Product Name:HLAT HIGH RESOLUTION ARRAY LATEROLOG TOOL
Type:
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HLAT
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producer:
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Huanding Energy Services
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Description:
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HALT high resolution array laterolog technology is the main method for the formation resistivity imaging measurement of the open hole logging. It consists of one main electrode, twelve focus electrode which are symmetry placed, twelve supply electrode totally twenty-five electrodes. The circuit is placed inside the sonde.
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INTRODUCTIONTECHNICAL SPECIFICATIONSADVANTAGES
HALT
high resolution array laterolog technology is the main method for the formation
resistivity imaging measurement of the open hole logging. It consists of one
main electrode, twelve focus electrode which are symmetry placed, twelve supply
electrode totally twenty-five electrodes. The circuit is placed inside the
sonde.
HLAT
can acquire six resistivity curve at the same time for one logging, it complete
the measurement from mud resistivity to formation apparent resistivity of
different detective depth, researching the variation of the formation
resistivity and perform the fine division of the formation information. It can
accurately reflect two-dimensional formation model which represent the
formation feature through mathematical inversion, and accurate formation real
resistivity Rt could be obtained, getting the accurate calculation for oil
saturation. The vertical resolution can be improved from 24in to 12in, and the strong
layered ability meet the evaluation requirement for the oil thin layers.
Good
logging curve was got from the contrast test in Shengli oilfield, it is greatly
advanced for the tool feature compared with the common laterolog tool.
Logging environment:
Max. temp.: 175℃
Max. pressure: 140MPa
Shock and vibration:
Accelerated speed:980 m/s2
Shock frequency: once time for axial
direction or horizontal direction
Pulse duration: 11 ms±1 ms
Waveform: half sinusoid
Min. borehole:≥5in
Max. borehole:≤16in
Measurement
range (8 in borehole):
When mud
resistivity Rm=1,0.2~100000Ω·m
When mud
resistivity Rm=0.2,0.2~200000Ω·m
Mud resistivity measurement range: 0.01~5Ω·m
Measurement accuracy ( for the
unlimited, non invaded zone layer):
0.2~1Ω·m ±20%
1~2000Ω·m ±5%
2000~5000Ω·m ±10%
5000~100000Ω·m ±20%(Rm=1)
5000~20000Ω·m ±20%(Rm=0.2)
Detective
depth:50in(Rt/Rxo为10/1)
Vertical resolution: 12in
Dimensions:
O.D. 35/8in, total length 24.1ft
High resolution guarantee 12in thin layer
could be clearly displayed.
The nature of the radial invasion could be accurately
decided by the five different detective depth curves.
Improved the logging efficiency due to
reduce the hard electrode.
Groningen electrode potential hasn’t any
influence due to all the loop come back to the tool shell.
Quick power control
technology meet the formation response.
Various modes can
work at the same time because of the fractional frequency control technology.
Flexible
combination modes could be realized due to the circuit placed inside the sonde.