A torsion impactor and its use

Abstract

The application provides a torsion impactor and application thereof, the impactor comprising a shell, an upper guide pipe, a bearing impact body, an impact piece, a transmission piece and a central pipe, the central pipe, the transmission piece, the impact piece, the bearing impact body and the shell are sequentially sleeved and fixed from inside to outside; the upper guide pipe is provided with a shunt hole; a cavity is formed between the shell and the upper guide pipe, the bearing impact body is provided with a first liquid passing hole, the impact piece is provided with a second liquid passing hole, the inner cavity of the upper guide pipe, the shunt hole, the cavity, the first liquid passing hole and the second liquid passing hole can be communicated and can be connected with fluid to drive the transmission piece to rotate within a limited angle range; the transmission piece is provided with a third liquid passing hole, a ring cavity is formed between the transmission piece and the central pipe, the central pipe is provided with a fourth liquid passing hole, the inner cavity of the central pipe, the fourth liquid passing hole, the ring cavity, the third liquid passing hole and the second liquid passing hole can be communicated with each other along with the rotation of the transmission piece, and can be connected with fluid to drive the impact piece to rotate within a limited angle range and simultaneously generate reciprocating impact on the bearing impact body.

Description

Technical Field

[0001] This invention relates to the field of downhole tools for oil and gas well drilling, and more specifically, to a torsion impactor and its application. Background Technology

[0002] Torque impactors can solve the stick-slip problem encountered by PDC drill bits during drilling, helping to improve the drilling efficiency of PDC drill bits. The main principle is to convert the fluid energy of the drilling fluid into mechanical impact energy. The circumferential reciprocating torsional impact load generated by the torsion impactor allows the drill bit to cut the formation at a higher speed and with greater torque, avoiding stick-slip vibration and lateral vortex phenomena induced by insufficient drill bit torque. However, existing torsion impactors still have structural shortcomings, resulting in low impact frequencies and poor stability. Summary of the Invention

[0003] The purpose of this invention is to address at least one of the aforementioned shortcomings of the prior art. For example, one objective of this invention is to provide a torsion impactor and its application to improve the impact frequency and stability of the torsion impactor.

[0004] To achieve the above objectives, the present invention provides a torsion impactor, comprising a shell, an upper guide tube, a bearing body, an impact member, a transmission member, a central tube, and a lower guide tube. The central tube, transmission member, impact member, bearing body, and shell are sequentially sleeved from the inside out and fixed in relative axial and radial positions. The lower end of the upper guide tube is sleeved on the upper end of the central tube and passes through the shell. A plurality of diversion holes are formed on the side wall of the upper guide tube. A cavity is formed between the inner wall of the shell and the outer wall of the upper guide tube. A plurality of first liquid passage holes are formed on the side wall of the bearing body, and a plurality of... The second liquid passage, the inner cavity of the upper guide tube, the diversion hole, the cavity, the first liquid passage and the second liquid passage can be connected and fluid can be introduced to drive the transmission component to rotate within the limited angle range; several third liquid passages are opened on the side wall of the transmission component, and an annular cavity is formed between the inner wall of the transmission component and the outer wall of the central tube. Several fourth liquid passages are opened on the side wall of the central tube. The inner cavity of the central tube, the fourth liquid passages, the annular cavity, the third liquid passages and the second liquid passages can be interconnected as the transmission component rotates, and fluid can be introduced to drive the impact component to rotate within the limited angle range while generating reciprocating impacts on the impactor.

[0005] Optionally, the outer wall of the transmission component may be provided with a plurality of first blocks, and the inner wall of the impact component may be provided with a plurality of second blocks. Each second block is located between two adjacent first blocks. The first blocks can be placed at the opening of the second liquid passage. The first blocks can drive the transmission component to rotate relative to the impact component under the drive of the fluid flowing through the first and second liquid passages, and when the transmission component rotates to the maximum angle, the second blocks abut against the first blocks on the other side.

[0006] Alternatively, a first driving surface is provided on the first stop block at the junction of the side of the first stop block facing the second stop block and the outer end face of the first stop block. The first driving surface can be placed at the opening of the second liquid passage hole, and the fluid flowing through the first liquid passage hole and the second liquid passage hole can act on the first driving surface to drive the transmission component to rotate.

[0007] Optionally, the inner wall of the bearing body may be provided with a plurality of impact grooves, and the outer wall of the impact member is provided with an impact part of the same number as the impact grooves. Each impact part is respectively housed in an impact groove. The impact part can drive the impact member to rotate under the drive of the fluid flowing through the inner cavity, the fourth liquid passage hole, the annular cavity, the third liquid passage hole and the second liquid passage hole of the central tube, and impact the side wall of the impact groove to generate an impact on the bearing body.

