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| Number | Title | Issue Date |
| 8136585 | Radial ball injecting apparatus for wellbore operations An apparatus for successively releasing balls into a wellbore during wellbore operations is disclosed. The apparatus has a radial housing having at least one radial ball array having two or more radial bores. Each radial bore houses a ball cartridge adapted to recei... | 03/20/2012 |
| 7802620 | Cementing head A tool for dropping one or more balls and then one or more darts features a closable ball drop opening that works automatically after the ball release to minimize damage to the subsequently released dart. A retainer keeps the darts from coming back up above the dart... | 09/28/2010 |
| 7575048 | Drive for a rotating chemical dispensing apparatus A chemical dispensing apparatus includes a housing and a cartridge support within the housing. A rotating cartridge with chemical stick receptacles is rotatably supported about an axis of rotation by the cartridge support. An injection passage at the bottom of the h... | 08/18/2009 |
| 7552763 | Sphere launcher The present invention provides an apparatus for launching spheres into a gas riser in order to reduce the risk that the output from the riser is lost. The apparatus comprises a rotatable body that is rotated to a first position to receive an object from an object st... | 06/30/2009 |
| 7413008 | Tool for fluid filling and circulation during oilfield well tubing A tool for use in wells to maintain a tubed pipe filled with drilling fluid supplied by a well and to circulate the fluid through a well-pipe space, the tool facilitating sliding of tubes and producing cementation of the space. The tool can be intercalated with dril... | 08/19/2008 |
| 7398838 | Impact excavation system and method with two-stage inductor A system and method for excavating a subterranean formation according to which a fluid is introduced into a vessel to draw a plurality of impactors into the vessel to form a suspension. The suspension is discharged from the vessel and into another vessel, and fluid ... | 07/15/2008 |
| 7353875 | Centrifugal blending system The present invention relates generally to well servicing operations, and, more particularly, to devices, systems and methods useful in stimulation blending for fluids, mixtures, and/or slurries used in well servicing operations. A device, system and/or method is pr... | 04/08/2008 |
| 7331394 | Autonomous well intervention system A self-contained well intervention system which can be deployed from a lightweight vessel and coupled directly to a wellhead is described. The system includes valve means for providing a suitable well barrier and sealing the intervention system to allow an emergency... | 02/19/2008 |
| 7308934 | Fracturing isolation sleeve An apparatus operatively coupled to a well having a production casing positioned therein, the apparatus including a first device having and internal bore, a second device having an internal bore, and a fracture isolation sleeve disposed at least partially within the... | 12/18/2007 |
| 7281589 | Ball dropping tool method and apparatus One embodiment includes a method and apparatus for an improved ball dropper. In one embodiment the method and apparatus can be used to drop various objects into the well bore from the rig. In one embodiment, when the well is pressurized the tool can be loaded with o... | 10/16/2007 |
| 7273096 | Gel release device The invention relates to a device for holding and releasing an object, such device having a body with a cavity in which the object is accommodatable, an elastic retaining member for retaining the object in the cavity, and, a pushing member for pushing the object out... | 09/25/2007 |
| 7255162 | Methods and apparatus for use in subterranean cementing operations The present invention relates to subterranean cementing operations, and more particularly to an apparatus useful in loading cementing plugs and darts into tubulars, and methods of using such apparatus in subterranean cementing operations. An example of a method of t... | 08/14/2007 |
| 7234525 | Automated chemical stick loader for gas wells and method of loading The automated chemical stick loader includes a ground-based stick storage and dispensing cabinet, an automated valve actuating system atop the wellhead, and a fixed stick transfer tube extending between the storage and dispensing cabinet and the top of the wellhead.... | 06/26/2007 |
| 7216738 | Acoustic stimulation method with axial driver actuating moment arms on tines A method for generating acoustic waves, the method having the steps of: extending a tine from a support structure so that a proximal end of the tine is attached to the support structure and a distal end of the tine is uninhibited; positioning an oscillator so as to ... | 05/15/2007 |
| 7213681 | Acoustic stimulation tool with axial driver actuating moment arms on tines An apparatus for generating acoustic waves, the apparatus having: a support structure; two tines extending from the support structure so that proximal ends of the two tines are attached to the support structure so that distal ends of the two tines are positioned wit... | 05/08/2007 |
| 7204312 | Compositions and methods for the delivery of chemical components in subterranean well bores The present invention relates to the delivery of a plurality of chemical components in well bore applications. More particularly, this invention relates to delivery capsules and methods of using such delivery capsules for facilitating the delivery of at least a plur... | 04/17/2007 |
| 7201229 | Tree mounted well flow interface device A subsea production tree has an external annular profile formed on an upper portion of the tree. A vertical passage extending from a lower end of the tree to an upper end of the tree for communicating with a string of tubing extending into the well. A lateral passag... | 04/10/2007 |
| 7165619 | Subsea intervention system, method and components thereof The subsea intervention system (SIM) includes a BOP module 10 and CT module 20. A tool positioning system 76 is used for positioning a selected subsea tool 22 stored within a rack 18 with a tool axis in line with the BOP axis, whil... | 01/23/2007 |
| 7100700 | Downhole ball dropping apparatus A ball release mechanism is mounted near the intended seat. The ball or balls are kept out of the circulating stream. High circulation rates followed by curtailment of circulation places an outlet port in position to allow the ball or balls to be pushed out by a spr... | 09/05/2006 |
