Patent application number | Description | Published |
20110100643 | DOWNHOLE SUB WITH HYDRAULICALLY ACTUABLE SLEEVE VALVE - A method for opening a port through the wall of a ported sub including: providing a sub with a port through its tubular side wall; providing a hydraulically actuable valve to cover the port, the valve being actuable to move away from a position covering the port to thereby open the port; increasing pressure within the sub to create a pressure differential across the valve to move the valve toward the low pressure side, while the port remains closed by the valve; thereafter, reducing pressure within the sub to reduce the pressure differential; and driving the valve to move it away from a position covering the port. | 05-05-2011 |
20110155465 | Retractable Underreamer - An underreamer is provided in which the cutting elements are retracted into the tool body during run in, extensible for the performance of cutting operations, and retractable into the body of the tool afterwards. | 06-30-2011 |
20110278017 | SLIDING SLEEVE SUB AND METHOD AND APPARATUS FOR WELLBORE FLUID TREATMENT - A tubing string assembly is disclosed for fluid treatment of a wellbore The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off The tubing string can also be used where a ported tubing string is required to be run-m in a pressure tight condition and later is needed to be in an open-port condition A sliding sleeve in a tubular has a driver selected to be acted upon by an inner bore conveyed actuating device, the driver drives the generation of a ball stop on the sleeve. | 11-17-2011 |
20120118577 | WELLBORE CLEANOUT TOOL - A well tool ( | 05-17-2012 |
20130087323 | Multi-function Surge Reduction Apparatus - A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment. | 04-11-2013 |
20130319678 | Multi-function surge reduction apparatus - A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment. | 12-05-2013 |
20140008055 | Multi-function Surge Reduction Apparatus - A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment. | 01-09-2014 |
20140246208 | DOWNHOLE SUB WITH HYDRAULICALLY ACTUABLE SLEEVE VALVE - A method for opening a port through the wall of a ported sub including: providing a sub with a port through its tubular side wall; providing a hydraulically actuable valve to cover the port, the valve being actuable to move away from a position covering the port to thereby open the port; increasing pressure within the sub to create a pressure differential across the valve to move the valve toward the low pressure side, while the port remains closed by the valve; thereafter, reducing pressure within the sub to reduce the pressure differential; and driving the valve to move it away from a position covering the port. | 09-04-2014 |