Visual well exploring device for oil and gas well

Abstract

The utility model relates to a visual well exploring device for an oil and gas well, which comprises a well exploring cylinder provided with a hollow shell communicated with gas in the oil and gas well. A fan, a heating assembly and a detection assembly are sequentially arranged in the shell according to the airflow trend. The detection assembly comprises a camera arranged in the cover body. And the fan is used for conducting heat of the heating assembly to the cover body through the airflow. The air in the hoistway is driven by the fan, and heat generated by the heating assembly is conducted to the cover body, so that the temperature of the cover body is increased. The temperature of the cover body is higher than the environment temperature in the oil-gas well, water vapor in the oil-gas well is difficult to condense on the surface of the cover body to form liquid beads, and therefore the detection effect of the camera is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of exploration well devices, and particularly relates to a visual exploration well device for oil and gas wells. Background Art

[0002] Before the exploitation of oil and gas wells, detection is required, and the internal conditions of oil and gas wells can be observed intuitively and effectively through a visual exploration well device.

[0003] A visual logging device for oil and gas wells is introduced in the Chinese utility model patent (CN213331066U), which is stabilized and limited by multiple groups of centralizers. Since the centralizers of the visual logging device for oil and gas wells change the length by means of screw adjustment to adapt to the diameter of the wellbore of the oil and gas well. When placing the visual logging device, each group of centralizers needs to be adjusted, resulting in cumbersome operation. Moreover, due to the high humidity inside the wellbore of the oil and gas well, water vapor will liquefy on the surface of the probe to form water droplets. The visual logging device for oil and gas wells cleans the surface of the probe through bristles, but it is very easy to leave liquid stains on the surface of the probe after cleaning with bristles, which greatly affects the observation effect. Summary of the Utility Model

[0004] Based on the above problems existing in the prior art, the utility model provides a visual exploration well device for oil and gas wells, which can increase the temperature of the probe, avoid water vapor from condensing into droplets on the probe, and thus improve the observation effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a visual exploration well device for oil and gas wells, including an exploration well barrel, which includes an exploration well barrel with a hollow shell communicating with the gas of the oil and gas well. A fan, a heating component and a detection component are sequentially arranged in the shell. The detection component includes a camera arranged in a cover body.

[0006] Wherein, the fan is configured to suck the gas of the oil and gas well into the shell, flow through the heating component to the detection component, so as to conduct the heat generated by the heating component to the cover body.

[0007] Furthermore, the heating component includes a heating element, a heat conducting element for isolating the heating element from the air flow, and a first bracket connecting the heat conducting element and the shell.

[0008] Furthermore, the detection component further includes a second bracket connecting the cover body and the shell. A motor is also arranged in the cover body, and a third bracket for installing the camera is arranged at the output end of the motor.

[0009] Further, the visual exploration well device further includes a connecting rope connecting the exploration well tube, and a conducting wire is arranged on the connecting rope, and the conducting wire is electrically connected to at least the blower, the heating element and the camera.

[0010] Further, the visual exploration well device further includes a wellhead frame installed at the wellhead of the oil and gas well and an annular airbag for blocking the wellhead of the oil and gas well. A gasket is arranged on the circumferential side wall at the central ring hole of the annular airbag, and the connecting rope extends through the wellhead frame and the annular airbag.

[0011] Further, the visual exploration well device further includes an I-shaped pulley for winding the connecting rope.

[0012] Further, a support assembly is installed outside the exploration well tube, and the support assembly includes

[0013] a mounting member sleeved on the housing,

[0014] at least two elastic telescopic rods evenly spaced circumferentially and installed on the side wall of the mounting member,

[0015] wherein, the elastic telescopic rod is configured to be able to abut against the well wall of the oil and gas well, so that the exploration well tube is located at the axis of the oil and gas well.

[0016] Further, a roller is arranged at one end of the elastic telescopic rod away from the mounting member, and the roller is configured to be able to roll along the well wall of the oil and gas well.

[0017] Further, the elastic telescopic rod is hinged to the mounting member, and the elastic telescopic rod is configured to be able to rotate towards both ends of the exploration well tube.