[0008] Alternatively, a second driving surface may be provided at the junction of the side wall of the impact groove and the inner wall between two adjacent impact grooves on the impact bearing body. The second driving surface can be placed at the opening of the second liquid passage hole, and the fluid flowing through the second liquid passage hole can act on the second driving surface to drive the impact member to rotate.

[0009] Alternatively, the impactor may also include a lower connector and an axial locking mechanism, the lower connector being fixedly connected to the housing via the axial locking mechanism.

[0010] Alternatively, the axial locking mechanism may include a plurality of locking slots, a plurality of locking members, and a telescopic assembly. The locking slots are formed on the outer wall of the lower connector and are arranged in parallel along the axial direction. The inner wall of the housing is provided with a groove. The telescopic assembly is installed in the groove. The locking members are installed on the telescopic assembly and correspond one-to-one with the locking slots. The locking members can extend into or out of the locking slots under the action of the telescopic assembly to lock or release the lower connector.

[0011] Alternatively, the telescopic assembly may include a plurality of first elastic elements, a base, a first magnetic body, and a second magnetic body. One end of the first elastic element is fixedly connected to the bottom of the groove, and the other end is fixedly connected to the base. The first magnetic body is installed at the bottom of the groove. The second magnetic body is installed on the base and is disposed opposite to the first magnetic body. The first magnetic body is magnetic, which causes the second magnetic body to drive the base and compress the first elastic element to move toward the bottom of the groove.

[0012] Alternatively, the locking member may include a second elastic member and a snap-fit ​​portion. One end of the second elastic member is fixedly connected to the base, and the other end is fixedly connected to the snap-fit ​​portion. The lower connector can compress the second elastic member through the lower end face of the snap-fit ​​portion to cause the locking member to shift upward, so as to snap the snap-fit ​​portion into the groove. The upper end face of the snap-fit ​​portion can abut against the side wall of the locking groove to axially lock the lower connector.

[0013] Another aspect of the present invention provides the application of the torsion impactor described above in drilling operations.

[0014] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0015] 1. In this invention, the symmetrically arranged impact parts, under the impact of drilling fluid and guided by each channel, achieve short-range reciprocating impact on the impactor body, thereby improving the impact efficiency of the torsion impactor.

[0016] 2. In this invention, the upper end face of the snap-fit ​​part is set as a plane, which can fit against the side wall of the groove of the lower connector. The lower end face is set at an inclination. When the lower connector is installed into the housing of the torque impactor, the side wall of the groove of the lower connector presses against the inclined surface of the lower end of the snap-fit ​​part. The snap-fit ​​part retracts under the expansion and contraction of the elastic element, so that the lower connector can be installed smoothly. After installation, the side wall of the groove of the lower connector is in close contact with the upper end face of the snap-fit ​​part. The lower connector cannot achieve the purpose of moving the lower connector by pressing the snap-fit ​​part to make the elastic element expand and contract. This improves the stability of the torque impactor. Attached Figure Description

[0017] The above and other objects and / or features of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 A cross-sectional view of a torsion impactor according to an exemplary embodiment 1 of the present invention is shown.

[0019] Figure 2 It shows Figure 1 Cross-sectional view of the first state at point AA.

[0020] Figure 3 It shows Figure 1 Cross-sectional view of the second state at point AA.

[0021] Figure 4 It shows Figure 1 Cross-sectional view of the third state at point AA.

[0022] Figure 5 It shows Figure 1 A cross-sectional view of the fourth state at point AA.

[0023] Figure 6 It shows Figure 1 Enlarged view of section I in the middle.

[0024] Figure 7 It shows Figure 6 Enlarged view of section II.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Outer shell, 11-Groove, 2-Impact body, 21-First liquid passage hole, 22-Impact groove, 221-Second driving surface, 3-Impact component, 31-Second liquid passage hole, 32-Impact part, 33-Second stop block, 4-Transmission component, 41-Third liquid passage hole, 42-First stop block, 421-First driving surface, 5-Central tube, 51-Fourth liquid passage hole, 6-Lower guide tube, 61-Fifth liquid passage hole, 7-Lower connector, 8-Axial locking mechanism, 81-Locking groove, 82-Locking component, 821-Second elastic component, 822-Snap-on part, 83-Telescopic assembly, 831-First elastic component, 832-Base, 833-First magnetic body, 834-Second magnetic body, 9-Upper guide tube, 91-Diverter hole. Detailed Implementation

