工程预算工作的开展,实则在造价经济原则的指导下,对人力和物力耗费的一种估算。针对存在多个方案选择的前提下,给出投资决策。可见,油田项目投资决策仍然须在造价经济的基础上来展开。应在造价经济基础上,尝试应用决策树法,来展开对油田项目不确定性风险下的投资决策。在实施具体的投资决策时,须对项目各途径投资期望值展开估算、对决策树各分支进行合理的处理。 Project budget work carried out, but in fact, under the guidance of the principle of cost economy, an estimate of the human and material costs. For the existence of a number of options under the premise of given investment decisions. Visible, oilfield investment decisions must still be based on the cost of economic development. Based on the cost economy, try to apply the decision tree method to start the investment decision under the risk of uncertainty of oilfield project. In the implementation of specific investment decisions, the investment expectations of the project must be estimated, the branches of the decision tree reasonable treatment.