A well logging combined with physical simulation wellbore device and test method

Abstract

The present invention relates to the field of petroleum and geological technology, and more specifically, to a well logging combined physical simulation wellbore device and test method, the device comprising a rock model, a well logging instrument, an information acquisition system and a tank body provided with a plurality of support columns and a plurality of partitions; the well logging instrument is connected to the information acquisition system by signal; the tank body is divided into an upper layer, a middle layer and a lower layer by a plurality of partitions; a plurality of support columns are used to support the partitions; the rock model is provided with measuring holes running through both ends in the vertical direction; the middle layer is provided with a rock bin, and the upper layer and the lower layer are respectively provided with an upper center tube and a lower center tube connected to the rock bin; the side walls of the top and bottom of the upper layer, the middle layer and the lower layer are respectively provided with a water inlet and a water outlet; the well logging instrument is placed in the upper center tube, the rock model and the lower center tube to collect data. The water inlet and the water outlet can empty the liquid of each layer, and by replacing the rock model of the target area, the real environment of different well logging can be simulated, and a simulated wellbore adapted to the well logging environment can be quickly established.

Description

Technical Field

[0001] The present invention relates to the field of petroleum and geological technology, and more specifically, to a well logging combined with physical simulation wellbore device and a test method. Background Art

[0002] At present, domestic oil and gas exploration and development is oriented towards complex lithology reservoirs, including gravel sandstone, carbonate rock, volcanic rock, etc. These reservoirs often have different lithology and mineral components, heavy mud and ash in some areas, or complex pore structure, resulting in poor reservoir properties and low natural productivity. The measured logging curve response is affected by many factors, and there is a small difference in resistivity between oil and gas and water layers, and even the resistivity of oil and gas layers is lower than that of surrounding rocks, which brings great difficulties to reservoir evaluation, and the accuracy of conventional fluid identification and reservoir parameter evaluation is low.

[0003] The industry often uses numerical simulation methods to solve the above-mentioned difficult problems, but currently such numerical simulation results lack large-scale core logging instruments combined with physical simulation for calibration and effective verification. At present, various logging instrument manufacturers, in order to ensure that various logging instruments have a certain degree of accuracy and consistency of measurement results, do not consider oil and gas layers. Well logging instruments are mainly implemented using the pure water layer standard well calibration method, and these standard well groups are only calibrated for their respective instruments, that is, density well groups are only calibrated for density instruments, and neutron well groups are calibrated for neutron instruments.

[0004] In addition, some researchers simulate specific reservoirs with a single instrument, such as designing a resistivity simulation device for carbonate fractures and cracks, which has a narrow scope of application. Therefore, it is necessary to design a variable core logging combined with physical simulation experiment to simulate the logging response characteristics of reservoirs with different lithology, physical properties, oil content, etc. under various mud environments, so as to improve the understanding of complex reservoirs and the accuracy of logging evaluation.

[0005] At present, a dual lateral logging quantitative evaluation method is disclosed, which includes the following steps: establishing a cave model to simulate the real environment of the wellbore dual lateral logging instrument; performing dual lateral numerical simulation calculation of the cave formation to obtain the dual lateral logging response law of the cave formation; the cave model includes a formation, a wellbore, and a cave, the wellbore passes through the cave, and the cave has a filling. However, it is difficult to replace the filling in the cave model, and the cave model needs to be rebuilt when simulating different logging environments, which is time-consuming and labor-intensive. Summary of the invention

[0006] The present invention improves the accuracy of well logging simulation evaluation results, provides an experimental basis for well logging evaluation of complex reservoirs, and provides a well logging combined with physical simulation wellbore device and an experimental method. Through a three-layer simulation wellbore device built with fiberglass, a core collected in the target area is placed in the middle layer, and the upper and lower layers are filled with fillers simulating the real environment to improve the efficiency of simulating different well logging and efficiently obtain evaluation data.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A logging combined with physical simulation wellbore device comprises a rock model, a logging instrument, an information acquisition system and a tank body provided with a plurality of support columns and a plurality of partitions; the logging instrument is connected to the information acquisition system by signal; the plurality of partitions divide the tank body into an upper layer, a middle layer and a lower layer; the plurality of support columns are used to support the partitions; the rock model is provided with measuring holes penetrating through both ends in the vertical direction; the middle layer is provided with a rock bin, and the rock model is placed in the rock bin; the upper layer and the lower layer are respectively provided with an upper center tube and a lower center tube connected to the measuring hole; the measuring hole, the upper center tube and the lower center tube are coaxially arranged; the upper layer and the lower layer are filled with an equivalent first solution for simulating the surrounding rock reservoir; the outside of the rock bin in the middle layer is filled with a second solution for simulating the resistivity of infinite formations; the top and bottom side walls of the upper layer, the middle layer and the lower layer are respectively provided with water inlets and drainage outlets; the logging instrument is placed in the upper center tube, the rock model and the lower center tube to collect data.

