Pure electric oil casing cutting tool

Abstract

The utility model discloses a pure electric oil casing cutting tool which comprises a battery module, a motor module arranged on the right side of the battery module, a gearbox module arranged on the right side of the motor module, a transmission module arranged on the right side of the gearbox module, and an anchoring module arranged on the right side of the transmission module. The tool bit module is arranged on the right side of the anchoring module and is a cutting wheel tool bit, a piston is driven by stretching hydraulic pressure to provide power for rotation, potential safety hazards of cable chemical cutting are eliminated, and gunpowder is abandoned; according to the pure electric cutting tool, the problems that operation is limited and a notch is in a horn shape due to traditional cutting are solved, a clean and flush end opening can be formed through the pure electric cutting tool, no chippings exist, follow-up fishing is facilitated, and a casing pipe on the outer layer is not damaged under the condition that an oil pipe is successfully cut.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a pure electric oil casing cutting tool. Background Art

[0002] With the exploration and development of three-high gas wells, the downhole fluid causes serious corrosion to the production string through physical and chemical reactions. During the well repair operation, the production string and the packer need to be pulled out. Due to the corrosion and deformation of the tubing, if the force of unsealing the packer is too large, the production string is at risk of breaking. In order to avoid more serious downhole accidents, it is necessary to cut and recover the severely corroded tubing.

[0003] Traditional tubing cutting types mainly include energy-gathering cutting, cable mechanical cutting, hydraulic mechanical cutting and cable chemical cutting. Among them, energy-gathering cutting is the most widely used cutting method in oil and gas fields. Energy-gathering cutting has limitations in highly inclined well sections and mismatched pipe strings. The advantages of cable mechanical cutting are accurate cutting point location, fast operation and full visualization. The disadvantage is that it has high requirements for the upper passability of the cutting point and the operating well inclination. The hydraulic mechanical cutting operation speed is fast, but the disadvantage is that the cutting point cannot be accurately located, there are errors, the incision is trumpet-shaped, and the drill pipe is used for lowering, which is slow and time-consuming. The incision end of the cable chemical cutting is flat and there is no trumpet. After the cutting is completed, there is no solid residue and no impurities fall into the well; the disadvantage is that it involves pyrotechnics, which are difficult to store and transport. The cutting tool string is equipped with a detonator, which generates a strong electrical signal and is easy to detonate. Radio silence is required during operation, and the walkie-talkie used for communication cannot be used, which will affect the communication of other operations on the offshore platform. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model solves the problems in the prior art of potential safety hazards caused by chemical cutting of cables and the problems of limited operation and trumpet-shaped incisions caused by traditional cutting.

[0005] A pure electric oil casing cutting tool comprises a battery module, a motor module is arranged on the right side of the battery module, a gearbox module is arranged on the right side of the motor module, a transmission module is arranged on the right side of the gearbox module, an anchor module is arranged on the right side of the transmission module, and a cutter head module is arranged on the right side of the anchor module.

[0006] Furthermore, the cutter head module is a cutting wheel cutter head, which uses a stretching hydraulic drive piston to provide power for rotation.

[0007] Furthermore, the battery module is a cylindrical structure, in which power supply and communication components are arranged.

[0008] Furthermore, the cutter head module is a cylindrical barrel-shaped structure, the top of which is a conical top cover, and a rectangular through groove is arranged in the middle of the cutter head module.

[0009] Furthermore, the cutter head module is connected to the anchoring module via threads.

[0010] Furthermore, three spring anchor claws are arranged inside the anchoring module.

[0011] Furthermore, the anchoring module and the cutter head module share the same hydraulic chamber.

[0012] Beneficial effects of the utility model:

[0013] 1. Eliminate the potential safety hazard of chemical cutting of cables and abandon gunpowder;

[0014] 2. Solve the problems of limited operation and trumpet-shaped incision caused by traditional cutting.

