Patent application number | Description | Published |
20110186303 | Control System for a Surface Controlled Subsurface Safety Valve - Surface controlled subsurface control valves for use in wells and methods of controlling the same. In one embodiment, a valve includes a valve body, a bore closure assembly, a mechanical linkage, a drive assembly, and a control assembly. The valve body defines a bore for fluid to flow through when the bore closure assembly is in an open position. When the bore closure assembly is in its closed position, the bore closure assembly prevents fluid from flowing through the bore. The mechanical linkage is operatively connected to the bore closure assembly and to the drive assembly. The primary control assembly determines a force to apply to the mechanical linkage based on a present operating condition of the valve and causes the drive assembly to apply the determined force to the mechanical linkage. As a result, the mechanical linkage drives the bore closure assembly. | 08-04-2011 |
20130175025 | INTEGRATED OPENING SUBSYSTEM FOR WELL CLOSURE SYSTEM - Certain aspects and embodiments of the present invention are directed to a subsurface safety valve that can be disposed in a wellbore that is through a fluid-producing formation. The subsurface safety valve can include a closure mechanism, a sleeve, and a control line. The closure mechanism can be positioned in a passageway defined by a tubing string. The closure mechanism can be configured to prevent a flow of fluid to a portion of the passageway that is closer to a surface of the wellbore than the closure mechanism. The sleeve can be positioned in the passageway adjacent to the closure mechanism. The control line can communicate pressure to a piston from a pressure source within an inner diameter of the tubing string, causing the piston to apply a force to the sleeve. The sleeve can open the closure mechanism in response to the force being applied to the sleeve. | 07-11-2013 |
20130175042 | SUBSURFACE SAFETY VALVE DEPLOYABLE VIA ELECTRIC SUBMERSIBLE PUMP - Certain aspects and embodiments of the present invention are directed to a subsurface safety valve disposed in a wellbore through a fluid-producing formation. The subsurface safety valve can include a closure mechanism. In some embodiments, the subsurface safety valve can be coupled with an electric submersible pump. The subsurface safety valve coupled to the electric submersible pump can be positioned in a passageway defined by a tubing string via a power cable coupled to the electric submersible pump. In some embodiments, the subsurface safety valve can include at least one terminal. The at least one terminal can form an electrical connection between the subsurface safety valve and the electric submersible pump. The subsurface safety valve can receive power from the electric submersible pump via the electrical connection. | 07-11-2013 |
20130264069 | PUMP-THROUGH FLUID LOSS CONTROL DEVICE - Presented are apparatus and methods for pump-through fluid loss control. In one embodiment, the fluid loss control device is positioned in a wellbore having a first and a second one-way valve therein. The first one-way valve is openable in response to a first, selected differential pressure acting upward across the first one-way valve. For example, fluid pumped from an ESP from below the device acts to open the first one-way valve. Fluid is flowed upward through the device through the first one-way valve while the second one-way valve is closed. The first one-way valve is closed by reducing the first differential pressure across the first one-way valve, for example, by turning off the ESP. The second one-way valve is opened in response to a second, selected differential pressure acting downward across the valve. Fluid is flowed downward through the second one-way valve while the first one-way valve is closed. | 10-10-2013 |
20150247377 | Downhole Power Delivery Tool Powered by Hydrostatic Pressure - Certain aspects are directed to downhole power delivery tools using hydrostatic pressure within the wellbore. In one aspect, a downhole power delivery tool is provided that can be disposed in a wellbore through a fluid-producing formation. The downhole power delivery tool includes a body defining an inlet proximate to a chamber in the body, an actuation mechanism in the body and adjacent to the inlet, and a piston proximate to the chamber. The actuation mechanism can allow communication of hydrostatic pressure via the inlet to the chamber from an annulus external to the body in response to an actuation force being applied to the actuation mechanism. The hydrostatic pressure communicated to the chamber applies a first force to the piston. The piston applies a second force to a rod movable relative to the body in response to the first force being applied to the piston. | 09-03-2015 |