Development of an environmentally friendly water-based drilling fluid for Iran oil fields

  • سال انتشار: 1390
  • محل انتشار: دومین همایش ملی مدیریت پساب و پسماند در صنایع نفت و انرژی
  • کد COI اختصاصی: PASAB02_075
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 2248
دانلود فایل این مقاله

نویسندگان

Meisam Mirarab Razi

Department of Chemical Engineering, Iran University of Science and Technology

Seyed Meisam Sharifi

Hamid Saadati

seyed Nezameddin Ashrafizadeh

چکیده

The objective of this study was to develop a water-based drilling fluid which is environmentally friendly. Three three-parameter rheological models, i.e., the Herschel-Bulkley, Robertson-Stiff and Sisko, were considered to describe the pseudoplastic behaviour of drilling fluid. All samples showed non-Newtonian behaviour even at the lower concentrations. Two statistical procedures, i.e., the coefficient of determination (R2) and the sum of squared errors (SSE), were applied in order to select the best model describing the pseudoplastic behaviour of the high viscosity CMC solutions. The results exhibited that Robertson-Stiff model could more accurately fit the experimental data. Finally, the effect of the temperature and the concentration on the rheological parameters of Robertson-Stiff model, i.e., k, n, and , was examined. The developed models for the parameters k and n could adequately estimate their value as a function of the temperature and concentration, but the model considered for the parameter had not suitable accuracy where the coefficient of determination (R2) obtained 0.594. Hence, lowess type method was applied in order to better predict the values. Different amounts of span in terms of percentage were considered to select which span percentage is the optimum value based on the accuracy of the estimation and the calculation time. It was observed that span 10 % could precisely predict the value where R2 and SSE obtained 0.955 and 0.0693, respectively.

کلیدواژه ها

Carboxymethyle cellulose; Rheological properties; Rheological models; Lowess fit type

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.