Match Document Document Title
9038712 Tubular lifting apparatus  
A wellbore tubular lift safety system and tubular lifting apparatus for removing tubulars can include a lower section with a lower base plate hole, sliding rods, and a lower gripping member. An...
9038521 Apparatus for creating and customizing intersecting jets with oilfield shaped charges  
A geological perforating tool (gun) shape charges disposed at an angle that provides an improvement over other known embodiments by accurately securing the charges in the tool to facilitate...
9038713 Shaped charge casing cutter  
A shaped charge casing cutter is constructed with the cutter explosive formed into radial section modules aligned in a toroidal cavity between a pair of housing plates. The center sections of the...
9033041 Completing a multi-stage well  
A technique includes running a seat assembly on a conveyance line into a tubing string, which has previously been installed in a well. The seat assembly includes a seat, which is adapted to...
9022116 Shaped charge tubing cutter  
A shaped charge pipe cutter is constructed with the cutter explosive material packed intimately around an axially elongated void space that is continued through a heavy wall boss portion of the...
9022104 Blowout preventer blade assembly and method of using same  
Techniques for shearing a tubular of a wellbore penetrating a subterranean formation with a blowout preventer are provided. The blowout preventer has a housing with a hole therethrough for...
8985209 High pressure jet perforation system  
A technique facilitates removal of excess sand during a jet perforating operation without requiring that the perforating string be pulled out of hole. A jet perforating tool is provided with at...
8985210 Methods of severing an object from the outside using heat evolved from an exothermic reaction  
A method of severing at least a first object comprises: positioning a severing device adjacent to the first object, wherein the first object is a wireline or a tubular, and wherein the severing...
8985230 Resettable lock for a subterranean tool  
A lock holds a movable member in position to a stationary member. The set position of the tool is held while being configured to release with the capability of being reset in the same trip to lock...
8978749 Perforation gun string energy propagation management with tuned mass damper  
A perforation tool assembly comprises a perforation gun, and a mass energy absorber coupled to the perforation gun. The mass energy absorber is configured to alter the propagation of mechanical...
8973651 Modular anchoring sub for use with a cutting tool  
A cutting tool that inserts into a tubular for cutting the tubular from within. The cutting tool includes a motor, a cutting head, permanent anchor between the motor and cutting head, an...
8967256 Wellbore perforation tool  
A perforation tool comprises an explosive charge comprising an explosive focal axis, a tool body containing the explosive charge, and a flowable material carried with the tool and disposed along...
8967257 Method and apparatus for expendable tubing-conveyed perforating gun  
Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator...
8960288 Select fire stackable gun system  
A system and method of perforating by stacking a perforating string within a wellbore, then deploying the perforating string to a designated depth for detonating shaped charges in the perforating...
8955597 Method and system for abandoning a borehole  
A method of abandoning a borehole includes, running a tool into the borehole, cutting a casing with a first portion of the tool, reaming the borehole in an area where the casing has been cut with...
8950480 Downhole tool delivery system with self activating perforation gun with attached perforation hole blocking assembly  
A downhole tools deployment apparatus is disclosed. In an embodiment, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics compartment, a...
8950487 Assemblies and methods for minimizing pressure-wave damage  
An assembly for minimizing damaging effects of pressure waves on devices in a wellbore. The assembly comprises a dynamic device disposed in the wellbore and generating pressure waves during...
8950509 Firing assembly for a perforating gun  
A firing assembly is configured to be contained in a recess formed in a wall of a tubular string subassembly and operates without blockage of the central core of the casing subassembly. The...
8939210 Drill collar severing tool  
A pipe severing tool is arranged to align a plurality of high explosive pellets along a unitizing central tube that is selectively separable from a tubular external housing. The pellets are loaded...
8936088 Cutting assembly and method of cutting coiled tubing  
A coiled tubing cutter assembly comprises a housing configured to be inserted in a length of coiled tubing. The housing forms a main bore and a first pathway through which cutting fluid can flow...
8931555 Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings  
There is described a device for machining apparatus arranged for machining of a portion of a casing positioned in a wellbore, wherein a return fluid conduit extends from the machining apparatus in...
8919236 Perforating gun drop sub  
A perforating gun assembly comprises a drop sub linking the firing head to the gun tube or tubes. The drop sub includes a 360° perimeter shaped charge explosive for severing pipe having an axial...
8919444 System and method for enhanced wellbore perforations  
An apparatus for perforating a subterranean formation may include a casing, an energetic material, a liner, and an acid-generating material. The casing may have a slotted end configured to receive...
8915298 Slickline or wireline run hydraulic motor driven mill  
A tool is run in with a bottom hole assembly that includes a seal and support within the tubing where a fish is to be milled. A ported sub allows pressurized fluid pumped from the surface to enter...
