Class / Patent application number | Description | Number of patent applications / Date published |
166170000 | BRUSHING, SCRAPING, CUTTING OR PUNCHING-TYPE CLEANERS | 29 |
20080308269 | Washing a Cylindrical Cavity | 12-18-2008 |
20100200219 | Frame-less, Split Pipe Wiper - The frame-less, split pipe disclosed herein includes a fixed actuator assembly with carries a blade-like pipe wiper element and a sliding actuator assembly which carries a similar blade-like pipe wiper element. Each of the pipe wiper elements is disposed between a clamp and the base of their respective actuator assemblies. The sliding actuator assembly is disposed in a pair of channels disposed above the claim of the fixed actuator assembly. A pair of pneumatic cylinders, one on each side of the fixed actuator assembly moves the sliding actuator assembly between open and closed positions. For installation, removal or maintenance on a pipe wiper it may be split into two open-throated components by removing the pins which attach the operating rods of the pneumatic cylinders to clevises of the sliding actuator assembly. | 08-12-2010 |
20100307738 | WELL CLEANING APPARATUS - An apparatus for removing debris from a well is provided. The apparatus comprises a tool body having a head, a chamber, a connector, a conduit, and a filter. The head has an opening and comprises protrusions extending from the outer surface for moving debris. The chamber is in the tool body to store debris. The connector is for attaching the tool body to a drilling system. The conduit is connected to the opening in the head to convey debris and fluid from the well to the chamber. The filter is in the tool body to limit the size of the particles that can pass into the drilling system from the chamber. In use, fluid flow and the protrusions move the debris from the well and through the apparatus. | 12-09-2010 |
20110036563 | COUPLING BETWEEN WELLBORE TOOLS HAVING CENTRAL TRANSMISSION SHAFTS - Two well tools ( | 02-17-2011 |
20110198075 | IN-PIPE WORK DEVICE - According to an embodiment, an in-pipe work device is inserted into a pipe and remotely controlled by a control device to perform an operation for an inner surface of the pipe. The in-pipe work device has: a main unit; a main-unit support unit; a rotation arm; a process head; a first distance sensor; and a process head position adjustment mechanism that changes a distance from a rotation center of the rotation arm to the process head. The control device makes the process head position adjustment mechanism expand and contract based upon a result of measurement by the first distance sensor and operation condition information that is input in advance. | 08-18-2011 |
20120145377 | DOWNHOLE TOOL HEAD FOR RELEASING PRECIPITATED SOLIDS - The present invention relates to a downhole tool head ( | 06-14-2012 |
20120241145 | DOWNHOLE SCRAPING AND/OR BRUSHING TOOL AND RELATED METHODS - An improved and enhanced spring loaded downhole tool for cleaning well casing bores comprising a mandrel, at least a first insert having a passageway therethrough, and at least a second insert, wherein both the first insert and the second insert are selected from at least one of a spring loaded scraper insert and at least one wire brush insert, and further wherein the first insert and the second insert are slidingly received within a slot on a first mounting portion on the mandrel and a slot on a second mounting portion on the mandrel, from the outermost respective ends, and wherein the first insert is secured by a first retaining sleeve and the second insert is secured by a second retaining sleeve. Also disclosed is a unique method for cleaning a section of casing with a downhole tool, as herein disclosed. | 09-27-2012 |
20140374087 | ROTATING SWIVEL BRUSH FOR EXTERNAL CLEANING OF TUBULARS - Methods are disclosed for performing operations such as cleaning, inspection or data acquisition on an external surface of a hollow cylindrical tubular. Preferred embodiments include providing a fluid dispenser and an abrasion assembly on a buggy that travels up and down the length of the tubular as the tubular rotates. The fluid dispenser includes nozzles that dispense cleaning fluids onto the tubular's external surface. The abrasion assembly includes a swivel brush and a brush train providing different styles of abrasion cleaning of the tubular's external surface. Preferred embodiments of the buggy also carry a range finding laser generating samples of the distance from the laser to a sampled point on the tubular's external surface. The laser samples are processed in real time into surface contour data. Cleaning and inspection variables such as tubular rotational speed, or buggy speed, may be adjusted responsive to measured surface contour data. | 12-25-2014 |
