: Abstract

The Petroleum company that has been working at Syrian Field , they  has been Using different type of  drilling mud for drill the Oil and  Gas Well .

Water Base Mud use for drill the stability formations  , and Specialty  drilling mud (Oil Base Mud and Salt Mud) use for drill the instability formations(Salt ,Clay )that cause Problems as ( stuck Pipe ,Complete Mud Less,Blou out,Hight Pressure  Formation ).

  A drilling fluid has prepared of The Syrian Clay and has used When drill of The gas and oil well in The Syrian Petroleum company fields, drilling fluid has prepared of The Iran and Turks Clay and has used When drill of The gas and oil well in The        AL fourat Petroleum, When adding The polymers with a drilling fluid .their Properties (The Rheological Properties/ Plastic Viscosity, Yield Point, Gel Strength, Carrying Capacity Index / and filtration) are best.

 This research to aimed Study the effect adding of some the polymers on the Properties of drilling fluids Using Syrian fields for and the drilling time is less and drill operation is over economically

Drilling mud is one of the most important elements of any drilling operations. The mud has a number of functions, which must all be optimized to ensure safety and minimum borehole problems. Failure of the mud to meet its design functions can prove extremely costly in terms of materials and time, and can also jeopardize the successful completion of the well and may even result in major problems such as stuck pipe, kicks or blow outs