System and method for determining gas content in drilling fluid

• Main Authors: SONG XIAOYING, BAO YUNJIE, HUANG ZEGUANG
• Format: Patent
• Language: English
• Published: 25.11.2015
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The present invention relates to a system for determining the gas content in a drilling fluid. The system comprises: a container, wherein the container comprises a sealing cavity, a liquid inlet for injecting a drilling fluid into the sealing cavity, a gas inlet for injecting reference gas having the similar or same characteristics with the gas in the drilling fluid into the sealing cavity, and a gas outlet for discharging the reference gas and the gas in the drilling fluid out of the sealing cavity, wherein the reference gas and the drilling fluid can be completely mixed in the sealing cavity; a gas analysis device communicated with the gas outlet of the container in a sealed manner and used for analyzing the components and the contents of the reference gas and the gas in the drilling fluid; a vacuum pump arranged on a pipeline for communicating the container and the gas analysis device; and a calculation device for obtaining the gas content in the drilling fluid. According to the present invention, the influence on the reference gas and the gas in the drilling fluid by the drilling liquid is the same or similar, such that the detection accuracy of the gas content in the drilling fluid can be improved by using the reference gas as the contrast to calculate the gas content in the drilling fluid.