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7387176 |
A down hole air diverter having a first opening in communication with the central passageway of a drillstring; a second opening in communication with the well bore annulus; and a means to control the flow of pneumatic fluid between the f...
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7281593 |
A method for the circulation of gas when drilling or working a well. The method includes the step of pressurizing at least two chambers of a multi-chambered accumulator with inert gas. The chambers of the multi-chambered accumulator are ...
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7140455 |
A valve ( 30 ), a drill string valve assembly ( 10 ) and a method of drilling using compressed fluid as a drill drilling fluid are described. The valve and valve assembly ( 10 ) may be used in order to prevent escape of compressed fluid ...
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7073589 |
A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to t...
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6973885 |
A mobile treatment system for subterraneously aerating and stimulating root zones with a probe. Suitable controls enable the operator to mix liquid root stimulator solution within a storage tank, and then pump it into the ground through ...
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6843331 |
A method and apparatus for controlling drilling mud density at a location either at the seabed (or just above the seabed) or alternatively below the seabed of wells in deep water and ultra deep water applications combines a base fluid of...
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6808693 |
Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the formations as a gas blocking mechanism for incr...
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6801814 |
The present invention is directed to a system and method provided for electronic gathering, monitoring, analyzing, managing, and utilizing of grouting information in order to facilitate and control drilling, testing, installation of grou...
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6722436 |
A method and apparatus for controlling the operation of an internal combustion engine to reduce the presence of free oxygen in the exhaust gas of the engine. The method and apparatus provides for the internal combustion engine to be oper...
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6662885 |
Disclosed is a method of producing a pressurized stream of substantially inert gas. The method comprises collecting the exhaust gases from an internal combustion engine, directing the exhaust gases into the intake of a compressor for com...
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6648084 |
The invention provides a head for injecting a liquid under pressure from a borehole to break up the soil, said head being mounted at the end of a drill string including a liquid feed for feeding a liquid under pressure. The head comprise...
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6637522 |
An apparatus and method is provided for substantially continuously drilling and disposing of drill cuttings and dust to minimize airborne contamination while providing protection against overload using enhanced computer control. A drill ...
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6536540 |
A method and apparatus for controlling drilling mud density at or near the seabed of wells in deep water and ultra deep-water applications combines a base fluid of lesser density than the mud required at the wellhead to produce a diluted...
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6520256 |
A downhole cementing system employing a cement choke within the casing to reduce the downward velocity of cement through the casing and thereby inhibit formation fracturing caused by vibration of the casing. The cement choke includes a t...
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6467558 |
Three air hammers are housed and arranged in a hammer case, and have bits at their respective ends. Each of the air hammers can be activated independently. In a normal excavation, the earth is excavated by activating all the air hammers....
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6443245 |
A method for enhancing gas or oil production by delivering a nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located.
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6347675 |
A method for increasing the efficiency of drilling operations by using a drilling fluid material that exists as supercritical fluid or a dense gas at temperature and pressure conditions existing at a drill site. The material can be used ...
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6267186 |
The method for releasing the stuck pipe of the present invention uses a combination of components which oxidize the mud cake and generated gas bubbles to create an upward buoyancy for the oxidized mud cake. The spotting method of the pre...
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6231270 |
A method and apparatus for creating a hole in a soil body. The apparatus includes an open ended tube, a conduit with a nozzle is arranged within the tube. The nozzle has a downwardly facing opening for applying a stream of compressed air...
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6206113 |
A method for enhancing gas or oil production by delivering a nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located.
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6041873 |
A method for enhancing gas or oil production by delivering a nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located.
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6032747 |
A method and an apparatus is provided for use in an underbalanced drilling process using exhaust gases wherein some constituents of the exhaust gas combine with water to form acids. The present invention provides a means of deacidifying ...
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5944122 |
A flushing system for supplying compressed flushing air to a drill string for flushing cuttings during a drilling operation includes an air compressor having an inlet valve at the compressor inlet, and a turnvalve at the compressor outle...
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5890549 |
A well drilling system for drilling with gaseous drilling fluid, particularly natural gas, in a closed circulation path including an enclosure or bell nipple mounted on a wellhead between the wellbore and a rotary control head for the dr...
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5875858 |
An air-water mist flushing system and method for cooling and cleansing mining tool cutter elements having sources of water and compressed air, apparatus for admixing water and compressed air at predetermined volumes and pressures to form...
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5865261 |
A casing or tubing segment or segments are disclosed which can be used to create a parasite annulus during drilling. The cased wellbore receives a string containing valves and the drillstring operates through it. As the mud circulates, t...
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5862869 |
A method for enhancing gas or oil production by delivering a nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located.
