CAJ | 학술논문

琼东南盆地深水区陵水凹陷下渐新统崖城组广泛发育潮坪-湖沉积体系，其煤系地层在高地温场背景下广泛生气，是主力烃源岩；中新统莺歌海组-黄流组沉积期琼东南盆地发育中央峡谷水道，横穿陵水凹陷，水道砂体是有利的油气聚集场所，水道砂体周围被广泛发育的半深海-深海相泥岩覆盖，封盖条件优越；热流体成因的底辟带为崖城组煤系地层烃源岩生成的油气运移到莺歌海组-黄流组水道砂体中提供了有效通道。上述因素共同控制了陵水凹陷成为琼东南盆地深水区潜在富气凹陷，勘探发现了陵水1-1气田，显示出良好的资源潜力和勘探前景。
경동남분지심수구릉수요함하점신통애성조엄범발육조평-호침적체계，기매계지층재고지온장배경하엄범생기，시주력경원암；중신통앵가해조-황류조침적기경동남분지발육중앙협곡수도，횡천릉수요함，수도사체시유리적유기취집장소，수도사체주위피엄범발육적반심해-심해상니암복개，봉개조건우월；열류체성인적저벽대위애성조매계지층경원암생성적유기운이도앵가해조-황류조수도사체중제공료유효통도。상술인소공동공제료릉수요함성위경동남분지심수구잠재부기요함，감탐발현료릉수1-1기전，현시출량호적자원잠력화감탐전경。
In the western deep-water area of Qiongdongnan Basin,northern South China Sea,a tidal flat-lagoon sedimentary systemwas developed widely in the early Oligocene Yacheng Formation of Lingshui sag,where coal measure strata generated gases exten-sively in high-temperature geothermal fields and served as the major hydrocarbon source rocks.During the depositional period ofMi-ocene Yinggehai-Huangliu Formation,the central canyon was developed across Lingshui sag,providing river-course sand bodies thatare favorable spaces for oil and gas accumulation;the periphery of these sand bodies were covered by hemipelagic-abyssal mud-stone,showing advantageous sealing and capping conditions.Thermal fluid-related diapirs provided an effective pathway for themigration of oil and gas generated by coal measure strata of the Yacheng Formation to sand bodies of the Yinggehai-HuangliuFormation.Under the joint actions of the above factors,Lingshui sag has evolved into a potential gas-rich sag in the deep-waterarea of Qiongdongnan Basin.The discovery of Lingshui 1-1 gas field in Lingshui sag demonstrates the source potential and explo-ration prospects of the sag.