变井筒效应下有越流双层合采油藏的压降曲线特征

新疆石油地质 ›› 1992, Vol. 13 ›› Issue (4): 365-371.

变井筒效应下有越流双层合采油藏的压降曲线特征

李治平

西南石油学院开发系四川南充市 637001

收稿日期:1991-01-31 出版日期:1992-12-01 发布日期:2020-07-23

CHARACTERISTICS OF THE DRAW-DOWN CURVES FROM COMMINGLED PRODUCTION OF DUAL ZONE RESERVOIR WETH A CROSSING FLOW AT VARIABLE BOREHOLEEFFECTS

Li Zhiping

Department of Development, Southwest Petroleum Institute, Nanchong Sichuan 637001

Received:1991-01-31 Online:1992-12-01 Published:2020-07-23

摘要/Abstract

摘要： 本文将变井筒储集效应考虑成产量的衰减,并引入有效井径,在参阅有关文献的基础上建立了有越流的双层合采油藏的数学模型,并对数学模型进行拉氏变换,求得了拉氏空间解;运用数值反演技术求得了参数改变下的压降曲线,并对压降曲线特征进行了分析。

关键词: 变井衔储集效应, 产量衰减, 有效井径, 越流

Abstract: The mathematical model for commingled production of dual zone reservoir with a crossing flow has been developed by taking variable borehole storage effects as a decay of production, quoting the effective wellbore radius and refering to the relevant references. With Laplace transform for the model, the Laplace's space solutions ate obtained; by utilizing a numerical inversion technique, the draw—down curves at variable parameters are given in this paper. In addition, an analysis of the characteristics is made for the curves.

Key words: Variable borehole storage effect, Production decline, Effective wellbore radius, Crossing flow

李治平. 变井筒效应下有越流双层合采油藏的压降曲线特征[J]. 新疆石油地质, 1992, 13(4): 365-371.

Li Zhiping. CHARACTERISTICS OF THE DRAW-DOWN CURVES FROM COMMINGLED PRODUCTION OF DUAL ZONE RESERVOIR WETH A CROSSING FLOW AT VARIABLE BOREHOLEEFFECTS[J]. Xinjiang Petroleum Geology, 1992, 13(4): 365-371.