Product Description
The RCQ-1 Geophysical Survey Equipment, developed by Rancheng Machinery, is a professional geophysical logging tool designed for oil and gas exploration, formation evaluation, and geological structure studies. Using advanced resistivity logging technology, it accurately measures formation resistivity to assess lithology, porosity, and hydrocarbon potential, helping exploration teams quickly understand the distribution of oil-, gas-, and water-bearing layers. It delivers reliable data in both thick and thin formations, providing essential support for drilling and development planning.
Our electrode system combines gradient and potential electrode configurations with an optimized layout to precisely identify high-resistivity layers and formation boundaries. While conventional resistivity logging can indicate high-resistivity zones, our microelectrode logging takes it further. Microelectrodes are positioned close to the wellbore with much shorter electrode spacing, minimizing the influence of drilling mud. This allows for clear differentiation between permeable and impermeable formations and enables accurate detection of thin layers and sandstone-mudstone interbeds.
By using micro-gradient and micro-potential electrode systems simultaneously, the RCQ-1 can determine formation permeability from amplitude differences and measure the resistivity of the flushed zone as well as the mud cake thickness, providing a more detailed and precise formation analysis. Whether operating under mud drilling conditions or in complex geological environments, the RCQ-1 delivers stable, reliable data to help engineers make informed and efficient decisions.
Technical Parameters
|
No. |
Item |
Parameter |
|
1 |
External Power Supply |
AC 220V ± 20%, 50Hz, 20W |
|
2 |
Working Condition |
Temperature: -20 ºC ~ +40 ºC, humidity ≤ 90% |
|
3 |
AB Power Supply |
6~60V, 0~200mA, AC square wave |
|
4 |
Applicable Electrode System |
A1.6M 0.4N |
|
5 |
Apparent Resistivity Measurement Range |
1-2000Ωm |
|
6 |
Apparent Resistivity Measurement Accuracy |
1% (scale) |
|
7 |
Natural Potential Measurement Range |
±1200mv |
|
8 |
Natural Potential Measurement Accuracy |
1% |
|
9 |
Signal Output |
USB interface |
|
10 |
Depth Measurement |
0 ~ 9999.99 meters |
|
11 |
Depth Measurement Accuracy |
better than 0.1% |
|
12 |
Speed Measurement Range |
0 ~ 9999 meters / hour |
|
13 |
Speed Measurement Accuracy |
better than 5% |
Product Advantages
- Non-destructive measurement: Provides detailed subsurface information directly within the well with minimal environmental impact, ensuring safe and reliable operation.
- High resolution: Detects fine-scale variations in formation resistivity, enabling precise identification of thin layers and interbeds.
- Wide applicability: Suitable for various well types, including oil wells, water wells, and complex geological formations.
- Stable and reliable data: Microelectrodes maintain close contact with the wellbore, minimizing the influence of drilling mud and delivering accurate, repeatable results.
Application & Field Operation
The RCQ-1 is widely used in oil and gas exploration. By continuously measuring formation resistivity, it generates an underground electrical profile that helps quickly distinguish between oil-bearing, gas-bearing, and water-bearing layers. In mineral resource exploration, it identifies the electrical characteristics of ore bodies, allowing operators to determine the position and scale of mineral deposits. In geological structure studies, it helps infer faults, formation changes, and other structural features, providing valuable data for geological evolution analysis. As a piece of advanced Geophysical Survey Equipment, it delivers reliable subsurface interpretation across multiple industries.
During field operation, the logging probe must stay tightly in contact with the borehole wall to avoid measurement errors. Operators should pay close attention to environmental factors such as borehole diameter changes and drilling fluid conditions. Multiple measurements are often required to ensure stable and repeatable data. With the combined micro-gradient and micro-potential electrode system, the instrument produces clear amplitude contrasts between permeable and impermeable layers, enabling accurate identification of thin beds, interbedded formations, and flushed zones.
Operating Tips
- Keep the electrodes firmly pressed against the borehole wall for optimal contact.
- Avoid issues caused by wall contamination or drilling mud; repeat measurements when necessary.
- Data interpretation should be combined with geological knowledge and multi-parameter analysis for the most reliable conclusions.
FAQ
Why do rock formations have different resistivity values?
Resistivity varies due to differences in water content, mineral composition, and fluid salinity. For example, saline water has low resistivity, while dry rocks or mineral-rich formations typically show higher resistivity.
How can I ensure accurate logging results?
Ensure the electrodes have solid contact with the borehole wall, keep the equipment properly calibrated, account for borehole conditions, and perform repeated measurements to improve data consistency.
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