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《Natural Gas Industry》 2010-01
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Efficient development of complex gas reservoirs by matched technologies

Shi Xingchun,Li Guangyue,Zhou Yuezhong(Sinopec Co.,Ltd.,Beijing 100728,China)  
The Sinopec possesses its registered gas and/or oil exploration zones,where the prospective natural gas resources accounts for 20% of the total in China.From the explored reserve types and the developed gas fields,the Sinopec is facing a big challenge in developing complex gas reservoirs.In view of this,the Sinopec has tackled technical problems and learned good lessons from field experiences in the last decades.Those achievements have helped the Sinopec to promote the development of high-sulfur,low-permeability and volcanic gas reservoirs.Aiming at the difficulties and peculiarities of developing those complex gas reservoirs,we present some proposals as follows:a.Sedimentary facies,reservoir forecast,and gas-bearing capacity prediction should be strengthened in order to plan the wells around the gas-accumulated zones or reservoirs,which is the key to improve the success ratio of drilling;b.More efforts should be made in the studies of gas reservoir types,gas well performance and the gas-water relationship to optimize both the development scheme and well pattern designing,which is the guarantee of improving significantly the output per well;c.technical research should be made in well types,drilling tools,drilling fluids,well structures,well completion modes,and measures of enhancing gas recovery;d.operation procedures should be managed and optimized to improve the ROP and shorten the well construction period,which is an effective means to reduce the investment and improve the exploitation profit.
【CateGory Index】: F426.22
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