The role of seismic in unconventional reservoir …oticdallas.com/2018downloads/TGS.pdf · Market...

The role of seismic in unconventional reservoir development

Mike Perz

Director, Technology & Innovation, Multi-client, Onshore

February 23, 2018

Outline

• Introduction

• Seismic’s adaptation to the unconventional world

• Examples of seismic applications

• Future trends

©2018 TGS-NOPEC Geophysical Company ASA. All rights reserved 2

Outline

• Introduction



• Future trends


This is TGS

The worlds largest geoscience data company,known for its asset light – multi-client business model

Global multi-client data librarycovering frontier & mature basins

Main offices: Oslo and Houston

Regional offices: London, Perth, Calgary,Singapore, Mexico City and Rio de Janeiro

~600 employees

Traded on Oslo Stock Exchange,part of OBX Index (25 most liquid shares at the OSE)

Market Cap: ~$2.1 billion

Leading global provider of multi-client seismic and geoscience data

Calgary

Singapore

Perth

Houston

London

Oslo

Rio

Mexico


The Contract Model : A geophysical services business

The Multi-client Model: An investment business

TGS identifies project opportunity

TGS secures customer

commitment

TGS invests in and controls project

TGS Licenses data to multiple clients

Client tenders for serviceClient awards and funds

projectClient owns data

Exploration InsightFlexibility to select

appropriate technology

The right data,

in the right place,

at the right time

Invest & deliver

The Multi-client Model


Duvernay

6

• In the top 5 North American plays

• The formation is rich in condensate

• Advanced Seismic attributes being fully utilized

SCOOP&STACK Utica

• Well understood reservoir dynamics and geological characteristics

• The second most active US play

• Acceleration of M&A activity

• Well positioned with proximity to demand centers

• Continuous growth of region infrastructure

• Improving natural gas market

Core Positions in Four Premier Basins in North America

2016

2012

OilCum. production (BOE)

©2017 TGS-NOPEC Geophysical Company ASA. All rights reserved

• Largest petroleum producing basin

• Structurally and stratigraphically complex

• Attracted nearly one quarter of global M&A spent 2016

Permian - Delaware

TGS’ SCOOP/STACK seismic surveys


TGS’ Permian seismic surveys


Outline

• Introduction



• Future trends


The halcyon days of seismic: Canadian Foothills example


Seismic’s adaptation to an unconventional world

• Dense spatial sampling

• High vertical and lateral resolution

• Preservation of amplitudes

• Preservation of azimuthal signal variation

• High quality near-surface characterization

• Effective noise suppression


Early 2000’s

Today

==source

==detector

1000 ft









Top Meramec

Top Woodford

Resolution threshold @ Meramec: 80 ft

Resolution threshold @ Woodford: 110 ft

Meramec thickness

Woodford thickness

Processing snapshot: raw data


Blanchard survey in SCOOP/STACK

Frequency (Hz)

0 20 40 60 80 100 120

First arrival + reverberatory train

Shear arrival + reverberatory train

Guided surface waves==“ground roll”Air blast

Processing snapshot: raw data



Frequency (Hz)

0 20 40 60 80 100 120

Processing snapshot: after stage 1 denoise



Frequency (Hz)

0 20 40 60 80 100 120

Signal

Difference: input minus output



Frequency (Hz)

0 20 40 60 80 100 120

No visible signal in

difference!!

Outline

• Who are we?



• Geosteering

• Future trends


Seismic and geosteering: Barnett Shale example


R. Mott et al., 2015 SEG Annual Mtg.

Outline

• Who are we?

• Seismic method tidbits


• Geomechanical property estimation

• Future trends



Predicted Observed Misfit

Incident angle

0 40

Elastic parameters (Vp/Vs)

z

x

Vp/Vs from well

Find elastic

parameters

which minimize

misfit between

observed and

predicted dataInput pre-stack dataInversion data

Pre-stack inversion of the Blanchard 3D


Young’s Modulus*density with curvature overlay

Strong correlation

between curvature

swarms and high

values of Young’s

Modulus

Outline

• Who are we?



• Fracture (or horizontal stress anisotropy) estimation

• Future trends


Fracture detection: Eagle Ford example


W. Keller et al., 2017 SEG Annual Mtg.

Overlay of Vint_fast with production

Outline

• Who are we?


• Important seismic use-cases in unconventionals

• Future trends


Outline

• Who are we?



• Future trends• Land pre-stack depth migration• Low-frequency acquisition• Acquisition via compressive sensing• Big data/analytics

• Detect correlations between seismic attributes and production??


Setting the stage: Washout Creek 3C3D, Western Canada


M. Perz et al., 2016 SEG Annual Mtg.

24 months’ production*

Step 1: Generate attribute volumes on Loyal 3D (SCOOP/STACK)


• Pre-stack PP inversion• E*

• Zp,Zs

• Vp/Vs

• *,*

• Pre-stack joint PP-PS inversion• E

•

• Zp,Zs

• Vp/Vs

• ,

• etc…

Step 2: Select wells with production localized to interval-of-interest


Meramec

Woodford

Hunton

Base Hunton

Use perf data, formation

tops from TGS well

database

Step 3: Extract average attribute data around wellbore


E*



234.1

160.3

112.7

Production data

500.6 145.1876.2 330.6



234.1

160.3

112.7

500.6 145.1876.2 330.6

Detect correlation via artificial intelligence, statistics

Where

to drill

next

Summary

• Unconventional paradigm imposes some exacting requirements on seismic methods

• Seismic adds significant value in unconventional E&P

• Geosteering

• Geomechanical property estimation (and other elastic parameters)

• Fracture (stress anisotropy) detection

• Ongoing innovation and improved communication should help elevate seismic’s position in value chain


Thank you

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