Apparatus for physical simulation experiment for fracturing in horizontal well layer by layer by spiral perforation and method thereof
US10550688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N3/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for a physical simulation experiment of fracturing an unconventional oil and gas reservoir layer by layer by spiral perforation via a horizontal well bore. The apparatus includes an outer wellbore provided with at least three layers of spiral perforations, and an inner wellbore provided with at least three layers of through-holes. The method includes injecting fracturing fluid into the inner wellbore, and opening a first layer cracks of a stratum by the fracturing fluid passing the first through-hole layer and the first spiral perforation layer, opening a second layer cracks of the stratum by the fracturing fluid passing second through-hole layer and second spiral perforation layer and opening a third layer cracks of the stratum by the fracturing fluid passing third through-hole layer and third spiral perforation layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.