Patent ID: 9677376
Date: 2017-06-13
CPC Classifications: E21B,Y10T

Claim:
1. An apparatus comprising: a housing having a first end and a second end; an annular section disposed within the housing; a tubular section extending through the annular section and defining a plurality of ports extending radially through the tubular section and a flowpath extending axially in the tubular section, the flowpath and the plurality of ports being in fluid communication, wherein the tubular section and the annular section at least partially define a first chamber, and a second chamber is at least partially located radially intermediate of the tubular section and the housing; a piston coupled with the tubular section and configured to prevent flow from the first end to the plurality of ports when the piston is in a closed position, wherein the piston allows fluid flow to the plurality of ports when in an open position; and a biasing element disposed in the first chamber and configured to bias the piston into the closed position, wherein, when the apparatus is deployed, the biasing element, a fluid pressure in the first chamber, and a fluid pressure in the second chamber resist movement of the piston toward the open position.