CN108318346B - Borehole collapse pressure testing device - Google Patents

Abstract

The invention discloses a borehole collapse pressure testing device, which comprises a pressure kettle; a diversion plug; an axial thrust mechanism; the displacement control mechanism can move along the radial direction relative to the rigid barrel, one end of the displacement control mechanism is positioned in the pressure cavity, and the other end of the displacement control mechanism is arranged on the elastic barrel; the temperature control mechanism is used for controlling the temperature in the elastic barrel; the infrared measurement mechanism comprises a first probe arranged on the lower side of the first light transmission part and a second probe arranged on the upper side of the second light transmission part and longitudinally corresponding to the first probe, and the first probe and the second probe can synchronously move along the horizontal direction; and an inclination angle control device. The technology can monitor the mechanical and displacement information in the rock uniaxial loading test, the rock triaxial mechanical test, the rock creep mechanical test, the rock temperature-change stress loading test and other tests around the well bore.

Description

Wellbore Collapse Pressure Test Device

Technical field

The invention relates to the field of rock mechanics experiments, and in particular to a wellbore collapse pressure testing device.

Background technique

With the deepening of oil and gas development, the vertical depth of drilling has approached 10,000 meters, the length of open hole sections of different well types has continued to increase, and the temperature environment of deep rocks has increased significantly. During the drilling process of high-temperature wells, the temperature of deep well wall rocks can even reach 350°C. As mentioned above, changes in rock temperature will cause changes in the structure and mechanical properties of rock. Therefore, it is necessary to accurately understand the influence of temperature changes on rock mechanical properties and damage and destruction mechanisms, and to identify and predict the strength of the well wall, especially the stability of the well wall under high temperature conditions. It has important practical significance for safe drilling engineering.

There are many methods for measuring collapse pressure, such as indoor measurement, differential method calculation, finite element prediction, etc., but most of them are not used in deep formations in oil fields. Especially for deep buried high-temperature formations, there is currently no perfect and continuous testing method. The main reasons are as follows: 1. For shallow low-temperature formations, the traditional mechanical testing method can meet the determination of rock physical parameters, and the method is mature, and data acquisition is direct, usually using uniaxial, triaxial and other mechanical testing methods; 2. With the With the development of high-temperature and high-pressure wells, the combined effects of high temperature and high pressure on rock physical parameters have intensified. Single temperature or confining pressure environment simulation can no longer accurately simulate the required environment; 3. Integrate temperature, confining pressure and optical testing to form an integrated system. A complete test system requires a high degree of integration in the pressure chamber, optical probe and other aspects.

Therefore, it is urgent to study a set of economical and simple indoor measurement methods and devices to solve the mechanical research of wellbore stability in deep high-temperature well drilling.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a wellbore collapse pressure testing device, which has a simple and intuitive structure, is easy to operate, and can realize the wellbore mechanical experiments of different well types under temperature changes. Synchronous acquisition of optical signals, and implementation of signal identification processing and creep displacement tracking testing, thereby obtaining specific displacement information on the collapse pressure of the wellbore rock temperature.

The specific technical solution of the present invention is: a wellbore collapse pressure testing device, including:

Pressure kettle, the pressure kettle includes a pressure chamber and a test chamber, the test chamber includes a rigid barrel located in the pressure chamber and an elastic barrel located in the rigid barrel and capable of deforming in the radial direction;

A diversion plug, the diversion plug is arranged at the lower part of the elastic barrel for rock accommodation, and the diversion plug has a first light-transmitting part;

An axial thrust mechanism is located on the upper side of the rock relative to the diversion plug. The axial thrust mechanism can move relative to the pressure kettle. The axial thrust mechanism is located at one end of the pressure kettle. A flow guide mechanism capable of engaging with the pressure chamber and the test chamber is provided. The flow guide mechanism includes a guide mechanism that can connect the pressure chamber and the elastic barrel when it is joined with the pressure chamber and the test chamber. There are seepage channels connected between them, and the flow guide mechanism has a second light-transmitting part;

