The book describes the production technology and related subjects in five chapters; 1 Petroleum Drilling Operation, 2 Well Logging, 3 Well Completion, Petroleum Recovery Operation and 5 Petroleum Surface Processing. The book is compiled in response to the wishes of diversified students (different age group, gender, position, educational back-ground, proficiency in English language) taking petroleum technology course in evening classes. The scenario from this class room may be scaled up to universal level of diversified readers. Thus, the book is of interest to all the students and engineers, technicians and geologists working in petroleum institutions and is applicable from undergraduate students to the professional in the industries. The discussion in the book gives the touch of class room presentation/lecture. The book is expected to be first choice of the student as they readers will find the book rewarding and unique. The discussion of the subject is general covering full spectrum of the subject.