CN104790941A - While-drilling measuring system of hole drilling track for mine - Google Patents

Abstract

The invention relates to a mine drilling trajectory measuring system while drilling, which is composed of in-hole instruments and orifice instruments, and the selected devices are intrinsically safe devices. The working principle is: the 6-DOF sensor in the hole instrument measures the geomagnetic components along the X, Y, and Z axes in the drilling tool coordinate system, and then calculates the rotation matrix through the minimum system of the single-chip computer to obtain the inclination angle and the tool face angle, and The azimuth angle is calculated with high precision for the processing of the interference magnetic field along the axial direction of the drilling tool and the 9-axis data fusion algorithm. The attitude parameters measured by the instrument in the hole are stored in real time by the storage circuit and communicate with the monitoring software on the explosion-proof computer through the cable drill pipe in two directions to display the drilling trajectory in real time. The beneficial effects of the present invention are: the mining drilling trajectory measurement system can measure the attitude parameters in the drilling hole in real time with low power consumption, high precision, and wide range, support two-way communication inside and outside the hole, and the data can be uploaded in real time and stored in a card format. The interface adopts virtual visualization technology and has good human-computer interaction ability.

Description

Mine Borehole Trajectory Measurement System While Drilling

technical field

The invention relates to a measurement-while-drilling system, in particular to a drilling-track measurement-while-drilling system for mines.

Background technique

At present, the measurement-while-drilling system is mainly used in the fields of oil drilling and coal mine underground drilling. Among them, the wireless measurement-while-drilling system is the most widely used in the oil drilling field, and the mud pulse is mainly used as the signal transmission mode, and the corresponding technology is relatively mature; the electromagnetic wave measurement-while-drilling system has a large number of applications in underbalanced drilling, mainly to purchase foreign products. Domestic technology is still in the development stage. However, due to the difficulty of wireless transmission, large structural size, large working voltage and current, and difficulty in coal safety design, the wireless measurement while drilling system is mainly used in the field of underground drilling construction of coal mines.

Providing real-time and accurate drilling attitude angle and controlling the drilling tool accordingly is the key to the drilling tool drilling according to the established trajectory. The drilling attitude system has become the mainstream of the development of the drilling attitude system with its strong autonomy, real-time and anti-interference ability. Especially with the development of micro-inertial sensing technology, it satisfies the needs of users for the drilling attitude system. The requirements of miniaturization, low cost, low power consumption, high precision and space full attitude measurement have become the hot spot of current research.

Most of the few mine-used measurement-while-drilling systems in the market have the following problems: the power supply time is mostly about 20 hours, the storage capacity is about 1000 measurement points, and the attitude measurement is mostly suitable for horizontal well and vertical well measurement. The function is simple, the operation is complicated, and the cost is high. The mine drilling trajectory measurement system while drilling involved in the present invention can well solve the above existing problems.

Contents of the invention

The purpose of the present invention is to provide a simple and compact structure, simple operation process, and complete human-computer interaction software functions in view of the shortcomings of the existing mining measurement while drilling system. Working mine drilling trajectory measurement system while drilling.

In order to achieve the above object, the present invention adopts following technical scheme to realize:

The mine drilling trajectory measurement system while drilling is characterized in that it is composed of in-hole instruments and orifice instruments, and all devices follow the national intrinsic safety standards. The measuring device is composed; the orifice instrument is mainly composed of an explosion-proof computer.

The attitude measuring device is composed of a collar, a cylindrical plug, an O-ring, a sensor group, a measurement circuit board, a base plate, an intrinsically safe rechargeable power pack, a cable joint, and a fixed assembly. The attitude measurement device measures the engineering parameters in the borehole in real time, and transmits them to the hole instrument through the cable drill pipe.

Wherein the explosion-proof computer can process, display and store the data uploaded by the attitude measuring device in the hole, and has the setting of relevant working parameters, fault and alarm self-diagnosis functions. The monitoring software running on the explosion-proof computer uses virtual instrument technology to realize trajectory 3D curve display, drilling trajectory design, dynamic three-dimensional reconstruction display of working conditions in the hole, generation and display of background professional reports and front-end data tables, and parameters of in-hole instruments And the setting of the working mode, the two-dimensional image display of the attitude parameters of the measurement point, the virtual instrument display of the attitude parameters and the display of the local time.

The mine drilling trajectory measurement system while drilling is characterized in that the 6-degree-of-freedom sensor in the attitude measurement device integrates a 3-axis accelerometer and a 3-axis gyroscope, which can measure X, The gravitational acceleration component and rotational angular velocity component of the Y and Z axes, the geomagnetic component along the X, Y and Z axes in the drilling tool coordinate system measured by the 3-axis magnetoresistive sensor, are processed by the 6-degree-of-freedom sensor processing circuit and the 3-axis magnetoresistive sensor The processing circuit is sent to the minimum system of the single-chip microcomputer, and the parameters of the inclination angle and the tool face angle are obtained by solving the rotation matrix, and the interference magnetic field processing and the data fusion algorithm are performed along the axis of the drilling tool, and the azimuth angle parameters with high precision are calculated. The instrument parameter signals in the hole are stored in real time by the storage circuit, and the through-cable joint communicates with the monitoring software on the explosion-proof computer through the through-cable drill pipe to display and further process the drilling trajectory in real time.

The intrinsically safe requirements of the mining drilling trajectory measurement system while drilling are mainly to convert the rechargeable battery pack power supply into an intrinsically safe power supply through the intrinsically safe protection circuit, and provide intrinsically safe power for the measurement circuit board through the switching power supply circuit. The rechargeable battery pack consists of a series of rechargeable battery packs and can be charged online.

Among them, the low power consumption, high precision, and wide range requirements of the mining drilling trajectory measurement system are mainly measured by using high-precision 6-DOF sensors and 3-axis magnetoresistive sensors, as well as measurement circuits and attitude calculation algorithms. accomplish.

The beneficial effects of the present invention are: the mining drilling trajectory measurement system can measure the attitude parameters in the drilling hole in real time with low power consumption, high precision, and wide range, support two-way communication inside and outside the hole, and the data can be uploaded in real time and stored in a card format. The interface adopts virtual visualization technology, has good human-computer interaction ability, and is easy to operate.

Description of drawings

Fig. 1 is the schematic diagram of the principle of the mining drilling trajectory measurement-while-drilling system of the present invention;

Fig. 2 is a schematic diagram of the instrument structure in the hole of the mine drilling trajectory measurement system while drilling of the present invention;

Figure 3 is a schematic diagram of the measurement principle of the measurement circuit board.

Detailed ways

Below through embodiment, the embodiment of the present invention is described in detail in conjunction with accompanying drawing.

Example:

Referring to Fig. 1, the mine drilling trajectory measurement-while-drilling system of the present invention consists of in-hole instruments and orifice instruments. Among them, the instrument in the hole is mainly collected by the 6-DOF sensor and the 3-axis magnetoresistive sensor in the attitude measurement device (3), and the corresponding parameters are collected by the 6-DOF sensor processing circuit (5) and the 3-axis magnetoresistive sensor processing circuit (6). ) to the minimum system (7) of the single-chip microcomputer, and use the rotation matrix solution to obtain parameters such as inclination angle, tool face angle, and azimuth angle. The attitude parameter signal measured by the instrument in the hole is communicated with the monitoring software on the explosion-proof computer (4) through the cable joint (3-8) through the cable drill pipe to display and further process the drilling trajectory in real time.

Referring to Fig. 2, the in-hole instrument of the mine drilling trajectory measurement system while drilling of the present invention includes a measuring drill pipe (1), an attitude measuring tube (2), and an attitude measuring device (3). The attitude measurement device (3) consists of a collar (3-1), a cylindrical plug (3-2), an O-ring (3-3), a sensor group (3-4), and a measurement circuit board (3-5) , Intrinsically safe rechargeable power pack (3-6), base plate (3-7), cable connector (3-8), support ring (3-9), etc. Four threaded holes uniformly distributed along the circumference are respectively drilled on the two cylindrical plugs (3-2) of the attitude measurement device (3), and four uniformly distributed holes are also drilled at both ends of the attitude measurement tube (2). 4 fastening screws fix the attitude measuring device (3) in the fixed attitude measuring tube (2), and the attitude measuring tube (2) is fixed in the corresponding concave position of the measuring drill pipe (1) through the collars (3-1) at both ends. In the groove, the measuring drill pipe (1) is respectively connected with the drill bit and the cable drill pipe through the male and female threaded joints at both ends.

See Figure 3, the measurement circuit board (3-4) consists of a 6-DOF sensor processing circuit (5), a 3-axis magnetoresistive sensor processing circuit (6), a minimum single-chip microcomputer system (7), a switching power supply circuit (8), and power monitoring circuit (9), communication circuit (10), storage circuit (11) and so on. The minimum single-chip microcomputer system (7) is respectively connected with the 6-DOF sensor processing circuit (5), the 3-axis magnetoresistive sensor processing circuit (6), the switching power supply circuit (8), the power supply monitoring circuit (9), the communication circuit (10), the storage The circuit (11) is connected; the communication circuit (10) is connected with the cable drill pipe through the cable joint (3-8); the intrinsically safe rechargeable power pack (3-6) is composed of a rechargeable battery pack and an intrinsically safe protection circuit, The intrinsically safe protection circuit can convert the power supply of the rechargeable battery pack into intrinsically safe power supply, and provide intrinsically safe power supply for the measurement circuit board (3-4) through the switching power supply circuit (8), and the intrinsically safe rechargeable power supply pack (3-6 ) There is a charging cable reserved, which can charge the battery pack without dismantling the instrument at the bottom of the hole.

Although this article uses a lot of measuring drill pipe (1), attitude measuring tube (2), attitude measuring device (3), explosion-proof computer (4), collar (3-1), cylindrical plug (3-2) , O-ring seal (3-3), sensor group (3-4), measurement circuit board (3-5), intrinsically safe rechargeable power pack (3-6), base plate (3-7), communication Cable connector (3-8), support ring (3-9), 6-DOF sensor processing circuit (5), 3-axis magnetoresistive sensor processing circuit (6), single-chip minimum system (7), switching power supply circuit (8) , power monitoring circuit (9), communication circuit (10), storage circuit (11) and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the present invention conveniently; interpreting it as any additional limitation is against the spirit of the present invention.

Finally, it should be noted that it is obvious that the above-mentioned implementation is only an example for clearly illustrating the present invention, rather than limiting the implementation. For those of ordinary skill in the technical field to which the present invention belongs, other changes or changes in different forms can also be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims (5)

1. Mine drilling trajectory measurement system while drilling, characterized in that: it is composed of in-hole instruments and orifice instruments, the selected devices are all intrinsically safe devices, and the in-hole instruments include measuring drill pipe (1), attitude measurement pipe (2), attitude measuring device (3), and the orifice instrument includes an explosion-proof computer (4). 2. The mine drilling trajectory measurement system while drilling as claimed in claim 1, characterized in that: on the two cylindrical plugs (3-2) of the attitude measurement device (3), there are four holes uniformly distributed along the circumference. The two ends of the attitude measurement tube (2) are also drilled with four evenly distributed holes, and the attitude measurement device (3) is fixed in the attitude measurement tube (2) with 4 fastening screws, and the attitude measurement tube (2) ) is fixed in the corresponding groove of the measuring drill pipe (1) through the collars (3-1) at both ends, and the measuring drill pipe (1) is connected with the drill bit and the cable drill pipe through the male and female threaded joints at connect. 3. The mine drilling trajectory measurement system while drilling according to claim 1, characterized in that: the attitude measurement device (3) consists of a collar (3-1), a cylindrical plug (3-2), an O-shaped seal ring (3-3), sensor group (3-4), measurement circuit board (3-5), intrinsically safe rechargeable power supply group (3-6), base plate (3-7), cable connector (3 -8), support ring (3-9), etc.; a layer of rubber shock absorber is embedded in the cylindrical plug (3-2), which plays the dual role of fixing and shock absorption; O-ring (3-2) Embedded on the cylindrical plug (3-2), it acts as a sealing protection; the sensor group (3-4), the measurement circuit board (3-5), and the intrinsically safe rechargeable power supply group (3-6) are connected to the base by screws. On the seat plate (3-5), the two ends of the base plate (3-5) are welded on the cylindrical plug (3-2), and are supported by multiple sets of support rings (3-9); the sensor group (3- 3) Integrate a 6-DOF sensor and a 3-axis magnetoresistive sensor; the measurement circuit board (3-4) consists of a 6-DOF sensor processing circuit (5), a 3-axis magnetoresistive sensor processing circuit (6), and a single-chip microcomputer The minimum system (7), switching power supply circuit (8), power supply monitoring circuit (9), communication circuit (10), storage circuit (11), etc.; the minimum system of single-chip microcomputer (7) and the 6-degree-of-freedom sensor processing circuit (5 ), 3-axis magnetoresistive sensor processing circuit (6), switching power supply circuit (8), power supply monitoring circuit (9), communication circuit (10), storage circuit (11); the communication circuit (10) is connected through the cable connector ( 3-8) Connected with the cable drill pipe; the intrinsically safe rechargeable power pack (3-6) is composed of a rechargeable battery pack and an intrinsically safe protection circuit, and the intrinsically safe protection circuit can convert the power of the rechargeable battery pack into an intrinsically safe power supply , and provide intrinsically safe power for the measurement circuit board (3-4) through the switching power supply circuit (8). The intrinsically safe rechargeable power supply group (3-6) has a charging cable reserved, which can be used without dismantling the instrument at the bottom of the hole. The bottom is for charging the battery pack; one end of the cable connector (3-8) is connected to the communication circuit (10), and the other end is in close contact with the communication end of the cable drill rod through a copper wire spring, and the signal of the communication circuit (10) is passed through the cable drill The rods are uploaded to the Ex computer (4). 4. The mining drilling trajectory measurement system while drilling according to claim 1, characterized in that: the monitoring software running on the explosion-proof computer (4) is characterized by: using virtual instrument technology to realize the 3D curve display of drilling trajectory, drilling Hole trajectory design, dynamic three-dimensional reconstruction display of working conditions in the hole, real-time display of the error between the drilling trajectory and the original design trajectory, generation of two-dimensional curves of various attitude parameters, setting of in-hole instrument parameters and working modes, self-diagnosis of faults and alarms, The foreground report display and background real-time storage of the attitude parameters of the measurement point, the virtual instrument display of the hole bottom parameters and the display of the local time. 5. The mine drilling trajectory measurement system while drilling according to claim 1, characterized in that: the 6-DOF sensor in the attitude measurement device (3) integrates a 3-axis accelerometer and a 3-axis gyroscope, The gravitational acceleration component and rotational angular velocity component along the X, Y, and Z axes in the drilling tool coordinate system can be measured. The 3-axis magnetoresistive sensor can measure the geomagnetic component along the X, Y, and Z axes in the drilling tool coordinate system. The 6-degree-of-freedom sensor processing circuit (5) and the 3-axis magnetoresistive sensor processing circuit (6) are sent to the minimum single-chip microcomputer system (7), and the inclination angle and tool face angle parameters are obtained by solving the rotation matrix, and the axial interference along the drilling tool The magnetic field processing and data fusion algorithm solve the azimuth parameters with higher precision; the attitude parameters measured by the instrument in the hole are stored in real time by the storage circuit (11) and are connected by the cable joint (3-8) through the cable drill pipe and the explosion-proof computer (4) The monitoring software on the computer performs two-way communication, real-time display and further processing of the drilling trajectory.