Composite ultra-light telecommunication intelligent guide wire-line coring drill rod

Abstract

The invention discloses a composite ultra-light telecommunication intelligent guide wire-line coring drill rod, which belongs to the field of geological exploration drilling equipment and matched technologies, and comprises a drill rod body and a male joint connected with the drill rod body, the drill rod body comprises an upper female connector, an upper contact ring assembly, a metal framework, a wire, an outer composite carbon fiber layer, an inner composite carbon fiber layer, an outer ceramic composite fiber layer, an inner ceramic composite fiber layer and a lower female connector. The upper contact ring assembly is arranged on the outer ring of the metal framework, the metal framework is connected with the two ends of the upper female connector and the two ends of the lower female connector in an inlaid welding mode, and the outer portion of the metal framework is sequentially bonded with the outer composite carbon fiber layer and the outer ceramic composite fiber layer through bonding slurry. The inner composite carbon fiber layer and the inner ceramic composite fiber layer are sequentially bonded in the metal framework through bonding slurry, and the wire is arranged between the outer composite carbon fiber layer and the outer ceramic composite fiber layer. The wire-line coring drill rod provided by the invention has the characteristics of low density, light weight, no magnetism, telecom intelligent conductivity and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration drilling equipment and supporting equipment, and in particular relates to a composite ultra-light telecommunication intelligent guided rope coring drill rod. Background Art

[0002] The drill pipe is an important tool used by the drilling rig to drill underground. Its function is to transmit rotary torque and drill bit pressure, transport flushing media (gas or liquid), and take cores. At present, there are two main types of drill pipes for drilling: ordinary drill pipes and large through-hole thin-walled rope coring drill pipes. Regardless of the type of drill pipe, alloy steel is used as the manufacturing material. Because the material is alloy steel, its high density and heavy weight restrict the lightweight development of drilling equipment; the metal body of the steel drill pipe is magnetic, which makes it difficult to quickly and accurately transmit the monitoring parameter signal in the borehole. The key to achieving lightweight drilling equipment is to reduce the weight of the drill pipe in the drilling hole, and the key to intelligent drilling in the drilling hole is to solve the problem of rapid signal transmission in the hole. So far, the technical bottleneck of ultra-light electrical signal intelligent guide drill pipe has not been solved. In addition, the current trial products of carbon fiber drill pipes have poor wear resistance, torsional and compressive strengths that cannot meet the requirements, the drill pipe body and the joint are not firmly combined, and the tensile strength is low. There is no good solution. Therefore, how to solve the problem of lightweight drill pipe and telecommunication intelligence is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0003] The purpose of the present invention is to provide a composite ultra-light telecommunication intelligent guided rope coring drill rod to solve the problems of the above-mentioned technology that the existing drill rods are heavy, have poor wear resistance, low torsional and compressive strength, and are difficult to quickly transmit signals in the hole.

[0004] To achieve the above-mentioned object, the present invention provides a composite ultra-light telecommunication intelligent guided rope coring drill pipe, comprising a drill pipe body and a male joint connected to the drill pipe body, wherein the male joint is connected to the drill pipe body by a thread; lower contact ring assemblies are symmetrically arranged at both ends of the male joint, and a signal line is arranged between the lower contact ring assemblies symmetrically arranged at both ends;

[0005] The drill pipe body includes an upper female joint, an upper contact ring assembly, a metal skeleton, a conductor, an outer composite carbon fiber layer, an inner composite carbon fiber layer, an outer ceramic composite fiber layer, an inner ceramic composite fiber layer, and a lower female joint; the upper contact ring assembly is arranged on the outer ring of the metal skeleton, and the metal skeleton is respectively welded to both ends of the upper female joint and the lower female joint, the outside of the metal skeleton is bonded to the outer composite carbon fiber layer and the outer ceramic composite fiber layer in turn by an adhesive slurry, and the inside of the metal skeleton is bonded to the inner composite carbon fiber layer and the inner ceramic composite fiber layer in turn by an adhesive slurry, the conductor is arranged between the outer composite carbon fiber layer and the outer ceramic composite fiber layer, and both ends of the conductor are connected to the upper contact ring assembly.

[0006] Preferably, the upper contact ring assembly includes an upper contact ring groove and an upper contact ring disposed inside the upper contact ring groove; the lower contact ring assembly includes a lower contact ring groove and a lower contact ring disposed inside the lower contact ring groove.

[0007] Preferably, the metal skeleton, the upper female joint and the lower female joint are all made of titanium alloy seamless tube material with a wall thickness of 1.0 to 1.5 mm to enhance the torsion and compression resistance of the drill rod and the tensile and wear resistance of the drill rod connection.

