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水淬高炉矿渣(BFS)是炼铁厂的副产品,具有水硬性质,目前已广泛用于建筑水泥———矿渣水泥的生产。在我国,BFS大量应用于石油固井业始于20世纪90年代中期。由于用BFS配制的固井液具有密度低、密度范围可调、强度高、滤失量小、无游离水、触变性好、稠化时间可调、无体积收缩等特点,可广泛用于常规和复杂油气井固井。文章概述了BFS固井液及其性质、BFS的筛选、BFS固井液的性能、BFS固井液的配制及现场施工方法,并以吉林油田油层套管BFS固井为例,对BFS固井液的固井质量进行了阐述。实践表明,吉林油田油层套管采用BFS固井,CBL测井表明固井质量优质。
Waterbased Blast furnace slag (BFS) is a by-product of the ironworks with a hydraulic nature and is now widely used in the production of construction cement, slag cement. In our country, BFS is widely used in petroleum cementing industry since the mid-1990s. Due to its low density, adjustable density range, high strength, small fluid loss, no free water, good thixotropy, adjustable thickening time and no volume shrinkage, cementing fluid formulated with BFS can be widely used in conventional And complex well cementing. In this paper, the properties of BFS cementing fluid and its properties, screening of BFS, performance of BFS cementing fluid, preparation of BFS cementing fluid and on-site construction methods are summarized. Taking BFS cementing of casing of Jilin Oilfield as an example, Liquid cementing quality are described. The practice shows that the BFS cementing is used for the casing of Jilin Oilfield and the CBL logging shows that the cementing quality is good.