Oil field rock core sample gas collecting device

Abstract

The utility model relates to the field of sample gas collection, and discloses an oil field rock core sample gas collection device which comprises a collection barrel, a gas inlet pipe is fixedly connected to the left side of the collection barrel, a mounting pipe is arranged on the left side of the gas inlet pipe, a gas collection assembly is arranged on the inner wall of the collection barrel, and the gas collection assembly comprises a piston. The outer side of the piston is connected to the inner wall of the collecting barrel, a stabilizing rod is fixedly connected to the right side of the collecting barrel, a movable plate is slidably connected to the outer wall of the stabilizing rod, a fixed plate is fixedly connected to the right side of the stabilizing rod, and the movable plate and the fixed plate are elastically connected through a compression spring. According to the gas collecting device, through the matched use of the gas collecting assembly and the collecting barrel, when the collecting barrel is full of sample gas, the piston drives the moving plate to move and drives the connecting rod to move to rotate the ball body, so that the gas inlet pipe is automatically closed, and the gas collecting efficiency and the safety of the collecting barrel are improved.

Description

Technical Field

[0001] The utility model relates to the field of sample gas collection, in particular to a gas collection device for oilfield core samples. Background Art

[0002] In the process of oil exploration and development, the analysis of oilfield core samples is crucial for understanding the geological characteristics of underground oil reservoirs, the distribution of oil and gas, and the development potential of oil reservoirs. Among them, the analysis of gases in core samples is particularly important because it can provide important information about the composition, source, and storage conditions of oil and gas.

[0003] Gas collection tanks are widely used in the collection of gases from oilfield core samples. Such devices can not only store the collected gases safely and effectively but also ensure the purity and representativeness of the gases, thus providing reliable samples for subsequent analysis.

[0004] When the existing gas collection tanks are filled with gases, they cannot automatically disconnect from the gas-generating device when full, which may lead to gas leakage and excessive pressure, posing a threat to equipment and operation safety. For this reason, a gas collection device for oilfield core samples is proposed to solve the above problems. Summary of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a gas collection device for oilfield core samples, aiming to improve the problem that "it cannot automatically disconnect from the gas-generating device when full, which may pose a threat to equipment and operation safety" in the existing technology.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A gas collection device for oilfield core samples, including a collection barrel, a gas inlet pipe is fixedly connected to the left side of the collection barrel, an installation pipe is arranged on the left side of the gas inlet pipe, a gas collection assembly is arranged on the inner wall of the collection barrel, the gas collection assembly includes a piston, the outer side of the piston is piston-connected to the inner wall of the collection barrel, a stabilizing rod is fixedly connected to the right side of the collection barrel, and a moving plate is slidably connected to the outer wall of the stabilizing rod.

[0007] As a further description of the above technical scheme: A fixing plate is fixedly connected to the right side of the stabilizing rod, the moving plate and the fixing plate are elastically connected by a compression spring, and a connecting rod is fixedly connected to the rear side of the moving plate.

[0008] As a further description of the above technical scheme: The left bottom end of the connecting rod is rotatably connected to a moving rod, a rotating rod is slidably connected to the inner wall of the bottom end of the moving rod, a sphere is fixedly connected to the bottom end of the rotating rod, and the outer wall of the sphere is rotatably connected to the inner wall of the gas inlet pipe.

[0009] As a further description of the above technical solution: a through groove is provided in the middle of the right side of the collection bucket, and two groups of stabilizing rods are provided. The two groups of stabilizing rods are symmetrically arranged with the center line of the moving plate as the axis of symmetry.

[0010] As a further description of the above technical solution: an installation component is provided at the front end of the left side of the intake pipe. The installation component includes a base. The left side of the base is fixedly connected to the outer wall of the intake pipe. A fixing rod is rotatably connected to the inner wall of the base. The left end of the fixing rod slides in the inner wall of the installation pipe. A rotating shaft is rotatably connected to the inner wall of the fixing rod. The upper and lower ends of the rotating shaft are fixedly connected to the inner wall of the base. The rotating shaft and the fixing rod are elastically connected by a torsion spring.

