During the life cycle of an oil well the cement paste is subjected to various forms of
deterioration which affect its durability. One of these forms of deterioration is due to the effect …

Underwater cast and cured geopolymers with Si/Al ratios of 1.78 and 2.00, synthesized from
Class C fly ash and metakaolin, were characterized by X-ray diffraction, X-ray fluorescence …

Near-wellbore rock fracture is a key subject in subsurface energy extraction. Casing
perforation completion is perhaps the most used type of well design mainly in comparison to …

This paper is devoted to study the mechanical behavior of a low-density cement (with a
density of 1.3 g/cm 3) under shale oil in-situ conversion conditions. A series of tests were …

A damaged cement sheath in wells can open a leakage pathway to shallow freshwater
aquifers and atmosphere. Quantitative assessment of leakage along wells has become an …

Cement grouting is a common technique implemented for permeation and ground
improvement in civil and mining engineering projects. Basically, it is the injection of cement …

Portland cement is commonly used in wells to provide zonal isolation in the annulus. A
damaged cement sheath can expose the casing to corrosive fluids and open a leakage …

A new lightweight temporary-sealing cement (LTC) is developed in this study to prevent lost
circulation and simultaneously protect target formation during drilling. Water-soluble …

To better provide zonal isolation for the production of oil and gas, low-density oil well cement
(LD-OWC) filling a deep oil well was developed to reduce the high hydrostatic pressure …

In this work, we have developed a methodology to model the stress evolution in cement
plugs during hydration. The model begins with the slurry state of cement and calculates the …