CN214196219U

CN214196219U - Ultralow-specific-gravity continuous cable pipe for self-balancing drilling tool system

Info

Publication number: CN214196219U
Application number: CN202120105160.8U
Authority: CN
Inventors: 赵研; 高科; 钱雨华; 李家晟; 钱荣国
Original assignee: Jinzhou Zhongke Pipe Manufacturing Co ltd; Jilin University
Current assignee: Jinzhou Zhongke Pipe Manufacturing Co ltd; Jilin University
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-09-14
Anticipated expiration: 2031-01-15

Abstract

An ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system, comprising an outer tube, an inner tube, a power supply line, a signal transmission optical fiber, a signal transmission cable and an ultra-low density filling material, wherein the outer tube is coaxial with the inner tube, The annular space between the outer tube and the inner tube is filled with power supply lines, signal transmission optical fibers and signal transmission cables, and the annular space between the outer tube and the inner tube is also filled with ultra-low density filling materials, forming a flexible The whole coiled cable tube with a bending radius near the specific gravity of the mud drilling fluid, the center of the inner tube is provided with a channel for transmitting drilling fluid, the utility model can provide electric power, signals, data and continuity for the downhole self-balancing drilling tool system through the coiled tube Circulating drilling fluid, etc., at the same time, it can not only quickly trip the drilling, but also can uninterrupted drilling fluid circulation, reduce the auxiliary time such as tripping, reduce the disturbance degree of drilling tools to the well wall and the complexity of the well caused by the stop of drilling fluid circulation. .

Description

Ultralow-specific-gravity continuous cable pipe for self-balancing drilling tool system

Technical Field

The utility model belongs to the technical field of drilling engineering downhole tool, in particular to adaptation is in continuous cable pipe of super low proportion for self-balancing drilling tool system.

Background

The applicant proposes a downhole torque self-balancing cabled drilling tool system, and the patent numbers are as follows: CN201710082518.8, has three main advantages: one is to eliminate the drilling machine. The near-bit drive replaces the rotary drive of the drilling machine, while-drilling mud circulation replaces the circulation of a ground slurry pump, and the near-bit pressure regulating system replaces a drilling machine hook to control bit pressure; and secondly, the dependence on the depth of the drill rod is eliminated. The armored cable pipe is used as a main transmission medium, so that uninterrupted drilling fluid circulation during tripping up and tripping down is realized, tripping up and tripping down time is greatly reduced, and disturbance of a drilling tool to a well wall and complexity in the well caused by the fact that the drilling fluid stops circulating are reduced; thirdly, the in-situ measurement, real-time transmission and accurate control of the well bottom are realized. The dynamic parameter change of the underground drilling tool can be monitored and obtained in situ in real time while drilling, and the requirements of intellectualization and simplification are met better. Although the technology has breakthrough in theory and technology, the technology has some defects and application limitations, and is mainly characterized in that the technology can only carry out vertical dead-weight pressurizing drilling, cannot carry out autonomous pressurizing and cannot implement directional drilling. Therefore, the utility model discloses the people has proposed "a from walking from diversion direction drilling system again", patent number is CN2020109883782, this utility model discloses can make the moment of torsion self-balancing in the pit have cable drilling tool system to realize independently pressurizing the walking in the well, automatic diversion and direction, nearly drill bit normal position monitoring, real-time data transmission and to drilling system's accurate control, belong to a high integration, automatic direction drilling system to filled the moment of torsion self-balancing in the pit has the blank in the aspect of cable drilling tool system walking feeding and diversion drilling.

Above two utility model all need follow ground acquisition energy to establish signal transmission and well drilling fluid circulation passageway with ground, reduce to the influence of drilling tool in the well drilling fluid in order to make this passageway, still need it to have the proportion similar with the drilling fluid proportion. However, a continuous cable pipe which can meet the requirements and has the functions of transmitting electric energy, signals and drilling fluid circulation, certain tensile and compression resistance, extrusion deformation and similar proportion to the drilling fluid does not exist at present. Therefore, the utility model relates to a can satisfy continuous cable pipe that self-balancing drilling tool system was used, it is very necessary to the application and the popularization of self-balancing drilling system, and is significant to high efficiency, energy-conserving drilling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a self-balancing drilling tool system is with continuous cable pipe of ultralow proportion, the purpose is for ground equipment and the self-balancing drilling system in pit has set up energy, signal and drilling fluid transmission path.

