Petroleum sampling device for petroleum exploration

Abstract

The utility model relates to a sampling device, in particular to a petroleum sampling device for petroleum exploration. The petroleum sampling device for petroleum exploration comprises a shell, small air cylinders, a sealing frame and a sampling piston barrel, the small air cylinders which are evenly distributed in the circumferential direction at intervals are installed in the middle of the interior of the shell, and telescopic rods of the small air cylinders are fixedly connected with the sealing frame. And a plurality of sampling piston cylinders which are distributed by taking a circle as a path are mounted in the shell. By arranging a plurality of sampling piston cylinders, a connecting pipe, a sampling pipe, a piston plate and a threaded piston rod, a motor is started, a driving gear is matched with a plurality of driven gears, then the threaded piston rod drives the piston plate to move upwards, petroleum in a hole is sequentially pumped into the sampling pipe and the connecting pipe, and petroleum in the connecting pipe flows into the sampling piston cylinders to be stored; therefore, multiple petroleum samples can be sampled at a time, and the problem that only one petroleum sample can be sampled at present is effectively solved.

Description

Technical Field

[0001] The utility model relates to a sampling device, in particular to a petroleum sampling device for petroleum exploration. Background Art

[0002] Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons. It is a viscous, dark brown liquid with natural occurrence and is called the "blood of industry". Petroleum exploration refers to the process of finding and identifying oil and gas resources by using various exploration methods to understand the underground geological conditions, understand the conditions of oil generation, oil storage, oil and gas migration, accumulation, and preservation, comprehensively evaluate the prospects of oil and gas, determine favorable areas for oil and gas accumulation, find oil and gas closures, and explore the area of ​​oil and gas fields, as well as the conditions of oil and gas strata and production capacity. When drilling an oil exploration well during the oil exploration process, it is necessary to sample the oil for the purpose of detecting the oil.

[0003] The patent with the patent authorization announcement number CN220270913U discloses a petroleum sampling device, including a bottom column and a top column, an oil storage tank is provided at the top end of the bottom column, a screw groove is provided at the bottom end of the top column, the upper thread of the bottom column is engaged in the screw groove, a connecting groove is provided at the upper end of the inner wall of the screw groove, a plurality of oil inlets are provided at the side of the top column, two convex plates are installed at the side of the top column, an electric push rod is installed at the lower end of the convex plate, a plurality of electric push rod output ends are equipped with a retaining ring, the retaining ring is located below the oil inlet, and a connecting piece is rotatably engaged at the upper end of the top column. Although the above patent can control the opening or blocking of the oil inlet by setting the electric push rod and the retaining ring, and reduce the probability of pollutants entering the oil inlet, there are still deficiencies in actual use. For example, in the process of sampling oil, the oil enters the connecting groove from the oil inlet and flows into the oil storage tank, and the sampling device is only provided with an oil storage tank, so only a single oil sample can be sampled, which is difficult to meet the multiple detection requirements of oil.

[0004] Therefore, there is a particular need for an oil sampling device for oil exploration to solve the problems existing in the prior art. Utility Model Content

[0005] In order to overcome the disadvantage that the existing patent has only one oil storage tank, so only a single oil sample can be sampled, which is difficult to meet the multiple detection needs of oil, the technical problem to be solved is: to provide an oil sampling device for oil exploration.

