The staff at Pure Earth Resources has experience in many US unconventional plays including, but not limited to:

Our international experience includes work on the following continents:























Our Experience sets us apart


Working oil & gas professionals with practical experience and a track record of successful exploration and development.  Increasing our clients production and reserves in the most efficient manner possible is our primary goal.

  • Increased production and reserves in a major Devonian shale play by an order of magnitude by improving target selection, correcting lateral wellbore azimuth, and appropriate completion design
  • Proved up several million barrels of oil in a conventional Mississippian carbonate play using state-of-the-art mapping techniques and reservoir characterization
  • Successfully extended and developed a major Mississippian shale play 40 miles from its known core area
  • Identified, mapped, and successfully drilled an overlooked, behind-pipe tight Pennsylvania oil play
  • Discovered two deeper conventional pays (Devonian and Ordovician) below existing oil field
  • Discovered an overpressured Pennsylvanian incised channel play 5 miles from existing production
  • Increased production and reserves in a conventional Pennsylvanian gas play by changing development strategy
  • Increased reserves in a shallow, low pressure, open fracture Devonian shale play by approximately 30% with changes in the completion strategy
  • Remapped a Devonian shallow oil/gas reservoir using sequence stratigraphy concepts that extended the play by adding over 60 new wells
  • Mapped Miocene channels on a 3D seismic survey to identify sweet spots and constrain reservoir dimensions
  • Determined the core area of a Mississippian shale oil play by applying sequence stratigraphic analysis in mapping the reservoir facies
  • Extensive coal-bed methane exploration and development in the San Juan basin, several Rocky Mountain basins, Arkoma basin, western Canada, Black Warrior basin, Illinois basin, Alaska, China, South America, India, and Australia
  • Correlated fluvial and transitional marine facies to identify reservoir sands in a heavy oil belt in South America.  The reservoir characteristics were provided to the engineering team for modeling purposes.




THESIS/PUBLICATIONS/PAPERS/PRESENTATIONS


Lindell Bridges


Bridges, L. C., 1982; Determination of Optimum SAR Sensor Configuration from Analysis of Geologic Terrain Models; unpublished M.S. Thesis, University of Arkansas, Fayetteville, AR., 224p, thesis sponsored by NASA.


MacDonald, H., L.C. Bridges, W.P. Waite, and V.H. Kaupp 1982; Shuttle Imaging Radar-Geologic Application; in Proceedings of the American Society of Photogrammetry, Fall 1982 Convention, Miami, Fl. pp. 272-81

MacDonald, H., W.P. Waite, L.C. Bridges, V.H. Kaupp and M. Storm, 1982; Evaluation of SIR-A Space Radar for Geologic Interpretation: United States, Panama, Columbia and New Guinea; ARSL TR 83-2, Arkansas Remote Sensing Laboratory, University of Arkansas, Fayetteville, AR, 74p.

Ratchford, M.E., L.C. Bridges, D. Jordan, W.G. Dow, A. Colbert, D.M. Jarvie, 2006; Organic Geochemistry and Thermal Maturation Analysis Within the Fayetteville Shale Study Area  Eastern Arkoma Basin and Mississippi Embayment regions, Arkansas; Arkansas Geological Commission, Informational Circular 37, CD-Rom.

Bridges, L.C., 2009; Sequence Stratigraphy of Shale Plays, presented at Platts Marcellus Conference, Pittsburgh, Pennsylvania.

Bridges, L.C., 2010, Geology of Shale Target Zones & Their Relationship to Drilling & Completions; presented at the Shale Gas Drilling & Completions Conference, Houston, Texas.

Bridges, L.C., 2010, Shale Target Zone Geology; presented to the Pennsylvania Geological Survey & the Pennsylvania Council of Professional Geologists, Harrisburg, Pennsylvania.

Bridges, L.C., 2010, Horizontal Drilling and Geology of Shale; presented at the Hydraulic Fracturing: Challenges to Shale Gas Production Conference, Denver, Colorado.

Bridges, L.C., 2011, U.S. Shale Case Studies-Marcellus; Shale Gas World USA 2011; Fort Worth, Texas.

Bridges, L.C., 2011, Tight Oil from Shale... or Something Like That; presented at the Tight Oil From Shale World Congress, Denver, Colorado.

Bridges, L.C., 2011, Strategies to Identify 'Sweetspots' in Shale Gas Reservoirs; presented at the Developing Economically Viable Shale Gas Production in Asia Conference, Shale Gas Asia 2011, New Delhi, India.

Bridges, L.C., 2011, Basic Tools for Shale Exploration; American Association of Petroleum Geologists, e-Symposium, Tulsa, Ok.

Bridges, L.C., 2011, Management of Shale Plays, Thoughts to Ponder; Gas Technology Workshop, American Association of Petroleum Geologists, Baltimore, Md.

Bridges, L.C., 2011, Shale Plays of North America, Compare and Contrast; presented at the Shale Gas Results, Europe, Warsaw, Poland.

Bridges, L.C., 2012, Basic tools for shale exploration; course present to Pennsylvania Council of Professional Geologists, Cranberry Township, Pa.

Bridges, L.C., D.R. Blood, L.L. Alexander, 2012; Geology of shale oil plays in North America, current and future; International Symposium on Shale Oil Resources and Exploration Technology, Wuxi, China.

Bridges, L.C., 2013; Blood from a Turnip, Getting Oil from Shale; Tight Oil Forum, Houston, Tx.

Bridges, L.C., 2013; Assessment of Shale Gas Plays, U.S. 
 China Gas Training Program, Chengdu, China.

Bridges, L.C., 2013; Basic Tools for Shale Exploration, North China Electric Power University, Beijing, China.


Laurel Alexander

Alexander, L.L., 2000, Stratigraphic study of the PL 19-3 Area, Bohai Bay, China: Phillips Petroleum Internal Report #16443.

Alexander, L.L., T.A. McGilvery, and M.A. Olson, 1999, Stratigraphy and reservoir geometry of the Bare 53 Field, Hamaca Project, Venezuela: Phillips Petroleum Internal Report #16450.

Olson, M.A., T.A. McGilvery, and L.L. Alexander, 1999, Stratigraphy and reservoir geometry of the H and M Blocks, Hamaca Project, Venezuela: Phillips Petroleum Internal Report #16451.

Alexander, L.L. and J.W. Handschy, 1998, Fluid flow in a faulted reservoir system: fault trap analysis for the Block 330 Field in Eugene Island South Addition, Offshore Louisiana: AAPG Bulletin, v. 82, no. 3, p. 387-411.

Alexander, L.L. and P.B. Flemings, 1995, Geologic evolution of a Pliocene-Pleistocene salt-withdrawal minibasin: Eugene Island Block 330, Offshore Louisiana: AAPG Bulletin, v. 79, no. 12, p. 1737-1756.