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5775442 |
The drilling fluid returns from underbalanced drilling are introduced into a separator and a separate gas stream is recovered. The gas stream is cleaned at the well site to remove entrained liquid and particulate solids, to produce gas s...
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5749422 |
A method for enhancing gas or oil production by delivering nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located.
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5663121 |
A method and apparatus is provided for use in underbalanced drilling of a well bore. A stream of substantially inert gases is provided by cooling, treating and compressing a stream of exhaust gases. The exhaust gases are cooled to a temp...
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5584352 |
A pneumatic drilling chip removal system for removing drilling chips from a well bore, comprising sub-surface drilling equipment having a plurality of components and a drilling bit, a central passageway extending through the components a...
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5515932 |
Apparatus and method for environmental surveying and prospecting for contaminants in alluvial materials and bedrock formations including using a portable pneumatic rotary percussion drilling machine, preferably pneumatic, having a gas ci...
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5497841 |
A masonry coring system for drilling vertical holes in a masonry wall comprises a drill bit in the form of a thin-walled cylinder having a cutting end face, a plurality of cutting elements fastened to the cutting end face, and a core bre...
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5490571 |
This invention concerns an accessory, to be inserted in a drill string behind a drill bit, to provide separation of the liquid and air components of a flushing medium. The accessory comprises an inner housing (36) within an outer housing...
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5409072 |
A method and an arrangement for controlling the supply of air into a rock drilling machine. In the method, the air supply of an air compressor in a power unit operated by a diesel engine is adjusted so that when the percussion pressure o...
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5407020 |
A pneumatic drilling chip removal system for removing drilling chips from a well bore, comprising sub-surface drilling equipment having a plurality of components and a drilling bit, a central passageway extending through the components a...
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5407019 |
Apparatus and method for environmental surveying for contaminants in alluvial materials and bedrock formations including using a portable pneumatic rotary percussion drilling machine with an air compressor that powers the drilling and pr...
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5388650 |
There is disclosed a method for oil or gas drilling or the drilling of a geothermal well and the like in which a compressed inert gas, produced by the non-cryogenic separation of air is delivered to the drilling region of the downhole.
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5307883 |
A method is specified for reversing a compressed air-driven ramming device for its control positions of forward running and rearward running in the earth, wherein, for reversal, a turning is performed against a relatively small detaining...
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5273344 |
A process of inerting the coal mine site formed by a coal cutting auger or continuous miner at a coal face to supress methane/coal dust explosion includes introducing an inert gas such as waste gases of combustion or nitrogen, for exampl...
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5193627 |
A forward and rearward running ramming device includes: a housing having a percussion head in which a percussion piston a axially displaced by compressed air; a control device for controlling the compressed air so that, during forward ru...
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5135058 |
Apparatus for in-situ treatment of contaminated soil that includes an elongated hollow drive shaft mounted for rotation about its axis while being supported in vertical orientation. The upper end of the drive shaft is connected for selec...
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5116104 |
A method for breaking coal and other mineral matter from a bed thereof provided with a bore hole consists of the steps of applying a flushing medium to a drill bit, loosening the mineral matter upon completing the drilling by conveying t...
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5048620 |
An apparatus for air rotary drilling in saturated unconsolidated deposits. It consists of a drill rod connected to a drill bit and a drill casing surrounding the drill rod which defines a well in a drilled region. A pressurized air sourc...
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4981182 |
A sealed rotary drill bit has a plurality of leg members, with each leg member having a projecting conical cutter receiving journal. A conical cutter has friction reducing bearings interior to the conical cutter for rotatably mounting th...
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4958689 |
A manually operated downhole for an underground earth boring apparatus having a pneumatically operated earth boring tool. A drill pipe is connected to the tool and to a source of pneumatic fluid. A valve is positioned in the drill pipe s...
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4955439 |
A fluid-operated self-propelled subsoil penetrating tool of the type including an elongated housing member having a penetrating nose portion capable of ejecting a jet of liquid under high pressure to break up and disrupt the subsoil adja...
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4936397 |
An earth drilling apparatus has a pneumatic motor operated earth drilling tool, a valve assembly connected to the motor, and a drill string connected to the valve and to a source of pneumatic fluid. The drilling tool has an earth drillin...
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4880065 |
A new and improved air motor operated rotary earth drilling tool for use with a source of high pressure, high volume compressed air has a circulation control housing, a motor housing, a reduction gear housing, and a bearing housing conne...
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4765416 |
In a subterranean drilling operation, a drill stem and drill bit are advanced downwardly while conducting compressed air downwardly through the drill stem. A minor part of the air flow is discharged from the drill bit downwardly against ...
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