Opening device and its usage method

Abstract

This application discloses a perforation device and its usage method, belonging to the field of oil and gas extraction technology. The perforation device includes a base, a drill disk, and a drive unit. The drill disk is rotatably mounted on the base around an X-axis. In the X-axis, the drill disk gradually tapers from the center to the edge. The drive unit is mounted on the base and has a drive shaft. The drive shaft is driven and connected to the drill disk. When the drive unit operates, the drive shaft rotates, driving the drill disk to rotate, making the drill disk suitable for opening diamond-shaped holes on the wall of the oil casing. During the lowering of the injection pipe, when the injection pipe approaches the diamond-shaped hole, it encounters resistance at the lower end of the diamond opening, thus simplifying the operation of the injection pipe entering the diamond-shaped hole.

Description

Technical Field

[0001] This application belongs to the field of oil and gas extraction technology, and in particular relates to a hole-opening device and its usage method. Background Technology

[0002] Injecting carbon dioxide into oil and gas wells for storage and oil displacement often utilizes perforations in the production casing to inject it into the reservoir. However, near-wellbore gas channeling and localized fracturing can lead to low CO2 displacement efficiency. This is especially true in older oil and gas wells that have been in production for some time, where interconnection between the injection and production wells can occur, further reducing CO2 displacement efficiency. Therefore, it is necessary to inject CO2 into other formations near the injection well. To improve CO2 displacement efficiency, long-distance directional drilling is required in formations near the wellbore. Current technology typically uses coiled tubing or drill pipe to hydraulically jettison steel hydraulic pipes for long-distance formation drilling. Existing drilling devices usually only allow for circular holes in the casing, making it difficult to pass the steel hydraulic jettison through these holes in practice. Therefore, this application proposes a drilling device and its method of use, suitable for drilling diamond-shaped holes in the casing, simplifying the operation of the steel hydraulic jettison through these holes. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application provides a hole-opening device and a method of using the same, to solve the problem that existing hole-opening devices can usually only open circular holes in the sleeve, which makes it difficult for steel hydraulic jet pipes to pass through the circular holes in the sleeve during actual operation.

[0004] In a first aspect, this application provides an opening device, comprising:

[0005] Base, suitable for lowering into the oil casing;

[0006] A drill bit, rotatably mounted on the base about an X-axis, wherein the drill bit tapers from the center to the edge in the X-direction; and...

[0007] A drive assembly includes a drive unit mounted on the base, the drive unit having a drive shaft that is drively connected to the drill disk, such that the drill disk is adapted to open diamond-shaped holes on the wall of the oil casing.

[0008] According to the hole-opening device of this application, by making the drive unit work, when the drive unit works, the drive shaft will rotate, and the drive shaft will drive the drill disk to rotate. Since the drill disk is rotatably mounted on the base about the X-axis, the drill disk is gradually narrowed from the middle to the edge in the X-direction. In this way, the drill disk is suitable for opening diamond-shaped holes on the wall of the oil casing. During the lowering of the injection pipe, when the injection pipe approaches the diamond-shaped hole, it encounters resistance at the lower end of the diamond-shaped opening, thereby making it easy for the injection pipe to enter the diamond-shaped hole.

[0009] According to one embodiment of this application, the base has an internal cavity, and the base is provided with a through hole communicating with the cavity. The through hole is provided along the Y direction to penetrate the first side wall of the cavity.

[0010] The drill disk is disposed within the receiving cavity;

[0011] The drive unit is movably mounted in the receiving cavity along the Z and Y directions, so that the drill disk connected to the drive shaft has a rotating state and a retracted state. In the rotating state, the drill disk extends out of the receiving cavity from the through hole, and in the retracted state, the drill disk retracts into the receiving cavity from the through hole.

[0012] According to one embodiment of this application, the second sidewall of the receiving cavity, which is opposite to and spaced apart from the first sidewall, is provided with a bearing boss. The bearing boss has a guide surface that moves upward along Z and is gradually closer to the first sidewall.

[0013] The drive unit is slidably mounted on the guide surface.

[0014] According to one embodiment of this application, the drive unit includes a pneumatic motor.

[0015] According to one embodiment of this application, the aperture device further includes at least one phase change section, the at least one phase change section being connected to the base, and each of the phase change sections includes:

[0016] The housing has an internal cavity for holding a phase change material. The housing also has an air outlet that communicates with the cavity and corresponds to the input port of the pneumatic motor.

[0017] A switch unit, disposed at the air outlet, is used to connect the air outlet and the air inlet after the phase change material undergoes phase change volume expansion; and...

[0018] Temperature rise components are installed inside the cavity to induce a phase change in the phase change material inside the cavity.

[0019] According to one embodiment of this application, the opening device further includes a first pressurizing device that pressurizes the at least one phase change section to cause the corresponding temperature rise component to operate.

[0020] Secondly, this application provides a method of using the opening device as described above, comprising the following steps:

[0021] Obtain location parameter information;

[0022] The base is lowered to the corresponding position of the oil casing according to the position parameter information;

[0023] The drive unit is controlled to operate so as to drive the drill bit to rotate, making the drill bit suitable for opening diamond-shaped holes on the wall of the oil casing.

