Mixing device for mixing air and water in a water purifier
AssigneeAnlager Svenska AB
InventorKurt Andersson
Life of this patent
Estimating the term…
Abstract
A completion suspension valve system is described which allows a well to be suspended and desuspended remotely without a dual bore riser to the surface. This is achieved by incorporating a remotely actuatable valve into the production bore of a tubing hanger. The valve is hydraulically operable and may be controlled via the tubing hanger running tool or via the xmas tree. The valve can be closed and tested after the tubing hanger has been installed, thereby isolating the well. The dual bore riser and running tool are retrievable and the MODU type vessel is then free to continue drilling and completion operations elsewhere. The xmas tree can therefore be deployed from a workclass supply boat instead of a MODU type vessel.
Claims47
A completion suspension valve system comprising:
- a suspension valve housing, said valve housing having a production bore;
- a valve element disposed in said suspension valve housing;
- said valve being remotely actuatable between an open position and a closed position.
A system as claimed in claim 8 wherein the actuation means comprising at least two moveable guide shafts disposed substantially parallel to the production bore, at least two actuation bars coupled between the respective guide shafts and to the apertured ball element, the actuation bars being coupled to the guide shafts by rotatable pin joints, and being slidingly located in respective bar pockets of said ball element.
A method of remotely suspending and desuspending a well comprising the steps of:
- providing a dual bore tubing hanger having a production bore and an annulus bore,
- disposing a remotely operable valve in said production bore, and
- actuating the valve remotely between an open and a closed position.
A ball element for use in a completion suspension valve said ball element having a throughbore and a pair of trunnions to permit the ball to be rotated in a production bore between an open and a closed position, said throughbore being offset from the centre of the ball to create a relatively thicker portion and a relatively thinner portion on opposite sides of the throughbore, and one or more pockets disposed on either side of said throughbore adjacent said trunnions for receiving slidable bars for rotating said ball element on said trunnions.
A ball valve actuating mechanism for moving an apertured ball valve between an open and a closed position, said mechanism having a pair of rectilinear moveable actuated rods, each rod being coupled by a rotatable pin joint to an actuation bar and each actuation bar being slideably received in a pocket in said apertured ball value, the pin joints being constrained to moved rectilinearly with said guide shafts and actuation bars move relative to the ball as it rotates between a closed and open position.
A method of opening a closed ball valve and retaining the ball valve in an open position, said method comprising the steps of,
- running a hydraulic piston with a mandrel at its leading end into a completion suspension valve housing;
- engaging the mandrel with an override nipple;
- forcing the override nipple to a locked position and simultaneously opening the valve,
- retaining the nipple locked to the valve housing which also locks the valve in the open position.
A completion system valve override system comprising,
- a xmas tree for coupling to a wellhead;
- a lower riser safety package coupled to said xmas tree;
- a hydraulic piston and mandrel override tool, coupled to said riser safety package;
- said piston being a sufficient length to pass through said safety package, xmas tree, tubing hanger and enter said completion suspension valve housing for engaging with a valve override mechanism, said mechanism being hydraulically actuatable to move the valve to an open position and lock the valve in the open position.
A tubing hanger having an offset aperture ball valve for use with an in-line tree.
A ball valve actuating mechanism for moving an apertured ball valve between an open and a closed position, said mechanism having a single rectilinear moveable actuation rod, said rod being coupled to a yoke having two free ends to which are coupled by a rotatable pin joint at least one actuation bar, said at least one actuation bar being slideably received in a pocket in said apertured ball valve, the pin joints being constrained to move rectilinearly within said guide shaft and the ball moves relative to the actuation bars as it rotates between an open and a closed position.
A method of opening a closed ball valve and retaining the ball open in an open position, said method comprising the steps of,
- passing a sealing override plug through an annulus bore to engage with the top of a ball element actuation rod,
- pressuring the annulus bore to force the override plug and the actuation rod to a position where the ball element is in a fully open position, and further actuating the override plug to lock the plug to the annulus bore to retain the ball element in a locked fully open position.
A completion valve system comprising:
- a valve housing, said valve housing having a production bore and an annulus bore;
- a production bore valve element disposed in said valve housing and an annulus bore valve element disposed in said suspension valve housing;
- said valves being remotely actuatable in said housing between an open position and a closed position.
A completion valve system comprising:
- a valve housing, said valve housing having a production bore and an annulus bore;
- a production bore valve element disposed in said production bore and an annulus bore valve element disposed in said annulus bore,
- single actuator means moveable within said housing for actuating the production valve element and the annulus valve element to move between a close and an open position,
- and said actuator means being remotely operable to move said valves between said open and closed positions.
A system as claim in claimed 40 wherein said valve system is a suspension valve system.
A completion suspension valve system comprising:
- a suspension valve housing, said housing having a valve bore;
- a flapper valve element disposed in said housing and being moveable between a first position where the bore is clear and a second position where said bore is occluded;
- upper piston means having a throughbore and being moveable between a lower position and an upper position, said upper piston means maintaining the flapper valve in said first position when in said lower position and permitting the flapper valve to move to said second position when in said upper position;
- lower piston means having a throughbore and being moveable between a lower position and an upper position for engaging with said flapper valve when said flapper valve is in said second position occluding said valve bore, the arrangement being such that
- when said first piston is moved to said upper position said flapper valve element is urged to occlude said bore and said lower piston is moved to said upper position to engage an underside of said flapper valve whereby said flapper valve element is capable of containing differential pressure from below and above said valve element.
A completion suspension valve system comprising a valve housing having a throughbore and a flapper valve element disposed within said valve housing between a first position wherein said throughbore is open and a second position wherein said throughbore is closed and locking means for locking said flapper valve element in said closed position whereby said flapper element is capable of containing differential pressure from below and above said flapper valve element.
Dependencies are inferred from the claim text.