[0008] Preferably, the outer composite carbon fiber layer and the inner composite carbon fiber layer are both made of polyacrylonitrile-based carbon fiber, T1000-12K specification material; the outer ceramic composite fiber layer and the inner ceramic composite fiber layer are both made of silicon carbide long fiber specification material, the composite carbon fiber is used to increase the tensile and compressive strength of the drill pipe body, and the ceramic composite fiber is used to increase the wear resistance of the inner and outer layers of the drill pipe body.

[0009] Preferably, the adhesive slurry is high-strength epoxy resin glue.

[0010] Preferably, the wire is made of silver-gold-plated low-resistance material and has a diameter of 0.3 to 0.5 mm.

[0011] Preferably, when the male connector is threadedly connected to the drill pipe body, the upper contact ring is mated with the adjacent lower contact ring, and the conductive wire is connected to the signal wire.

[0012] Preferably, insulating plastic rings are disposed outside the upper contact ring and the lower contact ring.

[0013] Therefore, the present invention adopts a composite ultra-light telecom intelligent guided rope coring drill pipe of the above structure, the drill pipe body and joints are all made of ultra-light and non-magnetic materials, the drill pipe wall thickness is basically consistent with the structural dimensions of rope coring drill pipes of the same level, and can meet the technical requirements of rope coring drill pipes, and has the characteristics of low density, light weight, high strength, good wear resistance and corrosion resistance, non-magnetic and telecom intelligent guidance, etc. It provides important technical support for promoting the lightweight of drilling equipment and the development of intelligent drilling parameter monitoring technology.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional schematic diagram of a composite ultra-light telecommunication intelligent guided rope coring drill rod of the present invention;

[0016] Figure 2 It is a schematic cross-sectional view of the drill rod body structure of a composite ultra-light telecommunication intelligent guided rope coring drill rod of the present invention;

[0017] Figure 3 It is a cross-sectional schematic diagram of a male joint of a composite ultra-light telecommunication intelligent guide rope coring drill rod of the present invention;

[0018] Figure 4 It is a cross-sectional view at AA of the present invention;

[0019] Among them, 1. upper female connector; 2. upper contact ring; 3. metal frame; 4. wire; 5. outer composite carbon fiber layer; 6. inner composite carbon fiber layer; 7. inner ceramic composite fiber layer; 8. outer ceramic composite fiber layer; 9. lower female connector; 10. upper contact ring groove; 11. male connector; 12. signal line; 13. lower contact ring groove; 14. insulating plastic ring; 15. lower contact ring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Example

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0024] See also Figure 1-4A composite ultra-light telecommunication intelligent guide rope coring drill pipe comprises a drill pipe body and a male connector 11 connected to the drill pipe body, wherein the male connector 11 is connected to the drill pipe body by threads; two lower contact ring assemblies are symmetrically arranged at both ends of the male connector 11, and a signal line 12 is arranged between the lower contact ring assemblies symmetrical at both ends; the drill pipe body comprises an upper female connector 1, an upper contact ring assembly, a metal skeleton 3, a conductor 4, an outer composite carbon fiber layer 5, an inner composite carbon fiber layer 6, an outer ceramic composite fiber layer 8, an inner ceramic composite fiber layer 7, and a lower female connector 9; the upper contact ring assembly is arranged on the outer ring of the metal skeleton 3, and the metal skeleton 3 is respectively welded to the two ends of the upper female connector 1 and the lower female connector 9, the outer side of the metal skeleton 3 is bonded to the outer composite carbon fiber layer 5 and the outer ceramic composite fiber layer 8 by adhesive slurry in turn, and the inner side of the metal skeleton 3 is bonded to the inner composite carbon fiber layer 6 and the inner ceramic composite fiber layer 7 by adhesive slurry in turn, the conductor 4 is arranged between the outer composite carbon fiber layer 5 and the outer ceramic composite fiber layer 8, and both ends of the conductor 4 are connected to the upper contact ring assembly. The upper contact ring assembly includes an upper contact ring groove 10 and an upper contact ring 2 disposed inside the upper contact ring groove 10; the lower contact ring assembly includes a lower contact ring groove 13 and a lower contact ring 15 disposed inside the lower contact ring groove 13. The upper contact ring 2 and the lower contact ring 15 are both provided with an insulating plastic ring 14 on the outside, and a copper metal ring is embedded inside, and the contact points of the conductor 4 and the signal line 12 are welded firmly on the copper metal ring. The metal skeleton 3, the upper female connector 1 and the lower female connector 9 are all made of titanium alloy seamless pipe material with a wall thickness of 1.0 to 1.5 mm to enhance the torsion and compression resistance of the drill pipe and the tensile resistance and wear resistance of the drill pipe connection. The outer composite carbon fiber layer 5 and the inner composite carbon fiber layer 6 are both made of polyacrylonitrile-based carbon fiber, T1000-12K specification material; the outer ceramic composite fiber layer 8 and the inner ceramic composite fiber layer 7 are both made of silicon carbide long fiber specification material, the composite carbon fiber is used to increase the tensile and compressive strength of the drill rod body, and the ceramic composite fiber is used to increase the wear resistance of the inner and outer layers of the drill rod body. The outer composite carbon fiber layer 5, the inner composite carbon fiber layer 6, the outer ceramic composite fiber layer 8 and the inner ceramic composite fiber layer 7 are all pre-woven into composite fiber tubular shapes according to the inner and outer dimensions of the metal skeleton 3, and then layered and glued and heated to about 200°C, and pressed into the inside and outside of the metal skeleton 3 with a special mold, firmly bonded to it as a whole, and the mold is taken out after cooling to room temperature, and the drill rod body is formed; in order to enhance the bonding force with the composite carbon fiber, the inner and outer surfaces of the metal skeleton 3 tube are pre-machined into fine spiral rough surfaces to increase the bonding surface area; the bonding slurry is a high-strength epoxy resin glue with a temperature resistance of more than 200°C and a room temperature consolidation time of 30 to 40 minutes. The wire 4 is made of silver-plated low-resistance material with a diameter of 0.3-0.5 mm. The wire 4 is connected in such a way that the two ends of the drill rod body are inserted into insulating plastic rings 14, the insulating plastic rings 14 are embedded in copper metal rings, and the wire 4 contacts are welded to the lower end of the copper metal ring. The two ends of the signal wire 12 buried in the male connector 11 are welded to the lower contact ring 15.When the male connector 11 is connected to the drill pipe body through threads, the upper contact ring 2 is matched with the adjacent lower contact ring 15, and the conductor 4 is connected with the signal line 12 to transmit the signal in the hole.

