Oil & Gas Geology ›› 2022, Vol. 43 ›› Issue (2): 341-352.doi: 10.11743/ogg20220208
• Petroleum Geology • Previous Articles Next Articles
Chengpeng Su1,2(), Ying He1,2(), Xiaobo Song2, Bo Dong1, Xiaoqi Wu3
Received:
2020-12-14
Revised:
2022-01-22
Online:
2022-04-01
Published:
2022-03-11
Contact:
Ying He
E-mail:suchengpeng90@163.com;heywz@126.com
CLC Number:
Chengpeng Su, Ying He, Xiaobo Song, Bo Dong, Xiaoqi Wu. Reinterpretation of gas sources in the Middle Triassic Leikoupo Formation in Western Sichuan gas field, Sichuan Basin[J]. Oil & Gas Geology, 2022, 43(2): 341-352.
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Table 1
Data of natural gas compositions in the Lei 43 at different structures, Western Sichuan gas field"
构造 | 样品编号 | 产层段 | 井深/m | 组分含量/% | ||||
---|---|---|---|---|---|---|---|---|
CH4 | C2H6 | N2 | CO2 | H2S | ||||
石羊场构造 | YS1-1 | 下储层 | 6 182~6 252 | 90.09 | 0.12 | 1.40 | 4.59 | 3.70 |
YS1-2 | 下储层 | 6 182~6 252 | 89.62 | 0.12 | 1.35 | 4.85 | 3.97 | |
YS1-3 | 下储层 | 6 182~6 252 | 88.13 | 0.12 | 1.44 | 5.79 | 4.41 | |
下储层平均值 | 89.28 | 0.12 | 1.40 | 5.08 | 4.03 | |||
金马构造 | PZ1-1 | 下储层 | 5 814~5 866 | 90.29 | 0.12 | 1.25 | 4.59 | 3.72 |
PZ3-5-1 | 下储层 | 6 400~6 600 | 90.59 | 0.12 | 1.13 | 4.40 | 3.73 | |
PZ3-5-2 | 下储层 | 6 400~6 600 | 90.72 | 0.12 | 1.12 | 4.39 | 3.62 | |
PZ3-5-3 | 下储层 | 6 400~6 600 | 90.29 | 0.12 | 1.25 | 4.59 | 3.72 | |
PZ3-5-4 | 下储层 | 6 400~6 600 | 89.82 | 0.17 | 1.14 | 4.29 | 4.53 | |
PZ3-5-5 | 下储层 | 6 400~6 600 | 89.95 | 0.17 | 1.09 | 4.30 | 4.45 | |
PZ3-5-6 | 下储层 | 6 400~6 600 | 89.94 | 0.17 | 1.08 | 4.29 | 4.49 | |
PZ3-5-7 | 下储层 | 6 400~6 600 | 90.05 | 0.17 | 1.08 | 4.31 | 4.36 | |
下储层平均值 | 90.21 | 0.15 | 1.14 | 4.40 | 4.08 | |||
PZ3-5-8 | 上储层 | 6 170~6 257 | 91.25 | 0.17 | 0.96 | 4.09 | 3.48 | |
PZ3-5-9 | 上储层 | 6 170~6 258 | 91.14 | 0.15 | 1.07 | 4.14 | 3.45 | |
PZ3-5-10 | 上储层 | 6 170~6 259 | 91.24 | 0.15 | 0.97 | 4.14 | 3.47 | |
PZ3-5-11 | 上储层 | 6 170~6 260 | 91.44 | 0.15 | 1.03 | 4.04 | 3.29 | |
上储层平均值 | 91.27 | 0.16 | 1.01 | 4.10 | 3.42 | |||
PZ3-4-1 | 上下合产 | 6 015~6 388 | 90.84 | 0.12 | 1.16 | 4.44 | 3.39 | |
PZ3-4-2 | 上下合产 | 6 015~6 389 | 90.33 | 0.17 | 1.17 | 4.46 | 3.83 | |
PZ3-4-3 | 上下合产 | 6 015~6 390 | 90.34 | 0.17 | 1.17 | 4.47 | 3.82 | |
PZ3-4-4 | 上下合产 | 6 015~6 391 | 90.36 | 0.15 | 1.19 | 4.46 | 3.80 | |
PZ3-4-5 | 上下合产 | 6 015~6 392 | 90.37 | 0.17 | 1.16 | 4.47 | 3.80 | |
鸭子河构造 | YaS1-1 | 下储层 | 5 757~5 837 | 86.69 | 0.13 | 1.19 | 6.22 | 5.67 |
YaS1-2 | 下储层 | 5 757~5 837 | 89.23 | 0.13 | 1.13 | 5.83 | 3.60 | |
YaS1-3 | 下储层 | 5 757~5 837 | 87.20 | 0.11 | 0.94 | 6.09 | 5.60 | |
YaS1-4 | 下储层 | 5 757~5 837 | 87.90 | 0.12 | 0.94 | 5.51 | 5.51 | |
YaS1-5 | 下储层 | 5 757~5 837 | 87.80 | 0.12 | 0.91 | 5.35 | 5.78 | |
