A high-efficiency sampling device and sampling method for gas phase tracer in oil and gas field development

Abstract

The present invention relates to the technical field of oil and gas field development, and specifically discloses an efficient sampling device and sampling method for gas phase tracers in oil and gas field development. It includes: a delivery pipe, installed on an oil production tree; a first fixed pipe, fixedly connected and connected to the delivery pipe; a first fixed shell, arranged on the first fixed pipe; a second fixed shell, penetrating the first fixed shell and fixedly connected thereto, the second fixed shell is provided with a first through hole connected to the inside of the first fixed shell; a sliding plug, slidably arranged in the second fixed shell, and a spring is installed between the second fixed shell; a tank body, threadedly installed on the second fixed shell; a first sliding column, limitedly slidably arranged in the tank body, the first sliding column is provided with a connecting hole. The present invention connects the connecting hole on the first sliding column with the first through hole on the second fixed shell through the movement of the first sliding column, that is, controls the gas medium to directly enter the tank body to avoid leakage of the gas medium.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas field development, and in particular to a high-efficiency sampling device and a sampling method for a gas phase tracer in oil and gas field development. Background Art

[0002] Gas phase tracers are widely used in the oil and gas industry to monitor and evaluate the flow and distribution of natural gas. Gas phase tracers are usually some gases with stable chemical properties and easy to detect. They can propagate in the gas phase and are used to track the flow and distribution of gas.

[0003] When sampling and testing the gas collected from oil and gas wells, it is usually necessary to connect the sampling bottle to the valve on the gas transmission pipeline, and then open the valve to allow part of the gas in the gas transmission pipeline to enter the sampling bottle. However, during this process, some gas often remains in the pipeline between the valve and the sampling bottle. After sampling, when the sampling bottle is disassembled, these residual gases often leak to the outside. As the number of sampling times increases, a large amount of the transported gas leaks to the outside, which not only causes a waste of gas resources, but also brings safety hazards. In particular, the gas collected from oil and gas wells often contains hydrogen sulfide (H2S), which is a colorless, highly toxic, and smelly gas that is extremely harmful to the human body. Gas leakage can easily cause hydrogen sulfide poisoning of operators, which can be life-threatening in severe cases. Summary of the invention

[0004] In order to overcome the problems mentioned in the above background technology, the present invention provides a highly efficient sampling device and sampling method for gas phase tracers in oil and gas field development.

[0005] The technical solution of the present invention is: a highly efficient sampling device for gas phase tracers in oil and gas field development, comprising:

[0006] The delivery pipe is installed on the Christmas tree;

[0007] A first fixed pipe, fixedly connected to and communicated with the delivery pipe;

[0008] A first fixing shell, disposed on the first fixing tube;

[0009] a second fixing shell, penetrating the first fixing shell and fixedly connected thereto, the second fixing shell being provided with a first through hole communicating with the interior of the first fixing shell;

[0010] a sliding plug, slidably disposed in the second fixed shell, with a spring installed between the sliding plug and the second fixed shell, the sliding plug being used to block the first through hole on the second fixed shell;

[0011] A tank body, threadedly mounted on the second fixed shell, the tank body being provided with an exhaust pipe on which a valve is mounted;

[0012] The first sliding column is limitedly slidably arranged in the tank body, the first sliding column is squeezed and matched with the sliding plug, the first sliding column is provided with a connecting hole, the connecting hole on the first sliding column is connected and matched with the first through hole on the second fixed shell, and is used to guide the gas to directly enter the tank body to avoid gas leakage.

[0013] Preferably, it also includes:

[0014] A sliding frame is slidably arranged in the tank body, and a spring is installed between the first sliding column and the tank body, the first sliding column is provided with a blind hole that cooperates with the sliding frame in a limited manner, the sliding frame is provided with an inclined surface, and a spring is installed between the first sliding column and the tank body;

[0015] A sliding rod is slidably arranged on the tank body and is pressed and matched with the inclined surface of the sliding frame. The sliding rod is pressed and matched with the second fixed shell.

[0016] Preferably, it also includes:

[0017] A second fixing pipe, fixedly connected to the second fixing shell and communicated with the first through hole on the second fixing shell;

[0018] A first conduit is disposed on the second fixed tube, and a center line of the first conduit coincides with a center line of the second fixed tube;

[0019] The second conduit is fixedly connected to the side wall of the second fixed shell and wraps the first conduit. The first fixed tube and the conveying tube are both slidably connected to the second conduit.

