Formation Water Evolution and Hydrocarbon Accumulation Model of Shahejie Formation in Wenliu Area, Northern Dongpu Depression
-
摘要: 东濮凹陷北部沙河街组盐岩发育，流体特征受其影响明显，但目前对盐岩发育区的流体特征及其演化过程研究还十分薄弱.以文留地区沙河街组三段、四段为研究对象，采集砂岩储层内流体包裹体样品，对其进行镜下观察、显微测温和激光拉曼分析.结果表明，研究区有3期油气成藏，主要成藏时间为0~8Ma和22~30 Ma.地层水在24~30 Ma呈现局部淡化趋势，24 Ma至今矿化度又逐渐升高.地层水淡化期、油气成藏高峰期、地层压力泄压期三者呈现出高度耦合，并据此建立了流体运移模式.地层水矿化度值的演变反映其运移过程，同时也指示了伴随地层水运移的油气运聚方向.淡化地层水有助于次生孔隙的生成，改善储层物性，而过饱和流体则可能会对储层产生不利影响.Abstract: In the northern part of Dongpu Depression, the salt rock is developed in Shahejie Formation, and the fluid characteristics are obviously affected by the salt rock. However, the study of fluid characteristics and evolution process in salt rocks is still very weak. In this paper, fluid inclusion samples collected in Es3 and Es4 sandstone reservoirs in Wenliu area were observed under microscope, and analyzed by homogenization temperature test and laser Raman test. The results show that there are three stages of hydrocarbon accumulation in the study area, and the main accumulation time is 0-8 Ma and 22-30 Ma. The formation water shows a partial desalting trend from 24 Ma to 30 Ma, and the salinity gradually increased from 24 Ma to this day. The formation water desalting period, oil and gas accumulation peak period and formation pressure relief period are highly coupled, and the fluid migration model is established accordingly. The evolution of formation water salinity reflects its migration process, and also indicates the direction of hydrocarbon migration and accumulation accompanying formation water migration. Desalting formation water contributes to the generation of secondary pores and improves reservoir properties, while supersaturated fluids may adversely affect the reservoir.
-
图 1 东濮凹陷北部地区区域地质图（修改自蒋有录等，2015）
Fig. 1. Regional geological map of the northern Dongpu Depression (modified from Jiang et al., 2015)
图 2 文留地区沙河街组砂岩样品岩性图（a）和沙三段砂岩孔隙度分布（b、c）
Fig. 2. Sandstone sample lithology (a) and porosity distribution (b, c) of Shahejie Formation in Wenliu area
图 3 镜下岩相学特征
Q.石英；cal.方解石；Mi.云母；pl.长石. a.文109井2 814 m砂岩单偏光；b.文109井2 814 m砂岩正交光；c.文96井2 543 m正交光下云母板片压弯；d.文260井3 575 m砂岩单偏光；e.文260井3 575 m砂岩正交光；f.文204井3 256 m石英加大
Fig. 3. Microscopic petrographic characteristics
图 4 镜下包裹体特征
Q.石英. a.文109井2 814 m线状排列包裹体；b.文109井2 814 m CO2包裹体；c.文109井2 886 m气液两相盐水包裹体；d.文109井2 886 m纯液相包裹体；e.卫325井3 414 m烃包裹体单偏光；f.卫325井3 414 m蓝色‒黄绿色荧光；g.胡19井1 842 m烃包裹体单偏光；h.胡19井1 842 m烃包裹体黄色荧光；i.文204井3 319 m团簇状蓝白色荧光烃包裹体
Fig. 4. Microscopic characteristics of inclusions
图 8 东濮凹陷沙河街组现今地层水矿化度平面图
Fig. 8. Plan of present formation water salinity of Shahejie Formation in Dongpu Depression
图 9 文204井、文260井埋藏史与热演化史‒成藏期次图
Fig. 9. Accumulation period-burial history and thermal evolution history of Wen 204 and Wen 260 wells
图 11 流体运移模式
图a、b为压实排水和生烃过程；图c为烃源岩裂缝形成与流体向储层转移过程；图d为断层形成与储层流体向其他层位运移
Fig. 11. Fluid migration patterns
图 12 文204井Es3中9段孔隙度剖面
标星处为文204井流体包裹体样品采样点
Fig. 12. Porosity evolution profile of the middle ninth member of Es3 in Wen 204
表 1 现今地层水水化学特征
Table 1. Hydrochemical characteristics of underground water
井号 顶界深度(m) 底界深度(m) 层位 K++Na+(g/L) Ca2+(g/L) Mg2+(g/L) Cl‒(g/L) SO4‒(g/L) HCO3‒(g/L) 总矿化度(g/L) 水型 钠氯系数 盐化系数 脱硫系数 文204 3 402 3 487 Es3中 86.86 30.04 2.14 192.00 3.32 0.25 315.09 CaCl2 0.70 764.91 1.26 文109 2 746 2 770 Es4 83.14 0.68 0.25 126.30 4.67 0.93 215.92 Na2SO4 1.02 135.62 2.66 2 998 2 999 Es4 / 10.98 1.65 182.70 7.33 0.29 301.50 CaCl2 / 632.11 2.88 3 035 3 038 Es4 106.20 11.67 1.24 186.30 2.39 0.32 308.02 CaCl2 0.88 582.07 0.94 文260 4 263 4 275 Es3下 86.88 31.10 2.38 168.90 36.90 0.23 326.38 CaCl2 0.79 740.79 13.91 3 995 4 029 Es3下 82.78 41.56 2.62 208.80 0.55 0.19 336.44 CaCl2 0.61 1 081.61 0.19 注：现今地层水水化学数据测试单位为中原油田，测试精度±0.001 g/L. 
