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WO/2004/044370A2 |
Provided are methods and apparatuses for extracting, transporting and/or releasing various kinds of material. Generally speaking, such methods and apparatuses involve vacuum-based (or low-pressure-based) components which, in the preferre...
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WO2004009954A9 |
This invention proposes a method for completing an interval of an open-hole injection wellbore penetrating a subterranean formation, said wellbore being communicating with the formation by way of an interface that comprises at least a fi...
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WO/2004/033850A1 |
A flow assurance system includes an inner pipe (70) disposed within an outer pipe (50) to assure flow through the outer pipe (50). During installation and relative axial movement with the outer pipe (50), the inner pipe (70) is nearly ne...
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WO/2004/025067A2 |
An oil well capsule (10) to reduce the paraffin, asphaltene, and hydrates which accumulate on the walls of the pipes which are used to bring the oil up from underground deposits, and a method of using said oil well capsule (10). An oil w...
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WO/2004/024309A2 |
A method for mitigating the deposition of wax on production tubing walls (12). The method comprises positioning at least one ultrasonic frequency generating device (14) adjacent the production tubing walls and producing at least one ultr...
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WO/2004/020775A2 |
An apparatus and method for removing cuttings in a deviated borehole using drilling fluids. The apparatus includes a pipe string and a bottom hole assembly having a down hole motor and bit for drilling the borehole. The pipe string has o...
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WO/2004/018834A1 |
Disclosed is a method for introducing additives into an oil, gas, or water injection well or pipeline in solid form at a location other than at the bottom. The method is practiced using pellets having a density sufficient to suspend the ...
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WO/2004/018118A2 |
The invention relates to methods and associated devices for removing incrustations, deposits and biofilms in parts of existing open and/or closed fluid systems in a reliable and economical manner. The invention provides several devices a...
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WO/2004/016904A1 |
A system monitors and controls the injection of additives into formation fluids recovered through a subsea well. The system includes a chemical injection unit (150) and a controller (152) positioned at a remote subsea location. The injec...
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WO/2004/013446A2 |
A drill bit sub (10) attachable to a drilling string (16) above the drill bit (12), the sub (10) having an oscillation chamber (44) with at least two radially and axially spaced, annular impingement surfaces (28, 32) interconnected by an...
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WO/2004/005668A1 |
A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter...
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WO/2003/098104A2 |
An apparatus (10) for introducing a vapor-containing stream into underground geological formations, pumps, conduits or tanks comprising; at least one vaporcontaining stream generator (16,32) having a liquid hydrogen peroxide fuel intro...
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WO/2003/095792A1 |
A method and a device for removing a hydrate plug (38) from a pipeline (16), wherein a pig (1), which is connected to an umbilical (2) extending to surface, is displaced down into the pipeline (16) until proximity of the hydrate plug (38...
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WO/2003/093635A1 |
A downhole cleaning tool (10) for oil and gas wells. Brushes, scrapers, wipers (32) and the like are mounted on a sleeve (14) over a tubular body (12), and the members successively moved towards and away from an inner surface of a tubula...
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WO/2003/087533A1 |
A tool and method for treating an open hole just before expanding a screen (26) into position is described. The swage (16) is hydraulically driven and permits flow through it and out lateral ports (20) to impact the borehole wall. A cup ...
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WO/2003/087526A1 |
A downhole tool (10) for use in oil and/or gas well bores. The tool has a tubular body (20) and a sleeve (22) including stabiliser blades (30). The tool is ball (76), activated, weight activated or hydraulically activated to selectively ...
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WO/2003/085604A1 |
A well servicing system includes a computer-based system that monitors pumping or other service operations at a well site and monitors deliveries and withdrawals of chemicals at a bulk storage station. A GPS device or other location iden...
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WO/2003/083253A1 |
A junk removal tool (10) for use in a well bore. The tool includes a multi-faceted face (42) of tungsten carbide to break up large pieces of junk. The junk is then captured in the tool via large area inlet ports (40) and collected in a t...
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WO/2003/071245A2 |
The pressure reading tool (60) includes a housing (66) with an interior chamber (84) and an orifice (76) extending from the chamber to the exterior of the housing (66). A pulse member (70) with a magnetostrictive ring (88) and an excitat...
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WO/2003/069112A1 |
A wellhead seal unit for sealing a subsea oil and&sol or gas well at the wellhead. The unit comprises a sleeve, sealingly engaged to the workstring and to which, blow out preventer rams can engage. The unit allows the workstring to be ro...
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WO/2003/067016A2 |
A retrievable pig apparatus (10) having a substantially cylindrical body portion (32), the body portion (32) having a central flow bore (34) therethrough, and secured to coiled tubing (22), including a central fluid flow bore (34) in flu...
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WO/2003/046333A2 |
A thermoacoustic Power generator (3) for generating electricity within or in the vicinity of a gas transportation conduit (2), such as a production tubing in a gas production well, comprises an acoustic resonance cavity (7) having an inl...
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WO/2003/044317A1 |
A method of drilling a borehole in an earth formation is provided, comprising the steps of: a) inserting a plurality of selected solid magnetisable particles into the borehole, the particles being susceptible of forming a filter cake lay...
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WO/2003/036020A1 |
A method and device for loosening and collecting sand and other contaminations, by means of a collecting device (1), from a tubular space (30) especially in petroleum wells, wherein the sand and other contaminations are fed into a recept...
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WO/2003/035793A1 |
The invention relates to the field of drilling wells into a subterranean formation for the purpose of extracting or producing minerals contained by said formation. The invention specifically relates to drilling fluids used in such method...
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WO/2003/033861A1 |
The invention relates to oil industry, in particular to production well servicing by means of deep insert sucker-rod pumps. The insert pump is removed from a well. Said pump being replaced and run into an oil-well tubing (2), an anchor c...
