摘要
支撑剂性能对非常规油气储层水力压裂设计至关重要,少有学者进行支撑剂微观性能参数粒度粒形方面的研究。通过室内试验模拟页岩气储层生产过程中支撑剂破碎率及裂缝导流能力的变化规律,定量表征粒度粒形对支撑剂破碎率及裂缝导流能力的影响。结果表明:当闭合压力低于28 MPa,相同类型粒径均匀分布集中、平均圆球度高的支撑剂与分选性差的支撑剂对比,破碎率下降约15%并且裂缝导流能力提升约10%;当闭合压力超过支撑剂的抗压强度,由于支撑剂破碎产生的碎屑进一步堵塞导流通道,分选性好的支撑剂能更好地维持裂缝导流能力。实验结果为现场压裂设计页岩地层压裂设计,入井材料质量管控水平提升及支撑剂优选提供参考。
Proppant performance is very important to the hydraulic fracturing design of unconventional oil and gas reservoirs.Few scholars have studied the micro performance parameters of proppant in terms of particle size and shape.The effect of particle size and shape on proppant breakage rate and fracture conductivity in shale gas reservoir was quantitatively characterized through laboratory experiments.The results show that when the closing pressure is lower than 28 MPa,the same type of proppant with uniform particle size and high spherical degree is compared with the proppant with poor sorting,the crushing rate is reduced by 15%and the fracture conductivity is increased by 10%.When the closing pressure exceeds the compressive strength of the proppant,the well-separated proppant can maintain the fracture conductivity better as the flow channel is further blocked by the debris generated by the broken proppant.The experimental results provide a reference for in-situ fracturing design of shale formation,improving the quality control level of downhole materials and selecting proppant.
作者
王俊亭
许冬进
陶振强
曲彦颖
吴应松
WANG Jun-ting;XU Dong-jin;TAO Zhen-qiang;QU Yan-ying;WU Ying-song(Oil Engineering College of Yangtze University,Wuhan 430100,China;Hubei Province Key Laboratory of Drilling and Production Engineering for Oil and Gas,Wuhan 430100,China)
出处
《科学技术与工程》
北大核心
2025年第9期3672-3679,共8页
Science Technology and Engineering
基金
国家自然科学基金(52004033)。
关键词
非常规油气
支撑剂
粒度粒形
破碎率
裂缝导流能力
unconventional oil and gas
proppant
particle size and shape
breakage rate
fracture conductivity
作者简介
第一作者:王俊亭(1999-),男,汉族,陕西汉中人,硕士研究生。研究方向:储层改造。E-mail:quill_wong@163.com;通信作者:许冬进(1981-),男,汉族,湖北武汉人,博士,副教授。研究方向:非常规油气开发、储层改造。E-mail:xdj1001@qq.com。
