CN204591258U - A Measuring-While-Drilling Mechanism Applicable to the Screen Pipe Lowering Process - Google Patents

Abstract

The utility model discloses a track-while-drilling measurement mechanism suitable for the screen pipe lowering process, which comprises a hand-held device, a drill pipe and a probe pipe used for drilling while drilling, and is characterized in that the probe pipe is eccentrically arranged in the drill pipe , the probe tube is provided with a wireless bluetooth transmission module, the wireless bluetooth transmission module transmits the drill bit position signal data stored in the probe tube to the handheld device through wireless transmission, and the handheld device is used for time synchronization of the probe tube and Receive, store, draw and display the measurement data of the drilling trajectory. The mechanism provided by the utility model is a breakthrough for the measurement-while-drilling of the drilling construction of the screen pipe lowering process. The overall use is small, light, simple and fast, and can adapt to the drilling construction of the screen pipe lowering process.

Description

A Measuring-While-Drilling Mechanism Applicable to the Screen Pipe Lowering Process

technical field

The utility model relates to the field of coal mine equipment, in particular to a track-while-drilling measuring mechanism suitable for the lowering process of screen pipes.

Background technique

With the development of comprehensive mechanized coal mining technology in my country's coal mines, especially when drilling holes in soft coal seams, drilling holes are prone to collapse. In order to avoid blocking channels such as collapsed holes and collapsed holes after hole formation, some coal mines have adopted the process of lowering the screen pipe for construction. At the same time, in order to improve the accuracy of pre-drilling data for underground geology and ensure safe mine production, the drilling trajectories of underground exploration holes, water exploration and drainage holes, gas drainage holes, and grouting reinforcement holes conform to the design trajectories. accurate measurement. However, the existing measurement-while-drilling technology is to detect the drilling trajectory by lowering the measuring device after the drilling is completed and the drill is lifted, or the measuring device is installed at the center of the ordinary drill pipe, and the signal of the position of the drill bit is transmitted by cable. The data is transmitted to the computer equipment outside the hole. The former is not suitable for drilling in soft and collapsible coal seams. The measuring device is lowered after the drill is lifted, and the depth of detection is often insufficient due to phenomena such as hole collapse and collapse. The center of the drill pipe is equipped with a measuring device and an arrangement with a signal transmission line. The installation is time-consuming and labor-intensive, and the cost is high. Especially, the middle space of the drill pipe is obstructed, which is not conducive to the lowering of the screen pipe. Therefore, the existing coal mine downhole screen pipe lowering process cannot realize the trajectory measurement while drilling, and it is necessary to provide a trajectory measurement while drilling mechanism for the screen pipe lowering process.

Utility model content

In view of this, the technical problem to be solved by the utility model is to provide a track-while-drilling measurement mechanism suitable for the process of lowering the screen tube. It is suitable for the drill pipe and measuring probe used in the screen pipe lowering project. Its measurement is convenient, fast, flexible, high in stability, and can accurately measure while drilling the trajectory of the screen pipe lowering borehole.

The purpose of the utility model is to propose a track-while-drilling measurement mechanism suitable for the screen tube lowering process.

The purpose of this utility model is achieved through the following technical solutions:

The utility model provides a trajectory measurement while drilling mechanism suitable for the process of lowering screen pipes, which includes a handheld device, a drill pipe and a probe tube for measurement while drilling, and is characterized in that the probe tube is eccentrically arranged in the drill pipe .

Further, the diameter of the measuring probe is less than or equal to 20mm, and the length is less than or equal to 80mm.

Further, the drill pipe is also provided with a probe tube fixing frame, and the probe tube fixing frame is provided with a fixing groove, and the probe tube is fixed on the fixing groove of the probe tube fixing frame.

Further, the probe fixing frame is a crescent shape larger than the semicircle of the inner diameter of the drill pipe.

Further, the drill rods include sequentially connected steel drill rods, a first-stage stepped non-magnetic drill rod and a second-stage stepped non-magnetic drill rod.

Further, the crescent-shaped probe fixing frame is arranged between the bottom end of the internal thread of the second-stage stepped non-magnetic drill pipe and the step platform, and the outer arc side of the crescent-shaped probe fixing frame is close to the second On the inner wall of the stepped non-magnetic drill pipe.

Further, a wireless bluetooth transmission module is arranged in the measuring probe.

Further, the wireless bluetooth transmission module transmits the drill bit position signal data stored in the probe tube to the handheld device through wireless transmission.

Further, the handheld device is used to synchronize the probe time and receive, store, draw and display the measurement data of the drilling trajectory.

The utility model has the advantages that: the utility model provides a track-while-drilling measurement mechanism suitable for the process of lowering the screen tube, which adopts a probe tube eccentrically arranged in the drill pipe, and obtains and saves the position and state of the drill bit through the probe tube The data is then transmitted wirelessly to the handheld device through the wireless Bluetooth transmission module, and the handheld device receives, stores, draws and displays the measurement data of the probe time synchronization and the drilling trajectory. The measuring mechanism can directly lower the screen pipe to the designated position through the inner channel of the drill pipe without lifting the drill hole after the drilling is completed, which has no effect on the implementation of the screen pipe lowering process, and at the same time, can adapt to the drilling track measurement of the screen pipe lowering process , to promote the drilling speed, thereby indirectly improving the coefficient of safe production, and the overall use is simple, small and light, fast, accurate, flexible, good stability, and has broad market application prospects.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic diagram of a measuring mechanism of the present utility model;

Fig. 2 is the internal schematic diagram of the second-stage stepped non-magnetic drill rod of the present invention;

Fig. 3 is a schematic diagram of the cross-sectional structure of the second-stage stepped non-magnetic drill pipe A-A when the screen pipe of the present invention is lowered;

In the figure, steel drill pipe-1, first step non-magnetic drill pipe-2, second step non-magnetic drill pipe-3, probe tube-4, wireless bluetooth transmission module-5, probe tube fixing frame- 6. Drill bit-7, screen pipe-8.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present utility model, rather than limiting the protection scope of the present utility model.

Fig. 1 is a schematic diagram of the measuring mechanism of the present utility model, Fig. 2 is a schematic diagram of the interior of the second-stage stepped non-magnetic drill rod of the present utility model; Fig. 3 is a cross-sectional structure of the second-stage stepped non-magnetic drill rod of the present utility model on A-A plane Schematic diagram, as shown in the figure: a track measurement-while-drilling mechanism suitable for the process of lowering the screen provided by the utility model, including a handheld device, a drill pipe and a probe 4 for measurement-while-drilling, characterized in that: the The probe tube 4 is eccentrically arranged in the drill pipe.

Specifically, through the eccentrically arranged probe tube 4 in the drill pipe, it will not interfere with the direct lowering of the screen tube 8 through the inner channel of the drill pipe. Receive, store, draw and display the time synchronization of the probe tube 4 and the measurement data of the borehole trajectory. The measuring mechanism can directly lower the screen pipe to the designated position through the inner channel of the drill pipe without lifting the drill hole after the drilling is completed, which has no effect on the implementation of the screen pipe lowering process, and at the same time, can adapt to the drilling track measurement of the screen pipe lowering process , to promote the drilling speed, thereby indirectly improving the coefficient of safe production, and the overall use is simple, small and light, fast, accurate, flexible, good stability, and has broad market application prospects.

As a further improvement of this embodiment, the diameter of the measuring probe 4 is less than or equal to 20mm, and the length is less than or equal to 80mm, so that the space for the screen pipe 8 to be lowered in the drill pipe is large enough.

In this embodiment, the drill pipe is also provided with a probe fixing frame 6, and the probe fixing frame 6 is provided with a fixing groove, and the measuring probe 4 is fixed in the fixing groove of the probe fixing frame 6. , so that the probe tube 4 can be well fixed and locked in the probe tube fixing frame 6 .

As a further improvement of this embodiment, the probe fixing frame 6 is a crescent shape larger than the semicircle of the inner diameter of the drill pipe, which can make the probe tube fixing frame 6 fixed and stuck in the drill pipe, and also avoid the process of lowering the screen pipe 8 cause excessive interference.

In this embodiment, the drill rods include a steel drill rod 1 , a first step non-magnetic drill rod 2 and a second step non-magnetic drill rod 3 connected in sequence.

As a further improvement of this embodiment, the crescent-shaped probe fixing frame 6 is arranged between the bottom end of the internal thread of the second-stage stepped non-magnetic drill pipe 3 and the step platform, and the crescent-shaped probe fixing frame 6 The outer arc side is close to the inner wall of the second-stage stepped non-magnetic drill pipe 3, so that the crescent-shaped probe holder 6 will not slip along the axial and radial directions of the drill pipe as the drill pipe rotates .

As a further improvement of this embodiment, the measurement probe 4 is provided with a wireless Bluetooth transmission module 5 , which makes signal transmission more convenient and quick, and simplifies the structure of the probe 4 .

In this embodiment, the wireless bluetooth transmission module 5 transmits the signal data of the position state of the drill bit 7 stored in the measuring probe 4 to the handheld device through wireless transmission.

In this embodiment, the handheld device is used to synchronize the time of the measuring probe 4 and receive, store, draw and display the measurement data of the borehole trajectory.

The utility model provides a track-while-drilling measurement mechanism suitable for the screen tube lowering process, which can be measured by the following lowering method, and the specific process includes the following steps:

S1: Set the probe tube eccentrically in the drill pipe;

S2: Collect the state data of the drill bit position through the probe while drilling;

S3: Through the wireless Bluetooth transmission module, the signal data of the position status of the drill bit stored in the probe tube is transmitted wirelessly to the handheld device located outside the hole;

S4: The handheld device is used to synchronize the time of the probe and accept, store, draw and display the measurement data of the drilling trajectory.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (9)

1. A trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process, comprising a handheld device, a drill pipe and a probe pipe for measurement-while-drilling, characterized in that: the probe pipe is eccentrically arranged in the drill pipe. 2. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 1, characterized in that: the diameter of the probe pipe is less than or equal to 20mm, and the length is less than or equal to 80mm. 3. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 1, characterized in that: the drill pipe is also provided with a probe holder, and the probe holder is provided with a fixed recess groove, and the probe tube is fixed on the fixing groove of the probe tube holder. 4. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 3, characterized in that: the probe pipe fixing frame is a crescent shape that is larger than the semicircle of the inner diameter of the drill pipe. 5. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 1, characterized in that: the drill rods include steel drill rods connected in sequence, a first-stage stepped non-magnetic drill rod and a second Stepped non-magnetic drill pipe. 6. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to any one of claims 1-5, characterized in that: the probe fixing frame is arranged in the inner part of the second-stage stepped non-magnetic drill pipe Between the bottom end of the thread and the stepped platform, the outer arc side of the probe tube fixing frame is closely attached to the inner wall of the second-stage stepped non-magnetic drill pipe. 7. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 1, characterized in that: the probe pipe is provided with a wireless bluetooth transmission module. 8. The trajectory measurement-while-drilling mechanism suitable for the screen pipe lowering process according to claim 7, characterized in that: the wireless bluetooth transmission module transmits the drill bit position signal data stored in the probe pipe to the hand-held equipment. 9. The trajectory measurement-while-drilling mechanism applicable to the screen pipe lowering process according to claim 8, characterized in that: the handheld device is used to synchronize the time of the probe pipe and receive and store the measurement data of the drilling trajectory , draw and display.