[0020] Preferably, it also includes:

[0021] A second sliding column, slidably disposed on the first fixed shell;

[0022] A third fixed tube is fixedly connected between the second fixed shell and the first fixed shell and is communicated with the second fixed shell. The center lines of the third fixed tube, the second fixed tube and the second sliding column coincide with each other. The sliding plug is provided with a second through hole. The second through hole of the sliding plug and the first through hole on the second fixed shell are used to communicate the second fixed tube with the third fixed tube.

[0023] Preferably, the inner diameter of the third fixed tube, the inner diameter of the second through hole on the sliding plug, the inner diameter of the second fixed tube and the inner diameter of the first guide tube are all the same and are the same as the outer diameter of the second sliding column.

[0024] Preferably, it also includes:

[0025] A first fixing frame, fixedly connected to a side wall of the first fixing shell, wherein the first fixing frame is provided with a plurality of limiting holes;

[0026] The first limiting rod is slidably disposed on the second sliding column, and a tension spring is installed between the first limiting rod and the second sliding column. The first limiting rod is limitedly matched with the corresponding limiting hole on the first fixing frame to limit the relative position of the second sliding column and the first fixing frame.

[0027] Preferably, it also includes:

[0028] A fixing seat is fixedly connected to the conveying pipe, the first conduit, the second conduit and the second sliding column are all pressed and matched with the fixing seat, the second conduit is provided with a first air guide hole, the first conduit is provided with a second air guide hole, and the first air guide hole is communicated and matched with the second air guide hole;

[0029] A power member, mounted on the side wall of the first fixed shell;

[0030] A rotating shaft is rotatably arranged on the first fixed shell, the rotating shaft is in transmission cooperation with the power member, the rotating shaft and the first conduit are transmitted through a gear set, the second fixed tube and the second conduit are both rotatably connected to the first conduit, and the first fixed tube and the first fixed shell are slidably connected.

[0031] Preferably, it also includes:

[0032] A second fixing frame is fixedly connected to the first fixing shell and is slidably connected to the delivery pipe, and the second fixing frame is provided with a plurality of limiting holes;

[0033] The second limiting rod is slidably disposed on the delivery pipe, and a tension spring is installed between the second limiting rod and the delivery pipe. The second limiting rod is limitedly matched with the adjacent limiting hole on the second fixing frame to limit the limiting position of the second fixing frame and the delivery pipe.

[0034] Preferably, the center line of the first conduit is inclined relative to the center line of the delivery pipe, so as to guide the gas to flow obliquely.

[0035] An efficient sampling method for gas phase tracers in oil and gas field development is based on the above-mentioned efficient sampling device for gas phase tracers in oil and gas field development, and comprises the following steps:

[0036] S1: Before sampling, first adjust the position of the second limiting rod inserted into the upper limit hole of the second fixing frame according to the sampling area, that is, adjust the length of the second catheter in the delivery tube;

[0037] S2: After the position of the second guide tube is adjusted, the first limiting rod is pulled to control the movement of the second sliding column, so that the second sliding column slides out of the second through hole of the sliding plug, that is, the limiting of the sliding plug is released;

[0038] S3: After the second sliding post moves, the tank body is threadedly installed on the second fixed shell. After the tank body is installed, the second fixed shell moves the sliding frame through the sliding rod. The sliding frame moves to release the limit of the blind hole on the first sliding post. Then the first sliding post moves and squeezes the sliding plug to move until the connecting hole on the first sliding post is connected with the second fixed tube.

[0039] S4: When the second conduit does not contact the fixing seat, as the tank body is installed, the flowing gas medium in the delivery pipe enters the tank body through the first conduit, the second fixing pipe, the first through hole on the second fixing shell and the connecting hole of the first sliding column;

[0040] S5: When the second conduit contacts the fixing seat, as the tank body is installed, the flowing gas medium in the delivery pipe can only enter the tank body through the first air guide hole, the second air guide hole, the first conduit, the second fixing pipe, the first through hole on the second fixing shell and the connecting hole of the first sliding column;

[0041] S6: During the process of the gas medium performing step S5, the power member is controlled to work, and the power member controls the rotation of the first conduit through the rotating shaft and the gear set, so as to control the gas medium to intermittently flow into the tank body;

[0042] S7: After a period of time after performing step S4 or step S5, the gas medium fills the tank body, and then the sliding plug is pressed and the first sliding column is pulled to reset, and then the second sliding column is controlled to move in the opposite direction and inserted into the second through hole of the sliding plug, the second fixed tube and the first conduit, and then the tank body is rotated in the opposite direction to remove the tank body from the second fixed shell, and at the same time, the sliding frame is re-inserted into the blind hole of the first sliding column;

[0043] S8: After a certain amount of gas medium is taken from the tank, the sampling time is marked on the tank.

