Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Fault-Block Oil & Gas Field》 2011-05
Add to Favorite Get Latest Update

Discussion on some development problems in Zhangyuan Oilfield

Xiao Min~1,Xiao Jiwei~2 (1.Zhongyuan Oilfield Company,SINOPEC,Puyang 457001,China;2.Research Institute of Oil Production Engineering and Technology, Zhongyuan Oilfield Company,SINOPEC,Puyang 457001,China)  
The oilfields discovered before the 1970s in our country mostly belongs to the continental deposit and they have multi- oil layer reservoirs with strong heterogeneity.Oil property mainly belong to middle-high viscosity and oil-water viscosity ratio is high than 20.During the injection development,the strong heterogeneity and displacement of oil by water are formed.The basic law of injection development is the injection development at the early stage,fast water-cut rising and low recovery degree at middle stage.Quite a number of water flooding recoverable reserves can be recovered at the high water-cut stage.The reservoirs discovered at the end of the 70s in Zhongyuan Oilfield are relatively homogenous and the oil property is good with low viscosity,low density and low oil -water viscosity,which is different from the above developed oilfields.Therefore,the heterogeneity and non -piston phenomenon can be avoided.At the early and middle stages of injection development,the water-cut rises fast and the oil recovery degree is high.Quite a number of water flooding recoverable reserves can be recovered at the middle to low water-cut stages,which are proved by development practices of S_1 reservoir in Pucheng of Zhongyuan Oilfield.The reservoirs in Zhongyuan Oilfield have the characteristics of small pores,small throats and low permeability,which is greatly different from the oilfields with big pores,big throats and high permeability.Development must be treated differently in order to protect reservoir and realize high-efficiency injection development.
【CateGory Index】: TE357.6
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved