Using Hydrochloric Acid to Remove Ilmenite Water-Based Filter Cake in HPHT Applications

2013 ◽  
Author(s):  
S. M. Elkatatny ◽  
J. Xiao ◽  
H. A. Nasr-El-Din ◽  
M. Al-Bagoury
Keyword(s):  
Hydrochloric Acid ◽  
Filter Cake ◽  
Water Based

Self-destructive barite filter cake in water-based and oil-based drilling fluids

2021 ◽  
Vol 197 ◽  
pp. 107963
Author(s):  
Zeeshan Tariq ◽  
Muhammad Shahzad Kamal ◽  
Mohamed Mahmoud ◽  
Olalekan Alade ◽  
Ayman Al-Nakhli
Keyword(s):  
Filter Cake ◽  
Drilling Fluids ◽  
Water Based

Effect of water-based drilling fluid components on filter cake structure

2014 ◽  
Vol 262 ◽  
pp. 51-61 ◽  
Author(s):  
Rugang Yao ◽  
Guancheng Jiang ◽  
Wei Li ◽  
Tianqing Deng ◽  
Hongxia Zhang
Keyword(s):  
Filter Cake ◽  
Drilling Fluid ◽  
Effect Of Water ◽  
Water Based

scholarly journals Novel metal mesh filter using water-based regeneration for small-scale biomass boilers

2020 ◽  
Author(s):  
Björn Baumgarten ◽  
Peter Grammer ◽  
Ferdinand Ehard ◽  
Oskar Winkel ◽  
Ulrich Vogt ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Service Time ◽  
Filter Cake ◽  
Collection Efficiency ◽  
Commercial Application ◽  
Small Scale ◽  
Maximum Pressure ◽  