A multi-dimensional composite impactor for drilling a well

Abstract

The present application relates to a kind of multi-dimensional composite impactors for drilling, comprising: transmission stub; Tool housing, lower end is fixedly connected with transmission stub, tool housing has flow passage in it;Torsional impact component, it is located in the lower part of tool housing and includes pressure disc, center shaft fixed plate, hammer housing, center shaft, impeller, valve plate and hydraulic hammer;Axial impact component, it is located in the upper part of tool housing and is fixedly connected with torsional impact component by pressure disc, axial impact component includes shunt, nozzle, nozzle seat, hammer outer sleeve, valve sleeve, piston and impact hammer. By the multi-dimensional composite impactor of the present application, the rate of penetration of deep well ultra-deep well can be improved and the damage of stick-slip vibration to the drill string system can be reduced, the multi-dimensional composite impactor of the present application drives the movement of parts using drilling fluid, generates impact force in axial and torsional directions, thereby applying high-frequency axial-torsional coupled impact to the drill bit, improving rock breaking efficiency of the drill bit under impact load.

Description

Technical Field

[0001] This invention relates to a deep well rock-breaking and speed-up tool, and more specifically, to a drilling fluid-driven multidimensional composite impactor for drilling. Background Technology

[0002] As oil and gas exploration and development in my country shifts towards deeper formations, drilling faces challenges such as complex geological conditions, high formation hardness, high drilling difficulty, low mechanical drilling rate, and strong stick-slip vibration. Improving the mechanical drilling rate in deep wells is key to reducing drilling costs. Rotary percussion drilling technology is a highly efficient drilling speed-up technology. This technology adds an impact tool to conventional rotary drilling to achieve rotary percussion drilling. With the development of high-efficiency drilling technology, rotary percussion drilling technology is no longer limited to axial impact, but applies axial-torsional coupling energy to the drill bit through multi-dimensional composite impact, thereby improving rock-breaking efficiency and reducing drill string stick-slip vibration. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a multi-dimensional composite impactor that can solve the problems of low drilling efficiency, strong stick-slip vibration, and poor drilling pressure application in deep hard formations.

[0004] The method adopted by this invention to solve the above-mentioned technical problems is as follows: This multi-dimensional composite impactor mainly consists of two parts, namely an axial impact component and a torsional impact component. The axial impact component uses a jet-suction drive principle, while the torsional impact component uses a turbine drive principle. Both are arranged in the tool housing and connected by threads. The axial impact component mainly consists of a flow divider, a nozzle seat, a nozzle, a hammer sleeve, a valve sleeve, a piston, and a hammer. The torsional impact component mainly consists of a pressure plate, a central shaft fixing plate, a hammer housing, a central shaft, an impeller, a valve plate, and a hydraulic hammer. Furthermore, the lower part of the torsional impact component is connected to the transmission short-circuit threaded connection.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] According to an aspect of the present invention, a multi-dimensional composite impactor for drilling is provided, comprising:

[0007] Drive short circuit;

[0008] The tool housing has its lower end fixedly connected to the transmission short circuit, and the tool housing has a flow channel inside;

[0009] A torsional impact component is located in the lower part of a tool housing and includes a pressure plate, a central shaft fixing plate, a hammer housing, a central shaft, an impeller, a valve plate, and a hydraulic hammer. The outer wall of the hammer housing is fixedly connected to the inner wall of the tool housing and extends along the inner wall. The upper end of the inner side of the hammer housing has a first step structure, the middle part has a second step structure, and the lower end has a third step structure. Both ends of the central shaft fixing plate are fixedly connected to the first step structure, and a hole is provided in the middle of the central shaft fixing plate. Both sides of the pressure plate are fixedly connected to the hammer housing and located above the central shaft fixing plate, capable of pressing the central shaft fixing plate. The central shaft has a first part, a second part, and a third part connected in sequence. The first part and the second part are fixed by inserting the upper end of the first part into the hole in the middle of the central shaft fixing plate. The connection part between the first part and the second part is located in the middle of the hammer shell. Valve plates are connected to both sides of the connection part. One side of the valve plate is fixedly connected to the side of the connection part and the other side is fixed to the second step structure in the middle of the hammer shell. The lower end of the third part of the central shaft is fixed by inserting into the hole at the bottom of the hammer shell. Protrusions are provided on both sides of the third part. The impeller is fixed on the first part of the central shaft. A hydraulic hammer is installed between the valve plate, the hammer shell, the protrusions and the second part of the central shaft. Flow channels are provided on both the valve plate and the hydraulic hammer. The third step structure at the lower end of the hammer shell is fixedly connected to the transmission short circuit.

