Study On Fracture Characteristics And Propagation Law Of Mahu Coring Well

Field coring test has become an important means to intuitively understand the spatial extension and distribution of hydraulic fractures.In order to understand the spatial distribution and propagation law of medium-pressure fracture network in conglomerate reservoir and evaluate the adaptability of horizontal well volume fracturing technology in conglomerate reservoir,the fracture characteristics and propagation law of coring well in Ma 001 demonstration area were studied.This paper mainly from the Permian basin in the North America coring well related research method,is established Ma Hu lake dense proppant of conglomerate reservoir identification methods,open cylinder through core description and fracture observation,establish artificial fracture identification methods and evaluation standards and mechanical mechanism of the formation of artificial joint group is proposed,and the conglomerate reservoir horizontal well artificial fracture is simulated.Through the identification and analysis of proppant in drilling cuttings and mud,it is found that the content of 40/70 mesh proppant is significantly higher than that of20/40 mesh proppant.The 20/40 mesh proppant can migrate horizontally to about 10 m in the hydraulic fracture,and the 40/70 mesh proppant can migrate horizontally to about23 m in the hydraulic fracture.By using the established artificial fracture identification method,a total of 352 core fractures were obtained in QX01 well,including 214 hydraulic fractures,accounting for 60.8%.90 drilling induced fractures,accounting for25.6%;There are 48 induced fractures in core cutting,accounting for 13.6%.It is clear that the main controlling factor affecting fracture density is geological factor.Finally,the numerical simulation of artificial fracture propagation of horizontal Wells in conglomerate reservoir is carried out,and the fracture propagation model is verified by multiple aspects.The fracture propagation law and engineering parameters are optimized by using the fracture propagation model under different engineering parameters.