Patent application number | Description | Published |
20080196881 | Wellbore Cleaning Tool and Method - There is disclosed a cleaning tool for use in cleaning ferrous material from a wellbore, a cleaning assembly comprising a plurality of such wellbore cleaning tools, and a method of cleaning ferrous materials from a wellbore. | 08-21-2008 |
20090025927 | WELLBORE CLEANING METHOD & APPARATUS - This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. | 01-29-2009 |
20090126933 | DEVICE AND METHOD FOR RETRIEVING DEBRIS FROM A WELL | 05-21-2009 |
20090255665 | DUAL FUNCTION CLEANING TOOL - A cleaning tool for cleaning a liner top in a well bore. The tool includes cleaning elements, typically scrapers, which are arranged eccentrically to an axial bore through the tool. The elements are biased outwardly to contact an inner surface of a polished bore receptacle (PBR) at a position with a curvature to match the PBR and to present leading edges of each element when positioned at a surface of a neighbouring casing. The tool may further provide a top dress mill and act as a packer actuator sub. This provides a tool which performs a number of functions on a single trip in a well bore. | 10-15-2009 |
20100065125 | VALVE SEAT ASSEMBLY, DOWNHOLE TOOL AND METHODS - A valve assembly ( | 03-18-2010 |
20100132954 | BALL SEAT ASSEMBLY AND METHOD OF CONTROLLING FLUID FLOW THROUGH A HOLLOW BODY - A method of controlling fluid flow through a hollow body, uses a ball seat assembly ( | 06-03-2010 |
20100252281 | DOWNHOLE FLOW CONTROL TOOL AND METHOD - A downhole flow control tool | 10-07-2010 |
20110024119 | DOWNHOLE DEBRIS REMOVAL TOOL - A downhole debris recovery tool including a ported sub coupled to a debris sub, a suction tube disposed in the debris sub, and an annular jet pump sub disposed in the ported sub and fluidly connected to the suction tube is disclosed. A method of removing debris from a wellbore including the steps of lowering a downhole debris removal tool into the wellbore, the downhole debris removal tool having an annular jet pump sub, a mixing tube, a diffuser, and a suction tube, flowing a fluid through a bore of the annular jet pump sub, jetting the fluid from the annular jet pump sub into the mixing tube, displacing an initially static fluid in the mixing tube through the diffuser, thereby creating a vacuum effect in the suction tube to draw a debris-laden fluid into the downhole debris removal tool, and removing the tool downhole debris removal tool from the wellbore after a predetermined time interval is also disclosed. Further, an isolation valve including a housing, an inner tube disposed coaxially with the housing, and a gate, wherein the gate is configured to selectively close an annular space between the housing and the inner tube is disclosed. | 02-03-2011 |
20110168404 | DOWNHOLE TOOL - A cleaning tool ( | 07-14-2011 |
20110186355 | DRILL STRING MOUNTED ROTATABLE TOOL AND CLEANING METHOD - A method of drilling and cleaning a wellbore whilst rotating the drill string after full drilling depth is reached without running the drill string out the bore to install a clean up work string is disclosed wherein a drill string having a drill bit at one end includes at least one near bit selectively activatable cleaning tool ( | 08-04-2011 |
20110203063 | WORK STRING MOUNTED CLEANING TOOL AND ASSEMBLY METHOD - Work string-mounted cleaning tool and a method of assembling such tools using a quick release for the cleaning element. Oblong pad element has a curved upper surface with slots to receive work surface segments. Opposite edge has a part-circular recess with part-circular peripheral lip around an upper edge of the recess. A retainer fastening component in the recess has a core with socket adapted to receive a driving tool. The retainer is sized to permit it to rotate when mounted within the recess. Roll pins are provided for use in locating the fastener component in predetermined rotational configurations in relation to the recess. Shear pin is provided to inhibit unintended rotation of the fastener component, and to lock the retainer for normal use of the cleaning tool. Shearing of the shear pin permits disassembly of the tool. | 08-25-2011 |
20110226491 | DOWNHOLE TOOL OF HIGH PRESSURE OPERATING CYCLE CAPABILITY - A pressurization tool comprises a body for connection to a tubular by box, and pin, and providing for flow of fluid by way of a throughbore of varying cross-section to form chambers. A lower chamber accommodates a spring that contacts a shoulder providing a reaction surface for compression of the spring under applied force. The chamber merges into intermediate chamber that accommodates a movable index sleeve that cooperates with an index pin inserted through the wall of the tool body. Associated with the upper part of the index sleeve is a valve seat assembly, positioned to abut the index sleeve and moveable therewith, said valve seat assembly being configured to receive a plug or ball, and in one unpressurised configuration, is located in a wider chamber that permits fluid flow around the assembly. | 09-22-2011 |