[0010] An axial impact component is located inside the upper part of the tool housing and is fixedly connected to a torsional impact component via a pressure plate. The axial impact component includes a flow divider, a nozzle, a nozzle seat, a hammer sleeve, a valve sleeve, a piston, and a hammer. The nozzle seat is fixedly connected to the inner wall of the tool housing on both sides. The flow divider is fixedly connected above the center of the nozzle seat. The nozzle is located below the flow divider and inside the center of the nozzle seat. The hammer sleeve is fixedly connected to the inner wall of the tool housing, and its upper end abuts against the bottom end of the nozzle seat. The sleeve extends downward along the inner wall of the tool housing until it is fixedly connected to the lower end of the hammer sleeve and the pressure plate. A first protrusion is provided on the inner wall of the hammer sleeve. A valve sleeve, a piston, and a punch are provided inside the hammer sleeve. The valve sleeve is limited by the first protrusion on the inner wall of the hammer sleeve. A chamber is formed between the valve sleeve and the nozzle seat. The lower part of the valve sleeve cooperates with the piston. The piston is fixedly connected to the punch. Both the piston and the punch are provided with flow channels. The lower end of the punch is fixed to the bottom of the hammer sleeve. The bottom of the hammer sleeve communicates with the middle of the pressure plate and the upper end of the central shaft fixing plate.

[0011] In one embodiment of the present invention, the drilling multidimensional composite impactor further includes:

[0012] Wear-resistant rings are installed on valve sleeves, pistons, and hammers.

[0013] In one embodiment of the invention, the lower end of the tool housing is connected to the drive shorting thread.

[0014] In one embodiment of the present invention, the upper part of the diverter is conical and has a rectangular hole on the outside.

[0015] In one embodiment of the invention, the nozzle seat is fixed to the hammer housing bolt via a bolt hole.

[0016] In one embodiment of the present invention, the hammer jacket is a barrel-shaped structure, the upper part of the hammer jacket is a hexagonal structure, and the lower inner diameter of the hammer jacket is larger than the upper inner diameter.

[0017] In one embodiment of the present invention, the interior of the valve sleeve is generally cylindrical with a gradually decreasing radius at the bottom to cooperate with the piston, and the exterior of the valve sleeve is generally hexagonal to cooperate with the upper hexagonal knot of the hammer sleeve.

[0018] In one embodiment of the present invention, the piston and the hammer are threaded together to form an integral structure, and the lower parts of the piston and the hammer are respectively provided with rectangular holes to form flow channels.

[0019] In one embodiment of the present invention, the upper part of the piston includes a reduced diameter section, which cooperates with the valve sleeve.

[0020] In one embodiment of the present invention, the hammer is streamlined in shape, and a second protrusion is provided at the lower part of the hammer. The second protrusion abuts against the inner wall of the hammer jacket to limit the circumferential displacement of the hammer.

[0021] In one embodiment of the present invention, the pressure plate is threadedly connected to both the hammer outer sleeve and the hammer outer shell.

[0022] In one embodiment of the present invention, the upper part of the hammer shell is a hollow cylinder and the lower part is a hollow fan-shaped structure.

[0023] In one embodiment of the present invention, the central shaft fixing plate is pressed tightly by the pressure plate and the hammer shell thread, and the upper part of the central shaft fixing plate has a tapered structure.

[0024] In one embodiment of the present invention, the impeller has a streamlined structure.

[0025] In one embodiment of the invention, the valve plate is threadedly connected to the connecting part and rotates together with the central axis.

[0026] In one embodiment of the present invention, the hydraulic hammer is a symmetrical sector-shaped column structure to cooperate with the sector-shaped structure of the hammer shell.

[0027] In one embodiment of the invention, the two ends of the hammer sleeve are fixedly connected to the tool housing, and the portion of the hammer sleeve between the two ends has a gap with the inner wall of the tool housing.

[0028] In one embodiment of the present invention, the outer wall of the hammer housing is tightly fixed to the inner wall of the tool housing.

