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7013977 Sealed connectors for automatic gun handling  
A sealed perforating gun assembly for use with automatic pipe handling equipment on oil and gas drill rigs. An upper sealed connector and a lower sealed connector have sealed threaded connections...
7007756 Providing electrical isolation for a downhole device  
An isolation apparatus is provided between an electrical conductor and an electrically-activated well tool. The isolation apparatus has a blocking element to enable a signal having a first...
7004257 Apparatus and methods for separating and joining tubulars in a wellbore  
The present invention provides methods and apparatus for cutting tubulars in a wellbore. In one aspect of the invention, a cutting tool having radially disposed rolling element cutters is provided...
7000699 Method and apparatus for orienting perforating devices and confirming their orientation  
The present invention provides an apparatus and method of orienting perforating gun strings. One embodiment of the present invention provides an orienting weight provided in a portion of the...
6971449 Borehole conduit cutting apparatus and process  
The apparatus is used for cutting an opening through the wall of a conduit located in a borehole traversing the subsurface formations. The apparatus includes a body adapted to be lowered into the...
6966377 Providing a low pressure condition in a wellbore region  
An apparatus and method includes positioning a string in a wellbore, the string having a surge chamber. A closure member is provided below the well surface, with the surge chamber defined at least...
6962203 One trip completion process  
A process and assembly for completing and providing sand control in a subterranean well and/or fracturing and preventing proppant flowback in a subterranean formation in a single trip. One or more...
6942034 Extent of detonation determination method using seismic energy  
A method of determining the extent of detonation of a Well Perforating Gun is disclosed. The Perforating Gun is positioned in a borehole and the detonation is initiated at one point on the...
6942033 Optimizing charge phasing of a perforating gun  
A technique that is usable with a subterranean well includes orienting shaped charges of a perforating gun to extend partially around a longitudinal axis of the gun. The perforating gun is...
6926096 Method for using a well perforating gun  
The invention relates to a method to use a perforating gun in oil and natural gas wells, comprising: a perforating gun with a loading tube and explosive charge; the gun comprises: a first layer...
6925937 Thermal generator for downhole tools and methods of igniting and assembly  
An ignition device for a downhole tool includes a body with a cavity, a thermite material and a resistive element within the cavity. The resistive element, which is heated to the high temperature...
6926080 Operation method of an oil well pumping unit for well development and device for performing said operation method  
The invention relates to pumping units for extraction oil from oil wells comprising, all of them being installed on the piping string, a packer, a back pressure valve, a jet pump having the active...
6896059 Components and methods for use with explosives  
An apparatus and method is provided to reduce interference resulting from activation of explosive devices. To reduce interference, one or more shock impeding elements are placed proximal one or...
6880631 Whipstock casing milling system  
This invention relates to a whipstock casing milling system and, more particularly, to such a system in which a window mill is secured to a whipstock so that the system may be run into a well, set...
6880637 Full bore automatic gun release module  
A well completion procedure and apparatus comprises a first assembly that includes production tubing combined with a production packer and an internal bore latching profile. A second assembly...
6877562 Oil well perforator  
This invention relates to the field of oil wells and in particular to the explosive and other devices that are used to perforate oil well casings and hydrocarbon bearing rocks in order to create...
6865792 Method for making a well perforating gun  
The invention relates to a method to make a perforating gun for use in oil and natural gas wells comprising the steps of: obtaining a length of a first tube; cutting scallop holes into the first...
6843320 Downhole tool with ratcheting swivel and method  
A system for perforating a well includes a perforating gun 10 and a swivel 12 suspended from a wireline 50. An orientation sub 14 is provided above the gun 10 and a rotational latching mechanism...
6843318 Method and system for determining the position and orientation of a device in a well casing  
A method and system for activating a device at a particular orientation in a casing are disclosed. The casing has a bias, for example a lower side due to tilt, that defines a default angle in the...
6840320 Method and apparatus for forming an optimized window  
Methods and apparatus are described for forming a window of optimum dimensions in casing wall. A window of maximum width is cut when the center line of the mill tool is located inside of the inner...
6837310 Intelligent perforating well system and method  
An instrumented perforating gun and associated methods. One aspect provides a recess for placement of instruments on the perforating gun. Another aspect provides methods for perforating and...
6834721 System for disconnecting coiled tubing  
A disconnect system for coiled tubing. A first end of the coiled tubing is disconnected from a second end of the coiled tubing by holding the coiled tubing in a stationary position at a first and...
6827144 Method for reducing sand production  
A method for optimally orienting perforations in a subterranean formation is disclosed, the optimization process being based on establishing the orientation of bedding planes in the formation and,...
6820693 Electromagnetic telemetry actuated firing system for well perforating gun  
A perforating gun assembly for use in a subterranean well incorporates therein an electromagnetic frequency receiver coupled to a motor section which, in turn, is coupled to the mechanically...
6805196 Expander  
A tubing expander (10) comprises a body (12) carrying a plurality of radially movable piston-mounted rollers (24) and associated sleeves (16) mounted about the body (12) and being radially...
