Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Giving Life to a Marginal Field: Durango Reservoir Simulation


Published on

SIPES Houston: 2015 CES

Published in: Business
  • Login to see the comments

  • Be the first to like this

Giving Life to a Marginal Field: Durango Reservoir Simulation

  1. 1. SIMULATION – GIVING LIFE TO A MARGINAL FIELD SIPES – September 2015 281.558.7998
  2. 2. DURANGO RESOURCES HISTORY  1980: Founded Swanson Consulting  Provided industry-leading reservoir description (30+ yrs)  Geological, geophysical, and engineering models, original and remaining hydrocarbons in place maps, reserves analysis and classification, depletion plans, economics, risk analysis, A&D due diligence  1985: Founded Stratamodel  Created the first commercially available 3D geocellular modeling software in the industry  Merged with Landmark / Halliburton in 1994  1998: Founded Durango Resources Corporation  Increased reserves consistently through detailed geologic mapping and the use of simple simulation technology (ReservoirGrail)  1999: Founded GrailQuest Corporation  Developed ReservoirGrail, the first commercially available volumetric balancing reservoir simulation software © Durango Resources Corp. 2015 2
  3. 3. GIVING LIFE TO A MARGINAL FIELD Are there any left-behind reserves? Where are these left-behind reserves? What is the most economic way to produce them? These questions can best be answered with simulation We need to discover how the fluids have migrated in the reservoir through time in order to find answers to these questions © Durango Resources Corp. 2015 3
  4. 4. METHODOLOGY  Build your reservoir model (for each separate reservoir zone)  Gross reservoir thickness map  Net reservoir thickness map  Net pay thickness map  Structure map  Collect and organize your historical production data  Allocate field / lease / tank data to individual wells  Allocate individual well production by zone  Check for fluid level data and reservoir pressure tests to verify your reservoir communication assumptions  Run a simple volumetric-based simulation  Doing this manually is possible if the reservoir is small and simple  For most fields, you will need to use a simple volumetric simulation program like ReservoirGrail  Make adjustments to your reservoir model (geology) or historical production allocations based on how well the simulation matches your production history © Durango Resources Corp. 2015 4
  5. 5. WEST TEXAS WATERFLOOD CASE STUDY  Located in Tom Green County near San Angelo  Discovered in 1979 at ~3,400ft tvd  Acquired in early 2000’s  7 producers  5 injectors (3 of them were converted from producers)  Limey sandstone (probably a shelf-edge sand)  Avg pay thickness = 8ft  Avg porosity = 18.5 pu  Avg Initial Oil Saturation = 72%  OOIP ~2.3MMSTB  Current recovery ~1MMSTB (~44% of OOIP) © Durango Resources Corp. 2015 5 Original Net Pay Map 1,000 ft
  6. 6. RESERVOIR MODEL Net Reservoir Thickness (ft) – 5ft Contours Structure (SSTVD) – 10ft Contours © Durango Resources Corp. 2015 6 N N
  7. 7. HISTORICAL PRODUCTION  Sorted through well files to allocated field- wide and tank battery production to individual wells based on historical test data  Current status:  1 producer (20bopd)  2 injectors (injecting 2200bwpd combined)  1% oil cut © Durango Resources Corp. 2015 7
  8. 8. SIMULATION RESULTS Firstly, our current reserves were confirmed © Durango Resources Corp. 2015 8 Dashed green = modeled oil production Solid green = forecasted reserves Royal blue = water production Teal = water injection WATCH THE VIDEO ON THIS SLIDE ON YOUTUBE
  9. 9. SIMULATION RESULTS Secondly, we identified remaining waterflood movable oil and booked proved, undeveloped reserves © Durango Resources Corp. 2015 9 Additional proved undeveloped reserves (80MSTB) Planned injector location WATCH THE VIDEO ON THIS SLIDE ON YOUTUBE
  10. 10. CONTACT 281.558.7998 1147 Brittmoore Rd Ste. 1 Houston, TX 77043 10© Durango Resources Corp. 2015