[0044] Compared with the prior art, the present invention has the following advantages: the present invention enables the communication hole on the first sliding column to communicate with the first through hole on the second fixed shell through the movement of the first sliding column, that is, controls the gas medium to directly enter the tank body, thereby avoiding leakage of the gas medium; the sampling operation only requires the installation of the tank body to complete the sampling of the gas medium, thereby simplifying the operation process and improving the sampling efficiency; the first sliding column is prevented from moving by the cooperation of the sliding frame and the blind hole on the first sliding column, thereby further avoiding leakage of the gas medium after sampling and ensuring the integrity of the gas medium taken; the different lengths of the first conduit and the second conduit inserted into the conveying pipe are utilized to facilitate the device to sample the gas medium in different areas of the conveying pipe, thereby improving the comprehensiveness of the samples taken by the device and thus improving the comprehensiveness of the subsequent test results; the fixing seat is fitted with the second conduit, and then the first conduit is controlled to rotate in cooperation with the power part, thereby completing the intermittent multiple sampling of the gas medium flowing in the conveying pipe, thereby reducing the random error in a single sampling, improving the reliability of the data, and enabling the samples taken to provide more accurate and representative data. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0046] Figure 2 It is a schematic diagram of the three-dimensional structure of the delivery pipe and the first fixed shell of the present invention;

[0047] Figure 3 It is a cross-sectional view of the delivery pipe and the first fixed shell of the present invention;

[0048] Figure 4 It is a cross-sectional view of the second fixed shell and the tank body of the present invention;

[0049] Figure 5 It is a cross-sectional view of the tank body and the first sliding column of the present invention;

[0050] Figure 6 A cross-sectional view of the first conduit and the second conduit of the present invention;

[0051] Figure 7 It is a schematic diagram of the three-dimensional structure of the power part and the rotating shaft of the present invention.

[0052] Names of reference numerals in the figure: 1. Christmas tree, 101. Delivery pipe, 104. First fixed pipe, 105. First fixed shell, 106. Second fixed shell, 107. Sliding plug, 108. Tank body, 2. First sliding column, 3. Sliding frame, 301. Sliding rod, 4. Second fixed pipe, 401. First conduit, 402. Second conduit, 5. Second sliding column, 501. Third fixed pipe, 6. First fixed frame, 601. First limiting rod, 7. Fixed seat, 701. First air guide hole, 702. Second air guide hole, 703. Power part, 704. Rotating shaft, 8. Second fixed frame, 801. Second limiting rod. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0054] Example 1: An efficient sampling device for gas phase tracers in oil and gas field development, referring to Figure 1-Figure 4 As shown, it includes: a delivery pipe 101, which is installed on the Christmas tree 1; a first fixed pipe 104, which is fixedly connected to and communicated with the delivery pipe 101; a first fixed shell 105, which is arranged on the first fixed pipe 104; a second fixed shell 106, which penetrates the first fixed shell 105 and is fixedly connected thereto, and the second fixed shell 106 is provided with a first through hole that is communicated with the inside of the first fixed shell 105; a sliding plug 107, which is slidably arranged in the second fixed shell 106, and a spring is installed between the sliding plug 107 and the second fixed shell 106. 107 is used to block the first through hole on the second fixed shell 106; the tank body 108 is threadedly installed on the second fixed shell 106, and the tank body 108 is provided with an exhaust pipe for installing a valve; the first sliding column 2 is limitedly slidably arranged in the tank body 108, the first sliding column 2 is squeezed and matched with the sliding plug 107, and the first sliding column 2 is provided with a connecting hole. The connecting hole on the first sliding column 2 is connected and matched with the first through hole on the second fixed shell 106, which is used to guide the gas to directly enter the tank body 108 to avoid gas leakage.

