Shale gas reservoir carbon isotope measuring device

Abstract

The invention belongs to the technical field of petroleum geology testing, and particularly relates to a shale gas reservoir carbon isotope measuring device which comprises a mounting frame, the left side wall of the mounting frame is fixedly connected with a PLC and an operation panel, the upper side wall of the mounting frame is connected with a detection cylinder, the left side wall of the detection cylinder is fixedly communicated with a breather pipe, and the breather pipe is fixedly communicated with a gas inlet pipe. The side wall of the breather pipe communicates with two connecting pipes, and the connecting pipe located on the upper side communicates with an external inert gas conveying assembly. After shale gas reservoir sample detection is completed, the measuring device can automatically recover waste samples, new samples prepared in advance are loaded into the device, a new round of detection process is rapidly started, a large amount of air is prevented from rushing into the device to a great extent, residual interference gas can be effectively discharged only by conveying a small amount of inert gas, and the detection efficiency is improved. Meanwhile, excessive loss of heat in the device is effectively restrained through the design, energy consumption is remarkably reduced, and resource waste is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum geological testing, and in particular relates to a shale gas reservoir carbon isotope measuring device. Background Art

[0002] Shale gas is an unconventional natural gas resource that exists in nanopores and cracks in shale formations. It has become a hot spot in the world's oil and gas exploration field. my country's shale gas exploration is mainly concentrated in the Sichuan Basin. Shale gas mainly exists in marine shales of the Paleozoic Era. Although shales of continental and marine-continental transitional phases are also produced, the scale of resources is relatively small. Shale gas in the Sichuan Basin is mainly concentrated in the Longmaxi Formation of the Silurian System and the Niutitang Formation of the Lower Cambrian System. Shale gas is dry gas with a methane content of more than 95% and a high degree of kerogen evolution. Carbon isotope testing technology is an important technology for petroleum geological testing. For example, a shale gas reservoir carbon isotope measurement device and measurement method are proposed in patent announcement number CN118425058A.

[0003] When the existing measuring device is in operation, the operator must first place the sample to be tested inside the device, and then supply inert gas into the device to drive away the interfering gas in the device. Since shale gas exploration and development work involves analyzing the causes of shale gas, evaluating shale gas resources, and guiding the drilling of horizontal wells, the measuring device must conduct tests on samples at different depths in turn. Every time the operator opens the device to change the sample, a large amount of air will flow into the device. In this way, not only must the inert gas be supplied again to re-create the environment, but the heat in the device will also be dissipated. Subsequently, a large amount of energy will be consumed to reheat the device. The whole process results in a very significant waste of resources.

[0004] Therefore, a shale gas reservoir carbon isotope measurement device is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a shale gas reservoir carbon isotope measurement device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a shale gas reservoir carbon isotope measuring device, comprising a mounting frame, the left side wall of the mounting frame is fixedly connected to a PLC controller and an operation panel, the upper side wall of the mounting frame is connected to a detection cylinder, the left side wall of the detection cylinder is fixedly connected to a ventilation pipe, the side wall of the ventilation pipe is connected to two connecting pipes, the connecting pipe located on the upper side is connected to an external inert gas delivery component, and the connecting pipe located on the lower side is connected to an external oxygen delivery component, the inner wall of the mounting frame is fixedly connected to a placement plate, the upper side wall of the placement plate is fixedly connected to an isotope spectrometer, the detection end of the isotope spectrometer is connected to the detection cylinder, and also includes: A material supply assembly, arranged on the upper side wall of the mounting frame, for conveying sample raw materials into the detection cylinder; A processing component, disposed inside the detection cylinder, for processing sample raw materials; A recovery component, arranged on the upper side wall of the placement plate, for recovering discarded samples; The display assembly is arranged on the upper side wall of the mounting frame and is used to display the detection results of the isotope spectrometer.

[0007] Preferably, the feeding assembly includes a screw linear module, which is fixedly connected to the upper side wall of the mounting frame through a bracket, the moving end of the screw linear module is fixedly connected to a moving rod, the front side wall of the moving rod is fixedly connected to a plurality of connecting cylinders, the front end of the connecting cylinder is fixedly connected to a feeding cylinder, the upper side wall of the connecting cylinder is fixedly connected to an exhaust pipe, an exhaust valve and a gas detection sensor are provided in the exhaust pipe, the rear inner wall of the feeding cylinder is connected to a mesh plate through a transverse electric push rod, a sample is placed in front of the mesh plate, the left and right sides of the feeding cylinder are fixedly connected to vertical electric push rods, and the upper ends of the two vertical electric push rods are fixedly connected to the same baffle through a bracket.

