Well YQ5-1 is a production well in the Ordovician system of Yuqi block, Tahe oilfield, Northwest Bureau of Sinopec.The design of the well is 6110 meters deep, and the depth of the drilling is 6095.11 meters deep.It is expected that the steam injection pressure is 27-30MPa, the steam temperature is 380 degrees, and the cycle steam injection amount is 3000 tons.
Shandong De Shi Petroleum Equipment Co., Ltd. was founded in 2007. It is a contractor who can provide integrated solutions for heavy oil thermal recovery technology and services. It has construction admittance for heavy oil injection, nitrogen injection and multi-function hot washing of oil wells in Shengli Oilfield.
At present, the company has the only 35MPa "ultra supercritical steam generator" that normally running in China.The rated pressure is 35MPa, the rated steam temperature is 390℃, the rated displacement is 9.2t/h, and the steam quality is 80%
Steam injection started at 21 o'clock on May 24th, 2014. Until June 10th, it stopped at 6 o'clock. Before the stop of the injection,the steam outlet pressure was 28.2MPa, the outlet temperature was 378 degrees, the flow rate of steam injection was 8m3/h, the oil pressure was 28MPa and the total steam injection was 3107m3.
It takes 13 days to finish the construction of YQ5-1 Well in Tahe oilfield on steam injection compound huff and puff.A total of 3107 tons of steam injection has been completed in this well, which creates a number of first, such as the depth, pressure and temperature of the deep well combined huff and puff of the ultra supercritical boiler in China. As of August 1, 2014, the well produced 1215 tons of oil, the oil pressure is 7 MPa and the casing pressure is 7.5 MPa. At present, the well is still in normal production, and the daily production of oil is about 12 tons / day.
