Advances in drilling technology for borehole salt mining

Abstract:

Continuous solution mining of underground salt minerals through drilling technology is the most common and economical method for development of well and rock salt resources. The development of well and rock salt resources with boreholes in China has a long history, and it is the origin of human drilling activities. It is the fastest growing raw salt resource in recent years. Due to the characteristics of water solubility, rheology and modes of occurrence of salt minerals, drilling and mining technology for well and rock salt is very different from that for oil and gas resources. After absorbing modern drilling technology (directional wells and horizontal wells, etc.) and logging technology, the key application technologies such as anti-collision and bypassing, multi-branch wells, Under-pressure drilling, intersection drilling has been developed for well and rock salt mining.