In-situ Kerogen conversion and product isolation

An integrated process for extracting a kerogen-based product from a subsurface shale formation comprising subsurface shale, the process comprising:

• providing an oxidant to kerogen in subsurface shale;
• contacting the kerogen in the subsurface shale with the oxidant at a temperature in the range of between 0° C. and 200° C. to form organic acids;
• mobilizing at least a portion of the organic acids from the subsurface shale to produce a first mobile kerogen-based product;
• treating the first mobile kerogen-based product at a pH in a range from 7 to 12, isolating at least a portion of the organic acids contained therein, and recovering a second mobile kerogen-based product;
• treating the second mobile kerogen-based product at a pH in the range from 1.5 to 7, isolating at least a portion of the organic acids contained therein, and recovering a third mobile kerogen-based product;
• and
• treating the third mobile kerogen-based product to isolate at least a portion of the organic acids contained therein, and recovering an organic acid lean aqueous fluid.