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Our experts at Silverson have gained many years of experience working with high shear mixers in many, applications, we have gained a wealth of mixing information. Check out our site to find product, as well as application information. Our experienced engineers offer mixing tips and answer frequently asked questions about high shear mixing operations. You can also watch animations of Silverson high shear mixers in action.
Drilling fluids (or drilling muds) have several functions, including carrying bore cuttings to the surface, cooling and lubricating the drill "string" and controlling subsurface pressures. A simple water based mud for horizontal drilling and some vertical operations consists of clay (bentonite) dispersed into water. In deep wells where the potential pressure of gas/oil dictates a heavier product, inert solids such as barite or hematite are added to weight the bentonite suspension. Muds based on a water/oil emulsion (known as "inverts") are used for drilling deeper wells as they have better lubricating properties and are more temperature stable than water based muds. Traditionally diesel was used for inverts, however environmental concerns are leading to the use of low toxicity mineral oils, synthetics and esters.
Xanthan gum is increasingly used as a rheology modifier, due to the high viscosity that can be obtained with small percentages of gum. Another advantage of xanthan gum is the increased stability it provides with muds based on water or brine.
Waste management practices such as re-injection of fluid into redundant wells or transport to shore for remediation are increasing.
For further information or to view Preparation of Drilling Fluids as a PDF visit our website, alternatively call our knowledgable team on 01494 786 331.
For more information on Preparation of Drilling Fluids talk to Silverson Machines Ltd