Back to results
US 10,895,139 B2Granted
Frac manifold isolation tool
AssigneeOil States Energy Services, L.L.C.
InventorsRichard Brian Sizemore, Bob McGuire, Danny L. Artherholt, Nicholas Langston, Blake Mullins, Mickey Claxton
Life of this patent
Estimating the term…
Abstract
A frac manifold isolation tool configured to connect to a zipper spool, and comprising a mandrel that is axially movable and a hydraulic setting tool configured to move the mandrel from an open position, in which fracturing fluid is allowed to flow from a zipper spool to a connected frac tree, to a closed position, in which the mandrel and its associated cup tool prevent fracturing fluid from flowing to the connected frac tree.
Claims13
A method of operating a zipper manifold, comprising the steps of:
- installing on a zipper manifold two or more well configuration units, wherein one or more well configuration unit comprises:
- a bridge connector header comprising a throughbore and a bore in fluid communication with the throughbore;
- a first mandrel comprising, a first surface, an inner chamber, and a second surface;
- a second mandrel comprising a first surface and a second surface;
- and
- a sealing element adapted to sealingly engage, at a pack-off location, an inner portion of the well configuration unit located below the bore of the bridge connector header;
- wherein the well configuration unit is configured such that a first upward force is exerted on the second surface of the second mandrel and a second upward force is exerted on the second surface of the first mandrel;
- and
- exerting a first downward force on the first surface of the second mandrel and a second downward force on the first surface of the first mandrel;
- wherein the ratio of the first downward force to the first upward force is greater than the ratio of the second downward force to the second upward force.
7 more elements
Dependencies are inferred from the claim text.