毛细管突破压力模拟实验及页岩封闭能力

张文涛

doi:10.11781/sysydz201804577

毛细管突破压力模拟实验及页岩封闭能力

doi: 10.11781/sysydz201804577

张文涛^1,2

1. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126;
2. 南京大学, 南京 210046

基金项目:

国家科技重大专项“重点层系页岩气生成与储集机理研究”（2017ZX05036002）和国家重点基础研究发展计划（973计划）项目“陆相页岩油储集空间与发育模式”（2014CB239102）资助。

详细信息

作者简介:
张文涛(1982-),男,工程师,从事石油天然气实验技术和应用研究。E-mail:zhangwt.syky@sinopec.com。

中图分类号: TE122.2
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出版历程
- 收稿日期: 2018-03-30
- 修回日期: 2018-06-07
- 刊出日期: 2018-07-28

Experimental study of the breakthrough pressure of capillaries and the sealing ability of shale

ZHANG Wentao^1,2

1. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China;
2. Nanjing University, Nanjing, Jiangsu 210046, China

摘要

摘要: 为了研究流体流动路径上的多个两相流体界面对岩石封闭能力的影响，利用单个毛细管进行了不同条件下的突破压力模拟实验。结果显示，毛细管中为单相流体时，使流体流动所需的突破压力与毛细管的直径有关而与毛细管长度无关；当毛细管中的流体为气液混合相时，所需突破压力随气水界面数的增加而增大；而毛细管的表面润湿性的变化则会使得突破压力随气水界面数目而变化的趋势更加显著。根据实验结果认为，富有机质页岩作为盖层时，生成的烃类流体与岩石中的水形成了混合相流体，而疏水的有机质表面和亲水的矿物表面形成润湿性不断变化的流动通道，从而导致突破压力的增大，因此有机质及其中烃类的生成能够提高盖层的封盖性能。当泥页岩盖层中的流体为气水/油水混合相时，其突破压力在多种机制的作用下，与盖层厚度存在正相关性。在低渗油气藏开发中，油气和水的混合分布是形成启动压力梯度的一种重要机制。
- 泥页岩 /
- 生烃作用 /
- 突破压力 /
- 封盖能力 /
- 毛细管
Abstract: Several experiments were made with mono-capillary-tubes to study how breakthrough pressure of mudstone cap rock changes when there are multiple two-phase interfaces in the flow path. The results indicated that breakthrough pressure is related to diameter but not the length of the capillary tube when there is only liquid phase in the tube. However, with two mixed phases in the tube, the breakthrough pressure slightly increases with the number of two-phase interfaces, and the increase becomes more remarkable when the wettability of tube surface changes from hydrophilic to a mix of hydrophilic and hydrophobic. The results indicated that the sealing ability of black shale could be improved by the presence of organic matter and hydrocarbon generation. Additionally, for shales with two phases in pore system, breakthrough pressure has a positive relation with the thickness of cap rock. This interpretation is different from previous ones with respect to breakthrough pressure being related to the thickness of cap rock. Mixed phases of oil/gas and water is also an important explanation why fluids can only be mobilized when the driving pressure gradient reaches a critical value, which is called starting pressure gradient in low permeability pools.
- shale /
- hydrocarbon generation /
- breakthrough pressure /
- sealing capacity /
- capillary

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参考文献(35)

