Spinning plier assembly

Abstract

The invention relates to a spinning clamp assembly which comprises a spinning support, two spinning clamp arms, an opening and closing driver, two spinning mechanisms and a floating assembly. The spinner support is installed at the top of the floating assembly, the two spinner clamp arms are rotatably installed on the spinner support, the opening and closing driver is installed at one ends of the two spinner clamp arms, and the two spinner mechanisms are installed at the other ends of the two spinner clamp arms respectively; the opening and closing driver can drive the two spinning clamp arms to rotate in the horizontal plane and drive the two spinning mechanisms to clamp or release a pipe; the two spinning mechanisms can drive the pipe to rotate to achieve screwing-on or screwing-off. The floating assembly can drive the spinning support to float up and down so that displacement compensation can be conducted on the pipe in the vertical direction during spinning. The device has the beneficial effects that effective vertical displacement compensation can be carried out on the pipe during spinning, and a guarantee is provided for efficient development of oil and gas resources; the spinning mechanism can provide different torques to adapt to different types of pipes, and the pipes cannot be damaged.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas drilling, and in particular to a spin clamp assembly. Background Art

[0002] At present, in the drilling and well repair projects of oil and gas, the connection and disassembly of pipes is a key and high-frequency operation link, and its quality and efficiency are directly related to the progress, safety and economic benefits of the entire project. The traditional pipe operation method mainly relies on manual use of various pliers and other tools. This method is not only labor-intensive, but also requires high physical strength and skills of operators. In addition, the operation efficiency is low and it is difficult to meet the needs of large-scale and rapid construction in modern oil and gas production.

[0003] As the development of oil and gas resources gradually expands to harsh environments such as deep sea and complex formations, pipe connection technology has been posed with more stringent challenges. In deep sea environments, factors such as ocean currents, waves, and platform vibrations cause pipes to be in an extremely complex stress state during the connection process. Especially during the screw-in operation, the pipes will produce unpredictable and frequent micro-displacements in the vertical direction. Traditional screw-in equipment cannot adapt to such dynamic changes due to the lack of an effective displacement compensation mechanism. This leads to problems such as thread cross-threading, wear, and even damage during the screw-in process, which seriously affects the sealing and overall structural strength of the pipe connection. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a screw-on pliers assembly, which solves the technical problem that the prior art cannot compensate for the displacement of the pipe when screwing, thus affecting the sealing performance and overall structural strength of the pipe connection.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] The invention provides a screw-on pliers assembly, comprising a screw-on bracket, two screw-on pliers arms, an opening and closing driver, two screw-on mechanisms and a floating assembly; the screw-on bracket is mounted on the top of the floating assembly, the two screw-on pliers arms are rotatably mounted on the screw-on bracket, the opening and closing driver is mounted on one end of the two screw-on pliers arms, and the two screw-on mechanisms are respectively mounted on the other end of the two screw-on pliers arms; the opening and closing driver can drive the two screw-on pliers arms to rotate in a horizontal plane, driving the two screw-on mechanisms to clamp or release pipes; the two screw-on mechanisms can drive the pipes to rotate to realize screwing or unscrewing; the floating assembly can drive the screw-on bracket to float up and down, so as to compensate for the displacement of the pipes in the vertical direction when screwing.

[0009] Optionally, the floating assembly includes a floating base, a track bracket, a spring guide rod and a floating spring; the track bracket can be slidably installed on the floating base, the spring guide rod is vertically arranged on the floating base, and the track bracket can be slidably connected to the spring guide rail; the floating spring is sleeved on the spring guide rail and is located between the floating base and the track bracket.

[0010] Optionally, composite rollers are arranged on both sides of the floating base; and a return spring is arranged on the rear side of the floating base.

[0011] Optionally, the screw-on mechanism includes a mounting seat, a screw-on drive assembly, a transmission assembly and two screw-on rollers; the mounting seat is arranged at the other end of the screw-on clamp arm, and the screw-on drive assembly is arranged on the mounting seat; the two screw-on rollers are rotatably mounted side by side on the screw-on bracket, and their rotation axes are vertically oriented; the screw-on drive assembly is connected to the screw-on rollers through the transmission assembly to drive the screw-on rollers to rotate; after the four screw-on rollers of the two screw-on mechanisms clamp the pipe, the screw-on drive assembly drives the screw-on rollers to rotate to drive the pipe to rotate for screwing on or off.