下载: 导出CSV
-
Fan, C. Y., Braathen, A., Wang, Z. L., et al., 2019. Flow Pathway and Evolution of Water and Oil along Reverse Faults in the Northwestern Sichuan Basin, China. AAPG Bulletin, 103(5): 1153-1177. https://doi.org/10.1306/10261816501 George, S. C., Lisk, M., Eadington, P. J., 2004. Fluid Inclusion Evidence for an Early, Marine-Sourced Oil Charge Prior to Gas-Condensate Migration, Bayu-1, Timor Sea, Australia. Marine and Petroleum Geology, 21(9): 1107-1128. https://doi.org/10.1016/j.marpetgeo.2004.07.001 George, S. C., Ruble, T. E., Dutkiewicz, A., et al., 2001. Assessing the Maturity of Oil Trapped in Fluid Inclusions Using Molecular Geochemistry Data and Visually-Determined Fluorescence Colours. Applied Geochemistry, 16(4): 451-473. https://doi.org/10.1016/S0883-2927(00)00051-2 Goldstein, R. H., 2001. Fluid Inclusions in Sedimentary and Diagenetic Systems. Lithos, 55(1-4): 159-193. https://doi.org/10.1016/S0024-4937(00)00044-X Goldstein, R. H., Reynolds, T. J., 1994. Systematics of Fluid Inclusions in Diagenetic Minerals. Society for Sedimentary Geology Short Course, 31: 199. Hall, D. L., Sterner, S. M., Bodnar, R. J., 1988. Freezing Point Depression of NaCl-KCl-H2O Solutions. Economic Geology, 83(1): 197-202. https://doi.org/10.2113/gsecongeo.83.1.197 Huang, C. Y., Zhang, J. C., Wang, H., et al., 2015. Lacustrine Shale Deposition and Variable Tectonic Accommodation in the Rift Basins of the Bohai Bay Basin in Eastern China. Journal of Earth Science, 26(5): 700-711. https://doi.org/10.1007/s12583-015-0602-3 Ji, S. D., Wang, X. J., Liu, Y. H., et al., 2013. Reservoir Water Features and Their Petroleum Geology Significance of Huzhuangji-Qingzuji Oilfield, Dongpu Depression. Petroleum Geology and Recovery Efficiency, 20(5): 43-47, 113 (in Chinese with English abstract). doi: 10.3969/j.issn.1009-9603.2013.05.010 Jiang, Y. L., Fang, L., Liu, J. D., et al., 2016. Hydrocarbon Charge History of the Paleogene Reservoir in the Northern Dongpu Depression, Bohai Bay Basin, China. Petroleum Science, 13(4): 625-641. https://doi.org/10.1007/s12182-016-0130-5 Jiang, Y. L., Fang, L., Tan, Y. M., et al., 2015. Differences and Main Controlling Factors of Accumulation Periods in Dongpu Sag, Bohai Bay Basin. Geological Review, 61(6): 1321-1331 (in Chinese with English abstract). Jiao, D. Q., Li, M., Mu, X. S., et al., 2014. Evolution of Paleo-Hydrodynamics and Hydrocarbon Migration and Accumulation in Southern Dongpu Sag, Bohai Bay Basin. Oil & Gas Geology, 35(5): 585-594 (in Chinese with English abstract). Li, H., Wang, B. H., Lu, J. L., et al., 2021. Geological Characteristics and Exploration Prospects of Paleogene Continental Shale Oil Accumulation in Dongpu Sag, Bohai Bay Basin. Journal of China University of Petroleum (Edition of Natural Science), 45(3): 33-41 (in Chinese with English abstract). doi: 10.3969/j.issn.1673-5005.2021.03.004 Li, Z., Li, H. S., 1994. An Approach to Genesis and Evolution of Secondary Porosity in Deeply