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`GEORGE H. MEDLEY, P.E.
`EXECUTIVE VICE PRESIDENT
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`SUMMARY OF QUALIFICATIONS:
`• Thirty-eight years in the Oil and Gas Industry, Domestic & International / Onshore & Offshore.
`• Drilling, completion and production engineering with extensive geographic, operations, and
`technology experience.
`• Underbalanced and Managed Pressure Operations Specialist.
`• Extensive experience in horizontal drilling and completion of new drills and re-entries.
`• Extensive Unconventional Drilling experience in subnormal to abnormal pressured formations
`including sour gas environments. Drilling fluids used include WBM, OBM, air, nitrogen, natural
`gas, aerated fluids, foam, diesel and brines.
`• Operations management of drilling and workover operations.
`• Management of research and development programs for the US Department of Energy (DOE),
`the Gas Research Institute (GRI), and the Drilling Engineering Association (DEA).
`• Development and delivery of domestic and international training in advanced drilling and
`completion technology.
`• Provide litigation support in the form of expert witness testimony.
`PROFESSIONAL LICENSES:
`• Registered Professional Engineer in the States of Texas (No. 50273) and Colorado (No. 24526).
`WORK HISTORY:
`Signa Engineering Corp. Executive Vice President
`2002-Present
`Sr. V. President – Engr. Training & Research 2000-2002
`
`Sr. Project Manager
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`1998-2000
`Maurer Engineering Inc. Sr. Drilling Engineer
`1994-1998
`Exxon Co., USA
`Sr. Staff Engineer
`1985-1994
`Supervising Engineer
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`1982-1985
`
`Project Engineer/Sr. Project Engineer
`1977-1982
`EDUCATION:
`• B.S., Civil Engineering, Texas A&M University, College Station, Texas, 1977 (Summa Cum
`Laude).
`• Over 1,500 hours of company and industry-wide technical training and over 200 hours of
`training in management, supervisory, and interpersonal skills.
`PROFESSIONAL MEMBERSHIPS:
`• Society of Petroleum Engineers
`
` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`AWARDS & PATENTS:
`• 2006 North American Gulf Coast Region Society of Petroleum Engineers annual award for
`Distinguished Contribution to Petroleum Engineering in the Area of Drilling and Completions.
`• Maurer, William C., Medley, Jr., George H., and McDonald, William J., 2003: Multi-Gradient
`Drilling Method and System, US Patent No. 6,530,437 B2, March 11.
`CLASSROOM INSTRUCTOR:
`Signa Engineering Corp.
`• Walking the Line: Managed Pressure Drilling
`• Closed-Hole Circulation Drilling
`• Project Management Approach to Underbalanced Operations
`• Horizontal / Multilateral Technology
`Maurer Engineering
`• Drilling Engineering Association Underbalanced Drilling and Completions School
`• Computer Software Training (Multiple sessions)
`Exxon Co.
`• Drilling Technician Operations School
`• Subsurface Engineering School
`DETAILED WORK HISTORY:
`
`SIGNA ENGINEERING CORP., Houston, Texas
`Executive Vice President & Senior Vice President (2000–Present)
`Expanded technology training schools by initiating schools on new subjects. Continued planning
`drilling programs and analyzing technical problems associated with drilling wells. Provide Project
`Management for a variety of drilling programs. Provide litigation support in the form of expert witness
`testimony.
`• Developed operational procedures, project management tools, engineering assistance and training
`tools for Managed Pressure Drilling for ExxonMobil Kurdistan Region of Northern Iraq, Sakhalin
`Island, and Equatorial Guinea, Conoco-Phillips UK sector of North Sea (Jade), Chevron UK North
`Sea (Alba), Power Well Service-Expro use on Statoil’s Kvitbjorn MPD project in the Norwegian
`North Sea, Shell Auger TLP in the Gulf of Mexico and Shell Malaysia Pressurized MudCap Drilling
`Project in South China Sea, world’s first application from a floating drilling vessel (sub-sea BOP).
`• Project Manager for Managed Pressure Application for Cypress E&P on a High Temperature/High
`Pressure well near Texas gulf coast.
`• Developed and facilitated implementation of a Hazard Identification (HAZID) and Mitigation
`process on projects for AGIP KCO (Caspian Sea), Shell Malaysia (South China Sea),
`ConocoPhillips (south Texas), Apache Oil and Gas (inland barge in Mississippi), Maris International
`and Varco International for the Continuous Circulation System, Shell E&P (MARS and Auger
`TLPs, Gulf of Mexico), Swift Energy New Zealand for their first operated joint venture in New
`Zealand, and others.
