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Drilling Expert Witnesses

Drilling expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on drilling. The drilling expert witness listings on this page are typically from fields/areas of expertise such as: Blasting and Explosives, Civil Engineering, Economics, Energy, Engineering, Environmental, Geology, Geotechnical Engineering, Hydrology, Mechanical Engineering, Mining, Oil and Gas, Petroleum Engineering, and Products Liability.

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Mohamed A Younis, PE

Expert Subsurface Tunnel Underground Engineer

Subsurface & Tunnel Engineering, LLC

California

Geotechnical Engineering, Engineering - Geotechnical, Subsurface, Underground, Tunnel, Substructures, Earthwork, Drilling

Provide expert litigation, arbitration, and mediation support, exclusively focusing on geotechnical engineering for complex, high-stakes subsurface, tunnel, and underground design and construction disputes involving complex projects. Recent engagements include but are not limited to: Providing expert litigation support and testimony on behalf of a county’s $1.6B transportation project in defense of claims brought by the general contractor (2025; ongoing); Provided expert litigation support to legal team hired by a top-tier design-build team to defend claims associated with a $1.4B transportation project (2022); Provided testimony on behalf of a contractor’s defense team in conjunction with a $2.4B transportation project (2018) Publications: Elisa Comis, Mohamed Younis, and Robert Goodfellow. Concurrent Segment Lining and TBM Design: A Coordinated Approach for Tunneling Success. Proceedings of World Tunnelling Congress (WTC) 2016, April 22-28, 2016, San Francisco, CA Moussa Wone, M...

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Eros Bilyeu, PG, CHG, QSD, QSP, CGWP

Groundwater and Contaminant Hydrogeology, & Wells

Hydro-Geologic Solutions, Inc.

Newport Beach, California

Geology, Environmental - Hydrogeology, Wells, Geologic Modeling, PFAs, Drilling, Groundwater and Soil, Recharge, Volatile Organic Compounds - VOC, Bedrock and Karst, CERCLA, Aquifers & Characterization, Aquifer Storage and Recovery - ASR, Chlorinated Solvents, Water Suppy, RCRA, Contamination, Managed Aquifer Recharge - MAR, Well Performance, Water Resources

Eros A. Bilyeu, PG, CHG, CGWP, QSD/QSP is a California-licensed Professional Geologist and Certified Hydrogeologist specializing in groundwater supply, recharge, and contamination investigations. He is the Principal Hydrogeologist of Hydro-Geologic Solutions, Inc., a certified small business headquartered in Newport Beach, California. Mr. Bilyeu provides expert analysis, consulting, and testimony for litigation, permitting, and regulatory matters involving complex subsurface and water-supply issues. Eros has been retained as an an expert witness five times, deposed once, and requested to testify twice in the last four years. Following expert opinion reports/presentations or deposition, cases have ended in settlement and satisfied clients as a result. Mr. Bilyeu has more 18 years of hydrogeologic experience supporting cities, water districts, and engineering firms throughout California and the western U.S. His expertise spans: Well design, construction, and performance testing (...

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Tyson S Foutz, PE

Oilfield Operations and Petroleum Engineering

Foutz Consulting, LLC

Durango, Colorado

Oil and Gas, Engineering - Oilfield Operations, Well Control, Petroleum Engineering, Upstream Oil & Gas Industry, Drilling, Artificial Lift Design, HTHP, Reservoir Engineering, Hydraulic Fracturing, Intellectual Property, Rig Supervision, Well Integrity, Pressure Control, Mineral Leasing, Oilfield Safety, Oilfield Consulting, Oilfield Pollution, CCS

Tyson S. Foutz is a petroleum engineer with broad experience in the upstream oil and gas industry, particularly in oilfield operations, drilling, and well control. Tyson is a licensed professional engineer and a member of the Society of Petroleum Engineers, American Petroleum Institute, American Society of Safety Professionals, and the American Association of Drilling Engineers. He provides oilfield consulting focusing on operations and project execution in both office and field environments to supplement his expert witness services. Recent projects include: • Expert witness, water handling facility explosion • Developed basis of design for CO2 sequestration wells, leading EPA guidance by over 1 year • Expert witness, water well rig staff injury • Oilfield wastewater disposal facility environmental remediation • HTHP onsite consultant for Kurdistan deep test • Shakedown and evaluation of US purchased rig for transport to Chile • Expert witness for intellectual property claim • D...

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KURT E GLEASON

Mining and Construction Blasting Expert Witness

Rock Management Services, LLC

Eckerty, Indiana

Blasting and Explosives, Mining - Construction, Mining, Blasting, Explosives, Drilling

PROFESSION: Mining & Construction Blasting Consultation; Claims Investigation; Expert Witness Testimony EDUCATION: BS Construction Engineering (Civil) 1985, Purdue University Associates in Applied Science Building Construction Technology 1983, Purdue University LICENSES/PERMITS: FEL License Number (18 U.S.C. Chapter 40) 4-IN-061-33-0C-00812 (retired) IN Regulated Explosive Use - Operator PSID # 8186-6097 (retired) IN Regulated Explosive Use - Blaster PSID # 8186-6097 (retired) DMRE Explosives and Blasting Branch - KY Blasters License #9869 (retired) CERTIFICATION: MSHA Miner ID: MIIN – M70515220 Office of Surface Mining Blaster Certificate# OSM-942-0066 (retired) IN Dept. of Natural Resources Certification #660 (retired) ...

