Matches 201 - 250 out of 417 < 1 2 3 4 5 6 7 8 9 >

AcclaimIP-ad

Match Document Document Title
4278127 Apparatus for retrieving drill collars  
An apparatus for retrieving drill collars in an earth boring drill string when stuck. A sub is connected between two drill collars at various points. Each sub is a cylindrical member with a...
4275786 Apparatus for selectively coupling cables to well tools  
In the several representative embodiments of selectively-operable well bore apparatus disclosed herein for dependently coupling a well tool to a suspension cable, a collapsible assembly of two or...
4266613 Arming device and method  
There is disclosed an arming and disarming device which is run into a well bore on a wireline and which is part of an explosive tool to conduct some type explosive operation in the well bore. In...
4254828 Apparatus for producing fractures and gaps in geological formations for utilizing the heat of the earth  
A method of producing fractures or gaps in geological formations of crystalline rocks in order to utilize the heat of the earth surrounding the gaps, comprises, drilling at least one bore into the...
4250960 Chemical cutting apparatus  
An improved chemical cutting apparatus for cutting objects in well bores such as, for example, tubing in the bore of an oil or gas well. The apparatus is properly positioned relative to the object...
4248303 Explosive well-fracturing system  
Method of and apparatus for fracturing and creating multiple fissures in hydrocarbon impregnated rock. The invention uses a sequence of explosive charges involving a main, centrally located high...
4180131 Chemical cutting apparatus for use in wells  
A chemical cutting apparatus and method for cutting objects in well bores such as, for example, tubing in the bore of an oil or gas well. The apparatus is properly positioned and an igniter is...
4160412 Earth fracturing apparatus  
An earth fracturing apparatus has a casing of reactive metal containing a central, double ended charge load that is simultaneously detonated from both ends; and a pair of opposed end charges at...
4148375 Seismic vibration source  
A system for vibrating the earth in a location where seismic mapping is to take place, including forming a relatively shallow hole in the earth such as a hole 10 feet deep, placing a solid...
4140188 High density jet perforating casing gun  
A high density perforating gun having series connected multiple gun housings within which a plurality of jet perforating shaped charges are arranged in spaced apart clusters. The charges of each...
4103743 Method and means of treating water wells  
A method and means for chemically treating water wells to increase the production thereof. Liquid chemical, usually acid, is initially placed in the well through the water discharge conduit of the...
4102412 Apparatus and method for placing explosives in submerged rock  
So that explosives can be placed in an underwater hole in rock efficiently, a rock drilling machine having a rock drill mounted for extension and retraction on a strut which can be forced against...
4091870 Method for generating horizontal fractures in a wellbore  
A method for generating a horizontal fracture through a wellbore by causing two explosively induced shear waves to intersect. This is achieved by placing, within a coupling fluid within a...
4081031 Oil well stimulation method  
A method of stimulation oil well production uses a gas generating chemical charge that is placed in the oil well bore at a depth of known oil productivity where it is ignited to generate a gas...
4074762 Wireline running tool  
A wireline running tool enables a module to be lowered into or removed from a production tubing or pipe line, especially one extending downhole in an oil or gas well. A kickover arm in the tool...
4071096 Shaped charge well perforating apparatus  
Apparatus for perforating a well comprised of a closed retrievable carrier formed in an elliptic cylindrical shape and having shaped charge perforating means disposed therein. Upon actuation of...
4064941 Apparatus and method for mixing separated fluids downhole  
A method and apparatus are disclosed for mixing two previously separated fluids at a downhole location adjacent a predetermined formation interval.
4064935 Oil well stimulation apparatus  
Apparatus for stimulation of oil well production utilizes a gas generating chemical charge that is placed in the oil well bore at a depth of known oil productivity and ignited to produce a gas...
4063509 Device for stimulation of geothermal wells  
A device comprising an outer shell, open at one end, a charge carrier for carrying shaped charges suspended within the outer shell and means for releasing gas suspended within the outer shell used...
4049056 Oil and gas well stimulation  
A method for stimulating oil and gas wells to increase production including filling the lower portion of the well above the pay zone level having exposed rock with a fracturing fluid, and sealing...
4042019 Wireline actuated tubing cutter  
An apparatus adapted to be run into a well on a wireline for explosively cutting tubing having an explosive cutting member mounted with a body member connected to the wireline, a settable hanging...
4031826 Detonation system and method  
A remotely situated detonator is acoustically triggered to detonate explosives. Conduit means capable of propagating an acoustic wave is used to transmit a precoded acoustic wave signal from a...
4030547 Apparatus for cryothermal fracturing of rock formations  
Apparatus and method for cryogenic flash freezing of confined water in a rock formation with concomitant fracturing of the rock formation utilizes an anchoring device comprising gripping means...
4018293 Method and apparatus for controlled fracturing of subterranean formations  
Method and apparatus for controlled fracturing of a portion of the earth's formations intermediate predetermined depths characterized by positioning adjacent the portion to be fractured explosive...
4007790 Back-off apparatus and method for retrieving pipe from wells  
A new and improved apparatus and method for lowering the apparatus downwardly in a drill string on a wireline to releasably engage a recess in a threaded joint or collar of the drill string to...
3990512 Method and system for ultrasonic oil recovery  
This invention relates generally to petroleum well treatment and more particularly to improvement of production from earthen petroleum reservoirs of low permeability by fracturing the petroleum...
3990507 High temperature perforating apparatus  
A high temperature well completion method is carried out by releasably suspending a perforating gun uphole in a relative low temperature region of the borehole. A wireline actuated releasable...
