文章摘要
川西致密气藏水平井经济极限含水饱和度研究
Study on the economic limit water saturation of horizontal well in tight sandstone gas reservoir in west Sichuan
投稿时间:2018-06-26  修订日期:2018-09-20
DOI:
中文关键词: 水平井  含水饱和度  渗流规律  开发效果  经济极限含水饱和度
英文关键词: Horizontal well  Water saturation  Law of seepage flow  Development effect  Economic limit water saturation.
基金项目:国家科技攻关计划
作者单位E-mail
刘 露 中国石化西南油气分公司勘探开发研究院 110415lu@163.com 
摘要点击次数: 48
全文下载次数: 
中文摘要:
      水平井作为川西致密砂岩气藏开发的主要手段之一,随着优质储层的逐渐动用,高含水饱和度制约了水平井进一步开发。本文以川西致密砂岩气藏不同储层类型水平井为研究对象,以岩心实验及数值模拟技术为手段,根据水平井生产动态特征、渗流规律及对采收率的影响分析,深刻揭示含水饱和度对水平井开发效果的影响。并利用现金流法和容积法绘制不同气价条件下不同储层类型井的经济极限含水饱和度图版,为下一步高效经济部署水平井提供有力的理论依据。研究结果表明:在当前气价下,新场沙溪庙组气藏水平井经济极限含水饱和度为26.35%~67.5%。其中I类储层部署水平井均具有较好经济效益;II类储层在含水饱和度52~55%范围内部署水平井可获得较好经济效益,在含水饱和度55~62%范围内部署短轴水平井也可获得经济利益;III类储层在目前技术条件下部署水平井任何经济效益。
英文摘要:
      Horizontal well is one of the main methods for the development of tight sandstone gas reservoir in west Sichuan.The high water saturation restricts the further development of horizontal Wells with the gradual use of high-quality reservoir.In this paper, This tight sandstone gas reservoir in west sichuan different reservoir types of horizontal Wells as the research object, by means of core experiment and numerical simulation technology, based on the production performance of horizontal Wells, the law of seepage and the effect on the recovery factor analysis, reveals the influence of water saturation on horizontal well development effect.And using the cash flow method and volume method to draw economic limit water saturation chart in different gas price and different reservoir types well.It provides a powerful theoretical basis for the next efficient economic deployment of horizontal Wells.The results show that the economic limit water saturation of the horizontal well is 26.35% ~ 67.5% under the current gas price. Among them, horizontal Wells of type I reservoirs have good economic benefits.Well of type II reservoirs can obtain better economic benefits within 52-55% of water saturation, and economic benefits can be obtained by deploying short shaft horizontal Wells within 55 ~ 62% of water saturation. III reservoirs have no economic benefit in deploying horizontal Wells under the current technical conditions.
  查看/发表评论  下载PDF阅读器
关闭
点击这里给我发消息

点击这里给我发消息