[0009] The tank is divided into three areas by partitions, namely the upper layer, the middle layer and the lower layer. The rock model is cylindrical, with a measuring hole in the middle with the same diameter as the upper center tube and the lower center tube. The measuring instrument extends from the upper center tube outside the tank, and extends to the bottom through the measuring hole and the lower center tube of the rock model. The middle layer of the tank is provided with a rock bin for placing the rock model, which is equivalent to the rock model. The bottom of the rock bin is connected to the lower layer of the tank. The rock bin is provided with a through hole with the same diameter as the upper center tube, the lower center tube and the measuring hole; the upper center tube, the measuring hole and the lower center tube in the tank form a measuring channel for simulating well logging. The water inlet and the water outlet are both provided with valves to control their opening and closing. The water inlet is located at the upper end of each layer, and the water outlet is located at the lower end of each layer, which is conducive to emptying the liquid in each layer and realizing the rapid replacement of the filler. By replacing the rock model of the target area and placing it in the corresponding position in the tank, the real environment of different well logging can be simulated, and a simulated wellbore adapted to the well logging environment can be quickly established.

[0010] As one of the preferred solutions, the rock bin is provided with a detachable cover body, which is connected to the upper central tube; the top of the upper layer is provided with a bin cover outlet coaxial with the central tube, and the size of the bin cover outlet is adapted to the size of the cover body.

[0011] The rock bin is provided with an opening, which is upward and provided with a cover body for sealing the rock bin; the top of the cover body is connected to the upper center tube, and when the rock bin needs to be opened, the upper center tube can be lifted. A bin cover outlet is provided at the top of the tank body, which is used to pull the cover body out of the tank body, so the bin cover outlet is slightly larger than the cover body.

[0012] As one of the preferred solutions, an end cover whose size is adapted to that of the bin cover outlet is provided at the bin cover outlet; a through hole whose size is adapted to that of the center tube is provided at a position coaxial with the end cover and the upper center tube.

[0013] The end cover is circular and has a larger diameter than the outlet of the bin cover. The end cover is covered on the outlet of the bin cover to prevent debris from falling into the tank body, thereby affecting the accuracy of the measurement data, and effectively avoiding safety accidents. The end cover is provided with a through hole, which is coaxially arranged with the upper center tube, the lower center tube and the measuring hole; wherein the upper center tube extends out of the upper surface of the end cover, which can provide positioning for the end cover when it is installed.

[0014] As one of the preferred solutions, a plurality of first reinforcing ribs are provided at the corners where the upper central tube is connected to the cover body.

[0015] As one of the preferred solutions, a second reinforcing rib is provided at the corner where the partition is connected to the inner wall of the tank body.

[0016] As one of the preferred solutions, a third reinforcing rib is provided at the corner where the partition is connected to the lower center tube.

[0017] The load that the connecting surface of the structural parts can bear is limited. A reinforcing rib is added to the common vertical surface of the two combined bodies to increase the strength of the connecting surface. It has the advantages of enhancing the strength and rigidity of the product without increasing the wall thickness of the product, thereby saving material, reducing weight and reducing costs. It can also overcome the distortion of the product caused by uneven stress due to differences in wall thickness.

[0018] As one of the preferred solutions, the bottom side walls of the upper layer and the middle layer are respectively provided with exhaust ports connected to the middle layer and the lower layer; the exhaust ports are connected to the outside of the tank body.

[0019] The exhaust port is arranged at the top of the middle layer and the lower layer, and the exhaust port is connected to the outside of the tank body, so as to discharge the gas in the middle layer and the lower layer out of the tank body.

