Cements for well environments with temperatures above 110 °C are typically designed with silica additions. This is the case for many of the wells in the North Sea, which is a region promising for large-scale geological ...

Long-lasting cement plugging of wells is crucial for successful CO2 storage in underground reservoirs. It requires a profoundly improved understanding of the behavior of fractured cement under realistic subsurface conditions ...

An estimated 3,000 oil wells need to be plugged and abandoned on the Norwegian Continental Shelf (NCS), with approximately 150 new wells being drilled each year. The petroleum industry estimates the total plugging costs ...

Calcium carbonate is by far the most widespread scaling material. Its deposition in pipes and flowlines has been a long-standing problem for many industries. Hence, a lot of research is devoted to scale inhibition. One of ...

This experimental work is the continuation of the literature study of cement-formation bonding, done in the autumn semester. Cement-formation bonding has not been given special attention so far, in resolving the well ...

Large-scale implementation of carbon dioxide (CO2) sequestration in depleted oil and gas reservoirs may potentially mitigate global climate change. However, successful CO2 storage is contingent on a limited leakage through ...

The technology risk aversion among decision makers in the oil and gas industry leads to over-cautious technology decisions. To enable an acceleration of technology development and adoption on the Norwegian Continental ...

Carbon Capture and Storage (CCS) projects are aimed to store CO2 underground and to prohibit/restrict any leakage to the well, formation and to the surface. Standards applied to control a well and to keep its integrity are ...

Depleted oil reservoirs are considered a viable solution to the global challenge of CO2 storage. A key concern is whether the wells can be suitably sealed with cement to hinder the escape of CO2. Under reservoir conditions, ...