| Patent application number | Description | Published |
|---|
| 20090159290 | Controller for a Hydraulically Operated Downhole Tool - A hydraulic control system can be used on a downhole choke and has the feature of moving a travel stop for a sliding sleeve using discrete j-slot mechanisms for selectively moving the stop in either one of two opposed directions. The valve can be incrementally opened further with pressure cycling on an opening chamber. The valve can be immediately put to the closed position with pressure on a closing chamber. After closing, the valve can assume its former open position or other selected less open positions by reconfiguring the travel stop while the valve stays in the closed position In order to achieve a higher open percent after closing, one or more pressure cycles must be applied to the open chamber after the valve is reopened to the position it was in before it was closed. | 06-25-2009 |
| 20120132414 | Automatic Bypass for ESP Pump Suction Deployed in a PBR in Tubing - A subterranean pump is delivered on coiled tubing with power and control cables running inside. The pump suction has a tubular inlet that seals in a polished bore in the surrounding tubular. A diverter opens a lateral port and closes entry to the pump suction when the pump is not running and the formation pressure is high enough to bring production to the surface. This configuration prevents the pump from turning while the formation pressure allows production to the surface. If the pump is started it reduces pressure ahead of a movable plug to draw it toward the pump against a spring bias. The lateral ports close and an inline flow path opens to allow the pump to draw through the diverter and discharge into the annular space around the coiled tubing on the way to the surface. | 05-31-2012 |
| 20120255738 | MULTI-BARRIER SYSTEM AND METHOD - A multi-barrier system includes a first valve and a second valve that are both in fluidic communication with a lower completion. The first valve and the second valve are positioned proximate an uphole extent of the lower completion, and a member in operable communication with the first valve and the second valve. The system is configured such that both the first valve and the second valve are open when the member is in a first position, the first valve is closed and the second valve is open when the member in a second position, the first valve is open and the second valve is closed when the member is in a third position, and the first valve and the second valve are both closed when the member is in a fourth position. The first valve and the second valve are closable in response to retrieval of an upper completion. | 10-11-2012 |
| 20130068472 | Hydraulic Three Position Stroker Tool - A stroker tool operates a subterranean tool between three operating positions. The stroker tool includes an outer housing defining a piston chamber within. A piston assembly having first and second piston members is moveable within the piston chamber between a first position, a second position, and a third position. A shifting member is operably connected with the piston assembly and is moved to an uppermost axial position when the piston assembly is in the first position, an intermediate axial position when the piston assembly is in the second position, and a lowermost axial position when the piston assembly is in the third position. | 03-21-2013 |
| 20130153203 | Subterranean Tool with Shock Absorbing Shear Release - A subterranean tool can be actuated with one or more control lines for a hydraulic release. It can further be actuated with a shear release after a lockout feature for the shear release is defeated. The shear release features a lock that limits relative movement so that a shear member can be defeated but without a release. A dog limits relative movement in a wider groove where dog movement in the groove allows a shock absorbing feature to act to cushion the release as the shear member breaks. The relative movement is reversed to let a retaining ring drop out of the way into a groove that comes into alignment with it. The relative movement is reversed again to pull a sleeve out from under gripping collets that have previously failed to release and the tool releases from that point on the same way as the control line actuated release. | 06-20-2013 |
| 20130153207 | Subterranean Tool with Multiple Release Capabilities - A subterranean tool can be actuated with one or more control lines for a hydraulic release. It can further be actuated with a shear release after a lockout feature for the shear release is defeated. The shear release features a lock that limits relative movement so that a shear member can be defeated but without a release. A dog limits relative movement in a wider groove where dog movement in the groove allows a shock absorbing feature to act to cushion the release as the shear member breaks. The relative movement is reversed to let a retaining ring drop out of the way into a groove that comes into alignment with it. The relative movement is reversed again to pull a sleeve out from under gripping collets that have previously failed to release and the tool releases from that point on the same way as the control line actuated release. | 06-20-2013 |
| 20130292137 | Adjustable Pressure Hydrostatic Setting Module - An adjustable pressure hydrostatic setting module includes a collapsible pressure chamber and a setting chamber. The pressure chamber is precharged at a fluid pressure that is greater than atmospheric pressure and greater than the fluid pressure within the setting chamber. In a described embodiment, the setting module also includes a frangible rupture member that closes off the setting chamber from annulus pressure. A regulator governs the transfer of fluid pressure from the collapsible chamber to the setting chamber. | 11-07-2013 |
| 20160053565 | Drive Off Method from Subsea Well with Pipe Retention Capability - This invention involves a method of securing pipe (also referred to as a “string of tools”) when driving off a subsea well or sealing off a well in onshore applications where there is an emergency by grabbing the pipe before it is cut. A pipe ram then is closed on the pipe before a shear ram is actuated to cut the pipe. In subsea applications, the top of the pipe may then be raised clear of the blowout preventer within a marine riser. A blind ram and annular preventer can then be closed above the remnant of the pipe being retained by the pipe catcher. The pipe above the cut is removed through the marine riser and the marine riser itself is then disconnected. The rig is then driven off the well. If the well is reactivated the steps are reversed but the well is safely secured before the blowout preventer components are opened. The pipe supported by the catcher is independently supported before the catcher is released and the pipe lifted through the riser. | 02-25-2016 |