[0024] According to the method of using the opening device provided in the embodiments of this application, by acquiring position parameter information and lowering the base to the corresponding position of the oil casing according to the position parameter information, the driving unit is controlled to work to drive the drill plate to rotate, so that the drill plate is suitable for opening a diamond-shaped hole on the wall of the oil casing, realizing automation and intelligence, and simple operation. In addition, when the injection pipe is lowered during the process of opening a diamond-shaped hole on the wall of the oil casing, when the injection pipe approaches the diamond-shaped hole, it encounters resistance at the lower end of the diamond-shaped opening, thereby making it easy for the injection pipe to enter the diamond-shaped hole.

[0025] According to one embodiment of this application, the driving unit includes a pneumatic motor, and an air passage is formed inside the base, the air passage being connected to the pneumatic motor. Prior to the step of lowering the base to the corresponding position of the oil casing according to the position parameter information, the following steps are included:

[0026] Connect the air inlet of the air passage to the air supply device.

[0027] According to one embodiment of this application, the step of controlling the drive unit to operate, thereby driving the drill disk to rotate, so that the drill disk is suitable for forming a diamond-shaped hole on the wall of the oil casing, includes:

[0028] Control the operation of the gas supply device.

[0029] According to one embodiment of this application, the base is placed inside the oil casing, and an annular space is formed between the base and the oil casing. The driving unit includes a pneumatic motor, and the opening device further includes at least one phase change unit and a first pressurizing device. The at least one phase change unit is connected to the base. Each phase change unit includes a housing, a switching unit, and a temperature rise component. A cavity is formed inside the housing for holding phase change material. An air outlet communicating with the cavity is also provided on the housing. The air outlet is connected to the pneumatic motor. Corresponding to the input port, the switch is located at the outlet port. The switch is used to connect the outlet port and the input port after the phase change material undergoes phase change and volume expansion. The temperature rise components are all installed inside the cavity to cause the phase change material inside the cavity to undergo phase change. The first pressurizing device pressurizes at least one phase change component to make the corresponding temperature rise component work. The step of controlling the drive unit to work to drive the drill disk to rotate, so that the drill disk is suitable for opening diamond-shaped holes on the wall of the oil casing, includes:

[0030] Fluid is supplied into the annular space via the first pressurizing device;

[0031] When the pressure on the at least one phase change section meets the corresponding preset conditions, the corresponding temperature rise component is controlled to work so that the phase change material inside the cavity undergoes a phase change.

[0032] When the pressure inside the cavity meets the second preset condition, the switch is controlled to operate, so as to connect the air outlet and the air inlet, and the drive unit is controlled to operate.

[0033] According to one embodiment of this application, the base has a receiving cavity inside, and the base is provided with a through hole communicating with the receiving cavity. The through hole is disposed along the Y direction, penetrating the first side wall of the receiving cavity. The drill bit is disposed in the receiving cavity, and the drive unit is movably installed in the receiving cavity along the Z and Y directions, so that the drill bit connected to the drive shaft has a rotating state and a retracted state. In the rotating state, the drill bit extends out of the receiving cavity from the through hole. In the retracted state, the drill bit retracts into the receiving cavity from the through hole. After the step of controlling the drive unit to work to drive the drill bit to rotate, so that the drill bit is suitable for opening a diamond-shaped hole on the wall of the oil casing, the method further includes:

[0034] Switch the drill bit from the drilling state to the storage state.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 This is one of the structural schematic diagrams of the opening device provided in the embodiments of this application;

[0038] Figure 2 This is a second schematic diagram of the structure of the opening device provided in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the structure of the drill disk installed inside the base receiving cavity according to an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the structure of the drill disc extending through the through hole provided in the embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the structure of the drill bit (at an angle) provided in the embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the drill bit (from another angle) provided in an embodiment of this application;

[0043] Figure 7 yes Figure 1 A schematic diagram of the structure in which the opening device is lowered into the oil casing;

[0044] Figure 8 yes Figure 2 A schematic diagram of the structure in which the opening device is lowered into the oil casing;

[0045] Figure 9 This is a schematic diagram of the structure of the diamond-shaped hole opened on the oil casing by the hole-opening device;

[0046] Figure 10 This is a flowchart illustrating the method of using the opening device provided in the embodiments of this application;

[0047] Figure 11 yes Figure 10 A flowchart illustrating the specific steps of step S400.

[0048] Figure label:

[0049] Opening device 100;

[0050] Base 110, bearing seat 101, connector 102, receiving cavity 111, first side wall 112, through hole 113, second side wall 114, bearing boss 115, guide surface 116, limiting boss 117;

[0051] Drill plate 120;

[0052] Pneumatic motor 131;

[0053] First pressurizing device 140, pressurizing pipe 141;

[0054] Transmission assembly 150;

[0055] Phase transition section 160;

[0056] Oil casing 200;

[0057] 300mm diamond-shaped hole;

[0058] Gas supply device 400. Detailed Implementation

[0059] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0060] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0061] The following is for reference. Figures 1 to 8 The present application describes an opening device for opening a diamond-shaped hole in an oil casing.

