川中八角场香四层致密砂岩背斜整装凝析气藏,虽然地质储量很丰富,但因开采难度很大,资源优势难以转化为经济优势。近年来,经多口井大型加砂压裂成功后,使高效开发变为了现实,并为国内复杂气藏开采提供了经验,同时也使八角场凝析气藏大型加砂压裂步伐加快。在2003年6月中的8天内,先后对角61B井和角60B井成功地进行了两井次大型加砂压 The four-layer sandstone anticline integrated condensate gas reservoir of the Xiang 4 Formation in the Bajiao Section in Central Sichuan Basin, although rich in geological reserves, is difficult to be transformed into an economic advantage due to the difficulty in mining. In recent years, after the success of large-scale sand fracturing in many wells, the high-efficiency development has become a reality, providing experience for the exploitation of complex gas reservoirs in China and accelerating the large-scale sand fracturing of the condensate gas field in the Bajiaochang field. During the 8 days in mid-June 2003, two wells of large boreholes were successfully drilled in Diagonal Well 61B and Well 60B