基于孔隙成因的泥页岩总孔隙度恢复方法研究——以渤海湾盆地东营凹陷沙三下亚段为例

王保华; 陆建林; 李浩; 宋振响; 左宗鑫

doi:10.11781/sysydz201705724

基于孔隙成因的泥页岩总孔隙度恢复方法研究——以渤海湾盆地东营凹陷沙三下亚段为例

doi: 10.11781/sysydz201705724

中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126

基金项目: 中国石化科技部项目“东部断陷盆地页岩油富集主控因素及选区评价”（P15094）资助。

详细信息

作者简介:
王保华(1981—),男,硕士,高级工程师,从事油气资源评价工作.E-mail:wangbh.syky@sinopec.com.

中图分类号: TE122.2
计量
- 文章访问数: 837
- HTML全文浏览量: 54
- PDF下载量: 211
- 被引次数: 0
出版历程
- 收稿日期: 2017-04-05
- 修回日期: 2017-07-21
- 刊出日期: 2017-09-28

Recovery method for total porosity of shale based on porosity origin: A case study of the lower part of the third member of Shahejie Formation in the Dongying Sag, Bohai Bay Basin

Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China

摘要

摘要: 泥页岩中具有多种类型孔隙，为页岩油气富集提供了重要的储渗空间。恢复泥页岩孔隙演化史，是页岩油气资源评价与区带优选的关键，同时也是开展烃源岩排烃过程研究的重要基础。泥页岩中压实作用减孔、生烃作用增孔以及构造作用造缝是泥页岩孔隙形成的重要机制。基于这3种成孔机制，采用泥岩压实模型计算不同深度泥页岩孔隙度减少量，结合泥页岩的镜质体反射率、有机碳含量以及物性等实测数据，建立了地史演化过程中泥页岩有机质孔与有机碳变化量（ΔC）的数学模型；在拟合不同成因孔隙类型演化趋势模型的基础上，综合构造、岩相、成岩以及应力场特征，建立基于孔隙成因的多类型泥页岩孔隙恢复方法。应用该方法恢复了渤海湾盆地东营凹陷沙三下亚段3种成因类型孔隙的演化趋势，并预测了不同成因类型孔隙的空间展布，进而确定了其泥页岩总孔隙度的分布。预测结果与实钻资料较吻合，可靠性较好。
- 页岩油气 /
- 泥页岩 /
- 孔隙度恢复 /
- 生烃孔隙度 /
- 孔隙演化
Abstract: There are many types of pores in shale, which provide an important permeable-storage space for oil and gas enrichment. The restoration of shale pore evolution is the key to the evaluation of shale oil and gas resources and the optimization of zone, and it is also an important basis for the study of hydrocarbon expulsion process. The compaction of mud shale which reduces pore, hydrocarbon generation which forms pore, and tectonic effect which forms fracture are important mechanisms of shale pore generation. Based on these three kinds of pore forming mechanisms, a mudstone compaction model was used to calculate the porosity change of shale at different depths. The relationship between organic pore and organic carbon content during geologic evolution was modeled according to the measured data such as vitrinite reflectance, organic carbon content and physical properties of shale. After modeling the evolutionary trend of different pore types, a the multi-type shale pore recovery method based on pore formation was established based on comprehensive tectonics, facies, diagenesis and stress field characteristics. The evolution of three pore types in the lower part of the third member of Shahejie Formation in the Dongying Sag was restored by this method, and the spatial distribution of pores of different genetic types was predicted. The distribution of the total porosity of shale was determined. The forecast results are in good agreement with the real drilling data.
- shale oil and gas /
- shale /
- porosity recovery /
- hydrocarbon generation porosity /
- porosity evolution

HTML全文

参考文献(16)

