Classification of backfill materials for repair and insulation works in the wells

Authors: K.V. Strizhnev (Gazpromneft NTC LLC)
The classification of technologies of repair and insulation works, allowing to unify backfill compositions and technologies of repair and insulation works starting from hydrodynamic characteristics of the isolation object, is developed. It is shown that on the basis of this classification, all backfill compositions can be divided into two groups according to the type of insulation (sealing of casing string-borehole annuity and intrastratal insulation), which greatly simplifies the repair and insulation works design process. It is noted that the discovered regularities can be used to execute a technical and economic assessment and integrated programs on technologies implementation.


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