[0027] In the following description, a torsional impactor of the present invention and its application will be explained in detail with reference to exemplary embodiments.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Torque impactors can solve the stick-slip problem encountered by PDC drill bits during drilling, helping to improve the drilling efficiency of PDC drill bits. The main principle is to convert the fluid energy of the drilling fluid into mechanical impact energy. The circumferential reciprocating torsional impact load generated by the torsion impactor allows the drill bit to cut the formation at a higher rotational speed and with greater torque, avoiding stick-slip vibration and lateral vortex phenomena induced by insufficient drill bit torque. However, existing torsion impactors still have structural shortcomings, resulting in low impact frequencies and poor stability.

[0032] Based on this, the present invention provides a torsion impactor and its application, wherein the torsion impactor includes a shell, an upper guide tube, a bearing body, an impact member, a transmission member, a central tube, and a lower guide tube. The central tube, transmission member, impact member, bearing body, and shell are sequentially sleeved from the inside out and fixed in relative axial and radial positions. The lower end of the upper guide tube is sleeved on the upper end of the central tube and passes through the shell. Several diversion holes are formed on the side wall of the upper guide tube. A cavity is formed between the inner wall of the shell and the outer wall of the upper guide tube. Several first liquid passage holes are formed on the side wall of the bearing body, and several... A second liquid passage is provided. The inner cavity of the upper guide tube, the diversion hole, the cavity, the first liquid passage, and the second liquid passage can be connected and fluid can be introduced to drive the transmission component to rotate within a limited angle range. Several third liquid passages are provided on the side wall of the transmission component. An annular cavity is formed between the inner wall of the transmission component and the outer wall of the central tube. Several fourth liquid passages are provided on the side wall of the central tube. The inner cavity of the central tube, the fourth liquid passages, the annular cavity, the third liquid passages, and the second liquid passages can be interconnected as the transmission component rotates, and fluid can be introduced to drive the impact component to rotate within a limited angle range while generating reciprocating impacts on the impactor.

[0033] In this invention, the symmetrically arranged impact parts, under the impact of drilling fluid and guided by various channels, achieve short-range reciprocating impact on the bearing body, improving the impact efficiency of the torsion impactor. The upper end face of the snap-fit ​​part is set as a plane, which can fit against the side wall of the groove of the lower connector. The lower end face is set at an inclination. When the lower connector is installed into the housing of the torsion impactor, the side wall of the groove of the lower connector presses against the inclined surface of the lower end of the snap-fit ​​part. The snap-fit ​​part retracts under the expansion and contraction of the elastic element, so that the lower connector can be installed smoothly. After installation, the side wall of the groove of the lower connector is tightly attached to the upper end face of the snap-fit ​​part. The lower connector cannot achieve the purpose of moving the lower connector by squeezing the snap-fit ​​part to make the elastic element expand and contract. This improves the stability of the torsion impactor.

[0034] Exemplary Example 1

[0035] This exemplary embodiment provides a torsional impactor.

[0036] Figure 1 A cross-sectional view of a torsion impactor according to exemplary embodiment 1 of the present invention is shown. Figure 2 It shows Figure 1 A cross-sectional view of the first state at point AA. Figure 3 It shows Figure 1 Cross-sectional view of the second state at point AA. Figure 4 It shows Figure 1 A cross-sectional view of the third state at point AA. Figure 5 It shows Figure 1 A cross-sectional view of the fourth state at point AA. Figure 6 It shows Figure 1 Enlarged view of section I in the middle. Figure 7 It shows Figure 6 Enlarged view of section II.

[0037] like Figures 1 to 7As shown in the exemplary embodiment, the torsion impactor includes a housing 1, a bearing body 2, an impact member 3, a transmission member 4, a central tube 5, a lower guide tube 6, a lower connector 7, an axial locking mechanism 8, and an upper guide tube 9. The housing 1, bearing body 2, impact member 3, transmission member 4, central tube 5, lower guide tube 6, lower connector 7, and upper guide tube 9 are all tubular structures with varying outer diameters. The central tube 5, transmission member 4, impact member 3, bearing body 2, and housing 1 are sequentially sleeved from the inside out and relatively fixed axially and radially. The lower guide tube 6 passes through the bearing body 2. The lower guide tube 6 is integrally formed with the lower end of the central tube 5 in the axial direction. The lower connector 7 passes through the lower end of the outer shell 1 and is fixedly connected to the outer shell 1 by the axial locking mechanism 8. The lower end of the upper guide tube 9 is threadedly fitted onto the upper end of the central tube 5 and passes through the outer shell 1. However, the present invention is not limited to this. The lower guide tube 6 and the central tube 5 can also be fixedly connected by welding, threaded connection or other methods. The lower connector 7 can also be fixedly connected to the outer shell 1 by threaded connection, bolt or screw or other methods. The upper guide tube 9 and the central tube 5 can also be fixedly connected by welding or other methods.

