鄂尔多斯盆地长庆气区天然气开发前景  

Natural gas development prospect in Changqing gas province of the Ordos Basin

作　　者：何江川 余浩杰 何光怀 张吉[2,4] 李娅[2,4] HE Jiangchuan;YU Haojie;HE Guanghuai;ZHANG Ji;LI Ya(PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710018,China;National Engineering Laboratory of Low-Permeability Oil&Gas Exploration and Development,Xi'an,Shaanxi 710018,China;Consulting Center,PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710018,China;Exploration and Development Research Institute,PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710018,China)

机构地区：[1]中国石油长庆油田公司,陕西省西安710018 [2]低渗透油气田勘探开发国家工程实验室 [3]中国石油长庆油田公司咨询中心 [4]中国石油长庆油田公司勘探开发研究院,陕西省西安710018

出　　处：《天然气工业》2021年第8期23-33,共11页Natural Gas Industry

基　　金：国家科技重大专项“鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程”(编号:2016ZX05050);中国石油天然气股份有限公司科技专项“长庆气田稳产及提高采收率技术研究”(编号:2016E-0509)。

摘　　要：目前天然气在我国一次能源消费结构中占比偏低,对外依存度较高。中国石油长庆油田公司(以下简称长庆油田)所在的鄂尔多斯盆地长庆气区是我国四大天然气生产基地之一,承担着保障民生用气、促进社会经济健康发展的重要职责。近年来,长庆油田积极落实“大力提升国内油气勘探开发力度”指示精神,制定了二次加快发展战略,2020年天然气年产量达到448.5×10^(8) m^(3)、油气当量突破6000×104 t,夯实了“西部大庆”的行业地位。为了进一步促进长庆气区天然气持续稳产、实现提质增效的目标,概述了长庆气区天然气勘探开发情况,分析了天然气开发的形势与挑战,制定了开发技术对策,指明了天然气开发前景。研究结果表明:①长庆气区天然气勘探开发经历了4个阶段,形成了低渗透碳酸盐岩、低渗透砂岩、致密砂岩3种类型气藏开发的主体技术;②该区天然气开发正面临着已开发气田储量动用程度不充分、产量递减较快、剩余未开发储量分布复杂等6项挑战,进而有针对性地提出了井网加密、扩边增储、次产层挖潜、气井精细管理等26条开发技术对策;③该区天然气开发的发展方向和目标是老气田稳产和新区上产并重、常规气与非常规气攻关并举。结论认为,长庆气区天然气年产量将保持稳中有升的良好态势,“十四五”期末将突破500×10^(8) m^(3)且保持长期稳产,将助力我国能源消费结构优化和“双碳”目标的实现。At present,natural gas accounts for a low proportion in China's primary energy consumption structure and is highly dependent on foreign sources.Changqing gas province of the Ordos Basin where the PetroChina Changqing Oilfield Company(referred to as Changqing Oilfield)is located is one of China's four major natural gas production bases.It bears the important responsibility for ensuring people's livelihood and promoting the healthy development of social economy.In recent years,Changqing Oilfield actively implements national instructive spirit on vigorously promoting domestic oil and gas exploration and development strength and formulates the secondary acceleration development strategies.Its annual natural gas production in 2020 reaches 448.5×10^(8) m^(3) and oil and gas equivalent exceeds 6000×104 t,tamping its important position of"Western Daqing"in this industry.In order to further promote the continuous stable production and realize the goal of quality and efficiency improvement in Changqing gas province,this paper analyzes the situations and challenges of natural gas development in this gas province,prepares the development technological countermeasures and forecasts the natural gas development prospect.And the following research results are obtained.First,the natural gas exploration and development in Changqing gas province is divided into four stages and the main technologies for the development of low-permeability carbonate gas reservoirs,low-permeability sandstone gas reservoirs and tight sandstone gas reservoirs are formed.Second,the natural gas development in Changqing gas province faces six challenges,such as low reserve production degree,sharp decline of production rates and complex distribution of remaining undeveloped reserves of developed gas fields.And twenty-six development technological countermeasures are put forward correspondingly,such as well pattern thickening,extension and reserve increase,secondary production layer potential tapping and fine gas well management.Third,the development direc

关 键 词：鄂尔多斯盆地长庆气区 中国石油长庆油田分公司 天然气开发 形势与挑战 技术对策 开发潜力 开发前景 

分 类 号：TE37[石油与天然气工程—油气田开发工程]