Research Of Fracturing Parameters Optimization For Glutenite Formation In Che-66 Well Area Of Shenli Oilfield

Che-66 is important block of SLOF(Shengli Oil Field).It's typical glutenite reservoir,generally more than 3 km depth.Belong to low porosity and low permeability reservoir.Complex rock properties,high interlayer heterogeneity,Poor property,permeability is less than 1×10-3?m2,porosity is less than 10%,and low production of glutenite reservoirs,make it need fracturing to enhance production.Compared with the conventional sandstone,glutenite reservoir fracturing usually produces the following problems for the existence of gravel: large difference of rock strength,the plastic makes fracturing proppant embed into soft rock,fracture diverting capacity harm serious.To solve the fracturing friction loss,we mainly used the friction test device,with physical experiment,test friction when fluid flows through the glutenite cracks,to reduce friction of Che-66.Design the wall friction test device and test the friction loss to analysis the impact factors,put forward the method of reducing friction.By testing sensitivity of the natural cores which drill down to Che-66 glutenite reservoirs of SLOF(Shengli Oil Field),achieve the reservoirs' properties,and put forward the corresponding methods of reservoir protection by the tests.Testing fracture flow conductivity in different sanding concentration,avoid proppant embed or compacted fracture surface,at the same time decrease the serious fracturing fluid filtration and distortion crack extension.Using the visual tablet simulate flowback process,developing solutions to reduce damage of flowback,contemporary guarantee the proppant spread effect.Form a complete set of the glutenite of fracturing design.