Author/Authors :
Kiumars ،Kamalyar Petroleum University of Technology, Ahwaz, Iran , Mohammad ،Mesbah Petroleum University of Technology, Ahwaz, Iran
چكيده لاتين :
The fluid used in rotary drilling, once regarded only as a means of bringing rock cuttings to the surface, is now recognized as
one of the major factors involved in the success or failure of the drilling operation. In addition to lifting the cuttings, the drilling
fluid must perform other, equally important functions directed toward the efficient, economical, and safe completion of the
drilling operation. For this reason, the compositions of the drilling fluid and its resulting properties have become the subject of
much study and analysis.
The sample which is selected for conducting the experiments is a kind of soil which uses as additive materials in ceramic
factories. Two types of this Sample were used as drilling additives which are mentioned as Sample-A and Sample-B. The base
mud used in the experiments was a water base mud including 20gr Bentonite per 350 cc water. For each type five samples with
different concentrations were prepared and properties of the mud such as fluid loss of the mud, filter cake thickness, apparent
viscosity, plastic viscosity, yield point, 10-sec and 10-min gel strength, and mud weight are determined.
The results indicate that the addition of these Samples has not significant effect on mud weight, plastic viscosity, and fluid loss
of mud. They also indicate that the addition of Sample-A and B increase the gel strengths, apparent viscosity, and yield point of
the mud, but decrease the thickness of the mud cake.
