煤层气直井储层堵塞原因分析及解堵措施应用  

Analysis of Reservoir Plugging Causes in Coalbed Methane Vertical Wells and Application of Unplugging Measures

作　　者：郭晶 张建国[1] 贾慧敏[1] 王琪[1] 何珊 范秀波 GUO Jing;ZHANG Jianguo;JIA Huimin;WANG Qi;HE Shan;FAN Xiubo(Shanxi Coalbed Methane Exploration&Development Branch,PetroChina Huabei Oilfield Company,Shanxi 046000)

机构地区：[1]中石油华北油田山西煤层气勘探开发分公司,山西046000

出　　处：《中国煤层气》2024年第3期20-24,共5页China Coalbed Methane

摘　　要：针对煤层气直井储层堵塞后气量难以恢复的问题,开展了储层堵塞原因及恢复措施的研究。通过对煤层气直井储层堵塞成因及生产特征分析,将储层堵塞分为三种类型:层间干扰型、排采不连续型、井间干扰型,针对不同原因导致的储层堵塞在进行压裂车解堵时应根据各自的是适应性进行选井和施工,同时尽可能增大措施规模和排量,提高措施见效率和单井产气量。本文提供的压裂车解堵技术,能够有效解决储层堵塞问题,提高储层堵塞井单井产气量。Addressing the challenge of difficult gas production recovery following the reservoir plugging in coalbed methane vertical wells,this study investigates the causes of reservoir plugging and the unplug-ging measures.By analyzing the causes of reservoir plugging in coalbed methane vertical wells and their production characteristics,three types of blockage were identified:interlayer interference,discontinuous drainage and inter-well interference.For the reservoir plugging caused by different reasons,it is crucial to select wells and conduct operations based on the specific applicability when performing unplugging using fracturing trucks.At the same time,the injection water volume and the discharge rate should be maximized to improve the effectiveness of the measure and the gas production of individual wells.The fracturing truck unplugging technology put forward by this paper can effectively resolve the issue of reser-voir plugging and improve the gas production of reservoir-plugging wells.

关 键 词：储层堵塞 压裂车解堵 层间干扰 排采不连续 井间干扰 

分 类 号：TE375[石油与天然气工程—油气田开发工程]