CO_(2)与液相解堵剂协同机制及其在凝析气藏中的碳储存性能  

Synergistic Mechanism of CO_(2)and Liquid Phase De-Blocking Agent and Their Performance of Carbon Storage in Condensate Gas Reservoirs

作　　者：杨海烽 于海洋 王同兵 黄晓明 王崧洋 曾华柯 黄涛 汪洋[1] YANG Haifeng;YU Haiyang;WANG Tongbing;HUANG Xiaoming;WANG Songyang;ZENG Huake;HUANG Tao;WANG Yang(State Key Laboratory of Petroleum Resources and Engineering,Beijing 102249,China;PetroChina Southwest Oil&Gasfield Company,Chongqing 408399,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油西南油气田公司,重庆408399

出　　处：《华南师范大学学报(自然科学版)》2025年第1期22-29,共8页Journal of South China Normal University(Natural Science Edition)

基　　金：国家重点研发计划项目(2023YFF0614100);国家自然科学基金项目(52074317);中石油集团重大专项(2021ZZ01-03)。

摘　　要：通过探究凝析气藏注CO_(2)、液相解堵剂和溶解CO_(2)的液相解堵剂对反凝析和水锁污染的解堵效果,研究了CO_(2)与液相解堵剂在凝析气藏中协同解堵及碳埋存的机理。结果表明:在12 MPa,100℃条件下,CO_(2)与凝析油无法实现混相,在储层污染解除实验中的渗透率恢复率为30.54%。将CO_(2)溶解在液相解堵剂中使用时,溶解CO_(2)的液相解堵剂在储层污染解除实验中的渗透率恢复率达到74.38%,解堵效果显著增强。凝析气藏注CO_(2)解堵方式下,CO_(2)埋存率为92.75%。在注入溶解CO_(2)的液相解堵剂解堵方式下,CO_(2)埋存率为98.47%。CO_(2)传质过程中,能够溶解在地层水和凝析油中,实现碳封存。溶解CO_(2)的液相解堵剂能够结合CO_(2)与化学解堵剂的优势,显著提高解堵效果,而且还能在解堵过程中实现CO_(2)的有效埋存,兼顾了提高采收率与碳中和的需求。研究结果为凝析气藏的高效开发提供了新的技术思路。The effects of injecting CO_(2),liquid phase de-blocking agents,and CO_(2)-dissolved liquid phase de-blocking agents on the removal of condensate and water block pollution in condensate gas reservoirs were investigated.The research emphasized the mechanisms of synergistic de-blocking and carbon storage involving CO_(2)and li-quid phase de-blocking agents in these reservoirs.The results show that under conditions of 12 MPa and 100℃,CO_(2)is not miscible with condensate oil,resulting in a permeability recovery rate of 30.54%in reservoir pollution removal experiments.In contrast,when CO_(2)is dissolved in a liquid phase de-blocking agent,the permeability recovery rate significantly increases to 74.38%,demonstrating enhanced de-blocking effectiveness.In the process of CO_(2)injection for de-blocking,the CO_(2)storage rate is 92.75%;however,when using CO_(2)-dissolved liquid phase de-blocking agents,the CO_(2)storage rate reaches 98.47%.During the mass transfer of CO_(2),it can dissolve in formation water and condensate oil,facilitating carbon storage.The CO_(2)-dissolved liquid phase de-blocking agent combines the advantages of CO_(2)and chemical de-blocking agents,significantly improving de-blocking effectiveness while also enabling effective CO_(2)storage.This approach addresses the need for enhanced gas recovery and carbon neutrality.The results of the research provide new technical perspective for the efficient development of condensate gas reservoirs.

关 键 词：凝析气藏 CO_(2)协同解堵 碳埋存 储层污染 

分 类 号：TE372[石油与天然气工程—油气田开发工程]