Optimum Selection Of Tension Leg Platform Based On South China Sea

With the rapid development of global offshore oil to the deep sea, the exploitation of South China Sea has been paid more attention. The motion performances of traditional mobile platforms can not meet the requirements of deep sea operations. Besides that, fixed and dead load platforms will increase their weight and the project cost significantly with the increasing operating water depth. Therefore as the new deep-sea oil production platform adapt to the deep sea-Tension Leg Plat -form (TLP) in the deepwater oil and gas development at home and abroad has been widely used.First, according to the structural characteristics and the overall classification of tension leg platforms, this paper decides to choose three types: Classic TLP, Extended TLP and Mini Seastar TLP. And then, this paper sets these three types in the same environmental conditions, the same weight ratio coefficient and the same mooring systems to compare their motion performances. At last, this paper uses the hydrodynamic calculation software WADAM of DNV/SESAM to calculate these three TLP's dynamic response transfer function and long-term prediction of motion response in the 1,500 meters'deep-water of South China Sea creatively to make analysis of their motion performances and compare their advantages and disadvantages. We get the conclution: the Extended TLP is the optimized model type in the 1,500 meters'deep-water of South China Sea, and we can develop it into the new type with less weight.In a word, this paper will afford some references for our country to make research independently in the optimized selection and structure innovation of TLP forms in deep water of South China Sea perfectly.