Advanced Water Injection for Low Permeability Reservoirs. by Ran Xinquan

By Ran Xinquan

Concise and readable, Water Injection For Low Permeability Reservoirs offers operators with the correct workflow platforms and engineering recommendations for designing, making plans and imposing  water injection platforms that might enhance restoration elements. whilst utilized in low permeability or ultra-low permeability reservoirs, water injection is among the within your budget equipment for making sure greatest construction charges. This publication offers either theoretical research and functional instances for designing and comparing water injection structures and realizing key creation variables excited about making special predictions for oil and water generating charges, water injection charges, and restoration efficiency.

This publication sincerely explains the features of ultra-low permeability reservoirs and linear move theories. those themes are then utilized to layout and implementation. program circumstances of 4 oilfields are integrated to aid strengthen strategies whereas illustrating the right kind workflow for making sure waterflooding functionality research and optimization. The publication can be utilized as a reference for box technical body of workers, or as technical help for the administration personnel.

  • Discusses features of low and ultra-low permeability reservoirs and linear move theories
  • Provides designated examinations of elements corresponding to rigidity sensitivity, fracturing timing, and nonlinear stream theory
  • Describes layout and implementation of complex waterflooding systems
  • Includes genuine case stories from 4 oilfields

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Additional info for Advanced Water Injection for Low Permeability Reservoirs. Theory and Practice

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To do this, the development mode of advanced injection should be adopted. Scientists and technologists from the Changqing Oilfield, while addressing the reservoir features of big kick-off pressure differences, high-pressure Chapter | 1 Features of Ultralow-Permeability Reservoirs in the Ordos Basin 39 sensitivities, low-pressure coefficients, and slight differences between reservoir pressure and saturation pressure, creatively proposed a theory of advanced water injection through in-depth studies of flow patterns and constant technological practices.

2% in the first four years. Another case is from the advanced-flooded blocks in Wuliwan and Dalugou of the Jing’an Oilfield. Thanks to the effective pressure displacement system built by advanced injection, the initial per-well output in these blocks increased by 1 t/dB2 t/d and remained there for a long time (Figs. 1-33 and 1-34). 8 Improving Producer Deliverability On the basis of the mechanism of the pressure-sensitive effect of deformable media, we built a mathematical model of the threshold pressure gradient and a model of the non-Darcy filtration for boundary layers in an ultralowpermeability reservoir.

The adoption of advanced injection, therefore, can help maintain the reservoir pressure and shorten the response time. High threshold pressure gradient One major problem in the Changqing Oilfield is a lack of producing energy. 7, which turns out to be the direct kinetic cause of low output per well. Advanced injection aims at solving this problem to improve the per-well output. The general mentality for advanced injection is to pour water into the injectors before the producers are put into production.

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