[0062] In this embodiment, refer to Figures 1 to 4 The drilling device 100 includes a base 110, a drill disk 120, and a drive assembly.

[0063] The base 110 can have various shapes, such as a cube, cuboid, cylinder, or tubular structure. This application does not impose any specific limitations on its shape. Furthermore, the base 110 can be made of various materials, such as plastic, stainless steel, aluminum, iron, copper, aluminum-magnesium alloy, or ceramic. This application does not impose any specific limitations on its material composition.

[0064] The drill disk 120 is rotatably mounted on the base 110 about the X-axis. In the X-direction, the drill disk 120 is tapered from the center to the edge (see reference). Figure 5 and Figure 6 This configuration allows for the creation of diamond-shaped holes 300 on the wall of the oil casing 200 during the rotation of the drill bit 120 (see reference). Figure 9 It has a simple structure.

[0065] The drill bit 120 is made of high-speed steel, cemented carbide, or ceramic. High-speed steel is a type of steel with a carbon content of less than 1% and contains other elements such as tungsten, molybdenum, cobalt, and chromium, giving it high hardness, high wear resistance, and high heat resistance. Cemented carbide, also known as tungsten steel, is a material sintered from tungsten, cobalt, and other metal powders, characterized by high hardness, high strength, and good heat resistance. The ceramic drill bit 120 is made of materials such as alumina, exhibiting high hardness, high wear resistance, and high temperature resistance.

[0066] It should be noted that in the embodiments of this application, the long diagonal of the rhomboid hole 300 drilled on the casing is L1, where 8cm≤L1≤16cm, preferably L1=12cm, and the short diagonal is L2, where 3cm≤L2≤6cm. Furthermore, the long diagonal of the rhomboid hole 300 is parallel to the axis of the oil casing 200. This hole shape is more conducive to accurately locating the hole in the steel hydraulic pipe, reducing operation time and improving operation efficiency. Of course, in other embodiments, the long diagonal of the rhomboid hole 300 can also be perpendicular to the axis of the oil casing 200; this application does not limit this.

[0067] The drive assembly includes a drive unit mounted on the base 110. The drive unit has a drive shaft that is connected to the drill disk 120. When the drive unit works, the drive shaft will rotate, which will drive the drill disk 120 to rotate. When the drill disk 120 rotates, a diamond-shaped hole 300 can be opened on the wall of the oil casing 200. The structure is simple and easy to operate.

[0068] It should be noted that there are various types of drive units. For example, a drive unit may include a drive motor or an electric motor, etc. Specifically, this application does not limit this.

[0069] According to the opening device 100 of this application, when the drive unit is working, the drive shaft will rotate, and the drive shaft will drive the drill disk 120 to rotate. Since the drill disk 120 is rotatably mounted on the base 110 around the X-axis, the drill disk 120 is gradually tapered from the middle to the edge in the X-direction. In this way, the drill disk 120 is suitable for opening diamond-shaped holes 300 on the wall of the oil casing 200. During the lowering of the injection pipe, when the injection pipe approaches the diamond-shaped hole 300, it encounters resistance at the lower end of the diamond-shaped opening, which makes it easy for the injection pipe to enter the diamond-shaped hole 300.

[0070] In one embodiment, reference is made to Figure 3 and Figure 4 The base 110 has a cavity 111 inside, and the base 110 is provided with a through hole 113 that communicates with the cavity 111. The through hole 113 is provided along the Y direction and penetrates the first side wall of the cavity 111.

[0071] The shape of the receiving cavity 111 can be various, such as cylindrical, cuboid, cube, or spherical, etc., and this application does not limit it. Similarly, the shape of the through hole 113 can be various, such as circular, square, triangular, or rhomboid, etc., and this application does not limit it.

[0072] The drill bit 120 is disposed in the receiving cavity 111, and the drive unit is movably installed in the receiving cavity 111 along the Z and Y directions, so that the drill bit 120 connected to the drive shaft has a drilling state and a retracted state. In the drilling state, the drill bit 120 extends out of the receiving cavity 111 from the through hole 113 to open a diamond-shaped hole 300 on the wall of the oil casing 200. In the retracted state, the drill bit 120 retracts into the receiving cavity 111 from the through hole 113 to prevent the drill bit 120 from being exposed and damaged. The structure is simple and easy to operate.

[0073] The movement of the drive unit can be driven by a sliding drive assembly to achieve automated sliding of the drive unit. This design is simple in structure and intelligently easy to operate. Specifically, there are various types of sliding drive assemblies that drive the drive unit to move along the Z and Y directions. For example, in one embodiment, the sliding drive assembly may include a second pressurizing device with an exhaust port facing the side of the drive unit away from the drill disk 120. By blowing high-pressure gas onto the drive unit, the drive unit is driven to move along the Z and Y directions, thus simplifying the structure. In other embodiments, the sliding drive assembly may include a cylinder. The cylinder body is installed within the receiving cavity 111, and the cylinder piston rod has a stroke along the Z direction. The free end of the cylinder piston rod is slidably connected to the side of the drive unit away from the drill disk 120. With this configuration, when the cylinder piston rod extends, it drives the drive unit to move along the Z and Y directions, resulting in a simple structure and easy operation. The sliding drive unit may also include a linear motor, an electric actuator, etc., which are not limited in this application.