[0012] Optionally, the spindle drive assembly includes a variable drive and a planetary reducer; the planetary reducer is mounted on a mounting frame, the variable drive is arranged on the planetary reducer, and the planetary reducer is transmission-connected to the transmission assembly.

[0013] Optionally, the transmission assembly includes a driving gear and two driven gears; the two driven gears are respectively mounted on two spin buckle rollers, and the spin buckle driving assembly is connected to the two driven gears via the driving gear.

[0014] Optionally, the spin-on roller includes an inner roller and a plurality of outer bushings; the plurality of outer bushings are evenly arranged along the axial direction of the inner roller; and the hardness of the outer bushings is lower than the hardness of the inner roller.

[0015] Optionally, the outer surface of the outer bushing is provided with an anti-slip pattern.

[0016] Optionally, a rotatable connecting rod is arranged between the turn-in mechanism and the turn-in bracket, and its rotation axis is vertically oriented; the turn-in bracket, the turn-in clamp arm, the turn-in mechanism and the connecting rod form a parallelogram structure; the four vertices of the parallelogram are respectively the installation point of the connecting rod on the turn-in bracket, the connection point of the connecting rod on the turn-in mechanism, the center point of the turn-in mechanism and the installation point of the turn-in clamp arm on the turn-in bracket.

[0017] (III) Beneficial effects

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a screw-on pliers assembly, which drives the screw-on pliers arm to rotate in the horizontal plane through an opening and closing driver, thereby realizing the clamping and releasing of the pipe by two screw-on mechanisms. The two screw-on mechanisms work together to provide screw-on power for the pipe, ensuring the completion of screw-on and screw-off operations. The floating assembly can drive the screw-on bracket to float up and down, so as to compensate for the displacement of the pipe in the vertical direction during screw-on, ensuring that the screw-on operation is carried out uninterruptedly, avoiding screw-on failure or thread damage due to displacement, and greatly improving the adaptability and reliability of offshore oil and gas production operations in harsh environments. Compared with the existing technology, the operation efficiency is higher, providing a guarantee for the efficient development of oil and gas resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a schematic diagram of the overall structure of the spin-on pliers assembly according to Embodiment 1 of the present invention;

[0021] Figure 2 is a top view of the spinner assembly according to embodiment 1 of the present invention;

[0022] Figure 3 is a structural schematic diagram of a turn-button mechanism according to Embodiment 1 of the present invention;

[0023] Figure 4 is a schematic cross-sectional view of a spinner assembly according to Embodiment 1 of the present invention;

[0024] Figure 5 It is a cross-sectional schematic diagram of the turn-lock mechanism of Example 1 of the present invention.

[0025] [Description of Reference Numerals]

[0026] 1: Spin-lock bracket; 2: Spin-lock clamp arm; 3: Opening and closing driver; 41: Floating base; 42: Track bracket; 43: Spring guide rod; 44: Floating spring; 45: Composite roller; 46: Reset spring; 51: Mounting seat; 52: Spin-lock roller; 521: Inner roller; 522: Outer bushing; 53: Variable driver; 54: Planetary reducer; 55: Driving gear; 56: Driven gear; 57: Connecting rod. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0028] Embodiment 1:

[0029] like Figure 1 and Figure 2 As shown, a specific embodiment of the present invention provides a spin-down pliers assembly, comprising a spin-down bracket 1, two spin-down pliers arms 2, an opening and closing driver 3, two spin-down mechanisms and a floating assembly; the spin-down bracket 1 is installed on the top of the floating assembly, the two spin-down pliers arms 2 are rotatably installed on the spin-down bracket 1, the opening and closing driver 3 is installed on one end of the two spin-down pliers arms 2, and the two spin-down mechanisms are respectively installed on the other end of the two spin-down pliers arms 2; the opening and closing driver 3 can drive the two spin-down pliers arms 2 to rotate in a horizontal plane, driving the two spin-down mechanisms to clamp or release the pipe; the two spin-down mechanisms can drive the pipe to rotate to achieve buckling or detaching; the floating assembly can drive the spin-down bracket 1 to float up and down, so as to compensate for the displacement of the pipe in the vertical direction when buckling.

