Method for monitoring sand carrying effect of drilling fluid

Abstract

The invention relates to a method for monitoring a sand carrying effect of a drilling fluid. The method is characterized by sequentially comprising the steps of rock debris collection, rock debris weighing, and data transmission, storage, computation and display. Before being collected, rock debris of the drilling fluid is fully separated through a vibrating screen; a rock debris collector collects the rock debris returned from the vibrating screen in real time and releases the collected rock debris to a weighing sensor regularly; the weighing sensor meters the weight of the rock debris, converts the weight into an electric signal, and transmits the electric signal to a computer. The method has the advantages that through computer display, the sand carrying effect of the drilling fluid is quantized and stored; a rechecking function is realized, and the subjective influence of observation according to the ability and experience of an operator in the prior art is eliminated; an accurate measurement effect is achieved, the sand carrying effect of the drilling fluid can be accurately mastered, and a drilling engineering accident is prevented. The method is applicable to a drilling engineering site in a severe environment, safe, reliable, and low in manufacturing cost.

Description

technical field [0001] The patent belongs to the technical field of drilling engineering, and in particular relates to a method for monitoring the sand-carrying effect of drilling fluid. Background technique [0002] Drilling fluid is called "drilling blood", and the sand-carrying effect of drilling fluid is directly related to the quality of "blood" and the safety of drilling engineering. If the drilling fluid can’t carry the cuttings out of the wellbore in time, it will lead to a lot of complicated situations and even drilling accidents: the friction resistance is too large, the drilling torque is too high, the ROP is too low, the pump pressure is too high, and even the circulation cannot be achieved. , Leakage formation and stuck drill. [0003] At present, the sand-carrying effect of drilling fluid mainly depends on drilling fluid engineers and operators to regularly observe according to personal technical ability and experience. The observation results are not comprehe...

AI Technical Summary

Problems solved by technology

If the drilling fluid can’t carry the cuttings out of the wellbore in time, it will lead to a lot of complicated situations and even drilling accidents: the friction resistance is too large, the drilling torque is too high, the ROP is too low, the pump pressure is too high, and even the circulation cannot be achieved. , leakage formation and stuck pipe

[0003] At present, the sand-carrying effect of drilling fluid mainly depends on drilling fluid engineers and operators to observe regularly according to their personal technical ability and experience. The observation results are not comprehensive and accurate, and it is impossible to accurately understand the sand-carrying effect of drilling fluid, which is likely to cause drilling engineering accidents

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