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Mohamed A Younis, PE

Expert Subsurface Tunnel Underground Engineer

Subsurface & Tunnel Engineering, LLC

Gaithersburg, Maryland

Geotechnical Engineering, Engineering - Geotechnical, Subsurface, Underground, Tunnel, Substructures, Earthwork, Drilling

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Timothy D Bechtel, PhD, PG

Franklin and Marshall College

Lancaster, Pennsylvania

Environmental, Hydrology - sinkhole, groundwater, landslide, drilling, hydrogeology, rockfall, karst, vibration, blast, earthquake, contamination, pipeline, fracking, water, erosion, construction, stormwater, physics, leak, cave

Dr. Bechtel is geophysicist/geologist, and a world-renowned expert on sinkholes. But not just sinkholes; bedrock conditions, caves, water pollution, and all issues related to karst terranes. Dr. Bechtel has 25+ years of experience in the engineering/environmental industry, as well as faculty positions at Franklin & Marshall College, the University of Memphis and the University of Pennsylvania, and is an appointed member of the International Karst Commission. Dr. Bechtel has been an expert in dozens of sinkole or karst-related cases - often related to causes of sinkholes and/or water problems. Dr. Bechtel also has expertise and courtroom experience in Unconventional Oil & Gas, hydraulic fracturing (fracking), and fracking-industry-related earthquakes, horizontal directional drilling (HDD), as well as all fields of seismology, seismic hazards, vibration monitoring and analysis, subsidence, soil creep, landslides, rockfalls, non-destructive evaluation of earthen dams and levees, subsu...

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Nicholas S Cleveland

Operations Engineer/Project Manager - Oil & Gas

New Auburn Energy Management

Fort Worth, Texas

Oil and Gas, Petroleum Engineering - Oil, Gas, Drilling, Completion, Engineering, Operations, Wellbore, Downhole, Horizontal, Directional, Production, Well Control, Casing Design, BHA - Drilling Tools, Fishing Operations, Multi-Well Pad, Cement Design, AFE/Cost Estimates, Project Management

Results-driven Engineer & Project Manager with over 20 years experience in drilling, completions, and production across major U.S. basins. Proven ability to stand-up operations, minimize drilling costs, optimize well performance, and enhance operational efficiency. Experienced in managing multi-well projects, AFE preparation, vendor & contract negotiations, and wellbore construction. Adept at directional drilling, cementing and casing design to maximize operational success. Technical Expertise includes Wellbore Design & Construction, Horizontal & Directional Drilling Techniques, AFE (Authority for Expenditure) Preparation, Vendor Services, Drilling Rig Optimization, Multi-Well Pad Development, Simultaneous Operations, Fishing Operations.

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Bill Cline

Oil and gas expert reports, valuations, testimony

Cline Energy Advisors LLC

Houston, Texas

Oil and Gas, Economics - Valuation of petroleum assets, international oil and gas, petroleum contracts and agreements, petroleum sector taxation, petroleum engineering, energy economics, geology, arbitration and litigation, petroleum industry standards and practices, industry expert, drilling, exploration and production

Mr. Cline has acted in the capacity of expert witness particularly with respect to valuation of petroleum properties and/or petroleum industry practices in numerous arbitration, mediation and litigation proceedings including: ExxonMobil vs. Venezuela (ICSID); ExxonMobil vs. Petróleos de Venezuela (ICC); Anadarko Petroleum/Maersk vs. Sonatrach (UNCITRAL); Maersk vs. Algeria (ICSID); Sonatrach vs. Duke (UNCITRAL); Texaco vs. Apache (AAA); Vanco vs. Ukraine (Stockholm Chamber of Commerce); Occidental vs. Ecuador (mediation); CNOOC vs. Talisman (mediation); a series of arbitrations related to Egypt’s natural gas sector (ICC, ICSID, UNCITRAL and CRCICA); Midland Resources vs. Shtaif et al. (Ontario Superior Court); Total/ExxonMobil/Chevron/Nexen vs. NNPC (Nigerian arbitration); Repsol vs. Chevron (Spanish litigation); Niko vs. Bangladesh (ICSID and Bangladesh litigation); First National Petroleum vs. TNG (Stockholm Chamber of Commerce); Nexen/Occidental et al. vs. Yemen and multiple case...

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Mohamed A Younis, PE

Expert Subsurface Tunnel Underground Engineer

Subsurface & Tunnel Engineering, LLC

Texas

Geotechnical Engineering, Engineering - Geotechnical, Subsurface, Underground, Tunnel, Substructures, Earthwork, Drilling

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Gary L. Trotter, PE

O and G Engineering in Drlg., Comple., and Facil.

