石油与天然气地质 ›› 2022, Vol. 43 ›› Issue (5): 1259-1270.doi: 10.11743/ogg20220520
郭喜浩1(), 徐昉昊1(), 黄晓波2, 江涛2, 梁浩然1, 李长志1, 李智超1
收稿日期:
2021-09-24
修回日期:
2022-07-10
出版日期:
2022-10-01
发布日期:
2022-09-02
通讯作者:
徐昉昊
E-mail:419312387@qq.com;xufanghao17@cdut.edu.cn
第一作者简介:
郭喜浩(1997—),男,硕士研究生,油气藏地质学与成藏动力学。E?mail: 基金项目:
Xihao Guo1(), Fanghao Xu1(), Xiaobo Huang2, Tao Jiang2, Haoran Liang1, Changzhi Li1, Zhichao Li1
Received:
2021-09-24
Revised:
2022-07-10
Online:
2022-10-01
Published:
2022-09-02
Contact:
Fanghao Xu
E-mail:419312387@qq.com;xufanghao17@cdut.edu.cn
摘要:
多元统计分析可以综合考虑多个相关参数间的相互联系,在分类判别方面具有独特的优势,是多套烃源岩发育的复杂背景下油气源对比的有效方法。然而不同的多元统计方法在同一案例中的对比应用以及各自的适用性尚没有学者进行专门的研究分析。渤海湾盆地渤东凹陷发育多套烃源岩,不同构造的油气来源异常复杂,是利用多元统计分析进行油-源对比的最佳案例。综合对比主成分分析、Fisher线性判别分析以及Bayes线性判别分析的应用情况,发现主成分分析不能区分不同层位的烃源岩,因而不能用于渤东凹陷的油源对比,而Fisher和Bayes线性判别分析建立的模型可以区分不同层位的烃源岩,但都不能准确识别混源油。在Bayes判别模型得到的分类概率的基础上,通过优化Bayes判别模型的判别准则,建立了适用于渤东凹陷的油源判别模型,并识别出渤东凹陷存在4类油族,其中油族A、油族B、油族C分别来源于东营组三段(东三段)、沙一段-沙二段、沙三段烃源岩,而油族D为来源于东三段和沙一段-沙二段烃源岩的混源油。
中图分类号:
表1
渤东凹陷烃源岩生物标志化合物参数"
井号 | 深度/m | 层位 | Pr/Ph | ETR | 4-MSI | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
LD28-A | 2 920~2 930 | Ed3 | 1.88 | 0.26 | 0.03 | 0.11 | 0.14 | 2.48 | 1.87 | 1.25 | 0.01 | 0.07 |
LD28-A | 2 960~2 970 | Ed3 | 1.89 | 0.21 | 0.04 | 0.10 | 0.09 | 0.53 | 1.22 | 1.95 | 0.01 | 0.11 |
LD34-A | 2 850~2 860 | Ed3 | 1.50 | 0.11 | 0.10 | 0.06 | 0.04 | 0.31 | 0.77 | 3.61 | 0.01 | 0.31 |
PL14-A | 3 200~3 210 | Ed3 | 1.06 | 0.25 | 0.06 | 0.09 | 0.07 | 0.60 | 0.80 | 2.33 | 0.01 | 0.20 |
PL14-A | 3 400~3 410 | Ed3 | 1.02 | 0.11 | 0.07 | 0.10 | 0.07 | 0.45 | 0.86 | 2.64 | 0.01 | 0.19 |
PL14-A | 3 600~3 610 | Ed3 | 0.84 | 0.12 | 0.09 | 0.12 | 0.12 | 0.55 | 1.01 | 2.03 | 0.02 | 0.24 |
PL14-A | 3 700~3 715 | Ed3 | 0.97 | 0.15 | 0.11 | 0.12 | 0.19 | 0.49 | 1.13 | 2.63 | 0.03 | 0.29 |
PL14-B | 2 740~2 760 | Ed3 | 1.62 | 0.11 | 0.07 | 0.11 | 0.07 | 0.53 | 0.89 | 2.51 | 0.01 | 0.20 |
PL14-B | 2 760~2 780 | Ed3 | 1.45 | 0.11 | 0.08 | 0.12 | 0.06 | 0.63 | 0.97 | 2.89 | 0.01 | 0.21 |
LD28-A | 3 000~3 010 | Es1-2 | 1.34 | 0.32 | 0.07 | 0.13 | 0.40 | 0.38 | 0.99 | 1.80 | 0.07 | 0.19 |
LD34-A | 2 930~2 940 | Es1-2 | 0.57 | 0.44 | 0.33 | 0.12 | 0.22 | 0.07 | 0.69 | 7.30 | 0.05 | 1.20 |
LD34-C | 2 030~2 040 | Es1-2 | 1.25 | 0.41 | 0.31 | 0.16 | 0.23 | 0.17 | 1.03 | 15.96 | 0.04 | 1.81 |
LD34-C | 2 080~2 090 | Es1-2 | 1.31 | 0.41 | 0.29 | 0.17 | 0.41 | 0.20 | 0.88 | 10.97 | 0.09 | 1.46 |
LD34-C | 2 110~2 120 | Es1-2 | 0.99 | 0.59 | 0.33 | 0.14 | 0.44 | 0.11 | 0.89 | 11.69 | 0.08 | 0.95 |
