Fracture Characterisation

摘要

This application relates to methods and apparatus for monitoring hydraulic fracturing in well formation and fracture characterization using distributed acoustic sensing (DAS). The method involves interrogating an optic fiber arranged down the path of a borehole to provide a distributed acoustic sensor and also monitoring flow properties of fracturing liquid pumped into the well where the acoustic data from the distributed acoustic sensor is processed together with the flow properties data to provide an indication of at least one fracture characteristic.

主权项

1. A method of fracture characterisation of a downwell hydraulic fracturing process comprising:
interrogating an optic fibre arranged down the path of a well bore to provide a distributed acoustic sensor; monitoring flow properties of fracturing fluid as it flows into the well bore; and processing acoustic data from the distributed acoustic sensor together with flow data from monitoring the flow properties to provide an indication of at least one fracture characteristic, wherein providing said indication of at least one fracture characteristic comprises determining an amount of fracturing fluid and/or proppant supplied to each fracture site.