A displacement control mechanism that can move in a radial direction relative to the rigid barrel, one end of the displacement control mechanism is located in the pressure chamber, and the other end of the displacement control mechanism is provided on the elastic barrel;

A temperature control mechanism, the temperature control mechanism is used to control the temperature in the elastic barrel;

Infrared measurement mechanism, the infrared measurement mechanism includes a first probe disposed on the lower side of the first translucent part and a second probe disposed on the upper side of the second translucent part and longitudinally corresponding to the first probe. , the first probe and the second probe can move synchronously in the horizontal direction;

An inclination angle control device can rotate the pressure kettle so that the pressure kettle forms an angle relative to the horizontal plane.

Preferably, the pressure kettle includes an upper cover, and the axial thrust mechanism includes an axial loading device and a thrust rod that is driveably connected to the axial loading device and penetrates the upper cover. The thrust rod One end located in the pressure kettle is fixedly provided with a sealing cover plate sealed with the upper cover. The flow guide mechanism includes a seepage plug that can cooperate with the elastic barrel and has a seepage channel. There is a seepage interface on the head, the guide groove of the seepage interface is connected with the seepage channel of the seepage plug, the seepage channel is connected with the inner cavity of the elastic barrel, and the guide groove is connected with the pressure chamber.

Preferably, the seepage plug is provided with a protective cover on its side away from the rock, and the protective cover is provided outside the first probe or the second probe.

Preferably, the pressure chamber has a bottom wall, a liquid guide plug communicating with the pressure chamber is provided on the bottom wall, and the guide tube is disposed on the bottom wall.

Preferably, the temperature control mechanism includes a heater extending upward from the flow guide plug.

Preferably, there is a sealed chamber between the flow guide plug and the bottom wall, and the first probe or the second probe is disposed in the sealed chamber.

Preferably, the seepage interface is provided with a plurality of guide grooves arranged in the circumferential direction on its side facing the rock, and each of the guide grooves is connected to the seepage channel.

Preferably, it includes a control unit, which is used to control the axial thrust mechanism, displacement control mechanism, temperature control mechanism, and infrared measurement mechanism.

Preferably, the second light-transmitting part is located radially between the seepage plug and the seepage interface.

The advantages of this invention: it makes up for the shortcomings of the existing rock mechanical properties testing device that cannot measure the impact of rock temperature changes on strength, fills the gap in wellbore collapse pressure testing, and innovatively develops a testing device for testing the collapse pressure of rocks under different temperature changes. The influence of temperature on the strength of high-pressure rocks, especially the impact on the collapse pressure of rocks around the wellbore, can then be used to predict and evaluate the strength of downhole wellbore, providing guidance for the prediction of wellbore stability in deep oil and gas wells, ultra-deep wells and high-temperature wells. This technology can monitor the mechanics and displacement information in uniaxial rock loading tests, rock triaxial mechanical tests, rock creep mechanical tests, rock temperature change stress loading tests and other tests around the wellbore.

Description of drawings

The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportional dimensions of each component in the figures are only schematic and are used to help the understanding of the present invention, and are not intended to specifically limit the shapes and proportional dimensions of each component of the present invention. Under the teaching of the present invention, those skilled in the art can select various possible shapes and proportional sizes according to specific circumstances to implement the present invention.

Figure 1 is a schematic structural diagram of a wellbore collapse pressure testing device according to an embodiment of the present invention.

Figure 2 is a bottom view of the axial thrust mechanism;

Figure 3 is a schematic cross-sectional view of Figure 2;

Figure 4 is a top view of the pressure kettle;

Figure 5 is a cross-sectional view of Figure 4;

Figure 6 is a schematic structural diagram of a part of the guide mechanism.

Figure 7 is a schematic structural diagram of another part of the guide mechanism.