[0018] Further, a resisting member is arranged on the mounting member in the rotation direction of the elastic telescopic rod, and a spring connecting the elastic telescopic rod is arranged on the resisting member.

[0019] The beneficial effects of the present utility model are as follows: A visual exploration well device for an oil and gas well provided by the present utility model includes an exploration well tube, and the exploration well tube has a hollow housing that communicates with the gas in the oil and gas well. Inside the housing, there are a blower, a heating assembly and a detection assembly arranged in sequence according to the air flow direction. The detection assembly includes a camera arranged in a cover body. Among them, the blower is configured to conduct the heat of the heating assembly to the cover body through the air flow. By driving the gas inside the wellbore with the blower, the heat generated by the heating assembly is conducted to the cover body, so that the temperature of the cover body rises. The temperature of the cover body is higher than the ambient temperature in the oil and gas well, and the water vapor in the oil and gas well is difficult to condense into liquid beads on the surface of the cover body, thus ensuring the detection effect of the camera.

[0020] In addition, the support assembly arranged outside the exploration wellbore includes an elastic telescopic rod, a resisting member installed in the rotation direction of the elastic telescopic rod, and a spring. Under the combined action of the elastic telescopic rod, the resisting member and the spring, there is a sufficient detection distance between the camera and the well wall. And it also enables the exploration wellbore to be applicable to oil and gas wells with various diameter sizes. Brief Description of the Drawings

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 Shown is a schematic structural diagram of a visual exploration well device for oil and gas wells.

[0023] Figure 2 Shown is a schematic internal structure diagram of the exploration wellbore.

[0024] Figure 3 Shown as Figure 1 A partial enlarged view of area A in

[0025] Among them, each reference numeral in the figure: 1, wellhead frame; 2, annular airbag; 3, connecting rope; 4, winding wheel; 5, exploration wellbore;

[0026] 10, housing; 20, fan; 30, heating assembly; 31, heating element; 32, heat conducting member; 33, first bracket; 40, detection assembly; 41, second bracket; 42, cover body; 421, gap; 43, motor; 44, camera; 45, third bracket; 50, support assembly; 51, mounting member; 52, elastic telescopic rod; 53, roller; 54, resisting member; 55, spring. Detailed Embodiment

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be described in detail below in conjunction with the drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present utility model in a schematic manner, so it only shows the components related to the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Refer to Figure 1As shown in the figure, a visual well exploration device for oil and gas wells provided by the present utility model includes a wellhead frame 1 for installation at the wellhead, an annular airbag 2 for sealing the wellhead, and a well exploration barrel 5 for entering the interior of the oil and gas well for exploration. One end of the well exploration barrel 5 close to the wellhead of the oil and gas well is provided with a connecting rope 3. The connecting rope 3 passes through the annular airbag 2 and the wellhead frame 1 and is wound around a winding wheel 4. By rotating the winding wheel 4, the connecting rope 3 can be retracted or released, and thus the well exploration barrel 5 can be lifted or lowered in the oil and gas well.

[0029] In some embodiments, the annular airbag 2 is installed at the wellhead position. The annular airbag 2 can be inflated through an external air source, so that the annular airbag 2 expands and bulges. The circumferential side wall of the expanded and bulged annular airbag 2 abuts against the side wall of the wellhead, so as to achieve the purpose of sealing the wellhead and prevent a large amount of toxic and harmful gases in the oil and gas well from overflowing.

[0030] In some embodiments, a cushion body (not shown in the figure) is attached to the circumferential side wall at the central ring hole of the annular airbag 2. The cushion body can prevent the connecting rope 3 from repeatedly rubbing against the circumferential side wall at the central ring hole of the annular airbag 2, thereby causing the annular airbag 2 to be damaged. It can be understood that strengthening and thickening the circumferential side wall at the central ring hole of the annular airbag 2 can also avoid the annular airbag 2 from being damaged.