[0029] In one embodiment of the present invention, the diameters of the first part, the second part, and the third part decrease sequentially.

[0030] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0031] This invention aims to provide a multi-dimensional composite impactor to improve the mechanical drilling rate of deep and ultra-deep wells and reduce the damage of stick-slip vibration to the drill string system. This multi-dimensional composite impactor utilizes drilling fluid to drive the movement of components, generating impact forces in both axial and torsional directions, thereby applying high-frequency axial-torsional coupling impact to the drill bit, improving the rock-breaking efficiency of the drill bit under impact load. Attached Figure Description

[0032] Figure 1 A cross-sectional view of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0033] Figure 2 A cross-sectional view of the valve sleeve of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0034] Figure 3 An embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure;

[0035] Figure 4 A cross-sectional view of the piston of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown;

[0036] Figure 5 A cross-sectional view of the hammer structure of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0037] Figure 6 This invention provides a schematic diagram of the structure of the central shaft fixing plate of a multi-dimensional composite impactor for drilling provided in an embodiment of the invention.

[0038] Figure 7 A schematic diagram of the central shaft of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0039] Figure 8 A schematic diagram of the valve plate of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0040] Figure 9 A cross-sectional view of the hammer housing of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0041] Figure 10A schematic diagram of the hydraulic hammer structure of the drilling multidimensional composite impactor provided in an embodiment of the present invention is shown.

[0042] List of reference numerals

[0043] 1 Tool housing, 2 Transmission short circuit, 3 Diverter pipe, 4 Nozzle seat, 5 Nozzle, 6 Hammer outer sleeve, 61 First boss, 7 Valve sleeve, 8 Piston, 9 Punch hammer, 91 Second boss, 10 Wear ring, 11 Pressure plate, 12 Central shaft fixing plate, 13 Impeller, 14 Hammer housing, 141 First step structure, 142 Second step structure, 143 Third step structure, 15 Central shaft, 151 First part, 152 Second part, 153 Third part, 154 Connection part, 16 Valve plate, 17 Hydraulic hammer, 18 Chamber, 19 Protrusion, 20 Torsional impact component, 21 Axial impact component. Detailed Implementation

[0044] It should be understood that the embodiments of the invention shown in the exemplary embodiments are merely illustrative. Although only a few embodiments have been described in detail in this invention, those skilled in the art will readily recognize that various modifications are possible without substantially departing from the teachings of the invention. Accordingly, all such modifications should be included within the scope of the invention. Other substitutions, modifications, variations, and deletions can be made to the design, operating conditions, and parameters of the following exemplary embodiments without departing from the spirit of the invention.

[0045] like Figure 1-10 As shown, a multi-dimensional composite impactor for drilling includes:

[0046] Transmission short-circuit 2;

[0047] Tool housing 1, the lower end of which is fixedly connected to transmission short circuit 2, and the tool housing has a flow channel inside;

[0048] A torsional impact component 20 is located in the lower part of the tool housing 1 and includes a pressure plate 11, a central shaft fixing plate 12, a hammer housing 14, a central shaft 15, an impeller 13, a valve plate 16, and a hydraulic hammer 17. The outer wall of the hammer housing 14 is fixedly connected to the inner wall of the tool housing 1 and extends along the inner wall of the tool housing 1. The upper end of the inner side of the hammer housing 14 is provided with a first step structure 141, the middle part with a second step structure 142, and the lower end with a third step structure 143. The two ends of the central shaft fixing plate 12 are fixedly connected to the first step structure 141, and the middle part of the central shaft fixing plate 12 is provided with a hole. The two sides of the pressure plate 11 are fixedly connected to the hammer housing 14 and are located at the upper end of the central shaft fixing plate 12, and can press the central shaft fixing plate 12. The central shaft 15 has a first part 151, a second part 152, and a third part 153 connected in sequence. 3. The upper end of the first part 151 is inserted into the hole in the middle of the central shaft fixing plate 12 and fixed. The connection part 154 between the first part 151 and the second part 152 is located in the middle of the hammer shell 14. The valve plate 16 is connected to both sides of the connection part 154 respectively. One side of the valve plate 16 is fixedly connected to the side of the connection part 154 and the other side is fixed to the second step structure 142 in the middle of the hammer shell 14. The lower end of the third part 153 of the central shaft 15 is inserted into the hole at the bottom of the hammer shell 14 and fixed. The protrusions 19 are provided on both sides of the third part 153. The impeller 13 is fixed on the first part 151 of the central shaft 15. The hydraulic hammer 17 is installed between the valve plate 16, the hammer shell 14, the protrusions 19 and the second part 152 of the central shaft 15. The valve plate 16 and the hydraulic hammer 17 are both provided with flow channels. The third step structure 143 at the lower end of the hammer shell 14 is fixedly connected to the transmission short circuit 2.

