fracture fluids in Drilling

Drilling fluids or liquids perform a variety of functions that
influence the drilling rate, the cost, efficiency and safety of drilling
operations. There are many types of drilling fluid systems available
like water base muds, oil base muds, stable foam muds, air
or gas base muds from which the right system may be chosen.
Main drilling mud additives include viscosifying agents, fluid loss
control agents, drilling fluid dispersants and corrosion inhibitors.
Cement and cement additives are considered to be critical inputs
in the completion of any oil and gas well. The increase in demand
for cement suitable for oil and gas wells led to the establishment
of API codes by the American Petroleum Institute and nine classes
of cements for the oil industry have been classified. Two of the
nine classes of cements, the classes G and H, are called basic
oil well cements. Main cement additives retarders, turbulence
inducers and fluid loss controlling agents.