Analysis of Reservoir Formation of Well Degu 2 in Linqing Depression
单位
(中国地质大学, 北京100083 )
Organization
China University of Geosciences, Beijing 100083, China
摘要
德古2井流体包裹体、天然气组分及碳同位素分析结果表明: 1)油气进入德古2
井圈闭的时间是在沙三段—馆陶组沉积时期; 2)在烃源岩的低熟和成熟阶段早期, 油气就开始
运移、聚集于德古2井圈闭; 3)烃类气体主要来自于诜牗橞根的早期干酪根的裂解气, 表现
出的是低熟的煤成气特征, 天然气成熟度R0约为0.8%。从油气运移角度分析并指出, 德古2
井获低产气流的主要原因是烃源岩生排烃能力低和储层储集性差。
Abstract
The ana ly sis results of fluid inc lusion, gas components and carbon isotope o fW e ll Degu 2 show tha t: ① it is in the per iod o f Es3-Ng sed im enta tion w hen the pe tro leum accumu lated to the trap o fW e ll Degu 2; ② the pe tro leum began to m ig rate and accumu la te to the trap o fW e ll Degu 2 w hen the source rock w as in low m atur ity stage and ea rly stage o f m aturity; ③ gaseous hydrocarbon wh ich is characterized by low-ma tur ity coa-l derived gas is ma in ly from the cracked gas of type Ⅲ kerogen in early tim e. The m aturity o f gas is 0. 8% around. Ana lysed from the view o f petro leum m igration, it is po in ted out that the m a in failure reason ofW e ll Degu 2 is the poo r capacity o f hydrocarbongenera ting and expulsion and the poo r phys ica l prope rty o f reservo ir.
关键词：
德古2井;临清坳陷;成藏分析;
Keywords:
W e ll Degu 2, L inqing depression, Analysis o f reservoir fo rm ation;
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