raptor - petroleum clubpetroleumclub.ro/downloads/gasforum/darryl_trcka-weatherford.pdf · raptor a...

RaptorA New High-Technology, High-Value Pulsed Neutron Measurement from WeatherfordPulsed Neutron Measurement from Weatherford

Dr. Darryl TrckaSenior Research Scientist

© 2012 Weatherford. All rights reserved.© 2012 Weatherford. All rights reserved.

Raptor Interpretive Product Manager

1964Lane Wells

© 2012 Weatherford. All rights reserved.© 2012 Weatherford. All rights reserved. 2

1969“Slim tool”

“Through tubing”Through tubing

SchlumbergerBaker Hughes

Halliburton


2003Baker Hughes


2010Weatherford

Raptor

© 2012 Weatherford. All rights reserved.© 2012 Weatherford. All rights reserved. 5Casedhole Reservoir Evaluation Tool (CRE)

2010Weatherford

Raptor


Why four detectors?For Gas Saturation Measurements (We already know that.)

Water-Oil Response Line

Gas Response Line

Raptor 5-Detector Tool


Why four detectors?

Wet Response Line

Raptor 4-Detector ToolStandard 3-Detector Tool

Gas Response

Standard 3-Detector ToolRaptor 5-Detector Tool


Standard 2-Detector Tool

Raptor-COWhy use four detectors?

• We have four detectors instead of two. Which do you use for the CO measurement?


Raptor-Sigma Why use four detectors?

• We have four detectors instead of two. Which do you use for the sigma measurement?g


Hardware Summary

• Larger Detector Array

Senses more formation volume – Most sensitive tool in the industry

• New Detector Type

Fastest detector in the industry – High count rates, faster loggingy g , gg g

Brightest detector in the industry – Less noise, more signal

• Sensitivity Calibration System

Multi-point calibrator – More accuracy, more confidence

• EfficiencyEfficiency

Combinability – PN+Bond+PL

Memory Operation – Field Test in 2013


The Road to High-Value Petrophysical Solutions

High-Value Answer Products

Distributed Analysis

Production Petrophysics

Characterization

Algorithms

© 2012 Weatherford. All rights reserved.© 2012 Weatherford. All rights reserved. 12Instrumentation

New Algorithm Development

• Raptor-CO

New formation-view technique – Proof that the tool is seeing the formation

New shale and mineralogy handling – Lime, dolomite, sand, shale

• Raptor N-Vision Measurement (Gas Saturation Measurement)

Measurement method not based on CO or Sigma

Saturations are determined by measuring pore fluid density:

Basis for the Raptor-Gas product for gas saturation p p g

• Raptor-Sigma

Diffusion corrected sigma (available 2012) – High accuracy sigma



Di t ib t d A l i




Characterization

Algorithms


Characterization Problems in Artificial Pits

• Most conditions are impossible to characterize in artificial formation pits:

– Gas formations– Gas behind tubing– Foam cement– Formation gas and oil of variable density– Tubing and packers– EOR processes (floods, WAG, SAGD, CO2, N2)– Condensate– Washouts

D illi fl id– Drilling fluids– Screens– Gravel packs– Blast joints

Horizontal wellbores– Horizontal wellbores– High-angle wellbores– Invasion effects– Partial saturation values– Partial or mixed borehole holdup values


Partial or mixed borehole holdup values– Coning/cresting

Raptor Characterization with Monte Carlo Modeling

• Single-well, high-fidelity response characterization

– Each well is characterized for:

• Hole size

• Casing size, weight

• Sand, Lime, Dolomite

• Borehole fluid density/salinity

• Formation oil density

• Tubing strings

• Tubing/annulus fluids






Characterization

Algorithms


Example – Measuring Formation Gas Saturation in a Problem Gas Reservoir

• Problems

– Complex completions (logging behind production tubing in largeComplex completions (logging behind production tubing in large boreholes)

– Mixed salinity: sigma is unreliable

– Variable shales

– We want:

• Gas saturation

• Identification of thin bed pay

• Raptor advantages?


Advantage #1: InstrumentationRaptor Gas Sensitivity

Wet Response Line

Raptor 4-Detector ToolStandard 3-Detector Tool

Gas Response

Standard 3-Detector ToolRaptor 5-Detector Tool


Standard 2-Detector Tool

Advantage #2: CharacterizationRaptor N-Vision High-Fidelity Gas Response Characterization


Advantage # 3: CalibrationCalibration of Tool Sensitivity and Characterization

T100 N-Vision Calibration

Calibration of three tools


Advantage #4: Algorithms and EquationsAnalytical Shale Calibration and Handling


Upcoming Publication of Results






Characterization

Algorithms


Raptor –Not just high-technology by Weatherford standards, high technology by world standards

D D l T k

© 2012 Weatherford. All rights reserved.© 2012 Weatherford. All rights reserved.

Dr. Darryl TrckaSenior Research Scientist Raptor Interpretive Product Manager

raptor - petroleum clubpetroleumclub.ro/downloads/gasforum/darryl_trcka-weatherford.pdf · raptor a...

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