贾石川, 胡立强, 肖智勇,等.不同因素对脉冲压力响应的影响规律研究[J].河南理工大学学报（自然科学版）,2022,41(3):152-158.

JIA S C, HU L Q, XIAO Z Y,et al.Effects of different factors on pulse pressure response[J].Journal of Henan Polytechnic University(Natural Science) ,2022,41(3):152-158.

不同因素对脉冲压力响应的影响规律研究

贾石川1, 胡立强1, 肖智勇1, 王刚1,2, 姜枫1

1.山东科技大学 山东省土木工程防灾减灾重点实验室，山东 青岛 266590;2.山东科技大学 矿山灾害预防控制省部共建国家重点实验室培育基地，山东 青岛 266590

摘要:为了研究不同因素下脉冲压力响应规律，本文采用有限差分法求解多孔可压缩介质的一维瞬态流动控制非线性偏微分方程，结合边界条件的有限差分形式和初始条件，基于MATLAB 进行编程研究。结果表明：压力平衡的时间与渗透率呈负相关关系，且随着渗透率增加，气流达到稳定状态所需时间逐渐减少；脉冲压力在大孔隙试样中将经历两个阶段：快速减少阶段和缓慢减少阶段，孔隙体积与平衡压力的大小呈负相关关系，与压力平衡的时间呈正相关关系；对于相同的上下游储层体积，平衡所需时间和平衡压力与储层体积呈正相关关系，气流达到稳定状态时间与储层体积呈负相关关系。研究结果对于深入理解非常规储层的渗透率具有理论指导意义。

关键词:有限差分法;脉冲压力响应;渗透率;孔隙度;储层体积

doi:10.16186/j.cnki.1673-9787.2020100007

基金项目:国家自然科学基金资助项目（52079077，51479108）

收稿日期:2020/10/08

修回日期:2021/02/07

出版日期:2022/05/15

Effects of different factors on pulse pressure response

JIA Shichuan1, HU Liqiang1, XIAO Zhiyong1, WANG Gang1,2,JIANG Feng1

1.Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation， Shandong University of Science and Technology， Qingdao  266590 ， Shandong， China;2.State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology， Shandong University of Science and Technology， Qingdao  266590 ， Shandong， China

Abstract: In order to study the law of pulse pressure response under different factors, the finite difference method was adopted to solve the one-dimensional transient flow nonlinear partial differential control equation of porous compressible medium. Combined with the finite difference form and initial condition of boundary conditions , the influence of parameters contained in the model on the pressure response was studied in MATLAB environment. The results showed that the time of pressure equilibrium was negatively correlated with the permeability , and with the increase of permeability , the time required for the airflow to reach a stable state decreased ; The pulse pressure would go through two stages in the macropore specimen , the rapid reduction stage and the slow reduction stage ,the pore volume was negatively correlated with the equilibrium pressure ,and the pressure equilibrium time was positively correlated;For the same upstream and downstream reservoir volume,the equilibrium time and equilibrium pressure were positively correlated with reservoir volume,and the time of airflow reaching stable state was negatively correlated with reservoir volume. The study was of theoretical significance for further understanding the permeability of unconventional reservoirs.

Key words:finite difference method;pulse pressure response;permeability;porosity;reservoir volume

不同因素对脉冲压力响应的影响规律研究_贾石川.pdf