页岩水化微观孔隙结构变化定点观测实验

隋微波; 田英英; 姚晨昊

doi:10.11698/PED.2018.05.16

石油勘探与开发 >

2018 , Vol. 45 >Issue 5: 894 - 901

DOI: https://doi.org/10.11698/PED.2018.05.16

石油工程

页岩水化微观孔隙结构变化定点观测实验

隋微波 ,
田英英 ,
姚晨昊

展开

1. 中国石油大学（北京）油气资源与探测国家重点实验室,北京102249;
2. 中国石油大学（北京）石油工程教育部重点实验室,北京102249;
3. 中国石油大学（北京）石油工程学院,北京102249

隋微波（1981-）,女,黑龙江呼兰人,博士,中国石油大学（北京）石油工程学院副教授,主要从事数字岩心、智能完井及微观渗流方面的理论研究工作。地址：北京市昌平区府学路18号,中国石油大学（北京）石油工程学院,邮政编码：102249。E-mail: suiweibo@cup.edu.cn

收稿日期: 2017-12-21

网络出版日期: 2018-07-18

基金资助

国家自然科学基金面上项目“应力敏感条件下的数字岩心微观渗流分析方法研究”（51474224）; 中国石油大学（北京）青年创新团队C计划（C201605）

收起

Investigation of microscopic pore structure variations of shale due to hydration effects through SEM fixed-point observation experiments

SUI Weibo ,
TIAN Yingying ,
YAO Chenhao

Expand

1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
2. Key Laboratory of Petroleum Engineering of Ministry of Education, China University of Petroleum, Beijing 102249, China;
3. College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China

Received date: 2017-12-21

Online published: 2018-07-18

Fold

摘要

基于4种不同类型页岩露头岩样的水化实验,应用场发射扫描电镜对实验样品水化前、后的微观孔隙变化进行定点观测与对比分析。研究表明高含量的蒙脱石及碳酸盐类矿物有助于水化作用形成溶蚀孔及矿物颗粒的松动和脱落;样品原有的矿物颗粒排列、胶结状况和微裂隙发育情况对水化后溶蚀孔的形成和矿物颗粒的脱落具有重要影响;水化作用未改变有机质孔隙结构,水化过程中产生的溶蚀孔起源于基质矿物粒间孔和矿物粒内孔,基质孔隙的溶蚀过程也会造成矿物颗粒的松动和脱落;矿物颗粒沿平行层理面压实条件下,垂直层理样品一般较平行层理样品产生的溶蚀孔密度更大、小孔径溶蚀孔占比更高;对于天然微裂缝不发育的页岩样品,水化过程中微裂缝的产生与发展可能与碳酸盐类矿物含量有关。图11表4参22

关键词： 页岩; 水化作用; 微观孔隙结构; 矿物组分; 定点观测

本文引用格式

隋微波 , 田英英 , 姚晨昊 . 页岩水化微观孔隙结构变化定点观测实验[J]. 石油勘探与开发, 2018 , 45(5) : 894 -901 . DOI: 10.11698/PED.2018.05.16

Abstract

This paper conducted the shale hydration experiments by using four different types of shale outcrop samples. The microscopic pore structure variations before and after hydration were recorded, compared and analyzed through Field Emission Scanned Electronic Microscope (FESEM) with fixed-point observation technique. The results showed that higher content of montmorillonite and carbonate minerals would contribute to the form of dissolution pores and looseness of mineral grains; some critical factors also include original alignment and cementation of mineral grains, and distribution of natural microfractures. Hydration doesn’t change the organic pore structure. Almost all dissolution pores originated from mineral intergranular and intragranular pores in matrix, and the dissolution of matrix pores also lead to mineral particles to loose and fall off. When the mineral grains are aligned and compacted along with the bedding-parallel planes, the density of dissolution pores and the number of dissolution pores of small size in bedding-vertical specimens are usually larger than that in bedding-parallel specimens. For the shale samples with few natural microfractures, carbonate minerals may contribute to the generation and propagation of microfractures during hydration.

Key words： shale; hydration; microscopic pore structure; mineral component; fixed-point observation