`• Developed Managed Pressure Drilling School and coordinated or facilitated over twenty sessions for
`operators and service companies, encompassing over 200 class participants.
`
`• Drilling Engineering School
`• Numerous Seminars
`
`1998 - Present
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`• Project Manager for AGIP KCO Closed-Hole Circulation Drilling Project in Kashagan Field,
`Caspian Sea, Kazakhstan. Developed operational procedures and training, facilitated risk
`assessment, and provided technical support for operations execution on site.
`• Project Manager for XPRONET, Inc. exploration well program in Hungary.
`• Developed specialized Drilling Technology Schools for TengizChevroil Corp. and Agip KCO in
`Kazakhstan, Agip in Milan, Italy, Shell in Malaysia, and ConocoPhillips in Houston, Texas.
`• Developed and presented a specialized Advanced Technology School (Horizontal/Multilateral
`Underbalanced) for Network of Excellence in Training (NExT) consortium.
`• Developed, coordinated and presented technical schools at Signa Engineering, Chevron Drilling
`Technology Center, and Client Locations around the world, including Managed Pressure Drilling,
`UnderBalanced Operations, Horizontal Operations, and Multilateral Technology.
`Senior Project Manager & Engineering Training Manager (1998–2000)
`Managed all facets of technology training schools, including material preparation, school agenda, and
`student solicitation and follow-up. Plan drilling programs and analyze technical problems associated
`with drilling wells. Provide litigation support in the form of expert witness testimony.
`• Planned a multiple-well program and programs for two wildcat wells in South Texas abnormal
`pressure areas for Esenjay Exploration, Inc., including AFE preparation, Drilling Program, and
`all drilling procedures. Managed operations to successfully execute all plans.
`• Developed plan and lead author for Underbalanced Operations: A Project Management
`Approach (826 page Manual) and school concentrating on field operations involved in all phases
`of underbalanced operations.
`• Developed Underbalanced Operations Seminar (3-day) for the Chinese Petroleum Society,
`Chinese National Petroleum Company (CNPC) and presented it to 22 Chinese petroleum
`companies in Beijing, China. The Chinese sponsor was awarded a "National Heroic Prize" by
`CNPC for introducing this technology to China.
`• Represent Texaco as technical liaison to Drilling and Completions Committee of the DeepStar
`deep-water consortium.
`• Provide general planning and analysis for various drilling operators.
`MAURER ENGINEERING INC., Houston, Texas
`Senior Drilling Engineer
`Managed major RD&D contracts with the U.S. Department of Energy, the Gas Research Institute, and
`the Drilling Engineering Association, including carrying out research, preparation of proposals, and
`solicitation of participants in joint industry projects, budgeting and scheduling, and reporting results.
`Total value of managed research as of year-end 1997, $2,950,000. Planned drilling programs and
`analyzed technical problems associated with drilling wells.
`• Planned first underbalanced drilling prospect in Colombia, including drillstring design,
`underbalanced and conventional drilling hydraulics analysis, casing design, torque and drag
`analysis, AFE preparation, and post-drill hydraulics analysis. Well came in at >7000 BOPD and
`11MMscfd.
`• Represent Texaco as technical liaison to Drilling and Completions Committee of the DeepStar
`deepwater consortium.
`• Developed and verified a PC-based computer program for calculating hydraulics of compressible
`drilling fluids.
` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`• Led U.S. Department of Energy project team in the development of a unique, lightweight
`incompressible drilling fluid having a density less than that of the base fluid used.
`• Primary engineer for project team identifying new drilling technologies for application in the
`Greater Green River Basin of SW Wyoming and Northern Colorado and determined impact of
`major oil company slim-hole drilling program in the area.
`• Originated novel application of plasma arc technology. Proposal pending before the U.S. DOE
`has the potential for a $750,000 contract to develop the concept.
`• Coordinated and co-authored 600-page Underbalanced Drilling and Completion manual for the
`Drilling Engineering Association.
`• Developed and delivered a successful Underbalanced Drilling and Completion School in the
`United States, Mexico, Canada, Venezuela, Colombia, Scotland, and Germany.
`EXXON CO., USA, Houston, Texas
`Senior Staff Engineer (1992–94)
`Managed all aspects of drilling oil and gas wells, including designing systems, preparing procedures,
`bidding/negotiating contracts, estimating costs, complying with governmental/environmental
`regulations.
