Production Logging is the procedure of measuring and monitoring certain fluid properties over the life of the well, which can be useful in identifying production and mechanical problems, generating flow profiles, monitoring change in fluid saturation, and for comparison with expected well performance .The ultimate purpose of which is to provide information which can aid in maximizing oil recovery, extending the life of the well, and reducing operating costs
Production logging (PL) of oil and gas wells faces numerous challenges related to the complexity of multiphase flow condition and sensitivity of the downhole environment. Mixtures of gas, oil and water, flowing in well both in open hole and cased hole will present bubbles, droplets, mist, segregated waves and slug structures. Flow patterns change radically depending on the relative proportions of phases, their velocity, densities, and viscosities as well pipe dimensions and well deviations.
New developments in sensor miniaturization of sensors allowing colocation of various measurements within inches with flexible option for selecting the application from pure production logging it to behind the measurements (fluorescence, acoustic, conductivity) can yield new information about flow form a well including oil typing, asphaltene detection, non-mechanical velocity determation in additional to traditional production logging data.
Features:
- Four Bowspring Centralizer arms with wear pads. Max opening of 7 inches
- Dual Modules or more can be connected in an offset.
- 10 times reduction in tool string length as compared to existing technology
- Two Probes per arm (Eight Probes per tool module) + Eight Doppler Transducers + RTD Fast Response Temp Sensor + MEMS Pressure Sensor + RB/Inclination Sensor
- Plug & Play Probes
- Data is compatible with most PLT Interpretation Packages Micro Electro-Mechanical Sensors – MEMS technology (Patent, Fast Response, High Accuracy and High Resolution
- Sensors can be mounted independently from each other and easily interchanged to adapt the tool to address the well specific challenges and meet the objectives of the surveillance program.
- Digital Power is integrated into each individual sensor (Smart Sensor) provides calibrated data output which highly facilitates the interpretation.
- Adjustable Probe Lengths to sense different sections of the pipe from wall to center
- All Probes have the same mechanical packaging and connected to the same digital bus
- Can be deployed on Slickline, Wireline, Coiled Tubing, Drill pipe, Tractor, and Fiber Rod
OPTICAL
- Gas Holdup
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design
- Liquid/gas discrimination from refractive index
- Integrated Coupler
- Dynamic thresholds
- Embedded computation of gas hold ups and bubble counts
ELECTRICAL
- True Conductivity Measurement
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design & Patented Technology
- Embedded computation of water hold ups and bubble counts
- Reliable from fresh water to high salinity brine
DOPPLER
- Velocity Measurement with NO MOVING PARTS
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design
- Computation of velocities from the Doppler shift
- Qualitative granulometry index of fluids from the
- Doppler amplitude
- Detection of very early fluid entries
MICRO SPINNERS
- Velocity Measurement
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design
- Min velocity threshold 2 cm/sec
- Max spinning rate 10 m/sec
- Smart magnetic detection
ULTRA FAST FLUID TEMPERATURE
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design
- Accuracy 0.1ᵒC
- Resolution 0.01ᵒC
- Detection of very early fluid entries
MEMS™ PRESSURE
- Patent Technology
- 302ᵒF (150ᵒC) – 15kPSI
- Robust Design
- Accuracy 1 PSI
- Resolution 0.01 PSI
- Metal to Metal Seal
Reservoir Evaluation Tool is standalone formation evaluation technology which can deliver the following:
- Saturation
- Porosity
- Relative Density,
- Clay Volume
- Litho information
- Qualitative Permeability
Features:
- Dual Physics (Neutron & Gamma)
- Source does not activate pipe
- Can be run in memory and real time
- Standalone measurement
- Flexible deployment methods – SL, E-Line, CTU, Tractor, Pipe-conveyed, Drop-tool.
- Can be logged through multiple strings of pipe
- Depth of investigation ~ 0.9 m