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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kong Lingfu Li Yingwei Liu Xingbin Hu Jinhai |
| Copyright Year | 2007 |
| Description | Author affiliation: Yanshan Univ., Qinhuangdao (Kong Lingfu; Li Yingwei) |
| Abstract | With the six-electrode probe, a two-phase flow measurement system was designed for oil well logging. The whole system consists of the excitation signal generating circuit, the signal conditioning circuit, the data sampling & processing circuit. This apparatus can run into oil production well and interface to a PC on the ground via RS485 bus. Hybrid processor MC56F8323 was the control center of the proposed system. It sampled the up-stream and down-stream fluid flowing signals and cross-correlated in frequency-domain for axial velocity measurement. Simultaneously, MC56F8323 sampled the distributed information of oil-water two-phase flow and estimated the normalized conductivity which is a function of water volume fraction. Especially, the probe was excited by the bidirectional pulse constant-current source, and the traditional complex AC circuit such as demodulation wasn't required, so the circuit simplified and the measurement accuracy improved. The experiments, which were performed in vertical upward oil-water two-phase flow loop, indicate that the measurement error of water volume fraction is plusmn3% when the flowrate of oil-water mixture exceeds 10 $m^{3}/d,$ and the flow axial velocity can resolve the flowrate difference with 2 $m^{3}/d.$ |
| File Size | 573847 |
| File Format | |
| ISBN | 9781424411351 |
| DOI | 10.1109/ICEMI.2007.4351192 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-08-16 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | oil-water two-phase flow Pulse measurements Circuits Well logging the bidirectional pulse constant-current source Petroleum Fluid flow measurement Volume measurement water volume fraction Signal processing Signal generators hybrid processor flow axial velocity Velocity measurement Probes |
| Content Type | Text |
| Resource Type | Article |
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