Deepwater drilling pipe monitoring-while-drilling device and method

Abstract

The invention provides a deepwater drilling pipe monitoring-while-drilling device and method. The device comprises a Wi-Fi router, a satellite navigation mobile station, a deepwater drill string engineering parameter measurement-while-drilling nipple, a drilling riser kinetic parameter measurement nipple and a deepwater drilling pipe monitoring-while-drilling and optimized analysis workstation; the Wi-Fi router is used for providing a wireless local area network to the deepwater drilling pipe monitoring-while-drilling device, the satellite navigation mobile station is arranged on a drilling platform, the deepwater drill string engineering parameter measurement-while-drilling nipple is arranged at the upper end of a drill string and used for measuring the tension-compression stress, torque, bending moment, displacement, rotating speed, three-dimension acceleration, drilling fluid pressure and temperature of the upper portion of a drilling riser, and the deepwater drilling pipe monitoring-while-drilling and optimized analysis workstation is arranged on the drilling platform and used for drilling pipe dynamic response real-time analysis, operation parameter analysis and pipe fatigue analysis. According to the deepwater drilling pipe monitoring-while-drilling device and method, the deepwater drilling pipe state can be monitored comprehensively.

Description

technical field [0001] The invention relates to the technical field of offshore oil and gas drilling, in particular to a monitoring device and method for deep-water drilling tools while drilling. Background technique [0002] The stress state of deepwater drilling pipes (drill string and riser) is very complicated and harsh. The top of the deepwater drilling pipe is subjected to the pulling (tensioning) force of the motion compensation equipment; the upper part is subject to the combined action of the random action of the marine environment loads such as wind, waves and currents and the movement of the platform, causing the coupling contact between the drill string and the riser; The lower end of the water pipe is hinged by a flexible joint and connected to the wellhead; the drill bit at the lower part of the drill string is subjected to the force of the formation, the contact force between the well wall and the drill string, and there is also a fluid-solid coupling force be...

AI Technical Summary

Problems solved by technology

Among them, the independent monitoring system uses its own battery pack to supply power for measurement, and then stores the measured data in the memory of the system. After the riser is recovered, the data is downloaded from the memory and analyzed. This method is low in cost, but cannot achieve real-time monitoring. Monitoring; the acoustic monitoring system uses underwater acoustic communication technology to realize wireless transmission of measured data, but this technology has problems such as high power consumption and short life cycle; the real-time monitoring system uses cables for power supply and data transmission, which has the characteristics of real-time reliability , but the line layout will prolong the running time of the riser, and the line may be damaged, making it difficult to implement

[0006] The existing deepwater drilling pipe measuring devices can measure parameters including stress, torque, acceleration, rotation angle, pressure and temperature, etc., but they cannot collect the important motion parameters of deepwater drilling pipes——displacement, let alone obtain the deepwater drilling string and Laws of Mutual Coupling Between Risers

Since the deepwater drill string and the riser are connected to the drilling platform through the heave motion compensation device, the horizontal movement of the top of the drill string and the riser is synchronous with the drilling platform, but the vertical movement is not synchronous Therefore, the movement of the drilling platform cannot represent the movement of the upper part of the deepwater drilling pipe

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