[0008] Preferably, the processing assembly includes a rope frame fixedly connected to the inner walls of the front and rear sides of the detection cylinder, the front and rear side walls of the detection cylinder are fixedly connected to a control motor, the output end of the control motor is located in the rope frame and is fixedly connected to a rope wheel, a cable is wound around the outside of the two rope wheels, the lower ends of the two cables pass through the rope cylinder and are fixedly connected to a vertical plate, the side walls of the two vertical plates are rotatably connected to a rotating rod, the two rotating rods are fixedly connected to the same quartz boat at one end, a heating mechanism is provided in the detection cylinder, and the side walls of the two rope frames on the opposite side are fixedly connected to the same crushing drain cylinder, The upper inner wall of the detection cylinder is fixedly connected with a hydraulic cylinder, the movable end of the hydraulic cylinder is fixedly connected with a crushing motor, the output end of the crushing motor is fixedly connected with a crushing head that matches the crushing tube, the rear side wall of the detection cylinder is fixedly plugged with an inclined tube, the lower end of the inclined tube is connected with the side wall of the crushing tube, a control valve is provided in the inclined tube, the upper end of the inclined tube extends out of the detection cylinder and is fixedly connected with a connecting cover, the upper side wall of the connecting cover is fixedly connected with a bent plate, the rear side wall of the bent plate is fixedly connected with two laser receivers, and the upper side wall of the feeding cylinder is fixedly connected with a laser generator.

[0009] Preferably, the recycling assembly includes two recycling motors fixedly connected to the front and rear side walls of the detection cylinder, the output ends of the two recycling motors pass through the detection cylinder and are fixedly connected to a driving shaft, the rod wall fixed sleeve of the driving shaft is provided with a driving gear, the ends of the two rotating rods away from each other are fixedly connected with a flip gear meshing with the driving gear, the upper side wall of the placement plate is connected to a recycling box, the lower end of the detection cylinder is connected to the upper side wall of the recycling box, and a magnetic control valve is provided inside the detection cylinder near the recycling box.

[0010] Preferably, the display components each include two bottom boxes, the two bottom boxes are fixedly connected to the upper side wall of the mounting frame, the two bottom boxes are communicated with the air supply component, the upper side walls of the two bottom boxes are fixedly connected with a plurality of short tubes, and a regulating valve is provided in the short tube, the upper end of the short tube is fixedly connected with a square tube, a piston plate is slidably provided in the square tube, the inner wall of the square tube is fixedly connected with a block located below the piston plate, the upper side wall of the piston plate is fixedly connected with a U-shaped rod, the end of the U-shaped rod away from the piston plate extends out of the square tube and is fixedly connected with a rope drum, the same display rope is inserted in the plurality of rope drums, a scale is provided on the outer side wall of the square tube, an index mark is fixedly connected to the lower side wall of the rope drum, the upper side wall of the piston plate is fixedly connected with a conductive frame, the conductive frame is electrically connected to the PLC controller, the inner wall of the square tube is inlaid with a plurality of conductive plates, the side wall of the piston plate is provided with a positioning groove, and the inner wall of the positioning groove is fixedly connected with a friction plate through a positioning electric push rod.

[0011] Preferably, the air supply assembly includes a fixing plate fixedly connected to the right side wall of the mounting frame, the upper side wall of the fixing plate is fixedly connected with an air supply cylinder, the lower inner wall of the air supply cylinder is connected with a piston seat via a spring, the air supply cylinder and the detection cylinder are fixedly connected with the same air inlet pipe, a first regulating valve is provided in the air inlet pipe, the upper side wall of the air supply cylinder is fixedly connected with a bent pipe, a second regulating valve is provided in the bent pipe, and the bent plate is respectively connected to the two bottom boxes via two air supply pipes.

[0012] Preferably, an air outlet pipe is provided on the air inlet pipe, a third regulating valve is provided in the air outlet pipe, and a discharge pipe is provided on the bent pipe, a fourth regulating valve is provided in the discharge pipe.

[0013] Preferably, an air pressure sensor is connected to the upper side wall of the air supply cylinder, and the air pressure sensor is electrically connected to a PLC controller.

[0014] Compared with the existing technology, the advantages of a shale gas reservoir carbon isotope measurement device are: By setting up the feeding assembly and recovery assembly, after completing the shale gas reservoir sample detection, the measuring device can automatically recover the discarded samples and load the pre-prepared new samples into the device, quickly starting a new round of detection process, which greatly avoids a large amount of air from rushing into the device. Only a small amount of inert gas needs to be delivered to effectively expel the residual interfering gas. At the same time, the design also effectively suppresses the excessive loss of heat inside the device, significantly reduces energy consumption, and avoids waste of resources.

