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US 2021/0340827 A1Published application
Jet Pump Drilling Assembly
AssigneeHughes Tool Company
InventorWilliam James Hughes
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AssigneeHughes Tool Company
InventorWilliam James Hughes
Estimating the term…
Disclosed herein are various embodiments of methods and systems for drilling a wellbore into an oil or gas production zone to prevent formation damage in the reservoir using underbalanced or near-balanced drilling techniques, wherein a jet pump drilling assembly is used to create a vacuum around the drill bit. The design of this jet pump drilling assembly prevents the flow of all drilling/power fluid from entering a drill bit Only fluids from the reservoir are allowed to enter the drill bit. The assembly includes a barrier to ensure that no drilling/power fluid discharged from the jet pump located above the drill bit can flow back around to the jet pump jet pump suction ports located in the drill bit thus preventing any drilling/power fluid from ever contacting the drill bit.
A system for drilling an oil, gas, geothermal, or sequestration well or disposal reservoir using a jet pump comprising;
A system for drilling an oil or gas well wherein a vacuum is created in front of a rotary drill bit while maintaining underbalanced conditions in a return annulus from the rotary drill bit discharge ports back to the surface to allow the well to produce oil and gas while drilling, comprising;
A system for producing oil or gas from a well wherein a vacuum is created in a lateral wellbore comprising;
Dependencies are inferred from the claim text.