[0030] Specifically, the opening and closing driver 3 drives the screw clamp arm 2 to rotate in the horizontal plane, so that the two screw mechanisms can clamp and release the pipe. The two screw mechanisms work together to provide screw power for the pipe, ensuring the completion of the screw-on and screw-off operations. The floating assembly can drive the screw bracket 1 to float up and down, so as to compensate for the displacement of the pipe in the vertical direction during screwing, ensure that the screw operation is carried out uninterruptedly, avoid screw failure or thread damage due to displacement, and greatly improve the adaptability and reliability of offshore oil and gas production operations in harsh environments. Compared with the existing technology, the operation efficiency is higher, which provides a guarantee for the efficient development of oil and gas resources. The screw mechanism can provide different torques to adapt to different types of pipes and will not damage the pipes.

[0031] Furthermore, if Figure 1 As shown, the floating assembly includes a floating base 41, a track bracket 42, a spring guide rod 43 and a floating spring 44; the track bracket 42 can be slidably installed on the floating base 41, the spring guide rod 43 is vertically arranged on the floating base 41, and the track bracket 42 can be slidably connected to the spring guide rail; the floating spring 44 is sleeved on the spring guide rail and is located between the floating base 41 and the track bracket 42. The sliding connection between the track bracket 42 and the floating base 41 cooperates with the spring guide rod 43 and the floating spring 44 to form a sensitive elastic support system. When the pipe is vertically displaced during the screwing process due to the force of the thread screwing, the change of the downhole working conditions or the vibration of the wellhead equipment, the track bracket 42 slides smoothly on the floating base 41 under the guidance of the spring guide rod 43, and the floating spring 44 expands and contracts in real time according to the displacement, accurately compensates for the displacement change, and ensures that the screwing clamp assembly and the pipe are always in an ideal contact state.

[0032] Furthermore, if Figure 1As shown, in this embodiment, composite rollers 45 are provided on both sides of the floating base 41; and a reset spring 46 is provided on the rear side of the floating base 41. The floating base 41 can be movably installed above the punch clamp assembly of the iron roughneck through the reset roller, and the floating base 41 realizes the smooth movement of the equipment in the horizontal direction through the composite roller 45. In this embodiment, the composite roller 45 adopts special materials and precision manufacturing technology, has a low rolling friction coefficient and high wear resistance, and ensures that the floating base 41 can quickly and smoothly respond to the horizontal position change requirements of the pipe when bearing the weight of the equipment and the working force. The reset spring 46 can enable the floating base 41 to return to its original position after horizontal movement.

[0033] Furthermore, if Figure 1-Figure 5 As shown, the screw mechanism includes a mounting seat 51, a screw drive assembly, a transmission assembly and two screw rollers 52; the mounting seat 51 is arranged at the other end of the screw clamp arm 2, and the screw drive assembly is arranged on the mounting seat 51; the two screw rollers 52 are rotatably mounted side by side on the screw bracket 1, and their rotation axes are oriented vertically; the screw drive assembly is connected to the screw rollers 52 through the transmission assembly to drive the screw rollers 52 to rotate; after the four screw rollers 52 of the two screw mechanisms clamp the pipe, the screw drive assembly drives the screw rollers 52 to rotate and drives the pipe to rotate for screwing or unscrewing. Among them, the screw drive assembly includes a variable driver 53 and a planetary reducer 54; the planetary reducer 54 is installed on the mounting frame, and the variable driver 53 is arranged on the planetary reducer 54, and the planetary reducer 54 is connected to the two screw rollers 52 in a transmission manner. The variable driver 53 in the screw drive assembly is combined with the planetary reducer 54 to form an efficient power transmission system. The variable drive 53 accurately controls the output torque and speed in real time according to the type, specification and working conditions of the pipe, and after the planetary reducer 54 reduces the speed and increases the torque, it is stably transmitted to the spin buckle roller 52. It can achieve stepless speed regulation. Under the condition of constant power, it can freely switch between high speed and low torque and low speed and high torque, thereby optimizing working efficiency and power output. Specifically, in this embodiment, the transmission assembly includes a driving gear 55 and two driven gears 56; the two driven gears 56 are respectively installed on the two spin buckle rollers 52, and the spin buckle drive assembly is connected to the two driven gears 56 through the driving gear 55.

