Abstract Formal specifications are essential for ensuring the accuracy, reliability, and efficiency of complex systems, such as those found in the oil and gas industry. This paper examines the significance of formal specifications in the design and analysis of oil and gas sector-specific systems. In this industry, where safety and precision are critical, formal specifications offer a systematic approach to defining system requirements, behaviors, and constraints. The integration of simulation capabilities within domain-specific modeling languages enhances this approach by enabling dynamic analysis and performance evaluation of pipeline systems. By employing formal methods like mathematical logic and modeling languages, engineers can accurately represent the intricate details involved in system design, while simulation provides valuable insights into system behavior under various operational conditions. To illustrate the value of requirements in the oil and gas industry, this paper introduces a modeling language based on domain-specific modeling methodology, augmented with simulation features. Predicate calculus is utilized to ensure precision, clarity, and unambiguous communication among stakeholders. Furthermore, formal verification and validation techniques using MATLAB were applied to identify potential issues and ensure adherence to industry standards and regulatory guidelines. The results demonstrated an accurate and dynamic representation of the pipeline system, offering enhanced insights for refining design workflows and optimizing system performance. Keywords Oil and gas industry, Design and analysis systems, Formal methods, Verification and validation, Requirements, Efficiency.