首页> 外文OA文献 >Productions of volatile oil and gas-condensate from liquid rich shales
【2h】

Productions of volatile oil and gas-condensate from liquid rich shales

机译:富含液体氟土的挥发性油和气凝块的制作

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The growth in productions of liquid hydrocarbons from tight formations (shales) has been phenomenal in recent years. During the production of liquids (oil and condensate), large amounts of associated gas are also produced. The economic viability of a producing well depends on maintaining a reasonable proportion of liquid. The compositions and state of reservoir fluid play an important role in producing liquids from tight formations or shales in the USA such as Eagle Ford in Texas, Niobrara in Wyoming-Colorado, and Bakken in North Dakota. Small deviation in reservoir temperature around the critical point changes the state of the fluid (volatile oil or condensate) and as a result, the production of liquid is affected. Impacts of the state of the fluid (volatile oil or condensate), reservoir permeability and operating conditions on ultimate recoveries and produced gas liquid ratio are studied here. Five different reservoir fluids representing low to high liquid hydrocarbon contents are considered. Around 2% increment in condensate recovery after 10 years of production is observed from 100 nD permeability reservoir filled with the richest fluid (fluid 5) when the well is operated at 3000 psia compared to 1000 psia. At the same conditions, 9.3% more condensate is recovered for the leanest fluid (fluid 1). Therefore, operating the well at higher flowing bottom hole pressure (BHP) maximized the liquid recoveries of volatile oils and condensates in case of low permeability reservoirs (100 nD). However, in case of higher permeability (1000 nD) reservoir, lower operating pressure was preferable to increase the recovery. Conclusively, bottom hole pressure has less impact on the richer fluids and higher permeability reservoir. Operating well at higher BHP (3000 psia) also suppresses the production of gas and relatively enhances the production of liquid. Liquid to gas ratio (LGR) declines more rapidly for 100 nD permeability reservoirs compared to 1000 nD at BHP of 1000 psia. High fracture permeability (1000mD and above) appeared to negatively affect liquid recoveries at higher BHP resulting in reduction of recovery by around 2%. An optimum fracture permeability may be necessary based on reservoir permeability, operating pressure and type of fluid.
机译:近年来,液体碳氢化合物的产量(Shales)的成长已经存在。在生产液体(油和冷凝物)期间,还生产大量的相关气体。生产良好的经济可行性取决于保持合理比例的液体。储层流体的组合物和状态在生产来自德克萨斯州德克萨斯州德克萨斯州德克萨斯州德克萨斯州的巨型组织或Shaldes的液体中发挥着重要作用,在北达科他州的北达科拉省的牛皮罗纳,以及Bakken。储层温度围绕临界点的小偏差改变了流体(挥发油或冷凝物)的状态,结果,液体的产生受到影响。这里研究了流体状态(挥发性油或冷凝物),储层渗透性和操作条件对最终回收和产生的气体比的影响。考虑了五种不同的储层液,其代表低至高液态烃含量。从100个渗透储层观察到10年后,在填充最富有的液体(流体5)时,在填充最富有的液体(流体5),井在3000psia的井中运行,约2%的增量约为2%。在相同的条件下,为最精简的液体(流体1)回收9.3%的冷凝物。因此,在较高流动的底部孔压力(BHP)下操作井,最大化挥发性油的液体回收率,并且在低渗透储存器(100nd)的情况下。然而,在较高的渗透率(1000nd)贮存器的情况下,较低的操作压力优选增加回收率。最后,底部孔压力较小对更丰富的液体和更高渗透性储层的影响较小。在较高的BHP(3000psia)上运行良好也抑制了气体的生产,相对增强了液体的产生。液体与液体比(LGR)在1000psia的BHP的1000nd相比,100 nd渗透储存器更快地下降。高骨折渗透率(1000MD及以上)出现对较高的BHP的液体回收率产生负面影响,导致恢复减少约2%。基于储层渗透性,操作压力和流体类型,可能需要最佳的断裂渗透性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号