US 10,309,188 B2 · Vee ramp slips with plug

Abstract

A plug is provided that includes a mandrel, a sealing element, a slip and ramp assembly, a lock ring, at least one antirotation device, and a lower ball standoff. The slip and ramp assembly have linear and radial angles allowing a mandrel wall that is thin when compared to the overall diameter of the mandrel. The sealing element is configured so that when set additional pressure from the surface increases the sealing ability of the sealing element. Antirotation devices are provided to assist in mill out. Lock ring is provided to keep the slips in their set position and a further configured so that additional downward forces increase the locking ability of lock ring. A lower ball standoff is provided so that in the event of reverse flow a ball from below is prevented from lodging within the plug and is held at the lower end of the plug were standoffs are provided to allow fluid flow around the ball.

Claims22

Dependent claims

A tool for downhole use comprising:

a mandrel having a ramp,
wherein the ramp has a first angle and a second angle,
wherein the ramp first angle is radially offset and on a plane perpendicular to a line extending radially outward from the centerline of the mandrel and the ramp second angle is between a 10 and 30 degree angle from a line extending radially outward from the centerline of the mandrel;
a slip having a first angle and a second angle,
wherein the slip first angle and the slip second angle, corresponds to the ramp first angle and the ramp second angle,
a sealing element circumferentially mounted on the mandrel, and
a backup ring circumferentially mounted on the mandrel.

4 more elements

Dependencies are inferred from the claim text.

Vee ramp slips with plug

Life of this patent

Vee ramp slips with plug

Life of this patent

Abstract

Claims22