Patent application number | Description | Published |
20080264636 | Method and apparatus for hydraulic treatment of a wellbore - A method and apparatus for applying hydraulic treatment and diversion treatment to a wellbore are described. The method involves isolating a wellbore segment using hydraulic seals; applying fluid treatment and perforation diverters within the isolated segment; and scraping a portion of the wellbore after termination of treatment to remove any lodged perforation diverters from the wellbore. A collection chamber may also be provided for collecting used diverters for return to surface following treatment. In one embodiment, diverters used and collected within a first segment may be reused during treatment of a successive wellbore segment. | 10-30-2008 |
20140096888 | ROLLED TUBULAR CENTRALIZER - A method of forming a centralizer where a flat plate is created into a tubular where the flat plate is typically rolled so that two sides of the plate contact one another and are then linked, typically by welding. Openings are then created in the tubular such that there are no corners or other points that stress cracks may originate. Once the openings are created the remaining material between adjacent openings forms ribs. The openings created in the tubular are generally aligned with the long axis of the tubular. The material at the upper and lower end of the flat plate where openings were not created serve as circumferential collars. The ribs may be radially outwardly expanded in order to provide adequate stand-off. In many instances the ribs will also be hardened by heat treating or other hardening processes. | 04-10-2014 |
20140251595 | ROLLED TUBULAR CENTRALIZER - A method of forming a centralizer where a flat plate is created into a tubular where the flat plate is typically rolled so that two sides of the plate contact one another and are then linked, typically by welding. Openings are then created in the tubular such that there are no corners or other points that stress cracks may originate. Once the openings are created the remaining material between adjacent openings forms ribs. The openings created in the tubular are generally aligned with the long axis of the tubular. The material at the upper and lower end of the flat plate where openings were not created serve as circumferential collars. The ribs may be radially outwardly expanded in order to provide adequate stand-off. In many instances the ribs will also be hardened by heat treating or other hardening processes. | 09-11-2014 |
20140352980 | WRAP-AROUND BAND AND SLEEVE ATTACHMENT APPARATUS FOR AN OILFIELD TUBULAR - An attachment apparatus for attaching to a tubular. The apparatus may include a flexible member extending circumferentially around the tubular more than once. A tension force on the flexible member may cause the flexible member to apply a first radially-inward gripping force on the tubular. An annular sleeve may be positioned radially-outward from the flexible member. The sleeve may apply a second radially-inward gripping force on the flexible member and the tubular. | 12-04-2014 |
20150047855 | MULTI-VANE CENTRALIZER AND METHOD OF FORMING - A centralizer for centralizing a tubular in a wellbore, and a method of manufacturing a centralizer. The centralizer may include a plurality of ribs spaced circumferentially apart from one another around the tubular. Each of the ribs may include a first end section, a second end section, and a middle section extending between the first and second end sections. A first plurality of spacers may be spaced circumferentially apart from one another around the tubular. Each of the first plurality of spacers may be positioned circumferentially between two of the plurality of ribs. The first plurality of spacers and the first end sections of the plurality of ribs may be axially aligned and together at least partially define a first end collar. | 02-19-2015 |
20150047856 | WRAP-AROUND STOP COLLAR AND METHOD OF FORMING - A stop collar for a tubular and method for installing a stop collar on a tubular. The stop collar includes a flexible member extending circumferentially around the tubular more than once. A tension force on the flexible member causes the flexible member to apply a radially-inward gripping force on the tubular. The stop collar may also include a shield disposed around at least a portion of the flexible member, to protect the flexible member in a downhole environment. The stop collar may also or instead include an adhesive disposed radially between the flexible member and the tubular. | 02-19-2015 |
20150047907 | WRAP-AROUND BAND TOOL CONNECTOR AND METHOD OF FORMING - A downhole tool including a body configured to be positioned on an outer surface of a tubular. A flexible member may extend circumferentially around the body more than once. The body may be positioned radially-between the outer surface of the tubular and the flexible member, and a tension force on the flexible member may cause the flexible member to apply a radially-inward gripping force on the body and the tubular. | 02-19-2015 |
20150101798 | CENTRALIZER PRECONDITIONING AND TESTING APPARATUS AND METHOD - Apparatus, methods, and systems for preconditioning and/or testing a centralizer, and a preconditioned centralizer, are provided. The apparatus includes a restrictor positionable around a tubular and having an inner diameter that is greater than an outer diameter of the tubular. The apparatus also includes a driver configured to translate the restrictor relative to the tubular in at least a first axial direction. The restrictor is configured to engage a centralizer attached to the tubular, and the restrictor is configured to at least partially collapse flexible ribs of the centralizer when the driver axially translates the restrictor across at least a portion of the flexible ribs. | 04-16-2015 |