Objectives/Scope Oil production optimization under economical and operational constraints is of paramount importance to most E&P companies. Enhancing production from mature oilfields is often achieved through artificial lift operations. Decline in well performance is observed in most aging giant waterflooded reservoirs in Abu Dhabi. The objective of this paper is to propose an efficient method to improve well performance while optimizing long-term field development plans both for minimum investment and maximum recovery. Methods, Procedures, Process This paper presents a dynamic field management strategy to optimize the gas lift allocation with groups of wells performing under different operational constraints. The gas lift allocation optimization is the cornerstone of the field development plan optimization to increase the recovery from existing wells by applying optimal gas lift injection, to optimize the infill drilling planning to achieve the mandated target, and to minimize the requirements for infill drilling. Despite the large number of gas-lift optimization procedures proposed in the literature, this paper describes a very efficient methodology that is suitable for long-term field developments. In addition to optimization of individual well performance, we propose a new logic for gas lift allocation based upon well potential, history, and performance and the long-term investment planned for the field. This required dynamically to change the logic of allocation mechanism in real-time management manner which proved its efficiency when applied to a giant waterflooded reservoir suffering from water override and high water cut. The method’s logics implemented in terms of fields entities within a simulator field management framework are independent of reservoir model and can be easily scaled and applied to any other reservoir. Results, Observations, Conclusions The implementation of the proposed gas-lift based optimization strategy allowed to achieve the mandated field production by increasing the lifetime of existing wells, while delaying and reducing the number of infill wells. This resulted in a much more economic strategy while minimizing cost and risks of drilling activities. Applying this unique workflow, allow to activate the gas lift optimization function while the field still on plateau, which was not possible before following the default logic in all the simulators. The result showed significant improvement on the field scale in terms of gas lift and facility requirements as well as field production performance. In addition to that, realistic gas lift requirements was observed compared with the conventional methods. Economic analysis is still ongoing, however, huge cost saving is expected and will be presented in the technical paper. Novel/Additive Information In current economic situation, making field development more profitable can be achieved by applying the proposed approach which will help establishing solid foundation to develop fields at scale. This is due to the flexibility and intelligence of the logics applied in the methodology which combine both constraints from operations and uncertainty in the long run. As described, the method is generic and can be applied to other fields following the same workflow steps.
This paper reviews the development of regional laying hen farming in Indonesia in an illustrative way, in addition to the economic contribution made by small farmers to the development of the country through the production of laying hens on their modest holdings and their ability to support self-sufficiency. By achieving the largest possible production of eggs and chickens, the aim is to determine the contribution of laying hens to the national economy and the self-sufficiency of small farmers. The study focused on small farmers in the regions of North Sumatra, West Java, Central Java, East Java, South Sulawesi, and West Nusatenggara. It was concluded from this study that the small farmers who had little capital for raising laying hens benefited from the net present value of IDR 36,213,611 in their favor. 4,233 heads were used, resulting in an average of 5,644 kg of eggs per month, IDR 98,996,826,00 in average monthly revenue, and IDR 16,418,183 in net profit. This meant that the laying hens’ business was profitable for both community and personal gain.
ABSTRACT Al- Wasilah is a legitimate sacrifice by which the worshipper attains a gool and fulfills a desire. Al- tawassul is to draw closer to Allah with that nearness, and tawassul is the request of the caller based on that kinship. There is no one in the law of Islam that is required and called except for Allah, and this is what has been legislated for this nation in the book of its Lord and on the tongue of its Prophet. Since Al-tawassul is a purely doctrinal issue that revolves between disbelief and faith, so the worshipper should perform it based on clear evidence that cannot be interpreted, keeping away from ambiguous ones, weak evidence, and correct conjecture, meaning that Al-tawassul is either begging with Allah’s attributes and names, or with what He has a valid belief, or because of his good deeds, or because of the supplication of others. As for what was not provided with definitive evidence from the wise legislator of its permissibility, then it is better for the worshipper to leave it and stay away from it because of the suspicion that the perpetrator might expect in what does not please Allah, and whoever avoids suspicions has cleared himself of his religion and his honor.
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