| 7090017 | Low cost method and apparatus for fracturing a subterranean formation with a sand suspension The present invention is directed to a low cost method and apparatus for fracturing a subterranean formation. The invention involves using a centrifugal pump to combine a fracture fluid, a sand suspension and liquid additive and discharge a mixture of these componen... | 08/15/2006 |
| 7066249 | Cementing manifold assembly Apparatus for cementing a string of tubulars in a borehole comprises an enclosure having a bore therethrough, an axially fixed sphere canister having a sphere aperture therethrough, a sphere valve member having a valve body disposed internally of said bore, and a sp... | 06/27/2006 |
| 7055611 | Plug-dropping container for releasing a plug into a wellbore A plug-dropping container used for releasing plugs or other objects into a wellbore during fluid circulation procedures. In one aspect, the plug-dropping container is used as part of a cementing head. The plug-dropping container comprises an elongated housing, and a... | 06/06/2006 |
| 7040401 | Automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus An automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus. In one configuration, arrival of a plunger is sensed as the plunger ascends from the wellbore through the production tubing and a signal is sent to a controller. ... | 05/09/2006 |
| 7036598 | Intervention module for a well The invention relates to an intervention module (18) for well intervention operations in preferably a pressurized subsea well (2) with a wellhead (4) disposed on a water floor. The intervention module (18) is provided with necessary equip... | 05/02/2006 |
| 6959766 | Downhole ball drop tool A ball drop tool for dropping an actuating ball to a ball seat located in a tool or tool string therebelow. The ball drop tool includes a housing with a ball drop cage positioned therein. The ball drop cage has a rocker arm pivotably attached thereto. In a first pos... | 11/01/2005 |
| 6953097 | Drilling systems Systems and methods for providing a mixture of drilling fluid and beads into a flow of drilling fluid, e.g., flowing in a conduit or flowing upwardly within an annulus of a riser, the method in certain aspects including: introducing an initial stream including a mix... | 10/11/2005 |
| 6904970 | Cementing manifold assembly A cementing manifold is disclosed that preferably includes: modular housings that can be stacked together and interconnected to add multi-dart or multi-sphere capability; identical, interchangeable valves; internal bypass capability; a minimum number of protrusions ... | 06/14/2005 |
| 6799638 | Method, apparatus and system for selective release of cementing plugs A running tool for wiper plugs used in cementing well casings into a wellbore. The running tool and setting balls or darts used to launch the plugs are retrievable following deployment of the plugs. Flapper valve assemblies on the wiper plugs are activated after the... | 10/05/2004 |
| 6776228 | Ball dropping assembly A ball dropping assembly for dropping a plurality of objects, such as spherical balls, into a wellbore. The assembly first comprises a seat for retaining a ball before it is released. The assembly also comprises a ball-feeding channel for feeding additional balls on... | 08/17/2004 |
| 6755244 | Lubricator A lubricator (10) includes a tubular body (12) through which passes a support member such as coil tubing or wireline, and an elongate slot (18) for inspection of or access to the support. A sleeve (20) mounted on the body (12) is m... | 06/29/2004 |
| 6715541 | Ball dropping assembly A ball dropping assembly for dropping an object such as a spherical ball into a wellbore. The assembly comprises a seat for retaining a ball before it is released, a ball retaining lever, and a shaft for turning the lever. In one embodiment, the assembly is attached... | 04/06/2004 |
| 6708766 | Wellhead assembly for communicating with the casing hanger annulus A subsea wellhead assembly has the capabilities of communicating from the outer surface of an outer wellhead housing to a casing annulus. Seals between the outer and inner wellhead housings define an annular chamber when the inner wellhead housing lands. The outer w... | 03/23/2004 |
| 6672384 | Plug-dropping container for releasing a plug into a wellbore The present invention relates to a plug-dropping container for releasing plugs or other objects into a wellbore during fluid circulation procedures. In one aspect, the plug-dropping container is used as part of a cementing head. The plug-dropping containe... | 01/06/2004 |
| 6659180 | Deepwater intervention system The well intervention system of the invention is a novel subsea deployed wire line, "stiff wire" (conventional wire-line located inside reeled tubing or embedded in the tubing wall), coil tubing, or reeled pipe unit landed on the existing subsea wellhead ... | 12/09/2003 |
| 6640912 | Cuttings injection system and method An automated high speed drill cuttings processing and injection module having a relatively small foot print, capable of operation in zone one hazardous environments, for injecting drill cuttings into an earth formation, capable of handling high drilling r... | 11/04/2003 |
| 6637512 | Soap stick launcher and method for launching soap sticks A stick launcher and method for launching soap sticks into a gas or oil well. The stick launcher comprises a containment vessel adapted to house the soap sticks, the containment vessel comprising a contiguous wall and a top and a bottom. A turret-style se... | 10/28/2003 |
| 6588501 | Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheres A pumping system for injecting buoyant spheres into an oil or gas well having a feeder containing a plurality of buoyant spheres; and a sphere pump in proximity to the feeder, having first and second rotatable wheels, wherein the first wheel has a plurali... | 07/08/2003 |
| 6575247 | Device and method for injecting fluids into a wellbore A device and method for delivering fracture fluid (e.g., erosive materials) into an oilfield wellbore while the well has wireline, coiled tubing, jointed tubing or any other apparatus encumbering the flow path of the erosive fluid that is being injected i... | 06/10/2003 |
| 6575238 | Ball and plug dropping head There is disclosed a ball and plug dropping head which includes a housing having an inlet at its upper end and an outlet at its lower end, and passages extending downwardly within the housing at circumferentially spaced locations, each to receive a ball o... | 06/10/2003 |
| 6516861 | Method and apparatus for injecting a fluid into a well An injection spool for use in the injection of a fluid, for example a slurry of drilling cuttings, into a subsea wellhead assembly has an outer housing having a central bore therethrough. The housing has a first end for connection to a wellhead assembly s... | 02/11/2003 |
