Study on the Process and Technologies of Oil-layer Cracking in Deep CHANG-10 in ZHIDAN Oil Region

Fracturing technology is the low permeability reservoir testing oil,an important part of supporting technology,but also improve the well production and increase recoverable reserves of the principal means.However,the deep resevoir YanChang formation of Triassic in Ordos basin Chang10 layer is a typical low porosity,low permeability,low pressure,low abundance of lithologic reservoirs.By the depositional environment,lithology and structure and other factors,the deep reservoir development difficulties,fracturing technology has been no breakthrough.Article on the basis of previous studies,based on Chang10 oil layer geological characteristics,filtered a set of adaptation Pill fracturing fluid system of 10 reservoirs,the use of negative pressure perforating,variable displacement,optimization sand procedures,precision and fracture force additional breaker closed and many other core technologies and applications in the field to obtain good results.Through the transformation and capacity of reservoir analysis of the situation,indicating that the set of process technology to meet the head of Zhidan oil reservoir reconstruction requirements of 10,showing good application and popularization.