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8561683 Wellbore tubular cutter  
An apparatus and a method for cutting a wellbore tubular may include an upper section and a lower section mating at a juncture plane defined by a plane transverse to the longitudinal axis of the...
8555955 One trip multiple string section milling of subterranean tubulars  
Multiple section mills are run in a single trip with an intervening mill preferably a watermelon mill to grind up any cuttings that get past the first mill in a direction toward the second mill...
8540027 Method and apparatus for selective down hole fluid communication  
Methods and apparatus for perforating a formation in a wellbore without perforating a well bore casing. The methods and apparatus include an external casing perforating device configured so as not...
8534957 Cold assisted pipe splitting and bursting  
A method and system for repairing, replacing or installing an underground pipeline using an appropriate tool head. A coolant, preferably a cryogenic liquid, is injected in front of the tool head...
8528644 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production  
An apparatus and method for improving control over the milling force applied to a milling bit that is turned through a rotary drive to form a hole in a wellbore casing. A bit-weighting sub is...
8528630 Through tubing cable rotary system  
Methods and apparatus, for performing rotary, cutting and/or crushing operations in a subterranean borehole or conduit thereof, which use higher and lower pressures therein to operate a motor,...
8499834 Milling tool for establishing openings in wellbore obstructions  
A milling tool which includes a nose cutting portion, a cutting section having a plurality of hardened cutters and a shaft portion. A wear pad is disposed on the cutting section and shaft portion....
8490702 Downhole tool assembly with debris relief, and method for using same  
A tool assembly and method for completing a well are provided. The tool includes debris relief features that enable use in solids-laden environments, for example in the presence of sand. Forward...
8469097 Subterranean tubular cutter with depth of cut feature  
A tubular cutter that cuts with extendable and rotating blades has its depth of cut limited upon getting through the tubular to be cut. In a preferred embodiment, the tubular has a loosely mounted...
8469096 Whipstock  
A whipstock with a longitudinal axis includes a tapered face surface, at least a part of which is inclined with respect to the longitudinal axis, for guiding a milling head as the milling head...
8469089 Process and apparatus to improve reliability of pinpoint stimulation operations  
An anchor tool having a housing, a one-way restrictor device in fluid communication with the housing, and a stabilizer affixed to the housing. The one-way restrictor device is configured to allow...
8459358 Cutting dart and method of using the cutting dart  
The present disclosure is directed to a cutting dart. The cutting dart comprises a dart body including a first pathway. The first pathway is configured to redirect cutting fluid flowing through a...
8459357 Milling system and method of milling  
A mill for milling a window through metal casing in a well bore that includes a body having a plurality of blades; a plurality of cylindrically bodied cutting elements on said blades; and a...
8453737 Diameter based tracking for window milling system  
Diameter based tracking for a window milling system. A window cutting system includes a cutting assembly with multiple cutting faces for cutting the window; and a diverter for guiding displacement...
8448700 Abrasive perforator with fluid bypass  
An abrasive perforator tool with a bypass flow channel. The tool comprises a tubular body or housing with perforating nozzles in the sidewall. A sleeve assembly inside the central bore of the tool...
8424607 System and method for severing a tubular  
The invention relates to techniques for severing a tubular. A blowout preventer is provided with a housing having a bore therethrough for receiving the tubular, an actuator positionable in the...
8424595 Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly  
A method and apparatus for releasing a coiled tubing internal line from a bottom hole assembly. The internal line may not have strength sufficient to permit the application of a tension force at...
8403049 Methods and devices for one trip plugging and perforating of oil and gas wells  
A tubing conveyed tool for use in perforating a well bore utilizing abrasive perforating techniques. The perforating tool is particularly useful in non-vertical wells. The perforating tool is...
8403048 Slickline run hydraulic motor driven tubing cutter  
A tubing cutter is run in with a bottom hole assembly that includes a seal and support within the tubing to be cut. A ported sub allows pressurized fluid pumped from the surface to enter the...
8376040 Cutting device and a method for emergency cutting of a line in a well  
A cutting device and a method for emergency cutting of a line in a well are disclosed. The cutting device includes a tapering guide including a narrow end portion and a wide end portion for...
8365814 Pre-verification of perforation alignment  
A perforating system, comprising a perforating gun with shaped charges, and a pre-detonation orientation apparatus and method. The pre-detonation orientation device comprises an orientation device...
8360156 Method and apparatus for preventing spillage or loss of drill fluids  
A well bore fluid recovery system and method is disclosed for recovering a column of well bore fluid within a stand of casing before cutting the casing. The recovery system relates to a system for...
8353367 Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring perforating, assisting annular flow, and associated methods  
A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate...
8322422 Method of removing a device in an annulus  
A method for removing at least a portion of an object in an annulus formed between an external surface of a tubular element and a wall surface. A method for removing an annulus packer, of the...
8312925 Bottom hole assembly for wellbore operations  
An embodiment of a method of performing a wellbore operation in an oilfield comprises providing a bottom hole assembly on a conveyance, deploying the bottom hole assembly into the wellbore with...
