Methodological Discussion and Factor Analysis on Choosing Wells and
Layers for Water Plugging in Tahe Oilfield

doi:10.3863/j.issn.1674–5086.2013.06.017

Abstract

Abstract:

Tahe Oilfield is typical fractured-vuggy carbonate reservoir，which is seriously inhomogeneous and has active bottom
water. Because of the high development rate early，water flooding，water coning and water channeling gradually worsen. Well
shutin，narrow nozzle and water injection for coning control are failure at some degree，so water plugging is becoming the
main method for stabilizing oil production and controlling water cut. As the first step，choosing wells and layers is directly
relative to effect of water plugging，therefore，it′s precondition of success when water plugging. This paper summarizes some
significant factors from aspects of geology，development，engineering and technology when choosing wells and layers for
water plugging，combing with specific practice of water plugging in Tahe Oilfield. Then we make a comparison among for
comprehensive analysis using five kind of basic information，weight analysis and artificial neural network，and finally put
forward the theory of systematical well choosing. These factors and means have an important meaning for water plugging in
carbonate reservoir of Tahe Oilfield，which is also suitable for the similar reservoir.

Key words: Tahe Oilfield, water plugging, choosing wells and layers, factors, methods

Qin Fei, Wu Wenming, Yang Jianqing, Liu Guangyan, He Long. Methodological Discussion and Factor Analysis on Choosing Wells and
Layers for Water Plugging in Tahe Oilfield[J]. 西南石油大学学报(自然科学版), DOI: 10.3863/j.issn.1674–5086.2013.06.017.

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