Figure 8 is a schematic diagram of rock stress testing.

Reference signs in the above drawings: 1-pressure kettle; 2-axial thrust mechanism; 3-infrared measurement mechanism; 4-guide mechanism; 401-support; 402-guide rail; 403-probe clamping mechanism; 404-motor ; 405-Gear transmission mechanism; 5-Inclination control mechanism; 51-Flange connection seat; 52-Console base; 53-Support rod; 54-Hydraulic drive device; 55-Screw; 56-Hydraulic control box; 6- Temperature control mechanism; 7-control unit; 201-axial loading device; 202-sealing device; 203-upper cover; 204-seepage plug; 205-second light-transmitting part; 206-seepage interface; 207-sealing cover ; 208-seepage channel; 209-protective cover; 301-second probe; 303-interface; 101-pressure chamber; 102-test chamber; 103-displacement control mechanism; 104-diversion plug; 105-first light transmission 106-first probe; 107-liquid guide plug; 108-rigid barrel; 109-elastic barrel; 110-heater.

Detailed ways

The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention and should not be construed as limiting the present invention in any way. Under the teachings of the present invention, skilled persons can conceive any possible modifications based on the present invention, and these should be regarded as belonging to the scope of the present invention.

Referring to Figures 1, 2, 3, 4, 5, 6 and 7, the wellbore collapse pressure testing device in the embodiment of the present application includes: a pressure kettle 1, and the pressure kettle 1 includes a pressure chamber 101 and a test chamber 102. The test chamber 102 includes a rigid barrel 108 located in the pressure chamber 101 and an elastic barrel 109 located in the rigid barrel 108 and capable of deforming in the radial direction; a flow guide plug 104, so The flow guide plug 104 is arranged at the lower part of the elastic barrel 109 for rock accommodation. The flow guide plug 104 has a first light-transmitting part 105; an axial thrust mechanism 2, the axial thrust mechanism 2 is located on the upper side of the rock relative to the diversion plug 104, and the axial thrust mechanism 2 can move relative to the pressure kettle 1. One end of the axial thrust mechanism 2 located in the pressure kettle 1 is provided with a The flow guide mechanism for joining the pressure chamber 101 and the test chamber 102 includes a flow guide mechanism that can connect the pressure chamber 101 when the seepage plug 204 is joined to the pressure chamber 101 and the test chamber 102. The seepage channel 208 communicates with the elastic barrel 109, the flow guide mechanism has a second light-transmitting part 205; a displacement control mechanism 103, the displacement control mechanism 103 can move in the radial direction relative to the rigid barrel 108, One end of the displacement control mechanism 103 is located in the pressure chamber 101, and the other end of the displacement control mechanism 103 is provided on the elastic barrel 109; a temperature control mechanism 6 is used to control the The temperature in the elastic barrel 109 is controlled; the infrared measurement mechanism 3 includes a first probe 106 disposed on the lower side of the first translucent part 105 and a first probe 106 disposed on the second translucent part 205 The first probe 106 and the second probe 301 can move synchronously in the horizontal direction.

With the above structure, the fluid entering from the pressure chamber 101 can enter the elastic barrel 109 from the seepage channel 208 of the seepage plug 204. The fluid in the pressure chamber 101 can provide radial force to the elastic barrel 109 through the displacement control mechanism 103. The fluid entering the elastic barrel 109 can provide axial force on the rock. The temperature control mechanism 6 can control the temperature of the fluid in the elastic barrel 109 according to the temperature sensor, thereby constructing a high-temperature and high-pressure structure of the rock. Moreover, the infrared measuring mechanism 3 can also measure the rocks in the elastic barrel 109 .