Buried Sandstone Reservoirs, Dongpu Depression. Chinese Journal of Geology (Scientia Geologica Sinica), 29(3): 267-275 (in Chinese with English abstract). Lin, H. M., Cheng, F. Q., Wang, Y. S., et al., 2017. Fluid Inclusion Evidence of Multi-Stage Oil and Gas Filling in the Fourth Member of Shahejie Formation in Bonan Depression, Bohai Bay Basin. Oil & Gas Geology, 38(2): 209-218 (in Chinese with English abstract). Liu, B., Shen, K., 1999. Thermodynamics of Fluid Inclusions. Geological Publishing House, Beijing (in Chinese). Liu, J. D., Jiang, Y. L., Tan, Y. M., et al., 2014. Relationship between Gypsum-Salt Rock and Oil-Gas in Dongpu Depression of Bohai Gulf Basin. Acta Sedimentologica Sinica, 32(1): 126-137 (in Chinese with English abstract). Liu, W. B., Zhang, S. Q., Xu, X. Y., et al., 2019. Fracturing and Its Influence on the Compact Sandstone Reservoir in the Third Member of the Shahejie Formation in the Northern Dongpu Depression. Geotectonica et Metallogenia, 43(1): 58-68 (in Chinese with English abstract). Liu, W. B., Zhou, X. G., Xu, X. Y., et al., 2020a. Formation of Inter-Salt Overpressure Fractures and Their Significances to Shale Oil and Gas: A Case Study of the Third Member of Paleogene Shahejie Formation in Dongpu Sag, Bohai Bay Basin. Petroleum Exploration and Development, 47(3): 560-571. https://doi.org/10.1016/S1876-3804(20)60073-8 Liu, X. Y., Chen, H. H., Xiao, X. W., et al., 2020b. Mixing Characteristics of Oil Inclusions with Different Thermal Maturities in the Wenliu Uplift, Dongpu Depression, Bohai Bay Basin, North China. Journal of Earth Science, 31(6): 1251-1258. https://doi.org/10.1007/s12583-020-1356-0 Liu, X. Y., Chen, H. H., Xiao, X. W., et al., 2022. Overpressure Evolution Recorded in Fluid Inclusions in the Dongpu Depression, Bohai Bay Basin, North China. Journal of Earth Science, 33(4): 916-932. https://doi.org/10.1007/s12583-020-1375-x Liu, X. Y., Chen, H. H., Zhang, H. A., et al., 2020. Characteristics of Oil Reservoiring and Its Relationship with Pressure Evolution of Shahejie Formation in Pucheng Area. Earth Science, 45(6): 2210-2220 (in Chinese with English abstract). Lou, Z. H., Zhu, R., Jin, A. M., et al., 2009. Relationship between Groundwater and Hydrocarbon Accumulation-Preservation in Sedimentary Basin. Acta Geologica Sinica, 83(8): 1188-1194 (in Chinese with English abstract). doi: 10.3321/j.issn:0001-5717.2009.08.017 Lu, H. Z., 2004. Fluid Inclusion. Science Press, Beijing (in Chinese). Lu, K., Zuo, Y. H., Mei, B., et al., 2013. Paleo-Sedimentary Environments in the Dongpu Depression and Their Impact on Organic Matter Abundance. Geology and Exploration, 49(3): 589-594 (in Chinese with English abstract). Ma, Y. S., Lou, Z. H., Guo, T. L., et al., 2006. An Exploration on a Technological System of Petroleum Preservation Evaluation for Marine Strata in South China. Acta Geologica Sinica, 80(3): 406-417 (in Chinese with English abstract). doi: 10.3321/j.issn:0001-5717.2006.03.013 