[0015] Through the processing components that are set up, the shale gas reservoir samples can be automatically crushed before being placed in the measuring device for measurement. When the samples are subsequently heated, the heated area of ​​the samples can be increased, shortening the time required for sample heating and improving the working efficiency of the measuring device.

[0016] Through the set display component, after the sample measurement is completed using the measuring device, the measurement results can be displayed intuitively, which is convenient for operators to record the measurement results of samples at different depths, as well as to carry out subsequent work such as analyzing the origin of shale gas, evaluating shale gas resources, and guiding the drilling guidance of horizontal wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a shale gas reservoir carbon isotope measurement device provided by the present invention; Figure 2 It is a structural schematic diagram of a feeding assembly in a shale gas reservoir carbon isotope measuring device provided by the present invention; Figure 3 It is a schematic diagram of the surface structure of a feed cylinder in a shale gas reservoir carbon isotope measurement device provided by the present invention; Figure 4 It is a schematic diagram of the internal structure of a detection tube in a shale gas reservoir carbon isotope measurement device provided by the present invention; Figure 5 It is a schematic diagram of the docking relationship between a connecting cover and a feeding cylinder in a shale gas reservoir carbon isotope measuring device provided by the present invention; Figure 6 It is a schematic diagram of the shape structure of a bent plate in a shale gas reservoir carbon isotope measurement device provided by the present invention; Figure 7 It is a schematic diagram of the internal structure of a square tube in a shale gas reservoir carbon isotope measurement device provided by the present invention; Figure 8 It is a schematic diagram of the internal structure of a piston plate in a shale gas reservoir carbon isotope measuring device provided by the present invention; Fig. 9 It is a schematic diagram of the surface structure of a gas supply cylinder in a shale gas reservoir carbon isotope measurement device provided by the present invention; Fig.10 The present invention provides a schematic diagram of the positional relationship between a gas supply cylinder and a piston seat in a shale gas reservoir carbon isotope measuring device.

