| 新场气田难动用储量启动压力特征研究 |
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| 引用本文： | 黄贵存,向丽,马飞,熊昕东. 新场气田难动用储量启动压力特征研究[J]. 钻井液与完井液, 2011, 28(2) |
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| 作者姓名： | 黄贵存 向丽 马飞 熊昕东 |
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| 作者单位： | 中石化西南油气分公司工程技术研究院,四川德阳 |
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| 基金项目： | 国家重大专项《大型油气田及煤层气开发》(2008ZX05000)二级专题《四川盆地低渗气蘸储层改造工艺技术研究》 |
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| 摘 要： | 川西新场气田JS21、JS23储层品质差,属于难动用储量,储层改造过程中容易造成水锁伤害,而储层启动压力的变化能够反映外来液体水锁伤害的大小.在分析储层水锁伤害机理的基础上,通过室内实验的方法测定了新场气田JS21储层的启动压力梯度值,并对影响储层启动压力的因素,如岩心渗透率、含水饱和度、外来液体的入侵深度和性质进行了定量分析.经研究发现,渗透率的降低导致启动压力的增加,启动压力随含水饱和度的增加而增加,破胶液的滤失是造成储层水锁伤害的主要原因.提出优化压裂液配方,提高破胶液返排性能和质量是降低储层水锁伤害程度的关键措施.
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| 关 键 词： | 低孔低渗储层 难动用储量 启动压力 水锁伤害 新场气田 |
Study on Actuating Pressure of Hard-develop Reserves in Xinchang Gas Field |
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| HUANG Guicun,XIANG Li,MA Fei,XIONG Xindong. Study on Actuating Pressure of Hard-develop Reserves in Xinchang Gas Field[J]. Drilling Fluid & Completion Fluid, 2011, 28(2) |
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| Authors: | HUANG Guicun XIANG Li MA Fei XIONG Xindong |
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| Affiliation: | HUANG Guicun,XIANG Li,MA Fei,XIONG Xindong Research Center of Engineering Technology,Southwest Oilfield Branch of Sinopec,Deyang,Sichuan 618000,China |
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| Abstract: | The reservoirs JS21 and JS23 in Xinchang gas field are hard to develop because of the poor quality and the water block resulted from fracturing. The actuating pressure gradient value of reservoir JS21 and influencing factors such as permeability water saturation and invasion depth of exotic fluid are tested and analyzed in laboratory. The results of experiments show higher actuating pressure is caused by the decrease of permeability, and it increases with water saturation. The filtration of breaking is the ... |
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| Keywords: | Low porosity and permeability reservoir Hard-develop reserves Actuating pressure Water block Xinchang gas field |
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