Methods of swabbing liquid loaded wells, and killing wells, with the use of compression pumps, regulators and filtration techniques
AssigneeZenrg Services, LLC
InventorsRonald Williams, Sam Edwards, Joe Chandler, Cameron Brasier
Life of this patent
Estimating the term…
Abstract
A method to unload a fluid mixture from an underground production tubing, in order to reduce the hydrostatic pressure within the fluid mixture. A method to kill an oil or gas well by equalizing pressure between the production tubing, the casing annulus, and a surface tank battery, by de-pressurizing the fluid within the production tubing and the casing annulus, and by pumping a kill fluid. One goal of the methods may be to avoid discharging unwanted liquid phase or gas phase to the atmosphere, therefore reducing unnecessary emissions, and valuing the recovered products.
Claims16
A method to unload a fluid mixture from an underground production tubing, in order to reduce the hydrostatic pressure present within the fluid mixture, the method comprising:
- pulling the fluid mixture towards multiple surface equipment's,
- whereby the fluid mixture contains a gas phase and a liquid phase;
- whereby the multiple surface equipment's include a separation vessel, a compression pump and a tank battery,
- whereby pulling the fluid mixture from the underground production tubing allows reducing the hydrostatic pressure present within the fluid mixture inside the underground production tubing,
- flowing the fluid mixture towards the tank battery, passing through the separation vessel, whereby the fluid mixture is conveyed by the compression pump.
A method to kill an oil or gas well, whereby the oil or gas well includes a fluid mixture present within an underground production tubing and present within an underground casing annulus, the method comprising:
- equalizing the fluid pressure of the fluid mixture present within the underground production tubing and present within the underground casing annulus, with the fluid pressure of a fluid mixture present within a surface tank battery,
- wherein the oil or gas well includes a well head at surface,
- wherein the surface tank battery is connected to the well head,
- wherein the well head includes fluid valve connections linking the underground production tubing, the underground casing annulus and the surface tank battery,
- whereby equalizing the fluid pressure includes adjusting the position of the fluid valve connections;
- drawdowning the fluid mixture within the oil and gas well, by firstly pumping the fluid present within the underground production tubing and secondly pumping the fluid present within the underground casing annulus,
- whereby the fluid drawdown is achieved by a cross-compression pump, towards the surface tank battery;
- pumping a kill fluid from surface, firstly towards the underground casing annulus, and secondly towards the underground production tubing, using the cross-compression pump.
Dependencies are inferred from the claim text.