`Initiated unique application of PDC bit technology on two-rig Gulf Coast drilling program,
`•
`reducing drilling time by 10%. Application adopted by other engineers, resulting in potential
`$600,000 savings per year.
`• Established use of prototype thermal treatment process for oil based drilling fluid cuttings.
`Saved $60,000 on mud system and won 1993 Earth Day Award from Utah Dept. of Natural
`Resources.
`• Developed re-entry procedures for Austin Chalk wells converting them to horizontal or adding
`horizontal sections. Advanced technological competitiveness saved an average of $150,000/well.
`• Managed well control situation on abnormally pressured gas well by involving all levels of
`company, contract, and consultant personnel. Prevented the loss of a $1.2 million investment
`and saved a producible wellbore.
`Senior Staff Engineer, Midland, Texas (1987–92)
`Managed all engineering aspects of exploration and large development drilling projects in the Rocky
`Mountains, West Texas and California.
`Initiated continuous improvement program on 79 well drilling and completion program,
`•
`increasing the drilling rate by 42%, decreasing costs by 19%. Drilled 54 wells faster than
`original target days, saving $1.9 million.
`• Designed procedures for 12 wildcat wells in Rocky Mountains and California at a cost of $32
`million. Resulted in drilling 4 record wells and saving over $5 million.
`• Originated request to the Bureau of Land Management in Washington, DC resulting in a change
`in Federal Regulations, which saved company a potential $150,000 per year.
`Senior Staff Engineer, Denver, Colorado (1985–87)
`Coordinated exploration drilling program, resolving technical/operational conflicts and concerns
`between the Midland Drilling Group and Denver Exploration Division.
`• Provided technical sales support to market remote wildcat well to potential operators. Final sale
`of wellbore salvaged $20 million investment.
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`1977 – 1994
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`• Developed criteria for scheduling start-up of drilling programs, resulting in 10-30% cost savings
`($60-200,000) per exploration well.
`• Designed and instituted seminar for geologists/geophysicists in cost estimating fundamentals,
`resulting in greater understanding of process and a savings of 2 man-months per year.
`Supervising Engineer, Midland, Texas (1982–85)
`Supervised three different drilling groups comprised of 5-9 engineers and 2-3 support staff.
`• Developed skills of three subordinates, resulting in their achieving personal goals of promotion
`to Supervising Engineer positions.
`Implemented field training program in basics of drilling operations. Trained six engineers in
`60% of budgeted time saving $40,000.
`• Coordinated six-rig drilling program with operations group to drill 350 wells in one field,
`reducing drilling time by 35% and saving over 600 rig days and $4.9 million.
`Assoc. Project Engr./Project Engr./Senior Project Engineer, Midland, Texas (1977–82)
`Managed reservoir, production, and drilling engineering aspects of oil and gas well field
`development, including reservoir description and management, economic evaluation, production
`facility design, well completions and remedial work, bid implementation, drilling system design, and
`regulatory compliance.
`• Recommended use of diamond bit/turbine combination in straight hole drilling of Anadarko
`Basin wells, saving $65,000/well.
`Initiated redevelopment of gas field resulting in 15% increase in oil production, 70% increase in
`gas production. Resulted in a rate of return of 30%.
`• Designed replacement water injection plant for secondary recovery lease in W. Texas. Reduced
`lease expense by $80,000 per year.
`PUBLICATIONS & PRESENTATIONS:
`Elmore, Robert J., Medley, George H., and Goodwin, Robert C., 2014: “MPD Techniques Optimize
`HPHT Well Control,” SPE 170887, presented at the SPE Annual Technical Conference and
`Exhibition, Amsterdam, The Netherlands, October 27-29.
`Medley, George, Tian, Shifeng, and Moore, Dennis, July 2014: Co-Authors of International Association
`of Drilling Contractors (IADC) Drilling Manual, 12th Edition, Chapter – “Drilling Hydraulics,”
`published by IADC (and published as a stand-alone ebook).
`Medley, George, P.E., Hannegan, Don, P.E., Rehm, Bill, and Graham, Reuben, July 2014: Co-Authors
`of International Association of Drilling Contractors (IADC) Drilling Manual, 12th Edition, Chapter –
`“Managed Pressure, Underbalanced and Air/Gas/Mist/Foam Drilling,” published by IADC (and as a
`stand-alone ebook).
