Model and experimental study of fluid permeation characteristics in a deep-water oil and gas tube
Deep-water oil and gas transmission tube is an important facility in deep-water oil and gas field development projects.Accurate simulation of the dynamic process of gas permeation and condensation is one of the key technologies for safe and reliable tube design.Taking the deep-water tube of an offshore oil field in China as the research object,the permeability law of complex gases CH4,CO2,H2S and gas phase water inside the deep-water oil and gas conveying tube was studied.Considering the different factors affecting the permeability of the flexible pipe,such as polymer sealing material,thickness,gas pressure,gas temperature,flow rate,tube interface structure,etc.,the hose geometry model was divided into three spaces:tube fluid,pipe structure and annulus,and the multi-phase flow heat and mass transfer coupling calculation model of composite flexible tube was established.Laboratory scale material and sample tube experiments,prototype pipeline tests and platform field tests were carried out,in which the maximum error between model results and sample tube experiments was 7％,and the maximum error between prototype pipeline tests was 12.3％.The calculation model was consistent with the trend law of field operation results,providing technical support for the design of deep-water pipeline and the safe operation management of tubes.
deep-water tubemult-phase flow heat and mass transfer couplingpermeation model
国家科技期刊平台
NSTL
万方数据
