Patent application number | Description | Published |
20090001304 | System to Retrofit an Artificial Lift System in Wells and Methods of Use - Pump systems for installation in a wellbore and associated methods are disclosed. The pump system includes one or more internal safety valves that may include a closure mechanism, a biasing mechanism, and an actuator. | 01-01-2009 |
20100018700 | Laminate Pressure Containing Body for a Well Tool - Apparatus if provided for use in wells, particularly wells that have high-pressure and high-temperature conditions in the well. The shells of completion equipment that is required to withstand the rigorous conditions in such wells are increased in strength by laminate layers that are formed of materials having higher yield strength than the yield strength of materials that can be used in well fluids. | 01-28-2010 |
20100051847 | Method and Apparatus for Severing Conduits - Apparatus is provided for cutting a conduit passing through a valve as the valve is closed. The apparatus may be used in subsea well operations or as a safety valve in any well. A spherical outside surface on a cutter element seats in the apparatus. The cutter element cuts a conduit passing through the apparatus in one location and leaves free the severed pieces of the conduit. An actuator to rotate the cutter element may be driven by energy stored in springs or by hydraulic pressure. | 03-04-2010 |
20100327196 | Purging Mechanism for a Hemi-Wedge Valve - The present invention is directed to a technique of purging unwanted particles from the interior of a valve body. Inlet and outlet ports are formed in the valve housing to allow for circulation of the fluid within the valve body. The flow path of the fluid is isolated from the main fluid flow path when the valve is in the open or closed position. Additionally the pressure of the fluid is at a level higher than that of the main fluid flow. | 12-30-2010 |
20120085541 | Method and Apparatus for Hydraulically Fracturing Wells - A mobile plant for supplying hydraulic fracturing service to a well is provided. The plant is particularly useful for wells that require multi-stage fracturing treatments, where the surface equipment may not be moved for longer times than when supplying conventional treatments. Skid-mounted equipment is used, so that the transport vehicle for the equipment can be released after delivery of the equipment to a well site. A method for marketing and executing fracturing treatments is also provided, wherein a customer is provided price data for each item included in the total cost of a fracturing treatment, along with software for calculating the total cost of a treatment to be purchased. The customer may calculate the cost of a treatment from computer-readable storage or over the internet. The customer may also monitor the fracturing treatment remotely and obtain a post-treatment report. | 04-12-2012 |
20130081824 | TUBING RETRIEVABLE INJECTION VALVE ASSEMBLY - A method and apparatus for controlling the flow of fluid in an injection well includes a main valve assembly having a valve and a retrievable nozzle selective lock assembly (RNSLA). The RNSLA is operable when positioned within the valve body to open the valve when fluid is pumped into the well and closes the valve when fluid flow is terminated. The RNSLA includes a replaceable orifice nozzle so that orifices of different dimensions may be used in conjunction with the valve assembly. In an alternate embodiment, the RNSLA includes a variable output nozzle assembly to maintain the valve in a protected open position without chattering over a wide range of flow rates. | 04-04-2013 |
20130133883 | DUAL DOWNHOLE PRESSURE BARRIER WITH COMMUNICATION TO VERIFY - Apparatus and method are provided for placing a dual pressure barrier in a vertical or horizontal well and verifying by pressure sensors in the well that the pressure barriers are operable. Communication of data from the well may be by electromagnetic or acoustic signals, and the data may be acquired on a ship near the well. | 05-30-2013 |
20130199791 | DEEP SET SUBSURFACE SAFETY SYSTEM - A subsurface safety valve is operable to close a fluid flow path by virtue of an axially movable flow sleeve. The valve includes a recockable linear actuator and a latch mechanism so that the valve can be moved from an open to a closed position as a result of axial movement of the flow sleeve without overcoming the pressure head and frictional forces currently encountered in conventional safety valves. | 08-08-2013 |
20130220624 | WIRELINE RETRIEVABLE INJECTION VALVE ASSEMBLY WITH A VARIABLE ORIFICE - A wireline retrievable injection valve for an oil or gas well has an internal valve that is initially moved to open a flapper safety valve and also opens to allow fluid flow through the valve. The internal valve includes a sleeve that opens the flapper safety valve and shields the flapper safety valve from fluid. In this manner the flapper valve is protected from being caused to “flutter” or “chatter” due to pressure variations in the fluid flow, thereby damaging the seat. | 08-29-2013 |
20140020904 | Deep Set Subsurface Safety Valve with a Micro Piston Latching Mechanism - A subsurface safety valve is operable to close a fluid flow path by virtue of an axially movable flow sleeve. The valve includes a recockable actuator and a latch mechanism so that the valve can be moved to a closed position without overcoming the pressure head and frictional forces currently encountered in conventional safety valves. The latch mechanism includes one or more micro pistons. | 01-23-2014 |
20140034325 | Integral Multiple Stage Safety Valves - An integral multistage safety valve is designed to provide a second level of protection should a first stage fail. The valve may be used in oil and/or gas wells. The interior portion of the multiphase safety valve is designed so as to reduce turbulence and pressure loss through the valve when the valve is in an open position. The valves may be independently operable, or operable with a single control line. The multi-stage valve reduces the number of body joints required to construct two identical valves thereby reducing cost and potential leak paths and increasing reliability of the system. | 02-06-2014 |
20140251613 | Inflow Control Valve - A valve and valve assembly are provided to allow opening of flow channels through the wall of a tubular by increasing and then decreasing pressure in the tubular. Slidable seals having different areas are used to apply an axial force to a shuttle in the valve in response to differential pressure across the valve when in the closed position. The axial force shears a pin, releasing the shuttle. A decrease of pressure in the tubular can allow the valve to open in response to a spring force. Multiple valves may be placed along a tubular string and the valves may be opened all at substantially the same time or at time intervals determined by pressures applied inside the tubular. | 09-11-2014 |