[0049] An axial impact component 21 is located inside the upper part of the tool housing 1 and is fixedly connected to the torsional impact component 20 via a pressure plate 11. The axial impact component 21 includes a flow divider 3, a nozzle 5, a nozzle seat 4, a hammer sleeve 6, a valve sleeve 7, a piston 8, and a hammer 9. The two sides of the nozzle seat 4 are fixedly connected to the inner wall of the tool housing 1. The flow divider 3 is fixedly connected above the middle part of the nozzle seat 4. The nozzle 5 is located below the flow divider 3 and is disposed inside the middle part of the nozzle seat 4. The hammer sleeve 6 is fixedly connected to the inner wall of the tool housing 1, and the upper end of the hammer sleeve 6 abuts against the bottom end of the nozzle seat 4. Extending downwards along the inner wall of the tool housing 1 until the lower end of the hammer sleeve 6 is fixedly connected to the pressure plate 11, the inner wall of the hammer sleeve 6 is provided with a first protrusion 61, the inside of the hammer sleeve 6 is provided with a valve sleeve 7, a piston 8 and a punch 9, the valve sleeve 7 is limited by the first protrusion 61 on the inner wall of the hammer sleeve 6, a chamber 18 is formed between the valve sleeve 7 and the nozzle seat 4, the lower part of the valve sleeve 7 cooperates with the piston 8, the piston 8 is fixedly connected to the punch 9, both the piston 8 and the punch 9 are provided with flow channels, the lower end of the punch 9 is fixed to the bottom of the hammer sleeve 6, the bottom of the hammer sleeve 6 communicates with the middle part of the pressure plate 11 and the upper end of the central shaft fixing plate 12.

[0050] Through the above-described technical solution of this invention, the present invention can solve the problems of low drilling efficiency, strong stick-slip vibration, and poor drilling pressure application in deep hard formations. The multi-dimensional composite impactor provided by this invention can improve the mechanical drilling rate of deep and ultra-deep wells and reduce the damage of stick-slip vibration to the drill string system. This multi-dimensional composite impactor utilizes drilling fluid to drive the movement of components, generating impact forces in both axial and torsional directions, thereby applying high-frequency axial-torsional coupling impact to the drill bit, improving the rock-breaking efficiency of the drill bit under impact load.

[0051] In the aforementioned multi-dimensional composite impactor for drilling, in order to reduce the wear of components, such as... Figure 1 As shown, the multidimensional composite impactor also includes a wear-resistant ring 10, which can be disposed on the valve sleeve 7, piston 8 and impact hammer 9.

[0052] In the above-mentioned multidimensional composite impactor for drilling, in order to make the component connection more secure, the lower end of the tool housing 1 is threadedly connected to the transmission short circuit 2.

[0053] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, in order to introduce drilling fluid into the nozzle 5, the upper part of the diversion pipe 3 is conical and has a rectangular hole on the outside.

[0054] In the above-mentioned multi-dimensional composite impactor for drilling, in order to make the component connection more secure, the nozzle seat 4 is fixed to the hammer sleeve 6 by bolts through bolt holes.

[0055] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1As shown, the hammer sleeve 6 has a barrel-shaped structure. The upper part of the hammer sleeve 6 is a hexagonal structure for housing the valve sleeve 7. The lower inner diameter of the hammer sleeve 6 is larger than the upper inner diameter for housing the piston 8 and the hammer 9.

[0056] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1-3 As shown, the internal structure of the valve sleeve 7 is cylindrical, and the radius of the lower part gradually decreases to cooperate with the piston 8, thereby limiting the axial displacement of the piston 8 and the hammer 9; the external structure of the valve sleeve 7 is hexagonal to cooperate with the upper hexagonal structure of the hammer sleeve 6 to limit the circumferential displacement.

