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川南地区龙马溪组页岩润湿性分析及影响讨论

  

  1. 西南石油大学油气藏地质及开发工程国家重点实验室,四川 成都 610500
  • 收稿日期:2014-02-13 修回日期:2014-03-22 出版日期:2014-10-10 发布日期:2014-10-10
  • 作者简介:刘向君(1969-),女,四川成都人,教授,博士,主要从事岩石力学、岩石物理、非常规页岩气开发等方面的研究与教学工作. E-mail:liuxiangjunswpi@163.com.
  • 基金资助:

    国家自然科学基金项目“硬脆性泥页岩地层井周裂缝形态调控岩石力学基础研究”(编号:51274172)|国家自然科学基金重点支持项目“页岩气低成本高效钻完井技术基础研究”(编号:U1262209)联合资助.

Analysis of the Wettability of Longmaxi Formation Shale in the South Region of Sichuan Basin and Its Influence



  1. (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)
  • Received:2014-02-13 Revised:2014-03-22 Online:2014-10-10 Published:2014-10-10

摘要:

国内外大部分学者研究认为泥页岩表面润湿性为水湿,而页岩气藏中页岩岩石存在有机质影响,页岩表面润湿性表现比较复杂,因此选择四川盆地龙马溪组野外露头及井下岩心进行分析,通过开展一系列实验,研究分析了龙马溪组页岩润湿性,并从3个方面初步探索讨论了润湿性对页岩气藏的影响。研究结果表明龙马溪组页岩表面既亲油又亲水,且页岩表面更倾向于油湿,页岩岩石孔隙表面处润湿性存在差异,出现非均匀润湿性即斑状润湿|页岩自吸吸水率、吸油率随时间增加而先上升后趋于稳定,页岩自吸吸水率大于自吸吸油率|页岩浸泡在水中水化应力随着时间增加而先呈上升后趋于稳定,而先浸泡白油后浸泡水中水化应力上升速度减慢|页岩硬度随浸泡时间增加、浸泡温度升高以及浸泡压力增大而呈下降趋势,其中浸泡白油中硬度下降幅度较小,而浸泡水中硬度下降幅度较大|页岩表面吸附特性与表面自由能有关,表面自由能随水接触角减小而增大,同时页岩表面亲油对气态烃有较强吸附能力|页岩表面亲水性易造成水锁,而表面亲油性可减轻水锁伤害,页岩气藏水锁伤害评价应考虑页岩表面既亲油又亲水特性影响|油基钻井液对页岩强度影响较小,而水基钻井液对页岩强度影响较大,易造成井壁失稳,水基钻井液体系优化需考虑抑制其水化作用。

关键词: 龙马溪组页岩, 润湿性, 油湿, 水湿, 吸附特性, 水锁, 井壁稳定

Abstract:

Researchers suggest that shale wettability was water-wet,but the presence of organics would affect shales and complicate the interpretation of wettability in shale gas reservoirs.Therefore,experiments were done with outcrop and core samples from the Longmaxi Formation shale of the southern region of Sichuan Basin to determine shale wettability,and the wettability effects on the shale reservoirs were preliminary discussed from three respects.The result shows that the wettability of the Longmaxi Formation shale is water-wet and oil-wet,and the wettability is more tend to oil-wet.The wettability of the pore surface of rocks is different,displaying inhomogeneous wettability and mixed wettability.The oil absorption rate of spontaneous imbibition and water absorption rate of spontaneous imbibition of the shale tend to increase first and then become stable with the increase of time,and the oil absorption rate of imbibition is bigger than the water absorption rate of imbibition.The hydration swelling stress of the shale tends to increase first and then become stable with the increase of time.For the shale rocks which have been soaked in oil first and then experienced hydration swelling stress test,the increase of velocity of hydration swelling stress would slow down.The hardness of the shale will decline with the increase of soaking time,temperature and pressure.And in the white oil,the trend is smaller.While in the water,this trend is more obvious.The adsorption characteristics of the shale surface are related to the surface free energy,which increases with the decrease of surface water contact angle.Meanwhile,the oil-wet of the shale surface has strong adsorption capacity for gaseous hydrocarbon.The water-wet surface can cause water blocking damage,but the oil-wet surface can lessen water blocking damage.So in shale reservoir,it is necessary to consider the influence of oil-wet and water-wet behavior in shale surface.The oil based drilling fluid has little influence on the strength of shale rock,while the water based drilling fluid has significant influence on the strength of shale rock,and causes wellbore instability.The water based drilling fluid systems need to avoid hydration swelling.
 