[0011] As a further description of the above technical solution: a limit pin is fixedly connected to the left side of the intake pipe. A sealing groove is provided on the left side of the intake pipe. A sealing strip is provided on the right side of the installation pipe. Two groups of the base, the fixing rod, the rotating shaft and the torsion spring are provided. The two groups of the base, the fixing rod, the rotating shaft and the torsion spring are symmetrically arranged with the center line of the intake pipe as the axis of symmetry.

[0012] As a further description of the above technical solution: the rotating rod is set in an L shape.

[0013] As a further description of the above technical solution: a stop post is fixedly connected to the left side of the intake pipe near the rotating rod.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, through the combined use of the gas collection component and the collection bucket, when the collection bucket is filled with the sample gas, the piston drives the moving plate to move, drives the connecting rod to move and rotates the sphere, so as to automatically close the intake pipe, improving the gas collection efficiency and safety of the collection bucket;

[0016] 2. In the utility model, through the combined use of the installation component and the installation pipe, when the sample gas in the collection bucket reaches the predetermined amount, the collection bucket can be quickly and conveniently removed from the installation pipe, improving the operation efficiency and convenience. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the whole device in the utility model.

[0018] Figure 2 It is a front three-dimensional structural sectional schematic diagram of the collection bucket in the utility model.

[0019] Figure 3 It is a disassembled three-dimensional structural schematic diagram of the sphere in the utility model.

[0020] Figure 4 It is a disassembled three-dimensional structural schematic diagram of the intake pipe and the installation pipe in the utility model.

[0021] Figure 5 This is a split three-dimensional structural schematic diagram of the base and the fixed rod in the present utility model.

[0022] Legend: 1. Collection barrel; 2. Air inlet pipe; 3. Installation pipe; 41. Piston; 42. Stabilizing rod; 43. Moving plate; 44. Fixed plate; 45. Compression spring; 46. Connecting rod; 47. Moving rod; 48. Rotating rod; 49. Sphere; 51. Base; 52. Fixed rod; 53. Rotating shaft; 54. Torsion spring; 55. Limit pin. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Refer to Figure 1 and Figure 2 , an embodiment provided by the present utility model: An oilfield core sample gas collection device includes a collection barrel 1 for collecting oilfield core sample gas. A stabilizing block is provided at the top of the collection barrel 1 to make the movement of the connecting rod 46 more stable. The left side of the collection barrel 1 is fixedly connected with an air inlet pipe 2 for inputting oilfield core sample gas. The left side of the air inlet pipe 2 is provided with an installation pipe 3, and the installation pipe 3 is fixed to the gas generating device by bolts. A gas collection assembly is provided on the inner wall of the collection barrel 1. The gas collection assembly includes a piston 41, and two groups of sealing rings are provided on the piston 41 to improve the sealing performance of the piston 41. A push rod is provided on the right side of the piston 41 for pushing the moving plate 43. The outer side of the piston 41 is piston-connected to the inner wall of the collection barrel 1. The right side of the collection barrel 1 is fixedly connected with stabilizing rods 42. The two groups of stabilizing rods 42 improve the stability of the moving plate 43 during movement. The outer wall of the stabilizing rod 42 is slidably connected with a moving plate 43 for driving the connecting rod 46 to move. There are two groups of stabilizing rods 42, and the two groups of stabilizing rods 42 are symmetrically arranged with the center line of the moving plate 43 as the axis of symmetry.

