On November 23, the 2023 Marine Engineering Science and Technology Awards Ceremony and Marine Economy Innovation Development Conference were held in Shenzhen. Three projects led by our college were awarded, including one special prize and two second prizes.

Photos of the winners of the Ocean Engineering Science and Technology Award Conference 2023

  The project that won the special prize was Key Technologies for Safe and Efficient Trial Production of Marine Natural Gas Hydrate Horizontal Wells, led by Professor Wang Zhiyuan. The two projects that received second prizes were Theory of Phase Change Seepage and Enhanced Permeability Pressure Reduction Mining Methods for Marine Mud-Silt Natural Gas Hydrate Reservoirs, led by Professor Hou Jian, and Theory and Key Technologies for Long-Term Stable Cementing of Shallow Formation in Deepwater Oil and Gas Wells, led by Associate Professor Liu Huajie.

  The project Key Technologies for Safe and Efficient Trial Production of Marine Natural Gas Hydrate Horizontal Wells is a phased achievement of the China National Petroleum Corporation's strategic cooperation technology project Foundation and Key Technologies of Marine Natural Gas Hydrate Trial Production Engineering. The project addresses challenges in the trial production of marine natural gas hydrate horizontal wells in China, such as difficulties in controlling wellbore pressure and low gas production from reservoir transformation. It proposes a coupled wellbore-reservoir flow model and parameter solving method considering multiple phase changes of hydrates, invents technologies and equipment for safe control of wellbore pressure in drilling horizontal wells in shallow soft formations with natural gas hydrates, and develops technologies and equipment for segmented multi-cluster volume transformation in horizontal wells to increase production. This project has been successfully applied in the trial production of natural gas hydrates in the South China Sea, helping China achieve two world records in total gas production and daily average gas production in the second round of marine natural gas hydrate trial production projects.

  The project Theory of Phase Change Seepage and Enhanced Permeability Pressure Reduction Mining Methods for Marine Mud-Silt Natural Gas Hydrate Reservoirs innovates multiple-phase change and multi-scale seepage theories for natural gas hydrate reservoirs, proposes new methods for enhancing permeability in mud-silt natural gas hydrate reservoirs, and establishes a dynamic analysis method for the development of mud-silt natural gas hydrate reservoirs focusing on dynamic prediction and well test interpretation. The core technologies have been widely applied in five units including oilfield companies, equipment enterprises, and research institutes, with significant economic and social benefits.

  The project Theory and Key Technologies for Long-Term Stable Cementing of Shallow Formation in Deepwater Oil and Gas Wells establishes a mechanism and evaluation method for the sealing integrity of deepwater shallow weakly cemented formations and proposes a theory system and technical methods for strengthening cementing gradients in weakly cemented formations in deepwater wells. It overcomes key technologies in the low-heat high-strength cement slurry system for cementing natural gas hydrate layers and forms a set of key theories and technical systems for cementing weakly cemented formations in deepwater. The project's achievements have been successfully applied in China's first 1500-meter deepwater self-operated gas field, effectively improving cementing quality.

  The Marine Engineering Science and Technology Award was established by the China Association of Ocean Engineering Consulting in 2011 with the approval of the Ministry of Science and Technology and the National Office for Science and Technology Awards. It is the only national science and technology award in the field of marine engineering in China, aiming to encourage marine scientific and technological innovation and recognize individuals and units who have made outstanding contributions in marine engineering basic research, technology development, and technology application. In the 2023 Marine Engineering Science and Technology Awards, a total of 44 projects were awarded, including three special prizes, 12 first prizes, and 29 second prizes.