[0055] In the above scheme, the pressure in the gas delivery pipeline on the Christmas tree 1 is observed based on the feedback of the pressure sensor installed on the Christmas tree 1 (the pressure sensor is a prior art and is not shown in the figure). When the pressure in the gas medium delivery pipeline of the Christmas tree 1 is relatively small, the gas in the gas delivery pipeline is not easy to enter the tank body 108. The operator uses a vacuum pump to connect the exhaust pipe on the tank body 108, then opens the valve on the tank body 108 and extracts the gas therein, so that a certain negative pressure is formed in the tank body 108, which is convenient for the device to extract a certain amount of gas medium. When the pressure in the gas medium delivery pipeline is relatively large, when extracting the gas in the tank body 108, the extraction amount can be appropriately reduced. In the initial state, the spring between the sliding plug 107 and the second fixed shell 106 is in a compressed state, and the sliding plug 107 blocks the first through hole on the second fixed shell 106. The elastic coefficient of the spring connected to the first sliding column 2 is greater than the elastic coefficient of the spring connected to the sliding plug 107.

[0056] Specific working principle: During the process of monitoring and evaluating the flow and distribution of natural gas in oil and gas fields by gas phase tracers, when it is necessary to sample the gas phase tracer in the gas medium, the operator screws the tank body 108 onto the second fixed shell 106, and then the operator pushes the first sliding column 2 upward, the first sliding column 2 squeezes the sliding plug 107 upward, and compresses the spring connected to the sliding plug 107. When the connecting hole on the first sliding column 2 is connected to the first through hole on the second fixed shell 106, the gas in the delivery pipe 101 passes through the first fixed pipe 104, the first fixed shell 105, The first through hole on the second fixed shell 106 and the connecting hole on the first sliding column 2 enter the tank body 108. The operator controls the rate at which the gas medium enters the tank body 108 by controlling the connection size between the connecting hole on the first sliding column 2 and the first through hole on the second fixed shell 106. After completing the sampling, the first sliding column 2 is pulled downward so that the connecting hole on the first sliding column 2 is completely located in the tank body 108. At this time, under the action of the spring connected to the sliding plug 107, the sliding plug 107 is reset to block the first through hole on the second fixed shell 106 to avoid gas leakage and improve the safety of gas medium sampling.

[0057] Reference Figure 4 and Figure 5 As shown, it also includes: a sliding frame 3, which is slidably arranged in the tank body 108 and a spring is installed between the tank body 108, a first sliding column 2 is provided with a blind hole that is limited by the sliding frame 3, the sliding frame 3 is provided with an inclined surface, and a spring is installed between the first sliding column 2 and the tank body 108; a sliding rod 301, which is slidably arranged on the tank body 108 and is pressed and matched with the inclined surface of the sliding frame 3, and the sliding rod 301 is pressed and matched with the second fixed shell 106.

[0058] In the above scheme, the inclined surface on the sliding frame 3 is inclined upward from left to right. In the initial state, the spring connected to the first sliding column 2 is in a compressed state, the spring between the sliding frame 3 and the tank body 108 is in a compressed state, and the sliding frame 3 is inserted into the blind hole of the first sliding column 2 to limit the movement of the first sliding column 2, so as to facilitate the preservation of the gas stored in the tank body 108. When the tank body 108 is threadedly mounted on the second fixed shell 106, the second fixed shell 106 squeezes the sliding rod 301 to move, and the sliding rod 301 moves to squeeze the inclined surface of the sliding frame 3, so that the sliding frame 3 moves to release the limit of the blind hole on the first sliding column 2. Subsequently, under the elastic force of the spring adjacent to the first sliding column 2, the first sliding column 2 automatically extends out, so that the connecting hole on the first sliding column 2 is connected with the first through hole on the second fixed shell 106 to sample the gas medium.

[0059] Example 2: Based on Example 1, refer to Figure 3 , Figure 6 and Figure 7As shown, it also includes: a second fixed tube 4, which is fixedly connected to the second fixed shell 106 and communicated with the first through hole on the second fixed shell 106; a first conduit 401, which is arranged on the second fixed tube 4, and the center line of the first conduit 401 coincides with the center line of the second fixed tube 4; a second conduit 402, which is fixedly connected to the side wall of the second fixed shell 106 and wraps the first conduit 401, and the first fixed tube 104 and the conveying tube 101 are both slidably connected to the second conduit 402.

[0060] In the above scheme, a delivery pipe 101 of corresponding size is provided according to the size of the delivery pipeline on the Christmas tree 1, and second conduits 402 of different lengths are provided, so that the left end of the second conduit 402 is located at different positions in the delivery pipe 101, so that the device can sample the gas medium at different positions in the delivery pipe 101. The sampling process is to repeat the above operation so that the gas enters the tank body 108 through the first conduit 401, the second fixed pipe 4, the first through hole of the second fixed shell 106 and the connecting hole of the first sliding column 2.

