YQ5-1 well is a production well in the Ordovician of the Yuqi block of the Tahe oilfield of Sinopec Northwest Bureau. The designed well depth is 6110 meters, and the completed drilling depth is 6095.11 meters. Expected steam injection pressure of 27-30MPa, steam temperature of 380 degrees, and periodic steam injection volume of 3000 tons.
Shandong Deshi Petroleum Equipment Co., Ltd. started steam injection at 21:00 on May 24, 2014, and stopped injection at 6:00 on June 10. Before stopping injection, the steam outlet pressure was 28.2 MPa, the outlet temperature was 378 degrees, the steam injection flow rate was 8 m3/h, the oil pressure was 28 MPa, and the cumulative steam injection was 3107 m3.
Completed the steam injection composite throughput construction of YQ5-1 well in Tahe Oilfield after 13 days. The well has completed a cumulative designed steam injection volume of 3107 tons, creating multiple firsts in the depth, pressure, temperature, and other aspects of deep well composite throughput for ultra supercritical boilers in China. As of August 1, 2014, the well has produced a total of 1215 tons of oil, with an oil pressure of 7 megapascals and a casing pressure of 7.5 megapascals. At present, the well is still in normal production, with a daily output of about 12 tons of oil.
