Research On The Integral Fracturing For Da Qing Zi Jing Oilifeld In The South Of Songliao Basin

Daqingzijing oil fields belong to the typical low porosity and low permeability,low-abundance complex fault block oil reservoir.It will get the output by fracturing treatment. Asdevelopment continues, the new district reservoir goes deteriorate year by year, the watercut raise in the old field. The wellnet work becomes more complex.The permeability of thenew area is very low, such as1×10-3μm2.30percent of the formation gross is less than2m.This is hard to do the fracturing jobs and as well as get a good result. Through continuousexploration, research and testing, and gradually formed the model for Daqingzijing oilfieldintegral fracturing mode, and the Daqingzijing oilfield become efficient development, andbecome the main oil producing area of Jilin Oilfield.Aiming at the difficulties of fracturing, put the fracturing object to each flooding unit,match the proppant fracture azimuth with the well array, match the fracture length with thewell spacing, match the fracture conductivity with the formation capacity. This is the socalled integral fracturing technology and it fits the Daqingzi oilfield quiet well.To improve the level of application of integral acturing technology, to carry outDaqingzijing oilfield hydraulic fracture azimuth research, fluid leakoff and sandoff controltechnology as well as low damage fracturing fluid system and a new fracturing fluid systemexperimental study as the representative technology. By these technology research and fieldtrials,we improve the integral fracturing design targeted and on-site maneuverability.In thisway, we improve the success ratio as well as the output in the complex block area. It providessolid technical support for oilfield Daqingzijing efficient development.