[0006] The utility model is realized by the following technical means: an oil sampling device for oil exploration, comprising a shell, a small cylinder, a sealing frame, a sampling piston barrel, a connecting pipe, a sampling tube, a piston plate, a threaded piston rod, a motor, a driving gear, a driven gear and a threaded sleeve, a plurality of small cylinders evenly spaced and circumferentially distributed are installed in the middle of the shell, a sealing frame is fixedly connected to the telescopic rod of the small cylinder, the sealing frame is completely embedded in the shell, a plurality of sampling piston barrels distributed in a circular path are installed in the shell, a π-shaped connecting pipe is connected to the bottom of the sampling piston barrel, the lower end of the connecting pipe is a telescopic structure, and is connected to the sampling tube, the sampling tube is connected to the sealing frame, a piston plate is slidably connected to the inside of the sampling piston barrel, the edge of the piston plate is in close contact with the inner wall of the sampling piston barrel, and the top of the piston plate rotates A threaded piston rod is connected, which is threadedly connected to the sampling piston cylinder. A motor is installed in the upper part of the shell. A driving gear is fixedly connected to the output shaft of the motor. A plurality of driven gears that are evenly spaced and circumferentially distributed are rotatably connected to the upper part of the shell. The number of driven gears is consistent with that of the threaded piston rod, and the driven gears mesh with the driving gears. A threaded sleeve that is threadedly connected to the threaded piston rod is fixedly connected inside the driven gear. The telescopic rod of the small cylinder is controlled to extend or retract, so that the sealing frame drives the sampling tube to move outward or inward to extend and retract. Then, the output shaft of the motor is controlled to rotate or reverse, so that the driving gear rotates or reverses to mesh with the driven gear in a forward or reverse direction, so that the driven gear drives the threaded sleeve to rotate or reverse, and the threaded piston rod moves up or down.

[0007] As a preferred technical solution of the utility model, the sealing frame and the piston plate are both made of vacuum sealing rubber material.

[0008] As a preferred technical solution of the utility model, it also includes a drill bit, and the bottom of the shell is fixedly connected with the drill bit.

[0009] As a preferred technical solution of the utility model, a filter screen is also included. The lower end of the sampling tube is internally connected with a filter screen for filtering petroleum.

[0010] As a preferred technical solution of the utility model, it also includes a guide rod, a symmetrically distributed guide hole is opened on the piston plate, and guide rods with the same number as the guide holes are fixedly connected inside the shell, and the piston plate is slidably connected to the guide rods through the guide holes.

[0011] As a preferred technical solution of the utility model, a baffle is also included. The top end of the threaded piston rod is fixedly connected with a baffle for limiting the position, and the baffle is in contact with the threaded sleeve.

[0012] From the above description of the structure of the utility model, it can be seen that the design starting point, concept and advantages of the utility model are: 1. By setting multiple sampling piston cylinders, connecting tubes, sampling tubes, piston plates and threaded piston rods, turning on the motor, the driving gear cooperates with multiple driven gears, and then the threaded piston rod drives the piston plate to move upward, and the oil in the hole is successively drawn into the sampling tube and the connecting tube, and the oil in the connecting tube flows into the sampling piston cylinder for storage, so as to achieve one-time sampling of multiple oil samples, effectively solving the problem that only a single oil sample can be sampled.

[0013] 2. By setting a drill bit, the drill bit drills a hole when it contacts the ground of the oil exploration well, so that the oil in the formation flows into the hole in a concentrated manner, which is conducive to the rapid extraction of oil by the sampling tube.

[0014] 3. By setting up a filter, the filter can filter the oil to improve the purity of the oil, which is beneficial to the oil detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a partial cross-sectional view of the shell, sealing frame, small cylinder and other components of the utility model.

[0017] Figure 3 It is a partial cross-sectional view of the sealing frame, sampling tube, sampling piston cylinder and other components of the utility model.

[0018] Figure 4 It is a plan view of the driving gear, the driven gear and the threaded sleeve components of the utility model.

[0019] Figure 5 It is a partial cross-sectional view of the threaded piston rod, driven gear, threaded sleeve and other components of the utility model.

