Abstract: The application provides a determination method and a determination apparatus for conversion efficiency of hydrogen production by wind-solar hybrid electrolysis of water. The method includes that: first test data of a target factor influencing the conversion efficiency of hydrogen production by wind-solar hybrid electrolysis of water is acquired in real time; a neural network model of the conversion efficiency is established; and the conversion efficiency is determined according to the neural network model and the first test data.

Abstract: The present disclosure relates to a method for early kick detection in a drilling system with a drilling fluid loop, comprising: collecting flow-in rate and flow-out rate of a drilling fluid; calibrating the flow-out rate to obtain a calibrated flow-out rate of the drilling fluid; determining a flow rate difference between the flow-in rate and the calibrated flow-out rate of the drilling fluid; and identifying the kicks based on the flow rate difference. The present disclosure also relates to an apparatus for early kick detection in a drilling system with a drilling fluid loop.