CN116754600A - Heat conductivity coefficient correction device under simulated formation fluid environment - Google Patents
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- 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
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
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Abstract
The invention relates to the technical field of heat transfer testing, in particular to a thermal conductivity coefficient correcting device under simulated formation fluid environment, which comprises a constant temperature and constant pressure device, a heating control device, a pressing device and a testing module; the constant temperature and constant pressure device is internally provided with a rock sample isolated by a pressurizing and heating medium, a set confining pressure is applied to the rock sample through the pressurizing and heating medium, and the rock sample is provided with a plurality of temperature measuring components; the heating control device is used for setting the temperature and heating the constant temperature and constant pressure device; the pressure applying device is communicated with the constant temperature and pressure device and is used for setting pressure to pressurize the constant temperature and pressure device; the testing module is used for placing a thermal conductivity measuring probe of the thermal conductivity tester in the constant temperature and constant pressure device, and testing and recording rock thermal conductivity data and pictures of different saturated fluids. The invention does not correct the thermal conductivity by a single physical experiment or digital model, but measures and corrects in real time, thus achieving high efficiency, accuracy and economy.
Description
Technical Field
The invention relates to the technical field of heat transfer testing, in particular to a thermal conductivity coefficient correction device under a simulated formation fluid environment.
Background
Rock thermal conductivity is a key parameter for calculating the geothermal flow value, and has important reference value for estimating the geothermal resource quantity and optimizing the geothermal resource beneficial region. The thermal conductivity of rock means the energy which passes through per unit time when the temperature vertically downward in the direction of heat flow transfer in the rock differs by 1 deg.c/m when heat conduction occurs in the rock, and is expressed as the capacity of heat transfer in the rock.
The measurement of the rock thermal conductivity mainly comprises in-situ measurement and laboratory measurement, wherein the in-situ measurement has a plurality of limitations, the measurement process is complex, and the laboratory measurement has simple operation and higher accuracy, thereby being the most main measurement means for obtaining the rock thermal conductivity. Rock thermal conductivity laboratory measurements can be classified into steady state and unsteady state methods based on factors such as heat conduction principles, heat flow direction, sample shape and volume size. Compared with an unsteady state method, the steady state method has relatively longer heat balance time, but can directly measure the heat conductivity coefficient; the unsteady state method is to deduce the thermal conductivity of the rock according to the change relation of the temperature distribution in the rock along with time and the change relation of the heating power and the material temperature, and is more rapid and convenient compared with the steady state method.
Factors affecting rock thermal conductivity are three aspects of rock texture, temperature and pressure, wherein the complexity and randomness of rock texture are key to accurate recovery of rock thermal conductivity. Rock texture, i.e., the composition and configuration of the rock, includes the mineral composition, porosity, pore structure, water saturation, etc. of the rock. Because of the large number of factors affecting the accurate recovery of rock heat conductivity, the heat conductivity coefficient correction difficulty and the low efficiency in the stratum fluid environment are high, and therefore, the heat conductivity coefficient correction device in the simulated stratum fluid environment is provided.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the device for correcting the heat conductivity coefficient under the simulated formation fluid environment, which is used for correcting the heat conductivity in real time instead of a single physical experiment or a digital model, so that the device is efficient, accurate and economic, and solves the problems of high difficulty and low efficiency in correcting the heat conductivity coefficient under the formation fluid environment due to the fact that more elements influencing the accurate recovery of the heat conductivity of rock in the prior art are provided.
The invention provides the following technical scheme: a thermal conductivity coefficient correcting device under simulated stratum fluid environment comprises a constant temperature and constant pressure device, a heating control device, a pressing device and a testing module;
the constant temperature and constant pressure device is internally provided with a rock sample isolated by a pressurizing and heating medium, a set confining pressure is applied to the rock sample through the pressurizing and heating medium, and the rock sample is provided with a plurality of temperature measuring components;
the heating control device is connected with the constant temperature and constant pressure device and is used for setting the temperature and heating the constant temperature and constant pressure device; the pressing device is communicated with the constant temperature and constant pressure device and is used for setting pressure to press the constant temperature and constant pressure device; setting the confining pressure of the rock core through a confining pressure device, and simulating the confining pressure environment which is the same as the stratum;
the test module is used for placing a heat conductivity measuring probe of a heat conductivity tester in the constant temperature and constant pressure device and testing the heat conductivity coefficients of the simulated oil, the simulated water, the simulated gas and the dry sample; placing a rock sample of saturated simulated oil, saturated simulated water and saturated simulated gas into a hollow clamp holder; rock thermal conductivity data and pictures of saturated different fluids were tested and recorded.
