Automatic slurry gas collecting device
By designing an automatic mud gas collection device that controls the solenoid valve to automatically switch the pumping pipeline and the drainage pipeline to be opened and broken, the problems of manual collection in the prior art are solved, and the automatic collection of mud gas is realized, and data accuracy and well recording operation efficiency are improved.
Patent Information
- Application Number
- CN202421454300.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-24
AI Technical Summary
In oil and gas well recording and exploration tasks, the collection of mud formation gas samples in the prior art relies on manual operations, which leads to inconvenient collection, time-consuming, easy to leak, and has a large risk of isotope data loss.
An automatic mud gas acquisition device is designed, and by controlling the opening and closing of the first solenoid valve and the second solenoid valve, it automatically switches the on-off relationship between the exhaust pipe and the exhaust pipe, and realizes automatic switching in the three modes of acquisition, exhaust and exhaust, so as to realize automatic mud gas acquisition.
The device can automatically monitor the drilling depth and automatically start the acquisition process when the preset depth is pre-set, simplify manual operations, reduce human operation errors, improve data accuracy and reliability, improve well recording operation efficiency, and reduce costs.
Smart Images
Figure CN222772216U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil and gas exploration, in particular to an automatic mud gas collection device used for well site isotope logging. Background Art
[0002] In oil and gas logging and exploration tasks, especially in field isotope logging work, it is necessary to frequently collect mud formation gas samples. In the prior art, a purely manual collection method is usually adopted, which requires staff to always pay attention to the late depth of drilling. When a certain depth is reached, it is necessary to quickly use air bags to collect and record the mud gas. However, the above-mentioned traditional manual collection method is very inconvenient and requires a lot of manpower and time. At the same time, it is easy to be negligent in specific operations. Since the field logging equipment will not actively remind the operator to reach the late depth, it often causes the operator to miss the collection opportunity and miss some formation gas samples. There is a greater risk of isotope data loss, especially in the case of frequent collection. The staff often miss the collection of some isotope data because they do not have time to operate.
[0003] Therefore, it is necessary to study an automatic mud gas collection device to solve the above problems or alleviate the impact of the above problems. Utility Model Content
[0004] The utility model provides an automatic mud gas collection device, which controls the on-off relationship between a suction pipeline and a drainage pipeline by controlling the opening and closing of a first solenoid valve and a second solenoid valve, so as to realize automatic switching among three modes of collection, emptying and suction, and realize automatic collection of mud gas.
[0005] The utility model of the automatic mud gas collection device comprises:
[0006] A drainage pipeline, one end of which is a sampling port connected to the wellhead, and the other end is a discharge port, and a first solenoid valve is provided on the drainage pipeline;
[0007] An air extraction pipeline, one end of which is connected to the first solenoid valve, and the other end of which is connected to the sample bag, and a second solenoid valve is provided on the air extraction pipeline and the drainage pipeline;
[0008] A logging controller, electrically connected to the first solenoid valve and the second solenoid valve;
[0009] The logging controller can control the opening and closing of the first solenoid valve and the second solenoid valve respectively to control the on-off relationship between the air extraction pipeline and the drainage pipeline, so as to realize automatic switching among the three modes of collection, emptying and air extraction.
[0010] In one embodiment, the first solenoid valve includes a first main gas port and a second main gas port connected to the exhaust pipeline and a third main gas port connected to the exhaust pipeline;
[0011] When the first solenoid valve is closed, the first main air port is communicated with the second main air port; when the first solenoid valve is opened, the third main air port is communicated with the second main air port.
[0012] In one embodiment, the second solenoid valve includes a first gas port and a second gas port connected to the gas extraction pipeline and a third gas port and a fourth gas port connected to the exhaust pipeline;
[0013] When the second solenoid valve is closed, the first air port is connected to the second air port, and the third air port is connected to the fourth air port; when the second solenoid valve is opened, the first air port is connected to the fourth air port, and the second air port is connected to the third air port.
[0014] In one embodiment, the drainage pipeline includes a main drainage pipeline and a branch drainage pipeline, the branch drainage pipeline is connected in parallel to the main drainage pipeline, and the second solenoid valve is installed on the branch drainage pipeline.