[0018] In the figure: 1 mounting frame, 2 PLC controller, 3 operation panel, 4 detection cylinder, 5 ventilation pipe, 6 connecting pipe, 7 placement plate, 8 isotope spectrometer, 9 feeding assembly, 91 screw linear module, 92 moving rod, 10 connecting cylinder, 11 feeding cylinder, 12 exhaust pipe, 13 exhaust valve, 14 gas detection sensor, 15 horizontal electric push rod, 16 mesh plate, 17 vertical electric push rod, 18 baffle, 19 processing assembly, 191 rope frame, 192 control motor, 20 rope wheel, 21 cable, 22 vertical plate, 23 rotating rod, 24 quartz boat, 25 heating mechanism, 26 crushing leak cylinder, 27 hydraulic cylinder, 28 crushing motor, 29 crushing head, 30 inclined tube, 31 control valve, 32 connecting cover, 33 bending plate, 34 laser receiver, 35 laser generator, 36 recovery component, 361 recovery motor, 362 drive shaft, 37 drive gear, 38 flip gear, 39 recovery box, 40 magnetron valve, 41 display component, 411 bottom box, 412 short pipe, 42 regulating valve, 43 square pipe, 44 piston plate, 45 block, 46 U-shaped rod, 47 rope drum, 48 display rope, 49 scale, 50 index mark, 51 conductive frame, 52 conductive plate, 53 positioning electric push rod, 54 friction plate, 55 air supply component, 551 fixed plate, 552 air supply cylinder, 56 piston seat, 57 air inlet pipe, 58 first regulating valve, 59 elbow, 60 second regulating valve, 61 outlet pipe, 62 third regulating valve, 63 discharge pipe, 64 fourth regulating valve, 65 air pressure sensor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 10 As shown, a shale gas reservoir carbon isotope measuring device includes a mounting frame 1, a PLC controller 2 and an operation panel 3 are fixedly connected to the left side wall of the mounting frame 1, a detection cylinder 4 is connected to the upper side wall of the mounting frame 1, a ventilation pipe 5 is fixedly connected to the left side wall of the detection cylinder 4, and two connecting pipes 6 are connected to the side wall of the ventilation pipe 5, the upper connecting pipe 6 is connected to an external inert gas delivery component, and the lower connecting pipe 6 is connected to an external oxygen delivery component, the inner wall of the mounting frame 1 is fixedly connected to a placement plate 7, the upper side wall of the placement plate 7 is fixedly connected to an isotope spectrometer 8, and the detection end of the isotope spectrometer 8 is connected to the detection cylinder 4, and also includes: The feeding assembly 9 is arranged on the upper side wall of the mounting frame 1 and is used to transport the sample raw material into the detection cylinder 4. The feeding assembly 9 includes a screw linear module 91, which is fixedly connected to the upper side wall of the mounting frame 1 through a bracket. The moving end of the screw linear module 91 is fixedly connected to a moving rod 92, and the front side wall of the moving rod 92 is fixedly connected to a plurality of connecting cylinders 10. The front end of the connecting cylinder 10 is fixedly connected to a feeding cylinder 11, and the upper side wall of the connecting cylinder 10 is fixedly connected to an exhaust pipe 12. The exhaust pipe 12 is provided with an exhaust valve 13 and a gas detection sensor 14. The rear inner wall of the feeding cylinder 11 is connected to the upper side wall of the connecting cylinder 10 by a transverse The electric push rod 15 is connected to a mesh plate 16, and a sample is placed in front of the mesh plate 16. The left and right sides of the feeding barrel 11 are fixedly connected with vertical electric push rods 17. The upper ends of the two vertical electric push rods 17 are fixedly connected to the same baffle 18 through a bracket, which can load new samples prepared in advance into the device and quickly start a new round of testing process, which greatly avoids a large amount of air from rushing into the device. Only a small amount of inert gas needs to be delivered to effectively discharge the residual interfering gas. At the same time, this design also effectively suppresses excessive heat loss inside the device, significantly reduces energy consumption, and avoids waste of resources. The processing assembly 19 is arranged inside the detection cylinder 4 and is used for processing the sample raw material. The processing assembly 19 includes a rope frame 191 fixedly connected to the inner walls of the front and rear sides of the detection cylinder 4. The front and rear side walls of the detection cylinder 4 are fixedly connected to a control motor 192. The output end of the control motor 192 is located in the rope frame 191 and is fixedly connected to a rope wheel 20. The two rope wheels 20 are wrapped with a cable 21. The lower ends of the