Method for cracking strata with organic materials to improve recovery ratio of adjacent oil-bearing reservoir stratum

[0023] Example 1: Geology and Reservoir Model I - Oil-bearing reservoirs directly adjacent to shale (eg figure 1 shown)

[0024] 1) Arrange horizontal well groups in shale formations: including multiple horizontal wells for placing heating cables, one horizontal oil production well (1), and one horizontal oil production well (2) on the top layer of the oil-bearing reservoir, heating the shale formation and closing the horizontal production wells at the same time Oil well (1), when the shale temperature rises above 150°C, the kerogen in the shale begins to crack and produce CO 2 + C2-C5 light hydrocarbon gas.

[0025] 2) Increased pressure in shale formations and oil-bearing reservoirs. CO 2 + C2-C5 light hydrocarbon gases flow into oil-bearing reservoirs. When the pressure of the oil-bearing reservoir reaches the point where crude oil and CO can be formed 2 + When the C2-C5 light hydrocarbon gas miscible pressure range, start the horizontal oil production well (2). CO...

[0029] Example 2: Geology and Reservoir Model II - Oil-bearing reservoir interbedded with shale (eg figure 2 shown)

[0030] 1) Arranging horizontal well groups in shale formations: including multiple horizontal wells for placing heating cables, and one horizontal oil production well (1). A vertical oil production well (2) is arranged on the top layer of the oil-bearing reservoir. Heating the shale formation simultaneously shuts down the horizontal producing well (1). When the shale temperature rises above 150°C, the kerogen in the shale begins to crack and produce CO 2 + C2-C5 light hydrocarbon gas.

[0031] 2) Increased pressure in shale formations and oil-bearing reservoirs. CO 2 + C2-C5 light hydrocarbon gas flows into the oil-bearing reservoir along the pre-arranged vertical well channel (3). When the pressure of the oil-bearing reservoir reaches the point where crude oil and CO can be formed 2 + When the C2-C5 light hydrocarbon gas miscible pressure range, star...