中文摘要：

本文运用DEA-Malmquist指数方法,测算了2008~2014年间31家中国石油企业全要素生产率,分析其时序演变及差异情况,并分别考察了全部石油企业、国有石油企业、民营石油企业全要素生产率的收敛性。结果表明：12008~2014年,石油企业全要素生产率年平均下降3.3%,其中技术进步平均下降5.1%,成为石油企业全要素生产率增长的主要制约因素。2全部、国有及民营石油企业全要素生产率趋势变化基本一致,均呈现＂M＂型,民营石油企业全要素生产率年均下降速度高于国有石油企业6%,高于平均水平3.3%,主要原因是民营石油企业技术进步下降幅度大,高于国有石油企业9.6%。3通过σ收敛检验发现,全部、国有及民营石油企业间全要素生产率呈现发散——收敛——稳定的态势,又通过条件β收敛检验印证石油企业间全要素生产率正不断趋近各自的稳态,意味着石油企业的稳态增长水平不同,企业间全要素生产率的差距会持久存在。

英文摘要：

This article uses DEA- Malmquist index method,calculation of total factor productivity of Chinese petroleum enterprises in 2008 to 2014,analyzes the characteristics and differences of total factor productivity of oil enterprises,then tests all,state- owned and private oil enterprises＇ convergence of total factor productivity separately. The results show： 12008- 2014,the total factor productivity of the oil enterprises decreased by 3. 7%. Among them,the average technical progress fell by 5. 1%,as the main restricting factors of the total factor productivity growth in oil enterprises. 2The decline rate of total factor productivity of private oil enterprises is higher than state- owned oil companies by 6%,and above average 3. 3%,and mainly private oil enterprise technological progress of the decline is larger,higher than the state- owned oil companies by 9. 6%. 3The σ convergence test display that total factor productivity of all,state- owned and private oil companies has a remarkable convergence,then becomes stable. And conditional β convergence test confirmed among petroleum enterprises total factor productivity is constantly approaching their steady state,which means steady growth level of the enterprise is not the same,the gap of the total factor productivity between enterprises will endure.