MRP-Q Logging System

MRP-Q Nuclear Magnetic Resonance Logging System> IntroductionMRP-Q logging system is a new generation of logging system which is developed by Crystal Globe Geophysical Research & Services LLC. > Application of MRP-Q·Borehole structure research and formation fluid producing evaluation ;·Oil gas recognition and oil-water interface determining.·Deriving formation parameters through measure MRP basic parameters: ·Formation permeability ·Formation fluid ·Pore size of formation porosity ·Fluid viscosity. ·Formation parameters by direct measurement: ·TPHI ·MPHI ·MBVI ·MFFI>MRP-Q: Measuring nuclear magnetic relaxation through Spin echo method. This system can bring three advantages as below: ·superior signal-to-noise ratio·No requirement for the uniformity of magnetic field·Spin echo Impulse sequenceMRP-Q Interpretation model is similar to NMR porosity, permeability and bound water model. But the Hydrocarbon model is dual water model, combining with conventional logging MRP-Q can detect oil and gas. >MRP-Q Including:·MREE – MR electronic energie. This is an energy storage unit. The unit includes 10 capacitances. Quick-acting charging within every cycle for transmitting a high-frequency impulse. ·MREP – MR electronic plant. Combining with power supply module, stimulate module, transmitter module, transmitter interface module, antenna interface module, pre-amplification module, B1 sensor. Providing high voltage radio-frequency pulse to transmitting antenna and achieving communication with ground system. ·MRMD – MR magnetic detector. Nuclear magnetism sensor with 6’’ external diameter. It consists with relay assembly, host magnet, antenna, pre-polarized magnet. MRMD is a core component part of MRP-Q. It can form gradient magnetic field, transmit RF impulse and receive NMR signal. > Technical Specification>Output indexWork environment: no cased wellDownhole fluid: logging fluid, water, oil, airMeasuring position: middleSensor: RF antennaMaximum echo number: 500Resonant frequency: 9Sensor external diameter: Max 6 feetWithstand voltage: 137.9MpaMaximum well diameter: 42.6cmLimitation of mud resistance bunch: >0.02ohmMud effect: not in measurement rangeDrape: no limitedSignal: radio-frequency signalMaximum logging speed: 24 feet/minMinimum echo interval: 0.6msLength: 13.6m(includes MREP electronic plant)Temperature resistance: 175°Minimum well diameter: 17.8cmMaximum radius of investigation: 42.6cmRangeAccuracyRepeatabilityVertical ResolutionResolution ratioPorosity0-100puMaximum error: 5%/1puPorosity standard error: 1pu24” fixed point measuringT20.5ms-2048ms0.5msCrystal Globe Geophysical Research & Services LLCAddress: 10700 Richmond Ave. STE #220, Houston, TX, 77042Web:www.crystalglobegeo.comTel:713.977.0440Fax:713.977.0440Email:info@crystalglobegeo.com