Mernagh, T. P., Wilde, A. R., 1989. The Use of the Laser Raman Microprobe for the Determination of Salinity in Fluid Inclusions. Geochimica et Cosmochimica Acta, 53(4): 765-771. https://doi.org/10.1016/0016-7037(89)90022-7 Mozafari, M., Swennen, R., Muchez, P., et al., 2017. Origin of the Saline Paleofluids in Fault-Damage Zones of the Jabal Qusaybah Anticline (Adam Foothills, Oman): Constraints from Fluid Inclusions Geochemistry. Marine and Petroleum Geology, 86: 537-546. https://doi.org/10.1016/j.marpetgeo.2017.06.010 Munz, I. A., 2001. Petroleum Inclusions in Sedimentary Basins: Systematics, Analytical Methods and Applications. Lithos, 55(1-4): 195-212. https://doi.org/10.1016/S0024-4937(00)00045-1 Nomura, S. F., Sawakuchi, A. O., Bello, R. M. S., et al., 2014. Paleotemperatures and Paleofluids Recorded in Fluid Inclusions from Calcite Veins from the Northern Flank of the Ponta Grossa Dyke Swarm: Implications for Hydrocarbon Generation and Migration in the Paraná Basin. Marine and Petroleum Geology, 52: 107-124. https://doi.org/10.1016/j.marpetgeo.2014.01.010 Qiu, Y., Zhang, R. Q., Chou, I. M., et al., 2021. Boron-Rich Ore-Forming Fluids in Hydrothermal W-Sn Deposits from South China: Insights from in Situ Raman Spectroscopic Characterization of Fluid Inclusions. Ore Geology Reviews, 132: 104048. https://doi.org/10.1016/j.oregeorev.2021.104048 Shi, J. X., Li, B. C., Cao, J. C., 1985. Studies of Pure Liquid Inclusions and Synthetic Equivalents. Acta Mineralogica Sinica, 5(1): 15-22, 99 (in Chinese with English abstract). doi: 10.3321/j.issn:1000-4734.1985.01.004 Song, H. Y., Ji, Y. L., Zhou, Y., 2021. Reservoir Characteristics and Diagenetic Evolution Sequence of the Middle Third Member of Shahejie Formation in Dongpu Depression. Sino-Global Energy, 26(2): 27-34 (in Chinese with English abstract). Tong, X., Ma, P. J., Zhang, S. Q., et al., 2015. Formation Water Characteristics and Diagenetic Response of the Third Member of Shahejie Formation in Wendong Area of Dongpu Depression. Fault-Block Oil & Gas Field, 22(5): 594-599 (in Chinese with English abstract). Wang, J., Lou, Z. H., Zhu, R., et al., 2014. Hydrochemistry of Paleogene Formation Water and Its Relationship with Hydrocarbon Migration and Accumulation in Wenliu Region in Dongpu Sag, Bohai Bay Basin. Oil & Gas Geology, 35(4): 449-455 (in Chinese with English abstract). Wang, J. P., Huang, Z. G., Zhang, Y. X., et al., 2018. Lithologic Characteristics and Macroscopic Distribution Law of High-Quality Source Rocks in Dongpu Sag. Fault-Block Oil & Gas Field, 25(5): 549-554 (in Chinese with English abstract). Wang, M. A., Chen, Y., Bain, W. M., et al., 2020. Direct Evidence for Fluid Overpressure during Hydrocarbon Generation and Expulsion from Organic-Rich Shales. Geology, 48(4): 374-378. https://doi.org/10.1130/g46650.1 Xu, T. W., Zhang, H. A., Li, J. D., et al., 2019. Characters of Hydrocarbon Generation and Accumulation of Salt-Lake Facies in Dongpu Sag, Bohai Bay