滇黔北探区YQ1 井页岩气的发现及其意义

doi:10.11885/j.issn.1674-5086.2014.04.30.04

摘要/Abstract

摘要：

YQ1 井钻遇的龙马溪组—五峰组优质黑色页岩单层厚度大，有机碳含量高，有机质成熟度较高，微孔隙、微
裂缝发育。分析化验结果表明，YQ1 井页岩层甲烷吸附气含量随埋藏深度、地层压力、有机质及黏土含量的增加而增
大，含气量达1.0～3.0 m3/t，证实龙马溪组底部是本区页岩气勘探的现实目的层，为具有商业开采价值的优质页岩气
层。针对“强改造、高演化”的中国南方海相勘探领域，页岩气成藏赋存具有“构造沉积控局势→保存条件控气藏→岩性物性控甜点”的地质特色，落实富有机质、超常地层压力、脆性微孔缝发育的页岩气甜点区是页岩气勘探评价的第
一要务，寻找构造变形较弱、远离通天断层、区域盖层发育和整体保存良好的宽阔向斜区是海相构造坳陷页岩气甜点
区评价优选的首要因素。

关键词: 滇黔北探区, 页岩气, 龙马溪组, 页岩气赋存, 评价优选

Abstract:

The high quality shale of Wufeng-Longmaxi formations that was encountered by well YQ-1 during the drilling process
is characterized by thick single layer，high TOC content，high organic matter maturity，and well developed microscopic
pore and cracks. The analysis results reveal that the absorbed methane content of core shale from well YQ-1 increases with
the rise of burial depth，formation pressure，content of organic matter and clay minerals. The gas in place（GIP）of the shale
reservoirs ranges from 1.0 to 3.0 m3/t，indicating that the shale horizon of the basal of Longmaxi formation and Wufeng formation
is the first target stratum with commercial development value. The marine gas shale in Southern China is characterized of
“intensive reformation，and high maturity”，and because the occurrence of shale gas resources is characterized by the control
factors on distribution，gas pool，and sweet pot that are controlled by tectonics，storage condition and physical properties of
rocks respectively. The emergency mission on shale gas exploration is to identify the sweet spot areas that are characterized by
organic richness，abnormal formation pressure，and good development of brittle microscopic pore and cracks. The sweet spots
of marine shale gas often develop in broad syncline far from faults that reach the surface and is of weak tectonic deformation，
good cap rock. The strategy of marine shale gas exploration and development in Southern China should follow the sequences
of filtering sweet spots firstly，and then setting demonstration area，finally carrying out large-scale development.

Key words: northern YunNan-Guizhou provinces, shale gas, Longmaxi Formatiom, shale gas occurrence, evalution and
selective preference

梁兴，叶熙，张朝，张介辉，舒红林. 滇黔北探区YQ1 井页岩气的发现及其意义[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2014.04.30.04.

Liang Xing, Ye Xi, Zhang Zhao, Zhang Jiehui, Shu Honglin. Significance of Discovery of Shale Gas From Well YQ-1 in Northern
Yunnan-Guizhou Provinces，China[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2014.04.30.04.

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