苏里格南区低渗气藏产能评价及挖潜研究

发布时间：2018-01-13 14:29

本文关键词：苏里格南区低渗气藏产能评价及挖潜研究　出处：《成都理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：近年来,随着全世界对石油与天然气能源需求量的不断增大,低渗气藏的勘探开发越来越受到人们的重视。针对低渗气藏的开发特征,提出强有力的开发调整措施,实现气藏规模有效开发,是实现天然气行业持续有效协调发展的重要保障。鄂尔多斯盆地苏里格气田,是典型的大面积低丰度致密砂岩气藏,是近年来我国发现的储量最大的气田。苏里格气田南区是苏里格气田重要的勘探开发区,随着气田的开发,天然气生产任务不断加大,但在开发过程中出现气井产能低、压力下降块、产量递减快、稳产能力差等特征,探究并实现区块稳产是目前生产的迫切需求。本文充分利用研究区气井生产前期勘探及开发资料,分析研究区产能及生产变化特征、影响因素、稳产潜力,选择试验区进行数值模拟研究,制定出合理的开发调整方案,以提高低渗气藏开发效果。本文研究主要取得了以下成果和认识:1、通过研究区气田地质特征的认识,研究区储层物性差、非均质性强、储层连通性差、储量丰度低、孔隙度及渗透率较低。2、针对低渗气藏产能评价及递减分析方法进行研究,并对研究区进行产能评价及生产递减分析,研究区气井产能普遍较低,单井生产递减快、稳产能力差。3、目前开发效果差受到地质及开发两方面综合影响。4、对生产井开发潜力进行分类评价,递减规律预测单井累积产量以低产为主;气藏的分层动用情况差异大;合理配产,确定研究区的合理生产能力。5、利用气藏工程及气藏数值模拟技术,研究稳产措施:开发层系划分、确定补孔井与补孔层位,完善井网,确定合理的采气速度,并进行增压开采及压裂工艺的优化。
[Abstract]:In recent years, along with the whole world for oil and gas energy demand increasing, gas reservoir exploration and development has attracted more and more attention. According to the development characteristics of low permeability and low permeability gas reservoirs, put forward the development of strong adjustment measures, to achieve the scale of gas reservoir is an important guarantee for the effective development of the natural gas industry the effective coordination of development. Ordos basin Sulige gas field is a typical large area, low abundance of tight sandstone gas reservoir, is found in China in recent years, the largest reserves of gas field. The Sulige gas field, Southern District is an important area of Sulige gas field exploration and development, with the development of the gas field, natural gas production continues to increase, but in the development process low productivity, pressure drop, production decline fast, stable ability and other characteristics, to explore and realize stable block is the urgent need of production at present. This paper makes full use of the study area wells students Early exploration and development data, analysis of the study area and production capacity variation characteristics, influencing factors, yield potential, selection of test area was studied by numerical simulation, formulate reasonable development adjustment plan, in order to improve the development effect of low permeability gas reservoir. This paper mainly made the results and understanding: 1, through the understanding of Geological Characteristics Study on the gas field, the reservoir physical property is poor, strong heterogeneity, reservoir connectivity, low abundance, low porosity and low permeability of.2 for low permeability gas reservoir productivity evaluation and decline analysis methods were used to study and study area capacity evaluation and production decline analysis, the study area of gas well productivity generally low, single well production decline fast, stable ability of.3, the poor development effect affected by the two aspects of Geology and development of.4, the classification and evaluation of production wells development potential, prediction of single well cumulative production decline law Based on low productivity; stratified gas reservoir with large differences in the situation; rational allocation, the research area of reasonable production capacity of.5, by using gas reservoir engineering and reservoir numerical simulation technology, the research measures: development layer division, determine the fill hole wells with perforation, perfect well network, the determination of reasonable mining the gas velocity and pressure, optimizing mining and fracturing technology.

【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE328

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