Pump down tool

摘要

A pump down tool includes a resilient cup on the tool exterior to minimize leakage of pumped fluid around the outside of the tool when the tool is pumped into a well. The resilient cup is concave toward an upper end of the tool so it expands upon application of pressure to pump the tool into the well. The resilient cup is capable of expanding to a diameter sealing against the inside of the casing string. A fluid bypass around the resilient cup allows a fraction of the pumped fluid to stir up any proppant lying in the path of the tool thereby allowing the tool to move through a horizontal well without having to plow through the proppant.

主权项

1. A pump down well tool to be run inside a horizontal leg of a well including a casing string, comprising
a body having a first end and a second end, the first end including a connection to join with a work string to set the tool in the casing string; at least one malleable element disposed about the body; at least one slip disposed about the body; at least one conical member disposed about the body, whereupon the conical member acts to radially advance the malleable element and slips from a running in configuration toward the casing string during setting of the tool; and a resilient cup disposed about the body having a concave side facing toward the first end, the cup being configured to abut an internal dimension of the casing string in the running in configuration when the tool is pumped into the casing string, the cup being configured to push the tool along a distance, away from earth's surface, in the horizontal leg of the well in response to a pumped volume substantially equal to the internal volume of the casing string along the distance pushed.