By Ran Xinquan
Concise and readable, Water Injection For Low Permeability Reservoirs presents operators with the correct workflow platforms and engineering concepts for designing, making plans and enforcing water injection structures that would enhance restoration components. whilst utilized in low permeability or ultra-low permeability reservoirs, water injection is among the low-priced tools for making sure greatest construction premiums. This booklet offers either theoretical research and functional situations for designing and comparing water injection platforms and knowing key construction variables inquisitive about making designated predictions for oil and water generating charges, water injection charges, and restoration efficiency.
This e-book in actual fact explains the features of ultra-low permeability reservoirs and linear circulate theories. those issues are then utilized to layout and implementation. program situations of 4 oilfields are integrated to aid increase techniques whereas illustrating the correct workflow for making sure waterflooding functionality research and optimization. The e-book can be utilized as a reference for box technical body of workers, or as technical aid for the administration personnel.
- Discusses features of low and ultra-low permeability reservoirs and linear movement theories
- Provides specified examinations of facets comparable to rigidity sensitivity, fracturing timing, and nonlinear circulate theory
- Describes layout and implementation of complicated waterflooding systems
- Includes genuine case stories from 4 oilfields
Read Online or Download Advanced Water Injection for Low Permeability Reservoirs: Theory and Practice PDF
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Extra resources for Advanced Water Injection for Low Permeability Reservoirs: Theory and Practice
Some specific wells may even experience explosive flooding. But on the other hand, the wells on the lateral sides of the fractures may have a slow response, or even no response for a long time. This dual effect intensifies areal conflicts in waterflood development. At the same time, the water drive in the layers with few fractures developed may have poor results for oil production. 1 Features of Responses In the waterflood development of ultralow-permeability reservoirs in Changqing, the oil producers often have a response time of three to six months.
83 3 104 tons of oil. The Influence of Well Spacing In the development of reservoirs with well-developed fractures where inverted nine-spot diamond and rectangular patterns are adopted, well spacing is also an important factor influencing the effectiveness of water injection on oil producers. In other words, the larger the well spacing, the longer time it takes for water injection to become effective. In some zones where fractures are well-developed, the large-spaced oil wells may even have no response to injection for a long time because the water injected often channels off along the fractures.
1 Features of Stress Sensitivity The permeability of rocks reflects their overall conductivity and determines the fluid flow conditions. In the process of oil and gas field development, the pressure within reservoir rocks keeps changing. That is to say, the reservoir pressure gradually drops with the progress of development, thus increasing the effective pressure from the overlying rocks. This may compress the reservoir rocks and close the minute channels in them, thus decreasing the reservoir permeability; changes in permeability will inevitably affect the capacity of underground seepage, and then the productivity of oil and gas wells.