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WO/2003/031770A1 |
The invention relates a tool for cleaning of bore holes for oil or gas. The tool is mounted rigid to a supply tube and is foreseen with a rotating head (2) witch bears nozzles (3) which are directed to the inner wall of the tube. In the ...
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WO/2003/031950A1 |
The present invention provides a method and system for controlling mineral scale deposition from a formation fluid. The rate at which scaling is occuring is measured in real time using an attenuated total reflectance probe and a photomet...
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WO/2003/025339A1 |
The invention relates to a device for cleaning an inner pipe inserted into a gas or oil conveying boring. This device comprises a hollow rod inside of which a pressurized medium can be conveyed and to which a cleaning device is connected...
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WO/2003/012253A2 |
A method of reducing the aggregation and deposition of asphaltene from a fluid containing asphaltene, such as crude oil, which method comprises the addition to the fluid of a compound of formula (I): wherein A is an optionally substitute...
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WO/2003/008757A1 |
The invention relates to an additive, the use thereof and a method for inhibiting the seeding, growth and/or agglomeration of gas hydrates, whereby an effective amount of an inhibitor is added to a multi-phase mixture, comprising water, ...
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WO/2003/006787A1 |
An apparatus that combines mechanical scouring with hydraulic jetting action to brush and condition the internal surface of tubular structures such as well liner or casing. A liner brushing and conditioning tool comprises a mandrel (3) w...
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WO/2002/095186A1 |
An apparatus for cleaning calcites and other extraneous matter from the perforated casing of a sub-terrainian water well comprises a plurality of elongate explosive members (14) for lowering into the well, detonators (16) for detonating ...
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WO/2002/081858A1 |
A downhole tool (20) is provided for use within a casing (10). The tool includes a collector tool that comprises: a cylindrical body (21) having an external diameter smaller than the casing diameter so as to form an annular gap (5) betwe...
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WO/2002/081859A1 |
A tool for retrieving metal debris from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body (10). Each magnet assembly has a magnet member (42), which forms a primary debris settling area (70). Each ma...
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WO/2002/079604A2 |
The present invention provides a down-hole tool (7) with at least one radially outwardly deployable tool element (33) for use in a bottom hole assembly (1) provided with a pressurised down-hole motor drive fluid supply (50). The tool (7)...
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WO2000014378A9 |
A self-firing and self-propelling gas impulse device (10) which includes a housing (12) having a longitudinal axis (75), a gas inlet port (18a), and one or more gas discharge ports (20); an inlet chamber (16), arranged for gas communicat...
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WO/2002/066785A1 |
A method and a composition used therein are disclosed for inhibiting formation of hydrocarbon hydrates. The composition comprises an onium compound, an amine salt and, optionally, a solvent. The method and composition are particularly us...
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WO/2002/063203A2 |
A method of diminishing the size of the cross section of an opening of a first hollow device (3) is disclosed. The first hollow device (3) is located in an undersea flow pipe (1) through which passes a fluid flow. First a second hollow d...
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WO/2002/055831A2 |
An improved method of controlled energy delivery utilizing solid, liquid, and gaseous carbon dioxide (CO¿2?) into a water well and the surrounding aquifer to remove deposited material which may cause loss of capacity in wells and a vari...
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WO/2002/055225A1 |
A method of washing pipes comprising the steps of intermittently or continuously driving carbon dioxide gas into a pipe, wherein the foaming action of the carbon dioxide gas dissolved in the water in the pipe is used to wash the interior...
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WO/2002/053872A1 |
The invention discloses an automatic paraffin scraping device comprising a scraper, an upper switching device connected to the wellhead and a lower switching device connected to the section of well casing above which the paraffin deposit...
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WO/2002/044518A1 |
A system for cleaning of vertical risers at floating drilling rigs, which comprises the following main components: a high-pressure pump (16) ; an umbilical hose (26) comprised of a hydraulic tubing and an electric cable, a cable winch un...
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WO/2002/044519A1 |
The invention relates to the use of polymers which contain between 1 and 99 mol. % structural units of formula 1, wherein R?1¿ represents hydrogen or C¿1?-C¿6?-alkyl, R?2¿ represents C¿1?-C¿24?-alkyl, C¿2?-C¿24?-alkenyle or a C¿...
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WO/2002/042014A1 |
A drilling head (1) is disclosed, in particular for introduction into pipelines, with a rear connector piece (2) and a forward cutting body (3) of the size of the diameter, comprising cutting ribs (4), extending in the advancing directio...
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WO/2002/042601A1 |
A traction apparatus (1) for propulsion along a bore comprises first and second traction members (6) having outwardly extending legs (14). A propulsion system for operating the traction members (6) comprises a turbine-driven shaft (7) wh...
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WO/2002/035017A1 |
A pressurized cannister or sealed vessel is filled with a disinfectant agent, for example chlorine. A discharge jet is either attached to the vessel or to a hose attached to the vessel, and the discharge jet delivers the disinfectant age...
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WO/2002/035055A1 |
A downhole tool (1) for providing the dual role of cleaning and milling within a wellbore casing or liner is described. In an embodiment scraper blades (6) are mounted on a body (2) together with a milling sleeve (4). Additionally, a cen...
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WO/2002/035061A2 |
The invention relates to a method for improving the supply of water from a layer in the earth to a source which is located in the ground or a well, especially a water procurement well, said source or well consisting of a drill hole exten...
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WO/2002/025060A1 |
The present invention relates a method and an arrangement for preventing hydrate formation in a shut down pipeline (1) by removing or reducing the hydrostatic pressure produced by the fluid in a riser (2) on the fluid in the pipeline (1)...
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