High performance of the cementing complex during preparation of cement slurry and its injection into the well allows creating a turbulent fluid flow in the well's annulus ensuring uniform and completing substitution of the drilling mud by the cement slurry.
Optimization of the casing cementing time is also achieved through a high performance of the blender, followed by injection of the prepared cement slurry into the well using high capacity piston pumps NTP - 727.
The equipment, in combination with the Cementing
Control System from BP's DrillView software, enabled the cementing
unit to be fully controlled from any location.
Improving cementing practices using a lightweight cementing system, including a more effective lost circulation additive, increased cementing success from 40 percent to 75 percent," said Adam Sayers, senior operations engineer for the Piceance Basin, Tom Brown Inc.
Coalbeds typically are brittle and contain natural fractures, which make cementing of wells difficult because cement slurry flows into the natural fractures.