关键词:  , 页岩气水平井, 钻完井技术, 地质工程,一体化, 威远

Abstract: Weiyuan Shale Gas Demonstration Zone is currently at the stage of large-scale development while local geological engineering characteristics such as the complexity in lithology and brittle shale layers and difficulties in tracking reservoirs are restricting the shortening of drilling cycle and operating cost. With the expansion of exploration, the supporting technology of handling brittle edge zones and deep reservoir development needs to be improved. To achieve efficiency and sustainability of development, drilling techniques, including high-performance drilling fluid, geosteering, and horizontal well cementing, have been optimized and integrated. The researches progressing in diesel-base drilling fluid, sliding orientation and independent rotary steering tool have achieved significant effects on optimizing drilling techniques and efficiency, providing a reference to the extraction of shale gas in other areas. The idea of developing one-trip drilling technology, perfecting deep shale gas drilling and multi-layer shale development provides suggestions for the next research stage.

Key words:  , shale gas, horizontal well, drilling and completion, geology-engineering integration, Weiyuan