Abstract:
Some examples of the present disclosure relate to a method for washing an annulus that at least partially surrounds a casing in a well. The method comprises locating a tool inside a wellbore casing, and flowing a washing fluid from an injection aperture on the tool and into the annulus via a first casing aperture in the casing. An inflow region of the casing is created having a reduced pressure relative to the annulus, and the method involves flowing the washing fluid from the annulus and into the inflow region of the casing through a second casing aperture in the casing.
Abstract:
A high power laser system for providing laser beams in various laser beam patterns along a laser beam path that is positioned to provide for the in situ laser processing of materials in tubulars, such as pipes in a hydrocarbon producing well. Laser treating for providing flow assurance by direct and indirect laser processing of materials interfering with flow.
Abstract:
The invention relates to an assembly to be run with a well tubular having openings provided in the wall and for being arranged in a well bore and thereby forming a space between said tubing and the well bore surface. The assembly comprising: first fluid control means and second fluid control means being provided in another opening in said well tubular. The assembly further having a set of packers for sealing of the space between said tubing and the well bore surface, said set of packers being positioned such that a part the tubular having both first and second fluid control means is located between the set of packers. The first fluid control means is adapted such that it is capable of blocking fluid flow from the interior of said well tubular to said space between said tubing and the well bore surface. The second fluid control means is adapted such that it is capable of blocking fluid flow from said space between said tubing and the well bore surface to the interior of said well tubular.
Abstract:
Die Erfindung betrifft eine Vorrichtung (1) zur Aktivierung oder Reinigung von Filterrohrbrunnen mit einem Filterrohr (16), und umfasst einen ersten und einen zweiten Volumenkörper (12, 14), die mit ihrem Außendurchmesser im Wesentlichen an den Innendurchmesser des Filterrohrs (16) angepasst und an ihrer Außenumfangsfläche radial bezüglich der Brunnenlängsachse (11) flexibel ausgebildet sind, so dass eine Dichtwirkung zwischen den Außenumfangsflächen der jeweiligen Volumenkörper (12, 14) und der Innenwandung des Filterrohrs (16) besteht. Zwischen dem ersten und dem zweiten Volumenkörper (12, 14) und der Innenwandung des Filterrohrs (16) ist eine Entnahmekammer (30) gebildet, die mit einer Pumpeinrichtung (38) hydraulisch verbindbar ist. Es ist zumindest ein Ausgleichsrohr (20) vorgesehen, das die Entnahmekammer (30) in Längsrichtung (11) der Vorrichtung vollständig durchsetzt, so dass eine hydraulische Verbindung zwischen den Bereichen gegeben ist, die jeweils an die zur Entnahmekammer (30) entgegengesetzten äußeren Stirnseiten der beiden Volumenkörper angrenzen.
Abstract:
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 cleaning/removal of asphaltine and/or paraffin and scale. This method can be used alone or with the assistance of a wash tool which is a combination pressure and surge wash tool having a nipple assembly. A by-pass port is coupled to the nipple assembly and a diverter cup is coupled to the by-pass port. A plurality of pressure wash cups are positioned on the tool. A pressure wash port is located between the plurality of pressure wash cups and a pump shoe assembly is coupled to a bottom pressure wash cup.
Abstract:
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 fluid, and introducing a consolidating agent through the well bore and into the portion of the subterranean formation. Methods of cleaning a sand control screen comprises introducing a cleanup fluid through a sand control screen and into a portion of a subterranean formation, the sand control screen located in a well bore that penetrates the subterranean formation; applying a pressure pulse to the cleanup fluid; and introducing a consolidating agent through the sand control screen and into the portion of the subterranean formation.
Abstract:
Method and apparatus are provided for pumping operations that may be used to form perforations in the casing of a well, clean perforations and drill drain holes through perforations. A plunger is placed in a reference perforation and the pumping operations may be performed through a nozzle at a known location with respect to the reference perforation. The nozzle may be attached to a flexible hose to drill a drain hole or may be inserted in a body on the bottom of a tubing string. Addition apparatus and method are provided to insure that the plunger or plungers are maintained in a reference perforation or perforations when pumping operations are carried out through tubing.
Abstract:
A system and method for determining blockage in a wellbore containing fluid and/or in a formation adjacent the wellbore, according to which acoustic/seismic energy is generated in the fluid by a pulse generator (34, 54, 76) and variables associated with the energy are measured by near-field hydrophones (36a) and far-field hydrophones (36b, 36c). A processor (38) correlates differences in the measured components to the variations of permeability in the screen (26) or gravel pack (28).
Abstract:
Die Erfindung betrifft einen Brunnen (1) zur Gewinnung, Beobachtung und/oder Absenkung von Grundwasser, mit einem wenigstens einen Filterrohrbereich (3) aufweisenden Standrohr (2), mit wenigstens einer im Standrohr (3) angeordneten Pumpe (6), um einen Brunnen zur Verfügung zu stellen, der einfach und kostengünstig regeneriert werden kann, ist erfindungsgemäss vorgesehen, dass dem Filterrohrbereich (3) eine Bedüsungseinrichtung (9) zur Bedüsung des Filterrohrbereichs (3) und/oder des dem Filterrohrbereich (3) benachbarten Brunnenbereichs zugeordnet ist und dass die Bedüsungseinrichtung (9) mit wenigstens einer Druckleitung (10) zur Versorgung der Bedüsungseinrichtung (10) mit einem zu verdösenden Medium verbunden ist.
Abstract:
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 of the pipe. The method does not require a large-scale facility or operating process, making it possible to wash the inner wall surface of the pipe reliably and very sanitarily in a short time and to check the pipe for water leakage. A method of washing well pipes comprising the step of intermittently or continuously driving compressed air into a well pipe and, simultaneously therewith, spouting high pressure water to wash the interior of the well pipe. When this method is used, the synergistic effect of compressed air and high pressure water reduces the operating time and process, thus making it possible to wash the interior of the well pipe easily and efficiently in a short time.