Study of Shale Gas Debris' Fractal Theory and Rock Drillability

摘要

With the developing of shale gas industry, in order to predict rock drillability in drilling time, we should set up the rock drillability profile, which has significant meaning. The article introduces the fractal theory briefly and gives detailed theoretical derivation on fractal dimension D. It has many disadvantages in actual production like short of core and high-cost. In this article, it uses upward shale gas debris to study rock drillability. In view of the FuLing-shale-gas-blocks, this article establishes a relationship between fractal dimension and drillability of extremum, the model has high fitting degree, which has considerable meaning for the actual production.