Shale gas layered well tying collision risk prediction and early warning method under constraint of structural model

Abstract

The invention relates to the technical field of shale gas exploitation, and discloses a set of shale gas stratified system well collision risk prediction and early warning method under the constraint of a structural model for the development requirement of a shale gas stratified system, which comprises a two-dimensional gridding collision risk coefficient model in a target layer and a related collision risk early warning and target point adjustment method. Through the implementation of the method, dynamic structure modeling, an intelligent data loading technology, well site data transmission and application, geosteering and anti-collision comprehensive application, a three-dimensional visualization technology and the like are matched, a shale gas horizontal well three-dimensional visualization intelligent anti-collision technology system is established, the scientificity of horizontal well deployment can be improved. the risk of inter-well collision under the dense well pattern condition is avoided.

Description

technical field [0001] The invention relates to the technical field of shale gas exploitation, in particular to a method for predicting and early warning of collision risk of shale gas layered series wells under the constraints of structural models. Background technique [0002] The development of shale gas mainly uses horizontal well technology. With the continuous exploitation of shale gas in gas fields, the gas production of original horizontal wells decreases or gradually ceases to produce gas. In terms of location deployment, a denser well pattern deployment strategy is adopted. The well pattern deployment strategy includes adding infill wells or layered series next to the original horizontal wells to increase the recovery of shale gas. The number of horizontal wells in the underground space is increasing, the spatial relationship of horizontal well drilling trajectories in the underground space is complex, and the distance between horizontal well trajectories in differ...

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Problems solved by technology

[0004] The present invention intends to provide a collision risk prediction and early warning method for shale gas layered series wells under the constraints of structural models, so as to solve the problem of collision between new drilling and adjacent wells caused by the deviation between actual geological data and design data when drilling in the prior art

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