[0038] In this embodiment, four diversion holes 91 are provided on the side wall of the upper guide pipe 9, and a cavity is formed between the outer wall of the upper guide pipe 9 and the inner wall of the outer shell 1. Four first fluid passage holes 21 are also provided on the side wall of the receiving body 2. The first fluid passage holes 21 penetrate the inner and outer walls of the receiving body 2, and the four first fluid passage holes 21 are connected to the cavity. Drilling fluid can enter the cavity from the inner cavity of the upper guide pipe 9 and then enter the first fluid passage holes 21. However, the present invention is not limited to this. The number of diversion holes 91 and first fluid passage holes 21 can also be other positive integers other than 4, as long as the inner cavity of the upper guide pipe 9, the diversion holes 91, the cavity and the first fluid passage holes 21 can correspond one-to-one and be interconnected with each other.

[0039] In this embodiment, the sidewall of the impact member 3 is provided with eight second fluid passage holes 31. When the impact member 3 rotates to one end of its rotation stroke within the bearing body 2, two of the eight second fluid passage holes 31 that are radially opposite each other can be aligned with two first fluid passage holes 21. That is, in this state, the two second fluid passage holes 31 can be connected to the two first fluid passage holes 21 respectively, and drilling fluid can enter the second fluid passage holes 31 from the first fluid passage holes 21. When the impact member 3 rotates to the other end of its rotation stroke within the bearing body 2, the radially opposite two of the eight second fluid passage holes 31 can be aligned with the two first fluid passage holes 21. The other two second fluid passage holes 31 are aligned with the other two first fluid passage holes 21. That is, in this state, the other two second fluid passage holes 31 can be connected to the other two first fluid passage holes 21 respectively, and drilling fluid can enter the second fluid passage holes 31 from the first fluid passage holes 21. However, the present invention is not limited to this. The number of second fluid passage holes 31 can also be any positive integer other than 8, as long as the two radially opposite second fluid passage holes 31 can correspond one-to-one with the two radially opposite first fluid passage holes 21 and be connected to each other when the impact member 3 rotates to any end of the rotation stroke.

[0040] Furthermore, the outer wall of the transmission component 4 is integrally formed with four radially outward protruding first blocks 42, which are arranged radially opposite to each other in pairs. The inner wall of the impact component 3 is integrally formed with two radially inward protruding second blocks 33, which are arranged radially opposite to each other, and each of the two second blocks 33 is located between two adjacent first blocks 42. When the transmission component 4 rotates to either end of the rotation stroke within the impact component 3, it can respectively connect the side walls of the two radially opposite first blocks 42 with the two radially opposite second blocks 33. The side walls abut against each other, and the outer end faces of the two radially opposite first blocks 42 are respectively placed at the openings of the two radially opposite second liquid passage holes 31. That is to say, the rotation stroke of the transmission member 4 in the impact member 3 is limited to a certain angle range by the abutment between the first blocks 42 and the second blocks 33. However, the present invention is not limited to this. The number of first blocks 42 can also be other positive integers except 4, and the number of second blocks 33 can also be other positive integers except 2, as long as the radially opposite second blocks 33 can be placed between two adjacent first blocks 42.

[0041] Furthermore, a first driving surface 421 is provided on the first stop block 42. The first driving surface 421 is a plane and is located at the junction of the outer end face of the first stop block 42 and the side wall of the first stop block 42 facing the second stop block 33. The first driving surface 421 forms a 45-degree angle with the inner wall of the impact member 3. When the first stop block 42 is abutted against the second stop block 33, the first stop block 42 is simultaneously placed at the opening of the second fluid passage hole 31. At this time, the first fluid passage hole 21 and the second fluid passage hole 31 are connected, and drilling fluid can enter the first fluid passage hole 21 and the second fluid passage hole 31 to impact the first driving surface 421, thereby driving the transmission member 4 to rotate. However, the present invention is not limited to this. The shape of the first driving surface 421 can also be a curved surface, a concave-convex surface, or other shapes other than a plane. The angle between the first driving surface 421 and the inner wall of the impact member 3 can also be an acute angle less than 90 degrees other than 45 degrees and 0 degrees.

