drilling engineering by jj azar pdf editor

Evaluation of Egyptian bentonite and nano-bentonite as drilling mud. Clay nanoparticles modiﬁed drilling ﬂuids for drilling of deep hydrocarbon wells. Rheological and filtration characteristics of drilling fluids enhanced by nanoparticles with selected additives: an experimental study. The presence of nanofluids also leads to reduced mud-cake thicknesses, directly mitigating the risks of differential pipe sticking.Ĭited as: Mohamadian, N., Ghorbani, H., Wood, D., Hormozi, H.K.

The xanthan-gum-treated-clay-nanoparticle drilling fluid showed good fluid loss control and reduced fluid loss by 61% compared to the reference sample. A pure-clay-nanoparticle suspension, without any additives, reduced fluid loss to about 42% and reduced mud cake thickness to 30% compared to the reference sample. The novel results show that nanoparticles do significantly enhance the rheological and filtration characteristics of drilling fluids. For that scenario, the mud-cake thickness is varied, and the filtration properties of the drilling fluids are measured as an indicator of potential well-diameter reduction, caused by mud cake, adjacent to permeable formations. The performance of each drilling fluid type is evaluated with respect in terms of its ability to reduce mud cake thickness and fluid loss thereby inhibiting differential-pipe-sticking. Additionally, the mud weight, plastic viscosity, apparent viscosity, yield point, primary and secondary gelatinization properties, pH, and filtration properties of the various drilling fluids studied are also measured and compared. The suspension properties of drilling fluids containing pure and polymer-treated (partially-hydrolyzed polyacrylamide (PHPA) or Xanthan gum) clay nanoparticles are compared withthose of a conventional water-and-bentonite-based drilling fluid, used as the referencesample.

Drilling engineering by jj azar pdf editor