[0057] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, piston 8 and hammer 9 are threaded together to form an integral structure, and the lower parts of piston 8 and hammer 9 are respectively provided with rectangular holes to form flow channels.

[0058] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 and 4 As shown, the upper part of the piston 8 includes a reduced diameter section, which cooperates with the valve sleeve to limit the axial displacement of the piston 8.

[0059] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 and 5 As shown, the punch 9 is streamlined in shape. A second protrusion 91 is provided at the lower part of the punch 9. The second protrusion 91 abuts against the inner wall of the hammer sleeve 6 to limit the circumferential displacement of the punch 9 and reduce the overall friction of the punch 9 moving in the hammer sleeve 6.

[0060] In the above-mentioned multidimensional composite impactor for drilling, the pressure plate 11 is threadedly connected to the hammer outer sleeve 6 and the hammer outer shell 14.

[0061] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, the upper part of the hammer housing 14 is a hollow cylinder to accommodate the central shaft fixing plate 12 and the impeller 13, and the lower part is a hollow fan-shaped structure to accommodate the hydraulic hammer 17.

[0062] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 and 6 As shown, the central shaft fixing plate 12 is pressed tightly by the pressure plate 11 and the hammer housing 14 by threads. The upper part of the central shaft fixing plate 12 has a conical structure to divert drilling fluid to the impeller 13.

[0063] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, the impeller 13 has a streamlined structure and rotates due to the jet thrust generated by the drilling fluid.

[0064] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, the valve plate 16 is threadedly connected to the connection part 154 and rotates together with the central shaft 15.

[0065] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 and 10 As shown, the hydraulic hammer 17 has a symmetrical sector-shaped column structure to match the sector-shaped structure of the hammer housing 14.

[0066] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, the two ends of the hammer sleeve 6 are fixedly connected to the tool housing, and there is a gap between the portion of the hammer sleeve between the two ends and the inner wall of the tool housing.

[0067] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 As shown, the outer wall of the hammer housing 14 is tightly fixed to the inner wall of the tool housing.

[0068] In the aforementioned multidimensional composite impactors for drilling, such as Figure 1 and 7 As shown, the diameters of the first part 151, the second part 152, and the third part 153 decrease sequentially.

[0069] The impactor described in this application will be described in detail below through specific embodiments.

[0070] like Figure 1-10 As shown, the multidimensional composite impactor mainly includes a tool housing 1, a transmission short circuit 2, an axial impact component 21, and a torsional impact component 20. The axial impact component 21 includes a flow divider 3, a nozzle seat 4, a nozzle 5, a hammer sleeve 6, a valve sleeve 7, a piston 8, and a hammer 9. The torsional impact component 20 includes a pressure plate 11, a central shaft fixing plate 12, an impeller 13, a hammer housing 14, a central shaft 15, a valve plate 16, and a hydraulic hammer 17.

[0071] The axial impact component 21 and the torsional impact component 20 of the multidimensional composite impactor of the present invention are threadedly connected by the pressure plate 11 and placed inside the tool housing 1. The torsional impact component 20 is connected to the transmission short circuit 2 by the thread, and the transmission short circuit 2 is threadedly fixed to the tool housing 1.

[0072] In the axial impact component 21, the upper part of the diversion pipe 3 is conical, with a rectangular hole on the outside for introducing drilling fluid into the nozzle 5; the nozzle 5 is placed in the nozzle seat 4 and is threadedly pressed between the nozzle seat 4 and the diversion pipe 3; the nozzle seat 4 has four bolt holes for bolt fixing to the hammer sleeve 6; the hammer sleeve 6 has a barrel-like structure with a hexagonal upper part for housing the valve sleeve 7 and a larger lower inner diameter for housing the piston 8 and the hammer 9; the valve sleeve 7 restricts axial displacement through the first boss 61 on the hammer sleeve 6, and the valve sleeve 7 has a barrel-like internal structure with a gradually decreasing lower radius to cooperate with the piston 8 and restrict axial displacement. The axial displacement of piston 8 and hammer 9; the outer surface of valve sleeve 7 is hexagonal to cooperate with the hexagonal structure of hammer sleeve 6 to limit circumferential displacement; piston 8 and hammer 9 are connected by threads and form a whole, and both have rectangular holes at the bottom to form flow channels; there is a reduced diameter section at the top of piston 8, which cooperates with valve sleeve 7 to limit axial displacement; hammer 9 is streamlined in shape, and a second boss 91 is provided at the bottom to limit the circumferential dimension of hammer 9 and reduce the overall friction of hammer 9 moving in hammer sleeve 6; wear-resistant rings 10 are provided for valve sleeve 7, piston 8 and hammer 9 to reduce wear of parts.