[0042] In this embodiment, four fourth fluid passage holes 51 are provided on the side wall of the central tube 5. An annular cavity is formed between the outer wall of the central tube 5 and the inner wall of the transmission member 4. Four third fluid passage holes 41 are provided on the side wall of the transmission member 4. All four fourth fluid passage holes 51 can be connected to the annular cavity. When the transmission member 4 rotates counterclockwise to one end of the rotation stroke, the annular cavity, the two radially opposite fourth fluid passage holes 51, and the two radially opposite second fluid passage holes 31 can be connected. That is, when the transmission member 4 rotates counterclockwise to one end of the rotation stroke, the drilling fluid can enter the fourth fluid passage hole 51 from the inner cavity of the central tube 5, and then enter the annular cavity, the third fluid passage hole 41, and the second fluid passage hole 31. However, the present invention is not limited to this. The number of fourth fluid passage holes 51 and third fluid passage holes 41 can also be any positive integer other than 4, as long as the fourth fluid passage holes 51 and third fluid passage holes 41 can be connected to each other when the transmission member 4 rotates to one end of the rotation stroke.

[0043] Furthermore, two radially opposing impact parts 32 are integrally formed on the outer wall of the impact member 3. The impact parts 32 are pendulums. Two radially opposing impact grooves 22 are formed on the inner wall of the bearing body 2. The two impact parts 32 are respectively accommodated in the two impact grooves 22. The impact parts 32 can swing within the impact grooves 22 as the impact member 3 rotates. Two second driving surfaces 221 are respectively formed at the junction of the side walls on both sides of each impact groove 22 and the inner wall of the bearing body 2 between the two impact grooves. The second driving surfaces 221 form an angle of 135 degrees with the side walls of the impact grooves 22. When the impact member 3 and the transmission member 4 rotate in the same direction to one end of the rotation stroke, the inner cavity of the central tube 5, the fourth liquid passage 51, the annular cavity, and the third liquid passage The liquid hole 41 and the second liquid passage hole 31 can be interconnected, and the second driving surface 221 can be placed at the opening of the second liquid passage hole 31. That is, the drilling fluid can impact the second driving surface 221 along the inner cavity of the central tube 5, the fourth liquid passage hole 51, the annular cavity, the third liquid passage hole 41 and the second liquid passage hole 31, pushing the impact part 32 to swing in the impact groove 22 and driving the impact member 3 to rotate. However, the present invention is not limited to this. The number of impact grooves 22 and impact parts 32 can also be other positive integers other than 2, as long as each impact part 32 and impact groove 22 can be matched one-to-one. The included angle between the second driving surface 221 and the side wall of the impact groove 22 can also be an obtuse angle greater than 90 degrees other than 135 degrees and 180 degrees.

[0044] In this embodiment, eight fifth fluid passage holes 61 are provided on the side wall of the lower guide pipe 6. The upper and lower ends of the eight fifth fluid passage holes 61 can be connected to the impact groove 22 and the inner cavity of the lower guide pipe 6, respectively. The inner cavity of the lower guide pipe 6 is connected to the inner cavity of the lower connector 7. That is to say, the fifth fluid passage holes 61 can be connected to the inner cavity of the lower guide pipe 6 and the inner cavity of the lower connector 7. Drilling fluid can enter the inner cavity of the lower guide pipe 6 along the impact groove 22 and the fifth fluid passage holes 61, and flow downward from the inner cavity of the lower connector 7 to the torque impactor. However, the present invention is not limited to this. The number of fifth fluid passage holes 61 can also be any positive integer other than 8, as long as the fifth fluid passage holes 61 and the impact groove 22 and the inner cavity of the lower guide pipe 6 can be interconnected.

[0045] In this embodiment, the lower end of the inner wall of the outer shell 1 is provided with a radially outward recessed groove 11. The axial locking mechanism 8 includes 8 locking grooves 81, 16 locking elements 82, and two sets of radially opposite telescopic components 83. The 8 locking grooves 81 are opened on the outer wall of the lower connector 7. The two sets of telescopic components 83 are respectively installed in the grooves 11. 8 of the 16 locking elements 82 are installed on one set of telescopic components 83, and the other 8 are installed on the other set of telescopic components 83. The 8 locking grooves are arranged in parallel along the axial direction of the lower connector 7. The 8 locking elements 82 installed on one set of telescopic components 83 are also arranged in parallel along the axial direction and correspond one-to-one with the 8 locking grooves. The two sets of telescopic components 83 can simultaneously push the locking elements 82 on both sides out of the grooves 11 and into the locking grooves to axially lock the lower connector 7 and the outer shell 1. However, the present invention is not limited to this. The number of locking grooves 81 and locking elements 82 can also be other numbers, as long as the locking elements 82 correspond one-to-one with the locking grooves 81.

