第39参第3期 2017年5月
石油钻采工艺
OILDRILLING &PRODUCTION TECHNOLOGY
文章编号：10007393(2017）03025908
DOI:10.13639/j.odpt.2017.03.001
Vol. 39 No. 3 May 2017
低渗气井压力和产量递减规律及其影响因素
乔向阳李靖’冯东？冯婷婷】张磊陈宇？
1.陕西延长石沟(集图)有限责任公司研究院；2.中国石油大学(北京)石沟工程教育部重点实验室
引用格式：乔向阳，李靖，冯东，码峰峰，张磊，陈宇.低渗气井压力和产量遇减规律及其影响圈素[J］.石油钻采工艺， 2017,39(3);259-266
摘要：影响低渗气藏气并生产动态及递减规律的因素众多，区别各类图素的影响规律对预测气田生产动态、指导气田合理高效开发具有重要意义。将低渗气井压力和产量递减规律影响因素分为储层静态因素和生产动态因素两大类，结合实际气藏生产单期定产降压、后期定压降产的开发路线，分别研究了气并定产降压阶段压力递减特征及定压降产阶段产能遇减特征，并基于数值模拟手段对其影响规律进行了综合分析。结果表明：气并生产早期压力递减规律主要受气并控制储量、配产、产水等因素影响；生产后期产量逆减规律主要受渗流能力、并间干扰、产水等固素影响。同时，储层静态因素是气藏开发潜力的先决条件，而生产动态固素则往往可以通过合理的方法进行优化或调整以使气并达到最好的生产状态，在实际生产中需要做到“动静结合，根据气田的开发目标对各生产动态因素进行详细描述，指导调整生产制度或验证气藏认识的准确性。
关键词：低渗气田；气并；压力；产量；递减规律；储层静态参数；生产动态；定压降产；定产降压
中图分类号：TE319
文献标识码：A
Pressure and production decline laws of low-permeability gas wells and their influential factors
QIAOXiangyangI JingFENGDongFENG TingtingZHANG Lei,CHEN u 1. Research Institute, Shaani Yanchang Petrolerm (Group) Co. Lad., Xi'an 710075, Shaauxi, China;
2. Key Laboralory of Petroleum Engineering Education Minisby, China University of Pefroleum (Beijing), Beijing 102249, Chind
Citation: QIAO Xiangyang, LI Jing, FENG Dong, FENG Tingting, ZHANG Lei, CHEN Yu. Pressure and production decline laws of low-permeability gas wells and their influential factors [J ] . Oil Drilling & Production Technology, 2017, 39(3): 259-266.
Abstract: Production performance and decline laws of gas wells in low-permeability gas reservoirs are affected by multiple fac-tors, so distinguishing the influential laws of each factor is significant to predict the production performance of gas wells and guide the efficient development of gas fields. The factors influencing pressure and production decline laws of low-permeability wells are divided into two types (i.e., static reservoir factors and dynamic production factors) based on the development concept of constant-production eosseses influential laws were comprehensively analyzed by means of numerical simulation. It is indicated that pressure decline law of gas wells in the early stage of production is mainly affected by gas well controlled reserves, production proration and water production and that in the late stage is mainly dominated by scepage capacity, multi-wellinterference and water production. Static reservoir factors are prereq uisite to the development potential of gas reservoirs, and dynamic production factors can be optimized or adjusted by means of rational methods so that gas wells will be in the best production state. In the actual production, static and dynamic factors shall be combined. It is necessary to describe the dynamic production factors in detail according to the gas field development target so as to provide the guidance for production system adjustment and verify the aceuracy of gas reservoir understanding.
Key words: low-permeability gas field; gas well; pressure; production; decline law; static reservoir parameter; production perfor-mance; constant-pressure production decreasing; constant-production pressure dropping
基金项目：国家白然科季基金重大项目“页岩油气高效开发基础理论"（编号：51490654)。
第一作者：乔向阳（1969-),1996年毕业于西南石油学院沟气田开发工程专业，茂工学项士学位，现主要从事天然气地质、沟气田开发研
究，高级工程师。通试地址：(710075)陵西省西安市高新区科技二路75号建长石油201宝。E-mail：547615282@qq.com
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