E3S Web Conf.
Volume 206, 20202020 2nd International Conference on Geoscience and Environmental Chemistry (ICGEC 2020)
|Number of page(s)||6|
|Section||Geohydrology And Ocean Resources Exploration And Survey|
|Published online||11 November 2020|
Technical exploration of horizontal screw centrifuge in solid-liquid separation of flowback liquid in offshore production
1 CNOOC Energy Technology & Services Limited, Safety & Environmental Protection Branch 300452 China
2 Tianjin Branch Co.,CNOOC Ltd., Tianjin Tianjin 300452 China
Corresponding author: E-mail: firstname.lastname@example.org
This paper introduces the structure and working principle of horizontal screw centrifuge with large length diameter ratio and its technological process in the separation of liquid-solid liquid in the flowback of offshore production. The effects of different water addition ratio, rotating speed and demulsifier content on the separation effect of centrifuge were investigated by indoor experiments. The orthogonal test was used to optimize the parameters, and the optimal combination of parameters was as follows: water ratio was 1.5/1, rotating speed was 3000r / min, demulsification was achieved The dosage was 400mg / L. The optimum rotating speed of the centrifuge is 2000r / min, and the field pilot test is carried out for 10 consecutive days with the best combination of parameters. The results are as follows: the average mechanical impurity rate of oil phase produced by horizontal screw centrifuge is 0.465%, and the average oil content in water phase is 183mg / L. The separation effect is stable.
© The Authors, published by EDP Sciences, 2020
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