نشریه پژوهش در مهندسی نگهداشت دفاعی
پیاپی 7 (بهار و تابستان 1401)

Proper equipment prioritization is one of the most important challenges in oil and gas drilling operations to improve maintenance programs and optimal inventory management. Therefore, the present study prioritizes the types of equipment in drilling rigs that play an important role in oil and gas exploration and extraction processes. In order to prioritize the equipment, three well-known methods of risk analysis were used, such as the Bow-Tie method, the Crespo Marquez method, and the method presented in the Norsok Z008 standard. The research method was a library survey, and a questionnaire was designed to obtain expert opinions. The focus of the present study is on jack-up type drilling rigs that have been widely used in the coasts of the country. Based on the results of the bow tie method, equipment such as pump and mud tank, mud purification system, diesel engine, power supply rig, well wall pipe and cementing equipment, received the highest priority in terms of crisis. According to the results of Crespo Marquez method, equipment such as diesel engine, power supply rig, top drive set, riser compensator, drilling drill and drilling rim, and according to Norsok Z008 standard, equipment such as diesel engine, rig power supply, top drive set, drill wheel, compensation Riser, hose and burst valves were given the highest priority in terms of criticality. Based on the results of the three methods, the diesel engine set of power supply rig and riser compensator were recognized as the most critical equipment in the jack-up type drilling rig..

It should be noted that in the process of analyzing and interpreting the results of oil analysis, issues such as research and study of engine erosion performance and evaluation and analysis of the relationship between the final state of the engine and the status of components analyzed in oil analysis, are addressed. The analysis examines the components that are effective in analyzing the condition of the engine, what they are and how effective they are. Indicators studied in oil analysis are: Erosive metals such as iron, aluminum, lead, copper, tin, chromium, PQ, viscosity, silicon. Perceptron predicted the final condition of the engine, then according to the results of oil analysis, obtained expert analysis and diagnosis for each sample, and after opening the engine and observing the final condition of the engine, it was concluded that the results of expert analysis and forecast Significantly corresponds to the final state of the engine.

In recent years, our country has been subject to the most severe economic sanctions, and the oil industry has not been immune from these sanctions, so that it is difficult to purchase or renovate equipment in the boycott. The reconstruction and repair process is one of the best alternatives. Also, the uncertainty of the time of the implementation of activities has increased the understanding of project owners from the scheduling of activities and opened up a broader view of the project and the upcoming activities. In this research, the design of an integrated schedule of activities and supply chain for reconstruction projects of drilling rigs under conditions of uncertainty of the time of implementation of activities is presented and the costs of the contractor and suppliers have been observed, and the uncertain scheduling of activities and planning of orders have been made in such a way that the total cost The whole chain is minimized. Given the number of variables and model constraints, the problem is NP-hard. Therefore, to solve such problems, the meta-heuristic methods are used, which produces near optimal solutions in a reasonable time than the exact methods. By comparing the results of exact resolution and meta-heuristic-algorithms, it was found that with increasing problem dimensions, the exact solution time is exponentially exponentially, but the solving time by the meta-heuristic-algorithm has a steady trend that indicates the efficiency and effectiveness of the proposed algorithms.

At last time for using helicopter very difficult due to lack of identification but todays the helicopter very well for transport, any things. The main Identification Factors Effects to Leadership Management for a Helicopter Flight Operational by calculating costs for flight and maintenance planning . For this purpose, to management flight operation, maintenance by availability, sustainability, serviceability factors. In this regard, increasing the capability of operational readiness is one of the most important characteristics for this goal by Flight and maintenance planning model. Diverse factors effect on the operational readiness in helicopter flight systems, for example, availability of the aircrafts and other important components. Scheduling the aircrafts flight aims to manage different components influencing the operational readiness. Scheduling includes the maintaining process to A study on the different models by experiment. Expert method in term of operational readiness in helicopter flight systems are proposed in this paper. The proposed models cover the issue in diverse topics. Todays for maintain and promotion flight operation by management flight operation. Management cost and evaluation credit. security at world will activity company air lines by active flight crew, capability helicopters and pension or emolument.