川南地区深层页岩气富集条件差异分析与启示

张成林,赵圣贤,张鉴,常程,夏自强,曹埒焰,田冲,冯江荣,方圆,周翊

Analysis and enlightenment of the difference of enrichment conditions for deep shale gas in southern Sichuan Basin

Cheng-lin ZHANG,Sheng-xian ZHAO,Jian ZHANG,Cheng CHANG,Zi-qiang XIA,Lie-yan CAO,Chong TIAN,Jiang-Rong FENG,Yuan FANG,Yi ZHOU

表1 LZ区块、DZ区块五峰组—龙一₁亚段各小层储层参数实验数据统计

Table 1 Experimental data statistical table for reservoirs in layers of O₃w-S₁l^1-1, LZ block and DZ block

区块	地层		地层厚度/m	脆性矿物含量/%	TOC/%	孔隙度/%	含气量/(m3/t)	含气饱和度 /%
LZ	龙一₁亚段	龙一₁⁴小层	$\frac{55.7 ~ 68}{61.2}$	$\frac{28 ~ 81}{55.5}$	$\frac{0.16 ~ 3.9}{2.2}$	$\frac{2.2 ~ 7.4}{5.1}$	$\frac{1.1 ~ 8.7}{5.6}$	$\frac{55.0 ~ 71.4}{62.4}$
		龙一₁³小层	$\frac{5 ~ 9.1}{6.8}$	$\frac{45 ~ 87}{64.9}$	$\frac{2.18 ~ 4.76}{3.4}$	$\frac{3.77 ~ 7.63}{5.5}$	$\frac{4.3 ~ 9.5}{7.0}$	$\frac{60.6 ~ 74.4}{69.2}$
		龙一₁²小层	$\frac{2.9 ~ 6.2}{4.4}$	$\frac{64 ~ 90}{82.6}$	$\frac{3.1 ~ 4.56}{3.8}$	$\frac{3.97 ~ 6.8}{5.1}$	$\frac{6.2 ~ 9.0}{7.8}$	$\frac{67.1 ~ 86.6}{77.7}$
		龙一₁¹小层	$\frac{1.5 ~ 3.2}{1.9}$	$\frac{55 ~ 82}{75.3}$	$\frac{3.8 ~ 7.3}{4.8}$	$\frac{4.22 ~ 6.35}{4.9}$	$\frac{6.6 ~ 9.5}{7.9}$	$\frac{64.6 ~ 86.8}{76.7}$
	五峰组		$\frac{5.9 ~ 10.8}{8.2}$	$\frac{48 ~ 89}{69.2}$	$\frac{0.2 ~ 5.1}{2.7}$	$\frac{1.31 ~ 5.49}{3.5}$	$\frac{1.7 ~ 7.6}{4.1}$	$\frac{68.1 ~ 73.8}{71.1}$
DZ	龙一₁亚段	龙一₁⁴小层	$\frac{20.7 ~ 31.8}{26.1}$	$\frac{41.2 ~ 76.3}{58.6}$	$\frac{0.52 ~ 2.24}{1.4}$	$\frac{1.92 ~ 5.88}{4.0}$	$\frac{1.9 ~ 5.8}{3.9}$	$\frac{44.4 ~ 61.8}{56.2}$
		龙一₁³小层	$\frac{1.2 ~ 2.7}{2.1}$	$\frac{42.2 ~ 83.8}{67.1}$	$\frac{1.39 ~ 3.42}{2.5}$	$\frac{1.8 ~ 6.5}{4.2}$	$\frac{4.0 ~ 5.4}{4.6}$	$\frac{47.9 ~ 69.4}{60.8}$
		龙一₁²小层	$\frac{1.2 ~ 2.6}{1.6}$	$\frac{63.8 ~ 88.6}{74.8}$	$\frac{1.89 ~ 4.77}{2.8}$	$\frac{1.5 ~ 5.6}{3.5}$	$\frac{3.7 ~ 6.6}{4.8}$	$\frac{30.3 ~ 73.9}{58.9}$
		龙一₁¹小层	$\frac{1.2 ~ 2.4}{1.8}$	$\frac{71.2 ~ 89.4}{80.9}$	$\frac{3.18 ~ 5.31}{4.3}$	$\frac{1.77 ~ 6.01}{4.2}$	$\frac{5.6 ~ 8.5}{6.7}$	$\frac{51.3 ~ 76.5}{65.3}$
	五峰组		$\frac{6.4 ~ 8.8}{7.7}$	$\frac{58.9 ~ 88.9}{82.5}$	$\frac{0.31 ~ 3.58}{1.8}$	$\frac{2.0 ~ 5.0}{3.6}$	$\frac{0.33 ~ 5.0}{2.5}$	$\frac{48.8 ~ 69.2}{62.1}$