[0074] In addition, after the drill bit 120 completes drilling, it needs to be reset. To save costs, in the embodiments of this application, an elastic reset member is provided between the drive unit and the inner wall of the receiving cavity 111. The elastic force of the elastic reset member causes the drive unit to automatically reset. Specifically, the elastic reset member may include a spring. Alternatively, the drive unit can also be automatically reset using the aforementioned sliding drive unit, and the corresponding principle is already well-established; therefore, this application does not limit its use.

[0075] Reference Figure 1 In one embodiment, a second side wall 114, which is opposite to and spaced apart from the first side wall 112, is provided with a bearing boss 115. The bearing boss 115 has a guide surface 116. Along the Z-direction, the guide surface 116 is inclined towards the first side wall 112. The drive unit is slidably mounted on the guide surface 116. This configuration enables the drive unit to have a travel in both the Y and Z directions, and the structure is simple.

[0076] Furthermore, a head limiting boss 117 is also provided at one end of the guide surface 116 adjacent to the through hole 113 along the Y direction. The limiting boss 117 is used to limit the movement stroke of the drive unit toward the through hole 113, so as to prevent the drive unit from moving too far along the Z direction toward the through hole 113, causing the drive unit to detach from the guide surface 116.

[0077] In one embodiment, the drive shaft extends along the Z direction, and the drilling device 100 further includes a transmission assembly 150, which drives the drive shaft and the drill disk 120 to convert the rotation of the drive shaft about the Z-axis into the rotation of the drill disk 120 about the X-axis. This arrangement allows the drill disk 120 to rotate smoothly.

[0078] It should be noted that there are various types of transmission components 150. For example, transmission components 150 may include bevel gear sets or worm gears, etc. Specifically, this application does not limit this.

[0079] Drilling the wall of the oil casing 200 typically requires lowering the drive unit to the drilling position within the casing 200. This drives the drill bit 120 to rotate. In one embodiment, the drive unit includes a pneumatic motor 131. This configuration is simple in structure. Gas is supplied to the pneumatic motor 131 to drive it, resulting in a simple structure, convenient operation, easy maintenance, and low cost. Furthermore, the pneumatic motor 131 can operate at full load for extended periods with minimal temperature rise. It is also safe to operate, has explosion-proof properties, and is unaffected by high temperatures and vibrations. It also has high starting torque, can start under load, and has a wide power and speed range.

[0080] In one embodiment, the opening device 100 further includes at least one phase change part 160, which is connected to the base 110. Each phase change part 160 includes a housing, a switching part, and a temperature rise component.

[0081] The shell has an internal cavity for holding phase change material. The shell also has an air outlet that communicates with the cavity and corresponds to the input port of the pneumatic motor 131.

[0082] It should be noted that the cavity used to hold the phase change material may include liquid carbon dioxide and / or solid carbon dioxide. Furthermore, the shell can have various shapes; for example, it can be a cube, cuboid, or cylinder. Specifically, this application does not limit this. Additionally, the shell can be made of various materials; for example, it may include plastic, stainless steel, aluminum, iron, copper, aluminum-magnesium alloy, or ceramic, etc., and this application does not limit this.

[0083] The switch is located at the air outlet. The switch is used to open the air outlet and the inlet after the phase change material undergoes a phase change and volume expansion, so that the gas after the phase change can drive the pneumatic motor to work.

[0084] In one embodiment, the switching unit may include a rupture disc. When the switching unit includes a rupture disc, the rupture disc is located at the gas outlet. When the phase change material inside the cavity undergoes a phase change and expands in volume, causing excessive pressure inside the cavity, the rupture disc will activate (rupture or detach) when the pressure difference across the rupture disc reaches a predetermined value. This allows the gas inside the cavity to be transported from the gas outlet to the input port of the pneumatic motor 131, resulting in a simple structure. Furthermore, the rupture disc has advantages such as sensitivity, accuracy, leak-free operation, and strong venting capacity, and can reliably operate in viscous, high-temperature, low-temperature, and corrosive environments.

[0085] Of course, in other embodiments, the switching unit may also include a pressure valve and a solenoid valve. Since pressure valves and solenoid valves are all prior art and the related technologies are mature, this application will not elaborate on them.

[0086] The temperature riser components are all installed inside the cavity. The temperature riser components raise the temperature inside the cavity, thereby causing the phase change material inside the cavity to undergo a phase change.

[0087] In one embodiment, the temperature rise component includes a metal shell disposed within a cavity. An activator is stored inside the metal shell. By igniting the activator, the temperature inside the cavity is raised. In addition, by using a metal shell to hold the activator, it is easy to clean up the ash after the activator is burned, and the metal has good thermal conductivity.

