第40卷第1期
天然气勘探与开发
气用开发
蜀南地区煤层气智能精细化排采技术及管控模式
主维旭
王希友蒋佩贺满江李君军
彭丽莎
中国石油浙江油田公司
摘要煤层气井的产出机理决定了其生产方式必须通过排水降压，排采是煤层气开发中十分重要的环节。四川盘地弱南地区煤岩具有高煤阶、高临界解吸压力、低渗透的特征，规模效益开发面临着巨大的挑战，先进的排采技术与智能精细化管控模式是实现该区城煤层气规模、经济开发的保障，中国石油浙江油田公司在蜀南地区从事煤层气开发近五年，通过引入排采规律指导下的智能排采专用设备，落实煤层气“连续、稳定、爱慢、长期”的排采原则和精细化排采技术路线，针对煤储层特点及煤层气并生产规律，精细划分为排水降压期一憨压期一控压提产期一稳产期一产量递减期等5个排采阶段，系统分析各阶段生产特征及排采风险，总结出了“五分技术攻关、三分管理创新、两份多专业融合”的煤层气管控模式，制定出合理的排采制度和管控办法，并依托智能化设备，实现了精细排采管控，从而降低了储层伤害、提高了单井产量、提升了管理效率、促进了该区煤层气的高效开发。
关键调四川盆地蜀南地区煤层气高煤阶智能排采精细管控
IntelligentandfineCBMproductiontechnologyandmanagement&controlmode
inSouthSichuanarea
WangWeixu,WangXiyou,JiangPei,HeManjiang,Li Junjun,PengLisha
(PetroChina Zhejiang Oilfield Company)
Abstract: The production mechanism of CBM wells allows them to be recovered by water drainage to reduce the pressure, so the recovery by water drainage is an important part of CBM development. The coal rocks in South Sichuan Basin are characterized by aaeae Advanced production technologies and intelligent and fine management & control mode are the basis of large-scale economic develop-ment of CBM in this area. PetroChina Zhejiang Oilfield Company has carried out CBM development in South Sichuan area for nearly five years, The "continuous, stable, slow and long-term" CBM production principles and the fine production routes are implemented seeeesaeea CBM wells, the production was divided into 5 stages, i.e., pressure reduction by draining water, pressure building up, production in-creasing by controlling pressure, stable production, and production decline. The production characteristics and risks in each stage were%ee%e multi-discipline integration" was established. Rational production systems and management & control methods were formulated. By virtue of intelligent equipment, precise management and control over production by water drainage was realized. All these measures aee ciency CBM development.
eae control
煤层气特殊的赋存机理，决定其开采需要通过抽排煤层及邻近水层中的地下水来降低储层压力，从而达到产气条件，其生产过程包括降压、解吸、扩散、渗流多个阶段，具有初期产气量低、生产周期长的特点。影响气井产能的主要因素包括储层地
质条件、压裂改造效果和排采技术，排采技术作为发挥气井最大产能的生产保障，在煤层气开采过程中起着重要作用。我国煤层渗透率普遍较低，应力敏感性强，合理的排采制度和智能精细化管控是保证煤层气井排采成功的关键因素。四川盆地蜀南
第一作者简介：王维旭，1984年生，工程师：中国石油学会石油地质专业委员会页岩气、煤层气学组委员；现从事非常规天然气开发技术研究工作。地址：（645250）四川省宜宾市筠连县海瀛工业园区。E-mail:wangwx85@petrochina.com.cn
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