two cables 21 pass through the rope cylinder 47 and are fixedly connected to a vertical plate 22. The side walls of the two vertical plates 22 are rotatably connected to a rotating rod 23. The two rotating rods 23 are fixedly connected to the same quartz boat 24 at one end. A heating mechanism 25 is provided in the detection cylinder 4. The side walls on the opposite side of the two rope frames 191 are fixedly connected to the same crushing tube 26. The upper inner wall of the detection cylinder 4 is fixedly connected to a hydraulic cylinder 27. The moving end of the hydraulic cylinder 27 A pulverizing motor 28 is fixedly connected, and a pulverizing head 29 matching the pulverizing tube 26 is fixedly connected to the output end of the pulverizing motor 28. An inclined tube 30 is fixedly inserted into the rear side wall of the detection tube 4. The lower end of the inclined tube 30 is connected to the side wall of the pulverizing tube 26. A control valve 31 is arranged in the inclined tube 30. The upper end of the inclined tube 30 extends out of the detection tube 4 and is fixedly connected to a connecting cover 32. A bent plate 33 is fixedly connected to the upper side wall of the connecting cover 32. Two laser receivers 34 are fixedly connected to the rear side wall of the bent plate 33. A laser generator 35 is fixedly connected to the upper side wall of the feeding tube 11. Before placing the shale gas reservoir sample into the measuring device for measurement, the sample can be automatically pulverized. When the sample is subsequently heated, the heating area of ​​the sample can be increased, the time required for heating the sample can be shortened, and the working efficiency of the measuring device is improved. The recovery assembly 36 includes two recovery motors 361 fixedly connected to the front and rear side walls of the detection barrel 4. The output ends of the two recovery motors 361 pass through the detection barrel 4 and are fixedly connected to a driving shaft 362. The rod wall fixed sleeve of the driving shaft 362 is provided with a driving gear 37. The ends of the two rotating rods 23 that are away from each other are fixedly connected with a flip gear 38 that meshes with the driving gear 37. The upper side wall of the placement plate 7 is connected to a recovery box 39. The lower end of the detection barrel 4 is connected to the upper side wall of the recovery box 39. A magnetic control valve 40 is provided inside the detection barrel 4 near the recovery box 39. After completing the shale gas reservoir sample detection, the measuring device can automatically recover the discarded sample. The display assembly 41 is arranged on the upper side wall of the mounting frame 1 and is used to display the detection results of the isotope spectrometer 8. The display assembly 41 includes two bottom boxes 411. The two bottom boxes 411 are fixedly connected to the upper side wall of the mounting frame 1. The two bottom boxes 411 are connected to the air supply assembly 55. The upper side walls of the two bottom boxes 411 are fixedly connected with a plurality of short tubes 412, and the short tubes 412 are provided with regulating valves 42. The upper ends of the short tubes 412 are fixedly connected with square tubes 43. A piston plate 44 is slidably arranged in the square tube 43. The inner wall of the square tube 43 is fixedly connected with a stopper 45 located below the piston plate 44. The upper side wall of the piston plate 44 is fixedly connected with a U-shaped rod 46. The end of the U-shaped rod 46 away from the piston plate 44 extends out of the square tube 43 and is fixedly connected with a rope drum 47. The same display rope 48 is inserted into multiple rope drums 47, a scale 49 is provided on the outer wall of the square tube 43, a guide mark 50 is fixedly connected to the lower side wall of the rope drum 47, a conductive frame 51 is fixedly connected to the upper side wall of the piston plate 44, the conductive frame 51 is electrically connected to the PLC controller 2, and multiple conductive plates 52 are inlaid on the inner wall of the square tube 43. A positioning groove is provided on the side wall of the piston plate 44, and a friction plate 54 is fixedly connected to the inner wall of the positioning groove through a positioning electric push rod 53. After the sample is measured using the measuring device, the measurement results can be displayed intuitively, which is convenient for the operator to record the results of the measurement of samples at different depths, as well as to carry out subsequent work such as analyzing the origin of shale gas, evaluating the amount of shale gas resources, and guiding the drilling guidance of horizontal wells.

