公开(公告)号：US20240318514A1

公开(公告)日：2024-09-26

申请号：US18187228

申请日：2023-03-21

Applicant: Saudi Arabian Oil Company

Inventor： Jithin Mathew John ,  Zayed Ghazai Alotaibi

IPC: E21B21/06 ,  B01D29/00 ,  B01D29/52 ,  B01D29/94 ,  B01D37/04

CPC classification number: E21B21/065 ,  B01D29/15 ,  B01D29/52 ,  B01D29/66 ,  B01D29/94 ,  B01D37/046 ,  B01D2201/086 ,  B01D2221/04

Abstract: Methods of operating candle filter systems for removing solids from MEG recovered from drilling fluids include passing an MEG rich stream to a candle filter system comprising a plurality of candle filter units in parallel, determining a concentration of TDS in the MEG rich stream, determining whether to operate the candle filter system in a low TDS mode or a high TDS mode based on the concentration of TDS the MEG rich stream, filtering the MEG rich stream in the plurality of candle filter units to produce a filtrate and a filter cake, determining to conduct a cleaning cycle of the candle filter units based on a pressure differential, and conducting a cleaning cycle to remove the filter cake from the outer surfaces of the filter candles. The cleaning cycle is modified to improve removal of solids from the filter candles of the candle filter units.

公开(公告)号：US12215555B2

公开(公告)日：2025-02-04

申请号：US18187228

申请日：2023-03-21

Applicant: Saudi Arabian Oil Company

Inventor： Jithin Mathew John ,  Zayed Ghazai Alotaibi

IPC: E21B21/06 ,  B01D29/15 ,  B01D29/52 ,  B01D29/66 ,  B01D29/94 ,  B01D37/04

Abstract: Methods of operating candle filter systems for removing solids from MEG recovered from drilling fluids include passing an MEG rich stream to a candle filter system comprising a plurality of candle filter units in parallel, determining a concentration of TDS in the MEG rich stream, determining whether to operate the candle filter system in a low TDS mode or a high TDS mode based on the concentration of TDS the MEG rich stream, filtering the MEG rich stream in the plurality of candle filter units to produce a filtrate and a filter cake, determining to conduct a cleaning cycle of the candle filter units based on a pressure differential, and conducting a cleaning cycle to remove the filter cake from the outer surfaces of the filter candles. The cleaning cycle is modified to improve removal of solids from the filter candles of the candle filter units.