[0061] Reference Figure 3 As shown, it also includes: a second sliding column 5, which is slidably arranged on the first fixed shell 105; a third fixed tube 501, which is fixed between the second fixed shell 106 and the first fixed shell 105 and communicated with the second fixed shell 106, the center line of the third fixed tube 501, the center line of the second fixed tube 4, and the center line of the second sliding column 5 coincide with each other, and the sliding plug 107 is provided with a second through hole, and the second through hole of the sliding plug 107 and the first through hole on the second fixed shell 106 are used to connect the second fixed tube 4 and the third fixed tube 501; the inner diameter of the third fixed tube 501, the inner diameter of the second through hole on the sliding plug 107, the inner diameter of the second fixed tube 4 and the inner diameter of the first guide tube 401 are all the same and the same as the outer diameter of the second sliding column 5.

[0062] In the above scheme, in the initial state, the second sliding column 5 is inserted into the third fixed tube 501, the second through hole of the sliding plug 107, the second fixed tube 4 and the first conduit 401, the left end of the second sliding column 5 is flush with the left end of the first conduit 401, and the second sliding column 5 is provided with uniformly distributed rubber sealing rings (rubber sealing rings are prior art and not shown in the figure) to improve the sealing between it and the first conduit 401. When performing the gas medium sampling operation, the operator first pulls the second sliding column 5 to the right to shrink the left part of the second sliding column 5 into the third fixed tube 501. Subsequently, as the tank body 108 is installed, the gas medium repeats the above path to flow. After the sampling is completed, the tank body 108 is removed, and the second sliding column 5 is reversely moved to reset, wherein the second sliding column 5 moves to drive away the residual gas in the first conduit 401 to prevent the residual gas from affecting the accuracy of the next sampling result.

[0063] Reference Figure 2 and Figure 3 As shown, it also includes: a first fixed frame 6, fixedly connected to the side wall of the first fixed shell 105, and the first fixed frame 6 is provided with a plurality of limiting holes; a first limiting rod 601, slidably arranged on the second sliding column 5, and a tension spring is installed between the first limiting rod 601 and the second sliding column 5, and the first limiting rod 601 is limitedly matched with the corresponding limiting holes on the first fixed frame 6, and is used to limit the relative position of the second sliding column 5 and the first fixed frame 6.

[0064] In the above scheme, two limiting holes are provided on the first fixing frame 6. When the first limiting rod 601 is inserted into the limiting hole on the left side of the first fixing frame 6, the second sliding column 5 is inserted into the first guide tube 401. When the first limiting rod 601 is inserted into the limiting hole on the right side of the first fixing frame 6, the left part of the second sliding column 5 is located in the third fixing tube 501. This is the preparation action before sampling. The tank body 108 can be installed subsequently for sampling. The limiting cooperation between the above-mentioned first limiting rod 601 and the corresponding limiting hole on the first fixing frame 6 improves the working stability of the second sliding column 5 and improves the reliability of the use of the device.

[0065] Example 3: Based on Example 2, refer to Figure 6 and Figure 7 As shown, it also includes: a fixed seat 7, which is fixedly connected to the conveying pipe 101, the first conduit 401, the second conduit 402 and the second sliding column 5 are all squeezed and matched with the fixed seat 7, the second conduit 402 is provided with a first air guide hole 701, the first conduit 401 is provided with a second air guide hole 702, and the first air guide hole 701 is communicated and matched with the second air guide hole 702; a power piece 703, which is installed on the side wall of the first fixed shell 105; a rotating shaft 704, which is rotatably arranged on the first fixed shell 105, the rotating shaft 704 is in transmission cooperation with the power piece 703, the rotating shaft 704 and the first conduit 401 are driven by a gear set, the second fixed tube 4 and the second conduit 402 are both rotatably connected with the first conduit 401, and the first fixed tube 104 and the first fixed shell 105 are slidably connected.

