GENG Diandong，QI Xianyin，FU Peng，et al. Mechanical properties and damage constitutive model of mud shale under different drilling fluids immersion[J]. Coal Science and Technology，2023，51（10）：109−118
. DOI: 10.13199/j.cnki.cst.2022-1491| Citation: |
GENG Diandong，QI Xianyin，FU Peng，et al. Mechanical properties and damage constitutive model of mud shale under different drilling fluids immersion[J]. Coal Science and Technology，2023，51（10）：109−118 . DOI: 10.13199/j.cnki.cst.2022-1491
|
In the process of shale oil and gas drilling, the long-term erosion and weakening of drilling fluids promotes the extension and expansion of micro-fractures on mud shale, which leads to the reduction of rock mass strength and seriously threatens the stability of borehole wall. In order to explore the mechanical properties and damage evolution rules of mud shale under different drilling fluids immersion, Firstly, the mineral composition and structure of shale were analyzed by X-ray diffraction and environmental scanning electron microscopy. Then, uniaxial compression tests were carried out under different immersion systems and different immersion times, and the variation mechanism of mechanical parameters such as peak strength, elastic modulus and Poisson's ratio of shale under the weakening of drilling fluids were studied. Finally, based on the strain equivalence principle and Weibull statistical distribution theory, the damage constitutive model of rock under drilling fluids immersion and uniaxial loading was established. The results showed that the main body of mud shale has high content of clay minerals, abundant brittle minerals and dense distribution of micro-fractures. the elastic modulus of shale varied with the immersion environment and the increase of immersion time. Compared with the rock samples immersed in oil-based drilling fluid, the weakening effect of water-based drilling fluid soaking on its strength and elastic modulus is more obvious; by fitting the change trend of the mechanical parameters of shale under the weakening effect of different drilling fluids, the prediction model of elastic modulus of rock samples soaked in water-based drilling fluid and oil-based drilling fluid with respect to soaking time was proposed; For the mud shale under the weakening of drilling fluid, a uniaxial loading rock damage constitutive model considering the effect of pore compression stage is introduced. The evolution rules revealed the weakening damage mechanism of shale under different drilling fluids immersion.
| [1] |
马天寿,陈 平. 层理性页岩水平井井壁稳定性分析[J]. 中南大学学报(自然科学版),2015,46(4):1375−1383.
MA T T,CHEN P. Analysis of wellbore stability for horizontal wells in stratification shale[J]. Journal of Central South University (Science and Technology),2015,46(4):1375−1383.
|
| [2] |
贾立龙,舒建生,姜在炳,等. 黔西海陆过渡相煤系页岩气成藏条件及储层特征研究[J]. 煤炭科学技术,2021,49(10):201−207. doi: 10.13199/j.cnki.cst.2021.10.027
JIA Lilong,SHU Jiansheng,JIANG Zaibing et al. Study on formation conditions and reservoir characteristics of marine-terrigenous facies coal measures shale gas in western Guizhou[J]. Coal Science and Technology,2021,49(10):201−207. doi: 10.13199/j.cnki.cst.2021.10.027
|
| [3] |
肖志强,贾善坡,亓宪寅,等. 流-固-化耦合条件下硬脆性泥页岩井壁渐进破坏效应探讨[J]. 中南大学学报(自然科学版),2019,50(10):2464−2480.
XIAO Zhiqiang,JIA Shanpo,QI Xianyin,et al. Hydraulic-mechanical-chemical coupling evaluation for progressive failure of hard brittle shale wellbore[J]. Journal of Central South University (Science and Technology),2019,50(10):2464−2480.
|
| [4] |
ZHANG Q,JIA W,FAN X,et al. A review of the shale wellbore stability mechanism based on mechanical–chemical coupling theories[J]. Petroleum,2015,1(2):91−96. doi: 10.1016/j.petlm.2015.06.005
|
| [5] |
TALAL A L B. The impact of water content and ionic diffusion on the uniaxial compressive strength of shale[J]. Egyptian Journal of Petroleum,2013,22(2):249−260. doi: 10.1016/j.ejpe.2013.06.004
|
| [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] |
DOKHANI V, YU M, MISKA S Z, et al. Effects of adsorptive characteristics of shale on wellbore stability[C]//49th US Rock Mechanics/ Geomechanics Symposium. OnePetro, 2015.
