低渗裂缝性储集层的油藏动态特征——以准噶尔盆地东部火烧山油田为例

Behavior Character of Fractured Reservoir with Low Permeability --Take an Example of HuoShaoShan Oil-Field Located in the East of ZhunGer Basin

裂缝性储集层的油藏动态特征与常见的孔隙性储集层油藏动态特征有明显差异。从钻井一开始就有其独特的特征 ,一直到油田开发的整个过程都有显著不同。主要表现在钻井泥浆漏失、有效渗透率比分析渗透率大许多倍、注入井井口压力低、水淹水窜等。本文用于描述裂缝性储集层的油藏动态特征所涉及到的各参数在现场上一般都易于测取得到。主要有 :每口井的孔隙度、渗透率、油井产量、有效厚度、生产压差等参数 ,特征有差异 ,治理手段也就不同。此方法所涉及到的油藏动态资料丰富 ,并且其特征参数计算简单 。

Behavior characters of fractured reservoir are very different from that of common porous reservoir . Fractured reservoir has its unique characters from the beginning of well-drilling to the end of development . The main differences occur in several aspects , such as leaking of drilling mud , far larger of effective permeability than analytical permeability , lower wellhead pressure of injection well and water encroachment . Parameters for describing behavior characters of fractured reservoir can be easily measured, which are porosity , permeability, well production , effective thickness and producing pressure drop of each well . Treatment methods vary with behavior characters .