Viscometer used for real-time monitoring in petroleum drilling

Abstract

The invention provides a viscometer used for real-time monitoring in petroleum drilling. The viscometer comprises a drilling liquid tank, wherein at least two rotary viscosimeters of different rotational speeds are installed inside the drilling liquid tank; the rotary viscosimeters are suspended inside the drilling liquid tank through a bracket; a drilling liquid inlet is formed at one end of the drilling liquid tank; a drilling liquid outlet is formed at the other end of the drilling liquid tank; the rotary viscosimeters are provided with outer cylinders; an inner cylinder is installed at each outer cylinder; an angle sensor is installed at the upper end of each inner cylinder; a power transmission member is installed at the outer wall of the upper part of each outer cylinder; and the power transmission member is connected with a motor through a transmission shaft. With the adoption of the viscometer, the viscosity of the drilling liquid can be monitored in real time, and thus the purpose of safely monitoring the drilling in real time is achieved.

Description

technical field [0001] The invention relates to oil drilling monitoring technology, in particular to a viscosity meter for real-time monitoring of oil drilling. Background technique [0002] Real-time monitoring of drilling fluid is the main measure to avoid drilling accidents. Real-time monitoring of the viscosity and shear force of the drilling fluid is an indispensable indicator. The existing drilling fluid viscosity and shear force monitoring method is: manually go to the operation site, take the drilling fluid back to the laboratory, and then use a six-speed manual rotary viscometer for testing. The disadvantage of this method is: because this detection is Intermittent, so when drilling into different formations or when water or oil enters the drilling fluid and causes performance changes, it cannot be detected in time, which poses a greater threat to drilling safety. In addition, due to the temperature change of the drilling fluid, the performance will change. Durin...

AI Technical Summary

Problems solved by technology

The existing drilling fluid viscosity and shear force monitoring method is: manually go to the operation site, take the drilling fluid back to the laboratory, and then use a six-speed manual rotary viscometer for testing. The disadvantage of this method is: because this detection is Intermittent, so when drilling into different formations or when water or oil enters the drilling fluid and causes performance changes, it cannot be detected in time, which poses a greater threat to drilling safety

In addition, due to the temperature change of the drilling fluid, the performance will change. During the process of taking the drilling fluid from the operation site to the laboratory, the temperature of the drilling fluid will change greatly, which will affect the accuracy of the drilling fluid viscosity index.

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