`Medley, George, Elmore, Bobby, Nauduri, Sagar, and Goodwin, Bob, 2014: “Successfully Drilling
`Sidetrack #7 With MPD/UBD Combination After Six Failed Conventional Drilling Attempts,”
`SPE/IADC 168944, presented at the 2014 SPE.IADC Managed Pressure Drilling and Underbalanced
`Operations Conference and Exhibition, Madrid, Spain, April 8-9.
`Goodwin, Bob, Nauduri, Sagar, Medley, George, and Shipley, Kurt, 2014: “MudCap Drilling: New
`Variations, Drivers, Limitations, and Lessons Learned – Case Histories,” SPE/IADC 168956,
`presented at the 2014 SPE.IADC Managed Pressure Drilling and Underbalanced Operations
`Conference and Exhibition, Madrid, Spain, April 8-9.
` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`Nauduri, Sagar, Fortney, Kent, Medley, George, and Tian, Shifeng, 2014: “Dual Gradient Screening
`Tool: Depth Ration (DRx) Matrix Method,” SPE/IADC 168950, paper of note published for the
`2014 SPE.IADC Managed Pressure Drilling and Underbalanced Operations Conference and
`Exhibition, Madrid, Spain, April 8-9.
`*Medley, George, 2012: “Increased Level of Monitoring With MPD Reduces Non-Productive Time,”
`presented at The 21st Century Energy Technology Conference & Trade Show, sponsored by the
`Texas Alliance of Energy Producers, Houston, Texas, October 17-18, 2012.
`*Medley, George, 2012: “Enhanced Formation Pressure-Limit Detection Using Managed Pressure
`Drilling,” presented at the SPE Advanced Technical Workshop: Drilling Meets Formation
`Evaluation, Montgomery, Texas, June12-14, 2012.
`*Falk, Kristin and Medley, George, 2010: “Assessing Candidate Wells for MPD: Guidance from the
`IADC UBO/MPD Committee,” presented at the 2010 IADC World Drilling Conference and
`Exhibition, Budapest, Hungary, June 16-17.
`Nauduri, Sagar, Ph.D., Medley, George H., and Schubert, Jerome J., Ph.D., 2010: “MPD Candidate
`Identification: To MPD or Not To MPD,” IADC/SPE 130330, presented at the 2010 IADC/SPE
`Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, Kuala
`Lumpur, Malaysia, February 24-25.
`Tian, Shifeng, Medley, George H., and Stone, Charles R., 2009: “Understanding Yield Point: Effect on
`Pressure Surges Can Be Critical to Managing Deep, Difficult MPD Wells,” Drilling Contractor,
`July/August, pp.46-53.
`Nauduri, Sagar, Medley, George H., and Schubert, Jerome J., Ph.D., 2009: “MPD Beyond Narrow
`Pressure Windows,” IADC/SPE 122276, presented at the 2009 IADC/SPE Managed Pressure
`Drilling and Underbalanced Operations Conference and Exhibition, San Antonio, TX, Feb 12-13.
`Medley, George, and Moore, Dennis, 2008: Co-Authors of Managed Pressure Drilling, “Chapter Six –
`A Simplified Approach to MPD,” published by Gulf Publishing Company, pp. 143-154.
`Medley, George, and Nauduri, Sagar, 2008: Co-Authors of Managed Pressure Drilling, “Chapter Ten –
`MPD Candidate Selection,” published by Gulf Publishing Company, pp. 261-284.
`Goodwin, Robert, Medley, George H., and Reynolds, Patrick B.B., 2008: “Understanding MPD Complexity
`Levels,” Hart’s E&P, pp. 41-43, October.
`Medley, George H., Moore, Dennis, and Nauduri, Sagar, 2008: “Simplifying MPD – Lessons Learned,”
`SPE/IADC 113689, presented at the 2008 IADC/SPE Managed Pressure Drilling and Underbalanced
`Operations Conference and Exhibition, Abu Dhabi, UAE, January 28-29.
`Malloy, Kenneth P., Medley, Jr., George H., and Stone, C. Rick, 2007: “Taking Another Look at the
`Risk Profile for Air Drilling in Presence of Hydrocarbons,” (based on IADC/SPE 108357) Drilling
`Contractor, March/April, pp.66-70.
