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WO/2006/048210A1 |
A well treatment tool, comprising: a tool body; a clamping system for locating the tool body in a well; a positioning system for orienting the tool body in the well axially and azimuthally; a reservoir system comprising at least one flui...
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WO/2006/040147A2 |
An injection apparatus for injecting an activated fluid into a well-bore comprises a reservoir (3, 103, 203, 303) containing an activation fluid AF. The injection apparatus further comprises: a valve arrangement (2, 102, 202, 302) adapte...
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WO/2006/020206A2 |
Milling in casing that is over 4-1/2 inches is done with coiled tubing that is anchored against torque reaction. An improved debris catcher is part of the bottom hole assembly to capture cuttings from the milling. A thruster can be used ...
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WO/2005/071208A1 |
A system for drilling a lateral hole departing from a main well. The system comprises a motor assembly (415) including a motor (412) to generate a rotating torque, an axial thruster (411) to generate an axial force, a blocking system (41...
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WO/2005/035932A2 |
Junk basket (10) is provided for collecting debris from a wellbore cleaning operation, and includes a central mandrel (14) having a throughbore (16) and an outer shell (24) defining a generally annular junk space (40). The outer shell (2...
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WO/2005/033471A1 |
A feed pump (1) for supply of drive fluid to a sand removal apparatus (10) in an underground well (2), in which the sand removal apparatus (10) comprises a sand chamber (12) and a jet pump (14), the jet pump (14) being of an arrangement ...
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WO/2005/003648A1 |
A method of constructing a geothermal heat exchanger, which method comprises the steps of: - (1) drilling a borehole (34) in the ground using a tubular (28); (2) vibrating said tubular (28); and (3) installing a heat loop (50) in said bo...
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WO/2004/097155A2 |
The invention is comprised of (see fig. 1) an inner pipe (2), and an outer pipe (3), and two end subs (1). An isolated circular hollowed space is contained in between these components. The isolated space can be used for transport of diff...
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WO/2004/057152A1 |
It is proposed a method of delivering chemicals such as scale inhibitor into a wellbore producing fluids including providing the chemicals, in a slow-released form, through a container located in the path of the production fluids so that...
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WO/2004/053290A1 |
A downhole tool for use in a cased or lined well bore (40), the tool including a barrier (36) arranged on an outer surface of the tool. The barrier may be of a resilient material so that it can be deformed on actuation to control the pas...
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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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WO/2004/011763A2 |
A mechanical bladder pump (10) is provided for collecting fluid samples from a well (12). The pump (10) includes an outer tubular member (13) having a longitudinal bore, and an inner tubular member (14) arranged within the bore of the ou...
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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/2003/071084A2 |
The present invention discloses and claims a system for forming an opening, or window, in a downhole tubular for the subsequent formation of a lateral wellbore. In the system of the present invention, an apparatus is run into the parent ...
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WO/2003/069123A2 |
An apparatus for filtering a drilling fluid comprises a cylindrical flange member (40) having a first (56a-56b) and second passage (60a-60b) and a cylindrical sleeve (3) having an internal fishing neck (16). An attachment pin (58,62) att...
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WO/2003/042485A2 |
A well pressure control assembly includes an annular pressure containment structure useful for manipulating pipe during drilling and other well operations performed with annular pressure at the wellhead. The annular pressure containment ...
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WO/2003/036018A2 |
A downhole actuator (8) movable from a first configuration to a second configuration by the action of a selected increase of fluid pressure acting on the exterior of the actuator (8), and a tool arranged to be moved by the actuator so as...
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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/2003/001029A1 |
An improved electrical pump is first provided for use in a wellbore. The pump (100) comprises a stator (120) and a stator housing (110), and an armature (130) and an armature housing (136). The stator housing and the armature housing def...
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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/2002/081860A1 |
Apparatus and system control for the removal of fluids and gas from a well comprising winch means (56) for removing the oil (18), a temporary storage tank (22), a bailer tube (90), a bailer tube housing assembly (28), axially aligned wit...
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WO/2002/064941A1 |
A bailer device (45) and method capable of recovering liquids and agas simultaneously. The bailer device (45) consists of a bucket-type device (42) attached to an end of a line (8). The bucket-type (42) device is then raised and lowered ...
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WO/2002/063104A2 |
The present application relates to a tool having a cutting means (25, 26) for enlarging a portion of an underground pile shaft. The tool is provided with a collecting means (32) which is disposed below the cutting means in order that spo...
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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/2002/023008A2 |
In one aspect of the invention, a thermite containing apparatus (160) is run into the wellbore (105) on a wire line and a window is subsequently formed in casing wall. In another aspect of the invention, the apparatus includes a run-in s...
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WO/2002/002947A1 |
An isolation container (100) with a downhole electric pump assembly has an annular housing with an axial inlet and outlet. The pump (104) is located within the container. The assembly includes an electric pump (108) positioned above and ...
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WO/2001/098626A1 |
A system is provided for creating at least one conduit in a borehole formed in an earth formation. The system comprises a device which includes movement means for moving the device in longitudinal direction through the borehole, and inje...