[0015] The pure electric cutting tool of the present application can form a clean and flush port without debris, which is convenient for subsequent salvage and ensures that the outer casing is not damaged when the oil pipe is successfully cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a pure electric oil casing cutting tool;

[0017] In the figure: 1-battery module, 2-motor module, 3-gearbox module, 4-transmission module, 5-anchor module, 6-cutter head module. DETAILED DESCRIPTION

[0018] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like 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 an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] In this embodiment, as shown in the attached Figure 1 As shown, a pure electric oil casing cutting tool includes a battery module 1, a motor module 2 is arranged on the right side of the battery module 1, a gearbox module 3 is arranged on the right side of the motor module 2, a transmission module 4 is arranged on the right side of the gearbox module 3, an anchor module 5 is arranged on the right side of the transmission module 4, and a cutter head module 6 is arranged on the right side of the anchor module 5.

[0022] Furthermore, the cutter head module 6 is a cutting wheel cutter head, which is driven by a stretching hydraulic drive piston to provide power for rotation.

[0023] Furthermore, the battery module 1 is a cylindrical structure, in which power supply and communication components are arranged.

[0024] Furthermore, the cutter head module 6 is a cylindrical barrel-shaped structure, the top of which is a conical top cover, and a rectangular through groove is provided in the middle of the cutter head module 6.

[0025] Furthermore, the cutter head module 6 is connected to the anchoring module 5 via threads.

[0026] Furthermore, three spring anchor claws are arranged inside the anchoring module 5 .

[0027] Furthermore, the anchoring module 5 and the cutter head module 6 share the same hydraulic chamber.

[0028] The specific working principle of this application is as follows:

[0029] The present application realizes product functions through an electronic controller with adjustable operating parameters. The cutting tool is started by clicking the "start command". The battery module 1 provides electrical energy and is connected to the motor module 2, which is connected to the gearbox module 3, which converts the high-speed low-torque input into a low-speed high-torque output. The rotational output acts on the drive shaft of the slowly rotating cutter head module 6. The drive shaft is equipped with a power output mechanism connected to the hydraulic pump assembly. When the drive shaft rotates, it provides energy to the hydraulic pump assembly to generate positive hydraulic pressure to drive the anchor claw in the anchor module 5 and the piston in the cutter head module 6. As the pressure increases, the tool will be tightly anchored to the tubing, and the blade mounted on the rotating cutter head hydraulic piston will contact the inner wall of the tubing. After the blade continues to rotate for a few minutes, the tensile shear force generated will be sufficient to cut the tubing. After the tubing is cut, the extended cutter head piston and anchoring part will be automatically retracted, facilitating the smooth extraction of the tool string from the wellbore.

[0030] Beneficial effects of the utility model:

[0031] 1. Eliminate the potential safety hazard of chemical cutting of cables and abandon gunpowder;

[0032] 2. Solve the problems of limited operation and trumpet-shaped incision caused by traditional cutting.

[0033] The pure electric cutting tool of the present application can form a clean and flush port without debris, which is convenient for subsequent salvage and ensures that the outer casing is not damaged when the oil pipe is successfully cut.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pure electric oil casing cutting tool, characterized in that: The invention comprises a battery module (1), a motor module (2) is arranged on the right side of the battery module (1), a gearbox module (3) is arranged on the right side of the motor module (2), a transmission module (4) is arranged on the right side of the gearbox module (3), an anchor module (5) is arranged on the right side of the transmission module (4), and a cutter head module (6) is arranged on the right side of the anchor module (5).

2. A pure electric oil casing cutting tool according to claim 1, characterized in that: The cutter head module (6) is a cutting wheel cutter head, which is driven by a stretching hydraulic drive piston to provide power for rotation.

3. A pure electric oil casing cutting tool according to claim 1, characterized in that: The battery module (1) is a cylindrical structure, and a power source and a communication component are arranged inside the battery module.

4. A pure electric oil casing cutting tool according to claim 1, characterized in that: The cutter head module (6) is a cylindrical barrel-shaped structure, the top of which is a conical top cover, and a rectangular through groove is provided in the middle of the cutter head module (6).

5. A pure electric oil casing cutting tool according to claim 4, characterized in that: The cutter head module (6) is connected to the anchor module (5) via threads.

6. A pure electric oil casing cutting tool according to claim 4, characterized in that: Three spring anchor claws are arranged inside the anchoring module (5).

7. A pure electric oil casing cutting tool according to claim 2, characterized in that: The anchor module (5) and the cutter head module (6) share the same hydraulic chamber.

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