[0034] Furthermore, if Figure 1 and Figure 3As shown, the spin roller 52 includes an inner roller 521 and a plurality of outer bushings 522; the plurality of outer bushings 522 are evenly arranged along the axial direction of the inner roller 521; the hardness of the outer bushing 522 is lower than that of the inner roller 521. The composite structure of the inner roller 521 and the outer bushing 522 of the spin roller 52 provides excellent contact protection for the pipe. During the spin process, the four spin rollers tightly clamp the drill pipe from different directions, and drive the pipe (drill pipe or oil pipe) to rotate by friction to complete the spin process. The low hardness of the outer bushing 522 forms a flexible contact interface with the pipe during the spin, which can effectively conform to the microscopic undulations and shape deviations of the pipe surface, evenly disperse the spin pressure, and avoid local stress concentration from causing damage to the pipe. It is suitable for both drill pipes and oil pipe buckles. In the complex and changeable pipe operation scenarios of oil production, there is no need to frequently change tools, which greatly improves the operation efficiency and reduces the cost investment and operation complexity. In this embodiment, the outer surface of the outer bushing 522 is also provided with an anti-slip pattern.

[0035] Furthermore, if Figure 4 As shown, a rotatable connecting rod 57 is provided between the screw-in mechanism and the screw-in bracket 1, and its rotation axis is oriented vertically; the screw-in bracket 1, the screw-in clamp arm 2, the screw-in mechanism and the connecting rod 57 form a parallelogram structure; the four vertices of the parallelogram are respectively the installation point of the connecting rod 57 on the screw-in bracket 1, the connection point of the connecting rod 57 on the screw-in mechanism, the center point of the screw-in mechanism and the installation point of the screw-in clamp arm 2 on the screw-in bracket 1. The connecting rod 57 between the screw-in mechanism and the screw-in bracket 1 and the parallelogram structure formed thereby ensure the stability and accuracy of the screw-in process. When the pipe is screwed, no matter how the pipe size, material or wellhead environment changes, the structure always maintains the ideal posture and vertical pressure distribution of the screw-in mechanism relative to the pipe by virtue of its geometric characteristics.

[0036] The use of the spin clamp assembly provided in this embodiment is that when spinning, the two spin clamp arms 2 are driven to rotate in the horizontal plane by the opening and closing driver 3, and the pipe is clamped by the roller of the spin mechanism. Then, according to the type of the pipe (drilling tool or oil pipe), the pipe is driven to be screwed up by the variable driver 53 through the planetary reducer 54. During the screwing process, the floating component compensates for the displacement of the pipe in the vertical direction according to the position change of the pipe during the screwing process.

[0037] Embodiment 2:

[0038] The present embodiment provides an iron roughneck, which includes the spin clamp assembly described in Embodiment 1, as well as a punch clamp assembly, a track assembly and a lifting assembly; the floating base 41 of the floating assembly is movably mounted above the punch clamp assembly through a composite roller 45, the punch clamp assembly is mounted on the lifting assembly, and the lifting assembly is mounted on the track assembly, the lifting assembly can lift the punch clamp assembly vertically, and the track assembly can drive the punch clamp assembly to move closer to and away from the working position.

[0039] In the description of the present invention, it should be understood that 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 technical features indicated. Thus, a feature defined as "first" or "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.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 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.