[0025] Refer to Figure 1 - Figure 3, a fixing plate 44 is fixedly connected to the right side of the stabilizer bar 42 for fixing the right side of the compression spring 45. The moving plate 43 and the fixing plate 44 are elastically connected by the compression spring 45. Due to the elastic force of the compression spring 45, the moving plate 43 can return to its original position. A connecting rod 46 is fixedly connected to the rear side of the moving plate 43. The connecting rod 46 is used to drive the moving rod 47 to move. The left bottom end of the connecting rod 46 is rotatably connected to the moving rod 47. The moving rod 47 slides on the outer wall of the rotating rod 48 while being driven by the connecting rod 46. The bottom inner wall of the moving rod 47 is slidably connected to the rotating rod 48. The rotating rod 48 is arranged in an L shape. When the connecting rod 46 moves to the right, the bottom end of the rotating rod 48 is driven by the moving rod 47 to rotate inside the intake pipe 2. While the rotating rod 48 rotates, it drives the moving rod 47 to rotate at the bottom end of the connecting rod 46, so that the rotating rod 48 drives the sphere 49 to rotate in the horizontal direction. The bottom end of the rotating rod 48 is fixedly connected to the sphere 49. The sphere 49 is provided with ventilation holes. When the rotating rod 48 drives the sphere 49 to rotate in the horizontal direction, the opening of the ventilation hole rotates to the inner wall of the intake pipe 2, thereby closing the intake pipe 2 and improving the safety of the collection bucket 1. The outer wall of the sphere 49 is rotatably connected to the inner wall of the intake pipe 2. A through groove is provided in the middle of the right side of the collection bucket 1 to facilitate the movement of the push rod. A stop post is fixedly connected to the intake pipe 2 near the left side of the rotating rod 48 to limit the rotation angle of the sphere 49 and prevent the sphere 49 from rotating excessively.

[0026] Refer to Figure 1 , Figure 2 and Figure 5 , an installation component is provided at the front end of the left side of the intake pipe 2. The installation component includes a base 51. The left side of the base 51 is fixedly connected to the outer wall of the intake pipe 2 for stably supporting the components of the installation component. A fixing rod 52 is rotatably connected to the inner wall of the base 51 for limiting the installation pipe 3. By pressing the right side of the fixing rod 52, the fixing rod 52 rotates, thereby releasing the limitation on the installation pipe 3. The left end of the fixing rod 52 slides inside the installation pipe 3. A rotating shaft 53 is rotatably connected to the inner wall of the fixing rod 52 for supporting the fixing rod 52 when it rotates. The upper and lower ends of the rotating shaft 53 are fixedly connected to the inner wall of the base 51. The rotating shaft 53 and the fixing rod 52 are elastically connected by a torsion spring 54. The left side of the fixing rod 52 is driven by the torsion force of the torsion spring 54 to limit the installation pipe 3.

[0027] Refer to Figure 1 , Figure 2 and Figure 4, a limiting pin 55 is fixedly connected to the left side of the intake pipe 2. The limiting pin 55 can slide on the inner wall of the installation pipe 3 to limit the installation pipe 3. A sealing groove is provided on the left side of the intake pipe 2, and a sealing strip is provided on the right side of the installation pipe 3. The cooperation of the sealing groove and the sealing strip can improve the sealing performance between the intake pipe 2 and the installation pipe 3. There are two sets of the base 51, the fixed rod 52, the rotating shaft 53 and the torsion spring 54. The two sets of the base 51, the fixed rod 52, the rotating shaft 53 and the torsion spring 54 are symmetrically arranged with the center line of the intake pipe 2 as the axis of symmetry, which can fix both sides of the installation pipe 3, thereby improving the stability of the installation.

[0028] Working principle: When in use, the sample gas is transported into the intake pipe 2 through the installation pipe 3, so that the sample gas enters the collection barrel 1. When the gas in the collection barrel 1 increases, the piston 41 is squeezed, so that the piston 41 slides on the inner wall of the collection barrel 1. When the sample gas in the collection barrel 1 is full, the piston 41 squeezes the moving plate 43, thereby driving the moving plate 43 to slide on the outer walls of the two stabilizing rods 42, and at the same time compressing the compression spring 45.

