초록 ▼

Water, oil and gas mixtures such as produced from oil and gas wells are analyzed as to the proportionate content of each component in the total mixture by calorimetric processes in systems which separate the gas from the fluid mixture, withdraw a sample of the liquid mixture and subject the sample a

Water, oil and gas mixtures such as produced from oil and gas wells are analyzed as to the proportionate content of each component in the total mixture by calorimetric processes in systems which separate the gas from the fluid mixture, withdraw a sample of the liquid mixture and subject the sample at a given or determined flow rate to a heat exchange process. The remaining main flow of the liquid mixture is also subjected to a heat exchange process and a heat balance is calculated for the flowstream based on the change in temperature of main liquid flowstream and the change in temperature of the heat exchange medium. The processes are carried out on the main flowstream by interposing a heat exchanger in the flowstream or by reinjecting into the flowstream a measured amount of heat exchange fluid such as separated water or crude oil. The components of the liquid portion of the flowstream may be analyzed by passing a liquid sample through a heat exchanger to measure the heat loss or increase of the sample together with mass flow and volumetric flowmeters or by passing the liquid sample flowstream through a source of microwave electromagnetic energy and measuring the dielectric properties of the fluid mixture.

대표청구항 ▼

A method for determining the flowrate of the liquid component and the gas component of a multiphase gas-liquid mixture flowing from a source of said mixture and wherein the composition of the components of said liquid and said gas is known, comprising the steps of: conducting said multiphase flowstr

A method for determining the flowrate of the liquid component and the gas component of a multiphase gas-liquid mixture flowing from a source of said mixture and wherein the composition of the components of said liquid and said gas is known, comprising the steps of: conducting said multiphase flowstream through a conduit means from said source; measuring the average density of said multiphase flowstream using density measuring means; and determining the flowrate of liquid in said main flowstream by passing at least said liquid of said main flowstream in heat exchange relationship with a heat exchange fluid of known flowrate and composition and determining the flowrate of liquid from the change in temperature of the main flowstream and the heat exchange fluid, respectively.