This study examines the dialectics of illicit refining in the Asari-Toru Local Government Area using Augustus De Morgan’s formal logic of negation and model theory as a methodological framework. The challenge at hand is the simplistic juridical binary of legality versus illegality, which obscures the deeper structural conflicts in Niger Delta petroleum governance. The study uses a model in which Ecological Integrity (P) and Communal Welfare (Q) are conjunctive predicates of sustainability (P • Q). The prevailing condition approximates their simultaneous negation (¬P • ¬Q), a conjunctive catastrophe illuminated by De Morgan’s transformation laws. The study is significant because it extends formal logic beyond symbolic abstraction into socio-political diagnostics, demonstrating unlawful refining as a definite negation within a restricted universe of discourse determined by petroleum capitalism. The goal is to view artisanal refining as a counter-negation caused by institutional exclusion rather than a criminal deviance. Its goals include formal truth-functional derivation, semantic validation at empirical sites, and a model-theoretic examination of oil governance. The analysis concludes that forceful enforcement reproduces negation by addressing surface illegality without restoring the necessary balance of environmental safety and economic inclusiveness. It advocates for conjunctive reconstruction, which includes participatory modular refining under regulation, ecological restoration in affected communities, community-inclusive petroleum governance, and continual truth-conditional environmental monitoring. Only by restoring the mutual satisfaction of ecological integrity and communal welfare can the Asari-Toru negative spiral be intellectually and materially overcome.