[0021] The air supply assembly 55 includes a fixed plate 551 fixedly connected to the right side wall of the mounting frame 1, the upper side wall of the fixed plate 551 is fixedly connected with an air supply cylinder 552, the lower inner wall of the air supply cylinder 552 is connected with a piston seat 56 through a spring, the air supply cylinder 552 and the detection cylinder 4 are fixedly connected with the same air inlet pipe 57, the air inlet pipe 57 is provided with a first regulating valve 58, the upper side wall of the air supply cylinder 552 is fixedly connected with a bent pipe 59, the bent pipe 59 is provided with a second regulating valve 60, the bent plate 33 is connected to the two bottom boxes 411 respectively through two air supply pipes, and can transport gas to the two bottom boxes 411.

[0022] The air inlet pipe 57 is provided with an air outlet pipe 61 , in which a third regulating valve 62 is arranged. The bent pipe 59 is provided with a discharge pipe 63 , in which a fourth regulating valve 64 is arranged, so as to discharge the gas inside the detection tube 4 and the square tube 43 .

[0023] An air pressure sensor 65 is connected to the upper side wall of the air supply cylinder 552 . The air pressure sensor 65 is electrically connected to the PLC controller 2 and can detect the air pressure inside the air supply cylinder 552 .

[0024] The operating principle of the present invention is now described as follows: the operator places samples of the same amount into multiple feeding barrels 11 respectively, and then the operator transmits an electrical signal to the PLC controller 2 through the operation panel 3. After receiving the electrical signal, the PLC controller 2 will control multiple vertical electric push rods 17 to work, and the vertical electric push rods 17 drive the baffle 18 to move downward, so as to block the feeding barrel 11. Then the PLC controller 2 controls the screw linear module 91 to work, and the screw linear module 91 drives multiple feeding barrels 11 to move to the right at the same time through the moving rod 92. The laser generator 35 on the surface of the rightmost feeding barrel 11 will be aligned with the laser receiver 34 on the left during the process of moving to the right, and the laser signal emitted by the laser generator 35 will be received by the laser receiver 34 on the left, and the laser receiver 34 on the left will pass through the PLC controller 2. The LC controller 2 controls the vertical electric push rods 17 on the left and right sides of the rightmost feeding barrel 11 to drive the baffle 18 on that side to move upward immediately, so that the feeding barrel 11 opens. When the screw linear module 91 drives the rightmost feeding barrel 11 to align with the connecting cover 32, the laser signal emitted by the laser generator 35 will be received by the laser receiver 34 on the right, and the laser receiver 34 on the right will control the screw linear module 91 to stop working immediately through the PLC controller 2, so that the connecting cover 32 and the feeding barrel 11 are aligned. Then the PLC controller 2 will control the horizontal electric push rod 15 to work and open the control valve 31. The horizontal electric push rod 15 pushes the rightmost sample to move through the mesh plate 16, so that the sample slides through the connecting cover 32 and the inclined tube 30 to the crushing tube 26 for storage. Different samples can be placed in the detection tube 4 in the same way later. Then the PLC controller 2 adjusts the control valve 31 to close, and controls the external inert gas delivery component to work, and delivers the inert gas to the detection cylinder 4 through the upper connecting pipe 6 and the ventilation pipe 5. The inert gas will deliver the interference gas in the detection cylinder 4 to the gas supply cylinder 552 through the air inlet pipe 57 for storage. The gas will push the piston seat 56 to overcome the elastic force of the spring below and move downward. The air pressure sensor 65 detects that the internal air pressure of the gas supply cylinder 552 reaches the set threshold (two standard large gases, enough to support all the piston plates 44 to move upward to the highest point). The air pressure sensor 65 will control the first regulating valve 58 to close (the first regulating valve 58 is initially in the open state) through the PLC controller 2, and control the third regulating valve 62 to open, so that the gas passes through the outlet. The gas is discharged through the air pipe 61. After the exhaust operation is performed for one minute, the other gases in the detection tube 4 will be completely cleared out (by setting the air delivery speed of the external inert gas delivery component, the other gases in the detection tube 4 can be completely discharged within one minute). After the external inert gas delivery component has worked for one minute, the PLC controller 2 will control the third regulating valve 62 to close, and control the exhaust valve 13 to open, so that the remaining other gases in the feed tube 11, the inclined tube 30 and the feed tube 11 are discharged through the exhaust pipe 12. After the set gas detection sensor 14 detects that there is no other gas discharged from the exhaust pipe 12, the gas detection sensor 14 will control the exhaust valve 13 to close through the PLC controller 2, so as to optimize the measurement environment in the detection tube 4. Next, the PLC controller 2 controls the hydraulic cylinder 27 to drive the crushing head 29 to move downward, and controls the crushing motor 28 to drive the crushing head 29 to rotate slowly, and uses the crushing head 29 to crush the sample into a suitable size, and the sample falls into the quartz boat 24 through the crushing tube 26. After the crushing is carried out for thirty seconds, the sample has been completely crushed and falls into the quartz boat 24. The PLC controller 2 will drive the control motor 192 to drive the pulley 20 to rotate, so that the cable 21 on the surface of the pulley 20 is lowered. After the control motor 192 works for two seconds, the quartz boat 24 will move to the heating mechanism 25. The PLC controller 2 first controls the heating device to preheat the sample for two minutes at a temperature lower than the complete decomposition temperature of the kerogen. After preheating for two minutes , the PLC controller 2 will control the heating device to heat the sample for the first time at a temperature greater than the complete decomposition temperature of the kerogen and less than the starting decomposition