[1]	HILDENBRAND A,SCHLÖMER S,KROOSS B M.Gas breakthrough experiments on fine-grained sedimentary rocks[J].Geofluids,2002,2(1):3-23.
[2]	王少昌,裴锡古,傅锁堂,等.陕甘宁盆地上古生界泥质岩封盖能力研究[J].石油学报,1987,8(2):25-32. WANG Shaochang,PEI Xigu,FU Suotang,et al.A study of mudstone sealing ability in Upper Palaeozoic group of Shun-Gan-Ning basin[J].Acta Petrolei Sinica,1987,8(2):25-32.
[3]	游秀玲.天然气盖层评价方法探讨[J].石油与天然气地质,1991,12(3):261-275. YOU Xiuling.Study on assessment method of caprocks in natural gas pools[J].Oil & Gas Geology,1991,12(3):261-275.
[4]	郝石生,黄志龙,杨家琦.天然气运聚动平衡及其应用[M].北京:石油工业出版社,1994. HAO Shisheng,HUANG Zhilong,YANG Jiaqi.Dynamic balance of natural gas migration & accumulation and its application[M].Beijing:Petroleum Industry Press,1994.
[5]	许化政.渤海湾盆地泥岩封闭性能研究[J].天然气工业,1991,11(6):1-6. XU Huazheng.Research on the sealing properties of the mud stones in Bohai Bay Basin[J].Natural Gas Industry,1991,11(6):1-6.
[6]	WATTS N L.Theoretical aspects of cap-rock and fault seals for single-and two-phase hydrocarbon columns[J].Marine and Petroleum Geology,1987,4(4):274-307.
[7]	俞凌杰,范明,刘伟新,等.盖层封闭机理研究[J].石油实验地质,2011,33(1):91-95. YU Lingjie,FAN Ming,LIU Weixin,et al.Seal mechanism of cap rocks[J].Petroleum Geology & Experiment,2011,33(1):91-95.
[8]	童晓光,牛嘉玉.区域盖层在油气聚集中的作用[J].石油勘探与开发,1989(4):1-8. TONG Xiaoguang,NIU Jiayu.Effects of regional cap formation on oil and gas accumulation[J].Petroleum Exploration and Development,1989(4):1-8.
[9]	蒋有录.油气藏盖层厚度与所封盖烃柱高度关系问题探讨[J].天然气工业,1998,18(2):20-23. JIANG Youlu.A discussion on the relation between the cap rock thickness of oil & gas reservoir and its hydrocarbon column height[J].Natural Gas Industry,1998,18(2):20-23.
[10]	付广,许风鸣.盖层厚度对封闭能力控制作用分析[J].天然气地球科学,2003,14(3):186-190. FU Guang,XU Fengming.Quantitative research on controlling of thickness to seal abilities of caprock[J].Natural Gas Geoscience,2003,14(3):186-190.
[11]	袁际华,柳广弟,张英.相对盖层厚度封闭效应及其应用[J].西安石油大学学报(自然科学版),2008,23(1):34-36. YUAN Jihua,LIU Guangdi,ZHANG Ying.Thickness sealing effect of relative caprock and its application[J].Journal of Xi'an Shiyou University (Natural Science Edition),2008,23(1):34-36.
[12]	SCHOWALTER T T.Mechanics of secondary hydrocarbon migration and entrapment[J].AAPG Bulletin,1979,63(5):723-760.
[13]	SCHLÖMER S,KROOSS B M.Experimental characterization of the hydrocarbon sealing efficiency of cap rocks[J].Marine and Petroleum Geology,1997,14(5):565-580.
[14]	KATZ A J,THOMPSON A H.Prediction of rock electrical conductivity from mercury injection measurements[J].Journal of Geophysical Research,1987,92(B1):599-607.
[15]	GALLÉ C.Gas breakthrough pressure in compacted Fo-Ca clay and interfacial gas overpressure in waste disposal context[J].Applied Clay Science,2000,17(1/2):85-97.
[16]	GALLÉ C,TANAI K.Evaluation of gas transport properties of backfill materials for waste disposal:H₂ migration experiments in compacted Fo-Ca clay[J].Clays and Clay Minerals,1998,46(5):498-508.
[17]	曹涛涛,宋之光.页岩有机质特征对有机孔发育及储层的影响[J].特种油气藏,2016,23(4):7-13. CAO Taotao,SONG Zhiguang.Effects of organic matter properties on organic pore development and reservoir[J].Special OiL & Gas Reservoirs,2016,23(4):7-13.
[18]	潘涛,姜歌,孙王辉.四川盆地威远地区龙马溪组泥页岩储层非均质性[J].断块油气田,2016,23(4):423-428. PAN Tao,JIANG Ge,SUN Wanghui.Shale reservoir heterogeneity of Longmaxi Formation,Weiyuan area,Sichuan Basin[J].Fault-Block Oil and Gas Field,2016,23(4):423-428.
[19]	张爽,隋微波.页岩储层有机质分布定量分析及重构模型[J].油气地质与采收率,2016,23(2):22-28. ZHANG Shuang,SUI Weibo.Reconstruction and quantitative analysis methods for organic matter distribution in shale reservoirs[J].Petroleum Geology and Recovery Efficiency,2016,23(2):22-28.