[0046] Furthermore, any set of telescopic components 83 includes two first elastic elements 831, a base 832, a first magnetic body 833, and a second magnetic body 834. The first elastic elements 831 are springs. One end of each first elastic element 831 is fixedly connected to the bottom of the groove 11, and the other end is fixedly connected to the base 832. The first magnetic body 833 is fitted against the bottom of the groove 11, and the second magnetic body 834 is fitted against the base 832 and corresponds to the first magnetic body 833. The first magnetic body 833 is an electromagnet, and the second magnetic body 834 is a permanent magnet. When the first magnetic body 833 is energized, it becomes magnetic, attracting the second magnetic body 834. This causes the base 832 to compress the first elastic elements 831, causing the locking element 82 mounted on the base 832 to move towards the bottom of the groove 11. The first magnetic body 833 is moved to release the axial lock between the lower connector 7 and the outer shell 1. After the first magnetic body 833 is de-energized, the magnetic attraction between the first magnetic body 833 and the second magnetic body 834 is lost. The base 832 and the locking member 82 can move away from the bottom of the groove 11 under the rebound action of the first elastic member 831. The locking member 82 can be inserted into the locking groove 81 to achieve axial locking between the lower connector 7 and the outer shell 1. However, the present invention is not limited to this. The first elastic member 831 can also be other elastic structures besides springs. The number of the first elastic members 831 can also be other positive integers besides 2. At least one of the first magnetic bodies 833 and the second magnetic body 834 is an electromagnet, as long as it is possible to control whether the magnetic attraction function is generated between the first magnetic body 833 and the second magnetic body 834.

[0047] Furthermore, each locking element 82 includes a second elastic element 821 and a latching portion 822. The second elastic element 821 is a spring, and the latching portion 822 has a wedge-shaped structure with a horizontally plane upper end face and an inclined arc surface lower end face. The two ends of the second elastic element 821 are fixedly connected to the base 832 and the latching portion 822, respectively. When installing the lower connector 7, the sidewall of the locking groove 81 can be pressed against the lower end face of the latching portion 822 to apply an upward axial force to the latching portion 822, thereby compressing the second elastic element 821 and deflecting it upward, causing the latching portion 822 to... 2. Insert the lower connector 7 into the corresponding locking groove 81, thereby installing the lower connector 7 into place. After locking, the side wall of the locking groove 81 can abut against the upper end face of the latching part 822. At this time, the second elastic member 821 remains fixed, thereby realizing the axial locking between the lower connector 7 and the outer shell 1. However, the present invention is not limited to this. The second elastic member 821 can also be other elastic structures besides springs. The shape of the latching part 822 is not limited to a wedge structure. As long as the second elastic member 821 can be compressed from bottom to top to insert into the locking groove 81, and the upper end abuts against the side wall of the locking groove 81 to realize the axial locking function, it is acceptable.

[0048] The working process of the torsion impactor described in this embodiment is described in detail below:

[0049] like Figure 1 and Figure 2 As shown, drilling fluid enters the first fluid passage hole 21 and the second fluid passage hole 31 through the inner cavity of the upper guide pipe 9, the diversion hole 91, and the cavity between the outer wall of the upper guide pipe 9 and the inner wall of the outer shell, impacting the first driving surface, pushing the first stop block 42, and driving the transmission component 4 to rotate counterclockwise, as shown. Figure 3 As shown, the second stop block abuts against the adjacent first stop block. At this time, the inner cavity of the central tube, the fourth fluid passage hole, the annular cavity, the third fluid passage hole, and the second fluid passage hole are connected. The drilling fluid can impact the second driving surface 221 along the inner cavity of the central tube, the fourth fluid passage hole, the annular cavity, the third fluid passage hole, and the second fluid passage hole, thereby pushing the impact part to swing in the impact groove and driving the impact member 3 and the transmission member 4 to rotate clockwise synchronously. Figure 4 As shown, when the impact part swings to the other end of the impact groove, it generates the first impact on the impactor. At this time, another set of radially opposite first and second fluid passages are connected. Drilling fluid enters the first and second fluid passages and impacts the first driving surface on the other set of radially opposite first stops, pushing the first stops and causing the transmission components to rotate clockwise, as shown. Figure 5As shown in the diagram, at this time, the inner cavity and annular cavity of the central tube are connected to another set of radially opposite fourth, third, and second fluid passages. The drilling fluid can impact the second driving surface on the second set of radially opposite second blocks along the inner cavity, fourth fluid passage, annular cavity, third fluid passage, and second fluid passage of the central tube, thereby pushing the impact part to swing in the impact groove and driving the impact member 3 and transmission member 4 to rotate counterclockwise synchronously. When the impact part swings to the other end of the impact groove, it generates a second impact on the impact bearing body and returns to the original position. Figure 1 As shown, after completing one reciprocating impact motion, the process will continue to repeat. After the drilling fluid enters the impact tank, it flows through the fifth fluid passage into the inner cavity of the lower guide pipe and then flows downwards from the inner cavity of the lower connector of the torsion impactor. In one reciprocating impact motion, the impact part can perform a short-range motion to reciprocate twice against the impactor body. Furthermore, two sets of radially opposing impact parts are provided, increasing the impact frequency of the torsion impactor.