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WO/2001/092685A1 |
A tracer release method for monitoring fluid flow in a well utilizes a deformable container comprising a liquid tracer material which container has an outlet which debouches into the neck portion of a venturi in a well conduit. The conta...
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WO/2001/073262A2 |
The present invention provides a simple debris removal apparatus (200) for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi (210) is provided which can be retrofit into an existing debris bailer having...
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WO/2001/069036A1 |
The present invention provides a downhole cementing apparatus (100) run into a borehole on a tubular. The apparatus is constructed on the pipe (110) in such a way that pressure surge during run-in is reduced by allowing fluid to enter th...
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WO/2001/057357A1 |
A method for the retrieval of an object from a well (16) with a tool (30) is described, in which the object, by lowering of the tool (30), is directed into a lower inlet section (40) to a hollow holding area (46) in the tool (30). The me...
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WO/2001/038691A2 |
A device (1) for injecting a fluid into an earth formation surrounding a wellbore, comprising a body suitable to be arranged in the wellbore and being provided with means for connecting the body to a tubing (14), a fluid chamber (17) for...
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WO/2001/004462A1 |
A bailer has two externally-mounted weights (20, 22). The first weight (20) is positioned at its uppermost end (16) and the second weight (22) is positioned at its lowermost end (18). The combination of weights increases the insertion ra...
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WO/2000/079091A1 |
A hard rock drill barrel has a barrel portion (4) with a downhole hammer drill (12, 13) disposed therein at the barrel's periphery. A pilot portion (6), in substantial axial alignment with the barrel (4) but having a smaller diameter, ex...
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WO/2000/066878A1 |
A borehole sealing material and method of sealing, stabilizing, or plugging boreholes. The sealing material is made by combining an oxide or hydroxide and a phosphate with water to form a slurry which cures to form a high strength, minim...
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WO/2000/063524A1 |
This present invention relates generally to a method of mixing fluids in a well bore so that the resultant mixture may be used to effect a change in a downhole tool. Specifically, the method of the present invention relates to setting an...
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WO/2000/058602A1 |
A method of cleaning a casing-lined borehole comprises the steps of: circulating fluid in the borehole to entrain material in the circulating fluid; separating the entrained material from the fluid within the borehole; and then removing ...
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WO/2000/053882A1 |
A drill for drilling wide diameter and high depth holes in the soil including a base machine (1) having a rotary (2) that is equipped with a clamp (9) and, by means of translation cylinders (8), rotates and axially moves a series of dril...
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WO/2000/029712A1 |
The apparatus (10) for delivering grease through the individual string (12) includes a tubular member (14) for holding a supply of grease, a piston (16) sealing slidable through the tubular member (14) and a first valve (18) coupled to a...
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WO/1999/064715A1 |
A device for performing milling operations in an underground borehole comprises a toppling head (2) which is pivotably secured to a stator housing (1) and which is equipped with one or more rotatable mills (3, 4) which are in use pivoted...
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WO/1999/036664A1 |
A method of forming a seal in a downhole pipe comprising positioning a dump bailer containing a predetermined amount of a cement slurry at a desired location in a pipe disposed downhole in an earth borehole, displacing the cement slurry ...
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WO/1999/034093A1 |
The invention relates to a method and to a tool for treating at least one wall in a critical zone of a borehole, in particular a borehole for development of a hydrocarbon, water, gas or analogous field, the method consisting in reinforci...
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WO/1999/022112A1 |
A downhole cutting separator is disclosed. The separator can be mounted anywhere on the drillstring. The separator employs a seal (35) which directs the normally circulating fluid during the cutting or milling operation in through an int...
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WO/1999/005386A2 |
An apparatus (10) for removing debris (D) from an oil and gas well is operable with fluid pressure that reciprocates a valving member (20) between upper and lower positions. The valving member (20) seals against a piston (30) in a lowerm...
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WO/1997/017526A2 |
An assembly (10) for installing expandable tubing in a bore comprises: a length of tubing (14) including an expandable portion and an anchor (24) for releasably fixing the tubing in the bore; and a mandrel (12) for connection to a runnin...
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WO/1996/021794A1 |
A method for injecting fluid, such as an accelerator, into a wellbore comprises storing the fluid in a reservoir, locating the reservoir downhole in the wellbore, and then transferring the fluid from the reservoir into the wellbore. More...
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WO/1996/006262A1 |
An excavator for vertical bores is characterized in that it has a first head (24) which is provided at a lower end portion of a cylindrical body (12) with a cutter head (16) supported rotatably around the axis (14) thereof, and which has...
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WO/1996/004521A2 |
An apparatus and method for perforating and fracturing subterranean formations to enhance fluid production. At least one unlined punch charge is loaded into at least one punch charge carrier (26), and the void spaces in the punch charge ...
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WO/1995/033121A1 |
Injector (1) for injecting a traceable material into an oil and/or gas reservoir, the injector being lowered down in a bore hole that is in communication with the reservoir, followed by activating an electro-hydraulic system to inject a ...
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WO/1994/024841A1 |
A post hole digger (200) having a bracket plate (212), a first shaft assembly (214) and a second shaft assembly (216), each shaft assembly with a first end and a second end. The first ends of the shaft assemblies (214, 216) are connected...
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