By ASME Shale Shaker Committee
The one source on hand to the drilling and petroleum engineer on drilling fluids processing.
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Additional info for Drilling Fluids Processing Handbook
They could be made of larger wires, so they had greater strength. Layered screens (a ﬁne mesh screen for good solids removal over a coarse mesh screen for strength) were developed. These layered screens were easier to build and had adequate strength for proper tensioning for increased screen life. This development made it possible for the shale shaker to remove particles greater in size than API 80 Â API 80 (177 microns). In the 1970s the mud cleaner was developed. During this period, no shale shaker could handle the full rig ﬂow on an API 200 screen.
The light slurry, which is almost a clear stream of water, is returned to the drilling ﬂuid. This has become an important part of the ‘‘closed mud’’ system. Actually, the intent is to eliminate or reduce the quantity of liquid discarded. Historical Perspective and Introduction 11 A recent innovation for environmental purposes and minimization of liquid discharge is the dryer. The discharge from linear motion shale shakers, desanders, and desilters ﬂows onto another linear motion shaker that has even ﬁner screens than the main shale shakers (as ﬁne as API 450, or 32 microns) and usually has a larger screening surface.
All of this equipment is discussed in this book. However, the best equipment available is insuﬃcient if it processes only a portion of the active drilling ﬂuid coming from the well. 4 HISTORICAL PERSPECTIVE Drilled-solids management has evolved over the years as drilling has become more challenging and environmental concerns have become paramount. Equipment changes and improvements have responded to the necessity to treat more and more expensive drilling ﬂuids. In this context, probably the largest impact on the drilling industry has been the recognition that polymers can make much better drilling ﬂuids than those used heretofore even though they are expensive.