一种提高超深裂缝性储层有效改造体积的工艺方法和应用
By using high-density, low-viscosity, non-crosslinked fracturing fluid to carry quartz sand of different particle sizes and high-viscosity gel fracturing fluid to carry ceramsite proppant, the natural and artificial fractures in ultra-deep fractured reservoirs were gradually modified, solving the problems of opening and supporting small-scale natural fractures and achieving efficient reservoir stimulation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2024-04-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to effectively open and support small-scale natural fractures in ultra-deep fractured reservoirs, resulting in limited stimulation volume and high construction risks under high geostress conditions.
High-density, low-viscosity, non-crosslinked fracturing fluid is used to carry self-suspended quartz sand proppant of different particle sizes to modify the natural fractures in ultra-deep fractured reservoirs step by step. In addition, high-viscosity, crosslinked gel fracturing fluid is used to carry ceramic proppant to modify the artificial fractures near the wellbore, forming a flow channel with high conductivity.
It significantly improved the connectivity of natural fractures and the effective stimulation volume of reservoirs, solved the problems of opening and supporting small-scale natural fractures, ensured construction safety, and improved reservoir stimulation effect.
Smart Images
Figure CN120626140B_ABST