166172000 | Bow spring type | 1 |
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 |
166173000 | On tubing or casing | 15 |
20080245523 | Cleaning apparatus - A cleaning apparatus for cleaning the inner surface of an oil or gas production tubing includes a tubular body, one or more cleaning elements mounted on the outer surface of the body and an elastically deformable stabiliser rotatably mounted on the body to centralise the apparatus in the tubing whilst also allow the body to pass though areas of reduced diameter in the production tubing. Preferably, there are a pair of spaced apart stabilisers having a web arrangement of spars with a flange at each end. | 10-09-2008 |
20080257541 | Wellhead isolation tool including an abrasive cleaning ring - A wellhead isolation tool includes a lower mandrel sized and shaped for insertion through a wellhead into a length of wellbore tubing. The wellhead isolation tool includes an improved sealing assembly connected to the lower end of the mandrel. The sealing assembly includes a conventional elastomeric cup deployed about a cup carrier for sealingly engaging an inner surface of the tubing. The sealing assembly further includes an abrasive cleaning ring deployed below the cup (e.g., between the cup carrier and the bull nose). Corrosion products, scale, and/or other debris may be advantageously removed from the tubing via the abrasive action of the cleaning ring, thereby promoting a better seal between the cup and the tubing. | 10-23-2008 |
20090272524 | Method and apparatus for cleaning internal surfaces of downhole casing strings and other tubular goods - A downhole cleaning assembly and method of cleaning a tubular. Generally, the downhole assembly is connected to a work string concentrically located within a casing string. In one embodiment, the downhole assembly comprises a tool body operatively connected to a work string. At least one pad member is connected to the tool body, with the pad member having cutting technology, such as, for example, hardened elements or “inserts,” (commonly used in connection with drill bits) along certain outer peripheral surfaces of the pad member. Such cutting technology includes, but is not necessarily limited to, Polycrystalline Diamond Compact (PDC) inserts, tungsten carbide inserts or diamond bit elements commonly used in connection with drill bit technology. | 11-05-2009 |
20100000728 | METHODS AND APPARATUS FOR REMOVING DEPOSITS ON COMPONENTS IN A DOWNHOLE TOOL - Methods and apparatus for removing deposits on components in a downhole tool are described. An example apparatus to remove a deposit on an inner surface of a flowline in a downhole tool includes a movable scraper disposed in a flowline of a downhole tool. The movable scraper is configured to selectively obstruct the flowline so that a fluid flowing in the flowline moves the movable scraper in the flowline. Additionally, the movable scraper has an outer surface configured to engage an inner surface of the flowline so that movement of the outer surface along the inner surface removes a deposit on at least a portion of the inner surface. | 01-07-2010 |
20100096121 | BRUSH FOR A WELL BORE CASING - A brush for cleaning debris from the inner surface of a well bore casing. The brush includes an inner base ring adapted to fit on a shaft, and at least one bristle assembly engaged around the circumference of the base ring. The brush features wire bristles extending radially from its circumference forming a brushing surface, and at least one channel formed in the brushing surface to provide for the evacuation of loosened debris. | 04-22-2010 |
20100096122 | Wellbore Cleaning Devices - Non-rotating tubular wellbore cleaning devices are described which include a central tool mandrel with radially surrounding stabilizers and a cleaning member subassembly. A rotational bearing is provided that is partially radially recessed, thereby improving the overall strength of the cleaning device. | 04-22-2010 |
20100258298 | Slickline Conveyed Tubular Scraper System - A downhole tubular scraper is run in on slickline with an on board power supply. It features counter-rotating scrapers without an anchor in one embodiment or an anchor with single rotating scrapers. The scraper is selectively operated to conserve power in the power supply. A drive system uses a single driver to obtain counter-rotating motion in the scrapers. | 10-14-2010 |
20110168383 | Cleaning Device - A cleaning device for use in subterranean fluid production which includes a tool mandrel and a retaining sleeve surrounding the tool mandrel. One or more C-ring-style support rings are used to support and bias cleaning members, such as scraper blades, into contact with the interior radial surface of a retaining sleeve. | 07-14-2011 |