[0020] As a preferred solution, the side walls of the upper layer, the middle layer and the lower layer are respectively provided with manholes.

[0021] Manhole refers to the opening structure used for personnel to enter and exit equipment for installation, maintenance and safety inspection. According to the installation position, manholes are divided into horizontal and vertical installation manholes. The manhole set in this device is a horizontal installation manhole; the manhole cover fixing methods include revolving cover and hanging cover; the speed of manhole opening is divided into ordinary type and fast opening type, and the structure and size of manholes are generally standardized.

[0022] As one of the preferred solutions, the lower central tube is provided with a central tube water outlet connected to the outside of the tank body.

[0023] A portion near the bottom of the lower center tube is provided for discharging the liquid in the measuring channel formed by the upper center tube, the measuring hole and the lower center tube. The portion near the bottom can drain the liquid as much as possible to avoid residual liquid affecting the subsequent use of the device.

[0024] A test method for well logging combined with physical simulation of a wellbore comprises the following steps:

[0025] S1. placing the rock models in different saturation states in the rock bin;

[0026] S2. Filling the outer portion of the middle rock bin with the second solution;

[0027] S3. The first mineralized solution is filled into the upper and lower layers;

[0028] S4. Place the logging instrument in the channel formed by the upper center tube, the measuring hole and the lower center tube, inject mud, lift it up from the bottom, collect signals and feed them back to the information collection system to generate a logging curve.

[0029] The first solution is used to act as the surrounding rock; the second solution is used to simulate the resistivity of the infinite formation; the mud is used to simulate the actual formation wellbore environment; the FRP tank is divided into three layers: upper, middle and lower. The upper and lower cavities are filled with the first solution, which acts as the surrounding rock reservoir and can simulate the impact of different surrounding rocks on the logging instrument; a circular rock model is placed in the middle of the middle layer, and the rock outer chamber is filled with the second solution, which has a very large resistivity and is used to simulate the resistivity of the infinite formation. The logging instrument is placed in the rock model, and mud is added to perform gamma, resistivity, neutron and density measurements. There is a logging acquisition information system on the ground to collect the measurement signals of the logging instrument and generate corresponding logging curves.

[0030] Among them, in addition to collecting rocks from the bottom of the target area for preparation, the rock model can also be tested using artificial cores, but the artificial cores need to be prepared according to the physical properties of the rocks in the target area so that the measured data can be closer to real logging data; the first solution is sodium chloride solution, and the second solution is distilled water.

[0031] Compared with the prior art, the present invention discloses a well logging combined with physical simulation wellbore device and test method, and the beneficial effects of the present invention are: 1. The tank body, partition and support column supported by glass fiber reinforced plastic are light and hard, non-conductive, stable in performance, high in mechanical strength, less in recycling and corrosion-resistant; 2. By using the rock model of the target area, fillers that can simulate the well logging environment of the target area are placed in the corresponding position of the tank body, so as to simulate the well logging environment of the target area that tends to be real to obtain accurate well logging data for improving the evaluation accuracy; 3. The rock model can also be used for saturated water, saturated oil and oil-water mixed state tests, as well as displacement experiments, to simulate different reservoirs. Too many measurements of saturated equipment; 4. The setting of the rock bin can provide a limit for the rock model; 5. Each layer of the outer wall of the tank is provided with a manhole, which is convenient for detection personnel to enter the tank for detection and maintenance; 6. A logging combined with physical simulation wellbore method, using a first solution to act as surrounding rock; a second solution to simulate infinite formation resistivity; mud to simulate the actual formation wellbore environment; the FRP tank body is divided into upper, middle and lower layers, and the upper and lower cavities are filled with the first solution, acting as surrounding rock reservoirs, which can simulate the influence of different surrounding rocks on logging instruments, so that the environment inside the tank tends to be a real logging environment, so as to obtain more valuable reference logging evaluation data. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0033] Figure 2 It is a structural schematic diagram of embodiment 2 of the present invention.

[0034] Figure 3 It is a well logging curve diagram of the simulated production using the present invention.

[0035] Figure 4 It is a schematic diagram of the working principle of the present invention.

