发明名称 |
ASSESSING A SOLIDS DEPOSIT IN A FLUID-FILLED PIPE BY THE ANALYSIS OF ACOUSTIC TUBE WAVES. |
摘要 |
<p>Tube waves are used to locate and characterize a solids deposit inside a fluid-filled pipe. An acoustic tube wave pulse is transmitted along the pipe. On encountering a solids deposit, the tube wave pulse is perturbed and partially reflected by changes in the boundary conditions between the fluid and the pipe to produce two deposit-modified acoustic waves. One is perturbed wave travelling in the same direction as the tube wave pulse. The other is a reflected wave travelling in the opposite direction. One of these deposit-modified acoustic waves is received to produce an acoustic signal. Accumulated acoustic signals are processed by Fast-Fourier Transform to produce frequency-based digital data. Phase data from the frequency-based digital data is inverted to produce slowness spectrum data. Power data from the frequency-based digital data is inverted to produce attenuation spectrum data. Spectrum data is used to locate a solids deposit in the pipe. Inversion model processing of the spectrum data is used to estimate solids deposit thickness and type.</p> |
申请公布号 |
MXPA04009020(A) |
申请公布日期 |
2005.02.03 |
申请号 |
MX2004PA09020 |
申请日期 |
2003.03.25 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
GALE GUSTAVSON |
分类号 |
G01N29/07;G01N29/22;G01N29/46;G01N29/52;(IPC1-7):E21B47/08;G01V1/30;G01N29/18;G01B17/02;G01V1/40 |
主分类号 |
G01N29/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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