713-359-7000 [email protected] tescocorp.com ©2015 Tesco Corporation . Casing Running in China Results in Total Depth Tesco True Results CDS job in China Customer Focus: The Fushun Block has a long horizontal section with Shale gas well designs and sometimes our client will need multiple wiper trips to make the conventional casing running successful. Even with wiper trips, there is no guarantee to run casing to target depth with conventional casing running equipment, so cost and well safety concerns have been raised. The customer was looking for a solution to eliminate the need for wiper trips, which would improve cost efficiency and well integrity. Tesco External CDS service was proposed as the best solution. True Result: In the Fushun Block, well depths reach 5,000 meters (16,400 ft) with horizontal sections extending over 1,700 meters (5,600 ft). Tesco’s External Casing Drive System (ECDS) was rigged up to run the 5”, 23.2# casing, after reaching total drilling depth of 3,300 meters (10,826 ft). Once reaching the horizontal section, the casing could no longer be run in the hole so the pumps were started to build circulation and the top drive rotation was set at 35 rpm with 13k ft.lbs torque setting. As a result, the casing was successfully run to target depth with an average run- ning speed of 5-6 joints per hour. Proven Performance: The customer was very satisfied with the services provided by Tesco and the ECDS equipment and now believes fully in the technology. Although attempting to use a competi- tor casing running tool on one well unsuccessfully, the customer immediately returned to Tesco. Through reliable and customer focused service, Tesco has run the 5” cas- ing successfully on every well for this customer ever since. Tesco’s Casing Drive System™ (CDS™) runs casing to Total Depth in difficult well trajectory. True in our Service towards Customer Focus Location: SiChuan Fushun Service Provided: Casing Running, Casing Drive System, 5” Well Type: Shale Gas Well Trajectory: Horizontal Top Drive: Third Party Casing Size/String: 5" / JFE BEAR or HYDRIL 513 Hole Size: 6 1/2” Max Horizontal Section: 6,151 ft Depth In/Out: 16,400 ft Tripping Speed: 11 joints-per-hour