[0031] In some embodiments, a wire (not shown in the figure) for electrically connecting the well exploration barrel 5 and an external power source is provided on the connecting rope 3. The wire can be wound inside the connecting rope 3 to protect the wire. The wire can also be temporarily fixed on the connecting rope 3 through cable ties to reduce the construction cost.

[0032] Reference Figure 2 As shown in the figure, in some embodiments, the well exploration barrel 5 includes a hollow shell 10 communicating with the gas in the oil and gas well, a fan 20 installed in the hollow shell 10, a heating component 30 arranged on one side of the output end of the fan 20, and a detection component 40 installed at the end of the shell 10. The fan 20, the heating component 30, and the detection component 40 are all electrically connected to an external power source through the wire. Under the electrical driving action of the external power source, the heating component 30 converts electrical energy into heat and dissipates it outward. Under the electrical driving action of the external power source, the fan 20 blows the gas in the oil and gas well towards the heating component 30. The gas brings the heat dissipated by the heating component 30 to the detection component 40 to heat the detection component 40 and avoid the generation of condensed liquid beads on the detection component 40.

[0033] In some of these embodiments, the shell 5 is generally a hollow cylinder with openings at both ends. The fan 20, the heating component 30, and the detection component 40 are arranged in sequence in the shell 5 along the direction of the air flow.

[0034] In some embodiments, the heating component 30 includes a heating element 31 electrically connected to the wire, a heat conducting member 32 disposed outside the heating element 31, and a first bracket 33 connecting the heat conducting member 32 and the housing 10. The heating element 31 can be a heating wire or a heating sheet. Under the electrical driving action of an external power source, the heating element 31 can generate heat. The heat conducting member 32 completely wraps the heating element 31 to prevent the high-temperature and high-heat heating element 31 from directly contacting the gas in the wellbore. The temperature on the surface of the heat conducting member 32 is in the range of 140°C to 180°C. On the one hand, it can prevent gases such as hydrogen sulfide and methane in the oil and gas wellbore from reacting with a small amount of oxygen in the wellbore due to excessive temperature. On the other hand, it can also prevent some rubber components in the exploration wellbore 5 from aging due to high temperature, thereby improving the service life of the product.

[0035] In some embodiments, the heat conducting member 32 can be aluminum nitride or silicon nitride ceramic, so as to evenly transfer the heat generated by the heating element 31. In some other embodiments, the heat conducting member 32 can also be a sealed box body filled with alkylbenzene-based heat conducting oil or alkylnaphthalene-based heat conducting oil.

[0036] In some embodiments, the detection component 40 includes a second bracket 41, a hollow and sealed transparent cover 42 mounted on the second bracket 41, a motor 43 mounted in the cover 42 and electrically connected to the wire, and a camera 44 disposed at the output end of the motor 43 and electrically connected to the wire. There is a gap 421 for air flow between the cover 42 and the housing 10. The gap 421 provides a channel for the gas to leave the inside of the exploration wellbore 5 on the one hand, and increases the contact time between the gas and the cover 42 on the other hand. A third bracket 45 is mounted at the output end of the motor 43, and the camera 44 is fixedly mounted on the third bracket 45. Under the electrical driving of an external power source, the output end of the motor 43 drives the third bracket 45 to rotate, and then drives the camera 44 to rotate, so as to achieve multi-angle visual detection. In some of these embodiments, the camera 44 uses a wide-angle camera to facilitate visual detection at a large angle.

[0037] In a specific embodiment, during the detection process of the visual exploration well device in the oil and gas well, the external power source electrically drives at least the blower 20, the heating element 31, and the camera 44. The blower 20 sucks the gas in the wellbore from one end of the exploration wellbore 5 close to the wellhead and blows it towards the heat conducting member 32. The heat conducting member 32 evenly transfers the heat of the heating element 31 to the surface of the heat conducting member 32. The gas blown towards the heat conducting member 32 brings the heat to and conducts it to the cover 42, raising the temperature of the cover 42 and preventing water droplets from condensing on the surface of the cover 42, thereby improving the detection effect of the camera 44. The excess gas then leaves through the gap 421 between the cover 42 and the housing 10.

