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变工况条件下高温高压饱和蒸汽密度补偿模型的研究

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Indexed by:期刊论文

Date of Publication:2006-07-25

Journal:计算机测量与控制

Included Journals:ISTIC、CSCD

Volume:14

Issue:7

Page Number:890-892

ISSN No.:1671-4598

Key Words:饱和蒸汽;三次样条插值;最小二乘法;流量测量

Abstract:在油田的稠油热采中,应用高温高压饱和水蒸汽提高采收率;饱和蒸汽的工作压力随油井深度在3~15MPa范围内变化,这给饱和蒸汽流量的精确测量带来了困难;研究建立高精度、宽范围的密度补偿模型对饱和蒸汽流量进行精确测量;利用3次样条插值增加压力大于10 MPa的样本点,然后利用最小二乘法拟合出2~15 MPa适用的饱和蒸汽密度补偿方程;经过辽河油田某注汽站的实际应用表明,采用该模型提高了饱和蒸汽流量的测量精度,取得了较好的效果.

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