高酸气田天然气偏差因子计算方法  

Calculation Method of Gas Deviation Factor for High-sour Gasfield

作　　者：黄德明[1] 付德奎[1] 胡杰[1] 陈琳琳[2] 

机构地区：[1]中国石化中原油田普光分公司开发管理部,四川达州635000 [2]中国石化中原石油管理局第七社区,河南濮阳457161

出　　处：《天然气技术与经济》2012年第6期30-33,78,共4页Natural Gas Technology and Economy

摘　　要：利用灰色关联分析方法对DAK、DPR、HY、Cranmer四种迭代方法和BB、Papay两种直接计算方法的计算结果与实验室数据进行关联度计算,得出关联度最大的方法即为最好的计算方法。通过计算可知,普光气田气藏偏差因子的计算应优选DPR(W-A)法和BB(W-A)法,而DPR(W-A)法是最优的计算方法。由于多组分高含硫天然气在不同压力段和温度段表现出不同的压缩性质,因此,分4个压力段进行分析,当各个压力段中关联度的平均值最大时,取得的结果更理想。用"分压力段进行分析(60℃)"的方法计算PX井不同温度段(75℃、90℃、105℃、120℃)的偏差因子,误差更小。To calculate a correlation degree between laboratory data and results from four iterative methods (DAK, DPR, HY and Cranmer) and two direct calculation methods (BB and Papay) have been done by grey correlation analysis. The one with the highest degree should be the best method. Results show that DPR (W-A) and BB (W-A) methods can be optimized for calculating the deviation factor for Puguang gasfield, and the former one is the best. In different pressure and temperature sections, multicomponent high-sour gas shows different compression properties. Analyzed in four pressure sections, it is found that when the average value of correlation degree from each section reaches the maximum, the best result can be obtained. Calculated by the 'analyze in pressure sections (60℃ )' method, deviation factors of PX well in different temperature sections (75℃, 90℃, 105℃ and 120℃) will have less error.

关 键 词：偏差因子 灰色关联 优选 分段计算 

分 类 号：P618.13[天文地球—矿床学]