[0036] Among them, 1. rock model; 11. measuring hole; 2. water outlet of the center tube; 3. supporting column; 4. partition; 41. second reinforcing rib; 5. tank body; 51. upper layer; 511. upper center tube; 5111. first reinforcing rib; 512. bin cover outlet; 513. end cover; 52. middle layer; 53. lower layer; 531. lower center tube; 5311. third reinforcing rib; 54. rock bin; 541. cover body; 6. water inlet; 7. drain outlet; 8. exhaust outlet; 9. manhole; 10. information collection system;. DETAILED DESCRIPTION

[0037] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides a well logging combined with physical simulation wellbore device, comprising a rock model 1, a well logging instrument, an information acquisition system (10) and a tank body 5 provided with a plurality of support columns 3 and a plurality of partitions 4; the well logging instrument is signal-connected to the information acquisition system (10); the plurality of partitions 4 divide the tank body 5 into an upper layer 51, a middle layer 52 and a lower layer 53; the plurality of support columns 3 are used to support the partitions 4; the rock model 1 is provided with a measuring hole 11 running through both ends in the vertical direction; the middle layer 52 is provided with a rock bin 54, and the upper layer 51 and the lower layer 53 are respectively provided with an upper center tube 511 and a lower center tube 531 connected to the rock bin 54; the measuring hole 11, the upper center tube 511 and the lower center tube 531 are coaxially arranged to form a measuring channel; the well logging instrument is placed in the upper center tube 511, the rock model 1 and the lower center tube 531 to collect data.

[0040] Specifically, the tank body 5, the partition 4 and the support column are all made of non-conductive glass fiber reinforced plastic. The tank body 5, the partition 4 and the support column 3 supported by the glass fiber reinforced plastic have the characteristics of light weight and hardness, non-conductivity, stable performance, high mechanical strength, less recycling, corrosion resistance, etc. The tank body 5 is a cylinder with a height of 780 cm and a diameter of 460 cm, which is used to hold the rock model 1. The upper layer 51 and the lower layer 53 are used to fill various fillers simulating the actual environment. The logging instrument is used to perform gamma, resistivity, neutron and density measurements. The information acquisition system (10) is connected to the logging instrument signal to collect the measurement signal of the logging instrument and generate a logging curve.

[0041] The rock model 1 can collect the target area bottom rock to prepare a cylinder with a diameter of 120 cm, and open a measurement hole 11 with the same size as the conventional drilling wellbore at the axis of the rock model 1. The rock model 1 can also be tested for saturated water, saturated oil and oil-water mixed state, and displacement experiments to simulate the measurement of different saturated reservoirs.

[0042] The tank body 5 is divided into three areas by a partition 4, namely, an upper layer 51, a middle layer 52 and a lower layer 53. The rock model 1 is cylindrical, and a measuring hole 11 having a diameter equivalent to that of the upper center tube 511 and the lower center tube 531 is provided in the middle. The measuring instrument extends from the upper center tube 511 outside the tank body 5, and extends to the bottom through the measuring hole 11 and the lower center tube 531 of the rock model 1. The middle layer 52 of the tank body 5 is provided with a rock bin 54 for placing the rock model 1, and its size is equivalent to that of the rock model 1. The bottom of the rock bin 54 is connected to the lower layer 53 of the tank body 5, and the rock bin 54 is provided with a through hole having a diameter equal to that of the upper center tube 511, the lower center tube 531 and the measuring hole 11; the upper center tube 511, the measuring hole 11 and the lower center tube 531 in the tank body 5 form a measuring channel for simulating well logging. Specifically, the tank body 5 is a cylinder with a height of 780 cm and a diameter of 460 cm. The wall thickness of the tank body 5 is 5 cm, and it is used to hold the rock model 1 and fill various fillers that simulate the actual environment. The height of the upper layer 51 is 260 cm, the height of the middle layer 52 is 120 cm, and the height of the lower layer 53 is 400 cm; the diameter of the rock bin 54 is 140 cm, and the diameter of the cover 541 is 155 cm, so the cover 541 can completely cover the opening of the rock bin 54; the diameter of the bin cover outlet 512 is 160 cm, which is slightly larger than the diameter of the cover 541, and the cover 541 can be smoothly pulled out of the tank body 5, and the diameter of the end cover 513 is greater than 160 cm, and the end cover 513 can completely cover the outlet of the cover 541.

