王庄油田强水敏油藏粘土矿物危害研究
Damage study of clay mineral in high water sensitivity Wangzhuang oil field
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摘要: 强水敏油藏指储层遇到外来流体后,渗透率的下降幅度超过70%的油藏.该类油藏由于渗透率的大幅下降,导致注水、注汽等地层能量补充困难,开发效果不理想.目前国内外对储层敏感性机理研究逐渐从试验走向实践,并形成了一套系统的储层敏感性试验研究方法,但敏感性油藏的开发始终未取得较大的突破,其重要原因就是粘土矿物伤害储层.笔者以王庄油田强水敏性油藏为例,对粘土矿物危害进行探讨.Abstract: The High water sensitivity reservioir is that the permeability declines exceed 70% when outside liquid enters formation.The development of this type reservioirs is always not good for difficulties to supply the energy by injection water or steam caused by permeability declining dramatically.In present the sensitivity mechanism of formation are applied gradually from experiment to oil field and a set systemic experiment investigation methods about sensitivity formation are formed,but the successful development of the sensitivity reservoirs don't get breakthrough for the formation damage of clay mineral.In this paper Wangzhuang oil field is used as a case of high water sensitivity reservoir to investigate the damage of clay mineral.
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Key words:
- Wangzhuang oil field /
- high water sensitivity /
- heavy oil reservoir /
- clay mineral /
- formation damage
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