微地震监测在油气藏型储气库地质体完整性评价中的应用

doi:10.13810/j.cnki.issn.1000-7210.2023.04.016

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Abstract Underground gas storage(UGS) in oil-gas fields is an underground gas storage space reconstructed from depleted oil and gas reservoirs, and it is the most important type of gas storage. Compared with foreign UGS in oilgas fields, domestic UGS geological bodies are mostly complex fault blocks with deep burial, poor reservoir permeability, and strong heterogeneity. The unique and complicated geological conditions in China pose great challenges to the safe operation of UGS geological bodies. Microseismic monitoring technology can monitor the rock fracture in real time and is the most direct monitoring approach for the geological body activities of UGS. Therefore, based on the principle of microseismic monitoring and the definition of geological body integrity of UGS, this paper studies the data processing method according to the characteristics of microseismic monitoring data of UGS. Taking Hutubi UGS in Xinjiang as an example, this paper carries out microseismic monitoring data processing and interpretation and evaluates its UGS geological body integrity. The results are as follows:① Microseismic monitoring technology plays an important role in ensuring the geological body safety of UGS and can monitor rock fracture activities of faults, cap rocks, and bottom rock in real time. ② During the study period, the UGS geological body of Hutubi is relatively stable, and there is no obvious aggregation of microseismic events and the occurrence of large magnitude microseismic events near the reservoir depth, but it still needs long-term monitoring. ③Microseismic monitoring can realize three-dimensional monitoring and has a wider monitoring range and richer monitoring information than conventional monitoring methods.

Key words： microseismic monitoring geological body for underground gas storage fault cap rock underground gas storage in oil-gas fields

Received: 31 August 2022

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P631

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	Articles by authors
	LIAO Wei
	WEI Lulu
	LUO Haitao
	ZHANG Shijie
	XU Gang
	CHEN Long

Cite this article:

LIAO Wei,WEI Lulu,LUO Haitao等. Application of microseismic monitoring in evaluation of geological body integrity for UGS in oil-gas fields[J]. OGP, 2023, 58(4): 913-921.

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http://www.ogp-cn.com/EN/10.13810/j.cnki.issn.1000-7210.2023.04.016 OR http://www.ogp-cn.com/EN/Y2023/V58/I4/913

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