FIELD: oil and gas industry.
SUBSTANCE: invention relates to the development of high-viscosity oil or bitumen deposits containing impermeable interlayers with hydraulic fracturing cracks. The method includes drilling of vertical pressure well and horizontal production well in deposit represented by the upper and lower parts of the production formation, separated by an impermeable interlayer, support of the vertical pressure and horizontal production wells with casing strings, perforation of the casing strings, pumping of heat carrier through the vertical pressure well, and taking products through the horizontal production well. A vertical pressure well with an opening of the impenetrable interlayer is drilled, the casing in the upper and lower parts of the production formation and in the impermeable interlayer is perforated; hydraulic fracturing is performed in the vertical pressure well within the interval of the impermeable interlayer and crack is supported. Then direction of crack propagation in azimuth and height of fracture crack is determined. Then, at least one vertical pressure well is drilled at a distance of 150 m from the first vertical pressure well perpendicular to the direction of crack propagation. The horizontal production well is drilled at a distance of 5 m below the bottom of the vertical pressure wells and perpendicular to the direction of the hydraulic fracturing cracks, the heat carrier is pumped through vertical pressure wells and product is taken through horizontal production well. When the production rate is reduced by 50% from the initial value, interval hydraulic fracturing is performed from horizontal production well intervals between vertical pressure wells with opening of impermeable interlayer with formation of cracks, the fracture cracks are fixed using weighted proppant.
EFFECT: increased efficiency and implementation of the method.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| RECOVERY METHOD OF HIGH-VISCOSITY OIL OR BITUMEN DEPOSIT, USING HYDRAULIC FRACTURES | 2016 |
|
RU2626482C1 |
| DEVELOPMENT METHOD OF HIGH-VISCOSITY OIL OR BITUMEN DEPOSIT WITH APPLICATION OF HYDRAULIC FRACTURE | 2016 |
|
RU2627345C1 |
| HIGH-VISCOSITY OIL OR BITUMEN RECOVERY METHOD, USING HYDRAULIC FRACTURES | 2016 |
|
RU2626845C1 |
| METHOD FOR DEVELOPING SUPER-VISCOUS OIL RESERVOIR WITH CLAY BRIDGE | 2018 |
|
RU2681796C1 |
| RECOVERY METHOD OF HIGH-VISCOSITY OIL DEPOSIT BY STEAM CYCLIC EFFECT | 2016 |
|
RU2633930C1 |
| METHOD OF OPERATION OF PRODUCTION AND WATER-BEARING FORMATIONS SEPARATED BY IMPERMEABLE INTERLAYER, WELL WITH HORIZONTAL SHAFTS AND CRACKS OF FORMATION HYDRAULIC FRACTURING | 2016 |
|
RU2630514C1 |
| MINING METHOD FOR MULTI-LAYERED INHOMOGENEOUS OIL RESERVOIR | 2016 |
|
RU2626492C1 |
| HIGH-VISCOUS AND HEAVY OIL FIELD DEVELOPMENT METHOD WITH THERMAL ACTION | 2008 |
|
RU2368767C1 |
| METHOD FOR DEVELOPMENT OF OIL DEPOSITS BY HYDRAULIC FRACTURING FRACTURES | 2016 |
|
RU2618542C1 |
| METHOD OF HIGH-VISCOSITY OIL AND BITUMEN DEPOSITS DEVELOPMENT | 2015 |
|
RU2597303C1 |