[0043] A through hole of a size adapted to the center tube is provided at a position where the end cover 513 is coaxial with the upper center tube 511. The end cover 513 is circular and has a larger diameter than the bin cover outlet 512. The end cover 513 is covered on the bin cover outlet 512 to prevent debris from falling into the tank body 5, thereby affecting the accuracy of the measurement data, and effectively avoiding safety accidents. The end cover 513 is provided with a through hole, which is coaxially arranged with the upper center tube 511, the lower center tube 531 and the measuring hole 11, and the lower center tube 531 is connected to the center tube water outlet 2 for discharging the liquid in the measuring channel out of the tank body; wherein, the upper center tube 511 extends out of the upper surface of the end cover 513, which can provide positioning for the end cover 513 when it is installed.

[0044] By using the rock model 1 of the target area, a filler capable of simulating the target area logging environment is placed at a corresponding position in the tank 5, so as to simulate the target area logging environment closer to reality and obtain accurate logging data for improving the evaluation accuracy. The rock model 1 can also be used for saturated water, saturated oil and oil-water mixed state tests, and displacement experiments, to simulate the measurement of different saturated reservoirs. Furthermore, artificial cores can be used for testing, and artificial cores of corresponding sizes can be prepared according to the physical properties of the target area rocks.

[0045] The tank body 5, the partition 4 and the pillars are all made of non-conductive fiberglass. A plurality of first reinforcing ribs 5111 are provided at the corners where the upper center tube 511 is connected to the cover body 541, and a second reinforcing rib 41 is provided at the corners where the partition 4 is connected to the inner wall of the tank body 5; a third reinforcing rib 5311 is provided at the corners where the partition 4 is connected to the lower center tube 531; by providing the reinforcing ribs, the strength of the joint surface can be increased, and the strength and rigidity of the product can be enhanced without increasing the wall thickness of the product, so as to save material usage and reduce weight.

[0046] Furthermore, a water inlet 6 for filling liquid is provided near the top of each layer, and a water outlet for draining liquid in the tank body 5 is provided near the bottom. Specifically, the water inlet 6 and the water outlet are provided with flanges to connect the water inlet pipe and the drainage pipe. More specifically, the tops of the middle layer 52 and the lower layer 53 in the tank body 5 are provided with exhaust ports 8, which are connected to the holes opened in the side wall of the tank body 5, and are used to discharge the gas in the tank body 5 out of the tank body 5. It should be noted that the device provided in this embodiment can perform logging simulation on different target areas by replacing the rock model 1.

[0047] Example 2

[0048] like Figure 2 As shown, this embodiment provides a well logging combined with physical simulation wellbore device. On the basis of embodiment 1, the upper layer 51, the middle layer 52 and the lower layer 53 are all provided with manholes 9. The inspection personnel can enter the corresponding position in the tank body 5 through the manholes 9 of the corresponding layer, so as to facilitate the maintenance of the inside of the tank body 5.

[0049] Specifically, the axis of the manhole 9 is perpendicular to the central axis of the tank body 5 and is provided with an end cover 513 . When it is necessary to enter the tank body 5 for maintenance, the manhole 9 can be opened by unscrewing the bolts fixing the end cover 513 .

[0050] Example 3

[0051] like Figure 4 As shown, this embodiment provides a well logging combined with physical simulation wellbore method, including the following steps:

[0052] S1. placing the rock models (1) in different saturation states in the rock bin (54);

[0053] S2. The second solution for simulating well logging resistivity is filled into the outside of the rock bin (54) of the middle layer (52) through the water inlet (6);

[0054] S3. The first solution for simulating the surrounding rock reservoir is charged into the upper layer (51) and the lower layer (53) through the water inlet (6);

[0055] S4. The logging instrument is placed in the channel formed by the upper center tube (511), the measuring hole (11) and the lower center tube (531), and mud is injected, and the instrument is lifted from the bottom to the top, and the collected signal is fed back to the information collection system (10) to generate a logging curve;

[0056] S5. Drain the solution in the device through the drainage port (7), replace the target area core model (1) of the next wellbore to be simulated, and repeat steps S2-S4.

