Novel electric window opening tool and window opening method

Abstract

The invention discloses a novel electric windowing tool and a windowing method.The novel electric windowing tool comprises a tool body, a cable connector is arranged at one end of the tool body and connected with a cable, an anchoring part is arranged on the outer cylindrical surface of any end of the tool body and enables the tool body to be fixed to the inner wall of a well, and the tool body is of a hollow structure; an annular track and an electric control part are arranged in the hollow structure, the central axis of the annular track is perpendicular to the central axis of the tool body, the position, opposite to the annular track, of the cylindrical face of the tool body is of a plane structure, a cutting knife is slidably arranged on the annular track, an electromagnet is arranged in the center of the annular track, and electric lifting devices are arranged on one side of the annular track and one side of the electromagnet correspondingly. When the electric lifting devices are lifted, the cutting knife makes contact with the plane structure, the electromagnet attracts the plane structure, and the anchoring component, the cutting knife, the electromagnet and the electric lifting devices are connected with the electric control part. According to the method, the windowing operation efficiency is high, the underground windowing quality visualization is realized, and the method has a wide application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling tools, and in particular relates to a novel electric window opening tool and a window opening method. Background Art

[0002] At present, Bohai Oilfield has entered a large-scale adjustment and development stage. The contradiction between the implementation of adjustment wells and the tight platform slot and the risk of drilling collision prevention is becoming increasingly prominent. At present, casing window technology can solve the above problems. At the same time, it has the advantages of further tapping the production capacity of oilfields, solving the difficulty of heavy oil and marginal oilfields, and improving the recovery rate.

[0003] The window opening tool is an indispensable tool in the window opening technology. The traditional casing window opening tool adopts a one-trip pipe string. First, the anchor anchors the casing and fixes the window opening pipe string. The subsequent window opening milling cone relies on the top drive to provide power and realizes the casing tool window opening along the window opening whipstock. The above traditional window opening scheme has a long operation time and high operation risk, and can no longer meet the actual production needs. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a new type of electric window opening tool and window opening method. The tool is quickly lowered into a designated position through a cable, the pipe column is anchored by electric power, the casing is opened by electric cutting, and the casing cut part is recovered by a magnet. It has a high degree of automation, can greatly improve the window opening efficiency, realize the visualization of downhole window opening, and improve the window opening quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a new type of electric window opening tool, including a tool body, the tool body is a cylinder, a cable connector is provided at one end of the tool body, the cable connector is connected to the cable, an anchoring component is provided on the outer cylindrical surface of either end of the tool body, the anchoring component fixes the tool body on the inner wall of the well, the tool body is a hollow structure, a circular track and an electric control part are provided in the hollow structure, the central axis of the circular track is perpendicular to the central axis of the tool body, the cylindrical surface of the tool body and the circular track are opposite to the plane structure, a cutting knife is slidably provided on the circular track, an electromagnet is provided at the center of the circular track, an electric lifting device is provided on one side of the circular track and one side of the electromagnet, when the electric lifting device is raised respectively, the cutting knife contacts the plane structure, the electromagnet attracts the plane structure, the anchoring component, the cutting knife, the electromagnet and the electric lifting device are respectively connected to the electric control part.

[0006] Furthermore, the anchoring component includes a plurality of anchor shoes distributed in a ring shape. When in use, the electric control unit drives the anchor shoes to open, thereby fixing the tool body.

[0007] Furthermore, the anchoring components are in two groups, and the two groups of anchoring components are respectively placed at two ends of the tool body.

[0008] Furthermore, the annular track is an elliptical annular cylinder, and the inner and outer cylindrical surfaces of the annular track are both provided with annular grooves, the cross-section of the annular groove is an arc shape, the cutting knife is connected to a sliding module, and the sliding module is embedded in the annular groove, so that the cutting knife moves along the annular track.

[0009] Furthermore, the sliding modules include two, and the two sliding modules are symmetrically embedded in the annular groove of the inner cylindrical surface and the annular groove of the outer cylindrical surface respectively.

[0010] Furthermore, the side of the cutting knife is connected to the sliding module, the bottom of the cutting knife is connected to the motor through a reducer, the end of the annular track installed and connected to the electric lifting device is provided with a connecting column, the side of the connecting column is connected to the motor through an axial moving module, and the bottom of the connecting column is connected to the electric lifting device.

