[1]汪春浦,叶海峰,肖高棉.多尺度缝洞型碳酸盐岩气藏试井分析[J].油气井测试,2021,30(06):1-9.[doi:10.19680/j.cnki.1004-4388.2021.06.001]
　WANG Chunpu,YE Haifeng,XIAO Gaomian. Well test analysis of multiscale fracturevuggy carbonate gas reservoir[J].Well Testing,2021,30(06):1-9.[doi:10.19680/j.cnki.1004-4388.2021.06.001]
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多尺度缝洞型碳酸盐岩气藏试井分析()
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
30卷
期数:
2021年06期
页码:
1-9
栏目:
出版日期:
2022-01-19

文章信息/Info

Title:
 Well test analysis of multiscale fracturevuggy carbonate gas reservoir
文章编号:
1004-4388(2021)06-0001-09
作者:
 汪春浦; 叶海峰; 肖高棉
 中国石油集团川庆钻探工程有限公司地质勘探开发研究院 四川成都 610051
Author(s):
 WANG Chunpu;  YE Haifeng;  XIAO Gaomian
 Research Institute of Geological Exploration and Development, CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan 610051, China
关键词:
 ; 缝洞型气藏; 多尺度缝洞储层; 渗透率; 管流; 自由流; 数学模型; 缝洞体积法; 试井解释
Keywords:
 ; fracturevuggy gas reservoir;  multi scale fracturevuggy reservoir;  permeability;  pipe flow;  free flow;  mathematical model;  fracturevuggy volume method;  well testing interpretation
分类号:
TE344
DOI:
10.19680/j.cnki.1004-4388.2021.06.001
文献标志码:
A
摘要:
 缝洞型碳酸盐岩气藏非均质性强，具有多尺度特征，试井解释效果差，无法真实反映实际储层特征。运用裂缝渗流关系式及管流理论，引入裂缝几何参数、溶洞半径，考虑两个微裂缝系统渗透率和裂缝横截面积相关比值参数，建立多尺度缝洞型碳酸盐岩气藏试井数学模型，应用Laplace变换及Mathematica数学软件，通过Stehfest数值反演求取真实空间下井底压力解函数。利用矿场实际储层、流体及生产数据，对模型的有效性进行验证。采用该方法，对塔里木油田S4井进行解释，得到溶洞1体积为143 650 m3，裂缝1长度为12857 m，较好反映了储层结构和解释缝洞参数，解决了对于大尺度裂缝和溶洞储集空间，连续介质理论，即Saphir软件解释结果无法准确认识储层结构的问题，说明了该模型的有效性和适用性。多尺度缝洞型碳酸盐岩气藏试井分析可为预测单井动态控制储量提供理论依据。
Abstract:
 It is hardly to reflect the true characteristics of the fracturevuggy carbonate gas reservoir due to its strong heterogeneity, multiscale characteristics and poor well test interpretation performance. In this paper, the well testing mathematical model of multiscale fracturevuggy carbonate gas reservoir is established by the fracture seepage relationship and pipe flow theory introducing the fracture geometric parameters, cave radius, and the related ratio parameters of permeability and fracture crosssectional area of two micro fracture systems. In addition, the bottom hole pressure solution function in real space is obtained through Stehfest numerical inversion by using Laplace transform and Mathematica mathematical software after establishing the well testing mathematical model. The validity of the model is verified by the data of actual reservoir, fluid, and production. Well S4 in Tarim Oilfield is interpreted by this method, and the results show that the volume of karst cave 1 is 143 650 m3 and the length of fracture 1 is 12857 m. It proves that this method reflects the reservoir structure and interprets fracture cave parameters accurately, and solves the problem that the reservoir structure for largescale fracture and karst cave reservoir space cannot be accurately clarified by the continuous medium theory (the interpretation results of Saphir software), which shows the effectiveness and applicability of the model. The well testing analysis of multiscale fracturevuggy carbonate gas reservoir can provide a theoretical basis for predicting single well dynamic control reserves.

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备注/Memo

备注/Memo:
 2021-02-09收稿，2021-10-24修回,2021-11-10接受,2021-12-20网络版发表
中国石油集团川庆钻探工程有限公司-西南石油大学联合研究院2019年合作项目“苏59区块气水渗流机理及治水对策研究”（CQXN-2019-07）
汪春浦，男，1979年出生，硕士，工程师，2010年毕业于西南石油大学油气田开发工程专业，主要从事油气藏动态分析方面的研究工作。电话：028-86015020；13982251001，Email: 56780459@qq.com 。通信地址：四川省成都市成华区建设北路1段83号，邮政编码：610051。
更新日期/Last Update: 2022-04-19