气藏压裂水平井温度剖面物理模拟实验  

Physical Simulation Experiment on Temperature Profile of Fractured Horizontal Well in Gas Reservoir

作　　者：李海涛[1] 郭振华 罗红文 向雨行 刘为明 艾莹 LI Hai-tao;GUO Zhen-hua;LUO Hong-wen;XIANG Yu-xing;LIU Wei-ming;AI Ying(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;Shengli Petroleum Administration Bureau Co., Ltd., SINOPEC, Dongying 257002, China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]中国石化集团胜利石油管理局有限公司,东营257002

出　　处：《科学技术与工程》2021年第33期14133-14138,共6页Science Technology and Engineering

基　　金：“十三五”国家科技重大专项(2016ZX05021-005-009HZ)。

摘　　要：针对气藏压裂水平井各级裂缝参数差异较大所导致的温度剖面无规律、产出剖面解释困难等问题,设计了一套基于分布式光纤传感(distributed temperature sensing,DTS)技术的水平井物理模拟实验装置,开展了温度剖面物理模拟实验研究,探究了裂缝导流能力对温度剖面的影响规律。实验结果表明:随着裂缝导流能力的增大,产量增大,温度剖面整体下降,裂缝位置处的温降与对应裂缝的导流能力基本呈正相关;气藏储层渗透率增大时,温度剖面整体下降。据此还提出了一种基于DTS温度剖面实验数据实现快速定位、识别高产裂缝的方法。为实现基于DTS的气藏压裂水平井裂缝诊断及产出剖面解释提供实验依据。Aiming at the problems of irregular temperature profile and difficulty in interpretation of production profile caused by the large difference of fracture parameters at all levels of fractured horizontal wells in gas reservoirs,a set of horizontal well physical simulation experiment device based on distributed temperature sensing(DTS)technology was designed,physical simulation experiment of temperature profile was carried out,and the influence of fracture conductivity on temperature profile was explored.The experimental results show that as the fracture conductivity increases,the output increases,the temperature profile decreases overall,the temperature drop at the fracture location is basically positively correlated with the corresponding fracture conductivity.When the permeability of the gas reservoir increases,the temperature profile decreases as a whole.A method to quickly locate and identify high-yield cracks based on the experimental data of the DTS temperature profile was also proposed.The study provides experimental basis for fracture diagnosis and production profile interpretation of fractured horizontal wells in gas reservoirs based on DTS.

关 键 词：分布式光纤传感(DTS) 温度剖面 裂缝导流能力 实验模拟 

分 类 号：TE357[石油与天然气工程—油气田开发工程]