temperature of the carbonate, and during the heating process, the external oxygen delivery component will deliver a certain amount of oxygen to the detection tube 4 to promote the oxidation reaction of the sample. The kerogen carbon isotope value in the sample can be detected by the isotope spectrometer 8. When the isotope spectrometer 8 cannot detect the carbon isotope, it means that the kerogen carbon isotope in the sample has been completely decomposed. The value detected by the isotope spectrometer 8 at this time is the kerogen carbon isotope value. The isotope spectrometer 8 will control the frontmost regulating valve 42 on the right bottom box 411 to open according to the detection result, and at the same time, control the frontmost regulating valve 42 on the right bottom box 411 to open. The corresponding conductive plate 52 in the front square tube 43 is electrically connected to the external power supply. When the regulating valve 42 is opened, the gas in the air supply cylinder 552 will be transported to the frontmost square tube 43 through the bent pipe 59 (the second regulating valve 60 is in the open state at this time), the air supply pipe and the bottom box 411 on the right side under the push of the piston seat 56 below and the spring force, so that the piston plate 44 in the square tube 43 moves upward under the action of air pressure. In the process of moving upward, the piston plate 44 will drive the conductive frame 51 to move together. When the conductive frame 51 contacts the corresponding conductive plate 52, the conductive frame 51 is electrically connected to the PLC controller 2, and the external current signal will be transmitted to the PLC controller 2, and the PLC controller 2 will control the second regulating valve 6 0 is closed (the second regulating valve 60 will be opened again when gas delivery is required next time), and at the same time, the positioning electric push rod 53 will be controlled to work, and the positioning electric push rod 53 will drive the friction plate 54 to contact the inner wall of the square tube 43, and the position of the piston plate 44 is fixed by the friction force between the friction plate 54 and the inner wall of the square tube 43, and the piston plate 44 will drive the rope drum 47, the display rope 48 and the index mark 50 to move upward to the set position through the U-shaped rod 46 during the upward movement of the piston plate 44, and the approximate kerogen carbon isotope value inside the sample can be indicated on the scale 49 on the surface of the square tube 43 through the index mark 50 (the precise value of the kerogen carbon isotope value in the sample will be displayed on the display screen of the isotope spectrometer 8); After the first heating is completed, the PLC controller 2 controls the heating mechanism 25 to perform heating at a temperature greater than the complete decomposition temperature of the carbonate. The value detected by the subsequent isotope spectrometer 8 is the carbon isotope value of the carbonate in the sample. Referring to the above principle, the carbon isotope value of the carbonate in the sample can be displayed through the rightmost square tube 43 on the rear bottom box 411 (the detailed value is still displayed on the display screen on the isotope spectrometer 8). Subsequently, the detection value can be roughly displayed with different square tubes 43 according to the different depths of the sample. At the same time, by positioning the height of the display rope 48, the kerogen carbon isotope value and the carbonate carbon isotope value in the sample can be displayed in the form of a broken line, so that the operator can intuitively see the difference between the kerogen carbon isotope value and the carbonate carbon isotope value in samples of different depths, so as to facilitate the subsequent analysis of shale gas genesis, evaluation of shale gas resources, and guidance of horizontal well drilling guidance and other aspects of work. When the sample detection in the quartz boat 24 is completed, the PLC controller 2 will control the quartz boat 24 to continue to move downward to the set distance by controlling the control motors 192 on both sides, so that the flip gears 38 on both sides fall onto the surfaces of the driving gears 37 on both sides. Then the PLC controller 2 controls the recovery motors 361 on both sides to work. The recovery motor 361 controls the rotating rod 23 and the quartz boat 24 to rotate 360 ​​degrees through the cooperation of the driving gear 37 and the flip gear 38 (because a counterweight block is set under the vertical plate 22, the stability of the quartz boat 24 can be guaranteed during the rotation of the quartz boat 24). The PLC controller 2 will also control the magnetic control valve 40 to open, so that the waste on the surface of the quartz boat 24 falls into the recovery box 39 for storage, and the waste can be recycled.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shale gas reservoir carbon isotope measuring device, comprising a mounting frame (1), the left side wall of the mounting frame (1) being fixedly connected to a PLC controller (2) and an operation panel (3), the upper side wall of the mounting frame (1) being connected to a detection cylinder (4), the left side wall of the detection cylinder (4) being fixedly connected to a ventilation pipe (5), the side wall of the ventilation pipe (5) being connected to two connecting pipes (6), the connecting pipe (6) located on the upper side being connected to an external inert gas delivery component, and the connecting pipe (6) located on the lower side being connected to an external oxygen delivery component, the inner wall of the mounting frame (1) being fixedly connected to a placement plate (7), the upper side wall of the placement plate (7) being fixedly connected to an isotope spectrometer (8), the detection end of the isotope spectrometer (8) being connected to the detection cylinder (4), characterized in that: Also includes: A material supply assembly (9), arranged on the upper side wall of the mounting frame (1), and used for conveying sample raw materials into the detection cylinder (4); A processing component (19), arranged inside the detection cylinder (4), and used for processing sample raw materials; A recovery component (36), arranged on the upper side wall of the placement plate (7), and used for recovering discarded samples; A display assembly (41) is arranged on the upper side wall of the mounting frame (1) and is used to display the detection results of the isotope spectrometer (8).