[0073] The pressure plate 11 is threadedly connected to the hammer outer sleeve 6 and the hammer outer shell 14 to fix the axial impact component 21 and the torsional impact component 20 together. In the torsional impact component 20, the upper part of the hammer housing 14 is a hollow cylinder to accommodate the central shaft fixing plate 12 and the impeller 13, and the lower part is a hollow fan-shaped structure to accommodate the hydraulic hammer 17. The central shaft fixing plate 12 is pressed tightly by the pressure plate 11 and the hammer housing 14 by threads, and the upper part of the central shaft fixing plate 12 is a conical structure to divert drilling fluid to the impeller 13. The impeller blades 13 have a streamlined structure and are located on the first part 151 of the central shaft 15, which is rotated by the jet thrust generated by the drilling fluid. The valve plate 16 is sleeved at the connection 154 between the first part 151 and the second part 152 of the central shaft 15 and is threadedly connected to the central shaft 15 so that the two rotate together. The lower part of the third part 153 of the central shaft 15 is inserted into the cylindrical hole at the rear end of the hammer housing 14 to limit the axial displacement of the central shaft 15. The hydraulic hammer 17 is a symmetrical fan-shaped cylindrical structure to cooperate with the fan-shaped groove of the hammer housing 14 to limit the circumferential displacement.

[0074] When the aforementioned multi-dimensional composite impactor is in use, the flow channel opens when the valve sleeve 7, piston 8, and impact hammer 9 are at the bottom dead center. Drilling fluid flows into the tool housing 1 from the upper part, and the pressure loss and erosion of the nozzle seat 4 are reduced by the diversion effect of the diverter pipe 3. It continues to generate a high-speed jet in the chamber 18 of the axial impact section through the nozzle 5, thereby reducing the pressure in the chamber 18 and causing the valve sleeve 7, piston 8, and impact hammer 9, which are at the bottom dead center, to complete the return stroke. After the return stroke is completed, the valve sleeve 7 and impact hammer 9 close the flow channel, and the drilling fluid generates water hammer in the chamber 18. The pressure in the chamber 18 rises sharply, and the valve sleeve 7, piston 8, and impact hammer 9 move downward to complete the axial impact.

[0075] Then, the drilling fluid continues to flow downwards, driving the central shaft 15 to rotate via the central shaft fixing plate 12 and impeller 13, and driving the valve plate 16 to rotate, thereby cooperating with the hydraulic hammer 17 to alternately open and close the flow channel. As a result, alternating pressure differences are generated on both sides of the hydraulic hammer 17, thereby driving the hydraulic hammer 17 to rotate circumferentially and reciprocate.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications or equivalent substitutions made to the present invention without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present invention.