[0088] It should be noted that the metal casing can be made of materials such as aluminum, iron, copper, and aluminum-magnesium alloys, and this application does not limit this. Furthermore, the metal casing can include an upper shell and a lower shell, which are interlocked to form a cavity for holding the phase change material. In one embodiment, the upper shell and lower shell can be welded together integrally; in other embodiments, the upper shell and lower shell can also be connected and fixed by a snap-fit ​​structure, a threaded structure, or a screw connection.

[0089] Reference Figure 2 and Figure 8The opening device 100 also includes a first pressurizing device 140, which pressurizes at least one phase change part 160 to make the corresponding temperature rise component work. When the temperature rise component works, it will cause the phase change material inside the cavity to undergo a phase change. After the phase change material undergoes a phase change and expands in volume, the outlet and inlet are connected, so that the gas after the phase change and expansion of the phase change material can drive the drive shaft of the pneumatic motor 131 to rotate, so that the drill disk 120 connected to the drive shaft can rotate.

[0090] Specifically, refer to Figure 8 The base 110 is lowered into the oil casing, forming an annular space between the base 110 and the oil casing 200. The first pressurizing device 140 includes a pressurizing pipe 141, which is connected to the annular space. Fluid is supplied to the annular space through the pressurizing pipe 141. The structure is simple and easy to operate. In addition, continuous fluid supply will cause the pressure on at least one phase change part 160 to meet the preset conditions. When the pressure on at least one phase change part 160 meets the preset conditions, the temperature rise component will operate to induce a phase change in the phase change material inside the cavity.

[0091] It should be noted that there are various types of first pressurizing devices 140. In the embodiments of this application, the first pressurizing device 140 includes a hydraulic pressurizing device. Of course, in other embodiments, the first pressurizing device 140 may also include a gas pressurizing device. This application does not limit this.

[0092] It should be noted that the phase change unit 160 is equipped with a pressure sensor and a pressure control system. When pressure is applied to the phase change unit 160 through the pressure pipe 141, according to the piezoelectric effect principle, when the pressure sensor senses that the pressure on the phase change unit 160 meets the preset conditions, the pressure control system opens and outputs a microcurrent to the heating component, activating the activator inside the heating component. The heating component heats up, causing the phase change material inside the cavity to expand in volume. When the pressure inside the cavity reaches a certain threshold, the phase change material that has undergone phase change and expanded in volume will be discharged from the air outlet and enter the input port of the pneumatic motor 131, thereby driving the drive shaft of the pneumatic motor 131 to rotate, which in turn drives the drill disk 120 connected to the drive shaft to rotate.

[0093] Of course, in other embodiments, the temperature rise component can also be activated by connecting the cable and the phase change unit 160. When the cable is powered on, a current will be generated inside the cable. The current can act on the temperature rise component. When the temperature rise component is powered on, the metal shell of the temperature rise component will heat up. The heat generated by the metal shell will trigger the activator to burn, generating more heat, which will raise the temperature inside the cavity and trigger the phase change material to undergo a phase change.

[0094] There are various ways to connect the base 110 and the phase change part 160. For example, in one embodiment, the base 110 and the phase change part 160 can be fixed by welding. In another embodiment, the base 110 and the phase change part 160 can also be fixed by a snap-fit ​​structure. In the embodiments of this application, the base 110 and the phase change part 160 can also be fixed by a threaded connection, which facilitates positioning, improves the accuracy and efficiency of hole positioning, and also makes hole drilling more efficient.

[0095] Additionally, refer to Figure 2 and Figure 8 In the embodiments of this application, the base 110 includes a support 101 and a connector 102. The support 101 has a receiving cavity 111 inside. The phase change part 160 is installed on the upper end of the support 101, and the connector 102 is connected to the upper end of the phase change part 160. Thus, the support 101 can be lowered into the oil casing 200 through the connector 102, which is simple to operate.

[0096] In one embodiment, the phase change part 160 and the support base 101 can be connected by a threaded structure. In another embodiment, the phase change part 160 and the support base 101 can also be fixed by a snap-fit ​​structure.

[0097] In one embodiment, the phase change part 160 and the connector 102 can be connected by a threaded structure. In another embodiment, the phase change part 160 and the connector 102 can also be fixed by a snap-fit ​​structure.

[0098] It should be noted that the technologies of threaded connection and snap-fit ​​fixing are already mature, and will not be described in detail here. In addition, there are various types of connectors 102. For example, in one embodiment, connector 102 can be a cable, and in another embodiment, connector 102 can also be a continuous oil pipe, etc. Specifically, the configuration of connector 102 can be set as needed, and this application does not limit it.

[0099] The activator mentioned in the above embodiments is a chemical reagent that has undergone special treatment. Upon being electrified, it reacts immediately, burning rapidly and intensely to generate a large amount of heat. There are various types of activators; for example, activators may include nitrocellulose, red phosphorus, magnesium powder, etc., and this application does not limit this to any particular type.

[0100] In yet another embodiment, reference is made to... Figure 1 and Figure 7An air passage is formed inside the base 110. The inlet of the air passage is connected to the air supply device 400, and the outlet of the air passage is connected to the air inlet of the pneumatic motor 131. Thus, when the air inlet of the air passage is connected to the air supply device 400 and the air supply device 400 is controlled to work, the air supply device 400 will deliver gas into the air passage. The gas enters the pneumatic motor 131 from the air inlet, thereby driving the pneumatic motor 131 to rotate, thereby driving the drill disk 120 to rotate, so as to open the diamond-shaped hole 300 on the wall of the oil casing 200.

