Abstract: Till now, it is still a technical problem to build the single-layer architecture and surface structure models for a shale gas-production area under the horizontal well factory pattern. Focusing on the single-layer shale, We analyze the structure characteristics of the single shale layers, establish the shale layer correlation model, develop the method of 3D visual multi-well correlation technology for the single-layer shale by using horizontal well logging, carry out the division and correlation of the single-layer shale, and complete the 3D single-layer architecture and surface structure models by relying on thecoupling method. A new method of 3D visual characterization of the single-layer architectures and surface structures under the horizontal well factory pattern in the shale gas-production area is finally established. By using this method, the establishment of 6 shale layer models, the visual shale layer correlation of horizontal wells and the establishment of the single layer structure and 7 single layer surface structural models in one shale gas-production area of the shale gas field W have been successfully completed, which not only proves the practicability and reliability of this method, but also provides the structural models for fine production management in the later stage of the study area.

Key words: the single-layer shale, well factory pattern, shale layer correlation among multi-horizontal wells, 3D visual characterization, structural modeling