Residual stress regulation and control device and method for petroleum drilling tool

Abstract

The invention relates to a residual stress regulation and control device and method for a petroleum drilling tool. The device comprises a wave guide part, a transducer locking part and an ultrasonic transducer. The wave guide part is of a hollow cylinder structure with openings in the two ends, threads are arranged in the wave guide part, one end of the wave guide part is in an openable state, the wave guide part can be divided into a first fixing part and a second fixing part in the height direction, opening and closing are achieved, and the wave guide part is tightly attached to the drilling tool taper thread part; the transducer locking parts are arranged on the peripheral wall of the wave guide part, and the number of the transducer locking parts is more than two; the ultrasonic transducers are arranged on the transducer locking parts, the ultrasonic transducers are connected with the wave guide part through the transducer locking parts, and the number of the ultrasonic transducers is the same as that of the transducer locking parts; through the arrangement, the problems that the mechanical performance of the drilling tool is influenced by the existence of residual stress, the tooth bottom is cracked and even fractured, and the efficiency and safety of drilling operation are influenced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling tool regulation, and in particular to a residual stress regulation device and a regulation method for oil drilling tools. Background Art

[0002] During the production and use of oil drilling tools, residual stress will be generated inside the drilling tools due to factors such as processing, welding or inevitable internal stress of materials. If these residual stresses are not controlled in time, they may have a serious impact on the performance and safety of the drilling tools. Especially in the tapered thread parts of the drilling tools, these residual stresses are likely to cause stress concentration, which in turn leads to cracking, fracture and other faults in the thread parts. Especially in high pressure, high temperature and complex geological environments, the drilling tools will be affected by unpredictable pulsating alternating loads during operation, which increases the risk of damage to the tapered thread parts.

[0003] The particularity of the tapered thread of the drill tool: The tapered thread of the drill tool is the part that is most stressed and worn. Due to the particularity of the thread shape, the tapered thread is prone to produce a large stress concentration during use, especially at the root of the thread. During the processing, the threaded part is affected by metal deformation, cutting force and internal defects of the material, and often has a certain amount of residual stress. If these residual stresses are not regulated in time, they will directly affect the mechanical properties of the drill tool, causing cracks or even fractures at the root of the thread, thereby affecting the efficiency and safety of the drilling operation. Summary of the invention

[0004] In view of this, the present application provides a residual stress control device and control method for oil drilling tools, which solves the problem that traditional methods cannot effectively control the residual stress of tapered threads through innovative control means, thereby improving the service life and safety of the drilling tools.

[0005] A residual stress regulating device for a petroleum drilling tool is suitable for regulating the residual stress of a tapered threaded portion of the drilling tool, comprising a waveguide portion, a transducer locking portion and an ultrasonic transducer; the waveguide portion is a hollow cylindrical structure with openings at both ends, a thread is arranged inside the waveguide portion, and one end of the waveguide portion is in an openable and closable state, so that the waveguide portion can be divided into a first fixed portion and a second fixed portion in a height direction to achieve opening and closing, and the waveguide portion is tightly fitted with the tapered threaded portion of the drilling tool; the transducer locking portion is arranged on the outer peripheral wall of the waveguide portion, and the number of the transducer locking portions is more than two and is evenly distributed on the first fixed portion and the second fixed portion of the waveguide portion; the ultrasonic transducer is arranged on the transducer locking portion, the ultrasonic transducer is connected to the waveguide portion through the transducer locking portion, and the number of the ultrasonic transducers is the same as the number of the transducer locking portions.

[0006] In a possible implementation, the transducer locking portion includes a base and a connecting block; the base is fixedly connected to the outer peripheral wall of the waveguide portion; the connecting block is arranged at the opposite end where the base is connected to the waveguide portion, and the opposite end where the connecting block is connected to the base is connected to the ultrasonic transducer.

[0007] In a possible implementation, an outer peripheral wall of the waveguide portion uniformly extends outward to form an extension portion, and the extension portion is connected to the base.

[0008] In a possible implementation, the four corners of the base extend outward a certain distance to form a second extension portion, so that the base forms a receiving portion, the connecting block is arranged in the receiving portion, and the outer peripheral wall of the connecting block is connected to the second extension portion.

[0009] In a possible implementation, a flange is provided at one end of the ultrasonic transducer, a flange is provided at a connection end of the connection block connected to the ultrasonic transducer, and the ultrasonic transducer is connected to the connection block via the flange.