[0020] Among them: 1. drill bit, 2. shell, 3. sealing frame, 4. small cylinder, 5. sampling tube, 51. filter, 6. connecting pipe, 7. sampling piston cylinder, 8. piston plate, 81. guide hole, 9. threaded piston rod, 91. baffle, 10. guide rod, 11. motor, 12. driving gear, 13. driven gear, 14. threaded sleeve. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0022] Embodiment: A petroleum sampling device for oil exploration, see Figure 1-Figure 5As shown, it includes a shell 2, a drill bit 1, a small cylinder 4, a sealing frame 3, a sampling piston cylinder 7, a connecting pipe 6, a sampling tube 5, a filter 51, a piston plate 8, a guide rod 10, a threaded piston rod 9, a baffle 91, a motor 11, a driving gear 12, a driven gear 13 and a threaded sleeve 14. The bottom of the shell 2 is connected to the drill bit 1 by welding, and the middle part of the shell 2 is connected to the small cylinders 4 that are evenly spaced and circumferentially distributed by bolts. The sealing frame 3 is connected to the telescopic rod of the small cylinder 4 by welding. The sealing frame 3 is completely embedded in the shell 2, and the upper, lower, left and right sides are all close to the shell 2, so that the shell 2 is sealed, and the inside of the shell 2 is bolted. The sampling piston cylinder 7 is connected with a plurality of sampling piston cylinders 7 distributed in a circular path. The bottom of the sampling piston cylinder 7 is connected with a π-shaped connecting pipe 6. The lower end of the connecting pipe 6 is a telescopic structure and is connected with a sampling tube 5. The sampling tube 5 is connected to the sealing frame 3, and the bottom end is close to the bottom of the shell 2, so that the sampling tube 5 is blocked by the shell 2. The lower end of the sampling tube 5 is internally connected with a filter screen 51 for filtering oil. The sampling piston cylinder 7 is slidably connected with a piston plate 8. The edge of the piston plate 8 is in close contact with the inner wall of the sampling piston cylinder 7. The sealing frame 3 and the piston plate 8 are both made of vacuum sealing rubber, which has a relatively slow compression stress and can achieve a good sealing effect. The piston plate 8 is provided with a pair of The casing 2 has guide holes 81 distributed therein, and the casing 2 is connected to guide rods 10 with the same number of guide holes 81 by welding. The piston plate 8 is slidably connected to the guide rods 10 through the guide holes 81. The top of the piston plate 8 is rotatably connected to a threaded piston rod 9, which is threadedly connected to the sampling piston cylinder 7. The top of the threaded piston rod 9 is connected to a baffle 91 for limiting by welding. The upper part of the casing 2 is connected to a motor 11 by bolts, and the output shaft of the motor 11 is connected to a driving gear 12 by welding. The upper part of the casing 2 is rotatably connected to a plurality of driven gears 13 evenly spaced and circumferentially distributed. The number of the driven gears 13 and the threaded piston rod 9 is the same. The driven gear 13 and the driving gear 12 are meshed with each other. The driven gear 13 is internally connected with a threaded sleeve 14 threadedly connected to the threaded piston rod 9 by welding. The baffle 91 contacts the threaded sleeve 14 to limit the threaded piston rod 9 from moving downward to the limit. The telescopic rod of the small cylinder 4 is controlled to extend or retract, so that the sealing frame 3 drives the sampling tube 5 to move outward or inward to extend and retract. Then, the output shaft of the motor 11 is controlled to rotate or reverse, so that the driving gear 12 rotates or reverses and meshes with the driven gear 13 in a forward or reverse direction, so that the driven gear 13 drives the threaded sleeve 14 to rotate or reverse, so that the threaded piston rod 9 moves up or down.