[0011] Furthermore, the cutting knives include multiple groups, and the multiple groups of cutting knives are evenly distributed on the annular track.

[0012] Furthermore, it also includes a hydraulic lifting device, which is placed in the hollow structure and connected to the electric control unit, and the electric control unit drives the hydraulic lifting device to rise or fall.

[0013] Furthermore, the electromagnet is a rectangular parallelepiped, a through hole is provided at the center of the electromagnet, the through hole is coaxial with the annular track, and the hydraulic lifting device is lifted by the through hole and contacts the planar structure.

[0014] Furthermore, the present invention also provides a novel electric window opening method, using the above novel electric window opening tool, comprising the following steps:

[0015] S1: Connect the cable connector to the cable, and lower the tool body into the designated position through the cable;

[0016] S2: After power is turned on, the electric control unit drives the anchor shoe to open, so that the tool body is fixed;

[0017] S3: the electric control unit drives the cutting knife to rotate, and at the same time, the electric control unit drives the first electric lifting device connected to the circular track to rise, and the circular track drives the cutting knife to cut the plane structure;

[0018] S4: After the cutting is completed, the electric control unit drives the first electric lifting device connected to the circular track to descend, the cutting knife is retracted, and at the same time, the hydraulic lifting device is driven to rise to ensure that the window contour line is cut completely;

[0019] S5: The electric control unit drives the second electric lifting device connected to the electromagnet to rise, and the electromagnet absorbs the cut side wall of the casing.

[0020] The advantages and positive effects of the present invention are:

[0021] The invention has a simple structure and is easy to operate. The tool body is quickly lowered into a designated position through a cable, the pipe column is anchored through an electric control unit, the casing window is opened through an electric cutter, and the casing cut part is recovered through an electromagnet. The invention has a high degree of automation, can greatly improve the window opening efficiency, realize the visualization of the downhole window opening, improve the window opening quality, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the anchoring component of an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the structure of a cutting knife according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the electromagnet structure of an embodiment of the present invention.

[0026] Figure 5 It is a work flow chart of another embodiment of the present invention.

[0027] In the figure:

[0028] 1. Anchoring components; 1-1. Anchor tiles;

[0029] 2. Tool body; 2-1. Plane structure;

[0030] 3. Electromagnet; 3-1. Through hole; 3-2. Second electric lifting device;

[0031] 4. Annular track; 4-1. Annular groove; 4-2. Connecting column; 4-3. First electric lifting device;

[0032] 5. Hydraulic lifting device;

[0033] 6. Cutting knife; 6-1. Sliding module; 6-2. Motor; 6-3. Axial moving module; 6-4. Reducer;

[0034] 7. Electronic control unit;

[0035] 8. Cable connector. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0040] like Figure 1As shown, a new type of electric window opening tool includes a tool body 2, which is a cylinder. A cable connector 8 is provided at one end of the tool body 2, and the cable connector 8 is connected to the cable. An anchoring component 1 is provided on the outer cylindrical surface of either end of the tool body 2, and the anchoring component 1 fixes the tool body 2 on the inner wall of the well. Specifically, the anchoring component 1 provided in this embodiment is in two groups, and the two groups of anchoring components 1 are respectively placed at the two ends of the tool body 2. The tool body 2 is a hollow structure, and a circular track 4 and an electric control part 7 are provided in the hollow structure. Preferably, one group of anchoring components 1 is placed on the outer cylindrical surface where the electric control part 7 is located. The central axis of the circular track 4 is perpendicular to the central axis of the tool body 2, and the cylindrical surface of the tool body 2 is opposite to the circular track 4. There is a plane structure 2-1. Preferably, the plane structure 2-1 is coaxial with the circular track 4, and the area of ​​the plane structure 2-1 is larger than the area of ​​the circular track 4. A cutting knife 6 is slidably arranged on the circular track 4, an electromagnet 3 is arranged at the center of the circular track 4, and electric lifting devices are arranged on one side of the circular track 4 and one side of the electromagnet 3. When the electric lifting devices are respectively raised, the cutting knife 6 contacts the plane structure 2-1, and the electromagnet 3 attracts the plane structure 2-1. The anchoring component 1, the cutting knife 6, the electromagnet 3 and the electric lifting device are respectively connected to the electric control unit 7.

