Trenchless Technology

OCT 2018

Trenchless Technology is the premier communications vehicle for the trenchless industry. Through our multiple platforms, readers receive insights into the trenchless industry, as well as keep connected to the latest news, products and projects.

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68 T R E N C H L E S S T EC H N O LO GY O C TO B E R 2018 >d,Kh',d,h^K& Z/>>/E'&>h/^ within the HDD/trenchless industry is still relatively new, recent trends sug- gest that this standard is shifting as solids control is one of the most im- portant phases in the drilling process. This shift is due to a growing aware- ness that drilling luid maintenance and disposal can become exponential problems as they are both harmful to the environment and extremely costly. With the correct solids control sys- tem, luid life can be doubled, if not tripled. Since whole mud dumping and dilution are unacceptable from both a cost and environmental stand- point , effective solids control equip - ment has become an increasingly im- portant aspect in any drilling process. One of the most important objec- tives in solids control is to remove as many of the large drilled solid par- ticles ( i .e. contaminants), as is prac- tical , the irst time that these solids are pumped out of the borehole. This must be done without signiicantly impacting the commercial drilling luid solids. This requires properly designed and installed solids removal treating equipment , sized to process a minimum of 100 up to 125 percent of the mud circulation rate. Solids that are not removed during the irst circu- lation through the surface equipment are subjected to mechanical degrada- tion by the drill bit , reamers and mud pumps during each circulation cycle until they are too ine for removal by traditional mechanical ( i .e. Primary cleaning systems utilizing shaker and hydrocyclone technology) means. T H E P R I N C I P L E S O F E F F E C T I V E S O L I D S C O N T R O L By Michael Rai Anderson

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