DJH Energy Consulting
Dan J. Hartmann
P.O. Box 271
Fredericksburg, Texas 78624
210-508-7455
djhec@ktc.com
Dan J. Hartmann
P.O. Box 271
Fredericksburg, Texas 78624
210-508-7455
djhec@ktc.com
SUBTLE (BY PASS) PAY EVALUATION
INTRODUCTION
The current state of the industry is burdened with inadequate reserve replacement, diminished exploration
and recovery of less than 50% of existing oil place. It is imperative that we extract the absolute maximum
amount of oil from each asset by:
1. Developing and applying the best recovery technology.
2. Learning to interpret and optimize the available data.
3. Recognizing pay behind pipe and by pass pay.
OBJECTIVES
This session is designed to optimize the available data and to recognize subtle pay. Participants will:
1. Be introduced to the models and reservoir attributes that aid in the recognition of subtle pay
opportunities in open well bore and cased well bore.
2. Become familiar with the well bore sensors, the data generated and how to interpret the data and
integrate it with the models and attributes.
The result will be:
1. Find untested or non-producing flow units with a high probability or economic production.
2. Or, identify un-drained or un-flushed pay within a producing reservoir.
OVERVIEW
This workshop covers the following topics:
1. Introduce the models which move subtle pay to visible pay (such as pore geometry, Sw,
invasion/flushing and water salinity [Rw]).
2. Use the models to screen data from core, open and cased hole logs and mud log shows and testing.
3. Upgrade old logs with use of cross plots, curve response models and bed thickness corrections.
PROCEDURE
1. Define what is meant by pay.
2. Develop a list of conditions that cause subtle pay and show examples.
3. Present a module for each of the conditions.
a. Module I, how pore geometry hides potential pay flow units.
b. Module II, application of incorrect Rw to calculation of water saturation (Sw).
INTRODUCTION
The current state of the industry is burdened with inadequate reserve replacement, diminished exploration
and recovery of less than 50% of existing oil place. It is imperative that we extract the absolute maximum
amount of oil from each asset by:
1. Developing and applying the best recovery technology.
2. Learning to interpret and optimize the available data.
3. Recognizing pay behind pipe and by pass pay.
OBJECTIVES
This session is designed to optimize the available data and to recognize subtle pay. Participants will:
1. Be introduced to the models and reservoir attributes that aid in the recognition of subtle pay
opportunities in open well bore and cased well bore.
2. Become familiar with the well bore sensors, the data generated and how to interpret the data and
integrate it with the models and attributes.
The result will be:
1. Find untested or non-producing flow units with a high probability or economic production.
2. Or, identify un-drained or un-flushed pay within a producing reservoir.
OVERVIEW
This workshop covers the following topics:
1. Introduce the models which move subtle pay to visible pay (such as pore geometry, Sw,
invasion/flushing and water salinity [Rw]).
2. Use the models to screen data from core, open and cased hole logs and mud log shows and testing.
3. Upgrade old logs with use of cross plots, curve response models and bed thickness corrections.
PROCEDURE
1. Define what is meant by pay.
2. Develop a list of conditions that cause subtle pay and show examples.
3. Present a module for each of the conditions.
a. Module I, how pore geometry hides potential pay flow units.
b. Module II, application of incorrect Rw to calculation of water saturation (Sw).