Non-pipeline Gas And Utilization Program

The non-pipeline natural gas means low productivity natural gas and oil field depletion natural gas. It also points the dispersive small quantity natural gas which obtained during the development process at the oil field, including gas field disperse single well natural gas, oil field associate gas as well as unserviceable small quantity gas from out shore production platform on the spot. They haven't got exploitation and utilization in a long time because of their small quantity production, without consumer on the spot and faraway pipeline transportation system.The paper discusses the utilization current status and developmental trend to the non-pipeline natural gas at home and abroad. The paper makes the research to purification and compressive circuit of raw gas and initiative determines a kind of process engineering of transportation and ration to the CNG. After researching the technique of purification, refrigeration, circulation compress etc to LNG. According to the traits of the non-pipeline natural gas utilization, the paper puts forward three natural gas refrigeration skills which include double expansion machine bloating refrigeration skill, two-stage air shock refrigerating machine bloating refrigeration skill and C3/MR.By comparing scheme and researching parameter the paper thought that C3/MR is the rational scheme which answers to the quality of the natural gas. We come into use the low temperature methanol to deprive carbon dioxide and remnant hydrogen sulphide and molecular sieve absorption exsiccation to dehydrate deeply.The paper establishes the calculating procedure to technical scheme according to the mathematical model to SHBWR equation of state. Selecting type to major equipment and determining technical circuit by calculating technical parameter with computation program and evaluating the economic effect of the plan.