Microseismic fracture mapping using seismic source timing measurements for velocity calibration
US7660194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2005 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Apr 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for microseismic fracture mapping using seismic source timing measurements for velocity calibration is disclosed. The system may include a seismic source coupled to a wireline and a seismic source trigger, a sensor capable of detecting a first signal from the seismic source trigger, a transmitter coupled to the sensor, capable of transmitting a time value associated with the first signal, a receiver capable of detecting an event generated by the seismic source; and an analyzer capable of calculating a microseismic velocity of the event. In one embodiment, a first signal is transmitted through a wireline to trigger a seismic source. The first signal is detected, and a first time value associated with the first signal is transmitted. An event associated with the seismic source is detected and a second signal associated with the event is transmitted to an analyzer. A microseismic velocity is calibrated based on the time difference between the first time value and a second time value associated with the second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.