6805056 Method and apparatus for removing abandoned tubular members  
A method and apparatus for removing a tubular member (e.g., leg of an abandoned or obsolete fixed platforms in a marine environment) is provided. The apparatus includes a delivery system having a...
6786282 Milling apparatus and method for a well  
A downhole system includes a deflector with a reaction surface that is engageable to a mill. The deflector is coupled to a motion mechanism that is activable to move the deflector generally along...
6779605 Downhole tool deployment safety system and methods  
A safety system controls the activation of one or more downhole tools by providing selective transmission of an activation signal or an energy stream. In a preferred embodiment, transmission of...
6761219 Casing conveyed perforating process and apparatus  
A process and apparatus for completing a subterranean well bore in at least one subterranean formation. At least one perforating gun assembly is positioned on the outside of casing in a...
6745834 Complete trip system  
The present invention discloses apparatus and methods for perforating, completing, testing, and abandoning a wellbore in a single trip. One embodiment of the invention is a method that comprises...
6732798 Controlling transient underbalance in a wellbore  
A method and apparatus for controlling a transient underbalance condition is provided. Transient underbalance can be enhanced by using a porous material, such as a porous solid, around the...
6729406 Method and apparatus for performing cutting operations in a subterranean well  
Apparatus and associated methods of using the apparatus are disclosed for performing cuts in a subterranean well. The apparatus utilizes linear shaped charges arranged in an endless pattern which...
6725927 Method and system for avoiding damage to behind-casing structures  
A structure is positioned on the outer surface of a casing or liner to enable cutting the casing in substantially any azimuth over a given length of casing without damaging the structure. After...
6722424 Hydraulic firing head  
A downhole tool hydraulic firing head includes an automatic drain that is opened when the piston is driven to fire. The automatic drain includes a vent opening from the bore and a sleeve disposed...
6722435 Window forming by flame cutting  
A tool containing a solid combustible material is used to provide a pipe-cutting flame and to direct a pipe-cutting flame against a casing or tubular. The nozzles can be configured in any desired...
6719042 Shear ram assembly  
The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially...
6708762 Methods and apparatus for forming a lateral wellbore  
The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the...
6708761 Apparatus for absorbing a shock and method for use of same  
An apparatus (60) for absorbing a shock comprises a first tubular member (62) and a second tubular member (80) that are slidable positioned relative to one another. A plurality of layers (94-104)...
6695056 System for forming a window and drilling a sidetrack wellbore  
The present invention discloses and claims a system for forming an opening, or window, in a downhole tubular for the subsequent formation of a lateral wellbore. In the system of the present...
6684954 Bi-directional explosive transfer subassembly and method for use of same  
A bi-directional explosive transfer subassembly (56) for coupling two explosive tools (52, 54) comprises first (74, 78) and second (76, 80) explosive carrying members that respectively define...
6679327 Internal oriented perforating system and method  
One embodiment of the present invention discloses a system and method for orienting perforating guns inside of slanted or deviated wellbores. The invention involves adding a weight inside of the...
6675893 Single placement well completion system  
A single placement well completion system wherein a perforating gun is vertically positioned alongside a filter in a cased subterranean well. The position of the filter and perforating gun remains...
6675896 Detonation transfer subassembly and method for use of same  
A detonation transfer subassembly for coupling two detonation activated tools in a work sting such that the work string may be severed between the two detonation activated tools without risk of a...
6672405 Perforating gun assembly for use in multi-stage stimulation operations  
A perforating gun assembly for use in perforating multiple intervals of at least one subterranean formation intersected by a cased wellbore and in treating the multiple intervals using a diversion...
6668930 Method for installing an expandable coiled tubing patch  
The present invention provides methods for expanding coiled tubing within a wellbore in order to form a patch. In one aspect, an expansion assembly is run into the wellbore at the lower end of a...
6658981 Thru-tubing stackable perforating gun system and method for use  
A stackable thru-tubing perforating gun system for use in perforating in a large diameter cased wellbore below a smaller diameter production tubing string. The system comprises a thru-tubing...
6644407 Indirect hydraulic fracturing method for an unconsolidated subterranean zone and a method for restricting the production of finely divided particulates from the fractured unconsolidated zone  
An improved hydraulic fracturing method for fracturing an unconsolidated zone in a subterranean formation by fracturing a nearby consolidated zone to form a fracture which extends into the...
6637507 Apparatus for continuously perforating in oil wells  
The invention relates to a process for continuously perforating in a wellbore comprising the following steps of determining a location to be perforated in the wellbore proximate an oil formation;...
6601648 Well completion method  
An improved method of completing unconsolidated subterranean formations is provided whereby the necessity of expensive high density brine completion fluids is eliminated. Also, the drilling rig...
6598682 Reservoir communication with a wellbore  
A method and apparatus for improving reservoir communication includes, in one arrangement, use of one or more chambers to create an underbalance condition and/or a fluid surge in the wellbore. In...