Other

Tianjin University

China National Offshore Oil Corporation

China Offshore Oil Engineering Co.

Xiao Wei Zhang

Wen Jun Zhong

Han Jun Yin

Tao Zhu

Liang Wang

Mingfa Yao

James Lee

Yang Wang

Fang He

Zhong Zhang

Xin Zhong Li

Yuan Lang Cai

Xiao Long Yang

Mo Fan

Shuaiqing Xu

Qian Xiong

Qingyun Tian

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

A common rail electronic control injection system which uses a DME or a low-viscosity fuel similar with DME to inject into a combustion engine, includes a fuel container, a common rail tube, a high-pressure tube, an electronic control injector, an electronic control unit, a high-pressure pump, a working medium case, a reversing component, and a pressure convertor, wherein the pressure convertor includes at least two working components, each working component is divided into a fuel chamber and a working medium chamber by an dividing element, the dividing element can freely deform or move between the fuel chamber and the working medium chamber by pressure effect. The invention avoids the sealing and abrasion problem in the plunger matching portions which is caused by the low-viscosity fuel so as to greatly improve the lifetime and reliability of system.

Electronic control common rail DME injection system

Growing community of inventors

Tianjin, China

Xiao Wei Zhang