碳酸鹽巖成巖作用及其對儲層的影響——以塔中順南地區(qū)一間房組為例
發(fā)布時間:2018-03-19 02:04
本文選題:一間房組 切入點:碳酸鹽巖 出處:《巖性油氣藏》2016年05期 論文類型:期刊論文
【摘要】:為了查清儲層發(fā)育規(guī)律,提高勘探成功率,運用巖心觀察、鑄體薄片鑒定、陰極發(fā)光等手段,結(jié)合測井、孔滲等資料,研究了塔中順南地區(qū)奧陶系一間房組碳酸鹽巖的儲層特征、成巖作用及其對儲層發(fā)育的影響。結(jié)果表明:研究區(qū)奧陶系一間房組碳酸鹽巖儲層的巖石類型主要為顆;?guī)r、微晶灰?guī)r、藻黏結(jié)灰?guī)r;儲集空間類型以溶蝕孔洞和裂縫為主,為裂縫型和裂縫-孔洞型儲層;一間房組儲層基質(zhì)孔隙度最小值為0.20%,最大值為3.90%,平均值為1.52%;滲透率最小值為0.003 m D,最大值為5.84 m D,平均值為0.62 m D,儲層基質(zhì)物性較差,以發(fā)育Ⅲ類儲層為主;一間房組碳酸鹽巖的成巖作用類型復(fù)雜多樣,主要有膠結(jié)作用、壓實壓溶作用、溶蝕(巖溶)作用、破裂作用等,其中膠結(jié)作用是最主要的破壞性成巖作用,溶蝕(巖溶)作用和破裂作用均是主要的建設(shè)性成巖作用。
[Abstract]:In order to find out the law of reservoir development and improve the success rate of exploration, the core observation, casting thin section identification, cathodoluminescence and so on are used to combine well logging, pore permeability and other data. The reservoir characteristics, diagenesis and its influence on reservoir development of the Ordovician Yijianfang formation in Shunnan area of Tazhong are studied. The results show that the rock types of the Ordovician Yijianfang formation carbonate reservoir in the study area are mainly granular limestone. Microcrystalline limestone, algal cemented limestone, the reservoir space type is mainly composed of dissolved pores and fractures, which are fracture type and fracture-pore type reservoir. The minimum value of reservoir matrix porosity is 0.20, the maximum value is 3.90, the average value is 1.52.The minimum permeability is 0.003 mm D, the maximum value is 5.84 mm D, the average value is 0.62 mm D, and the physical properties of reservoir matrix is poor, mainly developed type 鈪,
本文編號:1632315
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