Executive Summary

Dean Wehunt, Chevron Business Development

As I write this summary in early October, it appears that the long and hot Houston summer is over. As a lifelong Texan, an (American) football fan, and a petroleum engineer, autumn is my favorite time of the year for many reasons.The forecast for the SPE Annual Technical Conference and Exhibition in San Antonio calls for cooler weather,excellent local cuisine, many presumably excellent technical papers, honors for deserving members of our Society, catching up with old friends, and meeting new ones. I said "presumably excellent" because the new papers will not yet be peer-reviewed. To fully appreciate SPE's quality control efforts, see Curtis Cheatham's Executive Summary in the September 2012 edition of SPE Drilling & Completion. For more information about what papers are good candidates for peer review, or to learn how to submit a paper, please see http://www.spe.org/authors/peer.php. To apply for the technical editorial team, see https://www.spe.org/forms/gen/volunteer_erc.htm.

This edition of SPEPO contains three fracturing-technology papers, five flow-assurance papers, and two papers on well performance.The first fracturing paper,Role of Stress Reorientation in the Success of Refracture Treatments in Tight Gas Sands, presents a model to calculate the extent of stress reversals caused by mechanical and poroelastic stress effects, and the model is validated using field data. In  Fracture-Stimulation Diagnostics in Horizontal Wells Using Distributed-Temperature-Sensing Technology, the authors use a hypothetical example to demonstrate the capability to quantitatively analyze distributed-temperature-sensing data for fracturing applications. The final fracturing paper, Theoretical and Experimental Modeling of Residual Gel Filter-Cake Displacement in Propped Fractures, aids the industry's ability to model gel filter-cake deposition and also to remove it.

Next, we have five flow-assurance papers. The author of Wax-Deposition Forecast compares and discusses four different models of the wax-deposition process, and shows how to select which model is best for a particular application. A Novel Technique for Monitoring Hydrate Safety Marginshowcases the authors' technique to identify the hydrate safety margin and optimize hydrate inhibitor programs using the conductivity and acoustic velocity of aqueous produced fluids. In Meeting the Challenges in Downhole Scale Control for High-Water-Production Horizontal Wells in an Environmentally Sensitive Part of the Norwegian North Sea, the authors describe a practical program to address scaling for challenging high-water-cut wells across the full cycle of inhibitor selection, laboratory testing, field application, and performance monitoring. After previously addressing phosphonate inhibitors in our last issue of SPEPO, another group of authors follows up with The Effects of Barium Sulfate Saturation Ratio, Calcium, and Magnesium on the Inhibition Efficiency--Part II: Polymeric Scale Inhibitors. The authors of Red vs. Green Scale Inhibitors For Extending Squeeze Life--A Case Study From the North Sea, Norwegian Sector--Part IIcompare their laboratory predictions and actual field results and also demonstrate the ability to successfully substitute a more environmentally friendly product.

Finally, we have two well-performance papers. The authors of Experimental Study of Two-Phase Performance of an Electrical Submersible Pump Stage continue to advance our industry's ability to more accurately forecast the performance of ESPs.In Introducing a New Correlation for Multiphase Flow Through Surface Chokes With Newly Incorporated Parameters , the authors present a new critical flow choke correlation incorporating temperature and basic sediment and water data. The new correlation greatly reduces average absolute error compared to previous methods, and the paper provides data that others may be able to use for further advances in this area.

Here are some recent peer-reviewed paper titles that may interest SPEPO readers.

September 2012 SPE Journal:

  • 144007,"Acidizing-Induced Damage in Sandstone Injector Wells: Laboratory Testing and a Case History," A.M. Al-Mohammad, M.H. Alkhaldi, S.H. Al-Mutairi, and A.A. Al-Zahrani
  • 142224, "Development of a Transient Mechanistic Two-Phase Flow Model for Wellbores," Mahdy Shirdel and Kamy Sepehrnoori

September 2012 Journal of Canadian Petroleum Technology:

  • 146087, "A Comparison of Polymer Flooding With In-Depth Profile Modification," R.S. Seright, Guoyin Zhang, S Olatokunbo O. Akanni, and Dongmei Wang
  • 157950, "Validation of Predicted Cumulative Sand and Sand Rate Against Physical-Model Test," H. Rahmati, A. Nouri, H. Vaziri, and D. Chan

October 2012 Oil and Gas Facilities:

  • 157302, "Experimental Study of 3% Cr Tubing Steel in CO2 and CO2/H2S Corrosion Environment," Wei Yan, Jingen Deng, Xingliang Dong, Chunyang Zhang, and Wenliang Li
  • 160578, "Hydrate Risk Assessment and Restart-Procedure Optimization of an Offshore Well Using a Transient Hydrate Prediction Model," L.E. Zerpa, E.D. Sloan, C.A. Koh, and A.K. Sum

September 2012 SPE Drilling & Completion:

  • 143731, "New Analytical and Statistical Approach for Estimating and Analyzing Sand Production Through Wire-Wrap Screens During a Sand-Retention Test," Rajesh A. Chanpura, Selcuk Fidan, Somnath Mondal, Jamie S. Andrews, Frederic Martin, Richard M. Hodge, Joseph A. Ayoub, Mehmet Parlar, and Mukul M. Sharma

And finally, here are a pair of new meeting papers that may be of interest to SPEPO readers from the 2012 SPE Hydrocarbon Economics and Evaluation Symposium in Calgary, and that are now available fromOnePetro:

  • 158918, "The Bakken: Utilizing a Petroleum-System-Based Approach To Optimally Exploit One of the World’s Largest Oil Deposits," L. Alcoser, W. Ketcham, A. Ovalle, and M. Parsons
  • 159683, "Has the Economic Stage Count Been Reached in the Bakken Shale?" Jason Baihly, Raphael Altman, and Isaac Aviles