带油环边水气藏水平井开发优化设计

Optimization design of horizontal well development for edge water gas reservoir with oil ring

马时刚 李清瑶

1.中海石油(中国)有限公司开发生产部，北京 100010;2.中国石油大学(北京)地球科学学院，北京 102249

1.Exploitation and Production Department， CNOOC Ltd.， Beijing 100010， China; 2.College of Geosciences， China University

of Petroleum， Beijing 102249， China

锦州×油气田为一个带油环的层状边水凝析气藏，气区部署的气井肩负联合对外供气任务。在开发中，为了减缓气油界面上升，防止油环锥进入气区干扰气井稳定生产，同时避免油环锥进入气区成为死油而无法采出，降低油环的开发效果，因而在油环区部署水平井，与气井同步生产，保持气油界面的稳定性。文中通过数值模拟手段，对水平段纵向位置、水平段长度、合理采油速度等参数进行研究和优化设计。实际生产动态表明，优化设计的水平井能延缓边底水锥进和保持气油界面的稳定，提高了油气田的整体开发效果。

Some oilfield in Jinzhou is a layered edge water gas condensate reservoir with oil ring. The gas wells deployed in the area were laid heavy task of external gas supply. In order to slow down gas-oil contact rising to prevent oil ring coning into the gas zone tointerference gas well production during the process of oilfield development， at the same time， in order to avoid the oil ring coning intothe gas zone and becoming dead oil which cannot be produced and to reduce the development effect of oil ring， the horizontal well is deployed in oil zone to remain the gas-oil contact stable. This paper studies and optimizes the design of the vertical position ofhorizontal section， horizontal well length， reasonable oil recovery rate and other parameters by means of numerical simulation. The actual production shows that the optimized and designed horizontal wells can delay the oil ring and edge-bottom water coning and remain the gas-oil contact stable， which improves t he overall development effect of oil and gas field.

10.6056/dkyqt201404017