In the morning of February 12, 2009, rejoicing was full of Southwest Oil and Gas Field Huaqian Well 18 in Chongqing, by applying acid-fracture technology, ZPEC Drilling team 14 have increased the well production from 40,000 cubic meters per day to 250,000 cubic meters per day. The successful application of this technology not only brought important significance to Southwest Oil and Gas Field, but also greatly enhanced the reputation of ZPEC Drilling in Northeast of Sichuan province.