US 7,320,365 B2
Methods for increasing production from a wellbore
Giancarlo T. Pia, Aberdeen (United Kingdom)
Assigned to Weatherford/Lamb, Inc., Houston, Tex. (US)
Filed on Nov. 02, 2004, as Appl. No. 10/979,600.
Application 10/979600 is a continuation of application No. 10/127325, filed on Apr. 22, 2002, granted, now 6,810,960.
Prior Publication US 2005/0092498 A1, May 05, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 43/00 (2006.01)
U.S. Cl. 166—370  [166/376; 166/312; 175/57] 19 Claims
OG exemplary drawing
 
1. A method for increasing production in a well comprising:
inserting an assembly into the well, the assembly having a skin removal device disposed therewith;
positioning the skin removal device near a zone of interest in the well;
creating an under-balanced pressure condition in the well;
removing a skin from an inner diameter of the well with the skin removal device while maintaining the under-balanced pressure condition; and
maintaining a skin reduced portion of the well where the skin has been removed by the skin removal device while maintaining the under-balanced condition.