8910713 Gun upset and no-go system for deployment of perforating gun assemblies  
Devices and methods for deploying perforating guns through a wellhead production assembly and into a wellbore. In particular embodiments, the invention provides devices and methods for deploying...
8905125 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...
8899313 Cutting unit of a hydromechanical slot perforator  
A cutting unit for a slot-type perforator is mounted in a casing having a specific edge, driven by a piston or plunger. The cutting unit includes cutting tools associated with a first holder...
8899346 Perforating assembly control  
A perforating assembly includes a material that can respond to a magnetic field by changing shape multiple times and causing a fire control circuit to activate and deactivate. The material may be...
8893791 Multi-position mechanical spear for multiple tension cuts with releasable locking feature  
A cut-and-pull spear is configured to obtain multiple grips in a tubular to be cut in tension. A lock feature holds the set position of the slips and seal. The lock can be defeated with an axial...
8893785 Location of downhole lines  
A method of determining an azimuthal orientation of a well tool relative to a line in a well can include connecting at least one acoustic source to the well tool, the acoustic source having a...
8887798 Hydraulic stabilizer for use with a downhole casing cutter  
A downhole stabilizer includes a radial expansion assembly deployed about, and configured to rotate substantially freely with respect to, a tool mandrel. The expansion assembly preferably includes...
8881818 Tubular cutting with debris filtration  
A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while...
8882393 Tool for longitudinally subdividing sewer pipes  
The invention relates to a tool for longitudinally subdividing buried sewer pipes having an asymmetric, generally oval cross section, made substantially of a support shoe opposing a cutting blade...
8881816 Shock load mitigation in a downhole perforation tool assembly  
A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to...
8881819 Tubular cutting with a sealed annular space and fluid flow for cuttings removal  
A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while...
8881817 Cutting tool  
A downhole tool having a cylindrical body, a sleeve having a contact portion disposed on a distal end, and a cutter having a radiused portion on a top surface operatively engageable with the...
8875796 Well tool assemblies with quick connectors and shock mitigating capabilities  
A method can include interconnecting a well tool in a well tool assembly with a shock mitigating connection, the interconnecting being performed without threading, and positioning the well tool...
8875787 Electromechanical assembly for connecting a series of guns used in the perforation of wells  
An electromechanical assembly for a series of guns used in the perforation of petroleum producing wells. Each gun is a cylindrical housing having a charge-carrier loaded with explosive charges in...
8869896 Multi-position mechanical spear for multiple tension cuts while removing cuttings  
A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while...
8863822 Control line running system  
A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit...
8863851 Milled packer retaining tool with reverse circulation  
A grapple device is secured to a mill to allow relative rotation between them. The grapple has an outward bias to allow it to grip the packer bore or an extension from the packer. The mandrel has...
8863823 Universal underground hydro-slotting perforation system controlled by working fluid pressure for activation and intensification of gas, oil, and hydro-geological wells  
An underground hydro-slotting perforation system includes an adaptor connectable to a tubing, a tail part connected to the adaptor, a hydraulic block connected to the tail part, a return block...
8857514 Method and systems to sever wellbore devices and elements  
A method for performing an operation in the wellbore may include at least partially separating a wellbore tubular while reducing a compression in a section of the wellbore tubular using a force...
8851160 Percussion operated firing mechanism for perforation of wellbores and methods of using same  
Perforation guns comprise a firing head to activate an initiator which, in turn, causes detonation of perforation charges. The firing head comprises a firing pin in sliding engagement with a bore...
8844613 Shear blade and method of attachment to shear rams  
A shear blade attached to a ram block. At least one bolt passage is formed at an angle at the top of the ram block. A bolt passage is formed in the shear blade that corresponds with the bolt...
8844625 Perforating gun spacer  
Perforating gun connectors are provided with a small diameter inner tube to house the detonating cord and an outer load-bearing tube that is ported to be in pressure balance. The inner tube...
8844614 Tangential perforation system  
A method to separate a gas phase from a liquid phase in a subterranean formation that includes positioning a downhole tool in a wellbore, operating the downhole tool to form perforations in the...
8839864 Casing cutter  
Tools and methods for cutting multiple, co-extending casings in oil and gas wells. The tools comprise a cylindrical body and first and second sets of cutting blades. Each set of cutting blades is...
8839863 High pressure/deep water perforating system  
A perforating system having a perforating gun with a gun body formed from a ductile material. The gun body deforms under pressure while maintaining sufficient structural integrity to remain intact...
8839873 Isolation of zones for fracturing using removable plugs  
An interval can be divided into zones by inserting a series of plugs that register with specific profiles at predetermined intervals along a section of pipe. Each plug supports a releasable...