Key words: Longmaxi Formation shale, Wettability, Oil-wet, Water-wet, Adsorption capacity, Water blocking, Wellbore stability

中图分类号: 

  • TE121.3
[1]Dong Dazhong,Cheng Keming,Wang Yuman ,et al.Forming conditions and characteristics of shale gas in the Lower Paleozoic of the Upper Yangtze region,China[J].Oil & Gas Geology,2010,31(3):288-299.[董大忠,程克明,王玉满,等.中国上扬子区下古生界页岩气形成条件及特征[J].石油与天然气地质,2010,31(3):288-299.]
[2]Zou Caineng,Dong Dazhong,Wang Shejiao ,et al.Geological characteristics,formation mechanism and resource potential of shale gas in China[J].Petroleum Exploration and Development,2010,37(6):641-653.[邹才能,董大忠,王社教,等.中国页岩气形成机理地质特征及资源潜力[J].石油勘探与开发,2010,37(6):641-653.]
[3]Huang Jinliang,Zou Caineng,Li Jianzhong ,et al.Shale gas accumulation conditions and favorable zones of Silurian Longmaxi Formation in south Sichuan Basin,China[J].Journal of China Coal Society,2012,37(5):782-787.[黄金亮,邹才能,李建忠,等.川南志留系龙马溪组页岩气形成条件与有利区分析[J].煤炭学报,2012,37(5):782-787.]
[4]Huang Wenming,Liu Shugen,Ma Wenxing ,et al.Shale gas exploration prospect of Lower Paleozoic in southeastern Sichuan and western Hubei-eastern Chongqing areas[J].Geological Bulletin of China,2011,30(supplement 1):364-371.[黄文明,刘树根,马文辛,等.川东南—鄂西渝东地区下古生界页岩气勘探前景[J].地质通报,2011,30(增1):364-371.]
[5]Zhao Pengda,Li Guifan,Zhang Jinchuan.Shale gas favorable locks delineation and quantitative evaluation based on the geological anomaly theory:A case study of the Lower Silurian Longmaxi Formation the southeastern area of Chongqing[J].Natural Gas Industry,2012,32(6):1-8.[赵鹏大,李桂范,张金川.基于地质异常理论的页岩气有利区块圈定与定量评价—以渝东南地区下志留统龙马溪组为例[J].天然气工业,2012,32(6):1-8.]
[6]Wang Yuman,Dong Dazhong,Li Jianzhong ,et al.Reservoir characteristic of shale gas in Longmaxi Formation of the Lower Silurian,southern Sichuan[J].Atca Petrolei Sincia,2012,33(4):551-561.[王玉满,董大忠,李建忠,等.川南下志留统龙马溪组页岩气储层特征[J].石油学报,2012,33(4):551-561.]
[7]Tian Hua,Zhang Shuichang,Liu Shaobo ,et al.Determination of organic-rich shale pore feature by mercury injection and gas adsorption methods[J].Atca Petrolei Sincia,2012,32(3):419-427.[田华,张水昌,柳少波,等.压汞法和气体吸附法研究富有机质页岩孔隙特征[J].石油学报,2012,32(3):419-427.]
[8]Wei Xiangfeng,Liu Ruobing,Zhang Tingshan ,et al.Micro-pores structure characteristics and development control factors of shale gas reservoir:A case of Longmaxi Formation in XX area of southern Sichuan and north Guizhou[J].Natural Gas Geoscience,2013,24(5):1048-1059.[魏祥峰,刘若冰,张廷山,等.页岩气储层微观孔隙结构特征及发育控制因素——以川南—黔北XX地区龙马溪组为例[J].天然气地球科学,2013,24(5):1048-1059.]
[9]Yang Feng,Ning Zhengfu,Kong Detao ,et al.Pore structure of shales from high pressure mercury injection and nitrogen adsorption method[J].Natural Gas Geoscience,2013,24(3):450-455.[杨峰,宁正福,孔德涛,等.高压压汞法和氮气吸附法分析页岩孔隙结构[J].天然气地球科学,2013,24(3):450-455.]
