Patent application number | Description | Published |
20100132960 | DRILLABLE BRIDGE PLUG FOR HIGH PRESSURE AND HIGH TEMPERATURE ENVIRONMENTS - A drillable bridge plug includes a mandrel having external splines disposed on an outer surface of the mandrel, a sealing element disposed around the mandrel, an upper cone disposed around the mandrel proximate an upper end of the sealing element, and a lower cone disposed around the mandrel proximate the lower end of the sealing element, wherein an inner surface of the lower cone comprises internal splines configured to engage the external splines. The drillable bridge plug also includes an upper and a lower slip assembly disposed around the mandrel, and an upper and lower ring assembly each including a first segmented barrier ring, a second segmented barrier ring, and a back-up ring disposed proximate sealing element. A method of setting the drillable bridge plug and a method of removing the drillable bridge plug are disclosed. | 06-03-2010 |
20100326650 | DRILLABLE BRIDGE PLUG - A downhole tool for isolating zones in a well, the tool including a mandrel, a sealing element disposed around the mandrel, an upper cone disposed around the mandrel proximate an upper end of the sealing element, an upper slip assembly disposed around the mandrel adjacent a sloped surface of the upper cone, a lower cone disposed around the mandrel proximate a lower end of the sealing element, a lower slip assembly disposed around the mandrel adjacent a sloped surface of the lower cone, two element end rings, a first element end ring disposed adjacent the upper end of the sealing element and a second element end ring disposed adjacent the lower end of the sealing element, and two element barrier assemblies, each assembly disposed adjacent one of the two element end rings is disclosed. | 12-30-2010 |
20110259610 | HIGH PRESSURE AND HIGH TEMPERATURE BALL SEAT - An isolation device for a frac plug, the isolation device including a ball seat having a seating surface and a ball configured to contact the seating surface, wherein a profile of the seating surface corresponds to a profile of the ball. A frac plug including a mandrel having an upper end and a lower end, a sealing element disposed around the mandrel, and a ball seat disposed within a central bore of the mandrel, wherein the ball seat includes a seating surface having a non-linear profile. A method of isolating zones of a production formation, the method including setting a frac plug between a first zone and a second zone, disposing a ball within the frac plug, and seating a ball in a ball seat of the frac plug, the ball seat including a seating surface having a profile that substantially corresponds to the profile of the ball. | 10-27-2011 |
20120006562 | METHOD AND APPARATUS FOR A WELL EMPLOYING THE USE OF AN ACTIVATION BALL - A system includes a tubular string and a hollow ball. The tubular string is adapted to be deployed downhole in a well and includes a seat. An activation ball adapted to be deployed in the well to lodge in the seat. The ball includes an outer shell that forms a spherical surface. The outer shell forms an enclosed volume therein, and the outer shell is formed from a metallic material. | 01-12-2012 |
20120217025 | METAL EXPANDABLE ELEMENT BACK-UP RING FOR HIGH PRESSURE/HIGH TEMPERATURE PACKER - An expandable backup ring includes an outer surface, an inner surface having a plurality of protrusions projecting radially inwardly, and a plurality of segments, the segments defined by a plurality of outer surface cuts. The plurality of outer surface cuts extends radially inwardly from the outer surface and partially into each of the plurality of protrusions. | 08-30-2012 |
20140174728 | METHOD AND APPARATUS FOR A WELL EMPLOYING THE USE OF AN ACTIVATION BALL - A system includes a tubular string and a hollow ball. The tubular string is adapted to be deployed downhole in a well and includes a seat. An activation ball adapted to be deployed in the well to lodge in the seat. The ball includes an outer shell that forms a spherical surface. The outer shell forms an enclosed volume therein, and the outer shell is formed from a metallic material. | 06-26-2014 |
20160032684 | Downhole Tool With Counting Mechanism - An object counting mechanism for a downhole tool which includes a tool housing having a central passage and a seat configured to selectively catch an object passing through the central passage. An activating mechanism is configured to move the seat from a first state allowing the object to pass through the seat into a second state for catching the object on the seat. A rotating sleeve causes the activating mechanism to move the seat into the second state after a given degree of rotation of the rotating sleeve. At least one contact surface is spaced apart from the seat and positioned to engage the object passing through the central passage, thereby effecting a limited rotation of the rotating sleeve at each passage of an object. | 02-04-2016 |