[0015] In one embodiment, a back-pressure valve is provided on the pipe section in parallel between the main drainage path and the branch drainage path, and the back-pressure valve is used to control the on-off of the main drainage path.
[0016] In one embodiment, a pressure gauge is installed on one side of the back-pressure valve, and the pressure gauge is used to monitor the gas pressure passing through the back-pressure valve.
[0017] In one embodiment, a second needle valve is provided on the drainage branch line upstream of the second solenoid valve, and the second needle valve is used to control the on-off of the drainage branch line.
[0018] In one embodiment, a first needle valve is provided on the drainage pipeline, and the first needle valve is used to control the on-off of the drainage pipeline.
[0019] In one embodiment, a vacuum pump is provided on the drainage pipeline downstream of the first solenoid valve, and the vacuum pump can generate self-priming force to draw gas.
[0020] In one embodiment, the logging controller is electrically connected to a printing device, and the printing device has a function of automatically printing a label according to the logging controller.
[0021] The automatic mud gas collection device provided by the utility model has at least the following beneficial effects compared with the prior art:
[0022] The automatic mud gas collection device of the utility model controls the on-off relationship between the exhaust pipeline and the drainage pipeline by controlling the opening and closing of the first solenoid valve and the second solenoid valve, so as to realize automatic switching among the three modes of collection, emptying and extraction, and realize automatic collection of mud gas. The automatic collection device can automatically monitor the drilling depth and automatically start the collection process when the preset depth is reached, simplifying the steps of manual operation, reducing errors in manual operation, and improving the accuracy and reliability of data. The automated collection process can also improve the efficiency of logging operations, reduce the time required to collect gas samples, and thus reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0024] Figure 1 This is a structural schematic diagram of the automatic mud gas collection device of the utility model embodiment;
[0025] Figure 2 It is a schematic diagram of the emptying mode of the automatic mud gas collection device according to an embodiment of the utility model;
[0026] Figure 3 It is a schematic diagram of the collection mode of the automatic mud gas collection device according to an embodiment of the utility model;
[0027] Figure 4 It is a schematic diagram of the gas extraction mode of the automatic mud gas collection device according to an embodiment of the utility model.
[0028] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.
[0029] Reference numerals:
[0030] 1-first solenoid valve, 11-first main air port, 12-second main air port, 13-third main air port, 2-second solenoid valve, 21-first air port, 22-second air port, 23-third air port, 24-fourth air port, 3-sample bag, 4-discharge port, 5-exhaust pipeline, 6-drainage pipeline, 61-vacuum pump, 62-first needle valve, 63-second needle valve, 64-drainage main pipeline, 65-drainage branch pipeline, 7-back pressure valve, 71-pressure gauge. DETAILED DESCRIPTION
[0031] The utility model will be further described below in conjunction with the accompanying drawings.
[0032] like Figures 1 to 4As shown, the automatic mud gas collection device of the utility model includes: a drainage pipeline 6, one end of which is a sampling port connected to the wellhead, and the other end is a discharge port 4, and a first solenoid valve 1 is arranged on the drainage pipeline 6; an exhaust pipeline 5, one end of which is connected to the first solenoid valve 1, and the other end is connected to the sample bag 3, and the exhaust pipeline 5 and the drainage pipeline 6 are jointly provided with a second solenoid valve 2; a logging controller (not shown in the drawings), which is electrically connected to both the first solenoid valve 1 and the second solenoid valve 2; the logging controller can control the opening and closing of the first solenoid valve 1 and the second solenoid valve 2 respectively, to control the on-off relationship between the exhaust pipeline 5 and the drainage pipeline 6, so as to realize automatic switching among the three modes of collection, emptying and exhausting.