参考文献

[1] 任凯, 葛洪魁, 杨柳, 等. 页岩自吸实验及其在返排分析中的应用[J]. 科学技术与工程, 2015, 15(30): 106-109.
REN Kai, GE Hongkui, YANG Liu, et al.Imbibition experiment of shale and its application in flowback analysis[J]. Science Technology and Engineering, 2015, 15(30): 106-109.
[2] 杨柳. 压裂液在页岩储层中的吸收及其对工程的影响[D]. 北京: 中国石油大学(北京), 2016.
YANG Liu.Fracturing fluid imbibition into gas shale and its impact on engineering[D]. Beijing: China University of Petroleum (Beijing), 2016.
[3] 康毅力, 杨斌, 李相臣, 等. 页岩水化微观作用力定量表征及工程应用[J]. 石油勘探与开发, 2017, 44(2): 301-308.
KANG Yili, YANG Bin, LI Xiangchen, et al.Quantitative characterization of micro forces in shale hydration and field applications[J]. Petroleum Exploration and Development, 2017, 44(2): 301-308.
[4] 温航, 陈勉, 金衍, 等. 硬脆性泥页岩斜井段井壁稳定力化耦合研究[J]. 石油勘探与开发, 2014, 41(6): 748-754.
WEN Hang, CHEN Mian, JIN Yan, et al.A chemo-mechanical coupling model of deviated borehole stability in hard brittle shale[J]. Petroleum Exploration and Development, 2014, 41(6): 748-754.
[5] 马天寿, 陈平. 基于CT扫描技术研究页岩水化细观损伤特性[J]. 石油勘探与开发, 2014, 41(2): 227-233.
MA Tianshou, CHEN Ping.Study of meso-damage characteristics of shale hydration based on CT scanning technology[J]. Petroleum Exploration and Development, 2014, 41(2): 227-233.
[6] 刘向君, 熊健, 梁利喜. 龙马溪组硬脆性页岩水化实验研究[J]. 西南石油大学学报(自然科学版), 2016, 38(3): 178-186.
LIU Xiangjun, XIONG Jian, LIANG Lixi.Hydration experiment of hard brittle shale of the Longmaxi Formation[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2016, 38(3): 178-186.
[7] 冒海军, 郭印同, 王光进, 等. 黏土矿物组构对水化作用影响评价[J]. 岩土力学, 2010, 31(9): 2723-2728.
MAO Haijun, GUO Yintong, WANG Guangjin, et al.Evaluation of impact of clay mineral fabrics on hydration process[J]. Rock and Soil Mechanics, 2010, 31(9): 2723-2728.
[8] 朱宝龙, 李晓宁, 巫锡勇, 等. 黑色页岩遇水膨胀微观特征试验研究[J]. 岩石力学与工程学报, 2015, 34(S2): 3896-3905.
ZHU Baolong, LI Xiaoning, WU Xiyong, et al.Experimental study of micro-characteristics of swelling for black shale under influence of water[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(S2): 3896-3905.
[9] 郑晓卿, 刘建, 卞康, 等. 鄂西北页岩饱水软化微观机制与力学特性研究[J]. 岩土力学, 2017, 38(7): 2022-2028.
ZHENG Xiaoqing, LIU Jian, BIAN Kang, et al.Softening micro-mechanism and mechanical properties of water-saturated shale in Northwestern Hubei[J]. Rock and Soil Mechanics, 2017, 38(7): 2022-2028.
[10] 黄宏伟, 车平. 泥岩遇水软化微观机理研究[J]. 同济大学学报(自然科学版), 2007, 35(7): 866-870.
HUANG Hongwei, CHE Ping.Research on micro-mechanism of softening and argillitization of mudstone[J]. Journal of Tongji University (Natural Science), 2007, 35(7): 866-870.
[11] CIPOLLA C L, WARPINSKI N R, MAYERHOFER M J, et al.The relationship between fracture complexity, reservoir properties, and fracture-treatment design[J]. SPE Production & Operations, 2010, 25(4): 438-452.
[12] NEJAD A M, SHELLEY R F, LEHMAN L V, et al.Development of a brittle shale fracture network model[R]. Texas, USA: SPE Hydraulic Fracturing Technology Conference, 2013.
[13] MAYERHOFER M J, LOLON E P, WARPINSKI N R, et al.What is stimulated reservoir volume?[J]. SPE Production & Operations, 2010, 25(1): 89-98.
[14] 钱斌, 朱炬辉, 杨海, 等. 页岩储集层岩心水化作用实验[J]. 石油勘探与开发, 2017, 44(4): 615-621.
QIAN Bin, ZHU Juhui, YANG Hai, et al.Experiments on shale reservoirs plugs hydration[J]. Petroleum Exploration and Development, 2017, 44(4): 615-621.
[15] GUPTA A, XU M, DEHGHANPOUR H.Experimental investigation for microscale stimulation of shales by water imbibition during the shut-in periods[R]. SPE 185058-MS, 2017.
[16] 卢运虎, 梁川, 金衍, 等. 高温下页岩水化损伤的各向异性实验研究[J]. 中国科学: 物理学力学天文学, 2017, 47(11): 138-145.
LU Yunhu, LIANG Chuan, JIN Yan, et al.Experimental study on hydration damage of anisotropic shale under high temperature[J]. SCIENTIA SINICA Physica, Mechanica & Astronomica, 2017, 47(11): 138-145.
[17] 邹才能, 董大忠, 王玉满, 等. 中国页岩气特征、挑战及前景(二)[J]. 石油勘探与开发, 2016, 43(2): 166-178.
ZOU Caineng, DONG Dazhong, WANG Yuman, et al.Shale gas in China: Characteristics, challenges and prospects (Ⅱ)[J]. Petroleum Exploration and Development, 2016, 43(2): 166-178.
[18] AKABARABADI M, PIRI M.Nanotomography of the spontaneous imbibition in shale[R]. URTEC 1922555-MS, 2014.
[19] 张磊, 康钦军, 姚军, 等. 页岩压裂中压裂液返排率低的孔隙尺度模拟与解释[J]. 科学通报, 2014, 59(32): 3197-3203.
ZHANG Lei, KANG Qinjun, YAO Jun, et al.The explanation of low recovery of fracturing fluid in shale hydraulic fracturing by pore-scale simulation[J]. Chinese Science Bulletin, 2014, 59(32): 3197-3203.
[20] O’BRIEN D E, CHENEVERT M E. Stabilizing sensitive shales with inhibited, potassium-based drilling fluids[J]. Journal of Petroleum Technology, 1973, 25(9): 1089-1100.
[21] LOUCKS R G, REED R M, RUPPEL S C, et al.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.
[22] ODUSINA E, SONDERGELD C, RAI C.An NMR study on shale wettability[R]. SPE 147371-MS, 2011.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献