Success Story: NIW Approved In Just 44 Days! Our Expert Team Helped a Graduate Research Assistant From Nigeria Secure Success
Client’s Testimonial:
“I had a wonderful experience working with the lawyers at Chen Immigration (wegreened) for my EB-2 NIW petition. From the very beginning, they were incredibly helpful, detailed, and meticulous about making sure my profile and materials were represented in the strongest possible way. They gave clear guidance, thoughtful feedback, and the kind of strategic suggestions that genuinely made me feel like my case was in great hands.
One thing I really appreciated was how seamless their system is. Their website is super user-friendly, organized, and easy to follow, which made the whole process feel much less overwhelming. I was honestly very nervous going into this, but their communication style and the way they handled each step put me completely at ease.
Timeline-wise, I started with regular processing in early November and upgraded to premium processing around Thanksgiving. I received my approval decision in 15 business days. I am so grateful for their support and professionalism, and I would absolutely recommend Chen Immigration to anyone considering an NIW petition.”
On December 19th, 2025, we received another EB-2 NIW (National Interest Waiver) approval for a Graduate Research Assistant in the Field of Petroleum Engineering (Approval Notice).
General Field: Petroleum Engineering
Position at the Time of Case Filing: Graduate Research Assistant
Country of Origin: Nigeria
State of Residence at the Time of Filing: Oklahoma
Approval Notice Date: December 19th, 2025
Processing Time: 1 month, 14 days (Premium Processing Upgrade Requested)
Case Summary:
A central challenge in modern petroleum engineering is how to increase recovery from mature reservoirs while also reducing emissions, minimizing waste, and enabling more reliable carbon dioxide storage. The client’s work addresses this critical intersection, combining advanced reservoir modeling with data-driven analytics and machine learning to improve forecasting, simulation, and enhanced oil recovery workflows that support both production efficiency and environmental sustainability.
North America Immigration Law Group (Chen Immigration Law Associates) built the NIW filing around a practical logic that USCIS can verify: the endeavor matters because it strengthens U.S. energy independence while improving operational efficiency and carbon management, and the client is well-positioned because the work already shows measurable technical performance and independent uptake.
Instead of framing the work as a collection of unrelated studies, the petition presented a cohesive research direction. The client is developing a user-friendly interface that integrates simulation outputs with machine learning models to run sensitivity analyses on reservoir and operational parameters that influence long term carbon dioxide containment. In parallel, the client is building predictive models and optimization workflows for water alternating gas injection, using field data and simulation results to improve recovery while reducing gas use and operational costs in mature reservoirs. The client is currently conducting this research in an academic research setting in the United States.
For NIW, the most persuasive cases tend to read less like a résumé and more like a pattern of external validation. We therefore anchored the presentation in objective indicators and then explained why each matters to adjudicators, rather than treating the numbers as self-proving:
- Publication record: 2 peer-reviewed journal articles (including 1 first-authored) and 1 peer-reviewed conference article
- Citation reliance: 13 citations total, including one article with a notably high citation rate for its field and year, supporting the argument that other researchers are using the work as a reference point rather than treating it as routine output
- Peer review trust: documented reviewer service for a major journal, reinforcing that the community views the client as technically credible enough to evaluate others’ work
The NIW filing also included two letters from established experts to connect the technical work to its broader relevance. Strategically, these letters were used to confirm that the client’s research direction addresses real operational and national priorities, and that the client’s methods are already being recognized as useful by others in the field.
“To summarize this letter, [Client] is a vital member of the petroleum engineering research community. Given the need for accurate CO₂ emission prediction, reliable fuel cost estimation, and enhanced tools that support U.S. clean energy goals, it is clear that there is a need for further improvement with respect to these issues. As [Client] has produced valuable research in this regard, there is an ongoing demand for her particular expertise.”
USCIS approved the I-140 EB-2 National Interest Waiver petition. This outcome reflects a case strategy that emphasized substantial merit and national importance, a credible showing that the client is well-positioned through documented research outputs and independent reliance, and a clear explanation of why waiving labor certification would help the United States benefit from this work without unnecessary delay.