Executive Summary

Carl J. Thaemlitz, Halliburton

Welcome to the September issue of SPE Drilling & Completion. For many of us, the summer holiday season is drawing to a close now as we approach the autumnal equinox. This season brings with it one of my favorite events, the SPE Annual Technical Conference and Exhibition. With 52 technical sessions--11 of which are on the theme of Drilling and Completions--it is sure to offer topics of interest to all.

For those interested in training during the conference, the SPE will offer three sessions of the popular course How To Write A Technical Paper. This event is offered free of charge and covers the basics of how to write a good proposal and a great paper. The session also includes advice on how to prepare an excellent presentation and what it takes to put a paper in its best condition for peer review. If you are interested in becoming a technical editor, or if you are a technical editor and you would like to attend a refresher course on the role of the reviewer process, the Technical Editor Workshop is available to you as a complimentary event. To preregister for these events, you can send an email to peer@spe.org or visit the ATCE 2013 Registration page for more information.

And now, on to the papers.

Completion Operations and Optimization

The first of our completions papers addresses the evaluation of standalone screens while challenging some of the thoughts around production screen engineering choices. Unraveling the Myths Associated With Selecting Standalone Screens and a New Methodology for Sand-Control Applications presents modeling for the systematic comparison of the performance of various screens under different test conditions with the use of entire particle size distributions of the formation sands.

The application of multistage hydraulic fracturing stimulation treatments within high-pressure/high-temperature (HPHT) wells can challenge the mechanical integrity of casings by the actions of thermal expansion and contraction. Unique Solution to Repair Casing Failure in a HP/HT Wellbore Allows for Successful Multistage Stimulation Treatment in an Unconventional Reservoir describes a method of repair that returns damaged casing to satisfactory integrity while maintaining isolation between fracturing stages.

Understanding and controlling hydraulic fracture geometry with the aid of a method for distributed temperature sensing lies at the heart of Interpreting Uncemented Multistage Hydraulic-Fracturing Completion Effectiveness By Use of Fiber-Optic DTS Injection Data. Attributable insights gained are a better understanding of near-wellbore fracture complexity, size of the stimulated interval, and the quality of stage isolations.

Drilling Operations and Optimization

New insight into the occurrences of bit whirl, reverse whirl, and stick-slip phenomena are proposed in our next paper, Downhole Measurement and Monitoring Lead to an Enhanced Understanding of Drilling Vibrations and Polycrystalline Diamond Compact Bit Damage. A newly available in-bit vibration-monitoring device is presented along with evidence of performance from field trials.

Is There a Place for High-Reliability Organizations in Drilling? The author presents a compelling case through a review of high reliability organization theory and suggests methods in which its principles might be applied to the management of drilling operations. Insights on how the drilling industry may strengthen the organizational aspects of the business and integrate a new approach into its selection, training, and competency assessment programs for its people are also presented.

Wellbore mechanical friction attributable to pipe rotation or torque and drag plays a significant role in drilling operations. A method for estimating these effects upon the downhole temperatures of drilling fluids is presented in Analytical Model To Predict the Effect of Pipe Friction on Downhole Fluid Temperatures. The model has applied to two different field cases, one for a deviated well and the other for a horizontal well. The downhole temperature profiles calculated are validated by comparison with field data measured by measurement while drilling tools.

Our final paper, Study on the Volumetric Behavior of Base Oils, Brines, and Drilling Fluids Under Extreme Temperatures and Pressures, addresses the issue of predicting the downhole hydrostatic pressure profiles of wellbores accurately. Pressure-volume-temperature data and correlation coefficients for drilling fluid components are presented, along with a demonstration of calculations for equivalent static fluid densities and wellbore hydrostatic pressure profiles. The reported contributions help to extend our ability to predict drilling fluid densities and hydrostatic pressures under extreme temperatures and pressures.