LD34-C | 2 140~2 150 | Es1-2 | 0.47 | 0.37 | 0.21 | 0.16 | 0.59 | 0.33 | 1.42 | 4.56 | 0.09 | 0.44 |
LK8-A | 2 670~2 680 | Es1-2 | 0.52 | 0.56 | 0.23 | 0.18 | 1.08 | 0.10 | 0.88 | 2.71 | 0.19 | 0.78 |
LK9-A | 2 170~2 180 | Es1-2 | 1.73 | 0.17 | 0.06 | 0.16 | 0.08 | 0.07 | 1.00 | 5.07 | 0.01 | 0.19 |
LK9-A | 2 240~2 250 | Es1-2 | 0.94 | 0.59 | 0.25 | 0.15 | 0.65 | 0.09 | 0.71 | 5.39 | 0.14 | 0.83 |
PL3-A | 2 410~2 420 | Es1-2 | 1.62 | 0.11 | 0.12 | 0.08 | 0.06 | 0.48 | 1.02 | 5.13 | 0.01 | 0.26 |
PL3-A | 2 460~2 470 | Es1-2 | 1.43 | 0.12 | 0.14 | 0.11 | 0.06 | 0.32 | 0.91 | 4.66 | 0.01 | 0.38 |
PL9-A | 2 630~2 640 | Es1-2 | 2.19 | 0.16 | 0.10 | 0.11 | 0.03 | 0.33 | 1.06 | 7.38 | 0.01 | 0.26 |
PL14-A | 3 815~3 825 | Es1-2 | 1.23 | 0.28 | 0.09 | 0.09 | 0.34 | 0.35 | 1.18 | 2.52 | 0.06 | 0.26 |
PL14-A | 3 888~3 891 | Es1-2 | 1.04 | 0.12 | 0.08 | 0.09 | 0.09 | 0.53 | 0.94 | 2.47 | 0.02 | 0.20 |
PL14-A | 2 840~2 860 | Es1-2 | 0.96 | 0.15 | 0.12 | 0.15 | 0.13 | 0.28 | 0.96 | 3.68 | 0.03 | 0.35 |
LD34-B | 2 200~2 210 | Es3 | 1.52 | 0.45 | 0.21 | 0.17 | 0.33 | 0.15 | 0.96 | 7.23 | 0.06 | 0.53 |
LD34-B | 2 250~2 260 | Es3 | 1.71 | 0.48 | 0.21 | 0.23 | 0.37 | 0.30 | 1.11 | 6.43 | 0.06 | 0.55 |
LD34-B | 2 350~2 360 | Es3 | 1.30 | 0.39 | 0.12 | 0.14 | 0.25 | 0.31 | 0.87 | 4.39 | 0.04 | 0.22 |
LD34-B | 2 370~2 380 | Es3 | 1.39 | 0.34 | 0.17 | 0.15 | 0.29 | 0.13 | 0.87 | 5.54 | 0.06 | 0.34 |
LD34-C | 2 180~2 190 | Es3 | 0.70 | 0.48 | 0.21 | 0.18 | 1.00 | 0.15 | 0.76 | 2.98 | 0.26 | 0.50 |
LD34-C | 2 200~2 210 | Es3 | 1.59 | 0.22 | 0.16 | 0.09 | 1.25 | 0.16 | 0.81 | 1.91 | 0.34 | 0.42 |
PL9-A | 2 830~2 840 | Es3 | 0.61 | 0.51 | 0.18 | 0.17 | 0.48 | 0.08 | 0.81 | 2.74 | 0.13 | 0.61 |
PL25-A | 1 653~1 656 | Es3 | 0.21 | 0.56 | 0.14 | 0.19 | 1.02 | 0.27 | 0.42 | 1.27 | 0.20 | 0.29 |
PL25-A | 1 887~1 890 | Es3 | 0.23 | 0.61 | 0.13 | 0.28 | 1.20 | 0.03 | 0.50 | 1.28 | 0.26 | 0.30 |
PL25-A | 1 974~1 977 | Es3 | 0.27 | 0.59 | 0.11 | 0.14 | 0.73 | 0.02 | 0.44 | 1.47 | 0.16 | 0.35 |
表3
渤东凹陷烃源岩样品Fisher判别模型与Bayes判别模型的判别结果"
井号 | 深度/m | 层位 | Fisher判别分析 | Bayes判别分析 | 油族 | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F1 | F2 | 分类 | Y1 | Y2 | Y3 | 概率1 | 概率2 | 概率3 | 分类 | ||||
LD28-A | 2 530 | Ng | 2.22 | 0.28 | 3 | 29.87 | 35.37 | 38.27 | 0 | 0.05 | 0.95 | 3 | C |
LD32-A | 2 388 | Ng | -0.28 | -0.89 | 1 | 12.42 | 12.57 | 10.35 | 0.42 | 0.52 | 0.06 | 2 | D |
