock core sample levels direction
The thermal conductivity of conductance and the original core sample, determination are described original under the assigned temperature and the specified pressure
Thermal conductivity in core sample vertical direction.It is determined in the assigned temperature and described specified for example, following formula may be used
Thermal conductivity under pressure on the original rock core samples vertical direction：
Wherein, λHIndicate the thermal conductivity on the original rock core sample levels direction, λVIndicate the original rock core sample water
Square upward thermal conductivity, λ indicate the thermal conductivity of the original core sample.
The embodiment of the present application also provides a kind of systems of determining thermal conductivity of rocks.The system of the determining thermal conductivity of rocks
May include：Reaction kettle, is used to the first core sample and the second core sample provides closed environment；Wherein, described
One core sample and second core sample after being processed to original core sample by obtaining；Heating furnace, can be with
For carrying out heated at constant temperature processing to the reaction kettle, so that the temperature in the reaction kettle is in assigned temperature；Hydraulic pressure fills
It sets, is connected with the upper end of the reaction kettle, can be used for carrying out pressurized treatments to the reaction kettle, so that the reaction kettle
Interior pressure is in specified pressure；PULSE HEATING device, can be by the aperture and setting of the reaction kettle side wall described anti-
It answers in kettle and the thermal element between first core sample and second core sample is connected, the PULSE HEATING
Device can be used for carrying out PULSE HEATING processing to the thermal element；Data processing equipment passes through the hole of the reaction kettle side wall
Mouthful it is connected with the thermal element, can be used for acquiring the PULSE HEATING treated the temperature data of thermal element, and according to
The temperature data determines the thermal conductivity of the original core sample described under the assigned temperature and the specified pressure.
In the present embodiment, as shown in Fig. 2, may include being arranged in first core sample 2 in the reaction kettle 1
With the piston element 11 of second core sample, 3 top.Correspondingly, the hydraulic device can be used for the piston element
11 apply pressure, to compress the space in the reaction kettle 1, until the pressure in the reaction kettle 1 increases to the specified pressure
Power.Wherein, the setting of thermal element 4 in the reaction kettle 1 and first core sample and second core sample it
Between.
In the present embodiment, as shown in Fig. 2, the system can also include：Pumping equipment.The pumping equipment can be with
It is connected by the outlet 12 of 1 lower end of the reaction kettle, can be used for being more than the specified pressure when the pressure in the reaction kettle 1
When power, the valve on the pumping equipment can be opened, the fluid in the reaction kettle 1 is discharged, to reduce in the reaction kettle 1
Pressure to the specified pressure.Wherein, the fluid in the reaction kettle 1 is by first core sample 2 and second rock
Heart sample 3 generates under the assigned temperature, the specified pressure.
To sum up, the method and system of determining thermal conductivity of rocks provided by the embodiments of the present application, can be by described first
Core sample and second core sample are put into reaction kettle, and heated at constant temperature processing is carried out to the reaction kettle by heating furnace
And pressurized treatments are carried out to the reaction kettle by hydraulic device, so that the temperature and pressure in the reaction kettle is located respectively
In assigned temperature and specified pressure；It can be by PULSE HEATING device to being arranged in first core sample and second rock
Thermal element between heart sample carries out PULSE HEATING processing；After the PULSE HEATING processing can be acquired by data processing equipment
Thermal element temperature data, and according to the temperature data, determine described under the assigned temperature and the specified pressure
The thermal conductivity of original core sample.In this way, can effectively determine under the assigned temperature and specified pressure being consistent with geological conditions
The thermal conductivity of core sample.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.Above-described embodiment is only
Illustrate the technical concepts and features of the present invention, its object is to those skilled in the art can understand the contents of the present invention
And implement according to this, it is not intended to limit the scope of the present invention.It is all according to equivalence changes made by spirit of the invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of method of determining thermal conductivity of rocks, which is characterized in that be provided with original core sample, and to the primitive rock
The first core sample and the second core sample that heart sample obtains after being processed；The method includes：
First core sample and second core sample are put into reaction kettle, by heating furnace to the reaction kettle into
Row heated at constant temperature handles and carries out pressurized treatments to the reaction kettle by hydraulic device, so that the temperature in the reaction kettle
Degree and pressure are respectively at assigned temperature and specified pressure；
By PULSE HEATING device to the thermal element that is arranged between first core sample and second core sample into
The processing of row PULSE HEATING；
The PULSE HEATING is acquired treated the temperature data of thermal element by data processing equipment, and according to the temperature number
According to the thermal conductivity of the determining original core sample described under the assigned temperature and the specified pressure.
