Circa 1978

Circa 1983

Circa 1992

Circa 1999


Founded in 1978 by the late Patrick Alleman, Hole Opener Corporation has grown from a small domestic rental company to a prominent provider of specialized drilling equipment that services its patented tools worldwide.

June 28, 1978: Hole Opener Corporation is established with a small inventory of hole openers, stabilizers, mills and subs


October 1984: Seeing a need for a new product line, Patrick is introduced to a young engineer, Kent Rives. Begin design and manufacturing of HOC’s first underreamer.


February 27, 1985: Kenneth Broussard joins HOC as the operations manager


1987: Machine shop is opened and begins building tools


1996: HOC is approached by a Houston-based company, and begins selling Security/Dresser hole opener spare parts internationally, paving the way for HOC to promote its own line of tools


2002: The RHO hole opener is born. The most versatile hole opener on the market proves to be an international workhorse


October 2003: HOC wins First Place at LAGCOE for Inside Single Booth Exhibit


August 18, 2005: Patrick Alleman passes away. Debbie Alleman takes over as President of HOC


October 2007: HOC wins First Place at LAGCOE for Inside Single Booth Exhibit


February 2010: Kenneth Broussard completes his 25th year with HOC

May 2010: HOC is awarded biggest contract in existence to supply voluminous amount of RHO type hole openers in Brazil


January 2011: Hole Opener Corporation International (HOI) is established to begin selling and maintaining HOC’s tools internationally


June 2013: HOC ships inventory of underreamers to Cabinda, Angola to drill a never before attempted pipeline under the Congo River in order to connect the DRC and Angola



June 23, 2018: HOC will celebrate it's 40th year in business. 1 Family, 40 years of history. How many can say that!?!