摘要：A flow mathematical model with multiple horizontal wells considering interference between wells and fractures was established by taking the variable width conductivity fractures as basic flow *** a semi-analytical approach was proposed to model the production performance of full-life cycle in well pad and to investigate the effect of fracture length,flow capacity,well spacing and fracture spacing on estimated ultimate recovery(EUR).Finally,an integrated workflow is developed to optimize drilling and completion parameters of the horizontal wells by incorporating the productivity prediction and economic *** is defined as nested optimization which consists of outer-optimization shell(i.e.,economic profit as outer constraint)and inner-optimization shell(i.e.,fracturing scale as inner constraint).The results show that,when the constraint conditions aren’t considered,the performance of the well pad can be improved by increasing contact area between fracture and formation,reducing interference between fractures/wells,balancing inflow and outflow between fracture and formation,but there is no best compromise between drilling and completion *** only the inner constraint condition is considered,there only exists the optimal fracture conductivity and fracture *** considering both inner and outer constraints,the optimization decisions including fracture conductivity and fracture length,well spacing,fracture spacing are achieved and *** the fracturing scale is small,small well spacing,wide fracture spacing and short fracture should be *** the fracturing scale is large,big well spacing,small fracture spacing and long fracture should be used.

摘要：为明确四川盆地南缘昭通示范区下志留统龙马溪组富有机质页岩储层微观孔隙结构特征及吸附能力,设计低温氮气吸附实验和高温甲烷吸附实验,获得富有机质页岩的孔隙结构参数,使用修正过的Langmuir-Freundlich模型对等温吸附线进行拟合,以评价页岩样品的甲烷吸附能力,并探讨微观孔隙结构对页岩吸附性能的影响。实验结果表明:研究区富有机质页岩纳米级孔隙主体为墨水瓶状和狭缝型,比表面积为9.429~27.742 m^2/g,孔体积为0.011~0.02 cm^3/g,平均孔径为8.546~10.982 nm,分形维数为2.552 2~2.725 5。使用Langmuir-Freundlich模型拟合高温甲烷吸附曲线,30℃甲烷吸附的Langmuir体积为1.397 32~4.076 61 m^3/t,不同页岩样品吸附能力差异明显。富有机质页岩中,随着有机质含量的增大,一方面有机质孔数量增多,页岩比表面积增大,甲烷吸附位点增多,页岩吸附能力增强;另一方面分形维数增大,孔隙表面非均质性增强,孔径减小,孔隙壁之间的吸附势能增强,页岩吸附能力增强。富有机质页岩中粘土矿物对吸附性能的贡献较小。

摘要：研究堆燃料元件在安全转移至乏燃料贮存水池前,需对其进行破损检测。目前的检测方法耗时长,难以对具体的破损对象快速判定。本文提出一种破损乏燃料元件快速排查法,该方法能在短期内实现对破损乏燃料筛查,提高后续待运乏燃料破损检测通过率。

摘要：为解决不能脱水的微破损已辐照浅燃耗燃料组件离线检漏的问题,进行了燃料组件检漏技术方案、抽气技术和检查工艺研究。利用低温吸附和抽气载带的方法,解决水中放射性气体的检测问题。基于以上研究成果研制了检漏装置,并进行试验验证。该检漏装置对^(137)Cs检出限为0.5Bq/L,对^(85)Kr的检出限为19 Bq/L。