Well Cement Integrity offers a comprehensive examination of the critical factors influencing the long-term safety and reliability of wellbore barriers. The book synthesizes recent advances in evaluation techniques, including experimental laboratory testing, field diagnostics, and innovative data-driven methods such as AI and machine learning. It addresses the unique challenges faced in high-pressure, high-temperature, geothermal, and CCUS environments, providing practical guidance for assessing and maintaining cement integrity throughout the entire well lifecycle. The content emphasizes a holistic approach, integrating laboratory assessments, logging tools, pressure testing, and long-term monitoring strategies to enable practitioners to make informed decisions and implement effective remediation measures.
The book's structure includes detailed chapters on topics such as cement bond logs, sustained casing pressure, cement plugs, and plug-and-abandonment procedures. It explores the fundamentals of experimental evaluation, discusses the causes and prevention of casing failures, and presents case studies illustrating real-world applications. Additional chapters focus on the evaluation of cement integrity in specialized scenarios like CCUS and geothermal wells, as well as cutting-edge techniques involving AI and machine learning to predict and analyze well performance. Practical procedures and industry standards are incorporated to support effective decision-making and operational excellence.
1. Introduction to Well Cement Integrity
2. Holistic Cement Evaluation - Lifecycle review, evaluation process, and key
elements
3. Experimental Cement Testing - slurry properties, bond strength,
permeability, and destructive tests
4. Sustained Casing Pressure - causes, monitoring, prevention, and
remediation with case studies
5. Cement Bond Logs (CBL) - ultrasonic and sonic logs, interpretation,
quality control, and practical case examples
6. Pressure Integrity Tests - PPT, LOT, FIT, inflow, and negative pressure
testing methods
7. Temperature and Fiber Optic Logs - conventional and fiber optic sensing,
flow detection, case studies
8. Corrosion and Other Logs - corrosion logs, tracer logs, indirect cement
evaluation
9. Cement Plugs and Evaluation - placement methods, integrity assessment
techniques
10. Data-Driven and AI/ML Approaches - cement bond evaluation, predictive
analytics, corrosion assessment
11. Plug and Abandonment - procedures, long-term integrity, case studies
12. Cement Integrity in CCUS Wells - challenges, additives, geopolymers,
evaluation techniques
13. HPHT and Geothermal Cement Evaluation - high-temperature effects, bond
interpretation, operational practices
RAHMAN ASHENA (SOROUSH), PhD (ORCID No. 0000-0003-4161-6461)
Rahman Ashena has over 10 years of field experience as a drilling, completion, and production engineer and more than 10 years of global consulting experience. He is the founder of Smart Energy and Data Analytics (SEDA) Group, based in Houston, USA, where his team develops AI-based software, including the xOptim software suite, and delivers data-driven solutions for the petroleum and geothermal industries. These solutions cover drilling (including UBD/MPD), reservoir PVT and material balance, and production engineering applications, including geothermal and carbon capture and storage (CCS) wells. SEDA Group also provides advanced engineering consulting, mentoring, training, and analytics support for energy projects worldwide.
Ashena is the author of several well-known books:The Practical Handbook of Well Control, Cement Bond Logs: Guidelines and Interpretation, and Coring Methods and Systems. He has also published more than 80 peer-reviewed technical papers in the areas of well engineering and artificial intelligence applications. Since 2023, he has served as Co-Editor-in-Chief of Springers Journal of Petroleum Exploration and Production Technology.
He holds a PhD in Petroleum Well Engineering from Montanuniversität Leoben (2017), an MSc from Curtin University (2009), a BSc from the Petroleum University of Technology (2007), and an MSc in Data Science and Analytics.
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[email protected] WILLIAM K. (BILL) OTT, P.E., is an independent petroleum consultant based in Houston, Texas, and founded Well Completion Technology, an international engineering consulting and petroleum industry training firm established in 1986. Before consulting and teaching, Mr. Ott was the division engineer for Halliburtons Far East region based in Singapore. Previously, he was a research field coordinator for Halliburton in Duncan, Oklahoma. Mr. Ott received his BS Degree in chemical engineering from the University of Missouri (1972). He is a registered professional engineer in Texas, a 50-year SPE member, and an SPE Distinguished Lecturer (2007-08) on the Selection and Design Criteria for Sand Control Screens. He has conducted technical petroleum industry courses worldwide and written numerous technical papers relating to well completion and workover operations. He co-authored World Oils Modern Sandface Completion Practices, World Oil Mature Oil & Gas Wells Downhole Remediation Handbook, and Cement Bond Logs: Guidelines and Interpretation. Ott is a respected consultant in cementing, drilling and well integrity at SEDA Group.
JACQUELINE GREENWELL (Orcid No. 0009-0004-7281-9047) has over 27 years of experience in the oil and gas industry, specializing as an independent Senior Well Integrity Engineer with a background in Completions and Well Interventions Team Lead at Santos Ltd, and is currently a consultant at SEDA Group. Starting her career with SLB as a field wireline logging engineer, she worked onshore and offshore in Australia and New Zealand. Jacquies expertise lies in addressing operational and abandonment well integrity challenges, managing risk, well maintenance and barrier verification. She has been involved in managing loss of containment incidents and in recognition and prevention of the same. Greenwell has developed Well Integrity Management systems for various clients in adherence to ISO 16530-1. Her passion lies in mentoring engineers and training production personnel in understanding fundamental principles and risks associated with the operational management of wells. Greenwell holds a Bachelor of Engineering (Chemical) and Bachelor of Science (Organic Chemistry) from The University of Melbourne, Australia.