[0057] Specifically, the rock in a saturated state is placed in the rock bin 54, and the second solution is introduced into the cavity formed by the middle layer 52 of the tank body 5 and the outer wall of the rock bin 54 to simulate the infinite formation resistivity; then the first solution is filled into the upper layer 51 and the lower layer 53 of the tank body 5 through the water inlet 6 to simulate the surrounding rock reservoir; mud is injected into the channel formed by the upper central tube 511, the measuring hole 11, and the lower central tube 531, and the gamma, resistivity, neutron and density measurements are performed using a logging instrument, and the feedback is sent to the information acquisition system (10) for processing to generate the following information: Figure 3 The logging curve shown in FIG. 1 is a first solution of sodium chloride solution and a second solution of distilled water. In the actual simulation process, the filler that is more in line with the actual situation can be replaced according to the actual formation of the well logging.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A well logging combined with physical simulation wellbore device, characterized in that: The invention comprises a rock model (1), a well logging instrument, an information acquisition system (10), and a tank body (5) provided with a plurality of support columns (3) and a plurality of partitions (4); the well logging instrument is connected to the information acquisition system (10) by signals; the plurality of partitions (4) divide the tank body (5) into an upper layer (51), a middle layer (52), and a lower layer (53); the plurality of support columns (3) are used to support the partitions (4); The rock model (1) is provided with measuring holes (11) penetrating through both ends in the vertical direction; the middle layer (52) is provided with a rock bin (54), and the rock model (1) is placed in the rock bin (54); the upper layer (51) and the lower layer (53) are respectively provided with an upper center tube (511) and a lower center tube (531) connected to the measuring hole (11); the measuring hole (11), the upper center tube (511), and the lower center tube (531) are coaxially arranged; The upper layer (51) and the lower layer (53) are filled with a first solution for simulating the surrounding rock reservoir; the outside of the rock bin (54) of the middle layer (52) is filled with a second solution for simulating well logging resistivity; The side walls of the top and bottom of the upper layer (51), the middle layer (52) and the lower layer (53) are respectively provided with a water inlet (6) and a water outlet (7); The logging instrument is placed in the upper central tube (511), the measuring hole (11) and the lower central tube (531) to collect data; The rock bin (54) is provided with a detachable cover (541), and the cover (541) is connected to the upper central tube (511); The top of the upper layer (51) is provided with a bin cover outlet (512) coaxial with the central tube, and the size of the bin cover outlet (512) is adapted to the size of the cover body (541); The bottom side walls of the upper layer (51) and the middle layer (52) are respectively provided with exhaust ports (8) communicating with the middle layer (52) and the lower layer (53); the exhaust ports (8) are connected to the outside of the tank body (5).

2. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: An end cover (513) having a size adapted to that of the bin cover outlet (512) is provided at the bin cover outlet (512); A through hole having a size adapted to and connected to the upper central tube (511) is provided at a position coaxial with the end cover (513) and the upper central tube (511).

3. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: A plurality of first reinforcing ribs (5111) are provided at the corners where the upper central tube (511) is connected to the cover body (541).

4. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: A second reinforcing rib (41) is provided at the corner where the partition (4) is connected to the inner wall of the tank body (5).

5. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: A third reinforcing rib (5311) is provided at the corner where the partition (4) is connected to the lower central tube (531).

6. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: Manholes (9) are respectively provided on the side walls of the upper layer (51), the middle layer (52) and the lower layer (53).

7. The well logging combined with physical simulation wellbore device according to claim 1, characterized in that: The lower central tube (531) is provided with a central tube water outlet (2) communicating with the outside of the tank body (5).

8. A test method for well logging combined with physical simulation of wellbore, characterized in that: The method of using the well logging combined with physical simulation wellbore device according to any one of claims 1 to 7 comprises the following steps: S1. placing the rock models (1) in different saturation states in the rock bin (54); S2. The second solution for simulating well logging resistivity is filled into the outside of the rock bin (54) of the middle layer (52) through the water inlet (6); S3. The first solution for simulating the surrounding rock reservoir is charged into the upper layer (51) and the lower layer (53) through the water inlet (6); S4. The logging instrument is placed in the channel formed by the upper center tube (511), the measuring hole (11) and the lower center tube (531), and mud is injected, and the instrument is lifted from the bottom to the top, and the collected signal is fed back to the information collection system (10) to generate a logging curve; S5. Drain the solution in the device through the drainage port (7), replace the target area core model (1) of the next wellbore to be simulated, and repeat steps S2-S4.

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