In Jimsar，the method of dense cutting+large section and multi-cluster is applied to most of the horizontal shale oil wells that have been subjected to volume fracturing for stimulation. In order to further improve the stimulation effectivity，the method of temporary plugging is used in field to promote even fracture initiation. To evaluate the effectivity of temporary plugging，this paper interprets the reservoir and engineering parameters before and after temporary plugging based on pump-off pressure drop data using fracturing software. According to the comparison and verification made by well testing software，the interpretation results are similar，and the conclusions are reliable and effective. This method is simple，easy to operate，and cost-effective，and provides powerful guidance for field test of temporary plugging. The study results show that after temporary plugging，the closure time of fractures is prolonged，the efficiency of fracturing fluid is improved，and the treatment zone permeability is reduced，which prove that the temporary plugging agent is effective in satisfactorily plugging areas with good physical properties.

The development of deformed structures in shale oil reservoirs will change the physical characteristics of local rocks， resulting in flow barrier and inhibiting fluid flowing capacity， which further reduces the fracturing effect. The upper and lower sweet spots of Permian Lucaogou Formation are developed in Jimsar Sag of Junggar Basin， and contemporaneous deformation structures are widely developed in shale reservoirs. Traditional study methods are mainly based on the surface observation and the description of cores， but study on the extension mode of deformation structures in the strata and the information on adjacent strata is insufficient. In this study， a 134-meter whole shale core from a well section of Lucaogou Formation in Jimsar Sag was scanned using whole core CT to obtain its three-dimensional CT images， which were then observed for the development of deformation structure in the core， genetic type and distribution pattern. This method facilitates the identification and evaluation of geological and engineering sweet spots in shale reservoirs in the study area.

Horizontal well fracturing is a key technolohy for the commercial exploitation of shale oil reservoirs， and the productivity after fracturing has always been the study focus of many scholars. A traditional shale oil productivity model ignores the influence of bedding fractures formed during fracturing on productivity. In response to this problem， the related theory of embedded discrete fracture model is introduced to establish a three-dimensional horizontal well productivity model for shale oil reservoirs with bedding fractures considered. The model is discretized based on finite-difference， and the pressure distribution and typical productivity curves in reservoir matrix and fractures are obtained by MATLAB programming. The influence of permeability and fracture density on shale oil productivity is analyzed. Studies show that productivity increases with the increase in the permeabilities of bedding fractures， and with the increase in the density of bedding fractures. When the permeability of bedding fractures is relatively high and developed， great error will be resulted in if no bedding fractures are included in the productivity model. The model in this paper is of important practical significance for accurately predicting the productivity of shale oil reservoirs after fracturing.