Referring to FIGS. 4 and 5 , specifically, the pressure kettle 1 includes a pressure chamber 101 and a test chamber 102 . Pressure chamber 101 has a top wall and a bottom wall. The top wall of the pressure chamber 101 is connected to the upper cover 203 through a flange. The bottom wall of the pressure chamber 101 can be connected to the inclination angle control mechanism 5 through a flange. It includes an inclination angle control device that can rotate the pressure kettle 1 so that the pressure kettle 1 forms an angle relative to the horizontal plane. Specifically, the tilt angle control mechanism 5 includes a flange connection seat 51, a console base 52, a support rod 53, a hydraulic drive device 54 (for example, a jack), a screw 55, and a hydraulic control box 56. The hydraulic control box 56 can control The hydraulic drive device 54 controls its expansion or contraction. The flange connection seat 51 is fixedly installed on the pressure chamber 101 . One end of the support rod 53 is fixedly mounted on the console base 52 , and the other end of the support rod 53 is hingedly connected to the flange connection seat 51 . The hydraulic drive device 54 can cause the flange connection seat 51 to drive the pressure chamber 101 to rotate relative to the support rod 53 to form an angle with the horizontal plane. The screw 55 is provided between the flange connection seat 51 and the console base 52, and is used to fix the pressure chamber 101 when the hydraulic drive device 54 moves to a predetermined position. A liquid guide plug 107 communicating with the pressure chamber 101 is also provided on the bottom wall of the pressure chamber 101 .

The test chamber 102 is located in the pressure chamber 101 . The test chamber 102 includes a rigid barrel 108 on the outside (e.g., made of a steel structure) and an elastic barrel 109 on the inside (e.g., made of a highly deformable metal). Among them, the rigid barrel 108 is fixed on the bottom wall of the pressure chamber 101 through pins. The elastic barrel 109 can deform in the radial direction.

A flow guide plug 104 is provided at the lower part of the elastic barrel 109 . Rocks can be placed on the diversion plug 104 and located within the elastic barrel 109 . A flow guide tube connected with the elastic barrel 109 is provided on the flow guide plug 104 and the bottom wall. The guide tube can discharge the fluid in the elastic barrel 109 .

Referring to Figure 1, the displacement control mechanism 103 can move in the radial direction relative to the rigid barrel 108. One end of the displacement control mechanism 103 is located in the pressure chamber 101, and the other end of the displacement control mechanism 103 is provided on the elastic barrel 109. The fluid located in the pressure chamber 101 can exert a radial force on the elastic barrel 109 through the displacement control mechanism 103, thereby causing the elastic barrel 109 to deform in the radial direction. The displacement control mechanism 103 also includes a displacement sensor capable of detecting the deformation amount of the elastic barrel 109 along the radial direction.

Referring to Figures 2 and 3, the axial thrust mechanism 2 includes an axial loading device 201 and a thrust rod that can be transmission connected with the axial loading device 201 and penetrated on the upper cover 203. One end of the thrust rod located in the pressure kettle 1 is fixedly provided with a sealing cover plate 207 that seals with the upper cover 203 . The flow guide mechanism includes a seepage plug 204 and a seepage interface 206 . The seepage plug 204 is connected to the seepage interface 206 through bolts, and the seepage interface 206 is fixed on the sealing cover 207 through bolts. The thrust rod is provided with a sealing device 202 that can seal the upper cover 203.

The seepage interface 206 can be sealed with the upper part of the pressure chamber 101, and the seepage plug 204 can be sealed with the upper part of the elastic barrel 109. The seepage interface 206 is provided with a plurality of guide grooves arranged in the circumferential direction on its side facing the rock, and each of the guide grooves is connected to the seepage channel 208 . The seepage channel 208 is connected to the inner cavity of the elastic barrel 109 , and the flow guide groove is connected to the pressure chamber 101 . The thrust rod of the axial thrust mechanism 2 can move relative to the pressure kettle 1 so that the pressure chamber 101 and the elastic barrel 109 are connected.

