Gas collecting device for collecting helium in slurry
By designing a gas collecting device in the mud tank and using designs such as gas replenishment pipes and buoyancy structures, the problem of helium escape is solved, the collection effectiveness and exploration reliability of helium is improved, operation is simplified and costs are reduced.
Patent Information
- Application Number
- CN202420918497.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing electric degassing device is far from the mud outlet, and cannot effectively collect helium escaped in the mud outlet pipeline, resulting in a reduced helium collection effectiveness, affecting the reliability of gas reservoir exploration.
Design an air collecting device, placed in a mud tank, fixed at the exit position of the mud pipeline, and connected to the mud outlet pipe through the installed air replenishment pipe, directly direct the escaped helium gas into the air collecting chamber, combining the buoyancy structure, inclined baffle and The deflector is designed to ensure that helium does not escape and is easy to collect.
The timely collection of helium is achieved, which reduces helium escape, improves the reliability and effectiveness of helium reservoir exploration, and reduces labor costs and time costs.
Smart Images
Figure CN222141234U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oil and gas exploration and development, in particular to a gas collecting device for collecting helium in mud. Background Art
[0002] Helium is a rare inert gas that is widely used in military, medical, industrial, aviation and other high-tech fields and plays a very important role.
[0003] Existing gas logging technology collects gas in the drilling fluid that returns to the ground and measures its material composition, thereby indirectly evaluating the formation. However, in the process of the drilling fluid returning to the ground through the annulus, as the temperature, pressure and other related environmental conditions change, helium and other gases that are not easily soluble in the drilling fluid will rise to the ground with the drilling fluid and directly escape into the air through the liquid surface. The electric degassing device currently used has problems such as being installed far away from the mud outlet and being unable to collect helium escaping from the mud outlet pipeline, which seriously reduces the effectiveness of helium collection and affects the reliability of helium gas reservoir exploration.
[0004] In order to solve the above problems, the utility model designs a gas collecting device for collecting helium in mud. The device is placed in the mud tank and fixed at the outlet of the mud pipeline. The gas supply pipe provided in the device is directly connected to the mud outlet pipeline, so that the helium escaping from the pipeline mud can be replenished into the gas collecting chamber in time. The device can conveniently collect gas in the mud in time, reduce helium escape, and improve the reliability and effectiveness of helium gas reservoir exploration. Utility Model Content
[0005] In order to solve the problems of helium gas easy to escape in gas logging and causing difficulty in collecting, the utility model aims to provide a gas collection device for collecting helium in mud. It effectively solves the problems of helium gas escape at the mud outlet and difficulty in collecting helium by electric degassing device, and improves the reliability and effectiveness of obtaining helium in gas logging. The gas collection device has a simple structure, low cost, easy operation on site and high practicality.
[0006] In order to achieve the purpose of this utility model, the technical solution adopted is:
[0007] A gas collecting device for collecting helium in mud, comprising:
[0008] A gas collecting chamber, on the side of which a plurality of buoyancy structures are arranged, wherein the buoyancy structures are structures that are wide at the top and narrow at the bottom;
[0009] An inclined baffle is provided on the front side of the air collecting chamber, and a guide plate is provided on the rear side of the air collecting chamber;
[0010] The top of the gas collecting chamber is provided with an anti-blocking pipe extending out of the top plate of the gas collecting chamber;
[0011] A first air supply pipe and an air extraction pipe are arranged on the anti-blocking pipe;
[0012] The first air supply pipe is connected to the mud outlet pipe, and the helium escaping from the mud outlet pipe is input into the gas collecting chamber through the first air supply pipe;
[0013] The gas extraction pipe is connected to an on-site gas collection device to facilitate on-site gas collection for detection.
[0014] In a preferred embodiment of the utility model, the buoyancy structure is a first buoy and a second buoy welded on both sides of the air collecting chamber, the first buoy and the second buoy are both cylindrical structures, the front and rear ends of the cylindrical structure are beveled downward, and the angle between the front and rear end surfaces and the horizontal direction is 30°, and the height of the buoy submerged in the mud is not less than 1 / 3.
