Geoscience ›› 2017, Vol. 31 ›› Issue (06): 1241-1250.
• Petroleum Geology • Previous Articles Next Articles
DING Xiong1,2(), WU Han2, WANG Xingzhi1,2, TANG Qingsong3, MA Hualing4
Received:
2017-05-30
Revised:
2017-07-21
Online:
2017-12-10
Published:
2017-12-25
CLC Number:
DING Xiong, WU Han, WANG Xingzhi, TANG Qingsong, MA Hualing. Genetic Types of Carbonate Shoal Reservoirs of Triassic Period, Sichuan Basin[J]. Geoscience, 2017, 31(06): 1241-1250.
成因类型 | 代表性储集空间 | 成因机理 | |
---|---|---|---|
残余粒间孔型滩相储层 | 残余粒间孔+粒间溶孔 | 残余粒间孔的保存 | |
岩溶型滩相储层 | 早期岩溶型滩相储层 | 粒内溶孔+铸模孔 | 早期大气淡水组构选择性溶蚀 |
埋藏岩溶型滩相储层 | 溶蚀孔洞+溶扩孔洞 | 埋藏环境中酸性流体溶蚀 | |
表生岩溶型滩相储层 | 组构非选择性溶蚀孔、洞、缝 | 地表和地下水组构非选择性溶蚀 | |
白云岩化型滩相储层 | 晶间孔+晶间溶孔 | 白云岩化作用 | |
复合型滩相储层 | 多种孔、洞、缝组合 | 两种或两种以上成因叠加 |
Table 1 Genetic types of carbonate shoal reservoirs in Triassic period, Sichuan basin
成因类型 | 代表性储集空间 | 成因机理 | |
---|---|---|---|
残余粒间孔型滩相储层 | 残余粒间孔+粒间溶孔 | 残余粒间孔的保存 | |
岩溶型滩相储层 | 早期岩溶型滩相储层 | 粒内溶孔+铸模孔 | 早期大气淡水组构选择性溶蚀 |
埋藏岩溶型滩相储层 | 溶蚀孔洞+溶扩孔洞 | 埋藏环境中酸性流体溶蚀 | |
表生岩溶型滩相储层 | 组构非选择性溶蚀孔、洞、缝 | 地表和地下水组构非选择性溶蚀 | |
白云岩化型滩相储层 | 晶间孔+晶间溶孔 | 白云岩化作用 | |
复合型滩相储层 | 多种孔、洞、缝组合 | 两种或两种以上成因叠加 |
Fig.5 Schematic diagram of early pores and throats preserved of the carbonate layers and compact carbonate layers influenced by burial karstification in Triassic, Sichuan basin
Fig.6 Columnar section showing vertical distribution of supergene karstification and reservoir of Lei 4 Member, Leikoupo Formation in Middle Triassic, well Lg39
成因类型 | 代表性储集空间 | 喉道类型 | 孔渗特征 | 储层类型 | 主控因素 | |
---|---|---|---|---|---|---|
残余粒间孔型滩相储层 | 残余粒间孔+粒间溶孔 | 缩颈喉道和管束状喉道为主 | 中孔中渗 | 孔隙型 | 早期胶结作用不活跃、初期压实的顺利进行、沉积速率高 | |
岩溶型滩 相储层 | 早期岩溶型滩相储层 | 粒内溶孔+铸模孔 | 喉道欠发育 | 中孔低渗 | 孔隙型 | 古微地貌高地、海平面相对下降、古气候温暖潮湿 |
埋藏岩溶型滩相储层 | 溶蚀孔洞+溶扩孔洞 | 缩颈喉道和管束状喉道为主 | 高-中孔中渗 | 孔隙型或孔洞型 | 成岩流体性质、先期的孔隙系统、埋藏成岩流体的来源方向 | |
表生岩溶型滩相储层 | 组构非选择性溶蚀孔、洞、缝 | 缩颈喉道、管束状喉道和片状喉道 | 高-中孔中渗 | 孔隙型或孔洞型 | 海平面下降、构造运动 | |
白云岩化型滩相储层 | 晶间孔+晶间溶孔 | 片状喉道为主 | 中孔中渗 | 孔隙型 | 白云岩化作用 | |
复合型滩相储层 | 多种孔、洞、缝组合 | 缩颈喉道、管束状喉道和片状喉道 | 高-中孔中渗 | 孔隙型或孔洞型 | 两种或两种以上成因叠加 |
Table 2 Genetic types of carbonate shoal reservoirs in Triassic period, Sichuan basin
成因类型 | 代表性储集空间 | 喉道类型 | 孔渗特征 | 储层类型 | 主控因素 | |
---|---|---|---|---|---|---|
残余粒间孔型滩相储层 | 残余粒间孔+粒间溶孔 | 缩颈喉道和管束状喉道为主 | 中孔中渗 | 孔隙型 | 早期胶结作用不活跃、初期压实的顺利进行、沉积速率高 | |
岩溶型滩 相储层 | 早期岩溶型滩相储层 | 粒内溶孔+铸模孔 | 喉道欠发育 | 中孔低渗 | 孔隙型 | 古微地貌高地、海平面相对下降、古气候温暖潮湿 |
埋藏岩溶型滩相储层 | 溶蚀孔洞+溶扩孔洞 | 缩颈喉道和管束状喉道为主 | 高-中孔中渗 | 孔隙型或孔洞型 | 成岩流体性质、先期的孔隙系统、埋藏成岩流体的来源方向 | |
表生岩溶型滩相储层 | 组构非选择性溶蚀孔、洞、缝 | 缩颈喉道、管束状喉道和片状喉道 | 高-中孔中渗 | 孔隙型或孔洞型 | 海平面下降、构造运动 | |
白云岩化型滩相储层 | 晶间孔+晶间溶孔 | 片状喉道为主 | 中孔中渗 | 孔隙型 | 白云岩化作用 | |
复合型滩相储层 | 多种孔、洞、缝组合 | 缩颈喉道、管束状喉道和片状喉道 | 高-中孔中渗 | 孔隙型或孔洞型 | 两种或两种以上成因叠加 |
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