Methods and apparatus for downhole probes
AssigneeEvolution Engineering Inc.
InventorsJili (Jerry) LIU, Patrick R. DERKACZ, Aaron W. LOGAN, Justin C. LOGAN, David A. SWITZER
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Abstract
A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.
Claims55
A method for using a downhole probe, the method comprising:
- providing a probe, wherein at least one vertical section of the probe has an area of at least pi inches squared;
- inserting the probe into a bore of a drill collar;
- passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.
A drilling apparatus comprising:
- a probe comprising at least one vertical cross section with an area of at least pi inches squared;
- a drill collar comprising a bore;
- and
- a drilling fluid pump;
- wherein:
- the probe is located within the bore of the drill collar;
- the drilling fluid pump is operable to pump drilling fluid through the bore of the drill collar at a flow velocity of less than 41 feet per second;
- and
- the drilling apparatus is operable to drill a wellbore while drilling fluid in the drill collar maintains a flow velocity of less than 41 feet per second.
A drilling apparatus comprising:
- a drill collar comprising an outer diameter of no more than 6.5 inches;
- and
- a probe inside a bore of the drill collar, the probe comprising at least one vertical cross section with an area of at least pi inches squared.
A downhole probe apparatus comprising an electronics unit and a housing, wherein:
- at least a portion of the electronics unit forms a size-on-size fit with the housing;
- the housing has a length to outer diameter ratio of less than 70:1;
- and
- the housing is less than 20 feet long.
Dependencies are inferred from the claim text.