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2010•Journal of Chengde Petroleum CollegeRequires access

Research and Application of Acidizing Technology for Enhancing Injectivity in Xixiagou Block Low Permeability Reservoir

YU Neng-wen

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Abstract

In view of low permeable and poor waterflood in Xixiagou block in Santanghu Oilfield,analysis of adverse reservoir factors and research of acid technology for enhancing injectivity have been carried out.The optimization of acid fluid system shows that the optimized acid fluid has little corrosive attack towards metal as well as strong dissolution ability towards debris and it is in good matching with underground fluid.Three field experiments were carried out,achieving an effective successful rate of 100% and decreased injection pressure of 2-5MPa.

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What this paper is about

In view of low permeable and poor waterflood in Xixiagou block in Santanghu Oilfield,analysis of adverse reservoir factors and research of acid technology for enhancing injectivity have been carried out.The optimization of acid fluid system shows that the optimized acid fluid has little corrosive attack towards metal as well as strong dissolution ability towards debris and it is in good matching with underground fluid.Three field experiments were carried out,achieving an effective successful rate of 100% and decreased injection pressure of 2-5MPa.

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Available abstract

In view of low permeable and poor waterflood in Xixiagou block in Santanghu Oilfield,analysis of adverse reservoir factors and research of acid technology for enhancing injectivity have been carried out.The optimization of acid fluid system shows that the optimized acid fluid has little corrosive attack towards metal as well as strong dissolution ability towards debris and it is in good matching with underground fluid.Three field experiments were carried out,achieving an effective successful rate of 100% and decreased injection pressure of 2-5MPa.

Key concepts: Petroleum engineering, Dissolution, Injection well, Permeability (electromagnetism), Geology, Water injection (oil production), Geotechnical engineering, Engineering

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