[0033] Specifically, the logging controller is electrically connected to the integrated logging instrument and can communicate in real time, so that it has the function of continuously reading the late depth of drilling. At the same time, a trigger function is set in the logging controller. When the integrated logging instrument detects that the drilling depth reaches a preset value, for example, every 5 meters of depth, the logging controller triggers the first solenoid valve 1 and the second solenoid valve 2 to open and close and automatically start the collection process, that is, automatically switch the mode without manual intervention, thereby realizing reliable automatic collection of sample gas (mud gas). The automatic collection process of the mud gas automatic collection device has three working modes including emptying mode, collection mode and suction mode. Among them, mud gas is extracted from the sampling port, passes through the first solenoid valve 1 and the drainage pipeline 6, and is discharged from the discharge port 4, which belongs to the emptying mode; mud gas is extracted from the sampling port, passes through the first solenoid valve 1 and the drainage pipeline 6, and then passes through the second solenoid valve 2 to the sample bag 3, which belongs to the collection mode; mud gas is extracted from the sample bag 3, passes through the second solenoid valve 2 and the exhaust pipeline 5, and then passes through the first solenoid valve 1 and the drainage pipeline 6 to be discharged from the discharge port 4, which belongs to the exhaust mode.
[0034] In general, the automatic mud gas collection device controls the on-off relationship between the exhaust pipeline 5 and the drainage pipeline 6 by controlling the opening and closing of the first solenoid valve 1 and the second solenoid valve 2, so as to realize automatic switching among the three modes of collection, emptying and extraction, and realize automatic collection of mud gas. The automatic collection device can automatically monitor the drilling depth and automatically start the collection process when the preset depth is reached, simplifying the steps of manual operation, reducing errors in manual operation, and improving the accuracy and reliability of data. The automated collection process can also improve the efficiency of logging operations, reduce the time required to collect gas samples, and thus reduce costs.
[0035] In an example, the first solenoid valve 1 includes a first main gas port 11 and a second main gas port 12 connected to the exhaust pipeline 6 and a third main gas port 13 connected to the exhaust pipeline 5; when the first solenoid valve 1 is closed, the first main gas port 11 is connected to the second main gas port 12; when the first solenoid valve 1 is open, the third main gas port 13 is connected to the second main gas port 12.
[0036] Specifically, when the first solenoid valve 1 is closed, the first main gas port 11 is connected to the second main gas port 12, and the sampling port is connected to the exhaust pipeline 6, which is used in the emptying mode or the collection mode; when the first solenoid valve 1 is switched from closed to open, the second main gas port 12 is disconnected from the first main gas port 11, and the second main gas port 12 is connected to the third main gas port 13, and the exhaust pipeline 5 is connected to the exhaust pipeline 6, which is used in the exhaust mode.
[0037] In one example, the second solenoid valve 2 includes a first air port 21 and a second air port 22 connected to the exhaust pipeline 5, and a third air port 23 and a fourth air port 24 connected to the exhaust pipeline 6; when the second solenoid valve 2 is closed, the first air port 21 is connected to the second air port 22, and the third air port 23 is connected to the fourth air port 24; when the second solenoid valve 2 is open, the first air port 21 is connected to the fourth air port 24, and the second air port 22 is connected to the third air port 23.
[0038] Specifically, when the second solenoid valve 2 is closed, the first air port 21 is connected to the second air port 22, and the third air port 23 is connected to the fourth air port 24. At this time, the sample bag 3 is connected to the air extraction pipeline 5, and the drainage pipeline 6 is connected to the discharge port 4, which is used in the air extraction mode or the emptying mode; when the second solenoid valve 2 is switched from closed to open, the first air port 21 is connected to the fourth air port 24, and the second air port 22 is connected to the third air port 23. At this time, the drainage pipeline 6 is connected to the sample bag 3, and the air extraction pipeline 5 is connected to the discharge port 4, which is used in the collection mode.
[0039] In one example, the drainage pipeline 6 includes a main drainage pipeline 64 and a branch drainage pipeline 65 . The branch drainage pipeline 65 is connected in parallel to the main drainage pipeline 64 . The second solenoid valve 2 is installed on the branch drainage pipeline 65 .
[0040] Specifically, the drainage pipeline 6 is divided into a main drainage pipeline 64 and a drainage branch pipeline 65, and the second solenoid valve 2 is arranged on the drainage branch pipeline 65, so that the sample bag 3 collects mud gas from the drainage branch pipeline 65. This can reduce the pressure and flow rate of the mud gas entering the sample bag 3 from the drainage pipeline 6, and avoid that the mud gas discharged from the sampling port all flows to the sample bag 3, which may cause damage to the sample bag 3 due to excessive flow rate and pressure, which is not conducive to sample collection.
