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| Number | Title | Issue Date |
| 7252161 | Method and apparatus with slips assembly for coupling tubulars without interruption of circulation A slips assembly which comprises a plurality of slip segments which, when positioned adjacent to each other, form a collar, which collar is larger than the diameter of the tubular body of the tubular at the top of the drill string and smaller than the diameter the u... | 08/07/2007 |
| 7249629 | Multi-function well servicing vehicle A mobile vehicle for inserting jointed pipe into a well, having a derrick and hydraulic rams to raise and lower same, adapted to conduct additional operations which will allow a well to be completed by this vehicle alone. Three winches are provided, a first to raise... | 07/31/2007 |
| 7251590 | Dynamic vibrational control A method for reducing vibration of a drilling tool assembly is disclosed. The method includes modeling the drilling tool assembly based on input parameters, simulating a vibration of a drill string coupled with a vibration of a drill bit, determining an initial tota... | 07/31/2007 |
| 7243742 | Drill pipe screen A retrievable drill pipe screen is adapted for releasable connection within a drill pipe string. The screen has a planar support plate for connecting a perforated tubular screen body to a fish neck wherein the plane of the planar support plate is generally parallel ... | 07/17/2007 |
| 7245229 | Drill string rotation encoding A method for communicating with a downhole device is provided. The method includes predefining an encoding language including codes understandable to the device, the codes represented in the language as predefined value combinations of drill string rotation variable... | 07/17/2007 |
| 7243743 | Drilling assembly and method for drilling a barehole into geological formations A drilling assembly for drilling a borehole into geological formations. The assembly comprises a drilling shaft and a pump device, both placable in the borehole. The drilling shaft comprises a drilling head, and the pump device comprises a sealing device for sealing... | 07/17/2007 |
| 7240735 | Subsea wellhead assembly A subsea wellhead including a wellhead housing having a bore with a grooved profile. An upper portion of the bore has a greater diameter than a lower portion of the bore, and a central conical portion of the bore joins the upper portion of the bore and the lower por... | 07/10/2007 |
| 7240728 | Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ... | 07/10/2007 |
| 7237628 | Fixed cutter drill bit with non-cutting erosion resistant inserts The present invention is directed to a drill bit with non-cutting erosion resistant inserts. In one illustrative embodiment, the apparatus comprises a matrix drill bit body comprising a plurality of blades, a plurality of cutting elements positioned on each of the b... | 07/03/2007 |
| 7237994 | Wall plug A wall plug for enabling fixings to be attached to a wall, the wall plug comprising an elongate body having an inner insertion end and an outer end, a through bore extending from the outer end toward the inner end, the through bore being adapted to axially receive a... | 07/03/2007 |
| 7237613 | Underbalanced marine drilling riser A riser assembly for offshore drilling has an inner conduit suspended within an outer riser. A seal assembly seals an annular space between the inner conduit and the riser at the lower end of the inner conduit. The seal assembly has a pressure area that is independe... | 07/03/2007 |
| 7237609 | Methods for producing fluids from acidized and consolidated portions of subterranean formations A method of stimulating and stabilizing an area of a subterranean formation comprising placing an acid fluid into an area of a subterranean formation and allowing the acid to at least partially dissolve a portion of the area of the subterranean formation; placing a ... | 07/03/2007 |
| 7239098 | Digital adaptive sensorless commutational drive controller for a brushless DC motor Various embodiments of an electrical motor, a brushless DC motor controller, and applications thereof. In one embodiment, a fluid-moving device is provided with a brushless DC motor and a motor controller. The controller may include a set of comparators and a clocke... | 07/03/2007 |
| 7234538 | Method for sinking a borehole in the ground and wet boring tool The invention relates to a method for sinking a borehole in the ground, in which a wet boring tool with a removal area for producing or advancing a borehole is used, the borehole is at least partly filled with a fluid and in the borehole is formed a filling area and... | 06/26/2007 |
| 7234541 | DLC coating for earth-boring bit seal ring An earth-boring bit has a seal assembly with a seal face having a DLC coating. The seal assembly locates between a bearing pin and a cone of the bit. The seal assembly has at least one rigid ring that rotates against a mating surface. The DLC coating is diamond-like... | 06/26/2007 |
| 7234546 | Drilling and cementing casing system A method and associated equipment are disclosed which allow drilling at least a portion of a well and subsequently cementing casing in a single trip. The method is particularly suited for deep-water offshore operations where the drill string can be run through a sec... | 06/26/2007 |
| 7234542 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 06/26/2007 |
| 7234544 | Drill tool shaft-to-housing locking device In a tool having an inner member supported within an outer member, wherein the tool defines a longitudinal axis, a device is provided for preventing relative rotation of the inner member and the outer member. The device is comprised of a locking mechanism and a lock... | 06/26/2007 |
| 7231969 | Wellbore top drive power systems and methods of use A top drive system having a drive motor, a gear system coupled to the drive motor, a drive quill coupled to the gear system, a top drive support system for supporting the drive motor, the gear system, and the drive quill, a lower support apparatus connected to the t... | 06/19/2007 |