3962837 Apparatus for expandably engaging the walls of an earthen hole  
An apparatus is provided for expandably engaging the walls of an earthen hole in order to resist movement urged by an external force. After placement of the apparatus into an earthen hole at a...
3948321 Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same  
Method and apparatus for emplacing a liner in a conduit in a well penetrating subterranean formations characterized by suspending at a predetermined depth in the well at least one annular liner...
3937278 Self-propelling apparatus for well logging tools  
A self-propelling apparatus for well logging tools includes a housing which is secured to the housing of a well logging tool and which defines a cylinder. A piston is slidably received in the...
3912013 High temperature perforating method  
A high temperature well completion method is carried out by releasably suspending a perforating gun uphole in a relative low temperature region of the borehole. A wireline actuated releasable...
3902422 Explosive fracturing of deep rock  
Producing a fracture network in deep rock, e.g., in an ore body, by detonating explosive charges sequentially in separate cavities therein, the detonations producing a cluster of overlapping...
3872925 THROUGH-TUBING BRIDGE PLUG  
Method and apparatus for emplacing a bridge plug through tubing in a well penetrating subterranean formations characterized by the following plurality of steps, without requiring removal of the...
3848674 METHOD AND APPARATUS FOR FRACTURING OIL AND GAS STRATA  
A high pressure pipe has its lower end sealed in a well bore, and dispersed outlets are formed explosively through the pipe and seal at a fuel producing stratum of the well. A mechanically driven...
3800876 METHOD FOR DISLODGING A PIPE STRING  
Described is a method used in freeing a pipe string stuck in the bore of a well. An inflatable packer and setting tool are run through the string to a position just below the lowermost free...
3797576 METHOD AND APPARATUS FOR BREAKING UP ROCKS CONTAINING LIQUID OR GASEOUS HYDROCARBONS BY MEANS OF EXPLOSIVES  
Oblique holes are drilled into a formation from a well bore hole, packed with explosive charges, and simultaneously detonated. The holes are drilled at the same level and angle with respect to the...
3766979 WELL CASING CUTTER AND SEALER  
Apparatus for rapidly terminating flow through a well upon sensing of an unsafe well condition. A housing surrounds the well casing and defines a chamber within which a blade is located with its...
3750440 TUBING SWAGE UTILIZING EXPLOSIVES  
A system for swaging a flared end of an oil well tubing. A ring of explosive material is placed in an inwardly collapsed condition and transported through the tubing. After the explosive material...
3746091 CONDUIT LINER FOR WELLBORE  
A liner for emplacement in a conduit in a well penetrating subterranean formations characterized by an annular body portion having substantially cylindrical interior and exterior surfaces that are...
3744579 EROSION WELL DRILLING METHOD AND APPARATUS  
A method for drilling deep wells, which includes lowering a high pressure pipe with a nozzle at its bottom down the well, filling the lower half of the pipe with a fluid, pumping an ignitable gas...
3721297 METHOD FOR CLEANING WELLS  
A combination of repeated mild explosions and a series of pressure pulsations provides both repetitive shock and repetitive sustained fluid pulsations. The shock is required to break up and loosen...
3713393 IGNITER MECHANISM FOR SOLID PROPELLANTS UNDER HIGH FLUID HEAD  
An igniter is describe capable of operating at high bottomhole pressures, i.e., greater than 2,000 psi. To prevent the influx of well fluids into the recess which has been drilled into a portion...
3712376 CONDUIT LINER FOR WELLBORE AND METHOD AND APPARATUS FOR SETTING SAME  
A method of emplacing a liner in a conduit in a well penetrating subterranean formations characterized by positioning with a wire line a cylindrical annular liner at a given depth in the well, the...
3712378 WIRE LINE METHOD AND APPARATUS FOR CLEANING WELL PERFORATIONS  
Sand control operations in cased and perforated wells equipped with a tubing string such as a production tubing string, are improved by first cleaning the perforations by lowering a tool...
3690378 WELL COMPLETION METHOD AND APPARATUS FOR EXPLOSIVE STIMULATION  
Disclosed is a method and apparatus for preventing damage to the tubular goods and cement sheath of wells during an explosive stimulation treatment. The invention includes the use of honeycomb...
3690379 PLACEMENT AND DETONATION METHOD FOR EXPLOSIVE FRACTURING  
A method of oil or gas well stimulation wherein a liquid explosive is injected into the formations and subsequently detonated. An explosive charge is placed proximate the formations containing the...
3684008 WELL BORE BLOCKING MEANS AND METHOD  
A blow-out preventer comprising a relatively large body means which is placed in a well bore. The body means is provided with a bore through which drill pipe and the like can extend. Traversing...
3674093 METHOD AND APPARATUS FOR STIMULATING THE FLOW OF OIL WELLS  
A method for stimulating the flow of oil wells consisting of sealing off a portion of the well shaft within the oil-bearing formation of the ground, introducing a combustible fuel not requiring...
3648612 METHOD OF CONDUCTING STRING SHOT OPERATIONS IN AN OIL WELL  
String shot apparatus and method of servicing perforated well casing using one or more explosive cords supported along a wire line and equipped with discriminator means for detonating the cords...
3648785 ELECTRO-HYDRAULICALLY CONTROLLED PERFORATOR  
A plurality of explosive charges are positioned in an instrument to be lowered into a well. An electrical detonation system is connected to each explosive charge. A hydraulic system controls...
Matches 201 - 250 out of 417 < 1 2 3 4 5 6 7 8 9 >