`Malloy, Kenneth P., Medley, Jr., George H., and Stone, C. Rick, 2007: “Air Drilling in the Presence of
`Hydrocarbons: A Time for Pause,” IADC/SPE 108357, presented at the 2007 IADC/SPE Managed
`Pressure Drilling and Underbalanced Operations Conference and Exhibition, Galveston, Texas,
`March 28-29.
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`Tian, Shifeng, Medley, George H., and Stone, Charles R., 2007: “Parametric Analysis of MPD
`Hydraulics,” IADC/SPE 108354, presented at the 2007 IADC/SPE Managed Pressure Drilling and
`Underbalanced Operations Conference and Exhibition, Galveston, Texas, March 28-29.
`Stone, Charles R., Medley, George H., and Reynolds, Patrick B.B., 2006: “Blending technologies:
`MPD, casing drilling can eliminate intermediate casing string,” Drilling Contractor, pp. 55-57,
`May/June.
`Medley, George H. and Reynolds, Patrick B.B., 2006: “Distinct variations of managed pressure drilling
`exhibit application potential,” World Oil, pp. 41-45, March.
`Medley, George and Stone, C. “Rick”, 2004: “MudCap Drilling When? Techniques for Determining
`When to Switch From Conventional to Underbalanced Drilling,” SPE-IADC 91566, presented at the
`2004 SPE/IADC Underbalanced Technology Conference and Exhibition held in The Woodlands,
`Texas, U.S.A., 11–12 October.
`Stone, Charles R. and Medley, George, 2004: “The benefits of light annular mudcap drilling in
`naturally fractured formations,” Offshore, pp. 30-33, July.
`Colbert, John W. and Medley, George, 2002: “Light Annular Mudcap Drilling – A Well Control
`Technique for Naturally Fractured Formations,” SPE 77352, presented at the 2002 SPE Annual
`Technical Conference and Exhibition held in San Antonio, TX, 29 September – 2 October.
`McLennan, John, et al (and Medley, George H.), 2002: Underbalanced Completion Manual, Gas
`Research Institute, Chicago, IL, January.
`McGowen III, Harold E. and Medley, Jr., George H., 2001: “Toward a Higher Level of Multilateral
`Completion,” American Oil and Gas Reporter, pp. 57-69, February.
`Tian, Shifeng and Medley, George, 2000: “Re-evaluating Hole Cleaning in Underbalanced Drilling
`Applications,” paper presented at the International Association of Drilling Contractors (IADC)
`Underbalanced Drilling Conference and Exhibition, held in Houston, Texas, August 28-29.
`McGowen, III, Harold E., and Medley, Jr. George H., 2000: “Applicability of Underbalanced Drilling
`to Multilateral Junctions,” paper presented at the IADC Underbalanced Drilling Conference and
`Exhibition, held in Houston, Texas, August 28-29.
`Colbert, John W., Medley, George H., and Stone, Charles R., 2000: “Mud Cap Drilling – A Naturally
`Fractured Formation Drilling Technique,” paper presented at the IADC Underbalanced Drilling
`Conference and Exhibition, held in Houston, Texas, August 28-29.
`Medley, George H., 2000: “The State of Underbalanced Operations Technology,” paper presented at
`the American Association of Drilling Engineers (AADE) Annual Technology Forum - Best
`Available Practical Drilling Technology- The Search Continues, held in Houston, Texas, February
`9-10, 2000.
`Tian, Shifeng, Medley, George H., and Stone, Charles R., 1999/2000: “Optimizing Circulation While
`Drilling Underbalanced,” paper presented at the IADC Underbalanced Drilling Conference and
`Exhibition, The Hague, The Netherlands, October 27-28, 1999, published in World Oil, June 2000.
`Medley, Jr., George, Craig, Daniel, Deskins, W. Gregory, Harkrider, John, 1999: Field Application of
`Slim Hole Drilling and Completion Technology, GRI-00/027, final report (contract number 5094-
`210-3021), published by the Gas Research Institute, Chicago, IL, December.
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`Medley, George H., Tian Shifeng, and McGowen, Harold, 1999: “Fulfilling Technical, Educational
`Needs Key to UBO’s Expansion,” American Oil and Gas Reporter, pp. 58-68, August.
`Medley, George H., Stone, Charles R., Gonzales, Ricardo, and McGowen, Harold, 1999: “UBO
`Technology Expands Horizontal’s Success,” American Oil and Gas Reporter, pp. 46-56, July.
`Medley, George H., 1999: “Advances Drive Synergies Between Technologies,” American Oil and Gas
`Reporter, pp. 54-63, January.
