煤矿井下水力加砂压裂泵关键参数研究  

Key parameters of hydraulic sand fracturing pump in coal mine

作　　者：赵继展 ZHAO Jizhan(Xi’an Research Institute(Group)Co.,Ltd.,China Coal Technology and Engineering Group,Xi’an 710054,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710054

出　　处：《煤炭工程》2023年第3期151-155,共5页Coal Engineering

基　　金：中煤科工集团西安研究院有限公司科技创新基金项目(2017XAYZD06,2020XAYDC04-05)。

摘　　要：为给煤矿井下加砂压裂泵组研发设计提供科学可依的关键技术参数,通过煤矿井下作业空间特点研究分析,提出分体模块、串式布置的井下加砂压裂泵组布局设计,给出了分体模块加砂压裂泵组的外形控制参数;通过煤矿井下的供水、供电条件系统分析,确定了煤矿井下加砂压裂泵组水电能力的上限;通过我国多省份矿区煤层破裂压力综合研究,基于注水压裂破岩原理和压裂泵做功原理进行分析,提出加砂压裂泵输出压力和排量的理论预设值,并通过压裂泵功率测算、管道携砂流动物理试验和裂缝铺砂数值模拟试验,对预设值进行了校验和模拟试验验证。最终给出加砂压裂泵分体模块外型控制尺寸,高不宜超过2.0 m、宽不宜超过1.4 m,供电电压宜选用1140 V或3300 V,泵组输出压力不应小于30 MPa,输出排量适宜区间为1~1.5 m^(3)/min等关键技术参数的适宜取值。In order to provide scientific and reliable technical parameters for the design and development of underground sand fracturing pump group in coal mine,through analyzing the characteristics of underground working space in coal mine,the design idea of underground sand fracturing pump group with split module and string arrangement is proposed,and the shape control parameters of split module sand fracturing pump group are given.Through the systematic analysis of the water and power supply conditions in the coal mine,the upper limit of the hydropower capacity of the sand fracturing pump group in the coal mine is defined.The fracture pressure of coal seams in mining areas of many provinces in China is statistically studied.Based on the analysis of the rock breaking principle of water injection fracturing and the work principle of fracturing pump,the preset values of the output pressure and displacement of sanding fracturing pump are proposed,and the preset values are checked and verified by simulation test through the calculation of fracturing pump power,physical test of pipeline sand carrying flow and numerical simulation test of fracture sand spreading.Finally,the control dimension of the split module of the sand fracturing pump applicable to the underground coal mine is finally obtained,it is recommended that,the height is within 2.0 m,the width is within 1.4 m,the power supply voltage is 1140 V or 3300 V,and the reasonable range of output displacement is 1~1.5 m^(3)/min;meanwhile,the operating pressure of the pump unit should not be less than 30 MPa.

关 键 词：加砂压裂泵 输出压力 输出排量 管道携砂 裂缝铺砂 

分 类 号：TD265.4[矿业工程—矿井建设]