... Cementing best practices were religiously adhered to in both the design and execution phases. This included optimized centralization of one centralizer per joint in 18-5/8in casing and two centralizers per joint in the 20in casing, ensuring ample centralization for surface casing cementing...

... met due to some well restriction. The results reveal mud removal parameters in terms of casing centralization have significant effects on the final cement quality in this field. Cement quality devastation persisted even in cases where the cement slurry properties were modified and used in four wells...

... A stable wellbore before, during, and after cement placement Proper centralization Effective mud displacement There could be many other important job parameters not on the cementing scorecard. For example, there are numerous other slurry testing and operational considerations...

... to and during the cementing operations included high bottomhole temperatures of 135°C at 3,724 m, lost circulation, low fracture gradients, and over-pressured source rock (gas). In particular wellbore instability due to tectonic stresses made it difficult to run casings to bottom, so centralizers were used only...

.... Concept Selection There are several ways to centralize the DCS & SCADA. Selection& analysis should be performed in order to achieve optimum reliability, security & efficiency in installation and maintenance cost. Engineering Concept for DCS Two methods emerged as the leading...