[0041] In one example, a back-pressure valve 7 is provided on the pipe section where the main drainage path 64 and the branch drainage path 65 are connected in parallel. The back-pressure valve 7 is used to control the on-off of the main drainage path 64 .
[0042] In one example, a pressure gauge 71 is installed on one side of the back-pressure valve 7 , and the pressure gauge 71 is used to monitor the pressure of the gas passing through the back-pressure valve 7 .
[0043] In one example, a second needle valve 63 is provided on the drainage branch 65 upstream of the second solenoid valve 2 , and the second needle valve 63 is used to control the on-off of the drainage branch 65 .
[0044] In one example, a first needle valve 62 is provided on the drainage pipeline 6, and the first needle valve 62 is used to control the on-off of the drainage pipeline 6. The first needle valve 62 is provided in a pipe section close to the first solenoid valve 1 and is located upstream of the drainage branch 65.
[0045] In one example, a vacuum pump 61 is provided on the drainage pipeline 6 downstream of the first solenoid valve 1, and the vacuum pump 61 can generate self-priming force to extract gas. The vacuum pump 61 is generally used in the gas extraction mode to extract the gas in the sample bag 3, and after being sucked out through the second solenoid valve 2, the gas extraction pipeline 5 and the first solenoid valve 1, it is discharged to the discharge port 4 through the drainage pipeline 6.
[0046] In one example, the logging controller is electrically connected to a printing device (not shown in the drawings), which has the function of automatically printing a label according to the logging controller. The label can record detailed information about the sampling, including the collection time, sample depth, and the methane, ethane, and propane gas content in the sample. This ensures that each collection result is recorded to avoid loss.
[0047] Furthermore, the specific operation is that when the comprehensive logging instrument detects that the late depth reaches the set value, the automatic collection device automatically collects gas, first enters the exhaust mode for 5 seconds, and then immediately enters the collection mode, the collection time is 20 seconds, and then switches to the emptying mode after 20 seconds. At the same time, the printing device connected to the logging controller prints out a label. The sample bag 3 can be replaced immediately, the staff removes the sample bag 3, affixes the label automatically printed by the printing device, and then connects the new sample bag 3, waiting for the next automatic collection process.
[0048] In order to better illustrate the utility model, the working process of the automatic mud gas collection device is further described below in conjunction with the accompanying drawings.
[0049] The working process of the mud gas automatic collection device is mainly to achieve automatic collection by automatically switching between the three modes of collection, emptying and exhaust. The emptying mode is a standby state, where air is taken in from the sampling port to ensure that the exhaust pipeline 6 and each component remain unobstructed, and passes through the first solenoid valve 1 and the second solenoid valve 2 in turn, and is emptied in two ways. The exhaust mode is an exhaust state. Before sampling, the sample bag 3 needs to empty the gas in each pipeline and each component to ensure the purity of the sample gas during sampling. The collection mode is a sampling state, and the sample gas passes through the first solenoid valve 1 and the second solenoid valve 2 in turn into the sample bag 3 to complete the sampling. The switching order of these three working modes: the emptying mode is normal. When the preset depth is reached, the exhaust mode is entered first. After the gas is emptied, the collection mode is entered. After the collection is completed, it returns to the emptying mode.
[0050] Specifically, if Figure 2 As shown, in the emptying mode, the first solenoid valve 1 is in a closed state, the second solenoid valve 2 is in a closed state, and the second solenoid valve 2 is connected to the sampling and exhausting branch 65 and the exhaust port 4. The gas at the sampling port passes through the first solenoid valve 1, the vacuum pump 61, the first needle valve 62 and the back pressure valve 7, and is discharged from the exhaust port 4, and the other way passes through the first solenoid valve 1, the vacuum pump 61, the first needle valve 62, the second needle valve 63, and the second solenoid valve 2, and is discharged from the exhaust port 4.
