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在油藏压力条件下,利用加速量热仪(ARC)对三个油藏的原油放热性进行了测定。Wolf Lake重油和Clair中质油放热性实验采用干净的、含有3%高岭石的石英砂模拟油藏储层,而对于Athabasca沥青矿,则模拟原始油藏状态,测定其油砂放热性。Wolf Lake重油油藏和Clair中质油油藏在实验中水饱和度较高,这是水驱或蒸汽驱后的油藏状态。对Athabasca沥青矿进行的另一个放热性实验采用的是低饱和度原油的油砂,但是没有对原始盐水饱和度进行调整。虽然Clair中质油在所有温度范围内都具有较好的放热性,但是初始分解温度较Athabasca油砂高很多。活化能的计算表明Athabasca油砂在低温氧化阶段反应活性非常强。原油放热性的测定表明:以上三个油藏都具有很好的实施火烧油层开采的潜力。
Under reservoir pressure conditions, the crude oil exothermicity of three reservoirs was determined by means of accelerated calorimeter (ARC). Wolf Lake heavy oil and Clair medium oil exotherm experiments using clean, containing 3% kaolinite quartz reservoir simulation reservoir, and for Athabasca bitumen ore, the simulation of the original reservoir state, measured oil sands exotherm Sex. Wolf Lake heavy oil reservoirs and Clair medium oil reservoirs have high water saturations during the experiment, which is a reservoir condition after water flooding or steam flooding. Another exothermic experiment with Athabasca bitumen ore used oil sands of low saturation oil but did not adjust for the original brine saturation. Although Clair medium oil has good exothermicity over all temperature ranges, the initial decomposition temperature is much higher than Athabasca oil sands. Calculation of activation energy shows that Athabasca oil sands are highly reactive at low temperature oxidation stage. The determination of crude oil exotherm shows that all three of these reservoirs have good potential for exploiting pyrophoric beds.