石油化工高等学校学报

石油化工高等学校学报 ›› 2014, Vol. 27 ›› Issue (4): 52-56.DOI: 10.3969/j.issn.1006-396X.2014.04.012

• 石油工程 • 上一篇    下一篇

浅层断块油藏水平井CO2 吞吐增油技术

刘怀珠李良川吴 均   

  1. ( 中国石油冀东油田公司钻采工艺研究院, 河北唐山0 6 3 0 0 4)
  • 收稿日期:2013-11-29 修回日期:2014-06-15 出版日期:2014-08-25 发布日期:2014-11-10
  • 作者简介:刘怀珠( 1 9 8 3 - ) , 男, 硕士, 工程师, 从事采收率技术研究与现场推广应用; E - m a i l : l i u h u a i z h u 0 0 7@1 2 6. c o m。
  • 基金资助:
    中国石油天然气集团公司重大专项“ 水平井控水技术研究与现场应用” ( 2 0 0 8 F - 1 5 0 6) 。

CO2 Huff and Puff Technology on Horizontal Well of Shallow FaultBlock Reservoir

  1. (Jidong Oilfield Drilling & Production Technology Research Institute, China National  Petroleum Corporation, Tangshan Hebei 063004, China)
  • Received:2013-11-29 Revised:2014-06-15 Published:2014-08-25 Online:2014-11-10

摘要: 水平井是高尚堡浅层断块油藏的主要开采方式, 在水平井开发过程中易形成边底水突进、 水窜、 水淹, 油井含水上升速度快, 导致油井产能下降, 严重影响油田的开发效果。针对水平井开发后期产能下降的问题, 采用了CO2 吞吐增油技术。其主要技术原理为: 在地层温度条件下CO2 能快速溶于原油中, 使原油膨胀, 改变原油的物性, 大幅度降低原油黏度, 降低油水界面张力, 增加溶解气驱的能量, 进而达到油井增产的目的。3 4井次的现场应用结果证实, 水平井单井日产油量由1. 7 2t增加到4. 8 8t , 含水率由9 5. 0 0%下降到5 1. 4 5%, 控水增油效果显著。

关键词: 水平井开发,    ,  , 浅层断块油藏,    ,  , CO2 吞吐技术,    ,  , 增油机理

Abstract: Horizontal well is the main development way of Gaoshangpu shallow faultblock reservoir. During the process of horizontal well development edge water and bottom water usually channel, finger, flood so that the water cut goes up quickly. After water cut is high, it caused well productivity decreasing, seriously affects the development effects of oil field. To solve this problem, the CO2 huff and puff technology was chose. The main principle was as follows. Under the condition of temperature and pressure, oil can dissolve CO2 quickly. CO2  can expand oil,change the physical property, decrease oil viscosity and interfacial tension between water and oil, increase dissolved gas drive energy then improve oil/gas recovery factor. Field application of 34 wells show that daily oil production increases from 1.72 t to 4.88 t and water cut decreases from 97.5% to 5145%. The technology has obvious stimulation effect.

Key words: Horizontal well development,     ,  Shallow faultblock reservoir,     ,  CO2 huff and puff technology,    ,  Stimulation mechanism

引用本文

刘怀珠, 李良川, 吴 均. 浅层断块油藏水平井CO2 吞吐增油技术[J]. 石油化工高等学校学报, 2014, 27(4): 52-56.

Liu Huaizhu, Li Liangchuan, Wu Jun. CO2 Huff and Puff Technology on Horizontal Well of Shallow FaultBlock Reservoir[J]. Journal of Petrochemical Universities, 2014, 27(4): 52-56.

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