深井分层真空抽水试验及机理分析

Deep Well Stratified Vacuum Pumping Test and the Mechanism Analysis

摘要:

基于某单井分层真空抽水综合试验，使用新型分层抽水试验装置，对试验方法进行技术改进，使分层抽水工作省时高效、安全可靠、经济实用。将该工艺方法监测数据与常规方法监测数据进行对比，研究地层、真空负压对抽水效果的影响，并对其机理进行详细分析，得出真空分层抽水井管周围渗流场的变化性状。对比试验表明，分层真空抽水工艺方法在提高单井出水量、洗井效果上具有明显优势。

Abstract:

Based on the comprehensive experiment of a single well stratified vacuum pumping, using a new stratified pumping test device, the test method was improved to make the stratified pumping work time saving and efficient, safe and reliable, economical and practical. Comparing the process monitoring data with conventional monitoring data, the influence of formation and vacuum negative pressure effect to the pumping is studied, by the detailed analysis on its mechanism, the variation characteristics of seepage field around the vacuum stratified pumping well pipe are obtained. The comparison experiment proves that this stratified vacuum pumping process has obvious advantages in improving the water yield of single well and well washing effect.