Synergistic strain electrical logging and hydraulic deviation correcting system and non-sinking method for achieving ultra-deep horizontal drilling

Abstract

The invention relates to a cooperative strain electrical logging and hydraulic deviation rectifying system and a non-sinking method for achieving ultra-deep horizontal drilling. The cooperative strain electrical logging and hydraulic deviation rectifying system comprises a hydraulic tunneling system, a hydraulic deviation rectifying system and a strain electrical logging system. By means of the synergistic effect of a hydraulic tunneling system and a strain electric measurement system, in the ultra-deep horizontal drilling tunneling process, the sinking deviation, generated by gravity, of a drill bit can be accurately detected, at the moment, a hydraulic deviation correction system is started, and horizontal correction of the sinking deviation of the drill bit is achieved under the coupling effect of the hydraulic deviation correction system and the strain electric measurement system. The sinking problem in the ultra-deep horizontal drilling tunneling process can be effectively solved, and the space position of actual hole forming and the space position of hole forming design have no difference.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering rock masses, and in particular to a system for synergistic strain electro-measurement and hydraulic deviation correction and a method for realizing non-sinking of ultra-deep horizontal drilling. Background Art

[0002] At present, during the tunneling process of ultra-deep horizontal drilling, due to the action of gravity, the drill pipe will bend and sink, resulting in the deviation of the drilled hole from the original design after formation and no longer being in a horizontal state. At present, the orientation problem of ultra-deep horizontal drilling mostly stays in the theoretical research stage, and relevant researchers have not designed a practical horizontal drilling system. In engineering practice, engineering technicians mostly roughly estimate the sinking amount of the ultra-long drill pipe and then design a drilled hole with a slight elevation angle. Therefore, the problem of ultra-deep horizontal drilling has always troubled the research and engineering technicians in related fields and cannot be effectively solved. Summary of the Invention

[0003] The object of the present invention is to solve the above problems and provide a system for synergistic strain electro-measurement and hydraulic deviation correction and a method for realizing non-sinking of ultra-deep horizontal drilling. To solve the above technical problems, the present invention adopts the following technical solutions:

[0004] A system for synergistic strain electro-measurement and hydraulic deviation correction includes a hydraulic tunneling system, a hydraulic deviation correction system, and a strain electro-measurement system. The hydraulic tunneling system includes a directional drill, a drill pipe bearing device, and a drill pipe. The directional drill is connected to the drill pipe, and the drill pipe bearing device is connected to the drill pipe by welding to form an improved drill pipe. The drill pipe bearing device is used to keep the drill pipe in a straight state. The hydraulic deviation correction system includes a self-balancing multi-stage pump, a bearing, an annular water bag, and a water bag supply hose. The self-balancing multi-stage pump is sequentially connected to the water bag supply hose and the annular water bag, and the bearing is combined with the annular water bag. The strain electro-measurement system includes a multi-functional static strain gauge, a computer, and a strain gauge. The computer is sequentially connected to the multi-functional static strain gauge and the strain gauge, and adjusts the hydraulic deviation correction system by monitoring the strain gauge data collected by the multi-functional static strain gauge on the computer.

[0005] A method for realizing non-sinking of ultra-deep horizontal drilling by a system for synergistic strain electro-measurement and hydraulic deviation correction includes the following steps:

[0006] (1) According to the outer diameter size of the drill pipe, purchase a bearing with an inner ring matching it, combine a high-strength rubber water bag with an inner diameter matching the outer ring of the bearing to form a combination, and weld the combination to the drill pipe to form an improved drill pipe. Combine the improved drill pipe with a directional drill to form the hydraulic tunneling system of the present device;

[0007] (2) Connect the self-balancing multi-stage pump, the bearing, the annular water bag, and the water bag supply hose in an orderly manner to form a hydraulic deviation correction system;

[0008] (3) Connect the multi-functional static strain gauge, computer, and strain gauges in an orderly manner to form a strain electrical measurement system;

[0009] (4) Start the directional drill. When the drilling depth reaches a certain value h, record the number of drill pipes in the borehole as m, stop the tunneling, withdraw the drill pipes in an orderly manner, and at the same time wipe the surface of the drill pipes clean and let them dry;

