Chinese Academy of Sciences

Guoxu Shu

Liang Huang

Shoudong Huo

Xuhui Zhou

Shengqiang Mu

Jiangyun Zhang

Jiaru Zou

Mingran Liu

Wenchao Su

A method for determining hydraulic fractures in the near-wellbore region, comprising the following steps: constructing a model with hydraulic fractures, a wellbore, and a formation as main components, and discretizing the model using non-uniform grid technology. This data subset is inverted using the time-lapse full-waveform inversion (TL-FWI) algorithm to achieve high-precision reconstruction of the hydraulic fractures and to obtain key attributes such as fracture-wellbore connectivity, extent of fracture propagation, and fracture geometry.

Quantitative evaluation method for hydraulic fractures in near-wellbore region

An irregular seismic data collection method is based on forward modeling. The method includes: fully collecting geological information of a work area to build a geological model, determining arrangement parameters of receiver points and shot points for regular high-density collection and irregular sparse collection, performing irregular optimization design on positions of the shot points based on forward modeling, performing irregular optimization design on positions of the receiver points based on forward modeling, and outputting a preferred irregular sparse observation system. Compared with the existing technologies, an arrangement scheme of shot points and receiver points in the present invention, including the irregular sparse observation system, implements irregular optimization design of the shot points and the receiver points based on a forward modeling technology by using a greedy strategy, so that the designed irregular observation system can suppress to the greatest extent spatial aliasing caused by irregular sparse collection.

Forward simulation-based irregular seismic data acquisition method

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Guoxu Shu