YaS1-6 | 下储层 | 5 757~5 837 | 87.90 | 0.12 | 1.05 | 5.33 | 5.57 | |
YaS1-7 | 下储层 | 5 757~5 837 | 88.10 | 0.12 | 0.92 | 5.34 | 5.48 | |
YaS1-8 | 下储层 | 5 757~5 837 | 88.00 | 0.11 | 0.92 | 5.34 | 5.60 | |
YaS1-9 | 下储层 | 5 757~5 837 | 88.20 | 0.11 | 0.92 | 5.30 | 5.46 | |
YaS1-10 | 下储层 | 5 757~5 837 | 88.70 | 0.14 | 0.99 | 5.16 | 4.95 | |
YaS1-11 | 下储层 | 5 757~5 837 | 88.40 | 0.11 | 0.96 | 5.16 | 5.38 | |
YaS1-12 | 下储层 | 5 757~5 837 | 88.50 | 0.11 | 0.93 | 5.35 | 5.60 | |
PZ7-1-1 | 下储层 | 6 315~6 400 | 87.56 | 0.18 | 0.84 | 5.55 | 5.83 | |
PZ7-1-2 | 下储层 | 6 315~6 400 | 87.61 | 0.18 | 0.80 | 5.56 | 5.82 | |
PZ7-1-3 | 下储层 | 6 315~6 400 | 87.55 | 0.18 | 0.80 | 5.54 | 5.86 | |
PZ7-1-4 | 下储层 | 6 315~6 400 | 87.57 | 0.18 | 0.81 | 5.56 | 5.84 | |
下储层平均值 | 87.93 | 0.13 | 0.94 | 5.51 | 5.47 | |||
PZ7-1-5 | 上储层 | 5 965~6 075 | 87.51 | 0.19 | 0.94 | 6.25 | 5.05 | |
PZ7-1-6 | 上储层 | 5 965~6 075 | 87.57 | 0.18 | 0.98 | 6.25 | 4.96 | |
PZ7-1-7 | 上储层 | 5 965~6 075 | 87.30 | 0.18 | 0.92 | 6.27 | 5.28 | |
PZ7-1-8 | 上储层 | 5 965~6 075 | 87.39 | 0.18 | 0.90 | 6.26 | 5.23 | |
上储层平均值 | 87.44 | 0.18 | 0.94 | 6.26 | 5.13 | |||
PZ8-5-1 | 上下合产 | 5 904~6 575 | 87.50 | 0.12 | 0.97 | 6.66 | 4.74 | |
PZ8-5-2 | 上下合产 | 5 904~6 576 | 88.18 | 0.17 | 0.83 | 4.99 | 5.79 | |
PZ8-5-3 | 上下合产 | 5 904~6 577 | 88.21 | 0.17 | 0.83 | 5.00 | 5.77 | |
PZ4-2-1 | 上下合产 | 5 878~6 240 | 88.72 | 0.16 | 0.96 | 5.49 | 4.63 | |
PZ6-2-1 | 上下合产 | 5 095~6 161 | 88.76 | 0.16 | 0.84 | 5.03 | 5.18 | |
PZ6-2-2 | 上下合产 | 5 095~6 162 | 88.61 | 0.17 | 0.84 | 5.08 | 5.27 |
Table 2
Isotopic analysis data of alkanes in the Lei 43 at different structures, Western Sichuan gas field"
构造 | 井号 | 产层段 | 井深/m | 烷烃同位素值/‰ | ||
---|---|---|---|---|---|---|
δ13C1 | δ13C2 | δD1 | ||||
石羊场构造 | YS1* | 下储层 | 6 182 ~ 6 252 | -31.1 | -32.9 | -147 |
鸭子河构造 | YaS1* | 下储层 | 5 757 ~ 5 837 | -30.6 | -32.9 | -147 |
PZ7-1 | 上储层 | 5 965 ~ 6 075 | -31.4 | -31.7 | -143 | |
金马构造 | PZ1# | 下储层 | 5 814 ~ 5 866 | -31.6 | -26.4 | -140 |
PZ3-5 | 上储层 | 6 170 ~ 6 258 | -31.4 | -28.6 | -147 |
Table 3
Bitumen reflectance (Rb) and equivalent vitrinite reflectance (eqRo) of the Lei 4 Member in the Longmenshan piedmont structural belt, Wwestern Sichuan Depression"
样品编号 | 井深/m | 岩性 | Rb/% | eqRo/% (据参考文献[ |
---|---|---|---|---|
LS1-1 | 6 280 | 深灰色含泥质白云岩 | 4.06 | 3.08 |
LS1-2 | 6 390 | 灰黑色灰岩 | 4.76 | 3.55 |
LS1-3 | 6 630 | 灰黑色泥质白云岩 | 3.84 | 2.93 |
LS1-4 | 6 640 | 灰黑色泥质白云岩 | 3.89 | 2.96 |
LS1-5 | 6 810 | 灰色含泥质白云岩 | 3.93 | 2.99 |
PZ1-1* | 5 839 | 灰色灰质云岩 | 3.35 | 2.59 |
PZ115-1 | 6 329 | 灰色灰质云岩 | 2.79 | 2.21 |
PZ115-2 | 6 332 | 灰色灰质云岩 | 2.89 | 2.28 |
YS1-1* | 6 170 | 沥青 | 3.33 | 2.58 |
YaS1-1* | 5 724 | 沥青 | 3.22 | 2.51 |
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