Technical English has always been an issue of interest in the field of English as a foreign language. Terminology of English for general purposes has taken more of an interest in teaching English for Specific Purposes nowadays and the demands can be seen on a daily basis. English is of great significance for academic and professional excellence of people of technology. Various investigations show that engineers face difficulties in their jobs due to their language skills and that is the reason we are trying to focus on enhancing their skills without addressing lack of efficient language usage in technical context. There have been a personal concern in satisfying the people' expectations by means of a skills-based terminology and hence, I did researches on the field of specific oil and gas terminology and brought to you some sections of this. The aim of this article is to present more a practical basis for the technical terminology than a theoretical one; this paper emphasizes need analysis in designing specific materials for engineering. This work presents a section of the oil and gas terminology of the English Language vice versa General English; the article also identifies the conceptual system with the differences and the features of the petroleum field.