LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Enhanced circulation drill bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Enhanced circulation drill bit

Boring or penetrating the earth – Automatic control – Of fluid pressure below ground

Enhanced computer control of in-situ drilling system

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Enhanced cross-flow with two jet drilling

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Plural cutter elements longitudinally relative movable into...

Enhanced diameter clean-out tool and method

Boring or penetrating the earth – Processes

Enhanced drill bit lubrication apparatus and method

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Enhanced offset stabilization for eccentric reamers

Boring or penetrating the earth – Processes – Sampling of earth formations

Enhanced screen auger sampling system

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

Enhancement of drill bit seismics through selection of...

Boring or penetrating the earth – Processes – Boring with specific fluid

Enhancing liquid jet erosion

Boring or penetrating the earth – Processes – Boring with specific fluid

Enlarged bore hole drilling method

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Enlarged bore hole drilling method and apparatus

Boring or penetrating the earth – Processes – Boring with specific fluid

Enlarged borehole drilling method and apparatus

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...

Enlargement drilling system

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Enlarging well bores having tubing therein

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Entrainment fluid channeling device for a down-hole drill...

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – With installing casing

Environmentally friendly horizontal boring system

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Equi-pressure geosteering

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Equipment for a drilling fitting comprising an element to be act