四川油气田天然气开发技术新进展

NEW ADVANCEMENT ON DEVELOPMENT TECHNIQUES IN SICHUAN GAS FIELDS

2000年以来,四川油气田天然气业务呈快速发展态势,天然气产量年均增长率超过了10%。面对高含硫气田开发延后、上三叠统须家河组气藏规模有效开发技术难度大和老气田递减明显加快等困难,在须家河组气藏规模有效开发等"三大攻坚战"和老气田挖潜这四大开发领域内,大力开展技术集成和创新,获得了精细气藏描述等九项独具特色的技术新进展,推动了天然气业务的快发展。特别是2007年在高含硫气田22×108m3产量未能兑现的条件下,依靠技术创新和老气田挖潜,仍然实现了年产气144.71×108m3的目标,较2006年净增11.56×108m3,增幅达到8.7%。

Since 2000,natural gas trading is growing rapidly in PetroChina Southwest Oil & Gasfield Company,and the annual gas production increase ratio has been up to more than 10%.Actually the company has to face up with many difficulties like high-sulfur gas fields to be postponed for some reason,great technical intractability encountered in the large-scale development of Upper Triassic Xujiahe Formation gas reservoirs,and the depletion of old gas fields obviously on the increase,but on the other hand,during their painstaking exploration works on those four areas including large gas fields,high-sulfur gas fields,Xujiahe formation gas reservoirs,and the previous old gas fields,all kinds of techniques have been integrated and innovated into nine matured and characteristic items of technology,such as the technology on fine gas reservoir description,which help the company to achieve in great success in natural gas trading.Especially in 2007,failing to obtain the previously predicted 2.2 bcm of gas production from the high-sulfur gas field,the company succeeded in producing 14.471 bcm this year,1.043 bcm more than that in 2006,with an increase ratio of 7.77%.