[0038] In some embodiments, the visualization exploration well device further includes a plurality of support components 50 installed outside the exploration well barrel 5, and two support components 50 are arranged at intervals along the axial direction of the exploration well barrel 5.

[0039] Combined with Figure 1 and Figure 3 As shown, the support component 50 includes a mounting member 51 sleeved outside the housing 10 and elastic telescopic rods 52 with one end connected to the circumferential side wall of the mounting member 51. At least two elastic telescopic rods 52 are evenly arranged along the circumferential side wall of the mounting member 51. A roller 53 is provided at the end of the elastic telescopic rod 52 away from the fixing member, and the roller 53 can roll on the well wall of the oil and gas well. The elastic telescopic rod 52 can contract to a certain length under the action of axial pressure. When the axial pressure decreases or disappears, the elastic telescopic rod 52 can extend to a certain length. The elastic telescopic rod 52 is a well-known prior art to those skilled in the art and will not be elaborated here too much.

[0040] When the exploration well barrel 5 is lowered into the oil and gas well, the exploration well barrel 5 abuts against the well wall of the oil and gas well through the elastic telescopic rods 52 and the rollers 53, ensuring that the exploration well barrel 5 is always located at the axis position of the oil and gas well. Thus, it can ensure that there is enough detection distance between the camera 44 and the well wall. Due to the telescopic property of the elastic telescopic rods 52, the exploration well barrel 5 can be applicable to oil and gas wells with various diameters.

[0041] Combined with Figure 3 As shown, in some embodiments, the elastic telescopic rods 52 are connected to the mounting member 51 in a hinged manner. Once the wellbore size of the oil and gas well is smaller than the minimum circumferential size of the exploration well barrel 5 equipped with the elastic telescopic rods 52, the elastic telescopic rods 52 can be rotated towards both ends of the exploration well barrel 5, so that the included angle between the axis of the elastic telescopic rod 52 and the axis of the exploration well barrel 5 is less than 90 degrees, to further reduce the circumferential size of the exploration well barrel 5 equipped with the elastic telescopic rods 52, thereby being applicable to oil and gas wells with smaller diameters. It can be understood that in some other embodiments, the elastic telescopic rods 52 can also rotate along the circumferential direction of the exploration well barrel 5, and the purpose of reducing the circumferential size of the exploration well barrel 5 equipped with the elastic telescopic rods 52 can also be achieved.

[0042] In some of these preferred embodiments, the mounting member 51 is further provided with abutting members 54 located on the upper and lower sides of the elastic telescopic rods 52. A spring 55 is arranged between the abutting member 54 and the elastic telescopic rod 52, and both ends of the spring 55 are respectively connected to the abutting member 54 and the elastic telescopic rod 52. When the included angle between the axis of the elastic telescopic rod 52 and the axis of the exploration well barrel 5 is less than 90 degrees, the spring 55 is compressed or stretched. Under the elastic force of the spring 55, the roller 53 at the end of the elastic telescopic rod 52 firmly abuts against the inner wall of the oil and gas well. After the exploration well barrel 5 is taken out of the oil and gas well, under the elastic force of the spring 55, the included angle between the axis of the elastic telescopic rod 52 and the axis of the exploration well barrel 5 can quickly return to 90 degrees.

[0043] The beneficial effect of a visual well exploration device for oil and gas wells provided by the present utility model lies in that it includes a well exploration barrel 5, and the well exploration barrel 5 has a hollow housing 10 that communicates with the gas in the oil and gas well. Inside the housing 10, there are a fan 20, a heating component 30, and a detection component 40 arranged in sequence according to the air flow direction. The detection component 40 includes a camera 44 disposed within a cover 42. Among them, the fan 20 is configured to conduct the heat of the heating component 30 to the cover 42 through the air flow. By driving the gas inside the wellbore with the fan 20, the heat generated by the heating component 30 is conducted to the cover 42, causing the temperature of the cover 42 to rise. The temperature of the cover 42 is higher than the ambient temperature inside the oil and gas well, and it is difficult for the water vapor inside the oil and gas well to condense into liquid beads on the surface of the cover 42, thereby ensuring the detection effect of the camera 44.