Referring to FIG. 1 , in this embodiment, the temperature control mechanism 6 may include a heater 110 extending upward from the flow guide plug 104 , a temperature sensor, a temperature display, a signal output interface 303 , a resistance control valve, etc. . The temperature of the fluid inside the elastic barrel 109 can be controlled by adjusting the resistance control valve. The temperature control mechanism 6 in the embodiment of the present application also includes a temperature sensor installed in the seepage channel 208 of the axial thrust mechanism 2 . The control unit 7 is connected to the signal output interface 303 and the temperature display respectively, controls the position of the resistance control valve, adjusts the size of the heating resistor, stores temperature data, and displays the current temperature value.

In this embodiment, the seepage plug 204 is provided with a protective cover 209 on its side away from the rock, and the protective cover 209 is provided outside the infrared measurement mechanism 3 . A chamber is formed between the flow guide plug 104 and the bottom wall, and the infrared measurement mechanism 3 is disposed in the chamber.

Referring to FIG. 1 , the first probe 106 is disposed on the lower side of the first light-transmitting part 105 . The second probe 301 is provided on the upper side of the second light-transmitting part 205 . Among them, the first probe 106 and the second probe 301 are arranged correspondingly along the longitudinal direction. In this embodiment, there are four first probes 106 and four second probes 301 respectively. Of course, in other optional implementations, the number of the first probe 106 and the second probe 301 may be other corresponding ones.

Referring to Figures 6 and 7, the infrared measurement mechanism 3 also includes a guide mechanism 4. The guide mechanism 4 includes a guide rail 402 and a probe clamping mechanism 403 movably disposed on the guide rail 402 along the extension direction of the guide rail 402. , a motor 404 with an output shaft, the probe clamping mechanism 403 can clamp the first probe 106 or the second probe 301, the output shaft of the motor 404 and the probe clamping mechanism 403 can mesh through the gear transmission mechanism 405, thereby driving the first probe 106 or the second probe 301. The probe 106 or the second probe 301 moves along the guide rail 402 . Preferably, each of the guide rails 402 can be arranged on an annular support 401.

The embodiment of the present application also includes a control unit 7 , which is used to control the axial thrust mechanism 2 , the displacement control mechanism 103 , the temperature control mechanism 6 , and the infrared measurement mechanism 3 . Specifically, the control unit 7 includes a signal receiving and conversion module, a computer, and processing software, which can implement measurement and control of temperature, pressure, displacement, infrared probe, and inclination during the test process.

The purpose of the present invention and solving its technical problems can be further achieved by adopting the following technical measures.

Among them, the test probe radial displacement control device is divided into the rock mechanics pressure chamber 101 and the axial thrust mechanism 2. The gear transmission system in the test probe radial displacement control device undergoes synchronous displacement. Each test probe radial displacement control device Install 4 (not limited to 4) infrared probes on it.

Among them, the entire test device is a sealed container, and the medium in the liquid storage tank is not limited to water.

The present invention is achieved through the following technical solutions:

A method for testing the collapse pressure of rocks under different temperature changes. The steps are:

Step 1: The wellbore rock is made into a ring shape according to the installation dimensions of the test chamber 102, and installed inside the test chamber 102. The bottom end of the test chamber 102 is equipped with a glass bottom plate, a seepage plug 204, a test probe radial displacement control device, and an infrared ray. Receiving probe and heating system; the lower end of the axial thrust mechanism 2 is equipped with a seepage plug 204 and a glass cover. The infrared transmitting probe radial displacement control device, the infrared transmitting probe and the temperature test probe are fixed on the glass cover and the upper cover 203. In the sealed area; the test probe radial displacement control device can realize the movement of the infrared test probe along the radial direction of the rock pressure chamber 101, and the test probe radial displacement control device and the infrared test pressure head are connected through bolts; the axial thrust mechanism 2 can exert an axial thrust and generate axial displacement; the test chamber 102 is made of expansion material, which can transmit the liquid pressure of the pressure chamber 101 and generate axial pressure on the test chamber 102; the sealing base of the rock mechanics experimental machine is installed on the inclination console through a flange to achieve Testing requirements for different wellbore inclination angles;