2. according to the method described in claim 1, it is characterized in that, first core sample and second core sample
Shape is cylinder；The diameter of the cylindrical sample is ranging from：1 centimetre~4 centimetres；The high model of the cylindrical sample
Enclose is 2 centimetres~10 centimetres.
3. according to the method described in claim 1, it is characterized in that, being carried out at heated at constant temperature to the reaction kettle by heating furnace
Reason, including：
The reaction kettle is placed in the heating furnace, by the heating furnace according to the specified rate of heat addition to the reaction kettle
Heated, until the heating furnace in temperature rise to the assigned temperature, and within a specified time keep described in
Temperature in heating furnace is in the assigned temperature.
4. according to the method described in claim 3, it is characterized in that, the value range of the specified time includes 2~3 hours.
5. according to the method described in claim 1, it is characterized in that, being carried out at pressurization to the reaction kettle by hydraulic device
Reason, including：
It is arranged on first core sample and second core sample into the reaction kettle by the hydraulic device
The piston element of side applies pressure, to compress the space in the reaction kettle, until the pressure in the reaction kettle increases to institute
State specified pressure.
6. according to the method described in claim 1, it is characterized in that, according to the temperature data, determine in the assigned temperature
With the thermal conductivity of the original core sample under the specified pressure, including：
Temperature and corresponding acquisition time to treated the thermal element of PULSE HEATING described in the temperature data carry out linear
Process of fitting treatment obtains the fitting a straight line and the corresponding slope of the fitting a straight line of temperature and time；
Using the absolute value of the slope of the fitting a straight line as the primitive rock under the assigned temperature and the specified pressure
The thermal conductivity of heart sample.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
When the pressure in the reaction kettle is more than the specified pressure, it is connected by the outlet with the reaction kettle lower end
The fluid in the reaction kettle is discharged in pumping equipment, to reduce the pressure in the reaction kettle to the specified pressure；Wherein,
Fluid in the reaction kettle is by first core sample and second core sample in the assigned temperature, described specified
It is generated under pressure.
8. a kind of system of determining thermal conductivity of rocks, which is characterized in that the system comprises：
Reaction kettle, for providing closed environment to the first core sample and the second core sample；Wherein, first core sample
With second core sample by being obtained after being processed to original core sample；
Heating furnace, for carrying out heated at constant temperature processing to the reaction kettle, so that the temperature in the reaction kettle is in specified
Temperature；
Hydraulic device is connected with the upper end of the reaction kettle, for carrying out pressurized treatments to the reaction kettle, so that described
Pressure in reaction kettle is in specified pressure；
PULSE HEATING device, by the aperture and setting of the reaction kettle side wall in the reaction kettle and in first rock
Thermal element between heart sample and second core sample is connected, the PULSE HEATING device be used for the thermal element into
The processing of row PULSE HEATING；
Data processing equipment is connected by the aperture of the reaction kettle side wall with the thermal element, for acquiring the pulse
The temperature data of thermal element after heat treatment, and according to the temperature data, it is determining in the assigned temperature and described specified
The thermal conductivity of the original core sample under pressure.
9. system according to claim 8, which is characterized in that the reaction kettle includes being arranged in first core sample
Piston element above product and second core sample；Correspondingly,
The hydraulic device is used to apply pressure to the piston element, to compress the space in the reaction kettle, until described
Pressure in reaction kettle increases to the specified pressure.
