Aging Cells

Description

Drilling fluid aging is the process in which a drilling fluid sample, previously subjected to a period of shear, is allowed to more fully develop its rheological and filtration properties. The time period needed to more fully develop properties varies from as little as several hours (usually 16 hours) to as much as several days. The aging can be done at either ambient or elevated temperatures.

AGING CELLS &ACCESSORIES

Drilling Fluids and Components

Most drilling fluid formulations contain a base liquid and additives which must be dissolved or mechanically dispersed into the liquid to form a homogenous fluid. The resulting fluid may contain one or more of the following: water-dispersible (soluble) polymers or resins, clays or other insoluble but dispersible fine solids, and soluble salts. The fluids are mixed or sheared for times appropriate to achieve a homogenous mixture and are then set aside to "age." Aging is done under conditions which vary from static to dynamic and from ambient to highly elevated temperatures.

Aging Cell Specifications

Part No.	Material	Volume	Maximum  Working Pressure		Maximum Temperature
		ml	psig	kPa	°F	°C
316501	316 Stainless Steel	500	2500	17237	500	260
316502	316 Stainless Steel	260	2500	17237	3501	177
316503	316 Stainless Steel	500	2500	17237	500	260

¹Cells are rated at 350°F (177°C) since allowable sample size becomes less than 200 ml at higher temperatures.

²Cells cannot be pressurized.

The recommended equipment and procedures  for aging water-based drilling fluids may be  found in API Recommended Practice 13B-1 and  API Recommended Practice 13I.

³Corrosion coupon holder and gas injection tube are mounted to inner cap.

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