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首页> 外文会议>SPE Asia Pacific improved oil recovery conference (APIORC 01) >Evaluation of CO_2 Gas Injection For Major Oil Production Fields in Malaysia – Experimental Approach Case Study: Dulang Field
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Evaluation of CO_2 Gas Injection For Major Oil Production Fields in Malaysia – Experimental Approach Case Study: Dulang Field

机译：马来西亚主要油田的CO_2注气评价-实验方法案例研究：杜朗油田

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In meeting the challenge to improve oil recovery throughrnimplementation of IOR techniques, Dulang field was selectedrnto study the possibility of CO2 injection as a potential recoveryrnmethod. Dulang was chosen as the candidate because of therncomplete suite of information on this field and the availabilityrnof CO2 source within Dulang and nearby fields. The workrnfocused on characterizing the oil and oil - CO2 interactionsrnthat was performed through phase behavior studies,rnvaporization test and displacement tests.rnStudies conducted indicates that at the reservoirrntemperature of 215OF, CO2 injection would not be able tornachieve miscibility with the crude oil at the current reservoirrnpressure, or even if the pressure is increased to the initialrnreservoir pressure. Equation-of-State (EOS) model also showsrnthat the Multiple Contact Miscibility Pressure (MCMP) forrnCO2 and produced hydrocarbon gas is 3230 psig and 3340rnpsig respectively. This pressure is significantly higher than therninitial reservoir pressure of 1800 psig.rnVaporization of Dulang crude by pure CO2 and the CO2-rnrich produced gas was studied. The laboratory study suggestsrnsignificant vaporization of 15% of the stock tank oil with purernCO2. However, based on Equation of State, the vaporizationrnranges from 2 - 5 % with produced gas at operating reservoirrnpressure of 1400 - 1800 psig.rnIn view of the above, the potential recovery process is anrnimmiscible process using produced gas containing high CO2rnfor cost optimization. In addition, the water alternating gasrn(WAG) process may improve mobility control and sweeprnefficiency. Detail studies involving WAG Composite Core, Grn& G Modeling and Numerical Simulation are currently ongoingrnfor identified location of a pilot project.
机译：为了应对通过实施IOR技术提高采收率的挑战，选择了Dulang油田来研究注入CO2作为潜在采收方法的可能性。之所以选择Dulang作为候选者，是因为该领域的信息非常完整，并且Dulang及其附近领域内的二氧化碳来源也很丰富。该工作着重于通过相行为研究，蒸发试验和驱替试验来表征油与油-CO 2的相互作用。进行的研究表明，在油藏温度为215OF时，注入CO 2不能在当前油藏压力下与原油混溶。 ，或者即使压力增加到初始储层压力。状态方程（EOS）模型还显示，二氧化碳和产生的烃类气体的多接触混溶压力（MCMP）分别为3230 psig和3340 psig。该压力明显高于1800 psig的初始储层压力。研究了纯净二氧化碳和富含二氧化碳的天然气对杜朗原油的汽化作用。实验室研究表明，纯净的二氧化碳会使15％的储罐油显着蒸发。但是，根据状态方程，在工作储层压力为1400-1800 psig的情况下，采出气的汽化率范围为2-5％。鉴于上述情况，潜在的回收过程是使用混入高二氧化碳的采出气以实现成本优化的不混溶工艺。另外，水交替煤气（WAG）工艺可以改善流动性控制和扫除效率。目前正在进行有关WAG复合岩心，Grn＆G建模和数值模拟的详细研究，以确定试点的位置。

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