Gold tube hydrocarbon generation hot-pressing comprehensive simulation experiment device

Abstract

The invention relates to the technical field of oil and gas geochemical experiments, and mainly relates to a gold tube hydrocarbon generation hot-pressing comprehensive simulation experiment device which comprises a gold tube and end tubes inserted into the two ends of the gold tube, outer edge rings are fixed to the outer edges of the end tubes, and the outer sides of the end tubes are attached to the inner side of the gold tube. An abutting rod is inserted into the inner side of the end pipe, a limiting ring abutting against the outer edge ring is fixed to the outer end of the abutting rod, and a sealing groove is formed in the outer side of the abutting rod. And then the abutting rod is matched with the sealing component on the lantern ring to achieve synchronous compaction deformation of the gold pipe and the end pipe, so that traditional flattening operation is replaced, then welding of the annular butt joint position between the gold pipe and the outer edge ring is matched, the welding quality can be effectively guaranteed, meanwhile, extrusion recovery of the deformation position by internal air pressure is avoided, and the welding quality is improved. And the sealing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas geochemical experiments, in particular to a gold tube hydrocarbon generation hot pressure comprehensive simulation experimental device. Background Art

[0002] The gold tube thermal pressure comprehensive simulation experiment of hydrocarbon generation is an important means to study the thermal evolution and hydrocarbon generation process of kerogen. It is mainly used to simulate the hydrocarbon generation evolution law of organic matter in sedimentary basins under temperature and pressure conditions.

[0003] When conducting the experiment, the personnel first crushed the kerogen sample to a specific particle size, then loaded it into a gold tube, and finally sealed both ends of the gold tube, inserted it into the reactor, applied pressure and heated it, and recorded the experimental data accordingly. Among them, when sealing the two ends of the gold tube, the common method is to apply external pressure, use the crimping machine clamp to clamp the open end of the gold tube, causing the tube mouth to deform, and then use welding to weld the flattened part to complete the sealing operation at both ends of the gold tube. During the sealing process, the round tube will become flat due to the squeezing of the clamp, which has a greater impact on the shape. Secondly, the outer end of the flattened part is sealed by welding, and the sample in the gold tube is heated to undergo thermal degradation reaction, which increases the air pressure in the gold tube. There is squeezing on the flattened part, which will cause the weld to crack, affecting the sealing effect, thereby causing errors in the experimental results. Summary of the Invention

[0004] The purpose of the present invention is to provide a comprehensive simulation experimental device for hot pressing of hydrocarbon generation in a gold tube, so as to solve the problem raised in the above-mentioned background technology that when the gold tube is squeezed and sealed, the increased air pressure in the tube causes the compressed part to recover and cause cracks in the weld, resulting in poor sealing effect.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gold tube hydrocarbon generation hot pressure comprehensive simulation experimental device, comprising a gold tube, and also comprising end tubes inserted at both ends of the gold tube, wherein an outer edge ring is fixed at the outer edge of the end tube, the outer side of the end tube is in contact with the inner side of the gold tube, and an abutting rod is inserted into the inner side of the end tube, the outer end of the abutting rod has a limiting ring that abuts against the outer edge ring, and a sealing groove is provided on the outer side of the abutting rod, as well as a sleeve that is sleeved on the outer side of the gold tube, a sealing component that is in contact with the gold tube is installed in the sleeve, and a limiting member is installed on the outer side of the abutting rod, and the limiting member is in contact with the outer side of the sleeve.

[0006] Preferably, the sealing component includes a docking ring fixed to the outer side of the collar, a movable ring is inserted into the inner thread of the docking ring, and an adjustment ring is fixed to the inner side of the movable ring, a movable ring groove is provided in the collar, and a plurality of abutting balls are installed in the movable ring groove, and a chamfer is provided in the adjusting ring near the outer side of the abutting balls, and the plurality of abutting balls are squeezed by the adjusting ring, thereby moving in the movable ring groove.

[0007] Preferably, a groove adapted to the adjustment ring is provided on the movable ring groove.

[0008] Preferably, anti-slip rings are fixed to the outer side of the collar and the outer side of the movable ring.

[0009] Preferably, the limiting member includes a docking plate rotatably docked with the outer side of the abutting rod, two limiting rods are fixed on the docking plate, and the outer ends of the limiting rods are in contact with the outer side of the ring.

[0010] Preferably, the end tube and the gold tube are made of the same material, and the end tube is inserted into the gold tube to obtain an end tube with a thickness consistent with that of the gold tube.

[0011] Preferably, the outer end of the abutting rod is provided with a chamfer, and the outer side of the abutting rod is in contact with the inner side wall of the end tube, and the outer end of the abutting rod is provided with a buffer groove.

