By Ran Xinquan
Concise and readable, Water Injection For Low Permeability Reservoirs offers operators with the right kind workflow structures and engineering concepts for designing, making plans and enforcing water injection structures that might increase restoration components. whilst utilized in low permeability or ultra-low permeability reservoirs, water injection is without doubt one of the competitively priced equipment for making sure greatest construction charges. This booklet presents either theoretical research and sensible instances for designing and comparing water injection platforms and knowing key creation variables concerned about making precise predictions for oil and water generating charges, water injection premiums, and restoration efficiency.
This ebook sincerely explains the features of ultra-low permeability reservoirs and linear stream theories. those issues are then utilized to layout and implementation. software situations of 4 oilfields are incorporated to aid enhance ideas whereas illustrating the correct workflow for making sure waterflooding functionality research and optimization. The booklet can be utilized as a reference for box technical team of workers, or as technical aid for the administration personnel.
- Discusses features of low and ultra-low permeability reservoirs and linear movement theories
- Provides specific examinations of points corresponding to rigidity sensitivity, fracturing timing, and nonlinear move theory
- Describes layout and implementation of complicated waterflooding systems
- Includes genuine case reports from 4 oilfields
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Extra info for Advanced Water Injection for Low Permeability Reservoirs. Theory and Practice
This makes the permeability of ultralow-permeability cores more sensitive to stress than that of medium- and high-permeability cores. ) and the PVT(Pressure-Volume-Temperature) state of the fluids. Tests using nitrogen and standard saline separately to measure the stress sensitivity of the fluids as they flow in the rock show that the value of the stress sensitivity tested with standard saline is higher than that with nitrogen (Fig. 2-4).
In addition, the output decline of producers on the lateral sides of fractures in Pingqiao obviously slowed down. The Influence of Interlayer Connectivity Apart from the three factors discussed, the oil-layer connectivity also has an influence on the effectiveness of water injection and how soon it produces a response in the oil wells. For example, among the four injection blocks in the Ansai Oilfield, while Pingqiao and Wangyao contain only single oil layers, the central and southern parts of Xinghe and Houshi contain multiple oil layers.
2 The Influence of Advanced Injection on TPG 77 78 78 78 79 82 85 85 86 86 87 88 90 90 91 92 92 92 93 96 96 99 102 102 105 109 110 110 111 111 Chapter | 2 Nonlinear Percolation Theory for UPR 53 Flow patterns of fluids in an ultralow-permeability reservoir are dominated by four factors: first, the composition and physicochemical properties of the fluids; second, the pore structures and physicochemical properties of the porous media; third, the flow dynamics (mainly the environments and conditions of the flow and the interaction between the fluids and between the fluids and the porous media); and fourth, the influence of the effective stress.
Advanced Water Injection for Low Permeability Reservoirs. Theory and Practice by Ran Xinquan