Type the correct answer in the box. Spell all words correctly. Which technological process does OYL IT Inc. seem to use to extract shale gas?
OYL IT Inc. is an oil company that uses a unique process to extract shale gas. It injects a lot of water and sand into layers of shale deep under the earth. The high pressure of the liquid creates fractures in the sedimentary rocks, which then release shale gas. OYL IT Inc. thus uses the process of to extract gas.