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WO/2008/076952A2 |
A method to clean a wellbore and the near wellbore area adjacent to the wellbore of a hydrocarbon bearing and/or coal bed methane formation adjacent to the production zone of the wellbore is provided. Specifically, a method for removing ...
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WO/2008/047107A1 |
The invention relates to a cement evaluation method and tool. In particular, the invention relates to a method of producing a wellbore cement bond log for evaluating a condition of cement in cased or lined portions of wellbores, and to a...
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WO/2008/048817A2 |
An engine/steam generator which converts hydrogen peroxide to superheated steam and oxygen and having an afterburner that together with a reducing agent, utilizes the oxygen, thereby supplying oxygen free super-heated steam under pressur...
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WO/2008/045734A2 |
Nanoemulsion, macroemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor I1 Il or III phase behavior) or single phase microemulsions (Winsor IV) improve the removal of filter cakes formed during hydroca...
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WO/2008/032067A1 |
Methods are provided for increasing the temperature of a section of conduit used for the production or transmission of hydrocarbon. According to one aspect, the method includes the steps of: (a) forming a treatment fluid comprising: (i) ...
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WO/2008/024547A2 |
An apparatus incorporating a chemical seal and method for removing fluids from a well is disclosed. The chemical seal is created by a foaming agent which, when in the presence of gas and fluids present in the well, and when agitated by t...
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WO/2008/024035A2 |
The device relates to oil production and can be used to intensify oil recovery by using acoustic action to destroy paraffin, asphaltic tar and hydrate glacial formed in the oil wells. The device can be useful in the oil wells equipped bo...
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WO/2008/017849A1 |
A method of treating liquid, particularly an oil/water mixture, in an oil well pipe (10), wherein a radio frequency propagating electrical field is established in the liquid in the pipe cause the formation of seed crystals or scale-formi...
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WO/2008/016961A1 |
A method for drilling a well with a drilling apparatus comprising a drill string and a bit, comprising attaching a cleaning tool comprising a coaxial pipe and at least one vortex spinner to a portion of the drill string above the bit, in...
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WO/2008/017019A2 |
A wellbore cleanup tool collects debris when moved in one direction downhole. A flow diverter is extended for such flow diversion when debris is collected. When running the tool in the opposite direction in the wellbore, the flow diverte...
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WO/2008/014559A1 |
A well cleaning apparatus comprises water jets rotating on a vertical feed conduit which is rotatably mounted at the top of the well and fed by a stream of fluid pumped from the well by a submersible pump. The apparatus has a housing att...
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WO/2008/016965A1 |
A method for cleaning debris from a wellbore having a top and a bottom comprising inserting cleaning tool comprising a coaxial pipe in the wellbore, pumping fluid through the cleaning tool to create a fluid flow in a direction towards th...
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WO/2008/011280A1 |
A flow diverter tool (10) assembly is employed for flushing debris from a portion of the bore of a subsea production tree (100). The flow diverter tool assembly has a housing (12) having a passageway (18) there- through and a seal (40) d...
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WO/2007/143324A1 |
A stop collar for securing a centralizer in place on a large diameter casing segment comprises a collar adapted for forming an annular chamber when received onto a casing segment. The stop collar is adapted for receiving a liquid gel epo...
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WO/2007/140157A1 |
A process for generating and subsequently breaking a filter cake, including dissolving a non-reactive gas in a wellbore fluid to form an energized fluid; pumping the energized fluid into a formation at a downhole pressure, wherein the pu...
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WO/2007/133558A2 |
Methods and compositions are disclosed to engineer chloroplast comprising heterologous mammalian genes via a direct replacement of chloroplast Photosystem II (PSII) reaction center protein coding regions to achieve expression of recombin...
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WO/2007/128425A1 |
Apparatus for borehole cleaning, comprises: a tubular conveyance for extending from the surface into a borehole to a region to be cleaned; a motor mounted at the end of the tubular conveyance that in use is introduced into the borehole; ...
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WO/2007/113477A1 |
The invention relates to a wellbore cleaning assembly, wellbore cleaning apparatus comprising a wellbore cleaning assembly, and to a method of cleaning a wellbore. In an embodiment of the invention, a wellbore cleaning assembly (10) is d...
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WO/2007/107502A1 |
The present invention relates to the use of a specific group of alkoxylated and/or acylated non-quaternary nitrogen-containing compounds as anti-agglomerants for gas hydrates. The anti-agglomerants are surface-active non-quaternary nitro...
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WO/2007/108692A1 |
The present invention concerns a washing tool (3) for cleaning well and onshore/offshore drilling equipment. The tool (3) includes a longitudinal tubular body with an upper end, a lower end and a central longitudinal boring therethrough....
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WO/2007/106421A1 |
A method for extracting hydrocarbons from a vessel by displacement. The method including the displacement of a hydrocarbon source with a material of different density and recovery of the hydrocarbons from the vessel. Additionally, a meth...
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WO/2007/093771A1 |
This invention relates to a downhole assembly (10) and to a cutter assembly, and in particular to a downhole assembly including an apparatus for breaking up large-scale material which is present behind a drill bit (12) , and to a cutter ...
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WO/2007/093761A1 |
Methods for remediating a subterranean environment. Methods comprising introducing a cleanup fluid through a well bore and into a portion of a subterranean formation penetrated by the well bore, applying a pressure pulse to the cleanup f...
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WO/2007/081240A1 |
A method for cleaning of face zones and filters of gas-and-oil-producing and water-injecting wells comprising : pumping fluid into the wellbore, supplying instantly via suppplying lines using a pneumatic generator, a compressed gas agent...
