A flange which incorporates plastic pieces to separate the metal parts.

The pressure at which a well that has been closed in on a kick is circulated when well-killing procedures are begun

An additive used to retard undesirable chemical action in a product.

It is added in small quantities to gasolines to prevent oxidation and gum formation, to lubricating oils to stop color change, and to corrosive environments to decrease corrosive action.

A pressure-multiplier-type well servicing mobile pump.