泰国呵叻盆地二叠系Pha Nok Khao组储层特征研究
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摘要
为明确泰国呵叻盆地二叠系Pha Nok Khao组储层特征,对研究区YPT1、YPT2和YPT3三口取心井岩心进行了详细观察、铸体薄片及扫描电镜分析,进而对二叠系Pha Nok Khao组岩性特征、裂缝及孔隙发育特征进行了系统的研究。研究表明:二叠系Pha Nok Khao组碳酸盐岩以灰色、浅灰色、深灰色泥晶灰岩、深灰色含云质泥晶灰岩、深灰色含碳泥晶灰岩和深黑色碳质泥岩为主;性硬、脆,质较纯。储层裂缝较发育,主要为细缝及微裂缝,但裂缝均被方解石完全充填,部分微裂缝未被充填。孔隙发育程度差到不发育,偶见晶间微孔隙零星分布。碳酸盐岩主要以泥晶结构为主,发育少量微晶结构。未见溶蚀孔隙和白云岩化晶间孔隙发育。
In order to determine the reservoir characteristics of Pha Nok Khao formation in Permian of Khroat Basin, Thailand, the cores from three wells YPT1, YPT2 and YPT3 in the study area were observed in detail, and cast sheet was analyzed by scanning electron microscope. The characteristics of lithology, fracture and pore development were studied systematically. The results shows that the Permian Pha Nok Khao formation carbonate rocks are gray, light gray, dark gray micrite, dark gray cloud mass micrite, dark gray carbon micrite and deep black carbonaceous shale; The reservoir fractures are relatively developed, mainly include fine fractures and micro fractures, but the fractures are completely filled by calcite, and some of them are not filled. The degree of pore development is poor or undeveloped, and intercrystalline micropore distribution is sporadic.Carbonate rocks are mainly composed of micritic structures, and a small number of microcrystalline structures have been developed. No dissolution pores or dolomite intercrystalline pores have been observed.
In order to determine the reservoir characteristics of Pha Nok Khao formation in Permian of Khroat Basin, Thailand, the cores from three wells YPT1, YPT2 and YPT3 in the study area were observed in detail, and cast sheet was analyzed by scanning electron microscope. The characteristics of lithology, fracture and pore development were studied systematically. The results shows that the Permian Pha Nok Khao formation carbonate rocks are gray, light gray, dark gray micrite, dark gray cloud mass micrite, dark gray carbon micrite and deep black carbonaceous shale; The reservoir fractures are relatively developed, mainly include fine fractures and micro fractures, but the fractures are completely filled by calcite, and some of them are not filled. The degree of pore development is poor or undeveloped, and intercrystalline micropore distribution is sporadic.Carbonate rocks are mainly composed of micritic structures, and a small number of microcrystalline structures have been developed. No dissolution pores or dolomite intercrystalline pores have been observed.
引文
[1]胡双全,杜贵超,甄胜利.泰国呵叻盆地二叠系Pha Nok Khao组碳酸盐岩沉积相特征[J].沉积学报, 2017, 35(4):789-796.
[2]杜贵超,仓辉,胡双全.泰国呵叻盆地二叠系碳酸盐岩元素地球化学特征与古环境意义[J].世界地质, 2017, 36(1):135-143.
[3]钟维敷,李志伟,单卫国.呵叻盆地钾镁盐矿沉积特征及成因探讨[J].云南地质, 2003, 22(2):142-150.
[4]于晓菲,于子超,薛迪,等.泰国呵叻盆地H区块二叠系-三叠系构造特征研究[J].石油地质与工程, 2017, 31(5):9-14.
[5]于晓菲,李建明,李超.呵叻盆地H区二叠系PhaNokKhao组沉积特征与沉积模式[J]. 2017, 4(4):12-21.
[6]杜贵超,仓辉,张森森,等.呵叻盆地L区块裂缝发育特征及形成机理[J].特种油气藏, 2016, 33(6):21-25.
[7]马贵阳,刘晓国,郑平.埋地管道周围土壤水热耦合温度场的数值模拟[J].辽宁石油化工大学学报,2007,27(1):55-58.
[2]杜贵超,仓辉,胡双全.泰国呵叻盆地二叠系碳酸盐岩元素地球化学特征与古环境意义[J].世界地质, 2017, 36(1):135-143.
[3]钟维敷,李志伟,单卫国.呵叻盆地钾镁盐矿沉积特征及成因探讨[J].云南地质, 2003, 22(2):142-150.
[4]于晓菲,于子超,薛迪,等.泰国呵叻盆地H区块二叠系-三叠系构造特征研究[J].石油地质与工程, 2017, 31(5):9-14.
[5]于晓菲,李建明,李超.呵叻盆地H区二叠系PhaNokKhao组沉积特征与沉积模式[J]. 2017, 4(4):12-21.
[6]杜贵超,仓辉,张森森,等.呵叻盆地L区块裂缝发育特征及形成机理[J].特种油气藏, 2016, 33(6):21-25.
[7]马贵阳,刘晓国,郑平.埋地管道周围土壤水热耦合温度场的数值模拟[J].辽宁石油化工大学学报,2007,27(1):55-58.