[10]Yan Chuangliang,Deng Jingen,Wei Baohua ,et al.Research on collapsing pressure of gas shale[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(8):1595-1602.[闫传梁,邓金根,蔚宝华,等.页岩气储层井壁坍塌压力研究[J].岩石力学与工程学报,2013,32(8):1595-1602.]
[11]Ross D J K,Bustin R M.The importance of shalecomposition and pore structure upon gas storage potential of shale gas reservoirs[J].Marine and Petroleum Geology,2009,26(6):916-927.
[12]Ji L,Zhang T,Milliken K L.Experimental investigation of maincontrols to methane adsorption in clay-rich rocks[J].Applied Geochemistry,2012,27:2533-2545.
[13]Zhang T,Geoffrey S E,Stephen C R ,et al.Effect of organic-matter type and thermal maturity on methane adsorption in shale-gas systems[J].Organic Geochemistry,2012,47,120-131.
[14]Bi He,Jiang Zhenxue,Li Peng ,et al.Adsorption characteristic and influence factors of Longmaxi shale in southern Chongqing[J].Natural Gas Geoscience,2014,25(2):302-310.[毕赫,姜振学,李鹏,等.渝东南地区龙马溪组页岩吸附特征及其影响因素[J].天然气地球科学,2014,25(2):302-310.]
[15]Odusina E,Sondergeld C,Rai C.An NMR study on shale wettability[C].SPE147371 //Canadian Unconventional Resources Conference,Alberta,Canada,15-17 November 2011.
[16]Josh M,Esteban L,Delle Piane C ,et al.Laboratory characterization of shale properties[J].Journal of Petroleum Science and Engineering,2012,88-89:107-124.
[17]Anderson W G.Wettability literature survey- part 1:Rock/Oil/Brine Interactions and the Effects of Core Handling on Wettability[J].Journal of  Petroleum Technology,1986,38(10):1125-1144.
[18]Anderson W G.Wettability literature survey-part 3:The effects of wettability on the electrical properties of porous media[J].Journal of Petroleum Technology,1986,38(12):1371-1378.
[19]Anderson W G.Wettability literature survey- part 4:The effects of wettability on capillary pressure[J].Journal of Petroleum Technology,1987,39(10):1283-1300.
[20]Anderson W G.Wettability literature survey part 5:The effects of wettability on relative permeability[J].Journal of Petroleum Technology,1987,39(11):1453-1468.
[21]Anderson W G.Wettability literature survey-part 6:The effects of wettability on water-flooding[J].Journal of Petroleum Technology,1987,39(12):1605-1622.
[22]Al-Bazali T M.Experimental Study of the Membrane Behavior of Shale Duringinteraction with Water-based and Oil-based Muds[D].Austin:The University of Texas at Austin,2005.
[23]Al-Bazali T M,Zhang J,Chenevert M E ,et al.Capillary entry pressure of oil-based muds and shales:The key to the success of oil-based muds[J].Energy Sources,Part A:Recovery,Utilization,and Environmental Effects,2007,33(4):297-308.
[24]Al-Bazali T M,Zhang J,Chenevert M E ,et al.Factors controlling the membrane efficiency of shales when Interacting with water-based and oil-based muds[C].SPE 100735// International Oil & Gas Conference and Exhibition in China,Beijing,China5-7 December 2006.
