Matches 151 - 200 out of 396 < 1 2 3 4 5 6 7 8 >


Match Document Document Title
7571769 Casing window milling assembly  
Casing window milling assemblies include a conically-shaped section disposed along the tubular of the assembly. This conically-shaped section is a non-cutting portion that is preferably tapered...
7568525 Method and system for increasing well rate using well-capital-string perforation  
The method of wells production rate increase which includes lowering the hydroperforator equipped with hydromonitor nozzles into the well on the pipe string; pumping liquid with abrasive material...
7562700 Wireline supported tubular mill  
A milling assembly can be delivered downhole on wireline. Once at the desired location, a processor extends centralizing and driving wheels to initially position the assembly. The assembly has a...
7559371 Method and apparatus for centralizing through tubing milling assemblies  
A through tubing centralizer is delivered below the tubing and expanded against a surrounding tubular for fixation. In a window milling through tubing application, a whipstock is delivered through...
7546876 Method and apparatus for jet-fluid abrasive cutting  
A method and apparatus for down hole abrasive jet-fluid cutting, the apparatus includes a jet-fluid nozzle and a high pressure pump capable of delivering a high-pressure abrasive fluid mixture to...
7545635 Covering apparatus for expansion slot  
A covering apparatus for covering an expansion slot of a rear panel of a computer enclosure, includes a receiving box mounted to the rear panel at a first end of the expansion slot, and an...
7540327 Abrasive jet cutting system and method for cutting wellbore tubulars  
An embodiment of a cutting tool positionable in a tubular for creating a cut in a tubular includes a body securable within the tubular and a cutting head having a nozzle for discharging a...
7537055 Method and apparatus for forming a window in a casing using a biasing arm  
A method of cutting through a tubular, in particular, a casing at a selected location in a wellbore using a remotely controlled electrically powered cutting tool that comprises (a) a tool body,...
7527100 Method and apparatus for cutting and removal of pipe from wells  
A method and apparatus for down hole cutting of pipe, such as casing and other tubular goods, and plugging and abandonment of wells, without the need for a drilling or work over rig. An adjustable...
7523785 System for injecting a substance into an annular space  
A system for injecting a substance into the annular space surrounding a well tubular with an assembly to be inserted into a well tubular. The assembly includes a cutting part capable of making a...
7487835 Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling  
A method is provided that allows the operator to re-enter a primary wellbore from a lateral wellbore after the lateral wellbore has been completed. The method generally comprises the steps of...
7467661 Downhole perforator assembly and method for use of same  
A downhole perforator assembly (10) for establishing communication between the interior of a tubular string (18) and a surrounding annulus (24) includes a downhole power unit (100) having a power...
7455110 In-situ creation of drilling deflector  
A lateral exit in a casing is formed by starting with a shaped charge to produce a semi-circular cut of about 180 degrees in the casing. A spreader tool pushes in opposed directions at opposed...
7451818 Method of reducing sand production from a wellbore  
A method is provided for the reduction of inflow of rock particles from an earth formation into a wellbore for the production of hydrocarbon fluid. The method comprises creating a zone of reduced...
7422060 Methods and apparatus for completing a well  
Methods and tools are described to reduce sanding including the steps of fracturing the cement sheath in a localized zone around the casing and having the fractured zone act as sand filter between...
7409992 Perforating gun  
The present invention provides an apparatus for use in perforating a well having a plurality of explosive charges. Each explosive charge is adapted to generate a perforation tunnel in the...
7387163 In-situ landfill gas well perforation method and apparatus  
The present invention relates to a method and apparatus for perforating a landfill gas well in situ. The invention allows for improved recovery of gas from a gas well without the danger of explosion.
7380603 Well abandonment apparatus  
A well abandonment apparatus is described. The apparatus can be run on drillstring and does not require the use of explosives to sever the casing. The apparatus includes both a cutting device to...
7370703 Downhole hydraulic pipe cutter  
The casing cutter disclosed herein is useful for severing downhole tubulars and comprises a body, slips, a cutting head, cutting blades, and actuators for operating the cutting head and cutting...
7370702 Single mill casing window cutting tool and method  
An apparatus for cutting a window in a casing pipe in a well, having only a single mill with full gage primary cutting inserts of a very hard, highly wear resistant, material. The primary inserts...
7367396 Blowout preventers and methods of use  
Methods and apparatuses for severing a wellbore tubular, the apparatus, in certain aspects, including: a first member movable toward a tubular to be severed; a second member with a second blade...
7357182 Method and apparatus for completing lateral channels from an existing oil or gas well  
A method and apparatus for completing a lateral channel from an existing oil or gas well includes a well perforating tool for perforating a well casing at a preselected depth, and a lateral...
7325631 Mill and pump-off sub  
A downhole mill includes a plurality of cutters extending generally radially from a center region to a gage diameter, wherein the plurality of cutters includes a first serrated cutter blade having...
7325612 One-trip cut-to-release apparatus and method  
Apparatuses and methods allow a downhole anchor device to be cut, released, and retrieved using a single one-trip cutter and removal assembly. The assembly preferably includes a cutter head...
7308940 Flexible wellbore broach  
A method and apparatus for milling and/or broaching within a wellbore. A flexible broach runs into the wellbore and is located adjacent a portion of the wellbore to be broached. The broach...
