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Roberto Rinaldi Geoscientist AFES 2016 Seminar on Cased Hole Logging 20th April 2016 RAPTOR TOOL Case Studies from a Next Generation Pulsed Neutron Tool
16

RAPTOR TOOL - AFES

Dec 04, 2021

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Page 1: RAPTOR TOOL - AFES

Roberto Rinaldi

Geoscientist

AFES 2016 Seminar on Cased Hole Logging

20th April 2016

RAPTOR TOOL

Case Studies from a Next Generation

Pulsed Neutron Tool

Page 2: RAPTOR TOOL - AFES

Largest detector array

LaBr3 detectors

High speed electronics

Fast neutron detector

RAPTOR TOOL

Page 3: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL RAPTOR TOOL

• Single-well, high-fidelity response characterization for CO, N-Vision, and Sigma

• 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

Page 4: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL RAPTOR TOOL

Calibrates the curve value and response sensitivity

• Calibrates the tool sensitivity

• Calibrates the tool to the characterization

• CO

• NVision

Page 5: RAPTOR TOOL - AFES

RHO

B

RHOB_

COR

VCL VCA

LC

VIR

ON

VLig

ht

VSS

T

Kab

s

Keff BVW BVG

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL RAPTOR TOOL

Applications

• CO – Oil Saturation • SIGMA – Water

Saturation • Nvision – Gas Saturation • Lithology Identification • Water Flow • Borehole holdup • Gravel Pack evaluation

Page 6: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

Gas “Saturation” techniques

• Density-Neutron Crossover (OH)

• Sigma (CH)

• Carbon-Oxygen (CH)

• Pulsed Neutron Curve Overlays (CH)

RAPTOR TOOL

Page 7: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 1 RAPTOR TOOL

Are the zones with low Sigma, low CPOR and Low Burst ratio • Gas zones or • Very low porosity?

Page 8: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 1 RAPTOR TOOL

This problem solved by Scheibal (SHELL) et al in 1992 and published in “Formation

Evaluation” 1996 SPE 24737

A simple burst ratio Vs near

burst count overlay

Tight

Gas

Tight

Tight

Tight

Page 9: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 1 RAPTOR TOOL

Tight

Gas

2 detector tool response

Page 10: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 1 RAPTOR TOOL

Page 11: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 2 RAPTOR TOOL

Raptor was used onshore and offshore Adriatic on several

wells with the following objectives:

• Identify the gas-water contact in the formation • Construct the gas saturation profile over the logged intervals

Field Trials of a New Array Pulsed Neutron Formation Evaluation Gas measurement in Complex Completions S. Bertoli, M. Borghi, G. Galli, ENI E&P, A. Oprescu, S. Riley, Weatherford. 11th Offshore Mediterranean Conference and Exibition in Ravenna, Italy, March 2013

Page 12: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 2 RAPTOR TOOL

VIRGIN

LEVEL

PRODUCED

LEVEL

FLUID

LINE

GAS

LINE

GAS

CURVE

Page 13: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 2 RAPTOR TOOL

APPARENT PORE

DENSITY CHANGE

GAS

FLASHING

EFFECT

RAPTOR GAS

SATURATION

COHERENT TO

PNC

Page 14: RAPTOR TOOL - AFES

INTERPRETATION & PROCESSING SERVICES

RAPTOR TOOL: Example 3 RAPTOR TOOL

Figure 4

Mineral Relative sensitivity Merit figure

Sigma MDPN NB

pyrite 26.12308 0.246568 105.9467

siderite 14.55385 0.544351 26.73616

kaolinite 2.4 0.649419 3.69561

chlorite 3.230769 0.722281 4.473009

Quantifying Gas Saturation with Pulsed Neutron Logging – An Innovative Approach Mamdouh N. Al-Nasser, S. Mark Ma, SPE, Nedhal M. Al-Mushrafi, SPE and Ahmed S. Al-Muthana, SPE; Saudi Aramco; Steve Riley, Abel I. Geevarghese, SPE; Weatherford International. SPE 166025

Page 15: RAPTOR TOOL - AFES

RAPTOR TOOL: Example 4 RAPTOR TOOL

Porosity

SHALE

MATRIX

WATER

GAS

10

Sigma

Sensitivity to Shale

Sensitivity to Gas

At 20PU 4 times more

Sensitive to shale than

To gas

Porosity

MATRIX

SHALEWATER

GAS

0 0.5

N-Vision

Sensitivity to Gas

Sensitivity to Shale

At 20PU Sensitivity to ShaleIs 1:4 of sensitivity to Gas

Figure 4

Surveillance of Complex Displacement Mechanisms in Mature Reservoirs to Maximize Recovery Adrian Zett, Mike Webster, Hilary Rose – BP Steve Riley, Darryl Trcka, Nilesh Kadam – Weatherford. SPE 159185

Page 16: RAPTOR TOOL - AFES

QUESTIONS?

References

Differentiation of Hydrocarbon Type in Gulf of Mexico Clastic Reservoirs by Inelastic Pulsed Neutron Capture Data Schebal, J.R.; Welland J.L., (Shell Offshore Inc.); Worrell, J.M. (Atlas Wireline Services); Bayer J.E., Shell Offshore Inc. SPE Formation Evaluation, June 1996

Field Trials of a New Array Pulsed Neutron Formation Evaluation Gas measurement in Complex Completions S. Bertoli, M. Borghi, G. Galli, ENI E&P, A. Oprescu, S. Riley, Weaherford. 11th Offshore Mediterranean Conference and Exibition in Ravenna, Italy, March 2013

Quantifying Gas Saturation with Pulsed Neutron Logging – An Innovative Approach Mamdouh N. Al-Nasser, S. Mark Ma, SPE, Nedhal M. Al-Mushrafi, SPE and Ahmed S. Al-Muthana, SPE; Saudi Aramco; Steve Riley, Abel I. Geevarghese, SPE; Weatherford International. SPE 166025

Surveillance of Complex Displacement Mechanisms in Mature Reservoirs to Maximize Recovery Adrian Zett, Mike Webster, Hilary Rose – BP Steve Riley, Darryl Trcka, Nilesh Kadam – Weatherford. SPE 159185