|
| [8] |
卢运虎,陈 勉,金 衍,等. 钻井液浸泡下深部泥岩强度特征试验研究[J]. 岩石力学与工程学报,2012,31(7):1399−1405. doi: 10.3969/j.issn.1000-6915.2012.07.012
LU Yunhu,CHEN Mian,JIN Yan,et al. Experimental study of strength properties of deep mudstone under drilling fluid soaking[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(7):1399−1405. doi: 10.3969/j.issn.1000-6915.2012.07.012
|
| [9] |
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.
YAN Chuanliang,DENG Jingen,YU Baohua,et al. Research on collapsing pressure of gas shale[J]. Chinese Journal of Rock Mechanics and Engineering,2013,32(8):1595−1602.
|
| [10] |
ZHEN G F, JING G L, HU W J, et al. The research of the oil base drilling fluid hard brittle shale sidewall instability mechanism[C]//Applied Mechanics and Materials, 2014.
|
| [11] |
康毅力,佘继平,林 冲,等. 钻井完井液浸泡弱化页岩脆性机制[J]. 力学学报,2016,48(3):730−738. doi: 10.6052/0459-1879-15-286
KANG Yili,SHE Jiping,LIN Chong,et al. Brittleness weakening mechanisms of shale soaked by drilling & completion fluid[J]. Chinese Journal of Theoretical and Applied Mechanics,2016,48(3):730−738. doi: 10.6052/0459-1879-15-286
|
| [12] |
梁大川,王 林. 钻井液和泥页岩间的传递作用对井壁稳定的影响[J]. 天然气工业,1999,3:71−73, 9−10.
LIANG Dachuan,WANG Lin. Influence of transfer between drilling fluid and shale on wellbore stability[J]. Natural Gas Industry,1999,3:71−73, 9−10.
|
| [13] |
刘厚彬,崔 帅,朱达江,等. 硬脆性页岩微细观组构及力学性能研究[J]. 地下空间与工程学报,2019,15(S1):34−39.
LIU Houbin,CUI Shuai,ZHU Dajiang,et al. Study on microstructure and mechanical properties of hard brittle shale[J]. Chinese Journal of Underground Space and Engineering,2019,15(S1):34−39.
|
| [14] |
李贤胜,刘向君,梁利喜,等. 层理性页岩声波各向异性校正方法研究[J]. 油气藏评价与开发,2020,10(5):49−54, 62.
LI Xiansheng,LIU Xiangjun,LIANG Lixi,et al. Correction methods for acoustic anisotropy of bedding shale[J]. Petroleum Reservoir Evaluation and Development,2020,10(5):49−54, 62.
|
| [15] |
梁利喜,庄大琳,刘向君,等. 龙马溪组页岩的力学特性及破坏模式研究[J]. 地下空间与工程学报,2017,13(1):108−116.
LIANG Lixi,ZHUANG Dalin,LIU Xiangjun,et al. Study on mechanical properties and failure modes of longmaxi shale[J]. Chinese Journal of Underground Space and Engineering,2017,13(1):108−116.
|
| [16] |
万有维,熊 健,刘向君,等. 钻井液浸泡对巴西改组岩石声学特性的影响[J]. 断块油气田,2020,27(4):517−521.
WAN Youwei,XIONG Yian,LIU Xiangjun,et al. The influence of drilling fluid soaking on rock acoustic characteristics in Baxigai Formation[J]. Fault-Block Oil & Gas Field,2020,27(4):517−521.
