Balanced sampler of oil reservoir physical simulation experiment device

Abstract

The utility model relates to the technical field of experiment tools, in particular to a balance sampler of an oil reservoir physical simulation experiment device. The balance sampler of the oil reservoir physical simulation experiment device comprises an experiment cylinder and a sampling cylinder, wherein the experiment cylinder is provided with a switching assembly for communicating the sampling cylinder with the experiment cylinder; the switching assembly comprises two switching pipes, the two switching pipes are communicated with the pipelines at the two ends of the experiment cylinder respectively, a communicated guide pipe is arranged on the switching pipe on one side, and a communicated sampling pipe is arranged on the switching pipe on the other side. According to the balance sampler of the oil reservoir physical simulation experiment device, flowing substances in the experiment barrel can be driven into the sampling barrel firstly, then communication between the sampling barrel and the experiment barrel is cut off, and the flowing substances in the sampling barrel are pushed outwards reversely, so that sampling operation can be achieved; therefore, the influence on sampling and collection caused by random spraying of flowing substances in the experiment cylinder due to pressure when the pipeline is directly opened can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental tools, in particular to a balanced sampler of an oil reservoir physical simulation experimental device. Background Art

[0002] The reservoir physics simulation experimental device is an indispensable and important tool in reservoir engineering research. It can reproduce the physical phenomena and processes of the reservoir under laboratory conditions, provide theoretical support and technical guidance for the exploration and development of the reservoir, and help reduce the risk of reservoir development and improve the recovery rate of the reservoir. In the process of reservoir physics experiments, it is necessary to sample the gaps of oil and water substances.

[0003] In the existing sampling device, after the pipeline is connected to the pipeline in the experimental device, the valve on the pipeline is generally opened directly. At this time, the flowing material in the experimental device will flow out directly. However, since there is a certain pressure inside the experimental device, directly opening the pressure relief valve will easily cause the flowing material to spray, thereby increasing the difficulty of sampling for the staff.

[0004] Therefore, it is necessary to provide a new reservoir physical simulation experimental device balanced sampler to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a balanced sampler for an oil reservoir physical simulation experiment device.

[0006] The utility model provides a balanced sampler for a reservoir physical simulation experiment device, comprising: an experiment tube and a sampling tube, wherein a transfer assembly for connecting the sampling tube and the experiment tube is provided on the experiment tube;

[0007] The adapter assembly includes an adapter tube, two of which are respectively connected to the pipes at both ends of the experimental cylinder, one side of the adapter tube is provided with a connecting conduit, the other side of the adapter tube is provided with a connecting sampling tube, and the bottom end of the adapter tube on the side provided with the sampling tube is connected to the sampling cylinder;

[0008] The adapter assembly also includes a three-way pipe, one end of which is connected to the sampling tube, and the other two ends of the three-way pipe are respectively provided with a first pump body and a second pump body, and the other end of the first pump body is connected to an end of the catheter away from the adapter pipe.

[0009] Preferably, a threaded top cover is provided at the top of the sampling tube, the interior of the top cover is communicated with the bottom end of the corresponding transfer tube, and a fixedly connected support frame is provided at the inner top of the top cover.

[0010] Preferably, fixedly connected guide rods are provided on both sides of the bottom of the support frame, the bottom ends of the two guide rods are provided with the same fixedly connected support bar, and the support bar is provided with a fixedly connected screw rod.

[0011] Preferably, a threaded rotating cylinder is sleeved on the outer wall of the screw rod, a rotatably connected comparison bar is provided above the outer wall of the rotating cylinder, and the inner wall of the comparison bar abuts against and is slidably connected to the outer wall of the corresponding guide rod.

[0012] Preferably, a piston plate which is slidably connected is sleeved on the outer walls of the two guide rods, and the outer wall of the piston plate abuts against and is slidably connected to the inner wall of the sampling tube.

[0013] Preferably, a threaded bottom cover is provided at the bottom end of the sampling cylinder, and the interior of the bottom cover is communicated with the end of the three-way pipe.

[0014] Compared with the related art, the balanced sampler of the reservoir physical simulation experiment device provided by the utility model has the following beneficial effects:

[0015] 1. When sampling, the utility model can first drive the flowing material in the experimental cylinder into the sampling cylinder, then cut off the connection between the sampling cylinder and the experimental cylinder, and reversely drive the flowing material inside the sampling cylinder outward to realize the sampling operation, thereby reducing the influence on the sampling collection caused by the random spraying of the flowing material in the experimental cylinder due to pressure when the pipeline is directly opened.

[0016] 2. The utility model sets a rotating cylinder inside the sampling barrel. Before the sampling operation is performed, the rotating cylinder can be controlled to rotate to drive the position of the adjustment bar, so as to control the depth of the piston plate falling inside the sampling barrel at a later time, and then the space above the piston plate and inside the sampling barrel can be changed, so that the device can flexibly control the sampling amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of a balanced sampler for a reservoir physical simulation experiment device is provided for the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the connection between the adapter assembly and the sampling tube shown;

[0019] Figure 3 for Figure 2 A schematic diagram of a partial structure of a tee pipe and its components is shown;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure of the top cover and its components shown.

