1.It is process in which a drilling fluid sample for the rheological and filtration properties
2.Temp. Range: Ambient to 500 F
Aging of Water Based Drilling Fluids
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 18 hours) to as much as several days. The aging can be done at either ambient or elevated temperatures.
Rigchina Roller Ovens provide an excellent method of aging fluid samples for further analysis. High-Temperature Aging Cells containing sample fluids are placed in the roller oven where they are subjected to moderate heat and agitation (rolling) on power driven rollers. Samples may also be heated without rolling (static aging). These Roller Ovens are constructed of polished stainless steel and other corrosion resistant materials. They are well insulated and the temperature is regulated by a digital electronic controller. An internal circulation fan assures an even temperature distribution throughout the oven.
ROLLER OVEN SPECIFICATIONS
Aging Cell Capacity
Model RCRO-2 two Roller Oven Model RCRO-4 Four Roller Oven
Temperature Range: Ambient to 500ºF
Heater Power: 1000 Watts
Power Requirements: 1200 Watts
Water-Based 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.
CAUTION: Wear eye protection whenever drilling fluids are formulated, handled or tested.
Drilling Fluid Sample Storage, Disposal
Drilling fluid formulations are usually kept until used up or until properties move outside acceptable ranges. Some laboratories do not routinely keep unused portion of test muds at ambient temperatures longer than some arbitrary time, such as one week or one month. Prolonged storage is best done in refrigerated units with capability of storage up to one year at 40°F (4°C).
Drilling fluid samples which contain certain organic materials or polymer products subject to fermentation (i.e., starches, biopolymers, etc.) should either have a preservative added or should be discarded after a suitable time which precedes the expected onset of biological degradation. Unused samples should be discarded in an environmentally appropriate manner based upon known ingredients.
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