石化技术
石化技術
석화기술
PETROCHEMICAL INDUSTRY TECHNOLOGY
2015年
1期
104-104,106
,共2页
低渗透%注水%水平井%见水%机械堵水
低滲透%註水%水平井%見水%機械堵水
저삼투%주수%수평정%견수%궤계도수
low permeability%water injection%horizontal well%water%mechanical water plugging
低渗透油田具有低压、低渗、低丰度的特征，需要注水补充能量、多段压裂改造，且采用五点法、七点法、九点法、米字型等多种注水井网探索开发。特低渗透油藏储层孔道微细、渗透率低，油水流动渗流阻力大，岩石孔壁固体颗粒和液体界面之间相互作用明显，油水之间存在的毛管力始终发挥着作用，致使本身较复杂的井下油水关系更加复杂，堵水工艺措施无针对性、实施难度大。封堵水流是减少开发成本和提高采油量便捷的途径之一，一般可以将其分为机械堵水和化学堵水。由于机械堵水具有工艺简单、成本低、见效果快的优势，为此，结合油田储层渗透率低、套管固井完井、多段压裂改造等开发优势，研究设计满足油田水平井特征的机械堵水工艺，为提高水平井开发效果提供了有效技术手段。
低滲透油田具有低壓、低滲、低豐度的特徵，需要註水補充能量、多段壓裂改造，且採用五點法、七點法、九點法、米字型等多種註水井網探索開髮。特低滲透油藏儲層孔道微細、滲透率低，油水流動滲流阻力大，巖石孔壁固體顆粒和液體界麵之間相互作用明顯，油水之間存在的毛管力始終髮揮著作用，緻使本身較複雜的井下油水關繫更加複雜，堵水工藝措施無針對性、實施難度大。封堵水流是減少開髮成本和提高採油量便捷的途徑之一，一般可以將其分為機械堵水和化學堵水。由于機械堵水具有工藝簡單、成本低、見效果快的優勢，為此，結閤油田儲層滲透率低、套管固井完井、多段壓裂改造等開髮優勢，研究設計滿足油田水平井特徵的機械堵水工藝，為提高水平井開髮效果提供瞭有效技術手段。
저삼투유전구유저압、저삼、저봉도적특정，수요주수보충능량、다단압렬개조，차채용오점법、칠점법、구점법、미자형등다충주수정망탐색개발。특저삼투유장저층공도미세、삼투솔저，유수류동삼류조력대，암석공벽고체과립화액체계면지간상호작용명현，유수지간존재적모관력시종발휘착작용，치사본신교복잡적정하유수관계경가복잡，도수공예조시무침대성、실시난도대。봉도수류시감소개발성본화제고채유량편첩적도경지일，일반가이장기분위궤계도수화화학도수。유우궤계도수구유공예간단、성본저、견효과쾌적우세，위차，결합유전저층삼투솔저、투관고정완정、다단압렬개조등개발우세，연구설계만족유전수평정특정적궤계도수공예，위제고수평정개발효과제공료유효기술수단。
The characteristics of low permeability oilfield with low pressure, low permeability, low abundance, water energy, multi interval fracturing, and the use of five point method and sevenpoint method and nine point method, M type and so on many kinds of water wells explorationdevelopment. Ultra low permeability reservoir pore fine and low permeability of oil water flow, high flow resistance, rock wall between the solid and liquid interface interactions are significant, capillary force between oil and water exists always play a role, resulting in more complex downhole oil-waterrelationship itself is more complex, the water shutoff measure has no pertinence, implementation difficulty big. Plugging water is to reduce the cost of development and one of the ways to improve oil production convenient, generally can be divided into mechanical water plugging and chemical water plugging. Because the mechanical water plugging has the advantages of simple process, low cost,fast efficiency advantages, therefore, combined with oil reservoir of low permeability, casing, multi interval fracturing development advantages, research and design to meet the oil characteristics of horizontal wells mechanical water plugging technology, provides an effective technical means to improve the development result of the horizontal well.