[0101] Reference Figure 10 The application embodiment also provides a method of using the opening device 100, including the following steps:

[0102] Step S100: Obtain location parameter information.

[0103] It should be noted that, in this step, the location parameter information includes the location information of the hole to be drilled in the oil casing 200, specifically the depth parameter of the drilling location from the ground. Of course, in other embodiments, the location parameters can be set in detail as needed, and this application does not limit this.

[0104] Step S300: According to the position parameter information, lower the base 110 to the corresponding position of the oil casing 200.

[0105] In this step, the base 110 is lowered to the corresponding position of the oil casing 200 according to the position parameter information, which ensures the accuracy of the drilling position.

[0106] Step S400: Control the drive unit to work and drive the drill disk 120 to rotate, so that the drill disk 120 is suitable for opening diamond-shaped holes 300 on the wall of the oil casing 200.

[0107] According to the method of using the opening device 100 provided in the embodiments of this application, by acquiring position parameter information and lowering the base 110 to the corresponding position of the oil casing 200 according to the position parameter information, the drive unit is controlled to work to drive the drill plate 120 to rotate, so that the drill plate 120 is suitable for opening a diamond-shaped hole 300 on the wall surface of the oil casing 200, realizing automation and intelligence, and simple operation. In addition, when the diamond-shaped hole 300 is opened on the wall surface of the oil casing 200, during the process of lowering the injection pipe, when the injection pipe approaches the diamond-shaped hole 300, it encounters resistance at the lower end of the diamond-shaped opening, thereby making it easy for the injection pipe to enter the diamond-shaped hole 300.

[0108] In one embodiment, the drive unit includes a pneumatic motor 131, and an air passage is formed inside the base 110, which is connected to the pneumatic motor 131. Before step S300, which involves lowering the base 110 to the corresponding position on the oil casing 200 according to the position parameter information, the following steps are included:

[0109] Step S200: Connect the air inlet of the air passage to the air supply device 400.

[0110] In this step, by connecting the air inlet of the air passage to the air supply device 400, when the air supply device 400 is controlled to work, the air supply device 400 will deliver gas into the air passage. The gas drives the pneumatic motor 131 to work, thereby driving the drill plate 120 to rotate, so as to open the diamond hole 300 on the wall of the oil casing 200. The structure is simple and easy to operate, which improves the efficiency of opening the diamond hole 300 and the accuracy of the opening position.

[0111] Step S400, controlling the drive unit to operate, thereby driving the drill disk 120 to rotate, so that the drill disk 120 is suitable for opening a diamond-shaped hole 300 on the wall surface of the oil casing 200, includes:

[0112] Step S410a: Control the operation of the gas supply device 400.

[0113] In this step, by controlling the operation of the gas supply device 400, the gas supply device 400 can deliver gas into the gas passage. The gas drives the pneumatic motor 131 to work, thereby driving the drill plate 120 to rotate, so as to open the diamond-shaped hole 300 on the wall of the oil casing 200.

[0114] In another embodiment, the base 110 is lowered into the oil casing 200, forming an annular space between the base 110 and the oil casing 200. The drive unit includes a pneumatic motor 131, and the opening device 100 further includes at least one phase change unit 160 and a first pressurizing device. At least one phase change unit 160 is connected to the base 110. Each phase change unit 160 includes a housing, a switching unit, and a temperature rise component. A cavity is formed inside the housing for holding the phase change material. The housing is also provided with an air outlet communicating with the cavity, which corresponds to the input port of the pneumatic motor 131. The switching unit is located at the air outlet and is used to connect the air outlet and the input port after the phase change material undergoes a phase change and expands. The temperature rise components are all installed inside the cavity to cause the phase change material inside the cavity to undergo a phase change. The first pressurizing device pressurizes at least one phase change unit 160 to make the corresponding temperature rise component work. (Refer to...) Figure 11 Step S400, controlling the drive unit to operate, thereby driving the drill disk 120 to rotate, so that the drill disk 120 is suitable for opening a diamond-shaped hole 300 on the wall surface of the oil casing 200, includes:

[0115] Step S410b: Fluid is delivered into the annular space through the first pressurizing device.

[0116] It should be noted that, in one embodiment, the fluid supplied to the annular space via the first pressurizing device can be a gas, and in another embodiment, the fluid supplied to the annular space via the first pressurizing device can be a liquid. Specifically, the type of fluid supplied to the annular space via the first pressurizing device can be selected as needed, and this application does not limit it in this regard.

[0117] Step S420b: When the pressure on at least one phase change part 160 meets the corresponding preset conditions, the corresponding temperature rise component is controlled to work so that the phase change material inside the cavity undergoes a phase change.