[0029] While the moving plate 43 moves, it drives the connecting rod 46 to move. While the connecting rod 46 moves, it drives the moving rod 47 to slide on the outer wall of the rotating rod 48 and rotate inside the connecting rod 46. When the rotating rod 48 rotates, it drives the sphere 49 to rotate on the inner wall of the intake pipe 2, so that the intake pipe 2 is closed to prevent the sample gas from leaking. While the rotating rod 48 rotates, the rotating rod 48 is limited by the stop post.

[0030] After the collection barrel 1 is filled with gas, by pressing the right sides of the two fixed rods 52, the fixed rods 52 rotate around the rotating shaft 53, so that the left sides of the fixed rods 52 slide out from the installation pipe 3. While the fixed rods 52 rotate, the torsion spring 54 is twisted. At this time, the intake pipe 2 can be removed from the installation pipe 3, which improves the operation efficiency and convenience.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oilfield core sample gas collection device, comprising a collection barrel (1), characterized in that: A gas inlet pipe (2) is fixedly connected to the left side of the collection bucket (1). An installation pipe (3) is arranged on the left side of the gas inlet pipe (2). A gas collection assembly is arranged on the inner wall of the collection bucket (1). The gas collection assembly includes a piston (41). The outer side of the piston (41) is piston-connected to the inner wall of the collection bucket (1). A stabilizing rod (42) is fixedly connected to the right side of the collection bucket (1). A moving plate (43) is slidably connected to the outer wall of the stabilizing rod (42).

2. The gas collection device for oilfield core samples according to claim 1, wherein: A fixing plate (44) is fixedly connected to the right side of the stabilizing rod (42). The moving plate (43) and the fixing plate (44) are elastically connected by a compression spring (45). A connecting rod (46) is fixedly connected to the rear side of the moving plate (43).

3. The gas collection device for oilfield core samples according to claim 2, wherein: The left bottom end of the connecting rod (46) is rotatably connected to a moving rod (47). A rotating rod (48) is slidably connected to the inner wall of the bottom end of the moving rod (47). A sphere (49) is fixedly connected to the bottom end of the rotating rod (48). The outer wall of the sphere (49) is rotatably connected to the inner wall of the gas inlet pipe (2).

4. The gas collection device for oilfield core samples according to claim 1, wherein: A through groove is formed in the middle of the right side of the collection bucket (1). There are two groups of the stabilizing rods (42). The two groups of the stabilizing rods (42) are symmetrically arranged with the center line of the moving plate (43) as the axis of symmetry.

5. The gas collection device for oilfield core samples according to claim 1, characterized in that: An installation assembly is arranged at the front end of the left side of the gas inlet pipe (2). The installation assembly includes a base (51). The left side of the base (51) is fixedly connected to the outer wall of the gas inlet pipe (2). A fixing rod (52) is rotatably connected to the inner wall of the base (51). The left end of the fixing rod (52) slides in the inner wall of the installation pipe (3). A rotating shaft (53) is rotatably connected to the inner wall of the fixing rod (52). The upper and lower ends of the rotating shaft (53) are fixedly connected to the inner wall of the base (51). The rotating shaft (53) and the fixing rod (52) are elastically connected by a torsion spring (54).

6. The gas collection device for oilfield core samples according to claim 5, wherein: A limit pin (55) is fixedly connected to the left side of the gas inlet pipe (2). A sealing groove is formed in the left side of the gas inlet pipe (2). A sealing strip is arranged on the right side of the installation pipe (3). There are two groups of the base (51), the fixing rod (52), the rotating shaft (53) and the torsion spring (54). The two groups of the base (51), the fixing rod (52), the rotating shaft (53) and the torsion spring (54) are symmetrically arranged with the center line of the gas inlet pipe (2) as the axis of symmetry.

7. The gas collection device for oilfield core samples according to claim 3, characterized in that: The rotating rod (48) is arranged in an L shape.

8. The gas collection device for oilfield core samples according to claim 1, characterized in that: A stop post is fixedly connected to the left side of the gas inlet pipe (2) close to the rotating rod (48).

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