10. system according to claim 8, which is characterized in that the system also includes：Pumping equipment；
The pumping equipment is connected by the outlet of the reaction kettle lower end, for being more than when the pressure in the reaction kettle
When the specified pressure, the fluid in the reaction kettle is discharged, to reduce the pressure in the reaction kettle to the specified pressure；
Wherein, the fluid in the reaction kettle by first core sample and second core sample in the assigned temperature, institute
It states and is generated under specified pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203414.2A CN108562610B (en) | 2018-03-13 | 2018-03-13 | Method and system for determining rock thermal conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203414.2A CN108562610B (en) | 2018-03-13 | 2018-03-13 | Method and system for determining rock thermal conductivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108562610A true CN108562610A (en) | 2018-09-21 |
| CN108562610B CN108562610B (en) | 2021-11-02 |
Family
ID=63532566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810203414.2A Active CN108562610B (en) | 2018-03-13 | 2018-03-13 | Method and system for determining rock thermal conductivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108562610B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257196A (en) * | 2020-02-24 | 2020-06-09 | 西南石油大学 | Rock thermophysical parameter prediction method based on formation factors |
| CN111795993A (en) * | 2019-04-09 | 2020-10-20 | 中国石油化工股份有限公司 | Rock thermophysical property transient test system and method under high temperature and high pressure |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124104A1 (en) * | 1983-04-27 | 1984-11-07 | Polska Akademia Nauk Centrumbadan Molekularnych I Makromolekularnych | Method and apparatus for measuring the thermal conductivity and thermal capacity of materials |
| EP2607892A1 (en) * | 2010-08-13 | 2013-06-26 | Technische Universität Darmstadt | Method for determining the thermal and temperature conductivity of a sample |
| CN203502367U (en) * | 2013-07-01 | 2014-03-26 | 北京中建建筑科学研究院有限公司 | Device for testing heat conductivity coefficient of material by transient plane heat source method |
| CN104502402A (en) * | 2014-12-23 | 2015-04-08 | 北京科技大学 | Method for measuring thermophysical property of columnar thermal insulation material |
| CN104502400A (en) * | 2014-11-25 | 2015-04-08 | 航天材料及工艺研究所 | Heat barrier material high temperature heat conductivity plane heat source test system and method |
| CN104597078A (en) * | 2015-01-14 | 2015-05-06 | 北京科技大学 | Method for measuring anisotropic material heat conductivity based on small-plane heat source |
| CN105784756A (en) * | 2016-03-08 | 2016-07-20 | 中国科学院南海海洋研究所 | Testing system and method for thermophysical properties of rock at high pressure |
| CN105928975A (en) * | 2016-05-31 | 2016-09-07 | 西安交通大学 | Variable-atmosphere pressure heat conductivity coefficient testing device based on transient plane source method |
| CN106442614A (en) * | 2016-09-21 | 2017-02-22 | 中国地质大学（武汉） | Rock thermophysical parameter testing method and testing system under conditions of high temperature and high pressure |
| CN106770449A (en) * | 2017-02-22 | 2017-05-31 | 中国地质调查局南京地质调查中心 | The measurement apparatus of rock thermal conductivity factor under high-temperature and high-pressure conditions |
| CN206321594U (en) * | 2016-12-27 | 2017-07-11 | 中国科学院理化技术研究所 | A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique |
| CN107192734A (en) * | 2017-01-22 | 2017-09-22 | 东南大学 | The sensor and its test device of a kind of utilization Adsorbent By Using Transient Plane Source Technique test rock mass thermal conductivity |
-
2018
- 2018-03-13 CN CN201810203414.2A patent/CN108562610B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124104A1 (en) * | 1983-04-27 | 1984-11-07 | Polska Akademia Nauk Centrumbadan Molekularnych I Makromolekularnych | Method and apparatus for measuring the thermal conductivity and thermal capacity of materials |
| EP2607892A1 (en) * | 2010-08-13 | 2013-06-26 | Technische Universität Darmstadt | Method for determining the thermal and temperature conductivity of a sample |
| CN203502367U (en) * | 2013-07-01 | 2014-03-26 | 北京中建建筑科学研究院有限公司 | Device for testing heat conductivity coefficient of material by transient plane heat source method |
| CN104502400A (en) * | 2014-11-25 | 2015-04-08 | 航天材料及工艺研究所 | Heat barrier material high temperature heat conductivity plane heat source test system and method |
| CN104502402A (en) * | 2014-12-23 | 2015-04-08 | 北京科技大学 | Method for measuring thermophysical property of columnar thermal insulation material |
