Retrievable Filter Screen Assembly

Abstract

A retrievable filter screen assembly is provided, comprising a nonmagnetic carrier sub suspended from a first pulling tool connected to a wireline; a nonmagnetic filter screen disposed within the carrier sub, and having a first end supported by a bell housing operatively positioned within the carrier sub, and wherein the first end of the filter screen can be disconnected from the bell housing via shear pins; wherein the filter screen further includes a second end adapted to receive a second pulling tool positionable within the carrier sub, and wherein the pulling tool is connectable to an MWD source.

The invention claimed is: 
     
         1 . A retrievable filter screen assembly, comprising:
 (a) a nonmagnetic carrier sub suspended from a first pulling tool connected to a wireline;   (b) a nonmagnetic filter screen disposed within the carrier sub, and having a first end supported by a bell housing operatively positioned within the carrier sub, and wherein the first end of the filter screen can be disconnected from the bell housing via shear pins;   wherein the filter screen further includes a second end adapted to receive a second pulling tool positionable within the carrier sub, and wherein the pulling tool is connectable to an MWD source.