[0012] Preferably, a pressure relief component is installed in the abutting rod, and the pressure relief component includes a screw threadedly connected to the abutting rod, and an end cap is fixed to the outer end of the screw, and a pressure relief hole is opened in the end tube.

[0013] Preferably, an abutting column plugged into the pressure relief hole is fixed to the outer end of the screw rod, and a buffer end abutting against the inner side of the end tube is fixed to the outer side of the abutting column.

[0014] Preferably, an annular groove is provided on the outer side of the abutting rod, and the docking plate is slidably plugged into the annular groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention optimizes the sealing method of the gold tube. After the end tubes are butted together, it can better facilitate the loading and compaction of the internal sample. Subsequently, the counter-rods are used to cooperate with the sealing components on the collar to achieve synchronous compaction and deformation of the gold tube and the end tube, thereby replacing the traditional crushing operation. Subsequently, the annular butt joint between the gold tube and the outer ring is welded to effectively ensure the welding quality, while preventing the internal air pressure from squeezing and recovering the deformed part, thereby improving the sealing effect.

[0017] The present invention does not change the cylindrical shape of the gold tube as a whole, and can ensure that the internal sample is pressurized and heated uniformly during the subsequent pressurization and heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a partial cross-sectional rear side view of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the collar and the sealing component after partial cross-section of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the gold tube and end tube after partial cross-section of the present invention;

[0022] Figure 5 A side view of the present invention showing the abutting balls and the outer side of the gold tube in contact with each other;

[0023] Figure 6 It is a side view of the abutting ball and the outer side of the gold tube in the state of extrusion deformation according to the present invention.

[0024] In the figure: 1. Golden tube; 2. End tube; 3. Outer edge ring; 4. Counteracting rod; 5. Limiting ring; 6. Sealing groove; 7. Sleeve ring; 8. Sealing component; 9. Limiting piece; 10. Docking ring; 11. Moving ring; 12. Adjusting ring; 13. Moving ring groove; 14. Counteracting ball; 15. Groove; 16. Anti-slip ring; 17. Docking plate; 18. Limiting rod; 19. Buffer groove; 20. Pressure relief piece; 21. Screw; 22. End cap; 23. Pressure relief hole; 24. Counteracting column; 25. Buffer end; 26. Annular groove. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1 - Figure 6 The figure shows a gold tube hydrocarbon generation hot pressure comprehensive simulation experimental device, comprising a gold tube 1, and end tubes 2 inserted at both ends of the gold tube 1. An outer edge ring 3 is fixed to the outer edge of the end tube 2, and the outer side of the end tube 2 is in contact with the inner side of the gold tube 1. An abutting rod 4 is inserted into the inner side of the end tube 2. The outer end of the abutting rod 4 has a fixed limit ring 5 that abuts against the outer edge ring 3. The outer side of the abutting rod 4 is provided with a sealing groove 6, and a collar 7 is sleeved on the outer side of the gold tube 1. A sealing component 8 is installed in the collar 7 and is in contact with the gold tube 1. There is also a limiter 9 installed on the outer side of the abutting rod 4, and the limiter 9 is in contact with the outer side of the collar 7.

[0027] In this solution, the collar 7 is first placed on the outside of the gold tube 1, and then the end tube 2 is inserted into one end of the gold tube 1, followed by the abutting rod 4. After that, the sealing component 8 is operated to deform and compress the gold tube 1 and the end tube 2, thereby achieving a sealing effect. The end of the gold tube 1 and the outer ring 3 are then welded together to achieve a second sealing operation, thereby enhancing the sealing effect inside the gold tube 1.

[0028] The gold tube 1 and the end tube 2 are made of the same material, both made of pure gold. The end tube 2 is inserted into the gold tube 1 to obtain an end tube 2 with the same thickness as the gold tube 1. The gold material is soft in texture and can deform accordingly when squeezed by the outside world, thereby achieving a better sealing effect.

[0029] For further information, see Figure 1 - Figure 5 The sealing component 8 includes a docking ring 10 fixed to the outer side of the collar 7, a movable ring 11 is inserted into the inner thread of the docking ring 10, an adjusting ring 12 is fixed to the inner side of the movable ring 11, a movable ring groove 13 is provided in the collar 7, a plurality of abutting balls 14 are installed in the movable ring groove 13, and the adjusting ring 12 is chamfered near the outer side of the abutting balls 14. The plurality of abutting balls 14 are squeezed by the adjusting ring 12, thereby moving in the movable ring groove 13. In order to avoid scratches caused by contact between the adjusting ring 12 and the movable ring groove 13 during movement, a groove 15 adapted to the adjusting ring 12 is provided on the movable ring groove 13;

[0030] In order to facilitate the rotation of the moving ring 11 on the sleeve ring 7 , anti-slip rings 16 are fixed on the outer side of the sleeve ring 7 and the outer side of the moving ring 11 .

