Back to results
US 5,045,219 AGranted
Use of polyalphalolefin in downhole drilling
AssigneeCoastal Mud, Incorporated
InventorsDavid O. Trahan, Michael B. Faulk
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeCoastal Mud, Incorporated
InventorsDavid O. Trahan, Michael B. Faulk
Estimating the term…
The composition of matter and application thereof in the present invention relates to the application of a synthetic hydrocarbon compound, a polyalphaolefin liquid, blended in various concentrations with chemical oil and water emulsifiers, thinners and oil and water surface tension reducers, the concentration of polyalphaolefin liquid to that of the remaining portion of the blend being no less than 5%; blending the polyalphaolefin liquid and the emulsifiers in a blending tank containing water base drilling mud; circulating the blend of polyalphaolefin liquid and emulsifier with the water base drilling mud down hole, so that the blend of polyalphaolefin liquid emulsifier and water base drilling mud lubricates the drill string or reduces the differential pressure between the wall of the borehole and the drill string so that the drill string is free to rotate and drilling may be undertaken with less drag or torque. In another application, the polyalphaolefin blended with the emulsifier serves as a spotting fluid in order to unstick drill pipe that has become stuck.
A drilling fluid compound for lubricating drill pipe in a water base mud system during the drilling process, the compound comprising:
In a process for drilling oil wells, wherein the drill string is rotated in a formation utilizing a water base mud system, the process comprising the following steps:
A process for unsticking drill pipe in a water base mud system, where the drill pipe has become differentially stuck against the formation, the process comprising the following steps:
Dependencies are inferred from the claim text.