Study on Artificial Filter Cake Evaluation Method of Oleophilic Nano-Plugging Agent
نویسندگان
چکیده
Oil-based drilling fluid is currently widely utilized when shale, in which the oleophilic nano-plugging agent major component for wellbore strengthening. However, there have been few effective and straightforward evaluation methods agent. In this study, an artificial filter cake was created to simulate microfissure of shale formation, performance assessed using fluid-loss reduction rate as index. The made from compound crystal weights a high molecular weight polymer, matching formation pore structures selected. three plugging agents with varying particle sizes (ultrafine CaCO3, emulsified modified rubber MORLF, ULIA agent) compared. Moreover, validity process confirmed, underlying mechanism investigated. proposed technique can produce constant thickness 3 × 10−3 m permeability range 10−18 10−19 m2, assessment approach consistent, precise easy use. This work may provide guideline evaluating laboratory field applications.
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ژورنال
عنوان ژورنال: Energies
سال: 2023
ISSN: ['1996-1073']
DOI: https://doi.org/10.3390/en16083559