At present, throughout the world LNG investments are abounding. In particular, the US and the EU are trying to facilitate their security of natural gas supply. For this reason, LNG enables importers to extend their gas suppliers’ portfolio, considering that some producing countries can be reached only via sea transport. LNG will thus increase importers’ choice; at the same time it can widen the...

Pressure in the deep-water pipeline is an important parameter that should be carefully predicted to control natural gas transport petroleum industry. However present methods predict pressure along are complex and time-consuming. Some even ignore formation of hydrate leading inaccurate prediction. In this work, we proposed a model considering reduction radius induced by hydrate. The was validate...

according to gas development in most provinces in recent years and the expansion of gas transfer pipeline in parallel, paying attention to project supply chains and related risks is necessary more than past. due to specific structure of project supply chain based on government regulations, this article is aimed at presenting a model to mitigate risks on projects supply chain in state gas compan...

Safety and failure in gas pipelines are very important in gas and petroleum industry. For this reason, it is important to study the effect of different parameters in order to reach the maximum safety in design and application. In this paper, a three dimensional finite element analysis is carried out to study the effect of crack length, crack depth, crack position, internal pressure and pipe thi...

Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce transport simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a time is lacking attention. In this work, numerical method proposed to investigate effect two-phase gas-liquid leak flow behaviour subsea natural pipeline. The res...

In pipeline-riser systems, pressure fluctuations which result from the formation of large liquid slugs and gas surges due to operational changes or low mass flow rate from production wells and the profile of pipeline-riser systems often lead to trips at the inlet of the separator; and thereby, the problem causes a a loss of the production.In this study, on a sample deep-water oil field off the ...