Reservoir Evaluation and Development ›› 2021, Vol. 11 ›› Issue (3): 395-403.doi: 10.13809/j.cnki.cn32-1825/te.2021.03.015

• Integration Evaluation and Development • Previous Articles     Next Articles

Formation damage mechanism and protection measures for gas field storage

YOU Lijun(),MENG Sen,KANG Yili,CHEN Mingjun,SHAO Jiaxin   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2021-01-04 Online:2021-06-22 Published:2021-06-24

Abstract:

The gas storage, with complex engineering geological conditions, has the characteristics of low formation pressure, alternating load and high intensity injection-recovery. The process of drilling, completion and injection-recovery can easily induce the formation damage, which seriously restricts the high efficient construction and injection-recovery efficiency of gas storage, and brings great challenges to the stable and safe gas supply of gas storage. Based on the analysis of the engineering geological characteristics of the gas storage, and combined with the actual formation damage control cases, the formation damage mechanism of the gas storage in the process of drilling, completion and injection-recovery has been revealed, and the technical countermeasures for the formation damage control of the gas storage has been put forward. The loss of drilling and completion fluid in gas formation is easy to induce solid invasion, fluid sensitivity, stress sensitivity and other damages, and the multi cycle strong injection-recovery is easy to induce stress sensitivity, particle migration, sand production and other damages. Formation damage control of gas storage requires strategic planning in advance, strengthening the concept of system engineering, upgrading and improving the whole life cycle reservoir protection and its supporting technology. Not only the construction and operation stage of gas storage, but also the development stage of gas field should be considered in the formation damage prediction, diagnosis, control and relief technology. Gas storage geology-engineering integration technology based on drilling and completion and multi cycle injection-recovery process should be researched and developed as soon as possible.

Key words: gas storage, loss of fluid, multi cycle operation, systems engineering, formation damage control, geology-engineering integration

CLC Number: 

  • TE822