An ultralow-specific gravity continuous cable pipe for a self-balancing drilling tool system comprises an outer pipe, an inner pipe, a power supply wire, a signal transmission optical fiber, a signal transmission cable and an ultralow-density filling material;

the outer pipe and the inner pipe are coaxial, a power line, a signal transmission optical fiber and a signal transmission cable are filled in an annular space between the outer pipe and the inner pipe, an ultralow-density filling material is filled in the annular space between the outer pipe and the inner pipe to form a continuous cable pipe whole with a certain elastic bending radius and a mud drilling fluid specific weight, and a channel for transmitting the drilling fluid is arranged in the center of the inner pipe.

And a plurality of armor protection pipes are also arranged in an annular space between the outer pipe and the inner pipe, and the power supply wire, the signal transmission optical fiber and the signal transmission cable are respectively arranged in the armor protection pipes.

The armor protection pipe is fixedly connected with the outer wall of the inner pipe through an armor protection pipe fixing piece.

The armor protection pipe fixing piece comprises a fixing surface and an armor protection pipe limiting surface, the fixing surface is fixedly connected with the outer wall of the inner pipe in a welding mode, and the armor protection pipe limiting surface is matched with the outer surface of the armor protection pipe in a contact mode.

The power supply line consists of an insulating layer, a shielding layer and a wire, wherein the shielding layer is coated on the outer wall of the wire, and the insulating layer is coated on the outer side of the shielding layer.

The signal transmission optical fiber consists of an optical fiber outer protective layer, an optical fiber inner protective layer and optical fibers, wherein the inner wall of the optical fiber outer protective layer is coated with a plurality of optical fiber inner protective layers, and the optical fibers are coated inside the optical fiber inner protective layers.

The signal transmission cable is composed of a signal line protective layer, a signal line shielding layer and signal line wires, wherein the signal line protective layer is internally coated with a plurality of signal line shielding layers, and the signal line shielding layers are internally coated with the signal line wires.

The ultra-low density filling material is a foam substance.

The utility model has the advantages that:

1. the utility model discloses can provide electric energy, signal, data and continue circulation drilling fluid etc. for self-balancing drilling tool system in the pit through the coiled tubing.

2. The utility model discloses a can play the drilling fast and can play the incessant drilling fluid circulation of drilling again of drilling down, reduce the auxiliary time such as playing the drilling down, reduce the drilling tool to the disturbance degree of the wall of a well and because of the drilling fluid stops the interior complicacy that the circulation leads to.

3. The utility model discloses the whole proportion of cable pipe is close with drilling fluid proportion, and theoretical cable pipe length does not have the upper limit under the prerequisite that preparation technology can satisfy the requirement, and the drilling depth of self-balancing drilling tool system only has the relation with the length of cable pipe.

4. The utility model discloses filled the continuous cable pipe blank that self-balancing drilling tool system used, very necessary to the application and the popularization of self-balancing drilling system, it is significant to high efficiency, energy-conserving the drilling.

Drawings

Fig. 1 is an axonometric view of the whole structure of the ultra-low specific gravity continuous cable tube for the self-balancing drilling tool system provided by the utility model.

Fig. 2 is a radial cross-sectional view of the power line of the ultra-low specific gravity continuous cable tube for the self-balancing drilling tool system of the present invention.

Fig. 3 is a radial cross-sectional view of the signal transmission optical fiber of the ultra-low specific gravity continuous cable tube for the self-balancing drilling tool system of the present invention.

Fig. 4 is a radial cross-sectional view of a signal transmission cable of an ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system according to the present invention.

Fig. 5 is an axonometric view of the fixing structure of the armor protection tube of the ultra-low specific gravity continuous cable tube for the self-balancing drilling tool system.

Detailed Description

Referring to fig. 1 to 5, an ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system includes an outer tube 1, an inner tube 2, a power line 3, a signal transmission optical fiber 4, a signal transmission cable 5, an armored protection tube 6, an armored protection tube fixing member 7, and an ultra-low density filling material 8;

the outer pipe 1 is coaxial with the inner pipe 2, a plurality of armor protection pipes 6 are arranged in an annular space between the outer pipe 1 and the inner pipe 2, the armor protection pipes 6 are fixedly connected with the outer wall of the inner pipe 2 through armor protection pipe fixing pieces 7, power supply wires 3, signal transmission optical fibers 4 and signal transmission cables 5 are respectively filled in the armor protection pipes 6, ultralow-density filling materials 8 are further filled in the annular space between the outer pipe 1 and the inner pipe 2, an organic continuous cable pipe which has a certain elastic bending radius and is low in mud drilling fluid proportion and ultra-low in proportion relative to a steel drill pipe is formed, and a channel for transmitting the drilling fluid is arranged in the center of the inner pipe 2.

The power supply line 3 consists of an insulating layer 301, a shielding layer 302 and a lead 303, wherein the shielding layer 302 is coated on the outer wall of the lead 303, the insulating layer 301 is coated on the outer side of the shielding layer 302, and the power supply line 3 is used for providing a power supply for a self-balancing drilling tool system in the well;

the signal transmission optical fiber 4 is composed of an optical fiber outer protection layer 401, an optical fiber inner protection layer 402 and an optical fiber 403, the inner wall of the optical fiber outer protection layer 401 is coated with a plurality of optical fiber inner protection layers 402, the optical fiber inner protection layers 402 are coated with the optical fiber 403, and the signal transmission optical fiber 4 is used for transmitting data detected by a sensor arranged in a self-balancing drilling tool system in the well to a ground control acquisition terminal in real time.

The signal transmission cable 5 is composed of a signal line protection layer 501, a signal line shielding layer 502 and a signal line conducting wire 503, the signal line protection layer 501 is internally coated with a plurality of signal line shielding layers 502, the signal line shielding layer 502 is internally coated with the signal line conducting wire 503, the signal transmission cable 5 has the same action as the signal transmission optical fiber 4 and can be used with the signal transmission optical fiber 4 at the same time, and if the signal transmission optical fiber 4 fails and cannot work, the signal transmission cable 5 can be used as a replacement part of the signal transmission optical fiber 4.

The armor protection tube fixing part 7 is composed of a fixing surface 701 and an armor protection tube limiting surface 702, the fixing surface 701 is fixedly connected with the outer wall of the inner tube 2 in a welding mode, and the armor protection tube limiting surface 702 is in contact fit with the outer surface of the armor protection tube 6.

The ultra-low density filling material 8 is a foam.

Claims

1. An ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system, characterized in that: comprising an outer tube (1), an inner tube (2), a power supply line (3), a signal transmission optical fiber (4), a signal transmission cable (5) and ultra-low density filler material (8);

The outer tube (1) is coaxial with the inner tube (2), and the annular space between the outer tube (1) and the inner tube (2) is filled with a power supply line (3) and a signal transmission optical fiber (4) and signal transmission cable (5), the annular space between the outer pipe (1) and the inner pipe (2) is also filled with ultra-low density filling material (8), forming a near-mud drilling fluid specific gravity with a certain elastic bending radius The whole of the continuous cable tube, the center of the inner tube (2) is provided with a channel for transmitting drilling fluid.

2. The ultra-low specific gravity continuous cable tube for self-balancing drilling system according to claim 1, characterized in that: the annular space between the outer tube (1) and the inner tube (2) is also provided with A plurality of armored protection tubes (6) are provided, and a power supply line (3), a signal transmission optical fiber (4) and a signal transmission cable (5) are respectively arranged inside the multiple armored protection tubes (6).

3. The ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system according to claim 2, wherein the armored protection tube (6) is connected to the inner part through the armored protection tube fixing piece (7). The outer wall of the pipe (2) is fixedly connected.

4. The ultra-low specific gravity continuous cable tube for self-balancing drilling tool system according to claim 3, characterized in that: the armored protection tube fixing member (7) is protected by a fixing surface (701) and armoring The pipe limiting surface (702) is formed, the fixing surface (701) is welded and fixedly connected with the outer wall of the inner pipe (2), and the armored protection pipe limiting surface (702) is in contact with the outer surface of the armored protection pipe (6).

5. The ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system according to any one of claims 1 to 4, characterized in that: the power supply line (3) is insulated by A layer (301), a shielding layer (302), and a wire (303) are composed, the shielding layer (302) wraps the outer wall of the wire (303), and the insulating layer (301) wraps the outer side of the shielding layer (302).

6. A kind of ultra-low specific gravity continuous cable tube for self-balancing drilling tool system according to any one of claims 1 to 4, characterized in that: the signal transmission optical fiber (4) is composed of an optical fiber The outer protective layer (401), the inner protective layer of the optical fiber (402) and the optical fiber (403) are composed. The inner wall of the outer protective layer of the optical fiber (401) is covered with a plurality of inner protective layers of the optical fibers (402), and the inner protective layer of the optical fiber (402) is inside Coated with optical fibers (403).

7. The ultra-low specific gravity continuous cable tube for a self-balancing drilling tool system according to any one of claims 1 to 4, wherein the signal transmission cable (5) is composed of a signal wire A protective layer (501), a signal wire shielding layer (502) and a signal wire conductor (503) are formed. The signal wire protective layer (501) is internally covered with a plurality of signal wire shielding layers (502), and the signal wire shielding layer (502) The inside is covered with signal wire conductors (503).

8. The ultra-low specific gravity continuous cable tube for self-balancing drilling tool system according to any one of claims 1 to 4, characterized in that: the ultra-low density filling material (8) For foam substances.