Claims

1. A multi-dimensional composite impactor for drilling, characterized by, The utility model relates to a transmission short circuit, tool shell lower end fixed connection with transmission short circuit, tool shell inside has flow channel, torsional impact component, torsional impact component is located in the lower part of tool shell and includes pressure disc, center shaft fixed plate, hammer shell, center shaft, impeller, valve plate and hydraulic hammer, wherein the outer side wall surface of hammer shell is fixedly connected with the inner side wall surface of tool shell and extends along the inner side wall surface of tool shell, the upper end of the inside of hammer shell is provided with first step structure, the middle part is provided with second step structure and the lower end is provided with third step structure, both ends of center shaft fixed plate are fixedly connected to first step structure and the middle part of center shaft fixed plate is provided with hole, both sides of pressure disc are fixedly connected to hammer shell and are located the upper end of center shaft fixed plate and can press the center shaft fixed plate, center shaft has first part, second part and third part connected in proper order, the upper end of first part is inserted into the hole in the middle part of center shaft fixed plate and is fixed, the connecting part of first part and second part is located in the middle part of hammer shell, both sides of connecting part are connected valve plate respectively, one side of valve plate is fixedly connected with the side part of connecting part and the other side is fixed on the second step structure in the middle part of hammer shell, the lower end of third part of center shaft is inserted into the hole in the bottom of hammer shell and is fixed, both sides of third part are provided with lug, impeller is fixed on the first part of center shaft, hydraulic hammer is installed between valve plate, hammer shell, lug and second part of center shaft, both valve plate and hydraulic hammer are provided with flow channel, the third step structure of lower end of hammer shell is fixedly connected to transmission short circuit. ​ ​ ​ An axial impact component is located in the upper part of the tool housing and fixedly connected with the torsional impact component through the pressure disc, the axial impact component comprises a shunt pipe, a nozzle, a nozzle seat, a hammer sleeve, a valve sleeve, a piston and a hammer, wherein the two sides of the nozzle seat are fixedly connected with the inner side wall surface of the tool housing, the shunt pipe is fixedly connected above the middle part of the nozzle seat, the nozzle is located below the shunt pipe and arranged in the middle part of the nozzle seat, the hammer sleeve is fixedly connected with the inner side wall surface of the tool housing, the upper end of the hammer sleeve is abuttingly connected with the bottom end of the nozzle seat and the hammer sleeve extends downward along the inner side wall surface of the tool housing until the lower end of the hammer sleeve is fixedly connected with the pressure disc, the inner side wall surface of the hammer sleeve is provided with a first boss, the inside of the hammer sleeve is provided with the valve sleeve, the piston and the hammer, the valve sleeve is limited by the first boss on the inner side wall surface of the hammer sleeve, a cavity is formed between the valve sleeve and the nozzle seat, the lower part of the valve sleeve cooperates with the piston, the piston is fixedly connected to the hammer, the piston and the hammer are both provided with flow channels, the lower end of the hammer is fixed to the bottom of the hammer sleeve, the bottom of the hammer sleeve is communicated with the middle part of the pressure disc and the upper end of the central shaft fixing plate. The hammer sleeve is in the form of a barrel structure as a whole, the upper part of the hammer sleeve is in the form of a hexagonal structure and the inner diameter of the lower part of the hammer sleeve is larger than that of the upper part, and the outer part of the valve sleeve is in the form of a hexagonal structure as a whole to cooperate with the hexagonal structure of the upper part of the hammer sleeve.

2. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, Further comprising: A wear-resistant ring arranged on the valve sleeve, the piston and the hammer.

3. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The lower end of the tool housing is threadedly connected with the transmission stub.

4. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The upper part of the shunt pipe is in the form of a cone and the outer part is provided with a rectangular hole.

5. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The nozzle seat is bolted with the hammer sleeve through bolt holes.

6. The multi-dimensional composite impactor for drilling a wellbore according to claim 5, wherein, The inside of the valve sleeve is in the form of a barrel structure as a whole and the radius of the lower part is gradually reduced to cooperate with the piston.

7. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The piston and the hammer are threadedly connected and form an integral structure, and the lower parts of the piston and the hammer are respectively provided with rectangular holes to form flow channels.

8. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The upper part of the piston comprises a reduced diameter section to cooperate with the valve sleeve.

9. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The hammer is in the form of a streamline as a whole, the lower part of the hammer is provided with a second boss abutting against the inner side wall surface of the hammer sleeve to limit the circumferential displacement of the hammer.

10. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The pressure disc is threadedly connected with the hammer sleeve and the hammer housing.

11. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The upper part of the hammer housing is in the form of a hollow cylinder and the lower part is in the form of a hollow fan structure.

12. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The central shaft fixing plate is threadedly pressed through the pressure disc and the hammer housing, and the upper part of the central shaft fixing plate is in the form of a conical structure.

13. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The impeller is in the form of a streamline structure.

14. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The valve plate is threadedly connected with the connection part and rotates together with the central shaft.

15. The multi-dimensional composite impactor for drilling a wellbore according to claim 11, wherein, The hydraulic hammer is in the form of a symmetrical fan-shaped column structure to cooperate with the fan-shaped structure of the hammer housing.

16. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The two ends of the hammer sleeve are fixedly connected with the tool housing and the part between the two ends of the hammer sleeve has a gap with the inner side wall surface of the tool housing.

17. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The outer side wall surface of the hammer housing is tightly fixed with the inner side wall surface of the tool housing.

18. The multi-dimensional composite impactor for drilling a wellbore according to claim 1, wherein, The diameters of the first part, the second part and the third part are gradually reduced.

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