[0041] The anchoring component 1 is a device for fixing the tool body 2 on the well wall. The anchoring component 1 can be of various structures as long as it can achieve the above functions. Figure 2 As shown, the anchoring component 1 provided in this embodiment includes a plurality of anchoring shoes 1 - 1 distributed in a ring shape. When in use, the electric control unit 7 drives the anchoring shoes 1 - 1 to open, thereby fixing the tool body 2 .

[0042] The annular track 4 is used to drive the cutting blade 6 to move in a circular motion, thereby realizing a window structure on the planar structure 2-1 of the tool body 2. The annular track 4 can be of various structures as long as the above functions are realized. Figure 3 As shown, the annular track 4 provided in this embodiment is an elliptical annular cylinder, and an annular groove 4-1 is provided on both the inner and outer surfaces of the annular track 4, and the cross section of the annular groove 4-1 is arc-shaped. A connecting column 4-2 is provided at the end of the annular track 4 installed and connected to the first electric lifting device 4-3, and the cutting knife 6 is connected to the sliding module 6-1. Specifically, the sliding module 6-1 provided in this embodiment is embedded in the annular groove 4-1, so that the cutting knife 6 moves along the annular track 4. Preferably, the sliding module 6-1 includes two sliding modules 6-1, and the two sliding modules 6-1 are symmetrically embedded in the annular groove 4-1 of the inner cylinder and the annular groove 4-1 of the outer cylinder, respectively. The two sliding modules 6-1 ensure that the annular track 4 is subjected to uniform force inside and outside, and avoid deflection of the annular track 4 during the lifting process.

[0043] like Figure 3As shown, the side of the cutting blade 6 is connected to the sliding module 6-1, the bottom of the cutting blade 6 is connected to the motor 6-2 through the reducer 6-4, the side of the connecting column 4-2 is connected to the motor 6-2 through the axial moving module 6-3, and the bottom of the connecting column 4-2 is connected to the first electric lifting device 4-3. When in use, the electric control unit 7 drives the motor 6-2 to rotate, and the motor 6-2 drives the cutting blade 6 to rotate. At the same time, the first electric lifting device 4-3 connected to the cutting blade 6 is driven to rise, so that the cutting blade 6 contacts the planar structure 2-1, and the planar structure 2-1 is cut when the cutting blade 6 rotates.

[0044] Preferably, the cutting blades 6 include multiple groups, and the multiple groups of cutting blades 6 are evenly distributed on the annular track 4. Specifically, Figure 1 As shown, the cutting blades 6 provided in this embodiment include four groups.

[0045] like Figure 1 As shown, it also includes a hydraulic lifting device 5, which is placed in the hollow structure and connected to an electric control unit 7, which drives the hydraulic lifting device 5 to rise or fall. Figure 4 As shown, the electromagnet 3 is a rectangular parallelepiped, and a through hole 3-1 is provided at the center of the electromagnet 3. The through hole 3-1 is coaxial with the annular track 4, and the hydraulic lifting device 5 is lifted from the through hole 3-1 and contacts the plane structure 2-1. After the cutting knife 6 has finished cutting, the hydraulic lifting device 5 is lifted up and contacts the plane structure 2-1 to ensure that after the plane structure 2-1 has been cut, the electric control unit 7 drives the hydraulic lifting device 5 to descend, and the electric control unit 7 drives the second electric lifting device 3-2 connected to the electromagnet 3 to rise, so that the electromagnet 3 contacts and adsorbs the cut plane structure 2-1.

[0046] like Figure 5 As shown, the present invention also provides a novel electric window opening method, using the above-mentioned novel electric window opening tool, comprising the following steps:

[0047] S1: Connect the cable connector 8 to the cable, and lower the tool body 2 into a designated position through the cable.

[0048] S2: The wellhead is powered and transmitted to the tool body 2, and the electric control unit 7 drives the anchor shoe 1-1 to open, thereby fixing the tool body 2.

[0049] S3: The electric control unit 7 drives the cutting knife 6 to rotate. At the same time, the electric control unit 7 drives the first electric lifting device 4-3 connected to the circular track 4 to rise, and the circular track 4 drives the cutting knife 6 to cut the planar structure 2-1.

[0050] S4: After the cutting is completed, the electric control unit 7 drives the first electric lifting device 4-3 connected to the annular track 4 to descend, and the cutting knife 6 is retracted. At the same time, the hydraulic lifting device is driven to rise to ensure that the window contour line is cut completely.