[0031] In this solution, the principle of using the sealing component 8 to perform the first sealing operation on the gold tube 1 is as follows: first, the personnel insert the collar 7, the end tube 2 and the abutting rod 4 at one end of the gold tube 1 in sequence, and then make the outer ring 3 abut against the end of the gold tube 1, and the limit ring 5 abut against the outer ring 3. After that, the personnel use the limiter 9 to control the position of the collar 7, and then use the rotating anti-slip ring 16 to make the movable ring 11 move in the docking ring 10, thereby squeezing the abutting ball 14 to move in the movable ring groove 13 and squeeze the outer wall of the gold tube 1 until the outer walls of the gold tube 1 and the end tube 2 are as shown. Figure 6As shown, it is concave and fits in the inner part of the limiting ring 5. By squeezing the gold tube 1 and the end tube 2, the gap between the gold tube 1 and the end tube 2 is reduced, and deformation is used to block the flow of gas. Therefore, it can replace the traditional method of squeezing the gold tube 1 into a flat shape with a mold. The extrusion deformation sealing can be performed without changing the cylindrical shape of the gold tube 1. When the gold tube 1 is subsequently heated and pressurized, the heat and pressure distribution is more uniform, which is conducive to the reaction of the internal sample. At the same time, the limiting of the counter-ball 14 and the collar 7 can prevent the deformation of the gold tube 1 and the end tube 2 from returning to a state due to the increase of the internal air pressure of the gold tube 1, thereby further improving the sealing effect.

[0032] For further information, see Figure 1 - Figure 4 , the limiting member 9 includes a docking plate 17 that is rotatably docked with the outer side of the abutting rod 4, and two limiting rods 18 are fixed on the docking plate 17, and the outer ends of the limiting rods 18 are in contact with the outer side of the collar 7;

[0033] In this solution, after the limiting rod 18 abuts against the outer side of the ring 7, the position defect of the ring 7 on the gold tube 1 can be corrected, thereby ensuring that the abutting ball 14 is at the limiting ring 5, so that the subsequent abutting ball 14 can be squeezed toward the gold tube 1 and then fall into the limiting ring 5.

[0034] It should also be noted that in this solution, since the abutting rod 4 is in contact with the inner wall of the end tube 2, the gas in the end tube 2 and the abutting rod 4 will be squeezed during the movement, making it difficult to push in. Therefore, a chamfer is provided at the outer end of the abutting rod 4, and a buffer groove 19 is provided at the outer end of the abutting rod 4 to facilitate pushing the abutting rod 4 into the end tube 2.

[0035] In this proposal, see Figure 4 - Figure 6 , which is another installation method of the limit member 9, wherein an annular groove 26 is opened on the outer side of the abutting rod 4, and the docking plate 17 is slidably plugged into the annular groove 26. The design of the sliding plugging method of the docking plate 17 and the annular groove 26 at the outer end of the abutting rod 4 can make the docking plate 17 detachable. After completing the positioning of the ring 7 and the operation of the sealing component 8, the docking plate 17 can be removed, making the installation of the components at both ends of the gold tube 1 more secure.

[0036] In this solution, the sealing operation process for the gold tube 1 includes the following steps:

[0037] In the first step, the personnel prepared the kerogen sample and cleaned the gold tube 1;

[0038] In the second step, personnel first seal one end of the gold tube 1. When sealing, the collar 7, end tube 2 and abutting rod 4 are sequentially inserted into the one end of the gold tube 1. The collar 7 is positioned with the help of the limiter 9. The sealing component 8 is used to seal the one end of the gold tube 1. Then, the one end of the gold tube 1 is welded to the outer ring 3 at the joint to achieve the second sealing operation.

[0039] The third step is to place the sample into the gold tube 1, then evacuate the tube, and then seal the other end according to step 2.

[0040] In this solution, the gold tube 1 and the end tube 2 are disposable tools. After each experiment, the gold tube 1 and the end tube 2 can be separated by cutting, and then replaced with new gold tubes 1 and end tubes 2. The counter-rod 4 and the sealing components 8 such as the ring 7 designed in this solution can be reused.

[0041] Example 2: Please refer to Figure 4 - Figure 6 This embodiment further explains the first embodiment. The difference lies in that the structure of the offset rod 4 is optimized and a pressure relief part 20 is added to meet the requirement of performing a pressure relief operation before opening the gold tube 1 after the experiment is completed to avoid the escape of residual high-temperature and high-pressure gas inside and causing personal injury.

[0042] Specifically, a pressure relief member 20 is installed in the opposing rod 4. The pressure relief member 20 includes a screw rod 21 threadedly connected to the opposing rod 4. An end cap 22 is fixed to the outer end of the screw rod 21. A pressure relief hole 23 is opened in the end tube 2.