[20]	黄宇琪,张金川,张鹏,等.东濮凹陷北部沙三段泥页岩微观储集空间特征及其主控因素[J].山东科技大学学报(自然科学版),2016,35(3):8-16. HUANG Yuqi,ZHANG Jinchuan,ZHANG Peng,et al.Microscopic characteristics and main controlling factors of shale reservoir space of Es₃ formation,northern Dongpu Depression[J].Journal of Shandong University of Science and Technology(Natural Science), 2016, 35(3):8-16.
[21]	刘向君,熊健,梁利喜,等.川南地区龙马溪组页岩润湿性分析及影响讨论[J].天然气地球科学,2014,25(10):1644-1652. LIU Xiangjun,XIONG Jian,LIANG Lixi,et al.Analysis of the wettability of Longmaxi Formation shale in the south region of Sichuan Basin and its influence[J].Natural Gas Geoscience,2014,25(10):1644-1652.
[22]	范明,俞凌杰,徐二社,等.页岩气保存机制探讨[J].石油实验地质,2018,40(1):126-132. FAN Ming,YU Lingjie,XU Ershe,et al.Preservation mechanism of Fuling shale gas[J].Petroleum Geology & Experiment,2018,40(1):126-132.
[23]	SHOSA J D,CATHLES L M.Experimental investigation of capillary blockage of two phase flow in layered porous media[C]//Procee-dings of 21st GCSSEPM.Houston:GCSSEPM,2001:612-626.
[24]	APLIN A C,LARTER S R.Fluid flow,pore pressure,wettability,and leakage in mudstone cap rocks[C]//BOULT P,KALDI J.AAPG Hedberg Series 2:Evaluating Fault and Cap Rock Seals.Tulsa:AAPG,2005:1-12.
[25]	HEATH J E,DEWERS T A,MCPHERSON B J O L,et al.Pore-lining phases and capillary breakthrough pressure of mudstone caprocks:sealing efficiency of geologic CO₂ storage sites[J].International Journal of Greenhouse Gas Control,2012,11:204-220.
[26]	WÖRMEYER K,SMIRNOVA I.Breakthrough measurements of CO₂ through aminofunctionalised aerogel adsorbent at low partial pressure:experiment and modeling[J].Microporous and Mesoporous Materials,2014,184:61-69.
[27]	李百川,周巨标,丁玉盛,等.不同覆压条件下储层物性变化特征及水驱油实验研究[J].山东科技大学学报(自然科学版),2016,35(2):22-28. LI Baichuan,ZHOU Jubiao,DING Yusheng,et al.Experimental study of reservoir physical property change and water flooding under different overburden pressures[J].Journal of Shandong University of Science and Technology(Natural Science),2016,35(2):22-28.
[28]	DEMING D,CRANGANU C,LEE Y.Self-sealing in sedimentary basins[J].Journal of Geophysical Research:Solid Earth,2002,107(B12):2329.
[29]	黄志龙,郝石生.天然气扩散与浓度封闭作用的研究[J].石油学报,1996,17(4):36-41. HUANG Zhilong,HAO Shisheng.Study on sealing of gas concentration and diffussion in overlying gas reservoirs[J].Acta Petrolei Sinica,1996,17(4):36-41.
[30]	付广,姜振学,庞雄奇.盖层烃浓度封闭能力评价方法探讨[J].1997,18(1):39-43. FU Guang,JIANG Zhenxue,PANG Xiongqi.An estimation of sealing ability of hydrocarbon concentration of cap rocks[J].Acta Petrolei Sinica,1997,18(1):39-43.
[31]	付广,苏玉平.泥岩盖层抑制浓度封闭形成与演化及其研究意义[J].沉积学报,2006,24(1):141-147. FU Guang,SU Yuping.Recovering to formation and evolution of restraining concentration seal of mudstone caprock and its significance[J].Acta Sedimentologica Sinica,2006,24(1):141-147.
[32]	袁玉松,范明,刘伟新,等.盖层封闭性研究中的几个问题[J].石油实验地质,2011,33(4):336-340. YUAN Yusong,FAN Ming,LIU Weixin,et al.Several discussions of sealing capacity studies of caprock[J].Petroleum Geology & Experiment,2011,33(4):336-340.
[33]	王晓冬,郝明强,韩永新.启动压力梯度的含义与应用[J].石油学报,2013,34(1):188-191. WANG Xiaodong,HAO Mingqiang,HAN Yongxin.Implication of the threshold pressure gradient and its application[J].Acta Petrolei Sinica,2013,34(1):188-191.
[34]	李传亮.启动压力梯度真的存在吗?[J].石油学报,2010,31(5):867-870. LI Chuanliang.Is a starting pressure gradient necessary for flow in porous media?[J].Acta Petrolei Sinica,2010,31(5):867-870.
[35]	郝斐,程林松,李春兰,等.特低渗透油藏启动压力梯度研究[J].西南石油学院学报,2006,28(6):29-32. HAO Fei,CHENG Linsong,LI Chunlan,et al.Study on thres-hold pressure gradient in ultra-low permeability reservoir[J].Journal of Southwest Petroleum Institute,2006,28(6):29-32.