The small oil sand of Gudong oilfield mostly belongs to meander fluvial sedimentation, which is limited area, poor reservoir property, dispersed distribution, low flood and development performance. Digital technique is used to optimize the development project after small oil sand reservoir is described, and at the same time, the integrated technique of drilling and production is implemented.Economic benefit is enhanced through field practice, reservoir availability and recovery ratio is respectively enhanced by 59.1% and 14.8%.