榆林气田生产动态描述与地质因素分析

DESCRIPTION OF PRODUCTION PERFORMANCE AND ANALYSIS OF GEOLOGIC FACTORS IN YULIN GAS FIELD

文章通过描述气井的生产情况,从开发和地质两个角度对榆林气田的生产动态进行了描述和分析,研究了各井区储层对生产动态的影响。把陕141井区气井分成了实际生产能力超过设计方案的井、达不到设计要求的井和与设计相符的井等3类,把榆林南区的生产井分成稳产气井、主砂带内部达不到方案设计要求的井、在主砂带边部生差能力差的井。结合该气田各井区实际生产情况和储层特征,通过绘制各种等值线图,从宏观上描述了榆林气田生产井的产能特征,分析了产层基本生产动态以及地质因素对产能的影响,这为以后开发井的部署、提高产量提供了理论依据。

Based on description of gas well performances, the production performance of Yulin gas field is described and analyzed in respects of gas field development and geology, and the influences of the reservoirs in each wellblock on production performance are studied. The gas wells in Shaan 141 wellblock are divided into 3 groups, with the real deliverability being over, below and equal to the designed values respectively. The gas wells in the southern block of Yulin gas field are also divided into 3 groups. The first group of producers is in stable production, the second group located in the main sandbody has deliverability below the designed value, and third group positioned on the edge of the main sandbody has low deliverability. Based on the real performances and reservoir characteristics in each wellblock of the gas field, the deliverability characteristics of the gas wells in Yulin gas field are macroscopically described and the basic performances of the pay zones and the influences of geologic factors on deliverability are analyzed through drawing various isograms. This study provides a theoretical basis for the deployment of development wells and the boost of gas production.