TY -的A2 Corbella梅西盟——陈,剑盟——徐,杰盟——王,苏苏人盟——太阳(AU -李,中盟——贾Wanglu盟——彭,萍安PY - 2021 DA - 2021/03/23 TI -不同的储层岩石的溶解有机酸在实验室模拟:对变更的影响深水库SP - 6689490六世- 2021 AB -有机酸在深水库的改变是重要的特工。它是困难的,然而,有机酸的影响评估变更深水库,因为不同的溶解过程可能发生在成岩作用。本研究模拟三种不同类型的储层岩石的溶解醋酸在一个封闭的系统,比较了矿物和元素组成、表面形貌、孔隙结构、水化学变化的初始和改变样本。研究表明,泥晶灰岩和糖粒状白云岩都强烈溶解,失去约20%他们最初的岩石样本权重的-30%。扫描电镜下观察表明,石灰石溶解同质,而白云岩显示蜂窝似的解散。两个碳酸盐岩样品显示大空间的发展,包括孔和千分尺规模的蛀牙,但不同大小的纳米孔被封锁。相比之下,岩屑长石砂岩是不同类地改变,失去重量比例约13%的方解石胶结物的溶解。这些宏观尺寸直接开发,但这些纳米孔在窄范围的大小不同。体积增加在所有三个储层类型主要是归因于碳酸盐矿物的溶解。在深水库、原位生成的有机酸能扩大现有蛀牙在砂岩碳酸盐和发展的解理。 The microfissure porosity in sandstone is limited but can increase through other geological processes such as overpressure. More importantly, these acids can maintain the acidity of pore waters, inhibit the precipitation of dissolved minerals, and help to preserve reservoir porosity. Although temperature plays an insignificant role in laboratory simulations, it influences both the generation and destruction processes of organic acids in deep reservoirs on geologic time scales and, thus, warrants further attention. The results provide a basis for recognizing the typical patterns of organic acid dissolution on different reservoir rocks and further suggest the potential role of organic acids in the formation and preservation of secondary porosity in deeply buried reservoirs. SN - 1468-8115 UR - https://doi.org/10.1155/2021/6689490 DO - 10.1155/2021/6689490 JF - Geofluids PB - Hindawi KW - ER -