Preferably, the constant temperature and pressure device comprises a constant pressure box, and the rock sample is arranged in the constant pressure box;
the constant-pressure box comprises copper temperature-transmitting compression-resistant layers on two sides, a fixed compression-resistant plate on the bottom and a movable compression-resistant plate on the top, and pressure scales are arranged between the movable compression-resistant plate and the copper temperature-transmitting compression-resistant layers.
Preferably, the constant pressure tank is connected with the constant pressure pump through a pressure transmission line.
Preferably, a vacuum layer heat insulation layer is further arranged outside the constant-pressure box, and constant-temperature liquid is filled between the vacuum heat insulation layer and the constant-temperature box.
Preferably, the heating control device comprises a heating resistance wire and a heating device, wherein the heating resistance wire is positioned in the constant temperature liquid and is connected with an external heating device.
Preferably, the temperature measuring component adopts a temperature sensor, is arranged in the constant temperature liquid, and is connected with an external temperature control device.
Preferably, the ring pressure device comprises a back pressure pump, and the back pressure pump is communicated with the constant temperature liquid through a liquid conveying pipeline.
Preferably, the constant temperature and pressure device is connected with the constant pressure pump through a pressure transmission wire.
Preferably, the constant temperature and constant pressure device is connected with the thermal conductivity tester through a thermal conductivity conducting wire.
Preferably, the thermal conductivity meter is connected with a data correction processing terminal.
The invention provides a thermal conductivity correction device in simulated stratum fluid environment, which is internally provided with a rock sample isolated by a pressurized heating medium, wherein the rock sample is heated by applying set confining pressure to the pressurized heating medium, and a plurality of temperature measuring components are arranged on the rock sample. The heating control device is connected with the constant temperature and constant pressure device, and is used for setting the temperature and heating the device; in addition, the pressing device is communicated with the constant temperature and constant pressure device, and the device is pressurized by set pressure; and the confining pressure of the rock core is set through the annular pressure pump device, and the confining pressure environment which is the same as the stratum is simulated. The invention does not correct the thermal conductivity by a single physical experiment or digital model, but measures and corrects in real time, thus achieving high efficiency, accuracy and economy.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a graph of thermal conductivity versus effective porosity for dry and saturated water samples according to an embodiment of the present invention;
FIG. 3 is a graph showing the variation of rock thermal conductivity with porosity of saturated water, oil and air according to the embodiment of the invention.
In the figure: 1. a return pressure pump; 2. a liquid delivery conduit; 3. a vacuum layer heat insulation layer; 4. heating the resistance wire; 5. constant temperature liquid; 6. a heating device; 7. fixing a pressure-resistant plate; 8. a constant pressure tank; 9. a movable pressure-resistant plate; 10. a pressure scale; 11. a copper plate temperature-transmitting compression-resisting layer; 12. a thermal conductivity measurement probe; 13. fixing the supporting frame; 14. a temperature sensor; 15. a temperature control device; 16. a constant pressure pump; 17. a pressure transmission line; 18. a thermal conductivity meter; 19. a data correction processing terminal; 20. and a thermal conductivity conductive wire.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides a technical solution: a thermal conductivity coefficient correcting device under simulated stratum fluid environment comprises a constant temperature and constant pressure device, a heating control device, a pressing device and a testing module;
the constant temperature and constant pressure device is internally provided with a rock sample isolated by a pressurizing and heating medium, a set confining pressure is applied to the rock sample through the pressurizing and heating medium, and the rock sample is provided with a plurality of temperature measuring components; the constant temperature and pressure device comprises a constant pressure box 8, and a rock sample is arranged in the constant pressure box 8;
the constant pressure box 8 comprises copper plate heat transfer compression resistant layers 11 on two sides, a fixed compression resistant plate 7 at the bottom and a movable compression resistant plate 9 at the top, and pressure scales 10 are arranged between the movable compression resistant plate 9 and the copper plate heat transfer compression resistant layers 11. The constant pressure tank 8 is connected to a constant pressure pump 16 through a pressure transmission line 17. The constant temperature and pressure device is connected with the constant pressure pump 16 through a pressure transmission wire 17. The outside of the constant pressure box 8 is also provided with a vacuum layer heat insulation layer 3, and constant temperature liquid 5 is filled between the vacuum heat insulation layer and the constant temperature box. A fixed supporting frame 13 is arranged between the vacuum heat insulation layer and the copper plate heat transfer compression resistant layer 11. The annular pressure device comprises a back pressure pump 1, and the back pressure pump 1 is communicated with constant temperature liquid 5 through a liquid conveying pipeline 2.