[0015] In a preferred embodiment of the present invention, the inclined baffle is an inclined trapezoidal baffle.
[0016] In a preferred embodiment of the present invention, the guide plate is composed of an inclined first guide plate and a connected second guide plate in the horizontal direction, the second guide plate is a wake plate, and the length of the wake plate is not less than 10 cm.
[0017] In a preferred embodiment of the present invention, a second air supply pipe is provided on a side of the top plate close to the anti-blocking pipe.
[0018] In a preferred embodiment of the present invention, the diameter of the first air supply pipe or the second air supply pipe is larger than the diameter of the air extraction pipe.
[0019] In a preferred embodiment of the present invention, a handle is provided on the top plate, and the handle is preferably made of stainless steel.
[0020] In a preferred embodiment of the present invention, the horizontal distance between the handle arranged on the top plate and the anti-blocking pipe is not less than 20 centimeters.
[0021] The beneficial effects of the utility model are:
[0022] The utility model has a simple structure, low manufacturing cost, and is easy to use. It improves the efficiency of manual sampling and reduces labor and time costs. During the working process, helium can be collected in time, helium escape can be reduced, the effectiveness and reliability of helium collection can be improved, and a strong support can be provided for the timely and accurate identification of helium reservoirs. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .
[0024] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .
[0025] Figure 3 The structure of the utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of the well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.
[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0028] like Figure 1-3 A gas collecting device for collecting helium in mud is shown, including a gas collecting chamber 100, on the side of which a plurality of buoyancy structures 200 are arranged. The buoyancy structure 200 is a structure that is wide at the top and narrow at the bottom. The purpose is to allow the buoyancy structure 200 to be partially immersed in the mud and reduce the impact force caused by the mud flow on the buoyancy structure.
[0029] The air collecting chamber 100 is surrounded by external enclosures on all sides and the top, and the total length of the air collecting chamber 100 is not greater than the length of the buoyancy structure 200 .
[0030] An inclined baffle 110 is provided at the front side, and the inclined baffle 110 is an inclined trapezoidal baffle.
[0031] A guide plate 120 is provided at the rear side of the air collecting chamber 100. The guide plate 120 is composed of an inclined first guide plate 121 and a connected second guide plate 122 in the horizontal direction. The second guide plate 122 is a wake plate, and the length of the wake plate is not less than 10 cm.
[0032] An anti-blocking pipe 130 extending out of the top plate of the gas collecting chamber 100 is provided on the top of the gas collecting chamber 100;
[0033] A first air supply pipe 141 and an air extraction pipe 150 are provided on the anti-blocking pipe 130 . The first air supply pipe 141 is connected to the mud outlet pipe (not shown in the figure), and the helium escaping from the mud outlet pipe (not shown in the figure) is input into the gas collecting chamber 100 through the first air supply pipe 141 .
[0034] The gas extraction pipe 150 is connected to the on-site gas collection device to facilitate on-site gas collection for detection.
[0035] The buoyancy structure 200 is a first buoy 210 and a second buoy 220 welded on both sides of the gas collecting chamber 100. The first buoy 210 and the second buoy 220 are both cylindrical structures. The front and rear ends of the cylindrical structure are beveled downward, and the angle between the front and rear end surfaces and the horizontal direction is 30°. The height of the first buoy 210 and the second buoy 220 immersed in the mud is not less than 1 / 3. This ensures that the helium collected at the mud outlet will not escape from the gas collecting chamber.
[0036] The weld is located at the lower middle portion of the first buoy 210 and the second buoy 220 , which is 1 / 3 of the height of the first buoy 210 and the second buoy 220 .
[0037] Specifically, the float is a cylinder with a diameter of 80 mm and a length of 400 mm. The front and rear sections are each sloped downward by 37 mm, and the horizontal angle between the front and rear end surfaces and the float is 30°.
