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含(油)气流体体系压力及相变规律初步研究

胡文宣 符琦 陆现彩 Zhenhao Duan   

  1. 南京大学地球科学系
  • 收稿日期:1996-12-20 修回日期:1996-12-20 出版日期:1996-12-20 发布日期:1996-12-20

STUDY OF PRESSURE AND PHASE TRANSITION OF GAS (OIL)-BEARING FLUIDS SYSTEM

Hu Wenxuan1, Fu Qi, Lu Xiancai1, Zhenhao Duan2   

  1. 1. Dept. of Earth Sciences, Nanjing University, 210093; 2. Dept. of Chemistry, University of California, San Diego, USA
  • Received:1996-12-20 Revised:1996-12-20 Online:1996-12-20 Published:1996-12-20

摘要: 本文从流体体系的观点出发,应用物理化学原理,分别对含(油)气流体的流体压力和存在相态进行了研究,着重阐述了流体压力的组成和体系压力的影响因素及其定量计算方法,重新界定了静水压力和异常压力及其相互关系,对含气流体在运移过程中的存在相态进行了分类,并分别探讨了流体自身成分、温度和压力对流体相变规律的影响,为定量研究流体压力和运移相态提供了新的思路。

Abstract: Based on principles of physicochemistry, this paper studies fluid pressure and phase states of gas (oil) bearing fluid systems. The fluid pressure consists of hydrostatic pressure and system pressure. The later is a function of fluid properties (composition, volume and temperature) of the fluid system, and it can be quantitatively calculated by relevant components. According to components and saturation degree of gas and oil, the phase states are classified into eight types. Then, major factors (temperature, pressure and composition) influencing the phase transition are discussed by using equation of state for a typical fluid system. This provides a new approach to quantitative study on properties and states of gas (oil) bearing fluid systems.