[0010] In a possible implementation, the waveguide further includes a magnetic attraction structure, which is disposed on the waveguide and located at the first fixing portion or the second fixing portion of the waveguide.

[0011] In a possible implementation, the connection between the first fixed part and the second fixed part of the waveguide part extends outward to form a first magnetic part and a second magnetic part, the upper extension part and the lower extension part are plate-like structures, and the magnetic structure is detachably arranged on the first magnetic part or the second magnetic part.

[0012] In a possible implementation, it further includes a bolt, a threaded hole is provided on the second extension portion, and the base is fixed to the waveguide portion by the bolt.

[0013] A residual stress control method for a petroleum drill tool uses the above-mentioned residual stress control device for the petroleum drill tool to control the tapered threaded portion of the drill tool to be controlled, comprising the following steps: Step 1: open the waveguide part and put the tapered threaded portion of the drill tool to be controlled into the waveguide part; Step 2: tighten the first fixing part and the second fixing part of the waveguide part through a magnetic attraction structure so that the inner wall of the waveguide part is tightly fitted with the tapered threaded portion of the drill tool to be controlled; Step 3: turn on the external power supply to start controlling the tapered threaded portion of the drill tool to be controlled.

[0014] The beneficial effects of the present invention are as follows: a waveguide part, a transducer locking part and an ultrasonic transducer are arranged; the waveguide part is a hollow cylindrical structure with openings at both ends, a thread is arranged inside the waveguide part, and one end of the waveguide part is in an openable and closable state, so that the waveguide part can be divided into a first fixed part and a second fixed part in the height direction to achieve opening and closing, and the waveguide part and the taper thread part of the drill tool are tightly fitted; the transducer locking part is a block structure, the transducer locking part is arranged on the outer peripheral wall of the waveguide part, and the number of the transducer locking parts is more than two, which are evenly distributed on the first fixed part and the second fixed part of the waveguide part; the ultrasonic transducer is a "convex" structure, the ultrasonic transducer is arranged on the transducer locking part, the ultrasonic transducer is connected to the waveguide part through the transducer locking part, and the number of the ultrasonic transducers is the same as the number of the transducer locking parts, and the residual stress of the threaded part is adjusted by combining the waveguide part, the transducer locking part and the ultrasonic transducer to alleviate or equalize the tooth bottom cracking problem caused by the residual stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram showing the specific structure of the residual stress control device for a petroleum drilling tool according to an embodiment of the present application;

[0016] Figure 2 A schematic diagram showing the overall structure of a residual stress regulating device for a petroleum drilling tool according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of the present invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply 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.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "join", "hinge", etc. 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1 to Figure 2 As shown, the residual stress control device of the oil drilling tool is suitable for controlling the residual stress of the tapered threaded part of the drilling tool, and includes a waveguide part 100, a transducer locking part 200 and an ultrasonic transducer 300. The waveguide part 100 is a hollow cylindrical structure with two ends open, and the interior of the waveguide part 100 is provided with threads, and one end of the waveguide part 100 is in an openable state, so that the waveguide part 100 can be divided into a first fixed part and a second fixed part in the height direction to achieve opening and closing, and the waveguide part 100 is tightly fitted with the tapered threaded part 400 of the drilling tool to be controlled. The transducer locking part 200 is a block structure, and the transducer locking part 200 is arranged on the outer peripheral wall of the waveguide part 100, and the number of the transducer locking parts 200 is more than two, and is evenly distributed on the first fixed part and the second fixed part of the waveguide part 100. The ultrasonic transducer 300 is a cylindrical structure and is disposed on the transducer locking portion 200 . The ultrasonic transducer 300 is connected to the waveguide portion 100 via the transducer locking portion 200 , and the number of the ultrasonic transducers 300 is the same as the number of the transducer locking portions 200 .