Basin. Oil & Gas Geology, 40(2): 248-261 (in Chinese with English abstract). Yang, L. L., Xu, T. F., Wei, M. C., et al., 2015. Dissolution of Arkose in Dilute Acetic Acid Solution under Conditions Relevant to Burial Diagenesis. Applied Geochemistry, 54: 65-73. https://doi.org/10.1016/j.apgeochem.2015.01.007 Yousef, I., Morozov, V., Sudakov, V., et al., 2022. Microfracture Characterization in Sandstone Reservoirs: A Case Study from the Upper Triassic of Syria's Euphrates Graben. Journal of Earth Science, 33(4): 901-915. https://doi.org/10.1007/s12583-021-1488-x Zhao, Z. Y., Zhou, Y. Q., Ma, X. M., et al., 2007. The Impact of Saline Deposit Upon the Hydrocarbon Accumulation in Petroliferous Basin. Oil & Gas Geology, 28(2): 299-308 (in Chinese with English abstract). Zhu, R. W., Jiang, Y. l., Liu, J. D., et al., 2015. Paleo-Pressure Restoration and Dynamic Mechanism for Hydrocarbon Migration and Accumulation of Es3 Member in North Dongpu Sag. Journal of Geomechanics, 21(4): 492-501 (in Chinese with English abstract). doi: 10.3969/j.issn.1006-6616.2015.04.005 Zuo, Y. H., Tang, S. L., Zhang, W., et al., 2017. Cenozoic Thermal History of the Dongpu Sag, Bohai Bay Basin. Earth Science Frontiers, 24(3): 149-156 (in Chinese with English abstract). 计曙东, 王学军, 刘玉华, 等, 2013. 东濮凹陷胡状集‒庆祖集油田地层水特征及其石油地质意义. 油气地质与采收率, 20(5): 43-47, 113. 蒋有录, 房磊, 谈玉明, 等, 2015. 渤海湾盆地东濮凹陷不同区带油气成藏期差异性及主控因素. 地质论评, 61(6): 1321-1331. 焦大庆, 李梅, 慕小水, 等, 2014. 渤海湾盆地东濮凹陷南部地区古水动力演化与油气运聚. 石油与天然气地质, 35(5): 585-594. 李浩, 王保华, 陆建林, 等, 2021. 东濮凹陷古近系页岩油富集地质条件与勘探前景. 中国石油大学学报(自然科学版), 45(3): 33-41. doi: 10.3969/j.issn.1673-5005.2021.03.004 李忠, 李蕙生, 1994. 东濮凹陷深部次生孔隙成因与储层演化研究. 地质科学, 29(3): 267-275. 林红梅, 程付启, 王永诗, 等, 2017. 渤海湾盆地渤南洼陷沙四段油气多期充注的流体包裹体证据. 石油与天然气地质, 38(2): 209-218. 刘斌, 沈昆, 1999. 流体包裹体热力学. 北京: 地质出版社. 刘景东, 蒋有录, 谈玉明, 等, 2014. 渤海湾盆地东濮凹陷膏盐岩与油气的关系. 沉积学报, 32(1): 126-137. 刘卫彬, 张世奇, 徐兴友, 等, 2019. 东濮凹陷沙三段致密砂岩储层裂缝形成机制及对储层物性的影响. 大地构造与成矿学, 43(1): 58-68. 刘秀岩, 陈红汉, 张洪安, 等, 2020. 多套烃源岩联合供烃下的原油成藏特征及其与压力的耦合关系: 以东濮凹陷濮城地区沙河街组为例. 地球科学, 45(6): 2210-2220. doi: 10.3799/dqkx.2019.222 楼章华, 朱蓉, 金爱民, 等, 2009. 沉积盆地地下水与油气成藏‒保存关系. 地质学报, 83(8): 1188-1194. 卢焕章, 2004. 流体包裹体. 北京: 科学出版社. 鹿坤, 左银辉, 梅冰, 等, 2013. 东濮凹陷古沉积环境及其对有机质丰度的影响. 地质与勘探, 49(3): 589-594. 马永生, 楼章华, 郭彤楼, 等, 2006. 中国南方海相地层油气保存条件综合评价技术体系探讨. 地质学报, 80(3): 406-417. 施继锡, 李本超, 曹俊臣, 1985. 矿物中纯液体包裹体和人工合成纯液体包裹体的研究. 矿物学报, 5(1): 15-22, 99. 宋虹玉, 纪友亮, 周勇, 2021. 东濮凹陷沙三中亚段储层特征及成岩演化序列. 中外能源, 26(2): 27-34. 佟昕, 马鹏杰, 张世奇, 等, 2015. 东濮凹陷文东地区沙三段地层水特征及成岩响应. 断块油气田, 22(5): 594-599. 王君, 楼章华, 朱蓉, 等, 2014. 渤海湾盆地东濮凹陷文留地区现今地层水化学与油气运聚. 石油与天然气地质, 35(4): 449-455. 王金萍, 黄泽贵, 张云献, 等, 2018. 东濮凹陷优质烃源岩的岩性特征及宏观展布规律. 断块油气田, 25(5): 549-554. 徐田武, 张洪安, 李继东, 等, 2019. 渤海湾盆地东濮凹陷盐湖相成烃成藏特征. 石油与天然气地质, 40(2): 248-261. 赵振宇, 周瑶琪, 马晓鸣, 等, 2007. 含油气盆地中膏盐岩层对油气成藏的重要影响. 石油与天然气地质, 28(2): 299-308. 朱荣伟, 蒋有录, 刘景东, 等, 2015. 东濮凹陷北部沙三段古压力恢复及油气运聚动力构成. 地质力学学报, 21(4): 492-501. 左银辉, 唐世林, 张旺, 等, 2017. 东濮凹陷新生代构造‒热历史研究. 地学前缘, 24(3): 149-156. -
点击查看大图
图(12) / 表(1)
计量
- 文章访问数: 538
- HTML全文浏览量: 853
- PDF下载量: 56
- 被引次数: 0
