Sustained Casing Annular Pressure: Assessment Methods for Gas Migration Investigations
Monday, March 4, 2019: 9:50 a.m.
Jeff Kennedy
,
ALL Consulting, Tulsa, OK
J. Daniel Arthur, PE
,
ALL Consulting, LLC, Tulsa, OK
Tom Tomastik, CPG
,
ALL Consulting, Galena, OH
Will Green, P.G.
,
ALL Consulting, Cadiz, OH
Sustained Casing Annular Pressure (SCAP) has long been a concern in the oil and gas industry. With the development of unconventional resources, the concern over SCAP has only increased. Unconventional wells present unique challenges in wellbore construction and cementing which have been well documented. Although casing and cementing technologies have improved, these unique challenges often lead to the occurrence of SCAP. While much has been written about wellbore construction and cementing methods to prevent SCAP, there is limited work devoted to assessing SCAP once it occurs. This has led to SCAP analysis and quality control methods which vary throughout the industry. The lack of consistent practices has made interpreting SCAP challenging. This presentation will discuss the significance of SCAP, causes of SCAP, methods for assessing and analyzing SCAP and will provide examples of existing regulatory criteria. Additionally, we will present case studies which illustrate real world SCAP assessment.
Jeff Kennedy, ALL Consulting, Tulsa, OK
Geologist
J. Daniel Arthur, PE, ALL Consulting, LLC, Tulsa, OK
Dan Arthur is the Managing Partner of ALL Consulting (www.all-llc.com). Mr. Arthur earned his Bachelor’s degree in Petroleum Engineering from the University of Missouri-Rolla. He is a recognized authority on environmental issues pertaining to unconventional resource development and production. Mr. Arthur has served or is currently serving as the lead researcher on several significant projects involving unconventional resources; environmental considerations of shale gas development; produced water management and recycling, as well as research with the Ground Water Protection Research Foundation (GWPRF) involving analysis of produced water management alternatives and beneficial uses of coal bed methane produced water.
Tom Tomastik, CPG, ALL Consulting, Galena, OH
Tom Tomastik received his BS and MS degrees in geology from Ohio University in 1979 and 1981. From 1982 to 1988, Mr. Tomastik was employed as a consulting geologist involved in oil and gas exploration and development in southeastern Ohio. From December of 1988 until August of 2014, Tom was employed by the Ohio Department of Natural Resources, Division of Oil and Gas Resources Management, UIC Section. Tom retired from the Division in August of 2014. He was responsible for all of the Underground Injection Control (UIC) duties, which include performing independent reviews of applications for Class II saltwater injection, secondary and enhanced recovery projects, and Class III salt-solution mining wells in Ohio. Tom also planned and implemented highly complex groundwater conflict investigations involving oil and gas investigations. He provided technical expertise to the general public, oil and gas industry, governmental agencies and officials regarding Federal and State regulations, oil and gas and injection well construction, well operations, and groundwater contamination and stray gas investigations. He has authored or co-authored articles on various aspects of Ohio’s oil and gas industry, groundwater investigations, injection wells, solution mining, and geology. Tom is currently employed as a Senior Geologist and Regulatory Specialist with ALL Consulting of Tulsa, Oklahoma and is involved in injection well evaluation, permitting, and oversight, stray gas investigations, groundwater complaint investigations, water sourcing, induced seismicity and seismicity monitoring.
Will Green, P.G., ALL Consulting, Cadiz, OH
Senior Geologists