Step 2: Adjust the positions of the infrared transmitting probe and the receiving probe so that the infrared beam emitted by the infrared transmitting probe can be close to the inner wall of the wellbore rock without being blocked, and the infrared receiving probe can clearly receive the signal;

Step 3: Adjust the inclination angle of the inclination console; adjust the temperature testing and control device, heat the liquid in the liquid storage tank to the predetermined temperature value, and record the radial position X1 displayed by the radial displacement control device of the test probe;

Step 4: The wellbore rock is pressurized, and the liquid is pumped into the liquid guide plug 107 through the liquid inlet pump to increase the pressure in the pressure chamber 101 to a predetermined pressure. When the temperature test probe in the upper cover 203 reaches a stable temperature, record The radial position X2 displayed by the test probe radial displacement control device;

Step 5: Adjust the built-in heater 110 inside the pressure chamber 101 of the rock mechanics experimental machine to heat the internal medium so that the temperature in the test chamber 102 reaches the predetermined temperature T1. During the entire process, the infrared emission probe is excited at intervals of the time excitation period T, and the temperature rises. The diameter of the high-hole rock shrinks, and the infrared receiving probe is blocked and has no signal. The radial displacement control device of the test probe in the upper and lower cavity sealing heads automatically adjusts synchronously and moves toward the center of the wellbore. Each movement has a displacement ΔS. After I movement, the infrared receiving probe receives the infrared signal, stops moving, and records the displacement S1 = I·ΔS; continues heating, and also records the displacements S2, S3,..., SN.

The test steps provided in this example are as follows:

(1) Make the wellbore rock into an annular structure of the wellbore according to the test requirements, and place it into the rock pressure chamber 101.

(2) Adjust the tilt angle console to set a fixed tilt angle.

(3) Adjust the heating furnace, heat the medium in the liquid outlet pipe to the set temperature, and open the confining pressure liquid inlet system.

(4) Adjust the position of the infrared probe on the radial displacement control device of the test probe through the synchronous data acquisition and processing system to ensure that the infrared rays are not blocked by the rock side wall and are close to the rock side wall, and record the probe position.

(5) Pressurize.

(6) Similarly, adjust the position of the infrared probe to ensure that the infrared rays are not blocked by the rock side wall and are close to the rock side wall, and record the probe position.

(7) Heating.

(8) Similarly, adjust the position of the infrared probe to ensure that the infrared rays are not blocked by the rock side wall and are close to the rock side wall, and record the probe position.

(9) After the experiment, drain the oil.

(10) Open the triaxial chamber, take the device out of the test bench, and drain the engineering liquid.

Referring to Figure 8, the advantages of the present invention are: to make up for the shortcomings of the existing rock mechanical properties testing device that cannot measure the impact of rock temperature changes on strength, to fill the gap in wellbore collapse pressure testing, and to innovatively develop a method to test the strength of rocks under different temperature changes. Collapse pressure testing device, tests the effect of temperature on the strength of high-pressure rock, especially the impact on the collapse pressure of rocks around the wellbore, and then predicts and evaluates the strength of downhole well walls, providing predictions for well wall stability in oil and gas deep wells, ultra-deep wells and high-temperature wells Guidance basis. This technology can monitor the mechanics and displacement information in uniaxial rock loading tests, rock triaxial mechanical tests, rock creep mechanical tests, rock temperature change stress loading tests and other tests around the wellbore.

