The successful development experience at home and abroad shows that fracturing is an important step to realize shale gas development

and testing selection is the most critical step in the preliminary work of fracturing. The quality of the selection determines the effect of fracturing. Taking Weirong Shale Gas Field platform wells as the research object

according to the characteristics of the basic data of the early evaluation wells and the later development wells

and combined with the principle of testing selection

the later development well selection ideas are deepened. And the development well data is rationally utilized from four aspects

which are the trajectory

geology

engineering and fracture prediction

forming a geological-engineering integration technology of shale gas horizontal well testing selection in"five steps"of trajectory evaluation

geological parameter evaluation

engineering parameter evaluation

fracture prediction

and comprehensive segmentation. The test open flow rate of development wells obtained by this technology is increased by about 1～2 times compared with the previous evaluation wells

saving 40 % of the project time. Field tests show that this technology has certain guiding significance for improving the beneficial development of deep shale gas.