7296625 Methods of forming packs in a plurality of perforations in a casing of a wellbore  
The invention provides a method of forming packs in a plurality of perforations in a casing of a wellbore, the method comprising the steps of: (a) forming a plug of a plugging particulate material...
7278484 Techniques and systems associated with perforation and the installation of downhole tools  
A technique to install a tool in a well includes running the tool into the well and fixing the tool to the well with a fixing agent without pumping the fixing agent through a central passageway of...
7278486 Fracturing method providing simultaneous flow back  
A bottom-up method of fracturing a multi-zone subterranean formation intersected by a wellbore that enables one zone to be fractured while at the same time flowing previously placed fracture fluid...
7273099 Methods of stimulating a subterranean formation comprising multiple production intervals  
A method of stimulating a production interval adjacent a well bore having a casing disposed therein, that comprises introducing a carrier fluid comprising first particulates into the well bore,...
7255172 Hydrodynamic, down-hole anchor  
A method of removably anchoring well tubing in a well bore may include selecting a well having a bore diameter and an anchor positioned therein. The anchor may have a housing defining an anchor...
7231979 Short radius whipstock system  
A short radius exit from a window milled in casing is possible using a whipstock with a sloping surface in excess of 3.5° and a window mill whose diameter is reduced to a percentage generally...
7225873 Coiled tubing cutter  
A cutting module to sever a tubing in a well includes a piston and shear blade. The piston includes at least two moveable telescoping elements, which are adapted to expand the first piston from a...
7225872 Perforating tubulars  
A device for perforating a tubing string residing in a well bore includes a tubular housing adapted to pass through the tubing string. At least one perforating body is provided residing in the...
7225869 Methods of isolating hydrajet stimulated zones  
The present invention is directed to a method of isolating hydrajet stimulated zones from subsequent well operations. The method includes the step of drilling a wellbore into the subterranean...
7225867 Liner top test packer  
A liner hanger test packer assembly includes an axially translated liner top dressing mill having a calibrated shear mechanism for securing the mill at a first, top dressing position. Tool string...
7213648 Pressure-actuated perforation with continuous removal of debris  
Openings are created between a wellbore and a formation by firing a perforating gun adjacent a perforating zone in the formation and debris is removed. A tubing string extending to the formation...
7195066 Engineered solution for controlled buoyancy perforating  
The weight of a shaped charge carrier is predetermined as a buoyancy control parameter for perforating guns. Each charge carrier comprises a co-axial assembly of inner and outer carrier units....
7195067 Method and apparatus for well perforating  
Apparatus for cutting openings in a wall of a well. The apparatus includes a mandrel with a jetting sleeve slidably disposed about the mandrel. The mandrel has a plurality of slots defined therein...
7178598 Device for a hydraulic cutting tool  
A device for a hydraulic cutting tool (30) for cutting of at least one pipe (16, 18, 20) or tubular object beneath a water floor (10), wherein the cutting is carried out from a surface facility...
7178609 Window mill and drill bit  
A method and apparatus for running a whipstock into a well bore attached to a combination mill and drill bit, releasing the mill/bit from the whipstock, milling a window in the casing, and...
7168491 Perforation alignment tool for jet drilling, perforating and cleaning  
Method and apparatus are provided for pumping operations that may be used to form perforations in the casing of a well, clean perforations and drill drain holes through perforations. A plunger is...
7156170 Methods and apparatus for severing nested strings of tubulars  
An apparatus and method for use in severing casing as it is pulled from a wellbore. In one aspect, the apparatus, includes a clamping assembly, a drilling assembly and a cutting assembly. The...
7152679 Downhole tool for deforming an object  
A downhole tool comprises a body defining a fluid chamber, a fluid outlet for directing fluid outwardly of the chamber, and an arrangement for producing a rapid reduction in the volume of the...
7152680 Slickline power control interface  
An apparatus, method, and system for use in operating an electric downhole tool on a non-conductive support line (slickline) by converting a battery voltage to an output voltage suitable for...
7124823 Apparatus for and method of anchoring a first conduit to a second conduit  
Apparatus and methods are disclosed for anchoring a first conduit (10) to a second conduit (12). The first conduit (10) is typically an expandable conduit whereby a portion of the first conduit is...
7117956 Pipe conveyed explosive with self contained actuation  
A pipe conveyed charge system, for example a junk shot, having a self-contained activating charge which may be activated by mechanical force applied through the pipe. The initiating charge is...
7111685 Downhole sampling apparatus and method  
A method and apparatus for reducing debris in a perforation in a wellbore extending from the wellbore into a subterranean formations is provided. A housing is positioned in the wellbore, and an...
7108064 Milling tool insert and method of use  
The present invention generally relates to a cutting insert for use with wellbore milling tools. The cutting insert forms an angle between a milling surface of the insert and a surface of the tool...
7096950 Combined milling and scraping tool  
A downhole tool (1) for providing the dual role of cleaning and milling within a wellbore casing or liner is described. In an embodiment scraper blades (6) are mounted on a body (2) together with...
7090019 Casing cutter  
A subsea well casing cutting tool for use as part of a well abandonment procedure, the casing cutting tool deployable from a vessel located at a water surface, where in certain embodiments the...

Matches 151 - 200 out of 396 < 1 2 3 4 5 6 7 8 >