1,720,963 research outputs found
Is it possible to reduce the cost (and increase the accuracy) of multiphase flow meters?
No full textIn the present paper, the development of a low cost multiphase flow meter, designed for an oil field where it seemed advisable to avoid the use of radioactive sources, is illustrated. This meter combines the measurements of the pressure differential through a multiphase oritice and in a vertical tube. When required, the composition of the liquid- liquid mixture can be determined with a semi-continuous sampling method. Before installation, a set of tests, performed in a laboratory where it is possible to operate at actual field conditions, allowed the development of two semi-empirical equations that enable an accurate evaluation of the gas and liquid flow rates
Axial flow cyclone with a variable internal arrangement for abating liquid or solid particulate from a gas stream
No full textAxial Flow Cyclone of Large Diameter for Abating Liquid or Solid Particulate from a Gas Stream
No full text
Measurement of liquid film distribution in near-horizontal pipes with an array of wire probes
No full textA test section consisting of a circumferential array of conductance probes has been developed to measure the thickness distribution around the pipe wall of a liquid layer flowing in near horizontal pipes. When the film thickness is known, the array can be employed to measure the local film flow rate by injecting a high conductivity tracer into the liquid flowing at pipe wall.The test section consists of a short pipe made of a non-conducting material installed in a flow rig designed to operate at an appreciable pressure (40 bar). The flow loop is made of metallic pipes connected to the electrical earth. The conductance probes are made of three parallel, rigid wires spaced along the flow direction and are used to measure the height or the electrical conductivity of the liquid layer. The three-electrode geometry is aimed at minimizing current losses toward earth. The simultaneous operation of all the probes of the array, without multiplexing, allows a substantial reduction of current dispersion and a good circumferential resolution of film thickness or conductivity measurements. The probe geometry may generate an appreciable disturbance to the gas-liquid interface. This aspect of the proposed method has been studied with an experimental and numerical investigation relative to free falling liquid layers
- …