[0051] S5: The electric control unit 7 drives the second electric lifting device 3-2 connected to the electromagnet 3 to rise, and the electromagnet 3 absorbs the cut side wall of the casing.

[0052] The advantages and positive effects of the present invention are:

[0053] The invention has a simple structure and is easy to operate. The tool body is quickly lowered into a designated position through a cable, the pipe column is anchored through an electric control unit, the casing window is opened through an electric cutter, and the casing cut part is recovered through an electromagnet. The invention has a high degree of automation, can greatly improve the window opening efficiency, realize the visualization of the downhole window opening, improve the window opening quality, and has broad application prospects.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A new type of electric window opening tool, characterized by: It includes a tool body, which is a cylinder. A cable connector is provided at one end of the tool body, and the cable connector is connected to the cable. An anchoring component is provided on the outer cylindrical surface of either end of the tool body, and the anchoring component fixes the tool body to the inner wall of the well. The tool body is a hollow structure, and a circular track and an electric control part are provided in the hollow structure. The central axis of the circular track is perpendicular to the central axis of the tool body. The cylindrical surface of the tool body and the circular track are opposite to a plane structure. A cutting knife is slidably provided on the circular track, and an electromagnet is provided at the center of the circular track. Electric lifting devices are provided on one side of the circular track and one side of the electromagnet. When the electric lifting devices are raised respectively, the cutting knife contacts the plane structure, and the electromagnet attracts the plane structure. The anchoring component, the cutting knife, the electromagnet and the electric lifting device are respectively connected to the electric control part.

2. A new electric window opening tool according to claim 1, characterized in that: The anchoring component includes a plurality of anchor shoes distributed in a ring shape. When in use, the electric control unit drives the anchor shoes to open, thereby fixing the tool body.

3. A new electric window opening tool according to claim 1 or 2, characterized in that: The anchoring components are in two groups, and the two groups of anchoring components are respectively placed at two ends of the tool body.

4. A new electric window opening tool according to claim 1 or 2, characterized in that: The annular track is an elliptical annular cylinder, and annular grooves are provided on the inner and outer surfaces of the annular track. The cross section of the annular groove is an arc shape. The cutting knife is connected to a sliding module, and the sliding module is embedded in the annular groove, so that the cutting knife moves along the annular track.

5. A new electric window opening tool according to claim 4, characterized in that: The sliding modules include two, and the two sliding modules are symmetrically embedded in the annular groove of the inner cylindrical surface and the annular groove of the outer cylindrical surface respectively.

6. A new electric window opening tool according to claim 4, characterized in that: The side of the cutting knife is connected to the sliding module, the bottom of the cutting knife is connected to the motor through a reducer, the end of the annular track installed and connected to the electric lifting device is provided with a connecting column, the side of the connecting column is connected to the motor through an axial moving module, and the bottom of the connecting column is connected to the electric lifting device.

7. A new electric window opening tool according to claim 1 or 2, characterized in that: The cutting knives include multiple groups, and the multiple groups of cutting knives are evenly distributed on the annular track.

8. A new electric window opening tool according to claim 1 or 2, characterized in that: It also includes a hydraulic lifting device, which is placed in the hollow structure and connected to the electric control unit, and the electric control unit drives the hydraulic lifting device to rise or fall.

9. A new electric window opening tool according to claim 8, characterized in that: The electromagnet is a rectangular parallelepiped, a through hole is provided at the center of the electromagnet, the through hole is coaxial with the annular track, and the hydraulic lifting device is lifted by the through hole and contacts the planar structure.

10. A novel electric window opening method, using a novel electric window opening tool according to any one of claims 1 to 9, characterized in that: The following steps are included: S1: Connect the cable connector to the cable, and lower the tool body into the designated position through the cable; S2: After power is turned on, the electric control unit drives the anchor shoe to open, so that the tool body is fixed; S3: the electric control unit drives the cutting knife to rotate, and at the same time, the electric control unit drives the first electric lifting device connected to the circular track to rise, and the circular track drives the cutting knife to cut the plane structure; S4: After the cutting is completed, the electric control unit drives the first electric lifting device connected to the circular track to descend, the cutting knife is retracted, and at the same time, the hydraulic lifting device is driven to rise to ensure that the window contour line is cut completely; S5: The electric control unit drives the second electric lifting device connected to the electromagnet to rise, and the electromagnet absorbs the cut side wall of the casing.

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