[0066] In the above scheme, a control panel is provided on the first fixed shell 105, and the control panel is electrically connected to the power member 703. The power member 703 is a driving motor, and the power member 703 can also be a hand crank. Both methods can be adopted according to actual needs. The power member 703 is mainly used to drive the rotating shaft 704 to rotate. When the pressure in the delivery pipe 101 is too high, in order to improve the representativeness of the sample taken, it is necessary to perform segmented multiple sampling of the gas medium flowing in the delivery pipe 101. If a single sampling is performed, due to the excessive pressure in the delivery pipe 101, the gas in the delivery pipe 101 will quickly fill the tank 108, resulting in the gas sample taken being too limited. The specific working principle of the segmented multiple sampling is: the operator pushes the first fixed shell 105 The first fixed shell 105 drives the second conduit 402 to move and fit the fixed seat 7 through the second fixed shell 106, and then the tank body 108 is installed on the second fixed shell 106, and the second sliding column 5 is controlled to move rightward, and then the power member 703 is started to work through the control panel, and the power member 703 drives the first conduit 401 to rotate through the rotating shaft 704 and the gear set, and the first conduit 401 rotates so that the second air guide hole 702 thereon is alternately connected with the first air guide hole 701. During the process of the second air guide hole 702 being connected with the first air guide hole 701, the gas in the delivery pipe 101 enters the first conduit 401 through the first air guide hole 701 and the second air guide hole 702, and the subsequent gas repeats the above operation to enter the tank body 108.

[0067] During the above-mentioned segmented multiple sampling process, the operator adjusts the rotation frequency of the first conduit 401 according to the actual pressure in the delivery pipe 101 to control the single suction of gas samples of different volumes, thereby improving the applicability of the device and the reliability of the samples taken, so that the samples taken provide more accurate and representative data.

[0068] Reference Figure 2 and Figure 3 As shown, it also includes: a second fixing frame 8, which is fixed to the first fixing shell 105 and is slidably connected to the delivery pipe 101, and the second fixing frame 8 is provided with a plurality of limiting holes; a second limiting rod 801, which is slidably arranged on the delivery pipe 101, and a tension spring is installed between the second limiting rod 801 and the delivery pipe 101, and the second limiting rod 801 is limitedly matched with the adjacent limiting holes on the second fixing frame 8 to limit the limiting position of the second fixing frame 8 and the delivery pipe 101; the center line of the first conduit 401 is inclined relative to the center line of the delivery pipe 101 to guide the oblique flow of gas.

[0069] In the above scheme, the operator controls the second limiting rod 801 to be inserted into the limiting holes at different positions on the second fixing frame 8 to control the length of the second conduit 402 inserted into the delivery pipe 101, thereby realizing sampling of gas media in different areas, improving the comprehensiveness of the samples taken by the device, and thus improving the comprehensiveness of subsequent test results. The center line of the first conduit 401 is inclined relative to the center line of the delivery pipe 101, which is convenient for guiding the gas flow and reducing the residual and stagnation of gas in the first conduit 401 during the sampling process.

[0070] Example 4: Based on Example 3, refer to Figure 1-Figure 7 As shown, the present invention also provides an efficient sampling method for gas phase tracers in oil and gas field development, based on the above-mentioned efficient sampling device for gas phase tracers in oil and gas field development, comprising the following steps:

[0071] S1: Before sampling, first adjust the position of the second limiting rod 801 inserted into the upper limit hole of the second fixing frame 8 according to the sampling area, that is, adjust the length of the second conduit 402 in the delivery tube 101;

[0072] S2: After the position of the second guide tube 402 is adjusted, the first limiting rod 601 is pulled to control the movement of the second sliding column 5, so that the second sliding column 5 slides out of the second through hole of the sliding plug 107, that is, the limiting of the sliding plug 107 is released;

[0073] S3: After the second sliding column 5 has moved, the tank body 108 is threadedly installed on the second fixed shell 106. After the tank body 108 has been installed, the second fixed shell 106 moves the sliding frame 3 through the sliding rod 301. The sliding frame 3 moves to release the limit of the blind hole on the first sliding column 2. Then the first sliding column 2 moves and squeezes the sliding plug 107 to move until the communication hole on the first sliding column 2 is connected with the second fixed tube 4.

[0074] S4: When the second conduit 402 does not contact the fixing seat 7, as the tank body 108 is installed, the flowing gas medium in the delivery pipe 101 enters the tank body 108 through the first conduit 401, the second fixing pipe 4, the first through hole on the second fixing shell 106 and the connecting hole of the first sliding column 2;

[0075] S5: When the second conduit 402 contacts the fixing seat 7, as the tank body 108 is installed, the flowing gas medium in the delivery pipe 101 can only enter the tank body 108 through the first air guide hole 701, the second air guide hole 702, the first conduit 401, the second fixing pipe 4, the first through hole on the second fixing shell 106 and the connecting hole of the first sliding column 2;