[0021] Numbers in the figure: 1. experimental cylinder; 2. adapter assembly; 21. adapter tube; 22. catheter; 23. sampling tube; 24. three-way pipe; 25. first pump body; 26. second pump body; 3. sampling cylinder; 31. top cover; 311. support frame; 312. guide rod; 32. bottom cover; 33. piston plate; 34. support bar; 341. screw rod; 342. rotating cylinder; 343. comparison bar. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 4 The embodiment of the utility model provides a balanced sampler for a reservoir physics simulation experiment device, and the balanced sampler for the reservoir physics simulation experiment device comprises: an experimental cylinder 1 and a sampling cylinder 3.

[0025] In the embodiments of the present invention, please refer to Figures 1 to 4 The experimental cylinder 1 is provided with an adapter assembly 2 for connecting the sampling cylinder 3 and the experimental cylinder 1; the adapter assembly 2 includes a adapter tube 21, the adapter tube 21 is provided with two and respectively connected with the pipelines at both ends of the experimental cylinder 1, a connecting conduit 22 is provided on one side of the adapter tube 21, and a connecting sampling tube 23 is provided on the other side of the adapter tube 21, and the bottom end of the adapter tube 21 on one side of the sampling tube 23 is connected with the sampling cylinder 3; the adapter assembly 2 also includes a three-way pipe 24, one end of the three-way pipe 24 is connected with the sampling cylinder 3, and the other two ends of the three-way pipe 24 are respectively provided with a first pump body 25 and a second pump body 26, and the other end of the first pump body 25 is connected with an end of the conduit 22 away from the adapter tube 21.

[0026] It should be noted that: by driving the gas of the first pump body 25 and the second pump body 26 in the adapter assembly 2, when sampling, the flowing material in the experimental cylinder 1 can be driven into the sampling cylinder 3 first, and then the connection between the sampling cylinder 3 and the experimental cylinder 1 can be cut off, and the flowing material in the sampling cylinder 3 can be driven outward in the reverse direction, so as to realize the sampling operation, thereby reducing the influence on the sampling collection caused by the random spraying of the flowing material in the experimental cylinder 1 due to the pressure when the pipeline is directly opened;

[0027] It should also be noted that valves are provided on both sides of the experimental tube 1, the transfer tube 21, the sampling tube 23 and the three-way tube 24, so that the staff can flexibly control the flow trajectory of the material during use;

[0028] At the same time, the side wall of the sampling tube 3 is made of transparent material, so that during the sampling process, it is convenient for the staff to observe in real time.

[0029] In the embodiments of the present invention, please refer to Figures 1 to 4 The top of the sampling tube 3 is provided with a threaded top cover 31, the interior of the top cover 31 is communicated with the bottom end of the corresponding transfer tube 21, and the inner top of the top cover 31 is provided with a fixedly connected support frame 311, and both sides of the bottom of the support frame 311 are provided with fixedly connected guide rods 312, and the bottom ends of the two guide rods 312 are provided with the same fixedly connected support bar 34, and a fixedly connected screw rod 341 is provided on the support bar 34, and a threaded rotating cylinder 342 is sleeved on the outer wall of the screw rod 341, and a rotatably connected comparison bar 343 is provided above the outer wall of the rotating cylinder 342, and the inner wall of the comparison bar 343 is abutted against and slidably connected to the outer wall of the corresponding guide rod 312.

[0030] It should be noted that: a scale bar is provided on the guide rod 312. When the staff controls the rotating cylinder 342 to rotate, the rotating rotating cylinder 342 will spirally move on the outer wall of the screw rod 341. Since the rotating cylinder 342 and the comparison bar 343 are rotatably connected, the comparison bar 343 can be driven to move synchronously on the outer wall of the guide rod 312. Therefore, the depth to which the piston plate 33 can move downward inside the sampling cylinder 3 at a later stage can be accurately controlled through the stability between the comparison bar 343 and the scale bar, thereby adjusting the volume of the top of the piston plate 33 for holding the sample, thereby improving the sampling accuracy of the device at a later stage.

[0031] In the embodiments of the present invention, please refer to Figures 1 to 4 A piston plate 33 with the same sliding connection is sleeved on the outer walls of the two guide rods 312, and the outer wall of the piston plate 33 is abutted against and slidably connected to the inner wall of the sampling tube 3. A bottom cover 32 with a threaded connection is provided at the bottom end of the sampling tube 3, and the interior of the bottom cover 32 is connected to the end of the three-way pipe 24.