[0050] Exemplary Example 2

[0051] This exemplary embodiment provides the application of a torsion impactor in drilling operations as described in Exemplary Embodiment 1.

[0052] like Figure 1 and Figure 2 As shown, drilling fluid enters the first fluid passage hole 21 and the second fluid passage hole 31 through the inner cavity of the upper guide pipe 9, the diversion hole 91, and the cavity between the outer wall of the upper guide pipe 9 and the inner wall of the outer shell, impacting the first driving surface, pushing the first stop block 42, and driving the transmission component 4 to rotate counterclockwise, as shown. Figure 3 As shown, the second stop block abuts against the adjacent first stop block. At this time, the inner cavity of the central tube, the fourth fluid passage hole, the annular cavity, the third fluid passage hole, and the second fluid passage hole are connected. The drilling fluid can impact the second driving surface 221 along the inner cavity of the central tube, the fourth fluid passage hole, the annular cavity, the third fluid passage hole, and the second fluid passage hole, thereby pushing the impact part to swing in the impact groove and driving the impact member 3 and the transmission member 4 to rotate clockwise synchronously. Figure 4 As shown, when the impact part swings to the other end of the impact groove, it generates the first impact on the impactor. At this time, another set of radially opposite first and second fluid passages are connected. Drilling fluid enters the first and second fluid passages and impacts the first driving surface on the other set of radially opposite first stops, pushing the first stops and causing the transmission components to rotate clockwise, as shown. Figure 5As shown in the diagram, at this time, the inner cavity and annular cavity of the central tube are connected to another set of radially opposite fourth, third, and second fluid passages. The drilling fluid can impact the second driving surface on the second set of radially opposite second blocks along the inner cavity, fourth fluid passage, annular cavity, third fluid passage, and second fluid passage of the central tube, thereby pushing the impact part to swing in the impact groove and driving the impact member 3 and transmission member 4 to rotate counterclockwise synchronously. When the impact part swings to the other end of the impact groove, it generates a second impact on the impact bearing body and returns to the original position. Figure 1 As shown, after completing one reciprocating impact motion, the process will continue to repeat. After the drilling fluid enters the impact tank, it flows through the fifth fluid passage into the inner cavity of the lower guide pipe and then flows downwards from the inner cavity of the lower connector of the torsion impactor. In one reciprocating impact motion, the impact part can perform a short-range motion to reciprocate twice against the impactor body. Furthermore, two sets of radially opposing impact parts are provided, increasing the impact frequency of the torsion impactor.

[0053] In summary, the symmetrically arranged impact parts in this invention, under the impact of drilling fluid and guided by various channels, achieve short-range reciprocating impact on the bearing body, improving the impact efficiency of the torsion impactor. The upper end face of the snap-fit ​​part is set as a plane, which can fit against the side wall of the groove of the lower connector. The lower end face is set at an inclination. When the lower connector is installed into the housing of the torsion impactor, the side wall of the groove of the lower connector presses against the inclined surface of the lower end of the snap-fit ​​part. The snap-fit ​​part retracts under the expansion and contraction of the elastic element, so that the lower connector can be installed smoothly. After installation, the side wall of the groove of the lower connector is tightly attached to the upper end face of the snap-fit ​​part. The lower connector cannot achieve the purpose of moving the lower connector by squeezing the snap-fit ​​part to make the elastic element expand and contract. This improves the stability of the torsion impactor.

