Method and apparatus for determining integrated exploitation approach of shale and adjacent oil reservoirs

An apparatus for determining an integrated exploitation approach for a shale and adjacent oil reservoirs comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein the processor is configured to implement, when executing the computer program, the method for determining an integrated exploitation approach for a shale and adjacent oil reservoirs comprising:

• collecting logging data of a target reservoir of interest comprising the shale and adjacent oil reservoirs by a logging instrument and determining a thickness of the shale, thicknesses of the adjacent oil reservoirs to the shale, and a planar distribution area of the shale and the adjacent oil reservoirs;
• determining a top boundary of the adjacent oil reservoir above the shale, and a bottom boundary of the adjacent oil reservoir below the shale, based on the thickness of the shale, the thicknesses of the adjacent oil reservoirs, and the planar distribution area of the shale and the adjacent oil reservoirs;
• acquiring a formation pressure, a fracture pressure and a starting pressure gradient for starting fluid seep of the adjacent oil reservoirs, and determining a maximum seepage radius of each of the adjacent oil reservoirs based on the formation pressure, the fracture pressure and the starting pressure gradient that are acquired;
• determining a well pattern for integrated exploitation of the shale and the adjacent oil reservoirs, and using a fluctuating horizontal well or a vertical well to bore through the shale and the adjacent oil reservoirs, based on the thickness of the shale, the top boundary, the bottom boundary and the maximum seepage radius;
• determining a well completion approach according to the well pattern for integrated exploitation;
• determining a total number of perforation clusters of gas injection wells, a number of perforation clusters corresponding to each of the adjacent oil reservoirs, a gas injection amount per unit time of each of the perforation clusters, and a total gas injection amount per unit time of the gas injection wells, according to the well completion approach;
• and
• using production wells and gas injection wells according to the well pattern to perform an integrated exploitation for the shale and the adjacent oil reservoirs, according to the total number of perforation clusters of gas injection wells, the number of perforation clusters corresponding to each of the adjacent oil reservoirs, the gas injection amount per unit time of each of the perforation clusters, and the total gas injection amount per unit time of the gas injection wells.

A non-transitory computer-readable storage medium storing therein a computer program for performing the method for determining an integrated exploitation approach for a shale and adjacent oil reservoirs comprising:

• collecting logging data of a target reservoir of interest comprising the shale and adjacent oil reservoirs by a logging instrument and determining a thickness of the shale, thicknesses of the adjacent oil reservoirs to the shale, and a planar distribution area of the shale and the adjacent oil reservoirs;
• determining a top boundary of the adjacent oil reservoir above the shale, and a bottom boundary of the adjacent oil reservoir below the shale, based on the thickness of the shale, the thicknesses of the adjacent oil reservoirs, and the planar distribution area of the shale and the adjacent oil reservoirs;
• acquiring a formation pressure, a fracture pressure and a starting pressure gradient for starting fluid seep of the adjacent oil reservoirs, and determining a maximum seepage radius of each of the adjacent oil reservoirs based on the formation pressure, the fracture pressure and the starting pressure gradient that are acquired;
• determining a well pattern for integrated exploitation of the shale and the adjacent oil reservoirs, and using a fluctuating horizontal well or a vertical well to bore through the shale and the adjacent oil reservoirs, based on the thickness of the shale, the top effective boundary, the bottom boundary and the maximum seepage radius;
• determining a well completion approach according to the well pattern for integrated exploitation;
• determining a total number of perforation clusters of gas injection wells, a number of perforation clusters corresponding to each of the adjacent oil reservoirs, a gas injection amount per unit time of each of the perforation clusters, and a total gas injection amount per unit time of the gas injection wells, according to the well completion approach;
• and
• using production wells and gas injection wells according to the well pattern to perform an integrated exploitation for the shale and the adjacent oil reservoirs, according to the total number of perforation clusters of gas injection wells, the number of perforation clusters corresponding to each of the adjacent oil reservoirs, the gas injection amount per unit time of each of the perforation clusters, and the total gas injection amount per unit time of the gas injection wells.