| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 10/14/1993 | WO1993020288A2 Cut expansion joint sealing device for concrete dams and method for fitting same |
| 10/14/1993 | CA2132190A1 Underground pipe replacement method and apparatus |
| 10/14/1993 | CA2131380A1 Down reaming apparatus |
| 10/13/1993 | EP0565502A1 Pipe handling equipment and method for a rock drilling machine |
| 10/12/1993 | US5251707 Ice auger cutting head |
| 10/12/1993 | US5251701 Helical conveyor screw |
| 10/12/1993 | CA1322872C Method and an apparatus for taking soil samples |
| 10/10/1993 | CA2071326A1 Directional drilling tool |
| 10/06/1993 | EP0563950A1 Apparatus and method for directional drilling |
| 10/06/1993 | EP0563561A1 Superimposing drilling bit |
| 10/06/1993 | EP0528801A4 Pipe bursting and replacement apparatus and method |
| 10/06/1993 | EP0439600B1 Drill |
| 10/05/1993 | US5249634 Impact borer for embedding lines, anchoring cables, and sinking wells |
| 09/30/1993 | WO1993019278A1 Steerable burrowing mole |
| 09/30/1993 | DE4209695A1 Displacement method of excavating tunnel - mixes displaced soil with liq. and then subjects it to pressure to form tunnel wall. |
| 09/29/1993 | EP0562429A1 Earth boring apparatus |
| 09/29/1993 | EP0562148A1 Apparatus for guiding and steering earth boring casing |
| 09/29/1993 | EP0562147A1 Directional drilling system with eccentric mounted motor and biaxial sensor |
| 09/28/1993 | US5248004 Adjustable pipe joint |
| 09/28/1993 | US5248003 Apparatus and method for supporting the free end of a cantilever beam of a cantilevered jack-up rig |
| 09/25/1993 | CA2091609A1 Ground-boring device |
| 09/23/1993 | DE4219150C1 Underground mortar column prodn. - by drilling with auger through which hardenable suspension is fed |
| 09/22/1993 | EP0561072A1 Adjustable bent housing |
| 09/22/1993 | EP0560867A1 Tool for making holes in the ground. |
| 09/22/1993 | EP0527924A4 Underground fluid sampling system |
| 09/22/1993 | EP0481079B1 Method and tool for producing a pile |
| 09/21/1993 | US5246080 High pressure converter for deep well drilling |
| 09/21/1993 | US5246079 High-efficiency earth boring system |
| 09/21/1993 | US5246078 Protective device for thermochemical ice penetrator |
| 09/17/1993 | CA2063161A1 Adjustable bent housing ii |
| 09/16/1993 | WO1993018274A1 A method and a device for sealing between a casing and a drill hole in rock drilling operations |
| 09/16/1993 | WO1993018273A1 Downhole tool for controlling the drilling course of a borehole |
| 09/14/1993 | US5244049 Rock drilling device |
| 09/14/1993 | CA1322194C Combustion operated drilling apparatus |
| 09/08/1993 | EP0558567A1 A method for aligning a feeding beam in a rock drilling equipment and a rock drilling equipment and a measuring device. |
| 09/07/1993 | US5242027 Cleaning device for earth augers |
| 09/07/1993 | US5242026 Method of and apparatus for drilling a horizontal controlled borehole in the earth |
| 09/07/1993 | US5242025 Guided oscillatory well path drilling by seismic imaging |
| 09/02/1993 | WO1993017215A1 Method for overburden drilling, casing shoe and casing tube for the method, and coupling element for the casing tubes |
| 09/01/1993 | EP0558097A1 Boring arm |
| 09/01/1993 | EP0557379A1 Apparatus for directional drilling |
| 08/31/1993 | US5241273 Method for controlling directional drilling in response to horns detected by electromagnetic energy propagation resistivity measurements |
| 08/31/1993 | US5240353 Anchor with deoperable screw |
| 08/31/1993 | US5240352 Method for the mounting of underground pipelines |
| 08/24/1993 | US5238073 Uphole hammer |
| 08/24/1993 | US5238069 System for preventing cutting gas explosion during subterranean pipe cutting operations |
| 08/24/1993 | CA1321479C Method of pipe replacement (no.1) |
| 08/17/1993 | US5236284 Varying the position of center of gravity of bit unit |
| 08/15/1993 | CA2061240A1 Rotating head |
| 08/11/1993 | EP0554977A1 Stabilisation devices for drill motor |
| 08/05/1993 | WO1993015301A1 Whipstock for oil and gas wells |
| 08/05/1993 | WO1993015300A1 Device for positioning member and excavating direction control device for excavator employing said device |