[0041] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A spinning pliers assembly, characterized in that: It comprises a turnbuckle bracket (1), two turnbuckle clamp arms (2), an opening and closing driver (3), two turnbuckle mechanisms and a floating assembly; The screw-on bracket (1) is mounted on the top of the floating assembly, the two screw-on clamp arms (2) are rotatably mounted on the screw-on bracket (1), the opening and closing driver (3) is mounted on one end of the two screw-on clamp arms (2), and the two screw-on mechanisms are respectively mounted on the other end of the two screw-on clamp arms (2); the opening and closing driver (3) can drive the two screw-on clamp arms (2) to rotate in a horizontal plane, driving the two screw-on mechanisms to clamp or release the pipe; the two screw-on mechanisms can drive the pipe to rotate to achieve screw-on or screw-off; The floating component can drive the screw-in bracket (1) to float up and down, so as to compensate for the displacement of the pipe in the vertical direction when the screw-in is turned.

2. The spin-on pliers assembly according to claim 1, characterized in that: The floating assembly comprises a floating base (41), a track bracket (42), a spring guide rod (43) and a floating spring (44); The track bracket (42) can be slidably mounted on the floating base (41) up and down, the spring guide rod (43) is vertically arranged on the floating base (41), and the track bracket (42) can be slidably connected to the spring guide rail; the floating spring (44) is sleeved on the spring guide rail and is located between the floating base (41) and the track bracket (42).

3. The spin-on pliers assembly according to claim 2, characterized in that: Composite rollers (45) are arranged on both sides of the floating base (41); and a return spring (46) is arranged on the rear side of the floating base (41).

4. The spinner assembly according to claim 1, characterized in that: The turn-button mechanism comprises a mounting seat (51), a turn-button driving assembly, a transmission assembly and two turn-button rollers (52); A mounting seat (51) is arranged at the other end of the turn-lock pliers arm (2), and a turn-lock driving assembly is arranged on the mounting seat (51); two turn-lock rollers (52) are rotatably mounted side by side on the turn-lock bracket (1), and their rotation axes are oriented vertically; the turn-lock driving assembly is connected to the turn-lock rollers (52) through a transmission assembly to drive the turn-lock rollers (52) to rotate; After the four screw-in rollers (52) of the two screw-in mechanisms clamp the pipe, the screw-in driving assembly drives the screw-in rollers (52) to rotate, thereby driving the pipe to rotate and perform screwing or unscrewing.

5. The spinner assembly according to claim 4, characterized in that: The spindle drive assembly includes a variable drive (53) and a planetary reducer (54); The planetary reducer (54) is mounted on a mounting frame, the variable drive (53) is arranged on the planetary reducer (54), and the planetary reducer (54) is transmission-connected to the transmission assembly.

6. The spinner assembly according to claim 4, characterized in that: The transmission assembly includes a driving gear (55) and two driven gears (56); The two driven gears (56) are respectively mounted on the two spin buckle rollers (52), and the spin buckle driving assembly is connected to the two driven gears (56) via a driving gear (55).

7. The spinner assembly according to claim 4, characterized in that: The spin-on roller (52) comprises an inner roller (521) and a plurality of outer bushings (522); A plurality of outer bushings (522) are evenly arranged along the axial direction of the inner roller (521); The hardness of the outer bushing (522) is lower than the hardness of the inner roller (521).

8. The spinner assembly according to claim 7, characterized in that: The outer surface of the outer bushing (522) is provided with an anti-slip pattern.

9. The spinner pliers assembly according to claim 1, characterized in that: A rotatable connecting rod (57) is arranged between the turn-lock mechanism and the turn-lock bracket (1), and its rotation axis is oriented vertically; The turnbuckle bracket (1), the turnbuckle clamp arm (2), the turnbuckle mechanism and the connecting rod (57) form a parallelogram structure; The four vertices of the parallelogram are respectively the installation point of the connecting rod (57) on the turn-lock bracket (1), the connection point of the connecting rod (57) on the turn-lock mechanism, the center point of the turn-lock mechanism and the installation point of the turn-lock clamp arm (2) on the turn-lock bracket (1).

Images