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BDO USA, LLP 333 Clay St., Suite 4700 Houston, Texas 77002 Telephone: (713)-659-6551 Fax: (713)-659-3238 

Leann M. Conner Natural Gas Services Group Investor Relations Coordinator Telephone: (432) 262-2700 Fax: (432) 262-2701 

## Stephen C. Taylor 

Chairman of the Board, President and Chief Executive Officer 

## G. Larry Lawrence 

Vice President and Chief Financial Officer 

## James R. Hazlett 

Vice President –Technical Services 

## Independent Auditors 

## Investor Relations 

## EXECUTIVE OFFICERS & DIRECTORS 

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## John W. Chisholm 

Director, Founder, Wellogix, Inc.; President, CEO, Chairman of the Board, Flotek Industries 

## William F. Hughes 

Director , Co-Owner, The Whole Wheatery, LLC 

## Charles G. Curtis 

Director, Retired, Former President and Chief Executive Officer of Curtis One Inc. dba Roll Stair 

## Legal Counsel 

David A. Thayer Jones & Keller, P.C. 1999 Broadway, Suite #3150 Denver, Colorado 80202 Telephone: (303) 785-1623 Fax: (303) 573-8133 

## David L. Bradshaw 

Director, Oil and Gas Investor, Former Chairman and CEO, Tipperary Corporation 

## Kenneth V. Huseman 

Director, President and CEO, Basic Energy Services 

## Annual Meeting of Shareholders 

June 13, 2012 8:30 A.M. CDT DoubleTree Hotel 117 West Wall Street Midland, Texas 79701 

## Transfer Agent & Registrar 

Computershare Trust Company, Inc., Golden, Colorado 