Constant temperature and constant pressure box parameters:
constant temperature liquid: edible oil, control temperature: 0-200 ℃;
pressure box: material (copper-high coefficient of thermal conductivity, high pressure conductivity), 5X 20X 40cm, compressive strength: 0-50MPa.
The heating control device is connected with the constant temperature and constant pressure device and is used for setting the temperature and heating the constant temperature and constant pressure device; the pressure applying device is communicated with the constant temperature and pressure device and is used for setting pressure to pressurize the constant temperature and pressure device; setting the confining pressure of the rock core through a confining pressure device, and simulating the confining pressure environment which is the same as the stratum; the heating control device comprises a heating resistance wire 4 and a heating device 6, wherein the heating resistance wire 4 is positioned in the constant temperature liquid 5 and is connected with the external heating device 6.
The testing module is used for placing the thermal conductivity measuring probe 12 of the thermal conductivity tester 18 in a constant temperature and constant pressure device and testing the thermal conductivity coefficients of the simulated oil, the simulated water, the simulated gas and the dry sample; placing a rock sample of saturated simulated oil, saturated simulated water and saturated simulated gas into a hollow clamp holder; rock thermal conductivity data and pictures of saturated different fluids were tested and recorded. The temperature measuring part adopts a temperature sensor 14, is arranged in the constant temperature liquid 5 and is connected with an external temperature control device 15. The constant temperature and pressure device is connected with the thermal conductivity meter 18 through a thermal conductivity conducting wire 20. The thermal conductivity meter 18 is connected to a data correction processing terminal 19.
The basic instrument of the invention is a THB100 rock thermal conductivity tester imported by Germany Lin Saisi company, and the improved rock thermal conductivity correction experimental device under different fluid environments comprises a sample preparation module, an environment module, a test module and a data processing module.
(1) Sample preparation module
The sample preparation module comprises 4 steps of artificial rock core preparation, artificial rock core physical property measurement, sample cutting and drying, sample saturated fluid and the like. Manufacturing a sandstone core sample by using an artificial core manufacturing technology; determination of physical Properties of sandstone samples, preferably porosity differences within.+ -. 1%, permeability differences within.+ -. 0.1X10 × -3 μm 2 Sample preparation in the same; cutting square sample with length of 10cm, width of 5cm and height of 2cm, and feeding in oven at 110deg.CDrying for 24 hours; simulated formation water, simulated oil and simulated gas (N) 2 Or Ar) slowly saturates the rock sample at a rate of 0.01ml/min, a pressure differential level of 0.5 MPa.
(2) Environment module
In order to eliminate the influence of environmental factors such as temperature, pressure and the like on rock thermal conductivity measurement, the project establishes a normal pressure heat preservation environmental module. The module detects the change of the ambient pressure through the pressure detection device, and the constant temperature is set for the rock sample by the incubator, so that the rock thermal conductivity measurement process of the rock sample is not interfered by the temperature and pressure environments.