[0023] Specifically, the ultrasonic transducer 300 and the waveguide 100 are provided because the ultrasonic critical refraction longitudinal wave method is used to regulate the residual stress of the tapered threaded portion 400 of the drill tool to be regulated. The tapered threaded portion 400 of the drill tool to be regulated is fixed by the waveguide 100. In order to fix the tapered threaded portion 400 of the drill tool to be regulated in the waveguide 100 and achieve a close fit between the tapered threaded portion 400 of the drill tool to be regulated and the waveguide 100, the waveguide 100 is provided as a hollow cylindrical structure with openings at both ends. The interior of the waveguide 100 is provided with threads, and one end of the waveguide 100 is in an openable state, so that the waveguide 100 can be fixed in the waveguide 100. 00 is divided into a first fixing part and a second fixing part in the height direction to achieve opening and closing. In order to better regulate the residual stress of the tapered threaded part 400 of the drill tool to be regulated, the ultrasonic transducer 300 is arranged on the peripheral wall of the waveguide part 100. In order to better fix the ultrasonic transducer 300 on the peripheral wall of the waveguide part 100, a transducer locking part 200 is arranged between the ultrasonic transducer 300 and the waveguide part 100, which is used to lock the ultrasonic transducer 300 on the waveguide part 100, and the ultrasonic transducer 300 can be replaced when a failure or damage occurs to the ultrasonic transducer 300. In order to be able to quickly regulate the residual stress of the tapered threaded portion 400 of the drill tool to be regulated, two or more ultrasonic transducers 300 are set, and the regulation speed is accelerated by increasing the number. Because the ultrasonic transducer 300 requires the transducer locking portion 200 to be fixed on the waveguide portion 100, the transducer locking portion 200 is also set to two or more, and the number is the same as that of the ultrasonic transducers 300. Taking this embodiment as an example, but not limited to this embodiment, the number of ultrasonic transducers 300 is six, and all are arranged around the outer peripheral wall of the waveguide portion 100.

[0024] Specifically, Figure 1 As shown, the number of ultrasonic transducers 300 and transducer locking parts 200 are both 6, which are evenly distributed on the first fixing part and the second fixing part of the waveguide part 100.

[0025] In a possible implementation, the transducer locking portion 200 includes a base 210 and a connecting block 220. The base 210 is a block structure, and the base 210 is fixedly connected to the outer peripheral wall of the waveguide portion 100. The connecting block 220 is a cylindrical structure, and the connecting block 220 is arranged at the opposite end where the base 210 is connected to the waveguide portion 100, and the opposite end where the connecting block 220 is connected to the base 210 is connected to the ultrasonic transducer 300.

[0026] Specifically, Figure 1As shown, the specific structure of the transducer locking portion 200 includes a base 210 and a connecting block 220. The base 210 is used to connect to the outer peripheral wall of the waveguide portion 100 and is a block structure. The connecting block 220 is used to connect the ultrasonic transducer 300, and is connected to the ultrasonic transducer 300 through the opposite end connected to the base 210 via the connecting block 220, so that the ultrasonic transducer 300 is fixed on the outer peripheral wall of the waveguide portion 100.

[0027] In a possible implementation, the outer peripheral wall of the waveguide portion 100 uniformly extends outward to form an extension portion 130 , and the extension portion 130 is connected to the base 210 .

[0028] Specifically, Figure 1 As shown, because the outer peripheral wall of the waveguide portion 100 is arc-shaped and the base 210 is a block-shaped structure, in order to facilitate better connection between the base 210 and the outer peripheral wall of the waveguide portion 100, the outer peripheral wall of the waveguide portion 100 is uniformly extended outward to form an extension portion 130, and the planar shape and size of the extension portion 130 are the same as the planar shape and size of the base 210, which is convenient for connection.

[0029] In a possible implementation, the four corners of the base 210 extend outward a certain distance to form a second extension portion 211, so that the base 210 forms a receiving portion, the connecting block 220 is disposed in the receiving portion, and the outer peripheral wall of the connecting block 220 is connected to the second extension portion 211.

[0030] Specifically, Figure 1 As shown, in order to avoid breakage between the base 210 and the connecting block 211, the four corners of the base 210 are extended outward by a certain distance to form a second extension portion 211, so that the base 210 forms a receiving portion, the connecting block 220 is arranged in the receiving portion, and the outer peripheral wall of the connecting block 220 is connected to the second extension portion 211.

[0031] In a possible implementation, a flange is provided at one end of the ultrasonic transducer 300 , a flange is provided at a connection end of the connection block 220 connected to the ultrasonic transducer 300 , and the ultrasonic transducer 300 is connected to the connection block 220 via the flange.

[0032] Specifically, Figure 1 As shown, a flange is provided at one end of the ultrasonic transducer 300 , and a flange is provided at the connection end where the connecting block 220 is connected to the ultrasonic transducer 300 so that the ultrasonic transducer 300 can be replaced if it is damaged.

