Other

China National Offshore Oil Corporation

China Offshore Oil Engineering Co.

Han Jun Yin

Xiao Wei Zhang

Wen Jun Zhong

Liang Wang

James Lee

Yuan Lang Cai

Xin Zhong Li

Xiao Long Yang

Mo Fan

Xiao Hong Zhou

A new pneumatic load transfer and shock absorbing system is disclosed. The pneumatic system includes a layer of air-bags to perform two basic functions during a floatover installation operation: 1) lifting the platform deck from the support to create additional air gaps at the mating surfaces, and the heave motions of the lifted platform deck may be reduced; 2) performing as a shock absorbing device with variable vertical stiffness easily controlled by the air-bag internal air pressure during the mating operation and the separation operation.

Pneumatic load-transfer system and method for mating an integrated deck with a pre-installed platform substructure

A new jacket installation method utilizes inflatable buoyancy members for shallow water jacket installation. Two types of inflatable buoyancy members are introduced: 1) the first type is designed to produce a large water plane area in order to improve the jacket floating stability when it is afloat; 2) the second type is designed to produce net buoyancy when they are submerged under water, This new installation method is able to use a small size crane vessel, with lifting capacity less than the weight of the jacket to be installed, for a large and heavy shallow water jacket.

Shallow water jacket installation method

Growing community of inventors

Tianjin, China

Han Jun Yin