SIGNIFICANT COST IN WATER BASE MUD

Compared to alternative products, Gilsonite offers comparable or superior performance at a much lower cost. In water-based mud (WBM) applications, Gilsonite’s performance compares favorably with sulfonated asphalts while costing 40% less.

In HP/HT environments using synthetic-based mud (SBM), Gilsonite provides a cost reduction of more than 80% compared to premium co-polymer, while the high softening point of Gilsonite also results in a 45% reduction in fluid loss.

 Water-Based mud (WBM) and Oil-Based mud (OBM) are the most common drilling fluids currently used and both have several characteristics that qualify them for High Pressure High Temperature (HPHT) purposes. This compares the different characteristics of WBM containing Multiwall Carbon Nanotubes (MWCNTs) and OBM to help decide the most suitable mud type for HPHT drilling by considering mud properties through several laboratory tests to generate some engineering guidelines. The tests were formulated at temperatures from 120 °F up to 500 °F and pressures from 14.7 psi to 25,000 psi. The comparison will mainly consider the rheological properties of the two mud types and will also take into account the environmental feasibility of using them. The results showing that the Water-Based offers a more environmental friendly choice yet some of additives that are used to enhance its performance at (HPHT) conditions, such as (MWCNTs), thus it is necessary to develop new formulas for (HPHT) Water-Based muds that could act like Oil-Based mud but cause less harm to the environment.

 Properties of the two mud samples used in this study.

Sample type	Product	Grams
Water Based mud	Water	291.4
	M-I Bar	25
	Versa Trol	1
	Soda ash	1
	Versa Mul	1.5
	Versa Mod	10.5
	Caco3 (M)	15
	Versa gel HT,	4
	LVT-200	93.00
	MWCNTs	According to total weight
Oil Based mud	Oil	155.7
	Safe carb	15
	Lvt-200	27
	Mul XT	5
	Barite	56
	One-Trol Ht,	3
	Lime	8
	Surewet	19
	Cacl2	22.37
	Cc-555	1