2. A shale gas reservoir carbon isotope measurement device according to claim 1, characterized in that: The feeding assembly (9) comprises a screw linear module (91), wherein the screw linear module (91) is fixedly connected to the upper side wall of the mounting frame (1) via a bracket, the movable end of the screw linear module (91) is fixedly connected to a moving rod (92), the front side wall of the moving rod (92) is fixedly connected to a plurality of connecting cylinders (10), the front end of the connecting cylinder (10) is fixedly connected to a feeding cylinder (11), the upper side wall of the connecting cylinder (10) is fixedly connected to an exhaust pipe (12), an exhaust valve (13) and a gas detection sensor (14) are provided in the exhaust pipe (12), the rear inner wall of the feeding cylinder (11) is connected to a mesh plate (16) via a transverse electric push rod (15), a sample is placed in front of the mesh plate (16), the left and right sides of the feeding cylinder (11) are fixedly connected to vertical electric push rods (17), and the upper ends of the two vertical electric push rods (17) are fixedly connected to the same baffle (18) via a bracket.

3. A shale gas reservoir carbon isotope measurement device according to claim 2, characterized in that: The processing assembly (19) comprises a rope frame (191) fixedly connected to the inner walls of the front and rear sides of the detection cylinder (4); the front and rear side walls of the detection cylinder (4) are fixedly connected to a control motor (192); the output end of the control motor (192) is located in the rope frame (191) and is fixedly connected to a rope wheel (20); a cable (21) is wound around the outside of the two rope wheels (20); the lower ends of the two cables (21) pass through the rope cylinder (47) and are fixedly connected to a vertical plate (22); the side walls of the two vertical plates (22) are rotatably connected to a rotating rod (23); the two rotating rods (23) are fixedly connected to the same quartz boat (24) at one opposite end; a heating mechanism (25) is provided in the detection cylinder (4); the side walls of the two rope frames (191) on the opposite side are fixedly connected to the same crushing drain cylinder (26); A hydraulic cylinder (27) is fixedly connected to the inner wall of the upper side of the detection cylinder (4); a pulverizing motor (28) is fixedly connected to the movable end of the hydraulic cylinder (27); a pulverizing head (29) matching the pulverizing funnel (26) is fixedly connected to the output end of the pulverizing motor (28); an inclined tube (30) is fixedly inserted into the rear side wall of the detection cylinder (4); the lower end of the inclined tube (30) is connected to the side wall of the pulverizing funnel (26); a control valve (31) is provided in the inclined tube (30); the upper end of the inclined tube (30) extends out of the detection cylinder (4) and is fixedly connected to a connecting cover (32); a bent plate (33) is fixedly connected to the upper side wall of the connecting cover (32); two laser receivers (34) are fixedly connected to the rear side wall of the bent plate (33); and a laser generator (35) is fixedly connected to the upper side wall of the feeding cylinder (11).

4. A shale gas reservoir carbon isotope measurement device according to claim 3, characterized in that: The recovery assembly (36) comprises two recovery motors (361) fixedly connected to the front and rear side walls of the detection cylinder (4); the output ends of the two recovery motors (361) pass through the detection cylinder (4) and are fixedly connected to a drive shaft (362); a rod wall fixed sleeve of the drive shaft (362) is provided with a drive gear (37); ends of the two rotating rods (23) that are away from each other are fixedly connected to a flip gear (38) that meshes with the drive gear (37); the upper side wall of the placement plate (7) is connected to a recovery box (39); the lower end of the detection cylinder (4) is connected to the upper side wall of the recovery box (39); and a magnetic control valve (40) is provided inside the detection cylinder (4) close to the recovery box (39).

5. The shale gas reservoir carbon isotope measuring device according to claim 3, characterized in that: The display assembly (41) comprises two bottom boxes (411), the two bottom boxes (411) are fixedly connected to the upper side wall of the mounting frame (1), the two bottom boxes (411) are connected to the air supply assembly (55), the upper side walls of the two bottom boxes (411) are fixedly connected to a plurality of short tubes (412), and the short tubes (412) are provided with regulating valves (42), the upper ends of the short tubes (412) are fixedly connected to a square tube (43), a piston plate (44) is slidably provided in the square tube (43), the inner wall of the square tube (43) is fixedly connected to a stopper (45) located below the piston plate (44), the upper side wall of the piston plate (44) is fixedly connected to a U-shaped rod (46), and the U-shaped One end of the rod (46) away from the piston plate (44) extends out of the square tube (43) and is fixedly connected to a rope drum (47). The same display rope (48) is inserted into a plurality of the rope drums (47). A scale (49) is provided on the outer wall of the square tube (43). A guide mark (50) is fixedly connected to the lower side wall of the rope drum (47). A conductive frame (51) is fixedly connected to the upper side wall of the piston plate (44). The conductive frame (51) is electrically connected to a PLC controller (2). A plurality of conductive plates (52) are inlaid on the inner wall of the square tube (43). A positioning groove is provided on the side wall of the piston plate (44), and a friction plate (54) is fixedly connected to the inner wall of the positioning groove via a positioning electric push rod (53).

6. A shale gas reservoir carbon isotope measurement device according to claim 5, characterized in that: The air supply assembly (55) comprises a fixing plate (551) fixedly connected to the right side wall of the mounting frame (1); an air supply cylinder (552) is fixedly connected to the upper side wall of the fixing plate (551); a piston seat (56) is connected to the lower inner wall of the air supply cylinder (552) via a spring; the air supply cylinder (552) and the detection cylinder (4) are fixedly connected to a same air intake pipe (57); a first regulating valve (58) is provided in the air intake pipe (57); a curved pipe (59) is fixedly connected to the upper side wall of the air supply cylinder (552); a second regulating valve (60) is provided in the curved pipe (59); and the curved plate (33) is respectively connected to two bottom boxes (411) via two air supply pipes.

7. A shale gas reservoir carbon isotope measurement device according to claim 6, characterized in that: The air inlet pipe (57) is provided with an air outlet pipe (61), a third regulating valve (62) is provided in the air outlet pipe (61), and the bent pipe (59) is provided with a discharge pipe (63), a fourth regulating valve (64) is provided in the discharge pipe (63).

8. The shale gas reservoir carbon isotope measuring device according to claim 6, characterized in that: An air pressure sensor (65) is connected to the upper side wall of the air supply cylinder (552), and the air pressure sensor (65) is electrically connected to the PLC controller (2).

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