CSI’s deepwater drilling,
completion, subsea engineers
and wellsite supervisors
are up to the challenge

This is no time to find out
details were overlooked

SME in extended horizontal
well multi-stage, high-density
frac techniques

CSI thrives in inland
water environments

At the end of the day,

our clients are satisfied customers

Shelby White

President & Senior Engineering Advisor

Growing up in North Louisiana as the only son of a cotton farmer and cattleman, Shelby learned early on the value of hard work. Having three older sisters, he mastered the art of being a good listener with traits of patience and humility.

Shelby knew early on that he wanted to be an engineer. Upon finishing high school with a scuba diving certification, Shelby recalls watching a Shell commercial showing divers around an offshore platform. Intrigued, he researched and discovered that petroleum engineering was a very challenging and profitable profession.

Working three summers in the oil fields between college semesters, Shelby demonstrated his value as a “college boy” roughneck on a Superior Oil barge drilling rig in South Louisiana, and as a wireline helper and production roustabout offshore Louisiana for Mobil Oil. He graduated in December of 1980 with a BS degree in Petroleum Engineering from LSU.

Shelby went to work for Mobil Oil in Denver, Colorado in 1981 as a drilling and completion engineer. He was responsible for projects primarily in the mid-continent area, and worked as a wellsite drilling engineer with rotational assignments offshore in Cook Inlet, Alaska and Morocco and Madagascar, Africa. Shelby also gained valuable field experience working as a drilling and completion rig supervisor on land locations in Oklahoma, Kansas and California. Shelby transferred back to Louisiana in 1988 to work as an offshore production engineer. It was in New Orleans where he was exposed to Gulf of Mexico HPHT wells. Shelby spent a total of 11 years at Mobil Oil gaining valuable industry knowledge and skills, including 160 days of formal training.

Shelby resigned from Mobil Oil in 1992 to become an independent drilling and completion consultant. He joined Flores & Rucks (later renamed Ocean Energy) as an employee in 1993 and stayed until the company was sold to Devon Energy in 2003. During this very active time in his career, he was directly responsible for 122 projects, including critical firsts such as OEI’s first horizontal well, first one-trip completion, and first subsea completion.

With a little girl and an expectant wife of twins at home, Shelby opted not to relocate to Houston with Devon. Although successful as an independent consultant, Shelby knew God was leading him to start his own company that not only specialized in completions, but would also be a worthy home for other high-integrity like-minded professionals. Shelby listened to God and founded Completion Specialists, Inc. in 2003, and has since been blessed with a company that attracts and retains some of the brightest and most-respected professionals in the O&G industry. Along with overseeing business activities for the company, Shelby has directly planned and supervised over 120 drilling, completion, workover and remedial projects over both water and land, including HPHT completions with equipment rated as high as 25,000 psi and 450°F.

Shelby’s passions outside of work are his faith, family, golf, tennis, hunting, fishing and traveling. Shelby has been a registered professional engineer in Louisiana for over 30 years with most of his 40 years of O&G experience in the Gulf of Mexico and South Louisiana. He belongs to several professional affiliations including API, SPE, IADC, AADE and SIPES, and chairs his church’s finance committee. Shelby has been married for 24 years and has three children.

Mark Knobles

VP of Business Development & Sr. Engineering Advisor

Born in Lake Providence Louisiana; Mark was raised in a Christian home with devoted parents and three siblings. Mark’s inquisitive nature was obvious early on where his hunger to question complex issues, then break it down to basics took hold and would serve him well in life. Mark graduated from Louisiana State University with a BS in Petroleum engineering. Chevron realized his capabilities quickly and progressed his career to the point where he led engineering teams on projects spanning the globe. Always the consummate professional, maverick and communicator; Mark’s team efforts advanced deep-water well-completion technology and best practices by leaps and bounds earning him several industry awards and garnering much respect in the oil and gas industry along the way.

Mark co-authored four hallmark Society of Petroleum Engineers (SPE) technical papers and numerous published articles and white papers. These papers were based on data driven solutions associated with deep water completions. See SPE papers #187353-MS, 165108, 166253 and 113094.

After 19 great years with Chevron, Mark left to become a principal partner with Global Completion Services (later renamed SPS International Ltd.) that developed downhole tools unique to drilling and completion operations. Mark’s ventures were uniquely branded in such a manner to become O&G household names with over 70 patented tools used throughout the world. Mark worked with venture capitalists in the UK to ultimately sell SPS to Smith Tools and Schlumberger in 2006.

Since the sale of the service tool company, Mark invested the next 12 years leading efforts in deep water operations at BP then again at Chevron, of which he retired from in late 2017.

Armed with a copious load of industry knowledge and a great reputation, Mark joined Completion Specialists Inc (CSI) in September 2019 as an owner/partner to pursue yet another vision to grow their niche in drilling with an emphasis on land, shelf and now deep water completions. Mark plans to bring other opportunities into the CSI fold later this year.

Since Mark has a reservoir and production engineering background, he also works with operators to manage field operations, optimize well production and conduct field studies to determine the value of the asset and establish a minimal sales price (MSP).

Mark loves being with his wife, two sons, daughter and seven grandchildren.  He is truly invested in his faith, is active in his community and enjoys working on his farm, fishing and bird hunting.

