The Effect of Weight Material Type on Rate of Penetration Using Dispersed and Non-Dispersed Water-Base Muds

Abstract

The penetration rates of dispersed and nondispersed water-base muds were studied using Mancos Shale. The full-scale wellbore simulator at Drilling Research Laboratory was utilized. Previous studies 1 have indicated that in invert oil muds higher penetration rates can be achieved when the weighting agent is ilmenite rather than barite. This study compares barite and ilmenite in water-base systems. Two grind sizes of ilmenite (fine and standard) were used in order to determine the effects of particle size on penetration rate.

Research progress and development tendency of polymer drilling fluid technology for unconventional gas drilling

“…Therefore, the use of these polymers can reduce the content of useless solids effectively by aggregating fine solid particles into thick particles which could be removed by solid-control equipment. Centering on PHPA and VAMA, the nondispersed low-solid PDF was established (Lummus and Anderson, 1964;Lawhon and Simpson, 1967;Field, 1968;Lanman and Willingham, 1970;Mondshine, 1973;Miller, 1980;Blattel and Rupert, 1982;Steiger, 1982;Parizad et al, 2018). In 1966, the Pan American Petroleum Corporation used non-dispersed low-solid PDF technology first in western Canada, which greatly increased the ROP and reduced the drilling cost by 2.5%.…”

“…Owning advantages of low solid content, fast rate of penetration (ROP), easy-to-control rheological property, and low cost, the PDF has become a drilling fluid kind with the fastest and highest development and the widest application (Browning and Chesser, 1972;Growcock and Harvey, 2005). Since the nondispersed low-solid PDF was invented in the 1960s (Lummus and Anderson, 1964;Lawhon and Simpson, 1967;Field, 1968;Lanman and Willingham, 1970;Duane, 1972;Mondshine, 1973;Foshee et al, 1977;Miller, 1980;Blattel and Rupert, 1982;Steiger, 1982;Hale and Mody, 1993;Parizad et al, 2018), the PDF entered the scientific development stage. Various functional polymer additives and PDF systems have been invented, which solved many drilling problems, strongly supported the development of oil and gas resources, and greatly promoted the development of drilling fluid technology.…”