[0076] S6: During the process of the gas medium performing step S5, the power member 703 is controlled to work. The power member 703 controls the rotation of the first conduit 401 through the rotating shaft 704 and the gear set, and controls the gas medium to intermittently flow into the tank body 108;

[0077] S7: After a period of time after performing step S4 or step S5, the gas medium fills the tank body 108, then the sliding plug 107 is pressed and the first sliding column 2 is pulled to reset, and then the second sliding column 5 is controlled to move in the opposite direction and inserted into the second through hole of the sliding plug 107, the second fixed tube 4 and the first guide tube 401, and then the tank body 108 is rotated in the opposite direction to remove the tank body 108 from the second fixed shell 106, and at the same time the sliding frame 3 is reinserted into the blind hole of the first sliding column 2;

[0078] S8: After a certain amount of gas medium is taken out of the tank body 108 , the sampling time is marked on the tank body 108 .

[0079] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope provided by the present invention, which should be covered within the protection scope of the present invention.

Claims

1. An efficient sampling device for gas phase tracers in oil and gas field development, characterized in that: Included are: A delivery pipe (101) installed on the Christmas tree (1); A first fixed pipe (104) fixedly connected to and in communication with the delivery pipe (101); A first fixing shell (105) is arranged on the first fixing tube (104); a second fixing shell (106) penetrating the first fixing shell (105) and fixedly connected thereto, the second fixing shell (106) being provided with a first through hole communicating with the interior of the first fixing shell (105); a sliding plug (107) slidably disposed in the second fixed shell (106), with a spring installed between the sliding plug and the second fixed shell (106), the sliding plug (107) being used to block the first through hole on the second fixed shell (106); A tank body (108) is threadedly mounted on the second fixed shell (106), and the tank body (108) is provided with an exhaust pipe on which a valve is installed; A first sliding column (2) is limitedly slidably arranged in the tank body (108), the first sliding column (2) is pressed and matched with the sliding plug (107), the first sliding column (2) is provided with a communication hole, the communication hole on the first sliding column (2) is communicated and matched with the first through hole on the second fixed shell (106), and is used to guide the gas to directly enter the tank body (108) to avoid gas leakage; A second fixed tube (4) is fixedly connected to the second fixed shell (106) and is in communication with a first through hole on the second fixed shell (106); A first conduit (401) is arranged on the second fixed tube (4), and a center line of the first conduit (401) coincides with a center line of the second fixed tube (4); A second conduit (402) is fixedly connected to the side wall of the second fixed shell (106) and wraps the first conduit (401); the first fixed tube (104) and the delivery tube (101) are both slidably connected to the second conduit (402); A second sliding column (5) slidably disposed on the first fixed shell (105); a third fixed tube (501) fixedly connected between the second fixed shell (106) and the first fixed shell (105), and communicated with the second fixed shell (106); a center line of the third fixed tube (501), a center line of the second fixed tube (4) and a center line of the second sliding column (5) coincide with each other; the sliding plug (107) is provided with a second through hole; the second through hole of the sliding plug (107) and the first through hole on the second fixed shell (106) are used to communicate the second fixed tube (4) and the third fixed tube (501); The inner diameter of the third fixed tube (501), the inner diameter of the second through hole on the sliding plug (107), the inner diameter of the second fixed tube (4) and the inner diameter of the first guide tube (401) are all the same in size and are the same in size as the outer diameter of the second sliding column (5); A fixing seat (7) is fixedly connected to the conveying pipe (101); the first conduit (401), the second conduit (402) and the second sliding column (5) are all pressed and matched with the fixing seat (7); the second conduit (402) is provided with a first air guide hole (701); the first conduit (401) is provided with a second air guide hole (702); the first air guide hole (701) is communicated and matched with the second air guide hole (702); A power component (703) mounted on a side wall of the first fixed shell (105); A rotating shaft (704) is rotatably disposed on the first fixed shell (105); the rotating shaft (704) is in transmission cooperation with the power member (703); the rotating shaft (704) and the first conduit (401) are transmitted via a gear set; the second fixed tube (4) and the second conduit (402) are both rotatably connected to the first conduit (401); and the first fixed tube (104) and the first fixed shell (105) are slidably connected.

