摘要
根据钻井中途测试（ＤＳＴ）、重复地层测试（ＲＦＴ）、镜质体反射率（Ｒ０）、流体包裹体分析和粘土矿物Ｘ射线衍射全定量分析等综合研究发现，莺－琼盆地ＹＡ１３－１气田存在４期热流体活动；南侧的崖南地区和西侧的莺歌海盆地是其两个重要的热流体物质源和动力源；多期热流体活动在ＹＡ１３－１地区不仅造成热异常和物质迁移，而且还引起了不同的有机／无机成岩响应，如骨架颗粒的多期溶蚀作用、至少两期的次生加大作用、粘土矿物转化和有机质热成熟作用异常。第二、第三期热流体因出溶作用形成ＹＡ１３－１气田大规模的天然气聚集。
According to the composite analysis for information of drill stem tests, repeated formation tests,vitrinite reflectances(RO),fluid inclusions and clay minerals X-ray diffusions,some facts have been found as the following:(1)four events of thermal fluid flows occurred in YA13-1 gas field of Yinggehai-Qiongdongnan basins, South China Sea;(2)the thermal fluids came from two sources,the southern Yanan sag and the western Yinggehai basin;(3)the thermal fluid flows,as the mode of forced convection, have not only caused the thermal anomaly,but also resulted in different organic/inorganic diagenetic responses in YA13-1 area,e.g.periodic dissolutions of skeletal grains and overgrowth of K-feldspar and quartz,clay mineral transformation and anomalies of organic matter pyrolysis maturation in source rocks.In addition,the thermal fluid convections and exsolution during the second and third events led to the natural gas accumulation with great content and enhanced the quality of the reservoirs of Lingshui Formation im YA13-1 gas field.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1995年第3期276-282,共7页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金
关键词
气田
热流体活动
无机成岩
有机成岩
YA13-1 gas field,thermal convection,organic/inorganic diagenetic responses.