[0032] It should be noted that: through the setting of the piston plate 33, the piston plate 33 can divide the interior of the sampling cylinder 3 into two independent spaces, so that during the sampling process, the first pump body 25 can draw the air from the lower part of the sampling cylinder 3 and inject it into the experimental cylinder 1, and return it to the top of the piston plate 33 inside the sampling cylinder 3, thereby maintaining the pressure balance of the device and improving the sampling stability of the device in the later stage.

[0033] The working principle of the balanced sampler of the reservoir physical simulation experiment device provided by the utility model is as follows;

[0034] Before using the device, the staff can first control the rotating cylinder 342 to rotate according to the needs. At this time, the rotating rotating cylinder 342 drives the comparison bar 343 to slide on the outer wall of the guide rod 312, so as to control the depth of the piston plate 33 moving downward inside the sampling cylinder 3, and then flexibly control the volume of the sample extracted by the sampling cylinder 3;

[0035] After the rotation position is adjusted, the sampling cylinder 3 can be installed in the adapter assembly 2, and then the valves at both ends of the experimental cylinder 1 can be closed, and the valves in the adapter assembly 2 except for the valves corresponding to the sampling tube 23 can be opened, and then the first pump body 25 can be controlled to work. The working first pump body 25 will transport the air below the piston plate 33 inside the sampling cylinder 3 to the inside of the experimental cylinder 1 through the tee pipe 24 through the conduit 22;

[0036] At this time, the gas entering the experimental cylinder 1 will drive the flowing material inside the experimental cylinder 1, so that the flowing material can flow into the sampling cylinder 3 through another transfer tube 21, and the flowing material entering the sampling cylinder 3 will squeeze the piston plate 33, and smoothly be initially stored inside the sampling cylinder 3. In this process, the sampling cylinder 3 can absorb the pressurized flowing material, thereby preventing the high-pressure flowing material inside the experimental cylinder 1 from being directly ejected outward and randomly splashing.

[0037] Then the transfer tube 21 and the valve close to the first pump body 25 can be closed, the sampling tube 23 and the valve close to the second pump body 26 can be opened, and the second pump body 26 can be controlled to work. The working second pump body 26 injects gas into the sampling cylinder 3, and drives the piston plate 33 to move upward, so that the flowing material initially collected in the sampling cylinder 3 can be discharged outward through the sampling tube 23.

[0038] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A balanced sampler for a reservoir physical simulation experiment device, characterized in that: include: An experimental cylinder (1) and a sampling cylinder (3), wherein the experimental cylinder (1) is provided with a connecting assembly (2) for connecting the sampling cylinder (3) and the experimental cylinder (1); The adapter assembly (2) comprises an adapter tube (21), the adapter tube (21) being provided with two pipes respectively connected to the pipes at both ends of the experimental cylinder (1), one side of the adapter tube (21) being provided with a connecting conduit (22), the other side of the adapter tube (21) being provided with a connecting sampling tube (23), and the bottom end of the adapter tube (21) on the side provided with the sampling tube (23) being connected to the sampling cylinder (3); The adapter assembly (2) further comprises a three-way pipe (24), one end of which is in communication with the sampling tube (3), and the other two ends of the three-way pipe (24) are respectively provided with a first pump body (25) and a second pump body (26), and the other end of the first pump body (25) is in communication with an end of the catheter (22) away from the adapter pipe (21).

2. The balanced sampler of the reservoir physical simulation experiment device according to claim 1, characterized in that: A threaded top cover (31) is provided at the top of the sampling tube (3), the interior of the top cover (31) is communicated with the bottom end of the corresponding transfer tube (21), and a fixedly connected support frame (311) is provided at the inner top of the top cover (31).

3. The balanced sampler of the reservoir physical simulation experiment device according to claim 2, characterized in that: Both sides of the bottom of the support frame (311) are provided with fixedly connected guide rods (312), the bottom ends of the two guide rods (312) are provided with a same fixedly connected support bar (34), and the support bar (34) is provided with a fixedly connected screw rod (341).

4. The balanced sampler of the reservoir physical simulation experiment device according to claim 3, characterized in that: A threaded rotating cylinder (342) is sleeved on the outer wall of the screw rod (341), a rotatably connected comparison bar (343) is provided above the outer wall of the rotating cylinder (342), and the inner wall of the comparison bar (343) abuts against and is slidably connected to the outer wall of the corresponding guide rod (312).

5. The balanced sampler of the reservoir physical simulation experiment device according to claim 4, characterized in that: The outer walls of the two guide rods (312) are sleeved with a piston plate (33) that is slidably connected thereto, and the outer wall of the piston plate (33) abuts against and is slidably connected to the inner wall of the sampling cylinder (3).

6. The balanced sampler of the reservoir physical simulation experiment device according to claim 1, characterized in that: A threaded bottom cover (32) is provided at the bottom end of the sampling tube (3), and the interior of the bottom cover (32) is communicated with the end of the three-way pipe (24).

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