低渗非均质气藏增压开采合理生产规模研究  

REASONABLE PRESSURE-BOOSTING STIMULATION FOR LOW-PERMEABILITY AND HETEROGENEOUS GAS RESERVOIR

作　　者：张建国[1,2] 艾芳[1,2] 刘锦华 

机构地区：[1]中国石油长庆油田分公司低渗透油气田勘探开发国家工程实验室 [2]中国石油长庆油田分公司勘探开发研究院 [3]中国石油长庆油田分公司对外合作部

出　　处：《天然气勘探与开发》2013年第1期43-45,84,共3页Natural Gas Exploration and Development

基　　金：中国石油天然气股份有限公司科技重大专项"长庆油田气当量上产5千万吨关键技术研究"(编号:2008E-1306)

摘　　要：为提高类似靖边气田的低渗非均质气藏在稳产中后期的增压稳产能力和气田的最终采收率,近5年靖边气田开展了增压开采先导试验,认为增压气井处于低压低产阶段产能较低,增压初期配产偏高将导致气井增压稳产期较短、产量递减快,甚至产量和压力双递减而无稳产期,因此,确定合理的增压生产规模至关重要。在增压试验气井生产动态特征分析基础上,通过精细数值模拟方法预测气井增压生产动态及开采效果,并综合考虑气井生产能力、配套压缩机额定能力以及供求关系来确定气井及增压开采单元的合理生产规模,从而确保增压开采系统平稳、高效地运行。A pilot test of pressure-boosting stimulation has been carried out for Jingbian gasfield with low permeability and heterogeneity for near five years in order to increase its stable production capacity and ultimate recovery in the mid-to-late period of stable production.Results show that(1) gas wells after boosting pressure are in low-pressure and low-yield stage,and their deliverability is lower;and(2) in the early pressure-boosting period,pretty high well proration may suffer some problems,including very short period with stable production,very fast production decline,especially simultaneous production and pressure decline without a stable production period.So,it is important to determine reasonable production capacity.In this paper,based on the analysis on production performance' characteristics,well production's capacity,rated capacity of auxiliary compressor and supply-demand relationship,this reasonable production capacity is determined by means of numerical simulation so as to ensure a stable and highly efficient production after boosting pressure.

关 键 词：靖边气田 低渗透气藏 增压开采 数值模拟 合理配产 

分 类 号：TE37[石油与天然气工程—油气田开发工程]