Product Name：MRIL-P MAGNETIC RESONANCE IMAGING TOOL
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Type：
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MRIL-P
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producer：
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Huanding Energy Services
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Description：
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The Magnetic Resonance Imaging Logging (MRIL) tool is a centralized tool that provides porosity and other petrophysical parameters related to the overall productivity of hydrocarbons in the downhole environment. The tool does this by measuring hydrogen atoms located within a thin-walled, cylindrical-volume concentric to the axis of the tool. The main components of the tool consists of a strong permanent magnet, which produces a gradient magnetic field used to polarize hydrogen atoms, and an antenna which both transmits a Radio Frequency (RF) signal and receives an echo response.
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FunctionCompositionMRIL-P SpecificationsMRIL_P Specifications
The Magnetic Resonance Imaging Logging (MRIL) tool is a centralized tool that provides porosity and other petrophysical parameters related to the overall productivity of hydrocarbons in the downhole environment. The tool does this by measuring hydrogen atoms located within a thin-walled, cylindrical-volume concentric to the axis of the tool. The main components of the tool consists of a strong permanent magnet, which produces a gradient magnetic field used to polarize hydrogen atoms, and an antenna which both transmits a Radio Frequency (RF) signal and receives an echo response.
Composition
? MRIL-PRIME includes three main parts:
l D series Sonde (MRSN)
l D series Electronic Circuit (MREC)
l D series capacitor (MRCC)
? MRIL sonde includes three parts:
l A strong ferrite magnets (main magnet);
l Two stronger magnetic stratum polarization samarium - cobalt permanent magnets;
l RF antenna embedded in the shell of FRP probe.
? MREC includes the following parts:
l Transmission circuit;
l Receiving circuit;
l Circuit to control, calibrate the instruments and do the data communication;
l Supply circuit.
? MRCC provides the extra energy storage function, such as:
l Filter circuit, used to eliminate the interference between MRIL data acquisition and DITS communication;
l Relay on the eliminator, used to solve compatible problems of auxiliary power supply between MRIL and other DITS tools under the supply of W2
Magnetic Resonance Imaging Logging Tool,
MRIL-P with 6 Inch Sonde
DIMENSIONS AND RATIGS
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Maximum working temperature: 350oF/177oC
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Maximum working pressure : 20,000 psi
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Maximum torque limit: 1000 ft-lbs
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Maximum compression limit: 37,000 lbs
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Maximum tension limit: 32,000 lbs
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Sonde OD
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Length
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Weight
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6 in.
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52.88 feet
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1475 lbs
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BOREHOLE CONDITIONS
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Tool diameter
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Borehole Size
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Minimum
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Maximum
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6in.
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7 in.
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16in.
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Open/Cased hole: Open hole only
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Borehole fluids: No restrictions - any type drilling mud or air
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Rugosity effect: No effect if not in sensitive volume
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Mudcake effect: None, if not in sensitive volume
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Mud res. lower limit: 0.02 Ohm*m (with proper fluid excluder)
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Tool position:
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1. Ideal when centerline of tool is close to center line of borehole, +/- 0.5 inch.
2. Centralizers and standoffs are required to provide proper centralization.
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HARDWARE CHARACTERISTICS
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Signal Type: Magnetic resonance signal,
500KHz - 800KHz
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Sensor Type: Tuned RF coil, permanent magnet
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Sampling Rate: Variable by application and/or user
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Telemetry System: DITS Combinable and DITS
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Combinability: TBD
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MEASUREMENT
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Principle
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MeasurementRange
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Porosity:
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MagneticResonance
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0-100 PU
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Free Fluid Index:
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MagneticResonance
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0-100 PU
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BulkVolumeIrreducible:
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MagneticResonance
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0-100 PU
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T2 Distribution
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MagneticResonance
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0.5msec-0.3sec
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Accuracy: +/- 1 PU or 5 % whichever is greater
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Repeatability: 1 PU Standard deviation on porosity measurement
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Vertical Resolution:
6 feet in standard mode
4 feet in high resolution mode
2 feet in stationary mode
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ELECTRICAL SPECIFICATIONS
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Cablehead Voltage: 120 VAC +/- 18 VAC at 60 Hz
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Instrument Current: 400 mA
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Transmitter Power: < 1.5 KW average
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Transmitter Voltage: +/- 300 VDC at cablehead
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Transmitter Current: 3 A maximum
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Minimum Rm Limits
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Fluid
Exclude OD (inches)
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Borehole Size (inches)
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Minimum Rm (ohm-m)
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6.875
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7.875
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0.02
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6.875
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8.5
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0.025
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7.25
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8.5
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0.02
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7.25
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9.625
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0.035
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7.25
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10.75
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0.05
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7.25
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12.25
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0.065
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9.0
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10.75
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0.02
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9.0
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12.25
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0.04
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Note: These values are based on using 4-wire power delivery and a maximum of 25,000 feet of cable.
Magnetic Resonance Imaging Logging Tool,
MRIL-P with 4 7/8 Inch Sonde
DIMENSIONS
AND RATIGS
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Maximum working temperature: 350oF/177oC
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Maximum working pressure : 20,000 psi
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Maximum torque limit: 1000 ft-lbs
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Maximum compression limit: 37,000 lbs
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Maximum tension limit: 32,000 lbs
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Sonde OD
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Length
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Weight
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4 7/8 in.
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50.38 feet
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1275 lbs
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BOREHOLE CONDITIONS
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Tool diameter
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Borehole Size
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Maximum
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Maximum
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4 7/8"in.
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5.75 in.
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6.5 in.
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Open/Cased hole: Open hole only
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Borehole fluids:
No restrictions - any type drilling mud or air
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Rugosity effect: No effect if not in sensitive
volume
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Mudcake effect: None, if not in sensitive
volume
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Mud res. lower limit: 0.02 Ohm*m (with proper fluid excluder)
|
|
Tool position:
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1. Ideal when centerline of tool is close to center line
of borehole, +/- 0.5 inch.
2. Centralizers and
standoffs are required to provide proper centralization.
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HARDWARE CHARACTERISTICS
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Signal Type: Magnetic resonance signal,500KHz - 800KHz
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Sensor Type:
Tuned RF coil, permanent magnet
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Sampling Rate:
Variable by application and/or user
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Telemetry System:
DITS Combinable與DITS
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Combinability: TBD
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MEASUREMENT
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Principle
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MeasurementRange
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Porosity:
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MagneticResonance
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0-100 PU
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Free Fluid Index:
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MagneticResonance
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0-100 PU
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BulkVolumeIrreducible:
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MagneticResonance
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0-100 PU
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T2 Distribution
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MagneticResonance
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0.5msec-0.3sec
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Accuracy:
+/- 1 PU or 5 % whichever is greater
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Repeatability: 1 PU Standard deviation on porosity
measurement
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Vertical Resolution:
6 feet in standard mode
4 feet in high resolution mode
2 feet in stationary mode
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ELECTRICAL SPECIFICATIONS
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Cablehead Voltage: 120 VAC +/- 18 VAC at 60 Hz
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Instrument Current: 400 mA
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Transmitter Power: < 1.5 KW average
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Transmitter Voltage: +/- 300 VDC at cablehead
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Transmitter Current: 3 Amaximum
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Minimum Rm Limits
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Borehole Size (inches)
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6
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Minimum Rm (ohm-m):
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0.012
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Note: These
values are based on using 4-wire power delivery and a maximum of 25,000 feet of
cable.