Continuous liquid supply switching system for pressurization for well drilling, fracturing and coiled tube construction and using method

• Main Authors: ZHANG JICHUAN, LI JIAQI, ZHANG JINHAI, HAN JINJING
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2019
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; PIPE-LINE SYSTEMS; PIPE-LINES; STORING OF DISTRIBUTING GASES OR LIQUIDS; WEAPONS

The invention provides a continuous liquid supply switching system for pressurization for well drilling, fracturing and coiled tube construction and a using method. The continuous liquid supply switching system for pressurization for well drilling, fracturing and coiled tube construction comprises a plurality of cavities sequentially communicating with one another, wherein an automatic valve usedfor on-off control is arranged between every two adjacent cavities; one or more liquid inlet assemblies and one or more liquid outlet assemblies are arranged on each cavity; and a nitrogen pressurization device is arranged on each cavity. According to the system provided with the multiple cavities, the requirements for hybrid liquid supply of different types of liquid (with different viscosities and different liquid inlet rates) and for adding additives and the like are met, and different types of liquid can be automatically combined or separated so as to be supplied in a grouped mode or in ahybrid mode. 本发明提供了种钻井压裂连续