LD32-A | 2 662 | Ng | 0.90 | -1.17 | 3 | 15.06 | 16.40 | 17.69 | 0.05 | 0.20 | 0.75 | 3 | C |
LD32-A | 2 745 | Ng | 1.74 | -0.80 | 3 | 17.64 | 20.81 | 23.84 | 0 | 0.04 | 0.95 | 3 | C |
LD32-A | 2 917 | Ed2U-Ed1 | 1.59 | -0.49 | 3 | 16.11 | 19.60 | 21.81 | 0 | 0.10 | 0.90 | 3 | C |
LD32-B | 2 792 | Ed2U-Ed1 | -1.70 | -1.37 | 1 | 15.30 | 12.53 | 7.20 | 0.94 | 0.06 | 0 | 1 | A |
LD32-B | 2 909 | Ed2U-Ed1 | -0.33 | -1.68 | 1 | 21.33 | 19.96 | 18.67 | 0.74 | 0.21 | 0.06 | 1 | A |
LD34-A | 2 417 | Ed2U-Ed1 | -0.55 | -0.99 | 1 | 11.18 | 10.72 | 7.93 | 0.58 | 0.40 | 0.02 | 1 | D |
LD34-A | 2 634 | Ed3-Ed2L | -2.55 | 1.16 | 2 | 10.42 | 10.67 | -0.23 | 0.36 | 0.64 | 0 | 2 | D |
LD34-B | 1 971 | Ed2U-Ed1 | 5.04 | -1.88 | 3 | 41.93 | 47.88 | 61.10 | 0 | 0 | 1.00 | 3 | C |
LD34-B | 2 142 | Ed3-Ed2L | 3.94 | 0.57 | 3 | 28.29 | 36.74 | 43.83 | 0 | 0 | 1.00 | 3 | C |
LD34-B | 2 364 | Es3 | 1.43 | -0.21 | 3 | 20.08 | 23.75 | 25.18 | 0 | 0.19 | 0.81 | 3 | C |
LD34-C | 2 131 | Es1-2 | -0.40 | -0.63 | 2 | 15.31 | 15.67 | 12.82 | 0.36 | 0.60 | 0.04 | 2 | D |
LD34-C | 2 150 | Es1-2 | -0.45 | -0.40 | 2 | 14.32 | 15.02 | 11.74 | 0.29 | 0.68 | 0.03 | 2 | D |
LK8-A | 1 845 | Ng | -1.51 | -1.26 | 1 | 10.94 | 8.64 | 3.66 | 0.90 | 0.10 | 0 | 1 | A |
LK8-A | 1 963 | Ng | -2.59 | -1.46 | 1 | 5.80 | 1.62 | -5.97 | 0.98 | 0.02 | 0 | 1 | A |
LK8-A | 1 963 | Ng | -2.46 | -2.12 | 1 | 7.57 | 2.39 | -4.00 | 0.99 | 0.01 | 0 | 1 | A |
LK9-A | 1 292 | NmL | -1.83 | -0.87 | 1 | 7.32 | 5.26 | -1.08 | 0.88 | 0.12 | 0 | 1 | A |
LK9-A | 1 293~1 309 | NmL | -2.57 | -0.94 | 1 | 7.32 | 5.26 | -1.08 | 0.88 | 0.12 | 0 | 1 | A |
LK9-A | 1 308 | NmL | -2.93 | -1.04 | 1 | 4.94 | 0.99 | -8.05 | 0.98 | 0.02 | 0 | 1 | A |
LK9-A | 1 515 | Ng | -3.27 | -0.46 | 1 | 13.14 | 9.74 | -0.97 | 0.97 | 0.03 | 0 | 1 | A |
LK9-A | 2 211 | Es1-2 | 4.51 | 1.21 | 3 | 30.85 | 41.02 | 48.76 | 0 | 0 | 1.00 | 3 | C |
LK9-B | 1 773 | Ed2 | -1.97 | 3.00 | 2 | 12.16 | 16.62 | 4.85 | 0.01 | 0.99 | 0 | 2 | B |
PL3-A | 1 709 | Ng | -1.11 | 0.38 | 2 | 11.62 | 12.68 | 6.61 | 0.22 | 0.78 | 0 | 2 | B |
PL3-A | 2 234 | Ed2U-Ed1 | -0.56 | 0.60 | 2 | 16.44 | 18.64 | 13.73 | 0.08 | 0.91 | 0.01 | 2 | B |
PL3-A | 2 256 | Ed2U-Ed1 | -1.21 | 0.72 | 2 | 17.07 | 18.63 | 11.85 | 0.15 | 0.85 | 0 | 2 | B |
PL9-A | 2 455 | Ed2U-Ed1 | -1.82 | -0.58 | 1 | 13.52 | 11.92 | 5.24 | 0.81 | 0.19 | 0 | 1 | A |
PL9-B | 1 675~1 700 | Ng | -3.53 | -0.46 | 1 | 7.92 | 4.10 | -7.29 | 0.98 | 0.02 | 0 | 1 | A |
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