Thank you, Simon. Schlumberger first quarter revenue of $8.12 billion decreased 4% sequentially, but increased 45% year-on-year. The impacts of the geopolitical events in North Africa and the Middle East, as well as severe weather in the U.S. and Australia impacted all 3 product groups and represented around half of the sequential decrease in total Oilfield Services revenue. Looking at the product groups, Reservoir Characterization sequential revenue was severely impacted by the geopolitical events at WesternGeco Q-Land, Testing Services and our Wireline activity the most. In addition to this, WesternGeco revenue decreased following the fourth quarter surge and multi-client sales in the U.S. Gulf of Mexico even though revenue increased in Marine due to a more favorable activity mix. SIS revenues fell sharply in all areas from seasonally lower software sales. Casting revenue also fell due to less product sales, lower activity in Latin America and East Asia and due to the winter slowdown in Russia. Wireline revenue was flat sequentially as strong winter activity in Canada offset the impact of the geopolitical and weather events. For the Drilling group, the sequential drop in revenue was primarily caused by the geopolitical events and excluding this impact, revenue actually increased for the group. IPM Well Construction revenue increased on strong activity growth in Iraq, Mexico and Russia. Drilling and Measurements revenue decreased from lower activity and pricing in Europe, CIS and Africa and the completion of offshore exploration project in Australia, Papua New Guinea, but this was partly offset by the return of some deep water work in the U.S. Gulf of Mexico and by an increase in activity in Latin America and Russia. M-I SWACO show continued strong activity in North America, but overall, revenue decreased due to seasonally lower product sales, the weather in Australia and delayed projects in Europe, CIS and Africa. In Reservoir Production, revenue fell sequentially largely due to the impact of the geopolitical events in North Africa and the Middle East, and due to severe weather in the U.S. and in Australia. Excluding these impacts, the production group revenue increased as higher pricing and strong demand for Well Services technologies in North America more than offset the IPM gain share payout in North America from the prior quarter and the seasonally lower product sales in Artificial Lift and Completion Systems. From a geographical perspective, the Europe/CIS/Africa revenues decreased sequentially as a result of the political unrest in North Africa, a less favorable revenue mix, lower software sales in the North Sea GeoMarkets and seasonally lower activity in Russia. Middle East and Asia revenue was lower as increasing IPM activity in Iraq and shale gas activity in India were insufficient to offset the impact of geopolitical events in the Middle East, seasonally lower software and product sales and weather-related slowdown in Australia. In North America, excellent growth in pricing, utilization and activity in our Well Services product line resulted in double-digit sequential revenue growth, which fully offset lower WesternGeco multi-client sales, the non-recurrence of the IPM gain share payout and the impact of weather-related slowdown on land in the U.S. In Latin America, strong growth in WesternGeco and M-I SWACO activity in the Brazil GeoMarket balanced lower offshore activity and lower software sales in the Mexico and Central America GeoMarket. Looking at some of the highlights of the quarter, I would like to start off with WesternGeco where a number of contract awards in Marine emphasize the success of new technology, both in acquisitions and in processing. Market take off of Coil Shooting acquisition with successful completion of the survey offshore Brazil and the award of a new Coil survey in Angola were particularly notable. The opening of the Brazil Research and Geoengineering Center in Brazil will be key to the processing of the Brazil data, while centers such as the WesternGeco GeoSolutions center in Jakarta will underline other contracts that have recently been awarded. For the growth in exploration activity to come, WesternGeco is well placed through technology and footprint to make further progress in the coming quarters. In the Drilling group, we continued to make significant progress in terms of integration and synergies between Smith and Schlumberger products and services to the point that we now see the transaction being neutral on an earnings per share basis in Q2 2011, moving up from our previous estimate of H2 2011. In addition to revenue synergies related to our global footprint, as well as our IPM and D&M businesses, we are also starting to see the first examples of revenue synergies related to new product development. As a result, Smith Bits continues to perform very well, keeping its leadership position in the roller-cone market while at the same time dramatically improving the PBT market share, both in international and North American markets. This position is further strengthened by the introduction of the new Spear bits that's bringing superior performance to our customers operating any unconventional shale basins. We have also recently introduced another new bit, based on our unique single-copper technology developed by our nominal drill division in Utah, which has shown up to 80% improvement in drilling rates as well significant reductions in shock and vibration. At our Investor Conference in February, we discussed the new HiWAY fracture stimulation technology, and this service continues to see very rapid growth. Total job count is now approaching 1,000 with 528 stages completed in the first quarter of 2011 compared to 102 in the fourth quarter of 2010. The first horizontal open hole well in the Bakken Shale with a total of 19 stages has been successfully completed using HiWAY and the first job has also been conducted in the Middle East. A significant number of opportunities for future jobs are now under evaluation for HiWAY. A new field for HiWAY technology deployment are under discussion in the U.S. and in Canada, Argentina, India, Oman, Saudi Arabia, Egypt, Algeria, Congo and Angola. In the investor conference, we also told you about the leading position Schlumberger has established in well intervention and production enhancements to our market leading Wireline, slickline and coiled tubing offering. We are currently seeing particularly strong growth in our new coiled tubing service ACTive, which offers real time fiber optic enabled measurements and this new service has already been deployed to 20 GeoMarkets around the world. Finally, I would like to highlight IPM's outstanding drilling performance on the well construction project in Iraq. All the projects have been mobilized and started on schedule in a very challenging environment, and we are now drilling both for BP and ExxonMobil. On the BP project, we have already managed to half the drilling time from the first well we drilled through the use of both technology and process optimization, and our ability to consistently redefine the benchmark for this performance is being recognized by our customers. With that, I will pass the call over to Andrew.