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Laboratory Experiment and Application Evaluation of a Bio-Nano-depressurization and Injection-Increasing Composite System in Medium-Low Permeability Offshore Reservoirs. | LitMetric

AI Article Synopsis

  • - Bohai Oilfield developed a bio-nano-injection-increasing solution to address high injection pressure and low injection volume issues, consisting of bio-surfactants, nano-polysilicon particles, and dispersants.
  • - The new technology aims to enhance performance by offering efficient decompression and improved injection capabilities, yet struggles with optimizing and predicting its application effectiveness.
  • - Using Well A1 as a case study, the research optimized various parameters of the bio-nano-fluid and demonstrated its ability to boost reservoir permeability and reduce injection pressure, providing a reliable evaluation method for similar technologies.

Article Abstract

Given the high injection pressure and insufficient injection volume in the offshore oilfield, Bohai Oilfield has developed a bio-nano-depressurization and injection-increasing composite system solution (bio-nano-injection-increasing solution) composed of bio-surfactants, hydrophobic nano-polysilicon particles, and dispersant additives. In response to the current problems, a new type of bio-nano-depressurization and injection enhancement technology has been studied, which has multiple functions such as nano-scale inhibition and wetting reversal. The new technology has the technical advantages of efficient decompression, long-term injection, and wide adaptation. However, there is still a lack of optimization schemes and application effect prediction methods, which hinder the further popularization and application of the bio-nano-composite system solution. To solve this problem, this paper takes Well A1 in the Bohai Sea as an example to optimize the injection volume, concentration, and speed of the bio-nano-augmentation fluid and evaluates the application effect by using the proposed well testing, water absorption index, and numerical simulation methods. The research results show that the bio-nano-injection fluid can effectively improve the reservoir permeability and reduce the injection pressure. The application effect evaluation method proposed is reliable and can provide some reference for similar depressurization and injection-increasing technologies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10157855PMC
http://dx.doi.org/10.1021/acsomega.3c00882DOI Listing

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