"THE WELL DOCTORS"Innovation | Execution | Partnership | Performance
Leo E. Hill Jr.CEO and President of WelDNA Inc.
Project Managing/Engineering, Consulting, Coaching and Advisory
Preventing D&C / WI and P&A Problems Before They Start from the Rig to the Board Room
We balance vision with execution, compassion with accountability, and faith with disciplined leadership, driving operational excellence and measurable business transformation.
- Independent drilling, well integrity, and lost circulation advisory helping operators reduce risk, avoid non productive time, and improve well performance.
- With more than 40 years of drilling, completions, and well integrity experience, WelDNA Advisory provides practical technical guidance to operators and service companies across North America and international markets.
- When drilling problems occur, the cost can escalate quickly. Our role is simple: help identify risks early, apply proven engineering solutions, and prevent costly operational failures before they happen.
Experience That Reduces Drilling Risk
- WelDNA Advisory was founded by Leo Hill, a senior industry executive and engineering advisor with decades of experience supporting operators, drilling contractors, and service companies worldwide.
- WelDNA has led engineering, operational, and commercial programs across drilling, completions, and well integrity disciplines, supporting projects in North America, South America, the Middle East, and Asia Pacific.
- His experience includes leadership roles with global service companies, technical advisory support for international operators, and development of technologies focused on well integrity, lost circulation prevention, and operational efficiency.
**This experience provides clients with something that cannot be replaced by software or modeling alone: real world operational knowledge.
Our Focus
WelDNA Advisory specializes in helping operators address the technical and operational challenges that commonly lead to drilling delays, cost overruns, and well integrity issues.
Key focus areas include
- Lost circulation prevention and mitigation
- Wellbore strengthening strategies
- Drilling risk review and program evaluation
- Cement integrity and zonal isolation
- Well integrity planning and troubleshooting
- Nonproductive time reduction strategies
Our objective is to help operators make better technical decisions before problems occur.
Advisory Services
Well Plan Risk Reviews
- Independent technical review of drilling programs to identify potential operational risks prior to drilling. This includes evaluation of mud programs, casing design, cementing strategies, and lost circulation risk.
- Early identification of risks helps operators avoid costly operational delays.
Lost Circulation Advisory
- Rapid technical support for drilling operations experiencing partial or full losses.
- Advisory services include evaluation of formation conditions, particle size distribution strategies, stress cage concepts, and operational procedures to restore circulation and continue drilling safely.
Wellbore Strengthening Programs
- Development of drilling strategies designed to improve wellbore stability and prevent formation breakdown.
- These programs combine engineering analysis with practical field experience to reduce losses and improve drilling efficiency.
Operator and Engineering Training
Technical training programs for drilling engineers, operations teams, and field personnel focused on practical solutions for
- Wellbore Shielding
- Lost Circulation Management
- Well Integrity Planning
- Cement Performance
- Drilling Efficiency and Risk Reduction
- FIT, Casing Integrity
- Cement Enhanced Bonding and Fluid Loss
Expert Witness and Technical Consulting
- WelDNA Advisory provides independent technical consulting and expert witness support related to drilling operations, well failures, contract disputes, and operational incidents.
- Services include technical review, expert reports, deposition support, and litigation consulting.
Industries Served
WelDNA Advisory supports both operators and service companies across the oil and gas industry, including organizations such as -senior field leadership and operations roles supporting drilling, completions, and well construction programs for operators including EOG Resources, EQT Corporation, WildHorse, Shell (Gulf of Mexico deepwater), BP / Equion Energía (Colombia), Devon, Apache, SM Energy, Newpark, Royal Dutch Shell – Syria, Egypt, Nigeria; Cabinda Angola and Hess (Equatorial Guinea). I was responsible for execution planning, field leadership, safety performance, contractor coordination, and overall operational results across onshore, offshore, and deepwater projects.
We also support cementing companies, independent operators, private equity backed exploration companies, and emerging technology providers.
Why Experience Matters
- In drilling operations, small technical decisions can create large operational consequences.
- Lost circulation, wellbore instability, and cement failures can lead to significant non productive time and increased operational costs.
- Experience plays a critical role in recognizing these risks early and applying practical solutions that keep drilling operations moving forward.
- WelDNA Advisory brings decades of lessons learned to every project.
Request a Technical Consultation
If your team would benefit from an independent review of drilling programs, well integrity planning, or lost circulation strategies, WelDNA Advisory is available to assist.
For inquiries or technical consultation requests, please contact
Leo Hill
Founder and Executive Advisor
WelDNA Advisory
Phone: 1-281-389-1351
Email: leh@weldna.com
Take the Next Step
(Start by sending message below)
Contact
Send us a message to find out more