[0010] (5) Install an additional drill pipe to make the number of drill pipe groups m + 1, that is, A1, A m 、A m+1 , and use strong glue to paste the strain gauges in the middle of each drill pipe, that is, strain gauges B1, B m 、B m+1 , and at the same time connect the strain gauges with the multi-functional static strain gauge and computer in an orderly manner;

[0011] (6) At this time, place the drill pipe group composed of m + 1 drill pipes horizontally on the ground, turn on the multi-functional static strain gauge, and adjust it to the balanced state with the help of the data analysis system of the computer, that is, all data is 0;

[0012] (7) Insert the m + 1 drill pipe group with strain gauges pasted into the borehole, and make the drill bit slightly contact the coal wall at the bottom of the hole. At this time, due to the action of gravity, when the drill pipe sinks and deforms by a, that is, when the computer analysis system shows that the dynamic monitoring data of B1, B m 、B m+1 will no longer be 0;

[0013] (8) At this time, turn on the self-balancing multi-stage pump, supply water to the annular water bag through the water bag supply hose. As the water volume increases, the water bag will gradually bulge. At this time, the sinking deformation a of the drill pipe caused by gravity will also gradually recover by b until the balanced state c, that is, the computer dynamic monitoring data shows 0 again, indicating that the drill pipe will no longer deform at this time, the strain gauges return to the original state, and the self-balancing multi-stage pump stops supplying water and maintains a constant working pressure;

[0014] (9) Turn off the strain monitoring system, withdraw the wires connecting the strain gauges, and start the next cycle of borehole tunneling work.

[0015] Since the present invention adopts the above technical solutions, it has remarkable technical effects: (1) This technical method forms a hydraulic deviation correction system that can offset and compensate for the sinking of drill pipes due to gravity by upgrading and transforming the original drill pipes. (2) With the synergistic effect of the hydraulic deviation correction system and the strain electrical measurement system, this technical method can accurately judge the bending and sinking amount of drill pipes, and successfully realizes the correction of the bending and sinking of horizontal ultra-long drill pipes due to their own weight. (3) Through the application of this technical method, it can effectively solve the problem of drill pipe sinking caused by gravity in engineering practice, realize the horizontal tunneling of ultra-deep boreholes, and ultimately promote the process from rough construction to precise construction in coal mining. Brief Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of a technology for realizing non - sinking in ultra - deep horizontal drilling by a collaborative strain - electrical measurement and hydraulic deviation - rectifying system in the present invention;

[0017] Figure 2 It shows the process of the assembly 6 gradually adjusting through the annular water bag 8 when the front end of the drill pipe 10 is bent. Figures a, b, and c of the drawing respectively correspond to the states of the front end of the drill pipe 10 being bent, during the adjustment process, and after the adjustment is completed;

[0018] Figure 3 It is a strain change curve of the strain gauge when the computer 4 uses the multi - functional static strain gauge 3 to monitor the bending of the front end of the drill pipe 10 and the drill pipe 10 gradually returns to horizontal after the hydraulic deviation - rectifying system is turned on. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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, an electrical connection, a direct connection, or a connection through an intermediate medium. It can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Such as Figure 1-2As shown in the figure, a method for realizing non-sinking of ultra-deep horizontal drilling by a collaborative strain electrical measurement and hydraulic deviation correction system in the present invention is implemented through a hydraulic tunneling system, a hydraulic deviation correction system, and a strain electrical measurement system. The hydraulic tunneling system includes a directional drill 1, a drill pipe bearing device 6, and a drill pipe 10. The directional drill 1 is connected to the drill pipe 10, and the drill pipe bearing device 6 is connected to the drill pipe by welding to form an improved drill pipe 10. The directional drill 1 provides power, and the drill pipe bearing device 6 is used to keep the drill pipe 10 in a straight state. The hydraulic deviation correction system includes a self-balancing multi-stage pump 2, a bearing 7, an annular water bag 8, and a water bag supply hose 9. The self-balancing multi-stage pump 2 is sequentially connected to the water bag supply hose 9 and the annular water bag 8, and the bearing 7 is combined with the annular water bag 8. The self-balancing multi-stage pump 2 injects water into the annular water bag 8 through the water bag supply hose 9 to adjust the position of the drill pipe 10. The strain electrical measurement system includes a multi-functional static strain gauge 3, a computer 4, and a strain gauge 5. The computer 4 is sequentially connected to the multi-functional static strain gauge 3 and the strain gauge 5, and adjusts the hydraulic deviation correction system by monitoring the data of the strain gauge 5 collected by the multi-functional static strain gauge 3 on the computer 4.