|
| [17] |
LYU Q,LONG X,RANJITH P G,et al. Experimental investigation on the mechanical behaviours of a low-clay shale under water-based fluids[J]. Engineering Geology,2018,233:124−138. doi: 10.1016/j.enggeo.2017.12.002
|
| [18] |
黄智刚,左清军,吴 立,等. 水岩作用下泥质板岩软化非线性机制研究[J]. 岩土力学,2020,41(9):2931−2942. doi: 10.16285/j.rsm.2020.0105
HUANG Zhigang,ZUO Qingjun,WU Li,et al. Nonlinear softening mechanism of argillaceous slate under water-rock interaction[J]. Rock and Soil Mechanics,2020,41(9):2931−2942. doi: 10.16285/j.rsm.2020.0105
|
| [19] |
凌斯祥,巫锡勇,孙春卫,等. 水岩化学作用对黑色页岩的化学损伤及力学劣化试验研究[J]. 实验力学,2016,31(4):511−524. doi: 10.7520/1001-4888-15-241
LING Sixiang,WU Xiyong,SUN Chunwei,et al. Experimental study of chemical damage and mechanical deterioration of black shale due to water-rock chemical action[J]. Journal of Experimental Mechanics,2016,31(4):511−524. doi: 10.7520/1001-4888-15-241
|
| [20] |
SUN L, ZHANG Y, QIN Z, et al. A damage constitutive model of rock under hydrochemical cyclic invasion[J]. Advances in Civil Engineering, 2020, 2020.
|
| [21] |
贾利春, 刘殿琛, 张家振. 钻井液浸泡页岩动、静态弹性力学参数试验研究[C]//第32届全国天然气学术年会(2020)论文集. 重庆: 中国学术期刊电子出版社, 2020.
JIA Lichun, LIU Dianchen, ZHANG Jiazhen. Experimental study on the dynamic and static elastic parameters of shale under drilling fluid environment[C]//The 32nd National Natural Gas Academic Annual Conference(2020). Chongqing: China Academic Journal Electronic Publishing House, 2020.
|
| [22] |
CHANGHAO W,LING Z,SHIBIN L,et al. Time-Sensitive Characteristics of Bedding Shale Deterioration under the Action of Drilling Fluid[J]. Lithosphere,2022,2022(Special 12):3019090.
|
| [23] |
JIANG J,HOU Z M,HOU K P,et al. The damage constitutive model of sandstone under water-rock coupling[J]. Geofluids,2022,2022:1731254.
|
| [24] |
ZHANG Q S,YANG G S,REN J X. New study of damage variable and constitutive equation of rock[J]. Chinese Journal of Rock Mechanics and Engineering,2003,22(1):30−34.
|
| [25] |
MIAO S,WANG H,CAI M,et al. Damage constitutive model and variables of cracked rock in a hydro-chemical environment[J]. Arabian Journal of Geosciences,2018,11(2):1−14.
|
| [26] |
BIAN K,LIU J,ZHANG W,et al. Mechanical behavior and damage constitutive model of rock subjected to water-weakening effect and uniaxial loading[J]. Rock Mechanics and Rock Engineering,2019,52(1):97−106. doi: 10.1007/s00603-018-1580-4
|
| [27] |
WANG W,DENG J,YU B,et al. Coupled effects of stress damage and drilling fluid on strength of hard brittle shale[J]. Journal of Central South University,2016,23(12):3256−3261. doi: 10.1007/s11771-016-3391-7
|
| [28] |
罗 鸣,高德利,黄洪林,等. 钻井液对页岩力学特性及井壁稳定性的影响[J]. 石油钻采工艺,2022,44(6):693−700.
LUO Ming,GAO Deli,HUANG Honglin,et al. Effects of drilling fluids on shale mechanical properties and wellbore stability[J]. Oil Drilling & Production Technology,2022,44(6):693−700.
|
| 1. |
贠建林，袁进科，王胜，李伟，赵军学，刘昕伟. 纳米硅基微泡沫钻井液的研制及应用效果分析. 矿业研究与开发. 2025(02): 116-122 .
| |
| 2. |
周文龙，荣传新，程桦，王宗金，姚直书. 白垩侏罗系地层钻井法凿井钻井液黏度突变致因分析. 建井技术. 2024(01): 56-64 .
| |
| 3. |
贾东林，闫海建，黄小峰，夏海英，樊建建. 页岩储层防水锁聚合物水基钻井液体系研究. 当代化工. 2024(03): 631-635 .
| |
| 4. |
刘鹏林，李军，连威，席岩，刘献博，王典. 浸泡条件下页岩力学及摩擦特征实验. 断块油气田. 2024(04): 734-739 .
| |
| 5. |
田书广. 煤岩组合体单侧限力学性能与能量演化规律及损伤本构研究. 矿业研究与开发. 2024(09): 64-73 .
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: