Real-time monitoring system for hole bottom parameters in deep hole drilling

A real-time monitoring system and deep hole drilling technology, which are applied in the field of monitoring systems to reduce in-hole accidents, reduce drilling costs and improve drilling efficiency

Inactive Publication Date: 2012-10-17
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

The current drilling parameter monitoring system can only monitor the surface parameters in real time, but in the process of deep hole drilling, the drilling parameters at the bottom of the hole near the drill bit are far fr

Method used

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  • Real-time monitoring system for hole bottom parameters in deep hole drilling

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[0012] The present invention will be described in detail below with reference to the drawings.

[0013] The overall structure of the real-time monitoring system for the bottom parameters of deep hole drilling provided by the present invention is as follows: figure 1 As shown, it is composed of an information acquisition device, a signal transmitting device, a receiving device and a relay station 15. The information acquisition device and the signal transmission device are both installed on the drill pipe at a position close to the drill bit 1 and located at the bottom of the borehole together with the drill bit 1, and move downward as the drill bit 1 drills, thereby real-time monitoring of parameters in the drilling process.

[0014] The information collection device includes a pressure sensor 4, a temperature sensor 6, a pressure torque sub 10 and a flow meter 13 for collecting various drilling parameters. The signal transmitting device includes a collecting circuit 5, a transmit...

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Abstract

The invention provides a real-time monitoring system for hole bottom parameters in deep hole drilling. The real-time monitoring system at least comprises an information collecting device, a signal transmitting device and a receiving device, wherein the information collecting device and the signal transmitting device are arranged on a drilling rod and are positioned at the hole bottom position, the receiving device is positioned on the earth surface, and information collected by the information collecting device can be transmitted to the receiving device for receiving after being transformed by the signal transmitting device; the information collecting device comprises a pressure sensor which is used for collecting various drilling parameters, a temperature sensor, a pressure torsion short joint and a flowmeter; the signal transmitting device comprises a collecting circuit, a transmitting circuit, a battery which is used for supplying power for a circuit and a pair of internal and external insulation short joints; and the receiving device comprises a signal processing unit which is used for receiving, amplifying, filtering, trapping, AD (Analog to Digital) conversing a signal and a display device which is connected with the signal processing unit through a signal line. According to the real-time monitoring system provided by the invention, the drilling accident during a deep hole drilling process can be reduced, and the drilling efficiency is increased.

Description

technical field [0001] The invention relates to a monitoring system for real-time monitoring of drilling parameters at the bottom of a hole during the drilling process. The system can be widely used in the drilling fields of departments such as geology, petroleum, coal, and metallurgy. Background technique [0002] Drilling technology is the only means to obtain deep underground physical geological data and finally delineate ore bodies. Drilling works take place in deep underground, which is characterized by high investment and high risk. As resource exploration and development work shifts to deep areas on a large scale, the working conditions of the drilling process will become more complicated, and it will be more difficult to control the drilling process based on experience alone. Moreover, in-hole accidents that occur from time to time not only seriously affect drilling efficiency but also cause major economic losses. According to incomplete statistics, in recent years,...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/13E21B47/01
Inventor 卢春华蒋国盛吴翔张涛王荣璟
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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