江苏复杂断块油藏单层/少层开发经济界限研究

Economic limit study for the development of complex faulted reservoirs with single layer or only a few layers in Jiangsu Oilfield

细分层是提高油藏原油采收率的重要手段之一,层系细分以后,最终会得到由单层或者少数几个小层组合为一套开发层系的层系组合方式。因此,有必要确定单层或者少数几个小层组合为一套开发层系以后在经济上的界限。本次研究针对江苏复杂断块油藏,在典型油藏参数条件下,利用动态经济评价方法对常规井和水平井的单层/少层开发的经济界限(即单井控制剩余可采储量、单井初期日产油量等)进行了计算并绘制相应图版。对于具体油藏,可根据其油藏参数及当前经济条件,方便直观地确定其单层/少层开发的经济可行性。

Subdivision development is one kind of important methods improving reservoir oil recovery. After strata were subdivided,it will form a set of layer series of development which consist of only one layer or only a few layers. Therefore, it is necessary to study the economic limit for the layer series of development. For the development of complex faulted reservoirs with single layer or only a few layers in Jiangsu Oilfield, it was calculated by dynamic economic evaluation method the economic limits for vertical well or horizontal well development with typical reservoir conditions are calculated, including single well controlled remaining recoverable reserves, daily oil production at early stage. The results are demonstrated with series of charts. Therefore ,for specific reservoir, the economic feasibility can be determined by the charts with the specific reservoir parameters and current economic conditions.