摘要
复杂碳酸盐岩气藏常交错发育不同尺度的孔、缝、洞,连通情况复杂,不同气藏的储层类型及发育状况差异很大。此种差异最终体现在气藏的生产动态特征上,给气田开发带来很大的不确定性。在储层类型识别中,由于其极强的非均质性,静态方法探测范围不足的缺陷将更加突现,动态方法的优势就显得更为突出。文中通过深入剖析各种动态资料及其在不同储层中的响应特征,最终确定出以双对数曲线、采气指数曲线、压力恢复历史曲线特征为整体的储层类型动态综合识别方法,并建立了常见碳酸盐岩气藏的储层类型识别模版。该方法极大地克服了以往仅依靠双对数曲线的多解性,拓展了动态方法的研究思路,对复杂碳酸盐岩储层类型的识别具有重要指导意义。
The carbonate gas reservoir is extremely complicated with enormous pores, fissures and caves of different sizes and connectivity, which brings significant uncertainty to gas field development. There are two kinds of existing reservoir identification methods. The dynamic method is considered to be more effective to deal with the heterogeneity of complex carbonate gas reservoir than the static method. Through in-depth mechanism study of dynamic information and its response characteristic on different reservoir type, the integrated dynamic reservoir identification method consisted of the log-log curve, gas productivity index curve and pressure history curve was introduced in this paper. Based on this method, an identification pattern plate was founded, through which several basic reservoir type could be feasibly distinguished. The method fundamentally diminished the interpretation ambiguity of the log-log analysis method, thus increased the reliability of dynamic methods. It was proved to have great significance on the identification of complex carbonate gas reservoir type.
出处
《断块油气田》
CAS
2014年第3期326-329,共4页
Fault-Block Oil & Gas Field
基金
国家科技重大专项"阿姆河右岸中区天然气开发示范工程"(2011ZX05059)
关键词
碳酸盐岩气藏
储层类型
动态方法
综合识别
双对数曲线
采气指数
carbonate gas reservoir reservoir type dynamic method integrated identification log-log curve gas productivity index