[0054] Although the present invention has been described above in conjunction with exemplary embodiments and accompanying drawings, those skilled in the art should understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A torsion impactor, characterized in that, The impactor includes a shell, an upper guide tube, a bearing body, an impact component, a transmission component, and a central tube, wherein, The central tube, transmission component, impact component, impactor, and outer shell are sequentially sleeved from the inside out and fixed in relative axial and radial positions. The lower end of the upper guide tube is sleeved on the upper end of the central tube and passes through the outer shell. Several diversion holes are opened on the side wall of the upper guide tube. A cavity is formed between the inner wall of the outer shell and the outer wall of the upper guide tube. Several first liquid passage holes are opened on the side wall of the impactor, and several second liquid passage holes are opened on the side wall of the impact component. The inner cavity, diversion holes, cavity, first liquid passage holes and second liquid passage holes of the upper guide tube can be connected and fluid can be introduced to drive the transmission component to rotate within a limited angle range. Several third liquid passage holes are provided on the side wall of the transmission component. An annular cavity is formed between the inner wall of the transmission component and the outer wall of the central tube. Several fourth liquid passage holes are provided on the side wall of the central tube. The inner cavity of the central tube, the fourth liquid passage holes, the annular cavity, the third liquid passage holes and the second liquid passage holes can be interconnected as the transmission component rotates, and fluid can be introduced to drive the impact component to rotate within the limited angle range while generating reciprocating impacts on the impactor. The outer wall of the transmission component is provided with a plurality of first blocks, and the inner wall of the impact component is provided with a plurality of second blocks. Each second block is located between two adjacent first blocks. The first blocks can be placed at the opening of the second liquid passage. The first blocks can drive the transmission component to rotate relative to the impact component under the drive of the fluid flowing through the first and second liquid passages, and when the transmission component rotates to the maximum angle, the second blocks abut against the first blocks on the other side. A first driving surface is provided at the junction of the side of the first stop block facing the second stop block and the outer end face of the first stop block. The first driving surface can be placed at the opening of the second liquid passage hole. The fluid flowing through the first liquid passage hole and the second liquid passage hole can act on the first driving surface to drive the transmission component to rotate. The impactor also includes a lower connector and an axial locking mechanism. The lower connector is fixedly connected to the outer shell through the axial locking mechanism. The axial locking mechanism includes several locking grooves, several locking elements, and a telescopic assembly. The locking grooves are formed on the outer wall of the lower connector and are arranged in parallel along the axial direction. The inner wall of the outer shell is provided with a groove. The telescopic assembly is installed in the groove. The locking elements are installed on the telescopic assembly and correspond one-to-one with the locking grooves. The locking elements can extend into or out of the locking groove under the action of the telescopic assembly to lock or release the lower connector.

2. The torsion impactor according to claim 1, characterized in that, The inner wall of the bearing body is provided with a number of impact grooves, and the outer wall of the impact member is provided with an impact part of the same number as the impact grooves. Each impact part is respectively housed in an impact groove. The impact part can drive the impact member to rotate under the drive of the fluid flowing through the inner cavity, fourth liquid passage hole, annular cavity, third liquid passage hole and second liquid passage hole of the central tube, and impact the side wall of the impact groove to generate an impact on the bearing body.

3. The torsion impactor according to claim 2, characterized in that, A second driving surface is provided at the junction of the side wall of the impact groove and the inner wall between two adjacent impact grooves on the impact bearing body. The second driving surface can be placed at the opening of the second liquid passage hole, and the fluid flowing through the second liquid passage hole can act on the second driving surface to drive the impact member to rotate.

4. The torsion impactor according to claim 1, characterized in that, The telescopic assembly includes several first elastic elements, a base, a first magnetic body, and a second magnetic body. One end of the first elastic element is fixedly connected to the bottom of the groove, and the other end is fixedly connected to the base. The first magnetic body is installed at the bottom of the groove. The second magnetic body is installed on the base and is positioned opposite to the first magnetic body. The first magnetic body is magnetic, which causes the second magnetic body to drive the base and compress the first elastic element to move towards the bottom of the groove.

5. The torsion impactor according to claim 4, characterized in that, The locking member includes a second elastic member and a snap-fit ​​part. One end of the second elastic member is fixedly connected to the base, and the other end is fixedly connected to the snap-fit ​​part. The lower connector can compress the second elastic member through the lower end face of the snap-fit ​​part to make the locking member shift upward, so as to snap the snap-fit ​​part into the groove. The upper end face of the snap-fit ​​part can abut against the side wall of the locking groove to lock the lower connector axially.

6. The application of the torsion impactor according to any one of claims 1 to 5 in drilling operations.

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