汾川-康台区块阳225井组整体压裂参数优化研究  

Study on parameter optimization of overall fracturing scheme for Yang225 well group in Fenchuan-Kangtai Block

作　　者：杨文博 李宇 申鹏翔 白凯华 王建平 YANG Wenbo;LI Yu;SHEN Pengxiang;BAI Kaihua;WANG Jianping(Technology Institute,Exploration and Development Technology Research Center of Yanchang Oilfield Co.,Ltd.,Shaanxi Yan’an 716001,China)

机构地区：[1]延长油田有限责任公司勘探开发技术研究中心工艺技术研究所,延安716001

出　　处：《非常规油气》2025年第1期141-150,共10页Unconventional Oil & Gas

摘　　要：为了搞清汾川-康台区块阳225井组整体压裂合理参数,针对工区储层改造不足及改造过度等状况,采用区块整体压裂技术,建立阳225井组油藏三维地质模型及油藏数值模型,通过模拟不同缝长、导流能力和方位的裂缝,在生产开发过程中对整体产量和扫油效率的影响,找出最佳的裂缝参数优化结果,进一步完成压裂施工参数优化及整体压裂施工方案设计。研究结果表明:1)汾川-康台区块长6层常规井压裂普遍形成水平缝,通过优选压裂段进行错缝压裂,提升各相邻裂缝距离3.9%~27.8%,降低了油井压窜风险;2)阳225井组整体压裂产量是常规压裂效果的1.956~2.850倍,有效提升了油藏开发效果;3)相比于临近井组,阳225井组整体压裂施工成本高40.14万元,但是投资回收期短了493天,优势更为明显。The block overall fracturing technology was adopted in Fenchuan-Kangtai block to address the insufficient and excessive reservoir stimulation.A three-dimensional geological model and reservoir numerical model of Yang225 well group reservoir in the work area were established to clarify the reasonable parameters for the overall fracturing.The impact of fractures with different lengths,flow conductivity,and orientations on the overall production during the development was simulated,and the optimal fracture parameter optimization results were obtained.On this basis,the optimization of fracturing construction parameters and the design of the overall fracturing construction plan were completed.The research results showed that:1)Horizontal fractures are generally formed in the conventional well fracturing in Chang6 layer in Fenchuan-Kangtai block.The optimal fracturing intervals are selected for staggered fracturing,the distance between adjacent fractures is increased by 3.9%~27.8%,and the risk of wellbore pressure channeling is reduced.2)The overall fracturing production of the Yang225 well group is 1.956~2.850 times that of conventional fracturing,effectively improving the development effects of the reservoirs.3)Compared to the adjacent well group,The overall fracturing construction cost of Yang225 well group is 401400 yuan higher,but the investment payback period is 493 days shorter,indicating a more obvious advantage.

关 键 词：汾川-康台区块 整体压裂方案 油藏数值模拟 裂缝参数优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]