LandOfFree - US Patents - Listing for Boring or penetrating the earth,With signaling, indicating, testing or measuring

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation

Determination of thermal properties of a formation

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Determining drillstring neutral point based on hydraulic factor

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow

Determining the extent of entry of fluids into a borehole during

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Deviation control tool

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Device for detecting inclination of boring head of boring tool

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Device for positioning of a drill bit

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Signaling or indicating condition of cutting in cuttings...

Device in core barrels

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Device, preferably for underground purposes, to transfer informa

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Direction control in well drilling

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling method and apparatus

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling of a drill string

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling system

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling system and apparatus

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling system with eccentric mounted motor and bia

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Directional drilling using a rotating slide sub

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Disposable telemetry cable deployment system

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation

Double emulsion based drilling fluids

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow

Down hole blow out preventer and method of use

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Down-hole bearing assemblies