The invention can be applied to the synchronous monitoring of rock collapse pressure under a constant temperature state, and is also suitable for the synchronous measurement of the collapse pressure of rocks around the drilling wellbore under different temperature and pressure environments. It is also suitable for different well types (vertical wells, horizontal wells, directional wells). ) Simultaneous measurement of the collapse pressure of the rocks around the wellbore under different temperature and pressure environments can solve the problem of stability prediction of the drilling wellbore under high temperature and high pressure conditions.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit and essence of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A wellbore collapse pressure testing device, characterized in that it includes: Pressure kettle, the pressure kettle includes a pressure chamber and a test chamber, the test chamber includes a rigid barrel located in the pressure chamber and an elastic barrel located in the rigid barrel and capable of deforming in the radial direction; A diversion plug, the diversion plug is arranged at the lower part of the elastic barrel for rock accommodation, and the diversion plug has a first light-transmitting part; An axial thrust mechanism is located on the upper side of the rock relative to the diversion plug. The axial thrust mechanism can move relative to the pressure kettle. The axial thrust mechanism is located at one end of the pressure kettle. A flow guide mechanism capable of engaging with the pressure chamber and the test chamber is provided. The flow guide mechanism includes a guide mechanism that can connect the pressure chamber and the elastic barrel when it is joined with the pressure chamber and the test chamber. There are seepage channels connected between them, and the flow guide mechanism has a second light-transmitting part; A displacement control mechanism that can move in a radial direction relative to the rigid barrel, one end of the displacement control mechanism is located in the pressure chamber, and the other end of the displacement control mechanism is provided on the elastic barrel; A temperature control mechanism, the temperature control mechanism is used to control the temperature in the elastic barrel; Infrared measurement mechanism, the infrared measurement mechanism includes a first probe disposed on the lower side of the first translucent part and a second probe disposed on the upper side of the second translucent part and longitudinally corresponding to the first probe. , the first probe and the second probe can move synchronously in the horizontal direction; An inclination angle control device can rotate the pressure kettle so that the pressure kettle forms an angle relative to the horizontal plane. 2. The wellbore collapse pressure testing device according to claim 1, wherein the pressure kettle includes an upper cover, and the axial thrust mechanism includes an axial loading device and can be transmission connected with the axial loading device. and penetrates a thrust rod on the upper cover. One end of the thrust rod located in the pressure kettle is fixedly provided with a sealing cover plate that seals with the upper cover. The flow guide mechanism includes a sealing cover that can communicate with the elastic The barrel is matched with a seepage plug with a seepage channel and a seepage interface provided on the seepage plug. The guide groove of the seepage interface is connected to the seepage channel of the seepage plug. The seepage channel is connected to the inside of the elastic barrel. The cavity is connected, and the guide groove is connected with the pressure chamber. 3. The wellbore collapse pressure testing device according to claim 1, wherein the axial thrust mechanism includes a seepage plug, and a protective cover is provided on the side of the seepage plug away from the rock, and the A protective cover is provided outside the second probe. 4. The wellbore collapse pressure testing device according to claim 1, characterized in that the pressure chamber has a bottom wall, and a liquid guide plug connected to the pressure chamber and a guide tube are provided on the bottom wall. perforated on the bottom wall. 5. The wellbore collapse pressure testing device according to claim 1, wherein the temperature control mechanism includes a heater extending upward from the flow guide plug. 6. The wellbore collapse pressure testing device according to claim 4, characterized in that there is a sealed chamber between the flow guide plug and the bottom wall, and the first probe is arranged in the sealed chamber. . 7. The wellbore collapse pressure testing device according to claim 1, wherein the axial thrust mechanism includes a seepage interface, and the seepage interface is provided with a plurality of devices arranged in the circumferential direction on its side facing the rock. diversion grooves, each of the diversion grooves is connected to the seepage channel. 8. The wellbore collapse pressure testing device according to claim 1, characterized by comprising a control unit used to control the axial thrust mechanism, displacement control mechanism, temperature control mechanism and infrared measurement mechanism. 9. The wellbore collapse pressure testing device according to claim 2, wherein the second light-transmitting part is located radially between the seepage plug and the seepage interface.