`Medley, George H., Stone, Charles R., Colbert, John W., McGowen III, Harold E., Haston, Jerry E., and
`Krauhs, John W., 1998: A Project Management Approach to Underbalanced Operations, Signa
`Engineering Underbalanced Operations Technology School, Houston, Texas, October.
`Medley, George H., 1998: “Shallow Water Flow: A Technology Update”, Deepwater Technology
`(supplement to World Oil), pp. 37-47, August, and presented at World Oil’s Deepwater Technology
`Symposium held in Houston, Texas, September 8-10.
`Medley, George H., 1998: “Shallow Water Flow Technology Update”, OTC 8731, presented at the
`Offshore Technology Conference in Houston, Texas, May 4-7.
`Medley, George H., et al, 1997: “Field Application of Lightweight Hollow Glass Sphere Drilling
`Fluid”, SPE 38637, paper presented at the 1997 SPE Annual Technical Conference and Exhibition in
`San Antonio, Texas, October 5-8 and Journal of Petroleum Technology, pp.1209-1211, November.
`Medley, George H., 1997: “Applying Advanced Technology to Improve Productivity”, New Petroleum
`Technology and Current Plays in the Rocky Mountains, handbook published by the Rocky Mountain
`Association of Geologists, October.
`Medley, George H., 1997: “Perforacion Baja Balance (Underbalanced Drilling: Advances and
`Applications”, presented at the Pemex Primer Foro Tecnologico De Perforacion Y Mantenimiento
`De Pozos in Cd. Del Carmen, Campeche, Mexico, June 25.
`Medley, George H., Shook, R. Allen, and Hansen, John T., 1997: “State-of-the-Art Slim-Hole Drilling
`in the Green River Basin in Wyoming: A Three Well Case History”, SPE 38361, presented at the
`1997 SPE Rocky Mountain Regional Meeting in Casper, Wyoming, May 18-21.
`Nations, Joe F. and Medley, George H., 1997: “DeepStar’s Evaluation Of Shallow Water Flow
`Problems in The Gulf Of Mexico,” paper presented at Offshore Technology Conference, Houston,
`TX, May 5-8.
`Medley, George H., et al, 1997: “Development and Testing of Advanced Drilling Products,” paper
`presented at the US Department of Energy Natural Gas Conference in Houston, TX, March 24-27.
`Liu, Gefei and Medley, George H., 1997: “Advanced Compressible Fluid Model Accounts For
`Hydraulic Behavior While Drilling Underbalanced”, paper presented at the API/ASME Energy
`Week ‘97 Conference and Exposition held in Houston, TX, January 28-30.
`Medley, George H., Deskins, W. Gregory, and Duda, John R., 1996: “Strong Growth Projected for
`Underbalanced Drilling,” Oil and Gas Journal, pp.67-77, September 23.
`Medley, George H., Rehm, William, and Chaffin, Michael, 1996: Underbalanced Drilling and
`Completions Manual, Drilling Engineering Association, Houston, Texas, September.
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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`Liu, Gefei and Medley, George H., 1996: “Advanced Foam Computer Model Helps in Analysis of
`Underbalanced Drilling,” Oil and Gas Journal, pp.114-119, July 1, and presented at the API/ASME
`Energy Week ‘96 Conference and Exposition held in Houston, TX, January 29-31.
`Medley, George H., et al, 1995: Development and Testing of Underbalanced Drilling Products, Phase I
`Final Report (contract number DE-AC21-94MC31197), published by the US Department of Energy-
`Morgantown Energy Technology Center, Morgantown, WV, September.
`Medley, George H., Maurer, William C., and Garkasi, Ali Y., 1995: “Use of Hollow Glass Spheres for
`Underbalanced Drilling Fluids,” SPE 30500, presented at the 1995 SPE Annual Technical
`Conference and Exhibition held in Dallas, TX, October 22-25.
`Medley, et al, 1995: “Development and Testing of Underbalanced Drilling Products,” paper presented
`at Department of Energy Natural Gas RD&D. Contractors Review Meeting, Baton Rouge, LA, Apr
`4-6.
`McLane, M. A. and Medley, G. H., 1993: "A Practical Approach to Drilling-Fluid Surveillance and
`Management", SPE Drilling and Completion, December.
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` 2 Northpoint Dr.• Suite 700 • Houston, Texas 77060 • Main:(281) 774-1000 • Fax:(281) 774-1098 • Email:signa@signa.net • www.signaengineering.com
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