油气藏评价与开发 >
2021 , Vol. 11 >Issue 3: 395 - 403
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2021.03.015
气藏型储气库储层损害机理与保护技术对策
收稿日期: 2021-01-04
网络出版日期: 2021-06-24
基金资助
四川省科技厅项目“非常规油气层保护四川省青年科技创新研究团队”(2021JDTD0017)
Formation damage mechanism and protection measures for gas field storage
Received date: 2021-01-04
Online published: 2021-06-24
储气库工程地质条件复杂,具有储层低压、交变载荷、高强度注采等特点,钻完井和多周期注采过程容易诱发储层损害,严重制约储气库高效建库和注采效率,给储气库平稳安全供气带来了极大挑战。通过分析气藏型储气库工程地质特征,结合实际储层损害控制案例,揭示了气藏型储气库钻完井及注采过程储层损害机理,提出了储气库储层保护技术对策。气藏型储气库钻完井液漏失,易诱发固相侵入、流体敏感、应力敏感等损害,多周期强注强采易诱发应力敏感、微粒运移和出砂等损害。储气库储层保护需要提前战略规划、强化系统工程观、升级完善全生命周期储层保护及其配套技术,储层损害预测、诊断、控制与解除技术既要考虑储气库建设运行阶段,又要考虑气田开发阶段,尽快研发以钻完井和多周期注采过程储层保护为基础的储气库地质工程一体化技术。
游利军 , 孟森 , 康毅力 , 陈明君 , 邵佳新 . 气藏型储气库储层损害机理与保护技术对策[J]. 油气藏评价与开发, 2021 , 11(3) : 395 -403 . DOI: 10.13809/j.cnki.cn32-1825/te.2021.03.015
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.
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