[0118] In this step, when one phase change unit 160 is provided, it is only necessary to ensure that the pressure of the fluid delivered to the annular space through the first pressurizing device on the phase change unit 160 meets the preset conditions, and control the corresponding temperature rise component to work so that the phase change material inside the cavity undergoes a phase change. When multiple phase change units 160 are provided, they are stacked sequentially from top to bottom. First, the pressure of the fluid supplied to the annular space by the first pressurizing device 140 acting on the lower phase change unit 160 meets the corresponding preset conditions. The temperature rise component corresponding to the lower phase change unit 160 is controlled to work, so that the phase change material inside the lower cavity undergoes a phase change. Then, the pressure of the fluid supplied to the annular space by the first pressurizing device 140 acting on the upper phase change unit 160 meets the corresponding preset conditions. The temperature rise component corresponding to the upper phase change unit 160 is controlled to work, so that the phase change material inside the upper cavity undergoes a phase change. This process is repeated, so that multiple phase change units 160 undergo phase changes sequentially from bottom to top, which can realize the opening of multiple diamond-shaped holes 300 on the oil casing 200.

[0119] It should be noted that the temperature rise control component works by raising the temperature of the component, causing the phase change material inside the cavity to undergo a phase change. This setup allows for remote operation.

[0120] Step S430b: When the pressure inside the cavity meets the second preset condition, the control switch works to open the air outlet and the air inlet, and the control drive works.

[0121] In this step, when the pressure inside the cavity of the corresponding phase change section 160 meets the second preset condition, the control switch works to open the air outlet and the air inlet, and the drive works to drive the drill plate 120 to rotate, opening a diamond-shaped hole 300 on the wall of the oil casing 200. The operation is simple and realizes mechanization and intelligence.

[0122] In one embodiment, a receiving cavity 111 is formed inside the base 110. The base 110 is provided with a through hole 113 communicating with the receiving cavity 111. The through hole 113 is provided along the Y direction to penetrate the first side wall 112 of the receiving cavity 111. The drill disk 120 is disposed in the receiving cavity 111. The drive unit is movably installed in the receiving cavity 111 along the Z and Y directions, so that the drill disk 120 connected to the drive shaft has a rotating state and a retracted state. In the rotating state, the drill disk 120 extends out of the receiving cavity 111 from the through hole 113. In the retracted state, the drill disk 120 retracts into the receiving cavity 111 from the through hole 113. After step S400, which controls the drive unit to work to drive the drill disk 120 to rotate, so that the drill disk 120 is suitable for opening a diamond-shaped hole 300 on the wall of the oil casing 200, the following steps are also included:

[0123] Step S500: Switch the drill plate 120 from the drilling state to the storage state.

[0124] In this step, the drill plate 120 can be stored in the receiving cavity when drilling is not required, thus protecting the drill plate 120.

[0125] In the specific operation of drilling the oil casing 200, drilling is carried out at different depths. When drilling at a deeper depth is required, the air outlet of at least one phase change part 160 can be aligned with the input port of the pneumatic motor 131 in advance. Then, the base 110 is lowered to the drilling position of the oil casing 200. The temperature rise component can be remotely controlled to make the phase change material inside the phase change part 160 expand and increase its volume. The expanded phase change material can be discharged from the air outlet and enter the input port to drive the pneumatic motor 131 to work, so that the drill disk 120 connected to the drive motor can rotate to drill a diamond-shaped hole 300 in the oil casing 200. After drilling is completed, the base 110 can be lifted to the ground. Thus, the operation is simple.

[0126] It should be noted that the deeper the well, the greater the pressure inside, and the greater the external resistance experienced by the drill bit 120 during drilling, potentially to the point of being unable to rotate. In this case, a longer phase change section 160 can be provided, allowing it to store more phase change material. After phase change, this material can provide higher pressure for phase change impact, thereby overcoming the resistance to rotation of the drill bit 120 at deeper depths. Furthermore, when drilling multiple rhomboid holes 300, multiple phase change sections 160 can be provided, connected in series. By causing the multiple phase change sections 160 to undergo phase change sequentially from bottom to top, a pneumatic motor is driven to rotate, thus creating multiple rhomboid holes 30 on the wall of the oil casing 200. Of course, in other embodiments, multiple phase change sections 160 can also undergo phase change simultaneously; this application does not limit this.

[0127] In the specific operation of drilling the oil casing 200, drilling may be performed at different depths. When drilling is required at a shallower depth, in one embodiment, the base can be lowered to the position of the oil casing to be drilled, and carbon dioxide gas or other gases can be delivered through the gas passage formed by the base 100 to drive the pneumatic motor 131 to work, so that the drill disc 120 connected to the gas motor 131 rotates to drill a diamond-shaped hole 300 in the oil casing 200. After drilling is completed, the base 110 can be lifted to the ground. Thus, the operation is simple.

[0128] In the above embodiments, after the diamond-shaped hole 300 on the oil casing 200 is drilled, a steel rigid pipe can be conveyed into the oil casing 200, and then the steel rigid pipe passes through the diamond-shaped hole 300. Water jetting is then used to form a channel of the required length, thereby forming a formation channel system and enabling directional injection of carbon dioxide. In the embodiments of this application, the length of the channel is L, where 30m ≤ L ≤ 50m. Of course, in other embodiments, the length of the formed channel can be selected as needed, and this application does not limit this.