[1]	黄潇,张金川,李晓光,等.陆相页岩孔隙类型、特征及油气共聚过程探讨：以辽河坳陷西部凹陷为例[J].天然气地球科学,2015,26(7):1422-1432. Huang Xiao,Zhang Jinchuan,Li Xiaoguang,et al.Pore types and characteristics of continental shale and discussion on the process of oil and gas accumulation:A case study of the western sag of Liaohe Depression[J].Natural Gas Geoscience,2015,26(7):1422-1432.
[2]	王书彦,胡润,任东超,等.页岩孔隙成因类型及其演化发育机理：以川东南地区页岩为例[J].山东科技大学学报(自然科学版),2015,34(6):9-15. Wang Shuyan,Hu Run,Ren Dongchao,et al.Genetic types and development mechanism of shale pores:With the example of shale in Southeast Sichuan[J].Journal of Shandong University of Science and Technology,2015,34(6):9-15.
[3]	Loucks R G,Reed R M,Ruppel S C,et a1.Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores[J].AAPG Bulletin,2012,96(6):1071-1098.
[4]	罗小平,吴飘,赵建红,等.富有机质泥页岩有机质孔隙研究进展[J].成都理工大学学报(自然科学版),2015,42(1):50-59. Luo Xiaoping,Wu Piao,Zhao Jianhong,et al.Study advances on organic pores in organic matter-rich mud shale[J].Journal of Chengdu University of Technology (Science & Technology Edition),2015,42(1):50-59.
[5]	Athy L F.Density,porosity and compaction of sedimentary rocks[J].AAPG Bulletin,1930,14(1):1-24.
[6]	崔景伟,朱如凯,崔京钢.页岩孔隙演化及其与残留烃量的关系:来自地质过程约束下模拟实验的证据[J].地质学报,2013,87(5):730-736. Cui Jingwei,Zhu Rukai,Cui Jinggang.Relationship of porous evolution and residual hydrocarbon:Evidence from modeling experiment with geological constrains[J].Acta Geologica Sinica,2013,87(5):730-736.
[7]	胡海燕.富有机质Woodford页岩孔隙演化的热模拟实验[J].石油学报,2013,34(5):820-825. Hu Haiyan.Porosity evolution of the organic-rich shale with thermal maturity increasing[J].Acta Petrolei Sinica,2013,34(5):820-825.
[8]	薛莲花,杨巍,仲佳爱,等.富有机质页岩生烃阶段孔隙演化:来自鄂尔多斯延长组地质条件约束下的热模拟实验证据[J].地质学报,2015,89(5):970-978. Xue Lianhua,Yang Wei,Zhong Jia'ai,et al.Porous evolution of the organic-rich shale from simulated experiment with geological constrains,samples from Yanchang Formation in Ordos Basin[J].Acta Geologica Sinica,2015,89(5):970-978.
[9]	郭秋麟,陈晓明,宋焕琪,等.泥页岩埋藏过程孔隙度演化与预测模型探讨[J].天然气地球科学,2013,24(3):439-449. Guo Qiulin,Chen Xiaoming,Song Huanqi,et al.Evolution and models of shale porosity during burial process[J].Natural Gas Geoscience,2013,24(3):439-449.
[10]	焦淑静,张慧,薛东川,等.泥页岩孔隙类型、形态特征及成因研究[J].电子显微学报,2015,34(5):421-427. Jiao Shujing,Zhang Hui,Xue Dongchuan,et al.Study on morphological characteristics of micropores and microcracks in shale[J].Journal of Chinese Electron Microscopy Society,2015,34(5):421-427.
[11]	柴肇云,郭卫卫,陈维毅,等.泥岩孔裂隙分布特征及其对吸水性的影响[J].煤炭学报,2012,37(增刊1):75-80. Chai Zhaoyun,Guo Weiwei,Chen Weiyi,et al.Distribution characteristics of mudstone pore fracture and its influence on absorption[J].Journal of China Coal Society,2012,37(SⅠ):75-80.
[12]	李军,路菁,李争,等.页岩气储层"四孔隙"模型建立及测井定量表征方法[J].石油与天然气地质,2014,35(2):266-271. Li Jun,Lu Jing,Li Zheng,et al.'Four-pore' modeling and its quantitative logging description of shale gas reservoir[J].Oil & Gas Geology,2014,35(2):266-271.
[13]	Rubey W W,Hubbert M K.Role of fluid Pressure in mechanics of overthrust faulting:II.Overthrust belt in geosynclinal area of western Wyoming in light of fluid-pressure hypothesis[J].GSA Bulletin,1959,70(2):167-206
[14]	Kiang F R.Some applications of perturbation method in thin plate bending problems[J].Applied Mathematics and Mechanics,1980,1(1):35-53.
[15]	Baldwin B,Butler C O.Compaction curves[J].AAPG Bulletin,1985,69(4):622-626.
[16]	张辉,彭平安.烃源岩有机碳含量恢复探讨[J].地球化学,2011,40(1):56-62. Zhang Hui,Peng Ping'an.Study on the recovery of original organic carbon content of source rock[J].Geochimica,2011,40(1):56-62.