2. The high-efficiency sampling device for gas phase tracers in oil and gas field development according to claim 1 is characterized in that: Also included are: a sliding frame (3) slidably arranged in the tank body (108), and a spring is installed between the first sliding column (2) and the tank body (108); the first sliding column (2) is provided with a blind hole that is limitedly matched with the sliding frame (3); the sliding frame (3) is provided with an inclined surface; and a spring is installed between the first sliding column (2) and the tank body (108); The sliding rod (301) is slidably disposed on the tank body (108) and is pressed and matched with the inclined surface of the sliding frame (3); the sliding rod (301) is pressed and matched with the second fixed shell (106).

3. The high-efficiency sampling device for gas phase tracers in oil and gas field development according to claim 2 is characterized in that: Also included are: A first fixing frame (6) is fixedly connected to a side wall of the first fixing shell (105), and the first fixing frame (6) is provided with a plurality of limiting holes; The first limiting rod (601) is slidably arranged on the second sliding column (5), and a tension spring is installed between the first limiting rod (601) and the second sliding column (5). The first limiting rod (601) is limitedly matched with a corresponding limiting hole on the first fixing frame (6) to limit the relative position of the second sliding column (5) and the first fixing frame (6).

4. The high-efficiency sampling device for gas phase tracers in oil and gas field development according to claim 3 is characterized in that: Also included are: A second fixing frame (8) is fixedly connected to the first fixing shell (105) and is slidably connected to the delivery pipe (101), and the second fixing frame (8) is provided with a plurality of limiting holes; The second limiting rod (801) is slidably arranged on the conveying tube (101), and a tension spring is installed between the second limiting rod (801) and the conveying tube (101). The second limiting rod (801) is limitedly matched with the adjacent limiting holes on the second fixing frame (8) to limit the limiting position of the second fixing frame (8) and the conveying tube (101).

5. The high-efficiency sampling device for gas phase tracers in oil and gas field development according to claim 4 is characterized in that: The center line of the first conduit (401) is inclined relative to the center line of the delivery pipe (101), so as to guide the gas to flow obliquely.

6. A highly efficient sampling method for gas phase tracers in oil and gas field development, according to the highly efficient sampling device for gas phase tracers in oil and gas field development according to claim 5, characterized in that: The steps include: S1: Before sampling, first adjust the position of the second limiting rod (801) inserted into the upper limit hole of the second fixing frame (8) according to the sampling area, that is, adjust the length of the second conduit (402) located in the delivery tube (101); S2: After the position of the second guide tube (402) is adjusted, the first limiting rod (601) is pulled to control the movement of the second sliding column (5), so that the second sliding column (5) slides out of the second through hole of the sliding plug (107), thereby releasing the limiting of the sliding plug (107); S3: After the second sliding column (5) has moved, the tank body (108) is threadedly mounted on the second fixed shell (106). After the tank body (108) has been mounted, the second fixed shell (106) moves the sliding frame (3) via the sliding rod (301). The sliding frame (3) moves to release the position restriction on the blind hole on the first sliding column (2). Subsequently, the first sliding column (2) moves and squeezes the sliding plug (107) to move until the communication hole on the first sliding column (2) is connected to the second fixed tube (4). S4: When the second conduit (402) does not contact the fixing seat (7), as the tank body (108) is installed, the flowing gas medium in the delivery pipe (101) enters the tank body (108) through the first conduit (401), the second fixing pipe (4), the first through hole on the second fixing shell (106) and the connecting hole of the first sliding column (2); S5: When the second conduit (402) contacts the fixing seat (7), as the tank body (108) is installed, the flowing gas medium in the delivery pipe (101) can only enter the tank body (108) through the first air guide hole (701), the second air guide hole (702), the first conduit (401), the second fixing pipe (4), the first through hole on the second fixing shell (106) and the connecting hole of the first sliding column (2); S6: During the process of the gas medium performing step S5, the power member (703) is controlled to work, and the power member (703) controls the rotation of the first conduit (401) through the rotating shaft (704) and the gear set, thereby controlling the gas medium to intermittently flow into the tank body (108); S7: After a period of time after the step S4 or the step S5 is performed, the gas medium fills the tank body (108), and then the sliding plug (107) is pressed and the first sliding column (2) is pulled to reset, and then the second sliding column (5) is controlled to move in the opposite direction and inserted into the second through hole of the sliding plug (107), the second fixed tube (4) and the first guide tube (401), and then the tank body (108) is rotated in the opposite direction to remove the tank body (108) from the second fixed shell (106), and at the same time the sliding frame (3) is reinserted into the blind hole of the first sliding column (2); S8: After a certain amount of gas medium is taken from the tank body (108), the sampling time is marked on the tank body (108).

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