[0129] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0130] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0131] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0132] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0133] In the description of this application, "multiple" means two or more.

[0134] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0135] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An opening device, characterized in that, include: Base, suitable for lowering into the oil casing; A drill bit, rotatably mounted on the base about an X-axis, wherein the drill bit tapers from the center to the edge in the X-direction; and... A drive assembly includes a drive unit mounted on the base, the drive unit having a drive shaft drivenly connected to the drill bit, such that the drill bit is adapted to create diamond-shaped holes in the wall of the oil casing; wherein, The base has an internal cavity, and the base is provided with a through hole that communicates with the cavity. The through hole is provided along the Y direction and penetrates the first side wall of the cavity. The drill disk is disposed within the receiving cavity; The drive unit is movably mounted in the receiving cavity along the Z and Y directions, so that the drill disk connected to the drive shaft has a rotating state and a retracted state. In the rotating state, the drill disk extends out of the receiving cavity from the through hole, and in the retracted state, the drill disk retracts into the receiving cavity from the through hole. The second side wall, which is opposite to and spaced from the first side wall, is provided with a bearing boss. The bearing boss has a guide surface that moves upward along Z and gradually approaches the first side wall. The drive unit is slidably mounted on the guide surface.

2. The opening device according to claim 1, characterized in that, The drive unit includes a pneumatic motor.

3. The opening device according to claim 2, characterized in that, The opening device further includes at least one phase change section, which is connected to the base, and the phase change section includes: The housing has an internal cavity for holding a phase change material. The housing also has an air outlet that communicates with the cavity and corresponds to the input port of the pneumatic motor. A switch unit, disposed at the air outlet, is used to connect the air outlet and the air inlet after the phase change material undergoes phase change volume expansion; and... Temperature rise components are installed inside the cavity to induce a phase change in the phase change material inside the cavity.

4. The opening device according to claim 3, characterized in that, The opening device further includes a first pressurizing device, which pressurizes the at least one phase change section to make the corresponding temperature rise component work.

5. A method of using an opening device, based on the opening device as described in any one of claims 1 to 4, characterized in that, The method of using the opening device includes the following steps: Obtain location parameter information; The base is lowered to the corresponding position of the oil casing according to the position parameter information; The drive unit is controlled to operate so as to drive the drill bit to rotate, making the drill bit suitable for opening diamond-shaped holes on the wall of the oil casing.

6. The method of using the opening device according to claim 5, characterized in that, The drive unit includes a pneumatic motor, and an air passage is formed inside the base, which is connected to the pneumatic motor. Prior to the step of lowering the base to the corresponding position of the oil casing according to the position parameter information, the following steps are included: Connect the air inlet of the air passage to the air supply device.

7. The method of using the opening device according to claim 6, characterized in that, The step of controlling the drive unit to operate, thereby driving the drill disk to rotate, so that the drill disk is suitable for forming a diamond-shaped hole on the wall of the oil casing, includes: Control the operation of the gas supply device.

8. The method of using the opening device according to claim 6, characterized in that, The base is placed inside the oil casing, forming an annular space between the base and the oil casing. The drive unit includes a pneumatic motor, and the drilling device further includes at least one phase change unit and a first pressurizing device. The at least one phase change unit is connected to the base. The phase change unit includes a housing, a switching unit, and a temperature rise component. A cavity is formed inside the housing for holding the phase change material. An air outlet communicating with the cavity is also provided on the housing, corresponding to the input port of the pneumatic motor. The switching unit is located at the air outlet and is used to connect the air outlet and the input port after the phase change material undergoes a phase change and volume expansion. The temperature rise components are all installed inside the cavity to cause the phase change material inside the cavity to undergo a phase change. The first pressurizing device pressurizes the at least one phase change unit to make the corresponding temperature rise component work. The step of controlling the drive unit to work and drive the drill disk to rotate, so that the drill disk is suitable for drilling diamond-shaped holes on the wall of the oil casing, includes: Fluid is supplied into the annular space via the first pressurizing device; When the pressure on the at least one phase change section meets the corresponding preset conditions, the corresponding temperature rise component is controlled to work so that the phase change material inside the cavity undergoes a phase change. When the pressure inside the cavity meets the second preset condition, the switch is controlled to operate, so as to connect the air outlet and the air inlet, and the drive unit is controlled to operate.

9. The method of using the opening device according to claim 5, characterized in that, The base has an internal cavity, and the base is provided with a through hole communicating with the cavity. The through hole is arranged along the Y direction, penetrating the first side wall of the cavity. The drill bit is disposed in the cavity, and the drive unit is movably installed in the cavity along the Z and Y directions, so that the drill bit connected to the drive shaft has a rotating state and a retracted state. In the rotating state, the drill bit extends out of the cavity from the through hole; in the retracted state, the drill bit retracts into the cavity from the through hole. After the step of controlling the drive unit to operate and drive the drill bit to rotate, so that the drill bit is suitable for opening a diamond-shaped hole on the wall of the oil casing, the method further includes: Switch the drill bit from the drilling state to the storage state.

Images