New Tech Global

Boerne, Texas

Energy, Engineering - Drilling, completion, production, oil/gas facilities, secondary and teriary recovery, project management, workovers, safety, hydrogen sulfide effects, acid gas injection wells, onshore, inland waters, offshore, petroleum operations

Domestic and international exploration and production experience both onshore and offshore with major, independent, and private oil and gas companies. Career began with operational engineering assignments, transitioning into supervisory and executive management prior to founding a project management business which sold to Schlumberger. Strengths include experience in all phases of upstream exploration and production business management and operations execution. Strong written, verbal and leadership skills and ability to create and sustain solid interpersonal relationships. Numerous successful oil and gas expert witness assignments throughout career.

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Eugene J Sweeney

Oil and Gas Engineer

Spring, Texas

Oil and Gas, Petroleum Engineering - well control, well operations, blowout, oilfield accident, petroleum engineering, oil asset valuation, drilling, completions, rig, explosion, refinery, safety, remediation , engineering and operations , oilfield , oil and gas , oil lease , gas lease , gas explosion , rig fire

I graduated with a BS from MIT and have advanced degrees from Texas A&M (Petroleum Engineering) and UMich. I have over 25 years' experience as a leader in the Oil and Gas industry. My certifications include: Licensed Petroleum Engineer (Texas license # 102422) Certified SPE Petroleum Engineer Certified Safety Professional (BCSP) I have performed expert witness and evaluation for both identification of root causes of oilfield accidents and asset valuations. Exploration and production of oil and gas assets and economic analysis of energy assets. Asset portfolio management and reservoir management. Leading BP’s global well control team after the Macondo incident to address the institutional risks that had led to the catastrophe. During my 7-year tenure there was a marked 70% reduction in higher level events Analysis and remediation of oil and gas well accidents- led incident investigations for well control incidents Numerous publications and patents

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Randall King, PhD, PE

Mech Engineer, Patents, Products Liability, Design

King Professional Engineering, Inc.

DALLAS, Texas

Mechanical Engineering, Products Liability - Patents, products liability, machinery design, failure analysis, design defects, 15 US patents + 6 int'l patents, Oilfield, industrial accidents, pumps, valves, consumer products, mechanical equipment failures, inventorship, infringement, invalidity, manufacturing defects, piping, compressors, Agricultural accidents, Drilling

Dr. King is a licensed professional engineer with a Ph.D‭. ‬in mechanical engineering‭: 40+ ‬years experience in mechanical engineering‭, ‬product design‭, research and development of high-pressure oilfield fracturing pumps and automotive components, forensic investigation‭, ‬and litigation support‭. 10 years high-pressure equipment design & R&D at Halliburton, 8 years automotive component design & R&D at NTN, ▪ Testified at 11 trials & 58 depositions ▪ 25 Patent, IPR, & PGR cases – 4 trials & 12 depositions ▪ 21 Patents ▪ Patent infringement, invalidity, inventorship, claim construction ▪ Products liability ▪ Design defects & manufacturing defects ▪ Failure analysis ▪ Oilfield, Industrial, Construction, & Agricultural accidents ▪ Pumps, valves, compressors, blowers, piping ▪ Cranes, trucks, lifts, ATV's ▪ Ag equipment ▪ Consumer products Dr. King has served as a forensic engineer for over 20 years, testifying at 11 trials and 58 depositions in state and federal cou...

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Michelle L Macauley

Geotechnical Engineer and Trenchless Expert

Macauley Expert Services

Ritzville, Washington

Geotechnical Engineering, Civil Engineering - trenchless, drilling, tunnel, tunneling, pipeline, HDD, microtunnel, auger, boring, pipe, ramming, sinkhole, geology, construction, DSC, differing, horizontal, directional

I am a nationally recognized Geotechnical Engineer and Trenchless Expert. I have been involved with litigation matters involving construction issues related to pipeline installations using trenchless technologies. Qualifications and Accreditation M.S., Geological Engineering, University of Alaska, Fairbanks, 1996 B.S., Geological Sciences, University of Washington, 1994 California: Professional Engineer (Civil), Cert. No. C74224 Washington: Professional Engineer (Civil), Lic. No. 37412 Alaska: Professional Engineer (Civil), Lic. No. AELC11636 Texas: Professional Engineer (Civil), Lic. No. 160143 Memberships and Professional Organizations American Society of Civil Engineer (ASCE) • Executive Committee, Pipeline Division, Board member, 10/2024 to present • Manual of Practice (MOP) for Introduction to Trenchless Technologies (new MOP), Committee chair, 9/2024 to present • MOP for Horizontal Directional Drilling (MOP 108) committee member, 2021 to present • MOP for the Direct Steera...

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Randall M Albert, PE

Shale Advisory Group, LLC

Bluefield, West Virginia

Energy, Oil and Gas - Leases, JOA, Safety, Drilling, Completions, Operations, Project Management, M&A, Midstream, Upstream, Damages, Mining

I have over 40 years experience in the Energy sector with the last 20 at the C-Suite level. I have extensive experience as an expert witness for both defendant and plaintiff. I have worked with large national law firms and small regional law firms. I have provided both deposition and trial testimony.