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WO/2007/082207A1 |
A method for removing water from a wellbore fluid is disclosed. The method may include the steps of contacting a wellbore fluid with a water absorbing polymer, where the wellbore fluid includes an aqueous fluid, allowing the water absorb...
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WO/2007/077411A1 |
The present invention provides a conveyance tool and a tool string having one or more sensors or cameras for detecting the performance of pre-existing perforations in a cased wellbore, and one or more perforation intervention tools mount...
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WO/2007/063022A2 |
A tool (2) for washing a wellbore or hollow tubular has a longitudinal axis and comprises one or more elongate nozzles (7) for ejecting fluid generally radially from the tool. The or each nozzle extends circumferentially around the tool ...
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WO/2007/017353A1 |
A system is provided for injecting an injection fluid into an earth formation via a wellbore formed in the earth formation and for producing hydrocarbon fluid from the earth formation via the wellbore. The system comprises an injection c...
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WO/2007/011475A1 |
The present invention provides environmentally friendly cleaning formulations that have particular application to oil and gas well drilling. The formulations have been shown to be effective in removing oil-based drilling mud from rock cu...
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WO/2007/003894A2 |
This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. In one embodiment of the invention, a method of drilling and cleaning a wellbore (12) i...
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WO/2007/004886A1 |
A system for cleaning compressors (1) that are situated at a difficultly accessible location, e.g., on or near the seabed or downhole in a well bore, comprises a cleaning liquid line (8) extending between a readily accessible liquid sour...
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WO/2006/123109A1 |
A device (12) is disclosed which is for use in retrieving debris from a well. In one embodiment, the device includes an elongate body (20); a main bore (22) extending part way along a length of the body, along which fluid flows into the ...
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WO/2006/121699A2 |
A subassembly for a downhole drill string has a hollow outer body or barrel with a plurality of blade openings. A plurality of blade sets extends outwardly through the openings. Fluid flow inlets are provided in the lower section of the ...
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WO/2006/120453A1 |
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. In one embod...
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WO/2006/109008A1 |
Apparatus for removing debris from a wellbore is disclosed. The apparatus has a conduit for insertion into the wellbore, a device such as a pump for generating a pressure difference in the wellbore, and a seal such as a packer defining a...
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WO/2006/104711A2 |
A method for cleaning oil wells to increase the flow of oil thereof by use of a unique aqueous cleaning emulsion comprising of water, hydrocarbon solvent, detergent and mineral acid. This one step method provides for the simultaneously c...
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WO/2006/097710A1 |
A multi-function downhole apparatus (10) is described which comprises a tubular main body (12) having at least one recess (11) formed in its outer surface. The recess (11) is adapted to receive any of a set of interchangeable tool elemen...
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WO/2006/097706A1 |
Downhole apparatus (10) is described having a tubular main body (12) and at least one flow channel (14) formed on the body. The channel (14) has at least one non-uniform dimension. A flow guide (16) is located adjacent an end of the chan...
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WO/2006/093863A2 |
A method and composition for protecting cement surfaces in a well bore treatment zone from the destructive effects of acid mud and other acidization processes commonly used to stimulate hydrocarbon production from the formation, includes...
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WO/2006/092438A1 |
The invention relates to the use of alkane sulfonic acids, in particular methane sulfonic acid for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contami...
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WO/2006/085791A2 |
The invention relates to the oil industry. The inventive method for heating a well with the aid of a deep-well pump is carried out by supplying electric power through hollow pump rods to tubing strings which, being heated, transfer a hea...
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WO/2006/075913A1 |
A system for power supply to subsea installations and plants for production of hydrocarbons, comprising a preferably heat insulated pipeline (10), in which the possibility for internal formation of detrimental hydrates or wax deposits ar...
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WO/2006/069088A1 |
A method for extracting accumulated material from a well bore (102) includes pressurizing gas recovered from the well bore (102) and disposing an extraction string (104) in communication with a sump (116). The sump (116) is disposed to r...
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WO/2006/068929A1 |
A system for assuring subsea hydrocarbon production flow in pipelines by chilling the hydrocarbon production flow in a heat exchanger and causing solids to form, periodically removing deposits and placing them in a slurry utilizing a clo...
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WO/2006/052157A1 |
The invention relates to the oil industry and can be used for putting into operation paraffined oil wells in different climatic regions. The inventive method differs form the known methods in that it consists in simultaneously controllab...
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WO/2006/029203A1 |
An apparatus and method for controlling and/or minimizing the formation or accumulation of unwanted deposits on the inside of fluid flow paths by employing at various locations along the path an assembly of permanent magnets oriented suc...
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WO/2006/026849A1 |
A method of foam emulsion well cleanout for gas well. An emulsifier apparatus is provided having a compressed air inlet, a foaming solution inlet and a foam outlet. He compressed air inlet is connected to a source of compressed air capab...
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WO/2006/021771A1 |
A clamp (10) for holding two members (12, 14) together. The first member includes a recess (30) into which a fastener (38) is located. A further access port (42) is provided to the recess to allow a tool (44) to be used to operate the fa...
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WO/2006/019546A1 |
A fluid conditioning system designed to be installed between the well perforation and the intake of a pump used to effect artificial lift is used to filter and chemically treat production fluids. The fluid conditioning system is an appar...
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WO/2006/016102A1 |
Downhole cleaning apparatus in the form of a casing scraper (10) comprises body (12) and cleaning members (22) mounted on the body. The cleaning members (22) are selectively movable from a retracted configuration to an extended cleaning ...
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