[0025] Therefore, the present invention adopts a composite ultra-light telecommunication intelligent rope coring drill rod with the above structure, uses a composite lightweight non-magnetic fiber material to make the drill rod, and buries a wire in the drill rod to achieve ultra-lightness of the drill rod body and rapid and accurate transmission of in-hole parameter monitoring signals; it provides important technical support for promoting the lightweight of drilling equipment and the development of intelligent drilling parameter monitoring technology.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A composite ultra-light telecommunication intelligent guided rope coring drill rod, characterized in that: It comprises a drill pipe body and a male connector connected to the drill pipe body, wherein the male connector is connected to the drill pipe body by threads; lower contact ring assemblies are symmetrically arranged at both ends of the male connector, and a signal line is arranged between the lower contact ring assemblies symmetrically arranged at both ends; The drill pipe body includes an upper female joint, an upper contact ring assembly, a metal skeleton, a conductor, an outer composite carbon fiber layer, an inner composite carbon fiber layer, an outer ceramic composite fiber layer, an inner ceramic composite fiber layer, and a lower female joint; the upper contact ring assembly is arranged on the outer ring of the metal skeleton, and the metal skeleton is respectively welded to both ends of the upper female joint and the lower female joint, the outside of the metal skeleton is bonded to the outer composite carbon fiber layer and the outer ceramic composite fiber layer in turn by an adhesive slurry, and the inside of the metal skeleton is bonded to the inner composite carbon fiber layer and the inner ceramic composite fiber layer in turn by an adhesive slurry, the conductor is arranged between the outer composite carbon fiber layer and the outer ceramic composite fiber layer, and both ends of the conductor are connected to the upper contact ring assembly.

2. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: The upper contact ring assembly comprises an upper contact ring groove and an upper contact ring arranged inside the upper contact ring groove; the lower contact ring assembly comprises a lower contact ring groove and a lower contact ring arranged inside the lower contact ring groove.

3. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: The metal skeleton, the upper female joint and the lower female joint are all made of titanium alloy seamless pipe material with a wall thickness of 1.0 to 1.5 mm.

4. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: The outer composite carbon fiber layer and the inner composite carbon fiber layer are both made of polyacrylonitrile-based carbon fiber, T1000-12K specification material; the outer ceramic composite fiber layer and the inner ceramic composite fiber layer are both made of silicon carbide long fiber specification material.

5. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: The bonding slurry is high-strength epoxy resin glue.

6. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: The wire is made of silver-gold-plated low-resistance material and has a diameter of 0.3-0.5 mm.

7. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: When the male connector is connected to the drill pipe body through threads, the upper contact ring is matched and docked with the adjacent lower contact ring, and the conductive wire is connected to the signal wire.

8. The composite ultra-light telecommunication intelligent guided rope coring drill rod according to claim 1, characterized in that: Insulating plastic rings are arranged outside the upper contact ring and the lower contact ring.

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