Greg W. Stutes

Senior Engineering Advisor

Gregory W. Stutes is a Senior Engineering Advisor for Completion Specialists, Inc. His professional work history spans over 32 years where he has been an owner/partner at CSI for the past 15 years.  Raised in Houston with three sisters (whom he is still very close to), it was Greg’s maternal grandparent’s farm they called “the country” that was the setting for Greg’s natural, God-given mechanical talents to flourish because everyone knows there’s always something to be done on a farm from carpentry, auto mechanics, construction, operating tractors to hunting and fishing. Greg credits his father and his maternal grandfather’s practical wisdom and country-strong determination for his can-do, failure-is-not-an-option attitude.

In 6th grade, Greg’s family moved to Lafayette where he still resides. Although removed from the family farm, Greg and his sisters quickly owned the hills and hollers of rural Lafayette. Suffice to say, the Stutes kids were rarely indoors.

Greg parlayed his rich childhood experiences, instilled high integrity and strength of character into a career in oil and gas. Prior to working as a consultant, Greg spent 17 years mostly with Conoco, Drilling Services of America, Halliburton Integrated Solutions and Chevron working offshore Gulf of Mexico completions, workovers, well servicing, and production operations. After initially starting college at LSU in Mechanical Engineering, Greg returned to Lafayette and earned his BS in Industrial Technology from USL in 1987. He launched in the O&G industry, operating wells and platforms in the GOM for five years rotating 7&7 with offshore crews that became his extended family, and becoming a very proficient mechanical and hydraulic crane operator in the process. But when asked, Greg defers success to the teams around him. As an empathetic leader, Greg believes the greatest contribution he can make to any team is to humbly provide the tools, techniques and leadership to equip others for success. Naturally, Greg’s “Scotty-esque” attention to detail and mechanical aptitude, coupled with his calming demeanor, took him off the deck and into the office where he has stayed for 27 years to date.

Since joining Completion Specialists in 2005, Greg has directly planned and supervised over 50 new completions and workovers onshore and in federal and state waters for CSI’s clients.

Greg has been blessed with over 32 years of marriage. Like most career oil and gas professionals, Greg spent considerable time away from his supportive loving wife and can count on one hand the number of vacations that did not involve work. Unlike many of his contemporaries, Greg has been fortunate to always call Lafayette home.

Greg is a member of SPE, AADE, SPWLA, API, IADC and LAGCOE, and has received numerous scholastic and professional society accomplishments. He recently served as chairman of LAGCOE during 2018-2019.

Claire D. Frantzen

Administrative Assistant

A native to south Louisiana with large extended French families on both sides, Claire is the second of four children. Growing up she was taught to never be late. Coupled with her natural tendency to keep things straight, organized and running smoothly, Claire is a model for dependability.

Claire’s professional life has been almost exclusively in the oil and gas industry. Attracted to oil and gas, Claire jumped into the industry in 1979, and she still enjoys the process and the excitement of being involved from the permit application all the way to the end of the life of the well.

In her early years, Claire served as an office manager for Badger Oil and later as a secretary at Dynamic Exploration. Her 41 years of experience include records maintenance, joint interest billing, revenue payments, State of Louisiana permitting and reporting, and all aspects of business accounting.

In May 2005, Claire joined the CSI team as Administrative Assistant. Claire is responsible for all administrative duties of the company including receptionist, accounts receivable and payable, payroll, tax reporting, record keeping, and engineering support. She is a vital member of the CSI team and is a partner/owner in the business.

Claire is a member of API and serves as a board member of the local API chapter.

Clay C. Knobles

Senior Business Development Manager

Clay Knobles is a Business Development Manager for Completion Specialists, Inc. (CSI). His work history spans 24 years in the oil and gas service industry handling Business Development and Account Management responsibilities. His “oil field” career started when he was young as a roughneck / floor hand for Goldrus Drilling Company working in deep, HPHT wells of East Baton Rouge Parish during the Summers, Christmas and Spring Break holidays to help put himself through LSU. While attending LSU, Clay was invited into membership to Phi Eta Sigma (National Honor Society) and Omicron Delta Kappa (National Scholastic, Leadership and Service Society). Clay would later become the President of Phi Eta Sigma’s LSU Chapter. Clay also served in LSU’s Student Government Association and LSU’s Athletic Governing Council.

Clay began his “professional” oilfield career with TIW (Texas Iron Works) under the tutelage of Mr. Herman Hebert. Clay learned the liner hanger and packer equipment quickly and tripled TIW’s ExxonMobil revenue in two and half years. Clay also has gained 10 years’ experience in the wellbore cleanout segment including debris extraction, AV boosting, circulating valves, negative testing liner tops, sump packer cleanout runs and single trip drillout / displacement / cleanout runs. Clay has performed over 60 deepwater cleanout projects including Eni (Allegheny, Longhorn, Devil’s Tower), Shell (Perdido, Great White, Tobago), BHP (Shenzi, Neptune) just to name a few. Clay had great success with Cannon’s Control Line Protectors selling the low carbon steel technology, designs and advantages over molded cast steel protectors. Clay was promoted up through the ranks of increasing responsibility including being in charge of SE Asia and was tasked with establishing new representative agents in Malaysia, Thailand, Vietnam, India, Australia and Brunei. Clay and the sales team grew record profits for 8 consecutive months.

Clay believes in professionalism meaning how you present yourself in appearance, demeanor, and interactions with your clients. Clay has the ability to work well with all people within his company’s and his clients’ organizations and has a great sense for the slightest attention to detail. Clay believes you only have your name and your word in this world and he has worked extremely hard to keep both intact.

Clay’s interests outside of work are spending time with his wife of 24 years, playing golf, traveling, meeting people and keeping up with sports.