Abstract:Based on the installation mode of lifting mudmat, a new installation process considering the angle of the mudmat into the mud and the position of the equipment above it after sinking into the mud is established. The compensation block is equipped to increase the unilateral water entry resistance and control the mudmat to keep the horizontal mud entry. An angle adjusting block is arranged below the jacket to make up for the inclined angle of the mud layer, so that the equipment above the jacket can keep level. The process of increasing the bearing capacity of traditional underwater mudmat is optimized. The spread wing structure is used to increase the bearing area of the mudmat and prevent sediment from affecting the vision of ROV. The preliminary test results show that the installation process can effectively ensure the equipment above the mudmat and jacket remain horizontal after installation and make it have qualified bearing capacity. The process can not only improve work efficiency and save cost to certain extent, but also provide a feasible scheme for the optimization of underwater mudmat installation process.