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Sun Drilling Products Corporation

Jerry J Rayborn

J Phillip Dickerson

A process for the manufacture of a water based drilling fluid additive comprising the steps of: (a) mixing hydrophobic carbon black and either a surfactant or a dispersant and (b) shearing the mixture of step (a) under a sufficiently high mechanical shear for a sufficient time to convert the hydrophobic carbon black into hydrophilic carbon black. This invention is also directed to a water based drilling fluid additive prepared according to the above process and the use of the additive in a water based drilling fluid.

Method of making a drilling fluid containing carbon black in a dispersed

A process for the manufacture of a water based drilling fluid additive comprising the steps of:

Method of making drilling fluid containing asphaltite in a dispersed

A process and system is provided permitting the recovery of solid particulate material, particularly solid copolymer beads, from a drilling fluid which also contains drilled solids of the same and larger size as the particulate material. The drilling fluid returns are passed to a separator, such as a shale shaker, which screens from the fluid a major proportion of the drilled solids along with the particulate material. The latter fraction is then passed into a vessel containing a weighted liquid having a specific gravity less than that of the drilled solids but greater than that of the particulate material. In such vessel, the particulate material is allowed to rise to the surface of the liquid while the drilled solids settle therein. The particulate material can then be skimmed from the upper portion of the vessel and returned to the well for recirculation therein. To conserve the weighted liquid, the particulate material removed from the vessel can be passed through a separator to separate it from any weighted liquid so that the latter can be returned to the vessel. Similarly, the drilled solids removed from the vessel can likewise be separated from any weighted liquid removed with them and the liquid returned to the vessel.

Process and system for recovering solid particulate additives from a

A method wherein spherical plastic beads are added to a drilling mud to reduce torque and drag on the drill string and to otherwise enable smooth drilling operations downhole by acting as a lubricant between the drill string, drill bit, and the well bore by reducing friction therebetween.

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Franklintown, LA, United States of America

Jerry J Rayborn