2022 Spring Workshop

Cased Hole Formation Evaluation (CHFE)

In continuation of the DWLS' workshop tradition, next spring's workshop, Cased Hole Formation Evaluation (CHFE), will be held Wednesday, April 13^th, and Thursday, April 14^th, 2022, from 7:30 am to 4:00 pm at the Denver Tabor Center in Denver, CO. 

Overview:

Join us for a two-day workshop covering Cased Hole Formation Evaluation (CHFE)

Breakfast and refreshments will be provided.  A printed booklet will not be provided, but an electronic booklet will be made available in advance via email.

When:

Wednesday, April 13^th, and Thursday, April 14^th, 2022
7:30 AM - 1:00 PM

Where:

Denver Tabor Center
1200 17th St.
Denver, CO

Registration:

DWLS members that were in good standing as of 1/1/2022 should have received an email on March 10^th with instructions to register at the members-only reduced rate.  Similarly, students should have seen an email with the students-only reduced rate.  All others should register using the PayPal link below ($175):

If you are registering for someone else or using a PayPal account that is not in your name, please click here to send us an email with the correct registrant information. You should also use this link if you are registering multiple people; please provide the name, company affiliation, and email address for each registrant.

If you are unemployed, you may contact us about a discounted rate.  The deadline to register is Wednesday, April 6, 2022.

Cancellations:

Cancellations with a full refund can be made up until the April 6^th deadline. After that date, no refunds will be made, however, you may send someone else as your replacement (please notify us beforehand using the email link above).

Speaker:

Jim Hemingway, NoHiddenPay LLC

Abstract:

The purpose of this course will be to promote the concept that at least some primary formation evaluation can be done in cased wellbores which eliminates the need to use expensive rig time for logging and also provides a safer logging environment because all measurements are done from inside casing.

This course will focus on the formation evaluation aspects of cased-hole measurements. Very little time will be devoted to things such as bond logs, mechanical services or production logging. Because we typically get involved with measurements that can be several decades old we will cover the older measurements and work our way to the latest technologies.

Starting with sigma we will compare cased-hole measurements with equivalent open-hole measurements. We will explain the uses as well as limitations of making measurements in cased wellbores with the understanding that almost everything is easier and more accurate when done in open-hole.

Recognizing that there are no alternatives to some open-hole measurements we will work with what we have and also illustrate techniques for deriving the same answers from cased hole measurements as could be done with traditional triple-combo open-hole logs. Time-lapse logging is common in cased hole for the purpose of reservoir monitoring in EOR projects but this is often done using only the most basic measurements and is usually tied to a more complete formation evaluation that was done using open-hole data. This seminar will offer the alternative of doing the more complete formation using a combination or older and newer cased hole measurements. Understanding where various measurements work and where they do not work will be included.

CHFE Course outline

Introduction and purpose

Old OH/CH log integration

• Measurement physics and theory
• Migration of OH measurements to CH environment  
• Neutron porosity- types of measurements
• Sigma-neutron lifetime-thermal decay time-Pulsed neutron capture (PNC)
• Sonics/acoustics
• Spectroscopy & carbon/oxygen inelastic and capture spectroscopy applications
• Resistivity
• Wireline formation testing  
• g-g density
• Fast Neutron Cross Section    

Quality control will be distributed throughout the course  

Data integration for log computations  

Conclusions  

Short course instructor, Jim Hemingway

James Hemingway earned degrees in Chemistry and Chemical Engineering. He joined Schlumberger in 1979 and has held various petrophysical and engineering positions for most of his 37 year career. He has been heavily involved in evaluating unconventional reservoirs using electromagnetic and nuclear measurements. James holds degrees in chemistry and chemical engineering.

He worked on various Enhanced Oil Recovery projects starting in California for 8 years where he developed techniques for reservoir evaluation using high frequency electromagnetic propagation as well cased hole techniques primarily based on pulsed neutron measurements. James later moved into an engineering role working of various pulsed neutron projects. While working in Paris a few years later he launched an initiative to be called Formation Evaluation Behind Casing (CHFE) with added measurements that did not need to be combined with openhole measurements for completion design.

His primary objective for the past 25 years has been to develop viable techniques for formation evaluation behind casing. Seeing the increasing number of wells that do not have openhole formation evaluation measurements has led to a culture of well planning that does not include openhole logging for formation evaluation. After experimenting with various inelastic ratio measurements and gamma-gamma density measurements to fill in the missing pieces for a reasonably comprehensive formation evaluation behind casing a new measurement was added to the industries capabilities. These capabilities allow the industry to properly evaluate unconventional wells in environments where openhole logging is considered too expensive and risky.

In 2010 James received the best paper award from the SPWLA for work on a cased hole density measurement.  Although an improvement over previous work based on pulsed neutron sources there were still too many limitations. The last project James worked on was the fast neutron cross section as an alternative to using bulk density in cased hole.

James was a Distinguished Lecturer for the Society of Petrophysicists and Well Log Analysts in 2000-2001 and 2011-2012 on cased hole logging technologies. And a Distinguished Lecturer for the SPE in 2014-2015. James retired in December 2016. In 2018 he assumed the role of Vice President Technology for the Society of Petrophysicists and Well Log Analysts (SPWLA) and served as president of the SPWLA for the 2020-2021 term. Jim is currently the Vice President Enhanced Production for No Hidden Pay LLC.