Enhancing complex fracture geometry in subterranean formations, sequential fracturing
US10428633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Sep 23, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods including introducing a first high-viscosity treatment fluid (HVTF) into a subterranean formation through an opening and applying incrementally increased fracturing rate steps (IIFRSs) to the first HVTF to create or enhance a dominate fracture, wherein between each IIFRS applied to the first HVTF a downhole pressure slope over time will increase, decline, or stabilize at a first HVTF measured pressure slope. Evaluating the first HVTF measured pressure slope prior to applying a subsequent IIFRS to the first HVTF. Introducing a first low-viscosity treatment fluid (LVTF) through the opening to create or enhance a secondary azimuth fracture extending from the dominate fracture, and introducing a low-viscosity diversion fluid pill (LVDF) pill through the opening to create a fluidic seal therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.