[0038] A second air supply pipe 142 is disposed on one side of the top plate of the air collecting chamber 100 close to the anti-blocking pipe 130 . The diameter of the first air supply pipe 141 or the second air supply pipe 142 is greater than the diameter of the air extraction pipe 150 .
[0039] Specifically, an anti-blocking pipe 130 of Φ80×80 mm is provided, a first air supply pipe 141 or a second air supply pipe 142 of Φ10×50 mm is provided, and an air extraction pipe 150 of Φ6×50 mm is provided.
[0040] A handle 160 is provided on the top plate. The handle 160 is made of stainless steel. The handle 160 is used to fix the gas collecting device to the mud outlet on site, and is also convenient for construction workers to move the device.
[0041] The horizontal distance between the handle 160 provided on the top plate and the anti-blocking pipe 130 is not less than 20 centimeters.
[0042] During on-site use, the trapezoidal baffle at the front, the horizontal wake plate at the rear and the buoys on both sides are ensured to be immersed in the mud, so that the helium in the gas collecting chamber cannot escape.
[0043] At the drilling site, place the gas collecting device in the mud tank and use ropes to fix the device in the mud tank as close to the mud outlet as possible. Connect the first air supply pipe to the mud outlet pipe and the air extraction pipe to the on-site air extraction device to collect gas samples in the mud in real time for detection.
[0044] The utility model has a simple structure, low cost, easy operation on site and high reliability. The drilling construction is not affected during the operation, and gas can be continuously collected in a non-shut-in state. It is suitable for detecting formation materials in mud during the drilling construction process at the oil exploration site. Helium can be collected in time during the operation, reducing helium escape, improving the effectiveness and reliability of helium collection, and providing strong support for the timely and accurate identification of helium reservoirs.
Claims
1. A gas collecting device for collecting helium in mud, characterized in that: include: A gas collecting chamber, on the side of which a plurality of buoyancy structures are arranged, wherein the buoyancy structures are structures that are wide at the top and narrow at the bottom; An inclined baffle is provided on the front side of the air collecting chamber, and a guide plate is provided on the rear side of the air collecting chamber; The top of the gas collecting chamber is provided with an anti-blocking pipe extending out of the top plate of the gas collecting chamber; A first air supply pipe and an air extraction pipe are arranged on the anti-blocking pipe; The first air supply pipe is connected to the mud outlet pipe, and the helium escaping from the mud outlet pipe is input into the gas collecting chamber through the first air supply pipe; The gas extraction pipe is connected to an on-site gas collection device to facilitate on-site gas collection for detection.
2. A gas collecting device for collecting helium in mud as claimed in claim 1, characterized in that: The buoyancy structure is a first buoy and a second buoy welded on both sides of the air collecting chamber. The first buoy and the second buoy are both cylindrical structures. The front and rear ends of the cylindrical structure are beveled downward, and the angle between the front and rear end surfaces and the horizontal direction is 30°. The height of the buoy submerged in the mud is not less than 1 / 3.
3. A gas collecting device for collecting helium in mud as claimed in claim 1, characterized in that: The inclined baffle is an inclined trapezoidal baffle.
4. A gas collecting device for collecting helium in mud as claimed in claim 1, characterized in that: The guide plate is composed of an inclined first guide plate and a connected second guide plate in the horizontal direction, the second guide plate is a wake plate, and the length of the wake plate is not less than 10 cm.
5. A gas collecting device for collecting helium in mud as claimed in claim 1, characterized in that: A second air supply pipe is arranged on one side of the top plate close to the anti-blocking pipe.
6. A gas collecting device for collecting helium in mud as claimed in claim 5, characterized in that: The diameter of the first air supply pipe or the second air supply pipe is larger than the diameter of the air extraction pipe.
7. A gas collecting device for collecting helium in mud as claimed in claim 1, characterized in that: A handle is arranged on the top plate.
8. A gas collecting device for collecting helium in mud as claimed in claim 7, characterized in that: The horizontal distance between the handle arranged on the top plate and the anti-blocking pipe is not less than 20 centimeters.