[0033] In a possible implementation, a magnetic attraction structure 500 is further included, and the magnetic attraction structure 500 is arranged on the waveguide part 100 and is located at the first fixed part or the second fixed part of the waveguide part 100. The connection between the first fixed part and the second fixed part of the waveguide part 100 extends outwardly to form a first magnetic attraction part 111 and a second magnetic attraction part 121, and the upper extension part 111 and the lower extension part 121 are plate-like structures with the same shape and size. The magnetic attraction structure 500 is detachably arranged on the first magnetic attraction part 111 or the second magnetic attraction part 121.

[0034] Specifically, Figure 1 As shown, in order to ensure that the tapered threaded portion 400 of the drill tool to be regulated fits tightly with the waveguide portion 100, a magnetic structure 500 is further provided, and the connection between the first fixing portion and the second fixing portion of the waveguide portion 100 extends outwardly to form a first magnetic portion 111 and a second magnetic portion 121, the first magnetic portion 111 and the second magnetic portion 121 are plate-like structures, the number of the first magnetic portion 111 and the second magnetic portion 121 are both two, and are arranged along the height direction of the waveguide portion 100, the first magnetic portion 111 and the second magnetic portion 121 extend a certain distance along the outside of the circumference of the waveguide portion 100, the two first magnetic portions 111 are arranged on the first fixing portion of the waveguide portion 100, and are located at the intersection of the two portions, and have a certain area, so that the magnetic structure 500 can be arranged on the first magnetic On the suction part 111, two second magnetic suction parts 121 are arranged on the second fixed part of the waveguide part 100, and are located at the intersection of the two parts, and have a certain area, and the distance that the second magnetic suction part 121 extends along the outer side of the circumference of the waveguide part 100 is longer than the distance that the first magnetic suction part 111 extends along the outer side of the circumference of the waveguide part 100, and the redundant extension part can be formed into a handle to facilitate opening the waveguide part 100. When in use, the magnetic suction structure 500 magnetically attracts the first magnetic suction part 111 and the second magnetic suction part 121 together. After the regulation is completed, the magnetic suction structure 500 is removed, which can separate the first magnetic suction part 111 and the second magnetic suction part 121, and then separate the first fixed part and the second fixed part, so that the waveguide part 100 is in an open state, and the tapered threaded part 400 of the drill tool to be regulated is taken out.

[0035] In a possible implementation, bolts are further included, threaded holes are provided on the second extension portion 211, and the base is fixed to the waveguide portion 100 by bolts. Through such a setting, the base 210 can be better fixed to the outer peripheral wall of the waveguide portion 100.

[0036] In one possible implementation, Figure 1 to Figure 2 , further comprising a positioning table 600, the positioning table 600 being arranged at an end of the waveguide 100 that can be opened and closed, Figure 1 It can be seen that the positioning table 600 is arranged on the top of the waveguide part 100. Figure 1 The upper side is the top of the waveguide part 100, the positioning table 600 is a cylindrical plate structure with both ends being hollow, and the positioning table 600 is also divided into two parts, a first part and a second part, which are respectively arranged at one end of the first fixed part and one end of the second fixed part, and the first part and the second part are connected by a hinge, so that the first fixed part and the second fixed part of the waveguide part 100 can be opened and closed 180 degrees.

[0037] In a possible implementation, the gap between the thread and the waveguide is filled with high-temperature blue oil, thereby enhancing the ultrasonic wave conduction effect.

[0038] In a possible implementation, the ultrasonic transducer 300 includes a plurality of sound wave emitting units, which can adjust the frequency, power and incident angle of the ultrasonic wave as needed to meet the control requirements of different drilling tool types and threaded areas.

[0039] A method for regulating residual stress of a petroleum drill tool, using the residual stress regulating device of the petroleum drill tool as claimed in the claim to regulate the tapered threaded portion of the drill tool to be regulated, comprising the following steps: Step 1: Open the waveguide part and place the tapered threaded portion of the drill tool to be regulated into the waveguide part. Step 2: Tighten the first fixing part and the second fixing part of the waveguide part by means of a magnetic attraction structure, so that the inner wall of the waveguide part and the tapered threaded portion of the drill tool to be regulated fit tightly. Step 3: Turn on the external power supply and start regulating the tapered threaded portion of the drill tool to be regulated.