[0051] like Figure 4 As shown, in the air extraction mode, the first solenoid valve 1 is in an open state, the first solenoid valve 1 connects the air extraction pipeline 5 and the drainage pipeline 6, and the second solenoid valve 2 is in a closed state, the second solenoid valve 2 connects the sample bag 3 and the air extraction pipeline 5. The gas in the sample bag 3 and the pipeline passes through the second solenoid valve 2, the air extraction pipeline 5, the first solenoid valve 1, the vacuum pump 61, the first needle valve 62, the back pressure valve 7 (or the drainage branch 65), and is discharged from the discharge port 4.
[0052] like Figure 3 As shown, in the collection mode, the first solenoid valve 1 is in a closed state, the second solenoid valve 2 is in an open state, and the second solenoid valve 2 connects the exhaust branch 65 with the sample bag 3. The gas at the sampling port passes through the first solenoid valve 1, the vacuum pump 61, the first needle valve 62, the second needle valve 63, and the second solenoid valve 2, and enters the sample bag 3.
[0053] It should be noted that the vacuum pump 61, the first needle valve 62, the second needle valve 63 and the back pressure valve 7 can all be electrically connected to the logging controller and can be controlled to open and close by the logging controller to ensure that the mud gas automatic collection device can be adaptively opened and closed in the corresponding working mode during the automatic collection process.
[0054] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A mud gas automatic collection device, characterized in that: The device comprises: A drainage pipeline, one end of which is a sampling port connected to the wellhead, and the other end is a discharge port, and a first solenoid valve is provided on the drainage pipeline; An air extraction pipeline, one end of which is connected to the first solenoid valve, and the other end of which is connected to the sample bag, and a second solenoid valve is provided on the air extraction pipeline and the drainage pipeline; A logging controller, electrically connected to the first solenoid valve and the second solenoid valve; The logging controller can control the opening and closing of the first solenoid valve and the second solenoid valve respectively to control the on-off relationship between the air extraction pipeline and the drainage pipeline, so as to realize automatic switching among the three modes of collection, emptying and air extraction.
2. The automatic mud gas collection device according to claim 1, characterized in that: The first solenoid valve comprises a first main gas port and a second main gas port connected to the exhaust pipeline and a third main gas port connected to the exhaust pipeline; When the first solenoid valve is closed, the first main air port is communicated with the second main air port; when the first solenoid valve is opened, the third main air port is communicated with the second main air port.
3. The automatic mud gas collection device according to claim 1, characterized in that: The second solenoid valve comprises a first gas port and a second gas port connected to the gas extraction pipeline, and a third gas port and a fourth gas port connected to the exhaust pipeline; When the second solenoid valve is closed, the first air port is connected to the second air port, and the third air port is connected to the fourth air port; when the second solenoid valve is opened, the first air port is connected to the fourth air port, and the second air port is connected to the third air port.
4. The automatic mud gas collection device according to claim 1, characterized in that: The drainage pipeline includes a main drainage pipeline and a drainage branch pipeline, the drainage branch pipeline is connected in parallel to the main drainage pipeline, and the second solenoid valve is installed on the drainage branch pipeline.
5. The automatic mud gas collection device according to claim 4, characterized in that: A back-pressure valve is provided on the pipe section where the main drainage route and the branch drainage route are connected in parallel, and the back-pressure valve is used to control the on-off of the main drainage route.
6. The automatic mud gas collection device according to claim 5, characterized in that: A pressure gauge is installed on one side of the back pressure valve, and the pressure gauge is used to monitor the gas pressure passing through the back pressure valve.
7. The automatic mud gas collection device according to claim 4, characterized in that: A second needle valve is provided on the drainage branch line at the upstream of the second solenoid valve, and the second needle valve is used to control the on-off of the drainage branch line.
8. The automatic mud gas collection device according to claim 1, characterized in that: The drainage pipeline is provided with a first needle valve, and the first needle valve is used to control the on-off of the drainage pipeline.
9. The automatic mud gas collection device according to claim 1, characterized in that: A vacuum pump is provided on the drainage pipeline downstream of the first solenoid valve, and the vacuum pump can generate self-priming force to draw gas.
10. The automatic mud gas collection device according to claim 1, characterized in that: The logging controller is electrically connected to a printing device, and the printing device has the function of automatically printing a label according to the logging controller.