In Russia, Smith drill bits set new records while drilling the vertical intervals of exploration wells for Wolgademinoil in the Avilovskoe field. In the 11 5/8-in section of one well, Smith steel body PDC bits with premium cutters increased rate of penetration (ROP) five-fold, and footage by 350%, compared to the best offset wells. In the same well, but in the 15 1/2-in section, ROP was doubled and the section completed in one run while the footage drilled increased by 130%.
In the Caspian Sea, Schlumberger Drilling & Measurements introduced the PowerDrive Xceed* rotary steerable system for LUKOIL-Nizhnevolzhskneft on an offshore extended reach drilling project in the Korchagina oilfield. PowerDrive Xceed technology enabled the efficient drilling of the world’s longest 9 1/2-in section and a corresponding saving of two days compared to the well construction plan.
In Angola, Drilling & Measurements technologies were deployed for Cabinda Gulf Oil Company to evaluate a development well in a deepwater channelized reservoir system. StethoScope* formation pressure-while-drilling and EcoScope* † multifunction logging-while-drilling technologies were used for petrophysical data evaluation and to assess reservoir depletion magnitude and connectivity. The combination of petrophysical data, azimuthal density images and mud log data, led to the identification of an additional 30 ft of low resistivity pay which enabled the operator to deepen the overall completion and increase the perforated interval. In addition to increasing the reserves, the Drilling & Measurements technologies provided operational efficiency through higher data acquisition rates, which led to a significant reduction of non-productive time and a cost saving to the operator of approximately 60 hours of rig time.
In South Mexico, Schlumberger IPM and Drilling Group Technologies introduced the TURBODRILLING application for Pemex on high-compressibility rock formations. The combination of Drilling Tools & Remedial Neyfor* turbodrilling systems with customized Smith hybrid and impregnated bits was able to drill effectively and build angle on a well interval consisting mainly of compressible mudstone with up to 40% abrasive chert nodules. The well interval was drilled in less than 211 hours at an average rate of penetration close to 7 ft/hr, saving Pemex approximately 96 drilling hours compared with conventional drilling systems.