| CN104597078A (en) * | 2015-01-14 | 2015-05-06 | 北京科技大学 | Method for measuring anisotropic material heat conductivity based on small-plane heat source |
| CN105784756A (en) * | 2016-03-08 | 2016-07-20 | 中国科学院南海海洋研究所 | Testing system and method for thermophysical properties of rock at high pressure |
| CN105928975A (en) * | 2016-05-31 | 2016-09-07 | 西安交通大学 | Variable-atmosphere pressure heat conductivity coefficient testing device based on transient plane source method |
| CN106442614A (en) * | 2016-09-21 | 2017-02-22 | 中国地质大学（武汉） | Rock thermophysical parameter testing method and testing system under conditions of high temperature and high pressure |
| CN206321594U (en) * | 2016-12-27 | 2017-07-11 | 中国科学院理化技术研究所 | A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique |
| CN107192734A (en) * | 2017-01-22 | 2017-09-22 | 东南大学 | The sensor and its test device of a kind of utilization Adsorbent By Using Transient Plane Source Technique test rock mass thermal conductivity |
| CN106770449A (en) * | 2017-02-22 | 2017-05-31 | 中国地质调查局南京地质调查中心 | The measurement apparatus of rock thermal conductivity factor under high-temperature and high-pressure conditions |
Non-Patent Citations (1)
| Title |
|---|
| 苗社强 等: ""高温高压下矿物岩石热导率的实验研究进展"", 《地球物理学进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795993A (en) * | 2019-04-09 | 2020-10-20 | 中国石油化工股份有限公司 | Rock thermophysical property transient test system and method under high temperature and high pressure |
| CN111257196A (en) * | 2020-02-24 | 2020-06-09 | 西南石油大学 | Rock thermophysical parameter prediction method based on formation factors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108562610B (en) | 2021-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113826099B (en) | Flow simulation and transient well analysis method based on generalized pipe flow seepage coupling | |
| Constantz et al. | Temperature-profile methods for estimating percolation rates in arid environments | |
| CN109490507B (en) | The experiment test device and method of fracturing fluid recovery (backflow) rate after shale gas well volume fracturing | |
| CN103498662B (en) | A kind of cement sheath structural integrity dynamics experimental device | |
| CN107313759B (en) | Hypotonic heavy crude reservoir straight well thermal recovery pressure distribution forecasting method and system | |
| CN107727832A (en) | A kind of method and device for determining hydrocarbon source rock expulsive efficiency | |
| CN108661631B (en) | Yield prediction method | |
| CN101560880A (en) | Supercritical well bore multi-phase flow test device | |
| CN109505576A (en) | Shale hydraulic fracturing Three-dimensional full coupling discrete fracture network analogy method and system | |
| CN104463345B (en) | A kind of method and device for predicting stratum oil-water interface position | |
| Du | Characteristics and the formation mechanism of the heterogeneous microfractures in the tight oil reservoir of Ordos Basin, China | |
| CN102373918B (en) | Oil well batch production simulation experimental facility for low-permeability reservoir | |
| Ichim et al. | Investigations on the surface well cement integrity induced by thermal cycles considering an improved overall transfer coefficient | |
| CN108562610A (en) | A kind of method and system of determining thermal conductivity of rocks | |
| Lu et al. | Influence factors of unpropped fracture conductivity of shale | |
| US10108167B2 (en) | Systems and methods for adjusting production of a well using gas injection | |
| CN208432512U (en) | A kind of inefficient water circulation evolutionary process decompression test simulation system | |
| CN110501387A (en) | A kind of high-resolution multifrequency array resistors rate well logging physical simulating method of the object containing natural gas hydrate deposits | |
| CN114201932A (en) | Well testing simulation method for tight reservoir fracturing well under complex condition | |
| Meng et al. | Experimental research on three dimensional flow characteristics of multiple horizontal fractures utilizing an innovative experiment apparatus | |
| Huang et al. | Transient Interporosity flow in shale/tight oil reservoirs: Model and application | |
| Cai et al. | A new fractal temporal conductivity model for propped fracture and its application in tight reservoirs | |
| CN202325491U (en) | Batch production simulating experimental facility of oil well with low-permeability reservoir | |
| Liu et al. | Transient transfer shape factor for fractured tight reservoirs: Effect of the dynamic threshold pressure gradient in unsteady flow | |
| Li et al. | Investigation on pore structure, fluid mobility and water huff-n-puff oil recovery of tight volcanic oil reservoir |
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 |