2 research outputs found
Ensemble Optimization of CO2 WAG EOR
No full textCO2 Water Alternating Gas (WAG) EOR (Enhanced Oil Recovery) is a method to improve oil recovery by combining improvement in displacement efficiency from CO2 injection and improvement in sweep efficiency from injecting water in alternating sequence with CO2. This thesis focused on using the Ensemble Optimization method to improve the economics of this project in anonymous field X with discounted NPV (Net Present Value) as the objective function. The optimized variable is the injection BHP (Bottom Hole Pressure) for water and gas injection with fixed injection cycle of 6 months on each of water and gas cycle. The optimized result was compared with the result from the base case CO2 WAG with maximum injection BHP on each of the water and gas cycle and it showed promising result by optimizing the amount of injected water and gas on each injection cycle by controlling them from the injection BHP. Optimized strategy gave $ 30 million incremental in discounted NPV or equal to 4% increase in discounted NPV compared to the discounted NPV from the base case strategy contributed from higher oil production and better CO2 utilization than the base case.Master Petroleum EngineeringGeoscience & EngineeringCivil Engineering and Geoscience
Tarekat and Social Change: The Influence of Tarekat Movement in Sukamanah Rebellion, Against Japan in 1944
Get PDFThis paper discusses the influence of the tarekat movement in the rebellion against Japan in 1944 from the pesantren in Sukamanah, Tasikmalaya, West Java. After the treaty of Kalijati, 1942, Japan took full control of the land of West Java. Sociologically it was considered to drain and enslave the people of Sukamanah, and theologically coupled with the Seikerei ritual imposed by the Japanese and considered by the leader of Sukamanah, Zaenal Mustafa, as a form of violation of Islamic principles became the motivation for the rebellion. This paper uses the historical method with a social approach. This writing uses the point of view of Sartono Kartodirdjo's social-religious approach in seeing the symptoms of resistance to Colonialism based on religious elites and the impact of a significant social change due to the oppression of colonialism which here is Japanese Imperialism, Tarekat being the only base of resistance. The final finding is that Zaenal Mustafa's role as a figure who further developed Tarekat Syattariyah, although political resistance in Java was very dominant was closely related to the development of the Tarekat Qadiriyah wa Naqsabandiyah community into a new force of resistance in West Java
