Abstract:In this study, the feasibility of using offshore water-based drilling cuttings (WDC) as raw materials to prepare sintered bricks was assessed. The effects of different process conditions (raw materials proportion and sintering temperature) on the properties of sintered bricks were investigated, which could contribute to identify the influencing factors and finally lead to the optimum preparing procedure and process parameters. The sintering mechanism of sintered bricks was investigated and the influence mechanism of barite on the properties of sintered bricks was revealed. The results showed that under the optimal preparation conditions (the ratio of raw materials at WDC∶shale∶coal = 30∶65∶5, moisture at 14 %, drying at (100 ± 5) ℃ for 8 h, sintering temperature at 1 000 ℃, keeping warm for 3 h), the properties of the sintered brick could meet the MU15 grade requirements of the Chinese standards Fired Common Bricks GB/T 5101-2017. This study would provide reference to reuse the WDC from offshore oil and gas fields. Key words:offshore water-based drilling cutting/ sintered brick/ resource utilization/ sintering process.
图1烧结砖制备工艺流程图 Figure1.Process flow chart of sintered brick preparation
图3不同水基钻屑掺入量和烧结温度对烧结收缩率和体积密度的影响 Figure3.Effects of different water-based drill cuttings content and sintering temperature on the sintering shrinkage rate and bulk density
图4不同水基钻屑掺入量和烧结温度对抗压强度和吸水率的影响 Figure4.Effects of different water-based drill cuttings content and sintering temperature on compressive strength and water absorption
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1.China Oilfield Services Limited, Langfang 065201, China 2.School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China Received Date: 2021-05-12 Accepted Date: 2021-08-18 Available Online: 2021-09-23 Keywords:offshore water-based drilling cutting/ sintered brick/ resource utilization/ sintering process Abstract:In this study, the feasibility of using offshore water-based drilling cuttings (WDC) as raw materials to prepare sintered bricks was assessed. The effects of different process conditions (raw materials proportion and sintering temperature) on the properties of sintered bricks were investigated, which could contribute to identify the influencing factors and finally lead to the optimum preparing procedure and process parameters. The sintering mechanism of sintered bricks was investigated and the influence mechanism of barite on the properties of sintered bricks was revealed. The results showed that under the optimal preparation conditions (the ratio of raw materials at WDC∶shale∶coal = 30∶65∶5, moisture at 14 %, drying at (100 ± 5) ℃ for 8 h, sintering temperature at 1 000 ℃, keeping warm for 3 h), the properties of the sintered brick could meet the MU15 grade requirements of the Chinese standards Fired Common Bricks GB/T 5101-2017. This study would provide reference to reuse the WDC from offshore oil and gas fields.