20110186287 | Cleaning Device - A cleaning device for use in cleaning wellbores and other tubular members in subterranean fluid production operations. The cleaning device includes a tool mandrel with cleaning components, such as a scraper assembly and stabilizers, secured thereupon with an attaching ring assembly. The attaching ring assembly includes a housing and a plurality of locking wedges that are movable with respect to the housing. | 08-04-2011 |
20110265988 | Wellbore Cleaning Devices - A wellbore cleaning device having a unitary tool mandrel surrounded by a retaining sleeve that is rotatable with respect to the mandrel. A locking ring is used to secure the retaining sleeve to the mandrel. Cleaning blades are retained within recesses in the retaining sleeve and are biased radially outwardly from the recesses by springs. | 11-03-2011 |
20110308786 | DIVERTER CUP ASSEMBLY - A downhole cleaning tool for cleaning a casing is provided with a diverter cup assembly ( | 12-22-2011 |
20120111557 | LANDING SUB FOR A WIPER - A landing sub for a wiper, the wiper being adapted for internal removal of drilling mud from a drill string during its pull-out from a borehole, wherein the landing sub is mountable in the drill string, the landing sub comprises a longitudinal bore for through-flow of drilling mud and a landing seat for receiving the lower end of the wiper during pumping of drilling mud through the drill string, and the landing seat is equipped with at least one duct or passage for through-flow of drilling mud past the lower end of the wiper during continued pumping of drilling mud in the drill string. | 05-10-2012 |
20120255724 | DOWNHOLE TOOL FOR BOREHOLE CLEANING OR FOR MOVING FLUID IN A BOREHOLE - The present invention relates to a downhole tool ( | 10-11-2012 |
20120298350 | Well Cleaning Tool - A well cleaning tool including a tubular body, a cylindrical sleeve and at least one scratching element. The tubular body includes a threaded lower end for attaching to an end cap, and a plurality of first passages. The cylindrical sleeve is sized to receive the tubular body and includes a plurality of second passages such that the second passages are in alignment with the first passages. The at least one scratching element is preferably a rigid cable with frayed ends that is passed through the aligned first and second passages such that the frayed ends outwardly extend from an outer surface of the sleeve. Threading or tightening the tubular body lower end to the end cap will cause the first and second passages out of alignment, causing the rigid cable to crimp or pinch between the first and second passages, retaining the rigid cable in place. | 11-29-2012 |
20130192818 | DEVICES, SYSTEMS AND METHODS RELATING TO DOWN HOLE OPERATIONS - Systems and method for improving down hole operations of well casings are disclosed herein. Systems and methods disclosed herein can comprise brushes, high pressure fluid outlets, and skids. Other systems and methods are disclosed herein. | 08-01-2013 |
166174000 | Retractable on support while lowering | 5 |
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 |
20090218092 | DOWNHOLE CLEANING TOOL - A downhole cleaning tool comprising: a substantially cylindrical body; at least one cleaning member extending from the cylindrical body and being movable between a retracted position and an active position in which the cleaning member is positioned to clean an internal surface of the well bore; and switching means adapted to receive a force applied in a first direction and responsively move the at least one cleaning member from the retracted position to the active position. | 09-03-2009 |
20100032154 | Scale Removal Assembly - An assembly for cleanout of scale buildup from a wall of a hydrocarbon well. The assembly is configured to be deployed and operated under pressure without the requirement of coiled tubing to deliver cleanout fluid. The assembly may include a plug for sealing against the wall of the well immediately above the location of scale buildup. A cleanout tool, such as a jetting nozzle may be coupled to the downhole side of the plug. Thus, fluid and pressure may be provided to the well uphole of the plug. In this manner, the plug may direct the fluid to the jetting nozzle to achieve cleanout of the scale buildup. | 02-11-2010 |
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 |
20160061006 | Expandable Brush - Expandable brushes for cleaning a surrounding tubular member. Brushes include a housing to be disposed within the surrounding tubular member and a brush shoe that retains at least one brush bristle, the brush shoe being radially moveable with respect to the housing between a radially retracted position and a radially expanded position. | 03-03-2016 |