8307903 Methods and apparatus for subsea well intervention and subsea wellhead retrieval  
The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of...
8291977 Oil well plug and abandonment method  
A method of severing a well string that extends into an oil well from an oil platform with a deck includes supporting upper and lower sections of the well string, the lower section supported at...
8286706 Pressure compensation for a perforating gun  
A perforating system having a perforating gun with a pressurizable gun body. The gun body can be pressurized prior to deployment in a wellbore, or while in the wellbore. Pressurizing the gun body...
8281860 Method and system for treating a subterranean formation  
A system that is usable with a well includes a tubular string, which includes a jetting sub. Fluid is communicated outside an annular region that surrounds the string to a first zone of the well...
8267199 Perforating and jet drilling method and apparatus  
Apparatus and method for drilling perforations in well casing and drainholes into a subterranean formation around a well are provided. A tool body on tubing directs a mechanical cutter or jet bit...
8267198 Perforating and jet drilling method and apparatus  
A tool body on tubing directs a mechanical cutter or jet bit to the casing. A hole is cut in casing and a rotary detent mechanism may be used to drill additional holes through casing and enable...
8261828 Optimized machining process for cutting tubulars downhole  
The tubular cutting tool for severing downhole tubulars, the tool having a drive system, a pivoting system, a cutting head, a cutting member, and a lubricant delivery system. Cutting may be...
8245785 Method and apparatus for lateral well drilling with biased length adjusting casing cutter  
The apparatus and method for drilling through the casing utilizes a yieldable biasing element to provide a self-adjusting length and exerts a predictable, controlled biasing force against the...
8240369 Slot-perforating system for oil, gas and hydro-geological wells  
A slot-perforating system for an abrasive-hydro-slotting of a near well-bore zone for establishing an inflow path between a borehole and a formation has an adaptor connectable to a tubing; a...
8210254 Diverting tool  
A diverting tool includes a ramp repositionable from a first position to a second position, a biasing member in operable communication with the ramp biasing the ramp toward the second position,...
8201643 System and method for longitudinal and lateral jetting in a wellbore  
A system and method for enabling longitudinal and radial drilling in a wellbore is described. The system and method enable an operator to perforate the casing of a wellbore with an under-reamer at...
8201631 Multi-functional isolation tool and method of use  
A tool assembly and method for completing a well are provided. The tool is deployed on tubing string and includes a fluid treatment assembly with cup seals above and below the treatment ports. An...
8186425 Sympathetic ignition closed packed propellant gas generator  
A downhole propellant gas generator includes a propellant assembly that comprises a plurality of individual lengths of an energetic material packed in a selected configuration and at least one...
8186435 Method and apparatus for stimulating wells with propellants  
The present invention relates to apparatus and methods to stimulate subterranean production and injection wells, such as oil and gas wells, utilizing rocket propellants. Rapid production of...
8151882 Technique and apparatus to deploy a perforating gun and sand screen in a well  
A system that is usable with a well includes tubular body, at least one perforating charge that is disposed on the tubular body and at least one screen section that is disposed on the tubular...
8146682 Apparatus and methods of milling a restricted casing shoe  
A method of removing a restriction in a tubular located in a well includes providing a drilling assembly with a drill bit and a reamer, the reamer having a cutting structure for removing the...
8136584 Single trip tubing punch and setting tool  
A tubing punch and setting tool (TPST), operating on a single run for improved well bore intervention. The tool includes a setting tool for connecting to and setting a reference tool in a tubing...
8118098 Flow control system and method for use in a wellbore  
A technique is provided to facilitate fluid flow and pressure control in a well with an interventionless flow valve system. The valve system is coupled to a well component string deployed downhole...
8118099 Method and apparatus for forming and sealing a hole in a sidewall of a borehole  
A method for forming and sealing a hole in a sidewall of a borehole may include conveying a bit and a sealer into the borehole using a carrier, forming a hole in the sidewall using the bit, and...
RE43054 Method and apparatus for casing exit system using coiled tubing  
A system and method for setting an anchor and/or whipstock attached to a downhole motor having a cutting tool attached to a tubular member, such as coiled tubing. In one aspect, the motor allows...
8074737 Wireless perforating gun initiation  
A perforating system and method for wellbore perforating. The system comprises a perforating string having a perforating gun with shaped charges, a communication module for receiving detonation...
8066070 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...
8061426 System and method for lateral wellbore entry, debris removal, and wellbore cleaning  
A method of servicing a wellbore comprises running a toolstring into a wellbore to a first depth, actuating a controllably rotating sub-assembly of the toolstring to rotate, and activating a...
8056633 Apparatus and method for removing subsea structures  
An apparatus and method for removing a subsea structure wherein a housing defining a subsea structure receiving space and having a jetting system attached at or near the bottom of the housing is...
8047291 Tool and method for abrasive formation of openings in downhole structures  
An abrasive slurry tool, the tool being attachable to a running string, the tool including a high-pressure assembly, the assembly including a nozzle assembly; and a low-pressure assembly in...
Matches 51 - 100 out of 396 < 1 2 3 4 5 6 7 8 >