| In view of the strategical importance of the philosophy's theoretical thoughts the thesis probes into the combination of philosophy's theoretical thoughts and the actual economic activity under the guidance of economic philosophy's thoughts, with the kernel of the best economic benefit and with the purpose of the seeking the highest profit. And then the thesis selects the financial evaluation, national economic evaluation, and indefinite analysis and finally accepts the best one in comparation of several plans. Particularly the nine sustainable development and adjustment plans of Xinchang gas field are evaluated detailedly. Synthesizing the indexes of technology and economy, the thesis selects the fifth, sixth and seventh plans as feasible plans and then evaluates these three plans deeply and detailedly. Finally the author selects the fifth plan as the best one, while the seventh plan as the second by making a penetrating analysis of them.In the course of oil & gas evaluation, the thought of economic philosophy is the soul. Mainly from the point of view of the philosophy, the thesis explains four dialectical and united relations, which are put into practice, such as the subject and object of economic activity, technology and economy, fairness and benefit and technological creation and innovation, according to the importance of the oil & gas resources and the characteristics of the exploration and development. It builds the cognitive concept of organic unity, the ethic concept of ecological moral, the thought mode of mutual benefit, the concept of the new technological development and the research thought of planning the present with the future following the principals of comparation, economic benefit, and technological creation and innovation. At last the thesis has evaluated the nine plans of sustainable production, development and adjustment of Xinchang field by use of more scientific theoretical thoughts from technology and economy.The technological and economic evaluation of sustainable production and adjustment plansof the Xinchang field will benefit the creation and innovation and development of the thoughts and theory of economic philosophy, the higher benefit of sustainable production and more scientific strategical decision of Xinchang gas field and the development of the west with the transforming the advantage of resources into that of the economy. Environmental polluted will be reduced and technology, economy, society and natural resources will be sustainable developed. |