Patent application number | Description | Published |
20090084552 | PROVIDING DYNAMIC TRANSIENT PRESSURE CONDITIONS TO IMPROVE PERFORATION CHARACTERISTICS - A transient overbalance condition is created in a wellbore interval such that a pressure of the wellbore interval is greater than a reservoir pressure in surrounding formation. Creating the transient overbalance condition causes a near-wellbore region of the formation to increase in pressure. The pressure in the wellbore interval is reduced at a rate that produces a relative underbalance condition in which the pressure in the wellbore interval is less than the pressure of the near-wellbore region of the formation, but the pressure in the wellbore interval is greater than the reservoir pressure. | 04-02-2009 |
20090133875 | GRAVEL PACKING APPARATUS UTILIZING DIVERTER VALVES - Method and apparatus for gravel packing an open-hole wellbore are disclosed. The apparatus includes a sandscreen disposed in the wellbore thereby creating an annulus between the wellbore and the sandscreen for receiving a gravel slurry. The apparatus further comprises a tubular member or wash pipe which is concentrically disposed in the sandscreen for receiving carrier fluid which passes through the sandscreen and for returning the carrier fluid to the earth's surface. At least one diverter valve is installed in the tubular member for permitting flow of the carrier fluid into the tubular member. | 05-28-2009 |
20110067863 | SLURRY BYPASS SYSTEM FOR IMPROVED GRAVEL PACKING - Apparatus and methods for gravel packing. The method is particularly useful for deploying a sand screen assembly having shunt tubes. The apparatus can include two or more tubulars disposed about at least one expandable member. The tubulars are longitudinally aligned with one another and bundled together in a run-in position, and the bundled tubulars radially expand when the expandable member is activated. | 03-24-2011 |
20110139465 | PACKING TUBE ISOLATION DEVICE - A packing tube isolation assembly, which includes a first conduit, a second conduit, and a sealing member. The first conduit extends substantially parallel to a longitudinal axis of a tube disposable in a wellbore and has an opening defined in the first conduit. The second conduit fluidly connects to an annulus of the wellbore and to the opening of the first conduit, and is disposed at an angle with respect to the first conduit. The sealing member is disposed adjacent the second conduit and is configured to move into and substantially obstruct the second conduit when the second conduit is at least partially packed with a gravel slurry. | 06-16-2011 |
20110203793 | METHOD OF GRAVEL PACKING MULTIPLE ZONES WITH ISOLATION - A gravel pack system and method for zonal isolation is disclosed by using a swellable element in conjunction with a primary isolation device, such as a cup packer. The zones may be isolated by both the isolation device and the swellable element. Shunt tubes may be used to convey a gravel slurry to each zone. At least one upper shunt tube extends through the isolation device to provide the slurry to the zone therebelow. Once the gravel packing is completed, the swellable member may be activated to provide and supplement a hydraulic seal between adjacent zones. | 08-25-2011 |
20110253375 | APPARATUS AND METHODS FOR REMOVING MERCURY FROM FORMATION EFFLUENTS - An apparatus and related methods for removing hazardous trace elements from hydrocarbon reservoir effluent is implemented by placing an adsorbing volume of material designed to adsorb the hazardous trace elements into the vicinity of a producing formation face at a downhole location; and letting the reservoir effluent flow through the volume of adsorbing material | 10-20-2011 |