Abnormal pressure in the annulus is one of main risks that threaten safe production gas wells and affect their efficiency. To further improve well management level based on gray system theory new information priority ideology, this study introduced a perspective. First, we considered influence various factors related to change performed grey correlation analysis. Next, established multivariable...

This paper shows the results of a field appliance study hydraulic well method to prevent embankment piping, which is proposed by Japanese Matsuyama River National Highway Office. The large-scale experiment and seepage analysis were conducted examine well. experimental procedure focused on pore water pressure. levels compared with pressure data, used look over variations. Two different types exp...

As worldwide demand of hydrocarbon is growing fast, the oil and gas companies have been forced to explore reservoirs with more hostile conditions, such as high-pressure, high-temperature conditions. Improved technology, material selection and testing procedures are required to overcome the common problems in these conditions. One of the main phases of well construction is cementing job. Appropr...