YP2区块水平井网井间示踪剂产出影响因素分析及解释模型  

Analysis of Influencing Factors of Interwell Tracer Production and Establishment of Interpretation Model

作　　者：李育 马焕焕 张永飞[1] 张金元 杨文博[1] 李卫东[1] 韩龙飞 吕栋 Li Yu;Ma Huanhuan;Zhang Yongfei;Zhang Jinyuan;Yang Wenbo;Li Weidong;Han Longfei;Lyu Dong(Echnology Research Institute of Exploration and Development Technology Research Center of Yanchang Oilfield China,Yan'an 710077,China)

机构地区：[1]延长油田股份有限公司勘探开发技术研究中心工艺技术研究所,陕西延安716001

出　　处：《云南化工》2023年第10期132-137,共6页Yunnan Chemical Technology

摘　　要：针对水平井网井间示踪剂产出影响因素不明确以及井间窜流情况难以明确表征等难题,以延长油田YP2区块区块为例,采用数值模拟手段,分析了窜流通道突进系数、窜流通道厚度等10个因素对产出示踪剂的影响,结果表明,储层压力与示踪剂注入初始浓度对示踪剂产出浓度曲线的形态完全不影响,窜流通道突进系数、窜流通道厚度、储层渗透率、储层孔隙度、后期注水速度,以及窜流通道长度等参数影响较大。基于分析结果,采用B-P神经网络算法建立了井间示踪剂的解释模型,验证了该模型具有较高的预测精度。It is difficult to characterize the cross well crossflow in horizontal well pattern due to the unclear factors affecting the cross well tracer production.Taking a tight oil block in Yanchang Oilfield as an example,this paper analyzes the influence of 9 factors,such as breakthrough coefficient and thickness of channeling channel,on the production of tracer by numerical simulation.The results show that reservoir pressure and initial concentration of tracer injection have no influence on the shape of tracer production concentration curve.The breakthrough coefficient of channeling channel,thickness of channeling channel,reservoir permeability,reservoir porosity.In the later stage,the parameters such as water injection rate and channeling channel length have great influence;Based on the analysis results,the B-P neural network algorithm is used to establish the inter well tracer interpretation model,which is verified to have high prediction accuracy.The establishment of the interpretation model provides a basis for quantitative identification of the direction of channeling channel and the amount of plugging agent,and also guarantees the improvement of water injection development in the later water direct combined well pattern of Yanchang Oilfield.

关 键 词：井间示踪剂 产出影响因素 窜流通道 解释模型 

分 类 号：TE135[石油与天然气工程—油气勘探]