Emulsions are difficult to transport in the oil and gas industry due to its water content and high viscosity property, thus a need arises to break these emulsions down into lighter emulsions that would make it a lot m...Emulsions are difficult to transport in the oil and gas industry due to its water content and high viscosity property, thus a need arises to break these emulsions down into lighter emulsions that would make it a lot more suitable for transportation. In this research, biodiesel was synthesized and used to break down relatively viscous emulsion samples into lighter emulsion samples. An apparatus was designed with the aim of determining the flowrate of four different samples in different proportions and compositions: 80% oil and 20% water (sample A), 90% sample A + 10% of biodiesel by volume (sample B), 75% of sample A + 25% of biodiesel by volume (sample C), 60% of sample A + 40% biodiesel by volume (sample D). The results showed that it was possible to significantly increase the flow of emulsions by injecting biodiesel, which was acted as a surfactant, resulting in the lowering of the surface tension of the emulsion sample. The relevance of this research work is validated as it proffers a solution to the transportation of heavy oil and emulsions from all over the world possessing the non-Newtonian flow behavior, which results in serious problems related to its transportation.展开更多
Accurate prediction of the flow rate of horizontal gas well is necessary for economic feasibility,planning and development of gas field.Most of the early models assumed that the production from the horizontal well is ...Accurate prediction of the flow rate of horizontal gas well is necessary for economic feasibility,planning and development of gas field.Most of the early models assumed that the production from the horizontal well is infinitely conductive except few recent models.Some recent models reported in the literature for estimating flow rate in horizontal well where the pressure losses due to friction along horizontal drain hole was considered.An improved model that checks the impact of all possible well bore pressure losses on gas production rate of horizontal well is reported.The neglected impact of well bore pressure losses due to fluid accumulation and kinetic energy in the past models is thought to be a conceivable reason for the inconsistency between computed rates from the models and rates got from production tests.The new model was validated using the same field contextual investigation utilized by Guo et al.and outcome got from the new model yields more satisfactory results.A more realistic results that evident all flow phenomena in gas well include the initial unsteady,pseudo-steady and steady state flow condition hence flow rate at any given production time has been established for flow of gas along horizontal well.The outcomes of the study demonstrate that the percentage deviation of the new model at steady state flow condition is less than 5.0%compared with 11.05%acquired from Guo et al.model following by 259.7%from Furui's model,and 1118.2%got from Joshi's model.This work gives field operators a precise and helpful device for prediction and assessment of production in a gas horizontal well.展开更多
文摘Emulsions are difficult to transport in the oil and gas industry due to its water content and high viscosity property, thus a need arises to break these emulsions down into lighter emulsions that would make it a lot more suitable for transportation. In this research, biodiesel was synthesized and used to break down relatively viscous emulsion samples into lighter emulsion samples. An apparatus was designed with the aim of determining the flowrate of four different samples in different proportions and compositions: 80% oil and 20% water (sample A), 90% sample A + 10% of biodiesel by volume (sample B), 75% of sample A + 25% of biodiesel by volume (sample C), 60% of sample A + 40% biodiesel by volume (sample D). The results showed that it was possible to significantly increase the flow of emulsions by injecting biodiesel, which was acted as a surfactant, resulting in the lowering of the surface tension of the emulsion sample. The relevance of this research work is validated as it proffers a solution to the transportation of heavy oil and emulsions from all over the world possessing the non-Newtonian flow behavior, which results in serious problems related to its transportation.
文摘Accurate prediction of the flow rate of horizontal gas well is necessary for economic feasibility,planning and development of gas field.Most of the early models assumed that the production from the horizontal well is infinitely conductive except few recent models.Some recent models reported in the literature for estimating flow rate in horizontal well where the pressure losses due to friction along horizontal drain hole was considered.An improved model that checks the impact of all possible well bore pressure losses on gas production rate of horizontal well is reported.The neglected impact of well bore pressure losses due to fluid accumulation and kinetic energy in the past models is thought to be a conceivable reason for the inconsistency between computed rates from the models and rates got from production tests.The new model was validated using the same field contextual investigation utilized by Guo et al.and outcome got from the new model yields more satisfactory results.A more realistic results that evident all flow phenomena in gas well include the initial unsteady,pseudo-steady and steady state flow condition hence flow rate at any given production time has been established for flow of gas along horizontal well.The outcomes of the study demonstrate that the percentage deviation of the new model at steady state flow condition is less than 5.0%compared with 11.05%acquired from Guo et al.model following by 259.7%from Furui's model,and 1118.2%got from Joshi's model.This work gives field operators a precise and helpful device for prediction and assessment of production in a gas horizontal well.
