Oilfield Drilling Cost Economic Limit The Construction Of A Productivity Research

Drilling cost accounting for a large proportion in oilfield exploration and development, In China drilling cost accounts for about40%of oil industry investment, in foreign drilling cost accounts for about50%～80%exploration costs, the cost of oilfield development30%(sea) to80%(land). Apparently, construction of production capacity of drilling project involves a large number of manpower, material resources, financial resources; cost of drilling engineering should be attached. How to find the oil field productivity construction drilling engineering economic limit of investment in order to achieve the balance between benefits and risks as well as to maximize the overall efficiency is an urgent need to address the problem of oilfield enterprises.This article on oilfield productivity construction stage in the process of drilling the drilling cost and economic limits as the object of study, begin with a brief overview of oilfield productivity construction process as well as the cost of drilling engineering theory, and then the analysis of oilfield productivity construction drilling cost limits based on the factors that influence the use of technology, principles of economics, in the setting of a number of assignment parameters under the condition of new capacity, established under the construction of production capacity of million tons, the construction of a productivity of one million tons of different investment and fixed investment, under these three conditions of drilling cost economic limit model, which also on fixed investment of million tons of productivity construction of further analysis on the stage of drilling cost economic limit problem. Then according to the actual construction of oilfield productivity of these three kinds of economic limit evaluation of parameters of the mathematical model of assignment, which in a certain depth, the daily output per well, trap area, well spacing density and productivity of unit investment numerical range of oilfield productivity construction drilling cost economic threshold value.According to the three model calculation results to observe the comparison, discover the drilling cost and economic circles limits single well daily output, well depth, traps area and unit capacity is highly related investment relations, and obtained:in the new capacity one million tons of production capacity and fixed investment circumstances, the dependent variable economic limit the drilling cost and well depth, traps area and single well daily output three independent variables of the mutual influence between relations; One million tons of production capacity in different investment under the drilling cost economic boundaries and dependent variable well depth, unit capacity investment and single well daily output three independent variables of the relationship between influence each other. This series model for oilfield productivity construction process of superior leadership to subordinate of oil field drilling cost investment funding decision-making provide a basis, also can help every oilfield scientific and reasonable planning and the use of superior to provide drilling investment money, for oilfield productivity construction drilling engineering practice has certain guiding significance.