[0023] First, the staff connects the drill rod of the drilling rig to the shell 2, and then starts the drilling rig, so that the drill rod drives the shell 2 and the drill bit 1 to rotate, and then puts the drill rod into the oil exploration well. When the drill bit 1 contacts the ground of the oil exploration well, it drills a hole. During the drilling process, the oil in the formation flows into the hole. When a hole of a suitable depth is drilled to accommodate the shell 2, the drilling rig is closed, and then the small cylinder 4 is turned on to control the extension rod of the small cylinder 4 to extend, so that the sealing frame 3 drives the sampling tube 5 to move outward, and the lower end of the connecting tube 6 is stretched accordingly, and then the motor 11 is turned on, and the output shaft of the motor 11 rotates to drive the driving gear 12 to rotate, so that it meshes with a plurality of driven gears 13, and the driven gear 13 The threaded sleeve 14 is driven to rotate, and the threaded piston rod 9 drives the piston plate 8 to move upward, and the oil in the hole is successively drawn into the sampling tube 5 and the connecting tube 6. The oil in the connecting tube 6 flows into the sampling piston cylinder 7 for storage. When the piston plate 8 moves, the guide rod 10 guides it to improve the stability of the movement of the piston plate 8. During the oil extraction process, the filter screen 51 filters the oil to improve the purity of the oil, which is beneficial to the oil detection operation. After the sampling is completed, the motor 11 is turned off, and the telescopic rod of the small cylinder 4 is controlled to retract, so that the sealing frame 3 drives the sampling tube 5 to move inward and retract it into the shell 2, and the lower end of the connecting tube 6 is compressed accordingly, and finally the drill pipe is pulled out of the oil exploration well.

[0024] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A petroleum sampling device for petroleum exploration, characterized in that: The invention comprises a housing (2), a small cylinder (4), a sealing frame (3), a sampling piston cylinder (7), a connecting pipe (6), a sampling tube (5), a piston plate (8), a threaded piston rod (9), a motor (11), a driving gear (12), a driven gear (13) and a threaded sleeve (14); a plurality of small cylinders (4) are installed in the middle of the housing (2); a sealing frame (3) is fixedly connected to the telescopic rod of the small cylinder (4); the sealing frame (3) is completely embedded in the housing (2); a plurality of sampling piston cylinders (7) are installed in the housing (2); the bottom of the sampling piston cylinder (7) is connected to the connecting pipe (6); the lower end of the connecting pipe (6) is connected to the sampling tube (5); the sampling tube (5) is connected to the The housing (2) is connected to a sealing frame (3); a piston plate (8) is slidably connected inside the sampling piston cylinder (7); a threaded piston rod (9) is rotatably connected to the top of the piston plate (8); the threaded piston rod (9) is threadedly connected to the sampling piston cylinder (7); a motor (11) is installed at the upper inner portion of the housing (2); a driving gear (12) is fixedly connected to the output shaft of the motor (11); a plurality of driven gears (13) are rotatably connected to the upper inner portion of the housing (2); the number of the driven gears (13) is the same as that of the threaded piston rod (9); the driven gears (13) and the driving gear (12) are meshed with each other; a threaded sleeve (14) threadedly connected to the threaded piston rod (9) is fixedly connected inside the driven gear (13).

2. The oil sampling device for oil exploration according to claim 1, characterized in that: The sealing frame (3) and the piston plate (8) are both made of vacuum sealing rubber material.

3. The oil sampling device for oil exploration according to claim 2, characterized in that: It also includes a drill bit (1), and the drill bit (1) is fixedly connected to the bottom of the housing (2).

4. The oil sampling device for oil exploration according to claim 3, characterized in that: The sampling tube (5) also includes a filter screen (51). The lower end of the sampling tube (5) is internally connected to the filter screen (51) for filtering petroleum.

5. The oil sampling device for oil exploration according to claim 4, characterized in that: The invention also comprises a guide rod (10), a piston plate (8) is provided with symmetrically distributed guide holes (81), the housing (2) is fixedly connected with the guide rods (10) whose number is the same as the guide holes (81), and the piston plate (8) is slidably connected with the guide rods (10) via the guide holes (81).

6. The oil sampling device for oil exploration according to claim 5, characterized in that: It also includes a baffle (91), and the top end of the threaded piston rod (9) is fixedly connected to the baffle (91) for limiting position.

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