E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01) C09K 7/06 (2000.01)
Patent
CA 2419953
Oil based drilling fluids (muds) that include clays can be broken into at least three layers of their respective components (oil, water, and clay) by adding a few weight percent of a high HLB surfactant prediluted in water. Centrifugation can accelerate this separation process. The resulting oil, water, and clay layers can thereafter be more cost effectively recycled or disposed of following the process. In another embodiment an additional surface active agent is added to facilitate breaking the drilling mud into three or more phases without the centrifuge.
les liquides de forage à base d'huile (boues) qui renferment des argiles peuvent être subdivisés en trois couches correspondant à leurs éléments constitutifs respectifs (huile, eau et argile) par adjonction de quelques unités en pourcentage de poids d'un tension actif à rapport hydrohpile-lipophile élevé dilué dans l'eau. La centrifugation peut accélérer le processus de séparation. Les couches d'huile, d'eau et d'argile qui en résultent peuvent ensuite être recyclées ou évacuées de façon plus économique. Selon un autre mode de réalisation, on ajoute un agent de surface actif supplémentaire afin de faciliter le fractionnement de la boue de forage entre au moins trois phases sans centrifugation.
Carey Jeffrey M.
Haas Alvin E.
Keir Thomas M.
Manka John S.
Ridout & Maybee Llp
The Lubrizol Corporation
LandOfFree
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