Oil & Gas Geology ›› 2022, Vol. 43 ›› Issue (5): 1087-1101.doi: 10.11743/ogg20220507
• Petroleum Geology • Previous Articles Next Articles
Zhensheng Shi1(), Shengxian Zhao2, Qun Zhao1, Shasha Sun1(), Tianqi Zhou1, Feng Cheng1, Shaojun Shi3, Jin Wu1
Received:
2022-03-10
Revised:
2022-07-19
Online:
2022-10-01
Published:
2022-09-02
Contact:
Shasha Sun
E-mail:shizs69@petrochina.com.cn;sunss69@petrochina.com.cn
CLC Number:
Zhensheng Shi, Shengxian Zhao, Qun Zhao, Shasha Sun, Tianqi Zhou, Feng Cheng, Shaojun Shi, Jin Wu. Fractures in cores from the Lower Paleozoic Wufeng-Longmaxi shale in southern Sichuan Basin and their implications for shale gas exploration[J]. Oil & Gas Geology, 2022, 43(5): 1087-1101.
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Table 2
Comparison of macro?fracture density of the Wufeng?Longmaxi shale with different burial depths in southern Sichuan Basin"
层位 | 阳105井(压力系数1.2) | 威202井(压力系数1.4) | 阳101H3-8井(压力系数1.9) | 泸206井(压力系数2.2) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
深度/m | 裂缝密度/ (条·m-1) | TOC/% | 深度/m | 裂缝密度/ (条·m-1) | TOC/% | 深度/m | 裂缝密度/ (条·m-1) | TOC/% | 深度/m | 裂缝密度/ (条·m-1) | TOC/% | |
龙二段 | 1 022.8~1 098.0 | 0.47 | 0.7 | — | — | — | — | — | — | — | — | — |
龙一2亚段 | 1 098.0~1 166.8 | 0.53 | 1.1 | 2 537.2~2 560.0 | 0.9 | 2.8 | 3 744.0~3 762.2 | 3.1 | 2.2 | 4 014.5~4 017.1 | 1.7 | 1.8 |
龙一1(4)小层 | 1 166.8~1 180.2 | 0.15 | 2.5 | 2 560.0~2 567.5 | 1.1 | 3.5 | 3 762.2~3 770.5 | 2.6 | 2.7 | 4 017.1~4 026.0 | 3.6 | 2.2 |
龙一1(3)小层 | 1 180.2~1 194.0 | 0.14 | 3.5 | 2 567.5~2 570.6 | 1.2 | 3.9 | 3 770.5~3 778.4 | 3.3 | 4.4 | 4 026.0~4 033.8 | 4.4 | 3.2 |
龙一1(2)小层 | 1 194.0~1 200.2 | 0.54 | 4.1 | 2 570.6~2 572.6 | 1.6 | 5.3 | 3 778.4~3 781.9 | 2.9 | 4.9 | 4 033.8~4 038.0 | 5.1 | 4.3 |
龙一1(1)小层 | 1 200.2~1 201.5 | 0.77 | 6.5 | 2 572.6~2 574.0 | 5.4 | 6.1 | 3 781.9~3 784.6 | 5.9 | 5.1 | 4 038.0~4 040.8 | 7.8 | 4.8 |
五峰组 | 1 201.5~1 202.6 | 1.82 | 4.5 | 2 574.0~2 581.9 | 1.3 | 2.0 | 3 784.6~3 792.6 | 1.1 | 2.4 | 4 040.8~4 051.8 | 3.2 | 2.2 |
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