A review of research on the application of water jet technology in marine hydrate drilling and mining processes

Abstract:

Natural gas hydrates is a new type of energy， characterized by huge reserves， cleanliness and high efficiency. China is rich in hydrate resources， and the safe and efficient exploitation of hydrates can help realize the transformation of energy structure and the strategic goal of “double carbon”. Hydrate reservoirs are generally characterized by non-rock formation， weak cementation and strong temperature and pressure sensitivity. The application of water jet technology to hydrate drilling process can effectively solve the engineering problems of well borehole collapse and formation destabilization caused by conventional methods. This paper summarizes the existing water jet drilling hydrate technology and water jet drilling tools， and analyzes the influencing factors and breaking mechanism of hydrate-containing sediment breaking process under the impact of water jet. Finally， the research direction for the application of water jet technology in the hydrate drilling process is prospected. This work can provide support for the research of natural gas hydrate development technology in China.