The Sulige Gas Fields Low Permeability Reservoir Stimulation Technology

Sulige gas field is a very large gas field in China’s onshore discovery.The main producing formation of the Lower Permian Shanxi Formation Hill to two Permian the Lower Shihezi group box 8 segment,about depth of about 3 200～3 500m sandstone and mudstone strata is a low permeability,low pressure,low abundance degree of lithologic gas reservoirs.Sulige gas field most of the wells need to be taken after fracturing stimulation can be put into operation,but using conventional sand fracturing easily lead to a fracturing fluid flowback difficulties,the fracturing of formation damage,does not conform to Suri lattice gas field of low-cost development requirements.Therefore it is necessary to study the low damage for the Sulige low pressure gas reservoir,low-cost fracturing technology.According to Su block reservoir characteristics and development status,and actively carry out reservoir stimulation technology,developed and perfected the reservoir stimulation technology suitable for the block,developed and perfected points suitable for the block layer fracturing process.Characteristics and transformation of difficulty for the block at the same time,to carry out field trials,achieve better results and to further promote the implementation perfect Susie block the development of technical means.Cost-effective development of the block,and provide strong technical support.