Well cement composition for deep water offshore wells

摘要

A well cement composition for cementing casing strings in deep water offshore formations penetrated by well bores, the composition comprising a single hydraulic cement, water, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive and an environmentally degradable compressive strength and set accelerating additive. The compositions may also include a gas and a foaming and foam stabilising agent.