20110308786 | DIVERTER CUP ASSEMBLY - A downhole cleaning tool for cleaning a casing is provided with a diverter cup assembly ( | 12-22-2011 |
20120055681 | DOWNHOLE VALVE TOOL AND METHOD OF USE - A downhole isolation valve for testing the integrity of a tubular within a wellbore includes a tubular body ( | 03-08-2012 |
20120118576 | MODULAR TOOL FOR WELLBORE CLEANING - Modular debris chambers of a debris extraction tool and a method for collecting debris using such modular debris chambers are disclosed. The modular debris chamber for a debris extraction tool may include a plurality of debris chambers. The modular debris chamber may include a bucket for collecting debris, an inner flow tube being concentrically arranged within the bucket, and a deflector arranged in a lower end of the bucket for deflecting a flow of debris from the inner flow tube of a subsequent modular debris chamber connectable to a lower end of the modular debris chamber. The method for collecting debris using a modular debris chamber may include a plurality of the modular debris chambers interconnected to form a debris extraction tool, and reflecting fluid off the deflector allowing solid debris in the flow of debris to deflect off the deflector into the bucket of a subsequent modular debris chamber. | 05-17-2012 |
20120118584 | MODULAR TOOL FOR WELLBORE CLEANING AND METHOD OF USE - A sealing means for debris chambers of a debris extraction tool and a method for dismantling and handling a debris extraction toll using such sealing means are disclosed. The sealing means for a debris chamber for a debris extraction tool may include a cylindrical body sealed at one end and open at the other end. The open end may be connectable to an end of the debris chamber. The method for dismantling a debris extraction tool, wherein the debris extraction tool comprises a plurality of connected debris chambers, may use the sealing means and may include connecting the sealing means to the topmost debris chamber of the debris extraction tool. | 05-17-2012 |
20120132438 | DOWNHOLE TOOL AND METHOD - A work string tool to be operably associated with a weight-set packer tool uses pressure applied by fluid circulated from the surface above the weight-set packer, to deploy a hydraulic hold-down anchor mechanism above the packer to reduce the risk of unsetting during a high pressure “positive” wellbore integrity test. An axial bore of a tool tubular body houses first and second inner sleeves, and is configured to accommodate independent axial movement of the sleeves to provide multiple fluid flowpath configurations through the tool which allow use of circulation fluid to pressure to circulate a ball obturator to a valve seat in a sleeve when a configuration change is required to deploy or release the anchor means. | 05-31-2012 |
20130168087 | DOWNHOLE TOOL AND METHOD - A downhole packer for providing a seal in a well bore to allow integrity testing of well bore with drill ahead capability immediately thereafter has a disengageable packer assembly wherein the packer element may be rendered disengageable by mounting the packer to the string using a tool body ( | 07-04-2013 |
20130174408 | CLAMP | 07-11-2013 |
20130175044 | RETRIEVABLE SUBSEA DEVICE AND METHOD - A protective device for a blow out preventer stack (B.O.P.), and a sidetracking method using same during an oil-field milling or drilling operation requiring a window to be formed in casing ( | 07-11-2013 |
20130220596 | WELLBORE CLEANING METHOD AND APPARATUS - This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. | 08-29-2013 |
20130291962 | VALVE SEAT ASSEMBLY, DOWNHOLE TOOL AND METHODS - A circulation tool includes a tubular outer body having a main bore and at least one flow port in a wall thereof, and a valve seat assembly including a valve body, a valve member, and locking elements are movably mounted within the outer body main bore. The valve seat assembly is biased towards a first position in which flow through the outer body flow port is prevented and the locking element is in the extended position, restricting passage of the valve member along the valve body bore and out of the valve body. The valve seat assembly is movable to a second position in which the locking element is in the retracted position, permitting passage of the valve member along the body bore and out of the body. The valve seat is also movable to a third position in which flow through the outer body flow port is permitted. | 11-07-2013 |
20140144644 | Fluid-Actuated Downhole Tool - A tool for cleaning a casing tubular (13⅜″) via a narrower casing tubular (9⅝″) or width restriction, has an elongate tool body | 05-29-2014 |