[25]Oleas A,Osuji C E,Chenevert M E ,et al.Entrance pressure of oil based mud Into shale:effect of shale water activity and mud properties[C].SPE 116364//SPE Annual Technical Conference and Exhibition,Denver,Colorado,USA,21-24 September 2008.
[26]Yue Qiansheng,Li Yuguang,He Baosheng ,et al.Research on the hard brittle shale and drilling fluid type in WZ12-1N Oilfeild[J].China Offshore Oil and Gas,2005,17(1):44-47.[岳前升,李玉光,何保生,等.涠洲12-1N油田硬脆性泥页岩研究及钻井液技术对策[J].中国海上油气,2005,17(1):44-47.]
[27]Zhao Feng,Tang Hongming,Meng Yingfeng ,et al.Study on the influence of microscopic geologic characteristics on well bore stablility of brittle shale[J].Drilling & Production Technology,2007,30(6):16-18.[赵峰,唐洪明,孟英峰,等.微观地质特征对硬脆性泥页岩井壁稳定性影响与对策研究[J].钻采工艺,2007,30(6):16-18.]
[28]Passey Q R,Bohacs K M,Esch W L ,et al.From oil-prone source rock to gas-producing shale reservoir-geologic and petrophysical characterization of unconventional shale gas reservoirs[C].SPE 131350// International Oil and Gas Conference and Exhibition in China,Beijing,China,8-10 June 2010.
[29]Borysenko A,Clennell B,Sedev R ,et al.Experimental investigations of the wettability of clays and shales[J].Journal of Geophysical Research,2009,114(B7):1-11.
[30]Zou Caineng,Zhu Rugai,Bai Bing ,et al.First discovery of nano-pore throat in oil and gas reservoir in China and its scientific value [J].Acta Petrologica Sinica,2011,27(6):1857-1864.[邹才能,朱如凯,白斌,等.中国油气储层中纳米首次发现及其科学价值[J].岩石学报,2011,27(6):1857-1864.]
[31]Yang Shenglai,Wei Junzhi.Reservoir Physics[M].Beijing:Petroleum Industry Press,2004.[杨胜来,魏俊之.油层物理学[M].北京:石油工业出版社,2004.]
[32]Lu Xiancai,Hou Qingfeng,Yi Lin ,et al.Measurement of contact angles of several common minerals and its discussion[J].Acta Petrologica Et Mineralogica,2003,22(4):397-400.[陆现彩,侯庆锋,尹琳,等.几种常见矿物的接触角测定及其讨论[J].岩石矿物学杂志,2003,22(4):397-400.]
[33]Willbery D M,Steinsberger N,Hoover R ,et al.Optimization of fracture cleanup using flow back analysis[C].SPE 39920// SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium,Denver,Colorado,1998:5-8.April.
[34]Wang Q,Guo B,Gao D.Is formation damage an issue in shale gas development[C].SPE 149623//SPE International Symposium and Exhibition on Formation Damage Control,USA:Lafayette,Louisiana,2012:15-17.
[35]Parekh B,Sharma M M.Cleanup of water blocks in depleted low-permeability reservoirs[C].SPE 89837//SPE Annual Technical Conference and Exhibition,Texas:Houston,26-29 September 2004.
[36]Cheng Y.Impact of water dynamics in fractures on the performance of hydraulically fractures wells in gas-shale reservoirs[J].Journal of Canadian Petroleum Technology,2012,51(2):143-151.
[37]An Mingyu,Wang Honhying,Wei Dong ,et al.Experimental study of rock mechanics properties of deep formations in Daqing Oilfield[J].Petroleum Drilling Techniques,2002,30(1):13-15.[安明玉,王洪英,魏东,等.大庆油田深层岩石力学特性参数的试验研究[J].石油钻探技术,2002,30(1):13-15.]
 
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