摘要
为了搞清井网密度与砂体控制程度关系，满足三次加密和三次采油的需求，从沉积学原理出发，通过对大庆油田萨中开发区北一区断东西块萨葡油层综合分析解剖，绘制不同井网密度条件下的砂体剖面图和沉积相带图，剖析了不同井网密度下各类砂体展布特征，探讨了不同井网密度对油层连通状况的影响，揭示了二者密切相关，研制了沉积相带线网格化的方法，实现了分不同井网密度计算砂体控制程度，定量给出各类砂体井网密度与控制程度的关系。研究结果表明：井网越密对砂体认识的控制程度越高，当井网密度高达115口／km^2时，仍有10％左右的砂体难以控制。
In order to make sure of the relation between well spacing density and sandbody controlled degree and furthermore meet the requirements of third infilling and tertiary oil recovery, based on the sedimentology principles and comprehensive analyses of Saertu and Putaohua oil formaitons in the west part of East Faulted Block in No. 1 North Region in Sazhong of Daqing Oilfield, the cross section and sedimentary facies are mapped at the different well spacing densities, all kinds of sandbody spread characteristics under the above conditions are figured out. At the same time, the influences of different well spacing densities on oil layer connectivity are explored ; the close relation between the above two is disclosed. With the help of the studied method of the line gridding of sedimentary facies belts, the sandbody controlled degrees at the different well spacing densities are calculated, and the quantita- tive relations between the above two are pointed out for all kinds of sandbodies. The studies show that the denser the well spacing density is, the higher controlled degree of the sandbodies is. When the density reaches 115 wells/ km2, there are still 10% of sandbodies difficult to control.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2010年第1期47-50,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
井网密度
砂体展布
连通状况
控制程度
well spacing density
sandbody spread
connection condition
controlled degree
