气藏型储气库注气期试井分析探讨

刘晓旭; 周源; 王霞; 罗鑫; 周道勇

doi:10.3969/j.issn.1006-6535.2021.02.021

特种油气藏 >

2021 , Vol. 28 >Issue 2: 139 - 143

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.02.021

油藏工程

气藏型储气库注气期试井分析探讨

刘晓旭 ,
周源 ,
王霞 ,
罗鑫 ,
周道勇

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中国石油西南油气田分公司,四川成都 610041

刘晓旭(1976—),男,高级工程师,2000年毕业于西南石油学院石油工程专业,2005年毕业于西南石油大学油气田开发专业,获博士学位,现从事地下储气库地质与气藏工程研究工作。

收稿日期: 2019-09-24

修回日期: 2020-11-10

网络出版日期: 2022-02-16

基金资助

中国石油重大科技专项“地下储气库关键技术研究与应用”(2015E-4002)

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Analysis and Discussion on Well Test of Gas Field Storage Facility in Gas Injection Period

Liu Xiaoxu ,
Zhou Yuan ,
Wang Xia ,
Luo Xin ,
Zhou Daoyong

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PetroChina Southwest Oil and Gasfield Company, Chengdu, Sichuan 610041, China

Received date: 2019-09-24

Revised date: 2020-11-10

Online published: 2022-02-16

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摘要

针对气藏型储气库注采井注采过程中储层物性参数影响因素不明确、注采能力不对称的问题。基于相国寺储气库井下连续油管试井测试结果,提出储气库注气期“温降效应”、“变表皮效应”的概念,分析了储气库注采过程中温降效应、变表皮效应以及储层应力敏感对注采的影响。通过气藏型储气库注气期试井分析技术,研究各因素在试井曲线上的响应特征以及对试井解释参数的影响。结果表明:①相对于采气期试井测试,注气期测试得到的储层物性参数具有同样的参考价值;②储气库温降效应对于试井解释结果的影响可忽略不计,而在不同注采运行周期内,变表皮效应以及应力敏感效应影响差异较大;③编制储气库注采运行方案时应充分考虑变表皮效应与应力敏感的影响,在不同注采运行周期内开展试井测试获取准确的储层参数值。研究成果为储气库试井测试与解释提供了重要的研究依据和理论指导。

关键词： 储气库; 试井分析; 温降效应; 表皮系数; 应力敏感; 渗流特征; 相国寺储气库

本文引用格式

刘晓旭 , 周源 , 王霞 , 罗鑫 , 周道勇 . 气藏型储气库注气期试井分析探讨[J]. 特种油气藏, 2021 , 28(2) : 139 -143 . DOI: 10.3969/j.issn.1006-6535.2021.02.021

Abstract

In view of the unclear and inadequate basis for the preparation of gas injection scheme for gas field storage facility, based on the well test results of downhole coiled tubing of Xiangguosi gas storage facility, the concept of "temperature drop effect" and "variable skin effect" in gas injection period of the gas storage facility was proposed, and the influence of temperature drop effect, variable skin effect and reservoir stress sensitivity on injection and production in the injection and production of gas storage facility was analyzed. With the technology of analyzing the well test in injection period of gas field storage facility, the response characteristics of various factors on the well test curve and the influence on the well test interpretation parameters were studied. The results show that: ①Compared with the well test during the gas production period, the reservoir physical parameters obtained during the gas injection period have the same reference value; ②the temperature drop effect of gas storage facility has a negligible influence on the well test interpretation results, while the influence of variable skin effect and stress sensitivity effect varies greatly in different injection, production and operation periods; ③the influence of variable skin effect and stress sensitivity should be fully considered when preparing the injection, production and operation scheme of the gas storage facility, and well test should be conducted in different injection, production and operation periods to obtain accurate reservoir parameter values. The study results provide important study basis and theoretical guidance for the well test and interpretation of gas storage facility.

Key words： gas storage facility; well test analysis; temperature drop effect; skin coefficient; stress sensitivity; seepage characteristics; Xiangguosi gas storage facility

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