This open access book offers a timely guide to challenges and current practices to
permanently plug and abandon hydrocarbon wells. With a focus on offshore North Sea, it …

Assessing the integrity of the cement layer and the quality of its bond to the casing and
formation is paramount to ensure that the wellbore is hydraulically isolated from the …

The present article reviews the technology trends in cement job evaluation using logging
tools and considers the main advantages and concerns associated with each technology …

The bonding quality of the seal formed by the cement or collapse material between casing
and formation rock is critical for the hydraulic isolation of reservoir layers with shallow …

In cement-bonding evaluation, channel detection by ultrasonic Lamb waves has been
widely studied and applied in single-casing wells. However, its feasibility in double-casing …

The need to evaluate cement behind multiple casing strings has become critical in the
context of well plug and abandonment (P&A) or slot recovery. A particularly important case …

Cased petroleum wells must be logged to determine the bonding and hydraulic isolation
properties of the cement. Ultrasonic logging of single casings has been widely studied and …

A reliable non-destructive test to assess the integrity of double-cased wells is still an open
task. In the present work, we introduce an analytical–numerical formulation for modelling the …

Acoustic logging is one of the most used techniques for inspecting the integrity of oil wells.
Traditional acoustic techniques have some limitations to analyze the condition of the cement …

Ultrasonic logging is a widely used technology to assess the cement bond condition in a
cased-hole. Advanced ultrasonic pitch-catch measurements can capture reflections at the …