Sentence examples for drill casing from inspiring English sources

The hearing did not resolve the additional question of whether BP made a fatal error by not installing enough "centralizers," devices used to keep the drill casing centered within the well bore.

The gas companies counter that there is no evidence of water contamination from fracking and that the chemicals are shielded from aquifers by steel and concrete drill casings before being released thousands of feet below drinking water sources.

With the help of pore pressure prediction, an appropriate mud weight to be selected and drilling casing program to be optimised, safe and economic subsurface drilling can be designed.

The availability of the NDE methods has given engineers and contractors the false impression that any defects that may have been produced during construction due to problems in concreting, drilling, casing, slurry and rebar cage placement can be identified and repaired before the bridge is opened to traffic.

Once the well is drilled, casing is inserted to prevent the water from wearing away and being contaminated by the sides of the well.

This information can be applied in determining the sealing pressure of rocks (reservoir), the mud pressure window, and the required number of drilling casings.

He added that engineers never had a complete enough understanding of the inner workings of drill pipe casing or blowout preventer mechanisms to make the efforts work.

Hence, Harvey's five rules for natural gas are: Don't allow leaky systems; use gas to phase out coal; have sound well drilling and casing standards; don't pollute the landscape with brackish or toxic water brought up by fracking; and drill only where it is sensible.

Problems during drilling and casing design is discussed.

Risk assessment and cost: Before the petroleum well is drilled, the casing design and equipment should pass several standards and be certified.

Drilling with casing (DwC) is an innovative method particularly widespread in deep shale plays, that reduces the time and cost of drilling stages.