Method of optimizing production of gas from vertical wells in coal seams
US7445045B2 · kind B2 · utility
30Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2003 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Aug 5, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/114
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is directed to a method for producing gas from a subterranean formation containing a coal seam. The method includes the steps of drilling a substantially vertical well bore into the subterranean formation, which intersects the coal seam and fracturing the coal seam using a hydrajetting tool to produce at least one pair of opposed bi-wing fractures substantially along a plane of maximum stress. One or more horizontal well bores may also be drilled into the coal seam along which the coal seam can be further fractured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.