[0043] The outer end of the screw rod 21 is fixed with an abutting column 24 that is plugged into the pressure relief hole 23 , and the outer side of the abutting column 24 is fixed with a buffer end 25 that abuts against the inner side of the end tube 2 .

[0044] In this solution, the screw 21 has a certain length. Observe the counter-rod 4 and utilize the screw 21 to be connected with the thread inside the counter-rod 4 to maintain the sealing performance inside the counter-rod 4, thereby preventing gas from escaping from the pressure relief hole 23 through the joint gap between the screw 21 and the counter-rod 4. Secondly, the designed buffer end 25 has a certain flexibility. When gas is generated in the gold tube 1, the outer wall of the end tube 2 will be squeezed under high pressure in the tube, thereby causing the outer wall of the end tube 2 to be squeezed outward. After the buffer end 25 is squeezed, it will cooperate with the counter-column 24 and the pressure relief hole 23 to make the contact tighter, thereby making the joint sealing stronger and further reducing the escape of gas. After the subsequent reaction is completed and the gold tube 1 is opened, the personnel rotates the end cap 22 to drive the screw 21 back, thereby effectively driving the counter-column 24 out of the pressure relief hole 23. After removing the screw 21, the pressure relief operation is completed. Compared with the traditional method of first destroying the gold tube 1 and cutting a small hole to relieve pressure, it is safer and more stable.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gold tube hydrocarbon generation hot pressing comprehensive simulation experimental device, comprising: Gold tube (1); It is characterized by further comprising: An end tube (2) is provided at both ends of the gold tube (1) for insertion, an outer edge ring (3) is fixed at the outer edge of the end tube (2), the outer side of the end tube (2) is in contact with the inner side of the gold tube (1), an abutting rod (4) is inserted into the inner side of the end tube (2), the outer end of the abutting rod (4) has a limiting ring (5) that abuts against the outer edge ring (3), and a sealing groove (6) is provided on the outer side of the abutting rod (4); and a collar (7) sleeved on the outside of the gold tube (1), wherein a sealing component (8) in contact with the gold tube (1) is installed in the collar (7), and; A limiting member (9) is installed on the outside of the abutting rod (4), and the limiting member (9) is in contact with the outside of the collar (7).

2. The gold tube hydrocarbon generation hot pressing comprehensive simulation experimental device according to claim 1 is characterized by: The sealing component (8) includes a docking ring (10) fixed to the outer side of the collar (7); a movable ring (11) is inserted into the inner thread of the docking ring (10); and an adjusting ring (12) is fixed to the inner side of the movable ring (11); a movable ring groove (13) is provided in the collar (7), and a plurality of abutting balls (14) are installed in the movable ring groove (13); the adjusting ring (12) is provided with a chamfer near the outer side of the abutting balls (14), and the plurality of abutting balls (14) are squeezed by the adjusting ring (12) and move in the movable ring groove (13).

3. The gold tube hydrocarbon generation hot pressure comprehensive simulation experimental device according to claim 2, characterized in that: The movable ring groove (13) is provided with a groove (15) adapted to the adjusting ring (12).

4. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 2, characterized in that: Anti-slip rings (16) are fixed to the outer side of the sleeve ring (7) and the outer side of the moving ring (11).

5. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 1 is characterized by: The limiting member (9) comprises a docking plate (17) rotatably docked with the outer side of the abutting rod (4); two limiting rods (18) are fixed on the docking plate (17); the outer ends of the limiting rods (18) are in contact with the outer side of the collar (7).

6. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 1, characterized in that: The end tube (2) and the gold tube (1) are made of the same material, and the end tube (2) is inserted into the gold tube (1) to obtain an end tube (2) with a thickness consistent with that of the gold tube (1).

7. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 1 is characterized by: The outer end of the abutting rod (4) is provided with a chamfer, and the outer side of the abutting rod (4) is in contact with the inner wall of the end tube (2). The outer end of the abutting rod (4) is provided with a buffer groove (19).

8. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 1 is characterized by: A pressure relief member (20) is installed in the abutting rod (4), and the pressure relief member (20) includes a screw rod (21) threadedly connected to the abutting rod (4), and an end cap (22) is fixed to the outer end of the screw rod (21), and a pressure relief hole (23) is opened in the end tube (2).

9. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 8, characterized in that: The outer end of the screw rod (21) is fixed with an abutting column (24) plugged into the pressure relief hole (23), and the outer side of the abutting column (24) is fixed with a buffer end (25) abutting against the inner side of the end tube (2).

10. The gold tube hydrocarbon generation hot-pressing comprehensive simulation experimental device according to claim 5, characterized in that: An annular groove (26) is provided on the outer side of the abutting rod (4), and the docking plate (17) is slidably plugged into the annular groove (26).

Images