长江大学学报（自然科学版）2025，Vol.22Issue(2)：61-67,7.
大庆长垣油田砂岩油藏水平井挖潜优化设计方法及应用研究
Research on optimization design method and application of horizontal wells in sandstone reservoir of Daqing Placanticline Oilfield
摘要
Abstract
The distribution of remaining oil in multi-layer sandstone reservoirs in Daqing Placanticline Oilfield is scattered and small-scale,mainly distributed at the edge of the faults,the rapid sedimentary face transition areas,the perforating avoidance areas and the top of the thick layers.When horizontal wells are used for accurate potential tapping,the characteristics of remaining oil,reservoir and drilling technology need to be considered,and the optimization design is difficult.Through the establishment of a conceptual model reflecting the distribution of remaining oil,reservoir physical properties and drilling process characteristics,combined with the previous horizontal well potential tapping practice in Daqing Placanticline Oilfield,the horizontal section length,vertical position,azimuth and short radius sidetracking horizontal well completion method optimization method was studied.The optimal length and vertical position of the horizontal section are comprehensively determined from the aspects of recovery rate and single well production.The plane orientation of the horizontal section should be matched with the sedimentary type,sand body distribution characteristics and structural characteristics of the target layer to achieve better potential tapping effect.The conceptual numerical model of sidetracking horizontal well with short radius was established.Combined with the economic evaluation method,the reasonable completion method of sidetracking horizontal well was given.When the oil content of sidetracking target layer is high,the cement cementing method should be adopted in the build-up section to avoid the influence of interlayer interference on the potential tapping effect of sidetracking horizontal well.The research results can provide reference for the potential tapping of high water cut old oilfield.关键词
特高含水期/剩余油富集区/水平井/优化设计Key words
ultra-high water cut period/residual oil enriched areas/horizontal well/optimization for design分类
石油、天然气工程引用本文复制引用
杨清立,吴家文,左松林,李丹丹..大庆长垣油田砂岩油藏水平井挖潜优化设计方法及应用研究[J].长江大学学报（自然科学版）,2025,22(2):61-67,7.基金项目
中国石油天然气集团有限公司攻关性应用性科技专项"特高含水后期水驱持续高效开发技术研究与试验"(2023ZZ22YJ02). （2023ZZ22YJ02）
