OIL BASED MUD IMAGING TOOL THAT MEASURES VOLTAGE PHASE AND AMPLITUDE
摘要
<p>Oil-based mud imaging systems and methods using phase information. In some embodiments, disclosed logging systems include a logging tool in communication with surface computing facilities. The logging tool is provided with a sensor array having at least two voltage electrodes positioned between at least two current electrodes that create an electric field in a borehole wall, and is further provided with electronics coupled to the current electrodes to determine a differential voltage between the voltage electrodes and two current flows from separate ones of the current electrodes. The differential voltage and current flows are measured as phasors defined by their magnitude and phase. The computing facilities determine borehole wall resistivity from the differential voltage and multiple current flows that include phase and magnitude information, and may display the resistivity as a borehole wall image.</p>
申请公布号
WO2007055784(A2)
申请公布日期
2007.05.18
申请号
WO2006US34644
申请日期
2006.09.06
申请人
HALLIBURTON ENERGY SERVICES, INC.;SAN MARTIN, LUIS, E.;SCHAECHER, WILLIAM, J.;MONROE, MYRICK, L.
发明人
SAN MARTIN, LUIS, E.;SCHAECHER, WILLIAM, J.;MONROE, MYRICK, L.