[0023] A method for realizing non-sinking of ultra-deep horizontal drilling by a collaborative strain electrical measurement and hydraulic deviation correction system in the present invention includes the following steps:

[0024] (1) According to the outer diameter size of the drill pipe, purchase a bearing 7 with an inner ring matching it, combine a high-strength rubber water bag with an inner diameter matching the outer ring of the bearing 7 to form a drill pipe bearing device 6, and weld the drill pipe bearing device 6 to the drill pipe to form an improved drill pipe 10. Combine the improved drill pipe 10 with the directional drill 1 to form the hydraulic tunneling system of this device;

[0025] (2) Connect the self-balancing multi-stage pump 2, the bearing 7, the annular water bag 8, and the water bag supply hose 9 in an orderly manner to form a hydraulic deviation correction system;

[0026] (3) Connect the multi-functional static strain gauge 3, the computer 4, and the strain gauge 5 in an orderly manner to form a strain electrical measurement system;

[0027] (4) Start the directional drill 1. When the drilling depth reaches a certain value h, record the number of drill pipes in the borehole as m, stop tunneling, withdraw the drill pipes 10 in an orderly manner, and at the same time wipe the surface of the drill pipes clean and dry them;

[0028] (5) Install an additional drill pipe so that the number of drill pipe groups is m + 1, that is, A1, A m , A m+1 , and use strong glue to paste the strain gauge 5 in the middle of each drill pipe, that is, strain gauges B1, B m , B m+1 , and at the same time connect the strain gauge 5 with the multi-functional static strain gauge 3 and the computer 4 in an orderly manner;

[0029] (6) At this time, the drill pipe group composed of m + 1 drill pipes is placed horizontally on the ground, the multi-functional static strain gauge 3 is turned on, and with the aid of the data analysis system of the computer 4, it is adjusted to a balanced state, that is, all data is 0;

[0030] (7) Insert the m + 1 drill pipe group with strain gauges 5 pasted on it into the drill hole, making the drill bit slightly contact the coal wall at the bottom of the hole. At this time, due to the action of gravity, when the drill pipe sinks and deforms by a, that is, when the computer analysis system shows B1, B m 、B m+1 the dynamic monitoring data will no longer be 0;

[0031] (8) At this time, turn on the self-balancing multi-stage pump 2, supply water to the annular water bag 8 through the water bag supply hose 9. As the water volume increases, the water bag 8 will gradually bulge. At this time, the sinking deformation a of the drill pipe caused by gravity will also gradually recover to b until the balanced state c, that is, the computer dynamic monitoring data shows 0 again, indicating that the drill pipe will no longer deform at this time, the strain gauge returns to its original state, and the self-balancing multi-stage pump stops supplying liquid and maintains a constant working pressure;

[0032] (9) Turn off the strain monitoring system, withdraw the wire connected to the strain gauge 5, and start the next cycle of drilling and tunneling work.

[0033] The present invention discloses a method for realizing non-sinking of ultra-deep horizontal drill holes by means of a collaborative strain electrical measurement and hydraulic deviation correction system. Usually, in the process of drilling ultra-deep horizontal drill holes in geotechnical engineering, the ultra-long drill pipes show different degrees of bending and sinking due to the action of gravity, resulting in an asymptotic sinking phenomenon of the designed horizontal drill hole along the long axis direction of the drill hole, showing a certain deviation from the design requirements. The present invention consists of a hydraulic tunneling system composed of a directional drill 1, a drill pipe bearing device 6, and drill pipes 10; a hydraulic deviation correction system composed of a self-balancing multi-stage pump 2, a bearing 7, an annular water bag 8, and a water bag supply hose 9; and a strain electrical measurement system composed of a multi-functional static strain gauge 3, a computer 4, and strain gauges 5, which are composed of three parts. With the collaborative action of the hydraulic tunneling system and the strain electrical measurement system, during the process of ultra-deep horizontal drill hole tunneling, the sinking deviation amount generated by the drill bit due to gravity can be accurately detected. At this time, turn on the hydraulic deviation correction system. Under the coupling action of the hydraulic deviation correction system and the strain electrical measurement system, the horizontal correction of the sinking deviation amount of the drill bit is realized. The application of this technical method can effectively solve the sinking problem during the process of ultra-deep horizontal drill hole tunneling and realize no difference in the spatial position between the actual and designed drilled holes.