| 7228913 | Tubular clamp apparatus for top drives and methods of use An apparatus for releasably clamping and holding a member for wellbore operations, the apparatus having a main body, two opposed clamping apparatuses in the main body, the two opposed clamping apparatuses spaced-apart for selective receipt therebetween of a member t... | 06/12/2007 |
| 7228920 | Drilling apparatus and method for introducing a drilling element into the soil The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil. The drilling element is rotatably and slidably supported on a mast, with a torque being applied through a rotary drive located on the mast. In order to suppo... | 06/12/2007 |
| 7225887 | Method of drilling an ultra-short radius borehole A method of drilling a borehole into an earth formation using a drill string having an upper part and a lower part which is more flexible than the upper part, the method involving drilling a first section of the borehole, drilling a second section of the borehole fr... | 06/05/2007 |
| 7225886 | Drill bit assembly with an indenting member In one aspect of the invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has a recess with a side wall which is substantially coaxial with the shank portion. At least one cutting element is attach... | 06/05/2007 |
| 7225877 | Subsea intervention fluid transfer system A system for subsea transfer of intervention fluids to a subsea intervention apparatus, the system, in certain aspects, including a structure and a frame pivotably mounted thereto, a plurality of frame fluid conduits on the frame for conducting fluid from a connecto... | 06/05/2007 |
| 7225868 | Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E... | 06/05/2007 |
| 7223049 | Apparatus, system and method for directional degradation of a paved surface An apparatus, system and method for directionally degrading a paved surface. A substantially cylindrical rotary tool may include cutting inserts embedded within its cylindrical surface. The tool may be rotated about a rotational axis extending from a top end of the ... | 05/29/2007 |
| 7222683 | Wellbore top drive systems An containerized top drive system including a container, top drive apparatus removably disposed within the container, an extension system for moving the top drive apparatus generally horizontally within a derrick, the top drive apparatus secured to the extension sys... | 05/29/2007 |
| 7219752 | System and method for damping vibration in a drill string A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define... | 05/22/2007 |
| 7219750 | Process and system for drilling and lining a bore hole An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray head and reamer head, a means to drive the reamer head through a borehole and a means for d... | 05/22/2007 |
| 7216727 | Drilling bit for drilling while running casing A drill bit for drilling casing in a well bore. The drill bit is constructed from a combination of relatively soft and relatively hard materials. The proportions of the materials are selected such that the drill bit provides suitable cutting and boring of the well b... | 05/15/2007 |
| 7216565 | Methods of manufacturing and repairing steel body rotary drill bits including support elements affixed to the bit body at least partially defining cutter pocket recesses A steel body rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical ... | 05/15/2007 |
| 7216711 | Methods of coating resin and blending resin-coated proppant A method of consolidating particulates comprising providing a slurry comprising a carrier fluid, a first portion of particulates, and a second portion of particulates wherein the first portion of particulates is at least partially coated with resin or tackifying age... | 05/15/2007 |
| 7213661 | Dual property hydraulic configuration A rotary cone rock bit includes one or more hole cleaning nozzles and one or more bit cleaning nozzles. The hole cleaning nozzles of one drill bit define a projected fluid path disposed at a lateral angle of less than six degrees in order to achieve a large impingem... | 05/08/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7213656 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus and method for facilitating the connection of tubulars using a top drive and is, more particularly but not exclusively, intended for facilitating the connection of a section or stand of casing to a string of casing. ... | 05/08/2007 |
| 7211547 | Resin compositions and methods of using such resin compositions in subterranean applications The present invention relates to curable, permeable resin compositions and methods of using such compositions. One embodiment of provides a method of creating a resin mass comprising the steps of combining a resin, a hardening agent, a hydrocarbon diluent, a silane ... | 05/01/2007 |
| 7212131 | Controlling an underground object In order to control the sonde of an underground object, such as an underground boring tool, a predetermined sequence of rotation steps is applied to the object and that sequence is detected. The detection of the appropriate sequence causes the sonde to change its fu... | 05/01/2007 |
| 7207390 | Method and system for lining multilateral wells In accordance with one embodiment of the present invention, a method for lining a lateral wellbore includes drilling a main wellbore extending from a surface to a subterranean zone, casing the main wellbore with a main casing having a plurality of lateral wellbore w... | 04/24/2007 |
| 7207395 | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement A method and system for testing a partially formed well includes forming a first well bore intersecting a subterranean formation. The first well bore includes a portion of a planned well having a first configuration. A production characteristic of the subterranean f... | 04/24/2007 |
| 7204324 | Rotating systems associated with drill pipe Methods and apparatuses for drilling a borehole are disclosed. An electric motor electrically and mechanically coupled to a wired drill pipe is provided. The electric motor couples to a shaft that rotates when power is supplied to the electric motor. The shaft is co... | 04/17/2007 |