[0040] The present application is provided with a waveguide part 100, a transducer locking part 200 and an ultrasonic transducer 300. The ultrasonic transducer 300 and the waveguide part 100 are provided because the ultrasonic critical refraction longitudinal wave method is used to regulate the residual stress of the tapered thread part 400 of the drill tool to be regulated. In order to be able to quickly regulate the residual stress of the tapered thread part 400 of the drill tool to be regulated, two or more ultrasonic transducers 300 are provided. In order to ensure that the tapered thread part 400 of the drill tool to be regulated fits tightly with the waveguide part 100, a magnetic attraction structure 500 is also provided. In order to realize the positioning function, a positioning table 600 is also provided. Through the above settings, the present application can regulate the residual stress of the tapered thread part of the drill tool, thereby improving the service life and safety of the drill tool, and solving the technical problem that the residual stress is easy to cause stress concentration, and then cause cracking, fracture and other faults in the threaded part.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A residual stress control device for a petroleum drilling tool, suitable for controlling the residual stress of a taper thread portion of a drilling tool, characterized in that: It includes a waveguide part, a transducer locking part and an ultrasonic transducer; The waveguide part is a hollow cylindrical structure with two ends open, a thread is arranged inside the waveguide part, and one end of the waveguide part is in an openable state, so that the waveguide part can be divided into a first fixed part and a second fixed part in the height direction to achieve opening and closing, and the waveguide part is tightly fitted with the taper thread part of the drilling tool; The transducer locking portion is arranged on the outer peripheral wall of the waveguide portion, and the number of the transducer locking portions is more than two; The ultrasonic transducer is arranged on the transducer locking part, the ultrasonic transducer is connected to the waveguide part through the transducer locking part, and the number of the ultrasonic transducers is the same as the number of the transducer locking parts.

2. The residual stress control device for oil drilling tools according to claim 1, characterized in that: The transducer locking portion includes a base and a connecting block; The base is fixedly connected to the outer peripheral wall of the waveguide; The connection block is disposed at an opposite end of the base where the base is connected to the waveguide portion, and an opposite end of the connection block where the base is connected is connected to the ultrasonic transducer.

3. The residual stress control device for oil drilling tools according to claim 2, characterized in that: An extension portion is uniformly extended outward from the outer peripheral wall of the waveguide portion, and the extension portion is connected to the base.

4. The residual stress control device for oil drilling tools according to claim 3, characterized in that: The four corners of the base are extended outwards for a certain distance to form a second extension portion, so that the base forms a receiving portion, the connecting block is arranged in the receiving portion, and the outer peripheral wall of the connecting block is connected to the second extension portion.

5. The residual stress control device for oil drilling tools according to claim 4, characterized in that: One end of the ultrasonic transducer is provided with a flange, the connection end of the connection block connected to the ultrasonic transducer is provided with a flange, and the ultrasonic transducer is connected to the connection block through the flange.

6. The residual stress control device for oil drilling tools according to any one of claims 1 to 5, characterized in that: The invention also includes a magnetic attraction structure, which is arranged on the waveguide part and located at the first fixing part and the second fixing part of the waveguide part.

7. The residual stress control device for oil drilling tools according to claim 6, characterized in that: The first fixed part and the second fixed part of the waveguide part have a first magnetic part and a second magnetic part extending outward from their connection points. The upper extension part and the lower extension part are plate-like structures with the same shape and size. The magnetic structure can be detachably arranged on the first magnetic part or the second magnetic part.

8. The residual stress control device for oil drilling tools according to claim 5, characterized in that: It also includes bolts, a threaded hole is provided on the second extension part, and the base is fixed to the waveguide part by bolts.

9. A method for regulating residual stress of a petroleum drilling tool, characterized in that: The residual stress regulating device for a petroleum drill tool according to any one of claims 1 to 8 is used to regulate the tapered threaded portion of the drill tool to be regulated, comprising the following steps: Step 1: Open the waveguide and place the taper thread of the drill tool to be regulated into the waveguide; Step 2: The first fixing part and the second fixing part of the waveguide are tightly attracted by the magnetic attraction structure, so that the inner wall of the waveguide is closely fitted with the tapered thread part of the drill tool to be regulated; Step 3: Turn on the external power supply and start to adjust the taper thread part of the drill bit to be adjusted.

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