[0034] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0035] The embodiments described above only represent the implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A collaborative strain electrical measurement and hydraulic rectification system, characterized in that: It includes a hydraulic tunneling system, a hydraulic deviation correction system and a strain electrical measurement system. The hydraulic tunneling system includes a directional drill, a drill pipe carrier device and drill pipes. The directional drill is connected to the drill pipes. The drill pipe carrier device is connected to the drill pipes by welding to form an improved drill pipe. The drill pipe carrier device is used to keep the drill pipes in a straight state. The hydraulic deviation correction system includes a self-balancing multi-stage pump, bearings, an annular water bag and a water bag supply hose. The self-balancing multi-stage pump is sequentially connected to the water bag supply hose and the annular water bag. The bearings are combined with the annular water bag. The strain electrical measurement system includes a multi-functional static strain gauge, a computer and strain gauges. The computer is sequentially connected to the multi-functional static strain gauge and the strain gauges, and adjusts the hydraulic deviation correction system by monitoring the strain gauge data collected by the multi-functional static strain gauge on the computer.

2. A method for achieving non-sinking of ultra-deep horizontal drilling by applying the collaborative strain electrical measurement and hydraulic rectification system according to claim 1, characterized in that: It includes the following steps: (1) According to the outer diameter size of the drill pipes, purchase bearings with an inner ring matching thereto, combine a high-strength rubber water bag with an inner diameter matching the outer ring of the bearings to form a combination body, and weld the combination body to the drill pipes to form an improved drill pipe; form the hydraulic tunneling system of this device by combining the improved drill pipe with a directional drill; (2) Connect the self-balancing multi-stage pump, bearings, annular water bag and water bag supply hose in an orderly manner to form a hydraulic deviation correction system; (3) Connect the multi-functional static strain gauge, computer and strain gauges in an orderly manner to form a strain electrical measurement system; (4) Start the directional drill. When the drilling depth reaches a certain value h, record the number of drill pipes in the borehole as m, stop tunneling, withdraw the drill pipes in an orderly manner, and at the same time wipe the surfaces of the drill pipes clean and dry them; (5) Install an additional drill pipe to make the number of drill pipe groups m + 1, namely A1, A m , A m+1 , and use strong glue to paste strain gauges in the middle of each drill pipe, namely strain gauges B1, B m , B m+1 , and at the same time connect the strain gauges to the multi-functional static strain gauge and the computer in an orderly manner; (6) At this time, horizontally place the drill pipe group composed of m + 1 drill pipes on the ground, start the multi-functional static strain gauge, and with the aid of the data analysis system of the computer, adjust it to a balanced state, that is, all data is 0; (7) Insert the m + 1 drill pipe group with strain gauges pasted into the borehole, and make the drill bit slightly contact the coal wall at the bottom of the hole. At this time, due to the action of gravity, when the drill pipe sinks and deforms by a, that is, when the computer analysis system shows B1, B m 、B m+1 The dynamic monitoring data will no longer be 0; (8) At this time, start the self-balancing multi-stage pump, supply water to the annular water bag through the water bag supply hose. As the water volume increases, the water bag will gradually bulge. At this time, the drill pipes will gradually recover by b from the sinking deformation a caused by gravity until the balanced state c, that is, the computer dynamic monitoring data shows 0 again, indicating that the drill pipes will no longer deform at this time, the strain gauges return to the original state, and the self-balancing multi-stage pump stops supplying liquid and maintains a constant working pressure; (9) Turn off the strain monitoring system, withdraw the wires connecting the strain gauges, and start the next cycle of drilling and tunneling work.

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