Citation: | WU Zhiying, LU Baoping, HU Yafei, JIANG Tingxue. Experimental Study on the Physical Simulation of Dynamic Sand Transport in Multi-Stage Fractures[J]. Petroleum Drilling Techniques, 2020, 48(4): 106-110. DOI: 10.11911/syztjs.2020093 |
To study the dynamic sand transportation and distribution patterns of proppant within fractures during hydraulic fracturing, an experimental device simulating sand transport in fracture systems with multi-scale was self-developed. This included carrying out an experimental study on dynamic sand transportation law and proppant height distribution patterns within fractures of different sizes under different frac fluid viscosity, proppant type, pumping flow rate and proppant concentration. The experimental results showed that the viscosity of frac fluid is the most influential factor followed by particle size of the proppant, proppant concentration and flow rate. The higher the viscosity of fracturing fluid, the less proppant settlement, and the lower and the gentler the settled proppant bank profile. This is more obvious in main fractures. The larger the particle size of the proppant, the more the settled proppant, the higher the settled proppant bank profile. It is more obvious in main fractures, too. Similarly, the higher the proppant concentration, the more the settled proppant, and the higher the settled proppant bank profile. This change is even more notable in branched fractures. The higher the flow rate, the slightly less the settled proppant. Further, it is almost the same in branched fractures. The research results will provide a theoretical basis for the optimization of frac fluid, proppant, and fracturing operation parameters as well as a formulating fracturing scheme.
[1] |
MICHAELIDES E E. Hydrodynamic force and heat/mass transfer from particles, bubbles, and drop: the Freeman scholar lecture[J]. Journal of Fluids Engineering, 2003, 125(2): 209–238. doi: 10.1115/1.1537258
|
[2] |
侯腾飞,张士诚,马新仿,等. 支撑剂沉降规律对页岩气压裂水平井产能的影响[J]. 石油钻采工艺, 2017, 39(5): 638–645.
HOU Tengfei, ZHANG Shicheng, MA Xinfang, et al. Effect of proppant settlement laws on the productivity of shale-gas horizontal wells after the fracturing[J]. Oil Drilling & Production Technology, 2017, 39(5): 638–645.
|
[3] |
温庆志,翟恒立,罗明良,等. 页岩气藏压裂支撑剂沉降及运移规律实验研究[J]. 油气地质与采收率, 2012, 19(6): 104–107. doi: 10.3969/j.issn.1009-9603.2012.06.025
WEN Qingzhi, ZHAI Hengli, LUO Mingliang, et al. Study on proppant settlement and transport rule in shale gas fracturing[J]. Petroleum Geology and Recovery Efficiency, 2012, 19(6): 104–107. doi: 10.3969/j.issn.1009-9603.2012.06.025
|
[4] |
李靓. 压裂缝内支撑剂沉降和运移规律实验研究[D]. 成都: 西南石油大学, 2014.
LI Liang. Experimental study on proppant settlement and migration in pressure fracture[D]. Chengdu: Southwest Petroleum University, 2014.
|
[5] |
温庆志,段晓飞,战永平,等. 支撑剂在复杂缝网中的沉降运移规律研究[J]. 西安石油大学学报(自然科学版), 2016, 31(1): 79–84. doi: 10.3969/j.issn.1673-064X.2016.01.013
WEN Qingzhi, DUAN Xiaofei, ZHAN Yongping, et al. Study on settlement and migration law of proppant in complex fracture network[J]. Journal of Xi’an Shiyou University (Natural Science Edition), 2016, 31(1): 79–84. doi: 10.3969/j.issn.1673-064X.2016.01.013
|
[6] |
狄伟. 支撑剂在裂缝中的运移规律及铺置特征[J]. 断块油气田, 2019, 26(3): 355–359.
DI Wei. Migration law and placement characteristics of proppant in fractures[J]. Fault-Block Oil & Gas Field, 2019, 26(3): 355–359.
|
[7] |
MALHOTRA S, SHARMA M M. Settling of spherical particles in unbounded and confined surfactant-based shear thinning viscoelastic fluids: an experimental study[J]. Chemical Engineering Science, 2012, 84: 646–655. doi: 10.1016/j.ces.2012.09.010
|
[8] |
温庆志,胡蓝霄,翟恒立,等. 滑溜水压裂裂缝内砂堤形成规律[J]. 特种油气藏, 2013, 20(3): 137–139.
WEN Qingzhi, HU Lanxiao, ZHAI Hengli, et al. Formation law of sand dike in fracture by slick water fracturing[J]. Special Oil & Gas Reservoir, 2013, 20(3): 137–139.
|
[9] |
周德胜,张争,惠峰,等. 滑溜水压裂主裂缝内支撑剂输送规律实验及数值模拟[J]. 石油钻采工艺, 2017, 39(4): 499–508.
ZHOU Desheng, ZHANG Zheng, HUI Feng, et al. Experiment and numerical simulation on transportation laws of proppant in major fracture during slick water fracturing[J]. Oil Drilling & Production Technology, 2017, 39(4): 499–508.
|
[10] |
陈勉,葛洪魁,赵金洲,等. 页岩油气高效开发的关键基础理论与挑战[J]. 石油钻探技术, 2015, 43(5): 7–14.
CHEN Mian, GE Hongkui, ZHAO Jinzhou, et al. The key fundamentals for the efficient exploration of shale oil and gas and its related challenges[J]. Petroleum Drilling Techniques, 2015, 43(5): 7–14.
|
[11] |
陈冬,王楠哲,叶智慧,等. 压实与嵌入作用下压裂裂缝导流能力模型建立与影响因素分析[J]. 石油钻探技术, 2018, 46(6): 82–89.
CHEN Dong, WANG Nanzhe, YE Zhihui, et al. Propped fracture conductivity evolution under a combination of compaction and embedment: establishing a model and analyzing the influencing factors[J]. Petroleum Drilling Techniques, 2018, 46(6): 82–89.
|
[12] |
NGAMENI K L, MISKIMINS J L, ABASS H H, et al. Experimental study of proppant transport in horizontal wellbore using fresh water[R]. SPE 184841, 2017.
|
[13] |
刘建坤,吴峙颖,吴春方,等. 压裂液悬砂及支撑剂沉降机理实验研究[J]. 钻井液与完井液, 2019, 36(3): 378–383. doi: 10.3969/j.issn.1001-5620.2019.03.020
LIU Jiankun, WU Zhiying, WU Chunfang, et al. Experiment study on the mechanisms of sand suspension and settling of proppant in fracturing fluids[J]. Drilling Fluid & Completion Fluid, 2019, 36(3): 378–383. doi: 10.3969/j.issn.1001-5620.2019.03.020
|
[14] |
吴春方,刘建坤,蒋廷学,等. 压裂输砂与返排一体化物理模拟实验研究[J]. 特种油气藏, 2019, 26(1): 142–146.
WU Chunfang, LIU Jiankun, JIANG Tingxue, et al. Integrated physical modeling experiment research on sand transport and backflow in fracturing[J]. Special Oil & Gas Reservoirs, 2019, 26(1): 142–146.
|