(3) Test module
Placing a sensor chip of the THB100 rock thermal conductivity tester in the environmental module, and firstly, testing thermal conductivity coefficients of simulated oil, simulated water, simulated gas and a dry sample; then placing the rock sample of saturated simulated oil, saturated simulated water and saturated simulated gas into a hollow clamp; finally, rock thermal conductivity data and pictures of saturated different fluids were tested and recorded.
(4) Data processing module
Based on rock sample physical properties (porosity, permeability), simulated formation water thermal conductivity, simulated oil thermal conductivity, oven-dried rock sample thermal conductivity, saturated water rock sample thermal conductivity, saturated oil rock sample thermal conductivity, saturated gas (N) 2 Or Ar) measuring the thermal conductivity of the rock sample, and processing the obtained data by using different mathematical functional relations to establish a correction formula and a drawing plate which accord with geological thinking.
This stage is expected to use software such as SPSS, grapher, etc. to process and map the results.
The main technical parameter indexes are as follows:
(1) Sample parameter index:
porosity: 6% -20%;
permeability: 0.1X10 times -3 μm 2 -10×10 -3 μm 2 ；
Sample length: 10cm;
sample width: 5cm;
sample height: 2cm.
(2) Environmental parameter index:
experimental temperature: room temperature (25 ℃) to 200 ℃;
simulation pressure: 0-40MPa;
the specification of the clamp holder is as follows: the length, width and height of the strip are respectively 15cm, 10cm and 5cm;
pressure measurement accuracy: 0.1MPa;
temperature measurement accuracy: 0.1 ℃.
(3) Testing parameter indexes:
sensor size: 82X 42mm;
instrument range: 0.01-100W/mK.
The verification process of the invention is as follows:
and correcting the rock thermal conductivity under different fluid saturation by adopting two technologies of physical experiments and numerical simulation respectively, preparing core samples of three fluids of saturated simulated oil, saturated simulated gas and saturated simulated water respectively, carrying out rock thermal conductivity experimental test work under the condition of unchanged control temperature and pressure, discussing the influence of different fluids on the rock thermal conductivity, and establishing a rock thermal conductivity fluid correction formula and a plate.
The heat flow propagation path in the rock is complex, affected by heterogeneous distribution of rock mineral composition, pore structure, pore fluid, etc., and rock thermal conductivity is considered as the effective thermal conductivity of thermal conductivity interactions of different phases. According to fourier's law, the effective thermal conductivity of rock can be expressed by:
wherein lambda is eff Is the rock effective thermal conductivity (W/(m.K)); q is the heat flux density (W/m) 2 ) The method comprises the steps of carrying out a first treatment on the surface of the L is the sample length (m); t (T) 1 And T 2 The rock heat transfer boundary temperatures (K), respectively.
The experimental results show that in a loose-structured sandstone (porosity. Phi. > 6%), the effect of the fluid in the pores on the effective thermal conductivity of the rock is large (Yang Shuzhen et al, 1986; yang Shuzhen et al, 1993). For fluid correction models of effective thermal conductivity, a number of theoretical model building and experimental means validation works have been carried out by the former (He et al, 2019; jia et al, 2019; chen Chi et al, 2020; guo Ye et al, 2020;Forster et al, 2021).
(1) Johansen model and application
The Johansen model (1975) is widely used in terms of complexity and representativeness, and different rock thermal conductivity correction models are derived based on this model. In general, these models apply a new K e The thermal conductivity of the soil, the dry rock and the saturated rock is calculated by a function or a new formula. In addition, thermal conductivity correction of these models also takes into account the effect of temperature as a variable.
(2) Saturated fluid validation experiment
The difference in thermal conductivity of different fluids in the pores is large, resulting in a difference in effective thermal conductivity of the rock. Among them, the thermal conductivity of water is 0.6W/(mK) which is larger than that of kerosene (0.13W/(mK)) and air (0.026W/(mK)).
Fuchs et al (2013) compare the calculation results of rock thermal conductivity by different methods such as geometric average, arithmetic and harmonic average, hashin and Shtrikman average and the like based on the test experiment of rock thermal conductivity of two phases (liquid and solid), consider that the two have better correlation, establish a prediction model and control the error of the result within 5% -10%.
Nagaraju and Roy (2014) establish the concept of effective aqueous thermal conductivity, the difference between saturated water rock thermal conductivity and dry rock sample rock thermal conductivity divided by dry rock sample rock thermal conductivity. Based on 64 rock sample experiments, the effective water-containing thermal conductivity is increased along with the increase of the porosity, and experimental observation results and theoretical model prediction results have higher fitness. Experimental and theoretical results indicate that ignoring the theoretical calculation of rock thermal conductivity for relatively low porosity (5%) results in an error in the effective thermal conductivity measurement of around 10% (fig. 2).
Chen et al (2017) found that by measuring the rock thermal conductivity of water, kerosene, air saturated with fine sandstone of the same porosity, the fine sandstone thermal conductivity was sequentially reduced with water, kerosene, air saturated at the same porosity (fig. 3).
(3) Nuclear magnetism/CT modeling experiment
Rachel et al (2011) quantitatively characterize the water saturation of the 4-fast sand rock sample based on a nuclear magnetic resonance test, and qualitatively analyze the change of the rock sample thermal conductivity with the water saturation in combination with a rock thermal conductivity test. Research shows that the rock sample has relatively great change in data of rock heat conductivity in relatively high water saturation and relatively low water saturation, and the change is caused mainly by the action of displacement pressure and capillary force. Except for the two more specific cases, the rock thermal conductivity varies as a linear function.
Qin et al (2019) based on CT scan core sample size, according to fractal geometry theory, put forward a theoretical model of effective thermal conductivity of porous media of different liquid saturation in consideration of geometric parameters (including porosity, liquid phase size) of the porous media.
Today, hydrocarbon reservoirs have entered the middle and late stages of exploration and development, and for hydrocarbon reservoirs at high ground temperatures, geothermal energy has gradually entered human vision as a new energy source. However, the underground fluid of the oil-gas-containing basin is complex in distribution, the influence on the rock heat conductivity is large, the calculation of the geothermal flow value is not accurate enough, and small errors are brought to the evaluation of geothermal resources of the oil field, so that the subsequent geothermal energy development is influenced. Therefore, the invention not only provides the influence of the water content in the rock on the heat conductivity, but also considers the influence of oil and gas on the heat conductivity of the rock, and provides a theoretical basis and a technical method for further development of the geothermal energy of the oil field.
The invention improves the anisotropism, the heterogeneity and the experimental environment in the rock thermal conductivity experimental test and calculation process so as to obtain the thermal conductivity coefficient correction device or the calculation method under the simulated stratum fluid environment.
(1) Anisotropy of
Layered rock masses and the like have significant anisotropies, and especially in field practical engineering applications thermal conductivity anisotropies must be considered. The thermal conductivity varies in the 2 directions of vertical and parallel bedding, and the thermal conductivity of the rock in the parallel bedding direction is slightly greater than in the vertical bedding direction. And the change range of the heat conductivity anisotropy of the dry state in part of the data is slightly larger than that of the water saturated state, which indicates that the increase of the saturation degree is helpful for reducing the heat conductivity non-uniformity.
The invention adopts a linear cutting technology to cut the rock core/rock plate along the bedding surface and along the bedding surface respectively, and the rock thermal conductivity values are obtained by testing respectively.
(2) Heterogeneity of
The non-uniformity of the pore structure and mineral composition of the rock results in a rock having very strong non-uniform properties of thermal conductivity. The non-uniformity of the thermal conductivity of the rock can further affect the non-uniformity of the temperature field, which in turn can create thermal stresses within the rock, while localized tensile stresses can lead to cracking of the rock. Therefore, the non-uniform property of rock heat conductivity is important to the research of rock breaking mechanism under the deep temperature and pressure coupling condition, and is one of hot spots and difficulties in the current research.
The invention adopts the mode of artificial rock core, and prepares the artificial rock core under the same/similar porosity and permeability conditions under the same formula.
(3) Experimental environment
The laboratory can control environmental conditions such as temperature, pressure and the like as much as possible to achieve a complex environment where the rock is located, but the environment still differs greatly from the real environment where the rock is located, such as the real stress condition where the rock is located, the flowing state of underground water, the direction of heat flow and the like, and the information which cannot be accurately recovered in the laboratory can lead to the fact that the thermal conductivity of the rock measured by the laboratory is far from the actual thermal conductivity. In addition, the high-temperature and high-pressure complex geological environment simulating the stratum can also generate errors on the sensing function of the measuring instrument, and can also cause little influence on the accuracy of the testing result of the thermal conductivity of the rock in situ. Thus, accurate measurement of rock thermal conductivity in complex environments still faces significant difficulties and challenges.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a thermal conductivity correction device under simulation stratum fluid environment which characterized in that: the device comprises a constant temperature and constant pressure device, a heating control device, a pressing device and a testing module;
the constant temperature and constant pressure device is internally provided with a rock sample isolated by a pressurizing and heating medium, a set confining pressure is applied to the rock sample through the pressurizing and heating medium, and the rock sample is provided with a plurality of temperature measuring components;
the heating control device is connected with the constant temperature and constant pressure device and is used for setting the temperature and heating the constant temperature and constant pressure device; the pressing device is communicated with the constant temperature and constant pressure device and is used for setting pressure to press the constant temperature and constant pressure device; setting the confining pressure of the rock core through a confining pressure device, and simulating the confining pressure environment which is the same as the stratum;
the testing module is used for placing a thermal conductivity measuring probe (12) of a thermal conductivity tester (18) in the constant temperature and pressure device and testing the thermal conductivity coefficients of the simulated oil, the simulated water, the simulated gas and the dry sample; placing a rock sample of saturated simulated oil, saturated simulated water and saturated simulated gas into a hollow clamp holder; rock thermal conductivity data and pictures of saturated different fluids were tested and recorded.
2. The simulated formation fluid environment thermal conductivity correction device of claim 1, wherein: the constant temperature and pressure device comprises a constant pressure box (8), and the rock sample is arranged in the constant pressure box (8);
the constant pressure box (8) comprises copper temperature-transmitting compression-resistant layers (11) on two sides, a fixed compression-resistant plate (7) on the bottom and a movable compression-resistant plate (9) on the top, and pressure scales (10) are arranged between the movable compression-resistant plate (9) and the copper temperature-transmitting compression-resistant layers (11).
3. The device for correcting thermal conductivity in a simulated formation fluid environment of claim 2, wherein: the constant pressure tank (8) is connected with a constant pressure pump (16) through a pressure transmission wire (17).
4. The device for correcting thermal conductivity in a simulated formation fluid environment of claim 2, wherein: the constant pressure box (8) is also provided with a vacuum layer heat insulation layer (3), and constant temperature liquid (5) is filled between the vacuum heat insulation layer and the constant temperature box.
5. The simulated formation fluid environment thermal conductivity correction device of claim 4, wherein: the heating control device comprises a heating resistance wire (4) and a heating device (6), wherein the heating resistance wire (4) is positioned in the constant temperature liquid (5) and is connected with the external heating device (6).
6. The simulated formation fluid environment thermal conductivity correction device of claim 4, wherein: the temperature measuring component adopts a temperature sensor (14), is arranged in the constant temperature liquid (5), and is connected with an external temperature control device (15).
7. The simulated formation fluid environment thermal conductivity correction device of claim 4, wherein: the ring pressure device comprises a back pressure pump (1), and the back pressure pump (1) is communicated with constant temperature liquid (5) through a liquid conveying pipeline (2).
8. The simulated formation fluid environment thermal conductivity correction device of claim 1, wherein: the constant temperature and constant pressure device is connected with the constant pressure pump (16) through a pressure transmission wire (17).
9. The simulated formation fluid environment thermal conductivity correction device of claim 1, wherein: the constant temperature and constant pressure device is connected with a thermal conductivity tester (18) through a thermal conductivity conducting wire (20).
10. The simulated formation fluid environment thermal conductivity correction device of claim 1, wherein: the thermal conductivity measuring instrument (18) is connected with a data correction processing terminal (19).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310722953.8A CN116754600A (en) | 2023-06-16 | 2023-06-16 | Heat conductivity coefficient correction device under simulated formation fluid environment |
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