American Oil and Gas Reporter - October 2020 - 45

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Geochemical 'Fingerprinting'
Characterizes Reservoirs
In Midland Basin Study
By Douglas L. Hardman, Dave Cannon,
Faye Liu, Jiang Wu and Muqing Jin
MIDLAND-The Midland Basin contains one of the world's most prolific
collections of stacked, tight reservoirs, including the Leonard, Spraberry, Dean
and Wolfcamp. As operators transition to infill well "cube" development
involving stacking multiple layers of wells, understanding the vertical drainage,
cross-well communication and their variations through time becomes crucial
in determining play economics and development strategies.
Enabled by innovative analytical and data processing technology, the oil and
natural gas industry has begun to unravel the value of geochemical information
extracted from produced fluid and rock cuttings to address critical reservoir
development questions and identify opportunities. There are thousands of
naturally occurring compounds in sampled fluids that carry a tremendous
amount of information about subsurface fluid flow and reservoir dynamics. By
directly monitoring and data mining the unique geochemical "fingerprints" of
fluid and rock samples, invaluable reservoir characterization and performance
information such as oil-in-place, reservoir quality, drainage rock volume and
well communication can be quantified through time to optimize development
strategies.
New methodologies and integrated workflows allow geochemical information
to be captured at orders-of-magnitude higher resolution and fidelity for
reservoir characterization and production monitoring applications. The
technology reveals both the static (reservoir quality, oil saturation, etc.) and
dynamic reservoir characteristics (fracture growth, drainage height, interwell
communication, etc.) that can directly impact the entire life cycle of
unconventional reservoirs-from well stacking and spacing to completion
design, reservoir management and enhanced oil recovery decisions.

OCTOBER 2020 45



American Oil and Gas Reporter - October 2020

Table of Contents for the Digital Edition of American Oil and Gas Reporter - October 2020

Contents
American Oil and Gas Reporter - October 2020 - Intro
American Oil and Gas Reporter - October 2020 - 1
American Oil and Gas Reporter - October 2020 - 2
American Oil and Gas Reporter - October 2020 - 3
American Oil and Gas Reporter - October 2020 - 4
American Oil and Gas Reporter - October 2020 - Contents
American Oil and Gas Reporter - October 2020 - 6
American Oil and Gas Reporter - October 2020 - 7
American Oil and Gas Reporter - October 2020 - 8
American Oil and Gas Reporter - October 2020 - 9
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