[0044] In addition, the support assembly 50 disposed outside the well exploration barrel 5 includes an elastic telescopic rod 52, a resisting member 54 installed in the rotational direction of the elastic telescopic rod 52, and a spring 55. Under the combined action of the elastic telescopic rod 52, the resisting member 54, and the spring 55, there is a sufficient detection distance between the camera 44 and the well wall. And it also enables the well exploration barrel 5 to be applicable to oil and gas wells with various bore diameters.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0047] Based on the inspiration of the ideal embodiments of the present utility model above, through the above description, relevant staff can completely make various changes and modifications without departing from the scope of the present utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A visual well exploration device for oil and gas wells, characterized in that: The invention comprises a well exploration shaft (5) having a hollow shell (10) which is in communication with the gas of the oil and gas well, wherein a fan (20), a heating component (30) and a detection component (40) are sequentially arranged in the shell (10), and the detection component (40) comprises a camera (44) arranged in a cover body (42). The fan (20) is configured to draw the oil and gas well gas into the housing (10), and flow the gas through the heating component (30) to the detection component (40), thereby conducting the heat generated by the heating component (30) to the cover (42).

2. The visualization well exploration device for oil and gas wells according to claim 1, characterized in that: The heating assembly (30) comprises a heating element (31), a heat conducting element (32) isolating the heating element (31) from the oil and gas well gas, and a first bracket (33) connecting the heat conducting element (32) and the housing (10).

3. The visualization well exploration device for oil and gas wells according to claim 2, characterized in that: The detection assembly (40) further comprises a second bracket (41) connecting the cover body (42) and the housing (10), a motor (43) is also arranged in the cover body (42), and a third bracket (45) for mounting the camera (44) is arranged at the output end of the motor (43).

4. The visualization well exploration device for oil and gas wells according to claim 2 or 3, characterized in that: The visual well exploration device also includes a connecting rope (3) connected to the well exploration barrel (5), and a conducting wire is provided on the connecting rope (3), and the conducting wire is electrically connected to at least the fan (20), the heating element (31) and the camera (44).

5. The visualization well exploration device for oil and gas wells according to claim 4, characterized in that: The visualization well exploration device also includes a wellhead frame (1) installed at the wellhead of the oil and gas well and an annular airbag (2) for sealing the wellhead of the oil and gas well, the circumferential side wall at the central annular hole of the annular airbag (2) is provided with a cushion body, and the connecting rope (3) extends through the wellhead frame (1) and the annular airbag (2).

6. The visualization well exploration device for oil and gas wells according to claim 5, characterized in that: The visual well exploration device also includes an I-shaped wheel (4) for winding the connecting rope (3).

7. The visual well exploration device for oil and gas wells according to any one of claims 1 to 3, characterized in that: A support assembly (50) is installed outside the exploration wellbore (5), and the support assembly (50) comprises a mounting member (51) which is sleeved on the housing (10). at least two elastic telescopic rods (52) mounted on the side wall of the mounting member (51) at even intervals in the circumferential direction, The elastic telescopic rod (52) is configured to be able to abut against the well wall of the oil and gas well, so that the exploration wellbore (5) is located at the axis of the oil and gas well.

8. The visualization well exploration device for oil and gas wells according to claim 7, characterized in that: A roller (53) is provided at one end of the elastic telescopic rod (52) away from the mounting member (51), and the roller (53) is configured to be able to roll along the well wall of the oil and gas well.

9. The visualization well exploration device for oil and gas wells according to claim 7, characterized in that: The elastic telescopic rod (52) is hinged to the mounting member (51), and the elastic telescopic rod (52) is configured to be able to rotate toward two ends of the exploration wellbore (5).

10. The visualization well exploration device for oil and gas wells according to claim 9, characterized in that: The mounting member (51) is provided with a supporting member (54) located in the rotation direction of the elastic telescopic rod (52), and the supporting member (54) is provided with a spring (55) connected to the elastic telescopic rod (52).

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