Deepwater Development Studies

At Netherland Sewell we have numerous professionals with focused experience in deepwater depositional environments who have been involved in exploration studies, reserves estimation and certification, development planning, detailed field studies, and regional studies. In addition to the extensive shelf, deep shelf, and deepwater experience obtained while working at NSAI, our personnel typically have several years of experience within a major E&P company. This experience includes producing property management involving field surveillance, remedial workovers, delineation and development drilling proposals, and major field studies in district reservoir, division, and new ventures teams.

To talk to an expert regarding a Deepwater evaluation please call Joe Spellman or Dan Walker in our Dallas office at 214-969-5401, or Ashley Smith or John Cliver in our Houston office at 713-654-4950, or click here for an on-line option.

Our team has reviewed and evaluated over 1,000 shelf and 65 deepwater Gulf of Mexico (GOM) blocks for numerous operators and interest holders. We have also worked on some of the most technically challenging deepwater projects around the world. These evaluations were performed for acquisitions, divestitures, financing, equity, company financials, and annual reserves evaluations. Many were fully integrated studies of multiblock deepwater areas including 3-D seismic interpretation; petrophysical analysis; geocellular modeling; fluid property analysis; analysis of capital, operating, and abandonment costs; and reservoir modeling of all types for development planning and determination of reserves across all categories.

Gulf of Mexico

Listed below is a brief synopsis of our deepwater GOM project experience:

  • Have reviewed and evaluated a majority of the deepwater GOM fields, during various stages of development, for multiple clients. Some of the fields are Aconcagua, Alabaster, Allegheny, Amberjack, Arnold, Atlantis, Auger, Baldpate, Black Widow, Blind Faith, Bison, Bud, Bullwinkle, Busch, Camden Hills, Cervesa, Cervesa Ligera, Cinnamon, Conger, Cognac, Cooper, Constitution, Devil’s Tower, Diana, Dove, Ewing Banks 826, Falcon, Front Runner, Garden Banks 236, Garden Banks 386, Garden Banks 388, Genesis, Glider, Green Canyon 29, Gunnison, Jolliett, King Kong, Lafitt Pincay, Leo, Lena, Mad Dog, Magnolia, Marco Polo, Medusa, Nansen, Neptune, Pabst, Pluto, Pompano, Popeye, Ram Powell, Red Hawk, Seattle Slew, Snapper, Sunday Silence, Swordfish, Tahiti, Tahoe, Thor, Ursa, Vancouver, and Zinc.
  • Conducted reservoir engineering and geological field studies for 53 offshore fields on behalf of a major oil company. These studies resulted in recommendations for workover, drilling, and enhanced oil recovery projects.
  • Conducted a geophysical, geological, and engineering study while serving as the third-party expert in an equity determination of the deepwater Ursa project.

Listed below are a few selected international deepwater projects completed by our technical staff:

  • Conducted an independent audit of operator’s field development plan offshore Angola (in water depth of 1,300 meters) on behalf of Sonangol. Performed independent probabilistic assessment of in-place hydrocarbons, petrophysical evaluation, and audit of operator’s reservoir simulation model. Made recommendations on alternative development plans to optimize reservoir sweep efficiency.
  • Completed annual geoscience, petrophysical, and reservoir engineering evaluations of the offshore Ceiba Field on behalf of Triton Energy Corporation. This field is located on the Equatorial Guinea Continental Slope in water depths of 100 to 1,200 meters. Involved 3-D seismic interpretation integrated with well control, petrophysical analysis, and fluid property analysis. Reservoir simulation was used to model this fast-track, subsea well development which flows to an FPSO.
  • Conducted a reserves certification of the Chinguetti Field, offshore Mauritania, on behalf of Lenders led by ANZ Bank. The certification was used for financing the subsea-FPSO oil development located in a water depth of 800 meters. Work included interpreting 3-D seismic data, incorporating well control and well test information, and modeling various development plans with reservoir simulation. Analysis also included operations verification of the capital expenses, operating expenses, and development timing for the project.
  • Conducted a comprehensive reserves certification of the Azeri-Chirag-Deepwater Gunashli (ACG) field complex located in the South Caspian Sea to support financing of the multi-phase field development and the construction of the 1 million barrel-per-day capacity Baku-Tbilisi-Ceyhan oil pipeline. Integrated geology, geophysics, petrophysics, and engineering analysis to estimate the original hydrocarbons-in-place for 7 targeted oil reservoirs. Development platforms are located on the seafloor ridge and wells are drilled directionally to deepwater reservoirs in water depths of 100 to 400 meters. Incorporated reservoir simulation to estimate the recoverable reserves and the associated production profiles for each of the various development phases.
  • Conducted a reserves certification of the Petrobras-operated Barracuda and Caratinga Fields in the deepwater region of the Campos Basin, Brazil. These 2 fields lie in 600 to 1,400 meter water depths and produce from up to 7 different Oligocene to Eocene age turbidite reservoirs. Work consisted of an independent volumetric evaluation to estimate the original oil-in-place and an engineering analysis incorporating reservoir simulation of the existing pilot production and the full field development plan to estimate the ultimate recoverable reserves in each of the reservoirs.