| 08/05/1993 | DE4216472C1 Investigation of heavy metal contaminated soils - includes sealing walls of borehole using mixts. of polymeric pyrrolidinium salts with alkali silicate(s) or with bentonite-modified montan wax emulsions an limiting boring speed |
| 08/05/1993 | CA2126553A1 Whipstock for oil and gas wells |
| 08/04/1993 | EP0553908A2 Method of and apparatus for making near-bit measurements while drilling |
| 08/03/1993 | US5232058 Equipment for a drilling fitting comprising an element to be actuated, a motor and control means |
| 07/31/1993 | CA2059215A1 Hydraulic rod pusher-puller apparatus |
| 07/28/1993 | CN2139172Y Big displacement screw rod drilling tool |
| 07/28/1993 | CN2139171Y Pressing and adjusting nut lock type continuous bent casing |
| 07/27/1993 | US5230389 Fluidic oscillator drill bit |
| 07/27/1993 | US5230388 Method and apparatus for cleaning a bore hole using a rotary pump |
| 07/27/1993 | US5230387 Downhole combination tool |
| 07/27/1993 | US5230386 Method for drilling directional wells |
| 07/22/1993 | DE4209854C1 Stripper for earth auger for excavator - incorporates spring blade between turns of spiral, moving axially as spiral rotates |
| 07/21/1993 | EP0551351A1 Method and equipment for aligning the feeding beam of a rock drilling equipment. |
| 07/21/1993 | EP0551299A1 Method of drilling holes in rock. |
| 07/21/1993 | EP0198060B1 Method and apparatus for combined jet and mechanical drilling |
| 07/21/1993 | CN1074504A Process for drilling cobble layer using crowned bit and basket |
| 07/20/1993 | US5228525 Adaptor for earth boring machine |
| 07/20/1993 | CA1320480C Hydraulic drilling apparatus and method |
| 07/14/1993 | CN1021594C Intermediate pipe-jacking apparatus |
| 07/13/1993 | US5226488 Truck mounted boring system |
| 07/09/1993 | CA2059005A1 Swivel for use in conjunction with a downhole drilling motor steering tool |
| 07/08/1993 | WO1993013351A1 Soil displacement hammer for replacing underground pipes |
| 07/08/1993 | CA2127264A1 Soil displacement hammer for replacing underground pipes |
| 07/07/1993 | CN1021516C Hydraulic type pressure thruster for well |
| 07/06/1993 | US5224558 Down hole drilling tool control mechanism |
| 07/06/1993 | US5224548 Apparatus and method for retrieving lost materials in slanted boreholes |
| 06/30/1993 | EP0548900A2 Hydraulic drilling machine of telescopic tower type with a rod stowing and handling system |
| 06/30/1993 | EP0548765A2 System for soil decontamination using recoverable extraction and injection probes |
| 06/30/1993 | EP0548588A1 Device for making boreholes in the ground |
| 06/29/1993 | US5222564 Drilling unit |
| 06/29/1993 | US5222554 Whipstock for oil and gas wells |
| 06/29/1993 | CA1319675C Apparatus for vibrating a pipe string in a borehole |
| 06/24/1993 | WO1993012319A1 System for controlled drilling of boreholes along planned profile |
| 06/24/1993 | WO1993012318A1 System for controlled drilling of boreholes along planned profile |
| 06/22/1993 | US5221159 Subsurface contaminant remediation, biodegradation and extraction methods and apparatuses |
| 06/22/1993 | US5220966 Drilling apparatus of the cutting and shearing type |
| 06/22/1993 | US5220964 Downhole compaction and stabilization back reamer and drill bit |
| 06/22/1993 | US5220963 System for controlled drilling of boreholes along planned profile |
| 06/21/1993 | CA2084227A1 Recoverable extraction and injection probe for enhanced gradient remediation |
| 06/17/1993 | DE4213332C1 Drive for underground prodn. of conduits - comprises outer appts. area in which a striker and floor compressor are integrated |
| 06/16/1993 | EP0545922A1 Drilling machine table. |
| 06/10/1993 | WO1993011334A1 Downhole stabiliser |
| 06/10/1993 | CA2123700A1 Downhole stabiliser |
| 06/02/1993 | CN2135055Y Guide power drilling tool with flexible hinge |
| 06/01/1993 | US5215151 Method and apparatus for drilling bore holes under pressure |
| 05/27/1993 | WO1993010326A1 A steerable drilling assembly for mounting on the end of a drill string to drill a borehole in an underground formation |
| 05/27/1993 | CA2123889A1 A steerable drilling assembly for mounting on the end of a drill string to drill a borehole in an underground formation |
| 05/26/1993 | EP0543140A2 Drilling device for civil engineering and method for making stabilizing columns or similar structures in the ground |