长庆油田天然气勘探开发进展与“十三五”发展方向

2013年中国石油长庆油田公司(以下简称长庆油田)在鄂尔多斯盆地建成我国最大的油气生产基地,2015年长庆油田天然气产量达到375×108 m~3。为了持续稳产和提质增效,首先总结了"十二五"期间长庆油田天然气勘探开发的成果,分析了天然气发展的有利条件:1天然气资源丰富;2勘探开发主体技术日趋成熟;3精细化管理水平不断提升;4天然气市场需求潜力大。然后梳理了长庆油田天然气发展所面临的挑战:1资源劣质化趋势明显;2已开发气田稳产能力减弱;3低产井随时间延长不断增多;4天然气市场供需矛盾显现。进而指出了"十三五"期间长庆油田天然气勘探开发的发展方向和目标:1天然气勘探围绕上古生界致密气、下古生界碳酸盐岩和新区新领域3个层次展开,实现天然气储量的快速增长及勘探领域的有序接替;2合理进行开发规划,重点做好老气田稳产工作,提高致密气采收率,加强新区产能建设,实现长庆气区天然气年产量稳中有升;3预计到"十三五"末,长庆油田天然气年产量将达到400×108 m~3。

Natural gas exploration and development in the PetroChina Changqing and its prospect in the 13th Five-Year Plan

The PetroChina Changqing Oilfield Company (hereinafter referred to as the PetroChina Changqing) built the largest oil and gas production base of China in the Ordos Basin in 2013, achieving the yearly natural gas production of 375×10⁸ m³ in 2015. For the further sustainable and stable production and quality and benefit improvement, such great achievements made in the 12th Five-Year Plan were first summarized, and the relevant favorable conditions for natural gas development were also analyzed as follows: abundant natural gas resources; increasingly mature E&P technologies; continuously improved delicacy management; and a surging demand for natural gas. Then, challenges to natural gas development were also discussed, including obvious deterioration of natural gas resources; diminished capacity of stable production of produced gasfields; increasing number of low-yield wells; and prominent supply-demand contradiction in present natural gas market. Finally, its prospect in the 13th Five-Year Plan was studied: to carry out natural gas exploration with focus on Upper Paleozoic tight gas, Lower Paleozoic carbonate rocks, and new areas and new domains, so as to achieve rapid growth of natural gas reserves and orderly replacement in exploration domains; to make rational development planning with focus on the stable production of mature gasfields; and to enhance tight gas recovery and strengthen capacity building in new areas, so as to achieve a steady rise of annual natural gas production in the giant gas province. It is expected that by the end of 13th Five-Year Plan period, the PetroChina Changqing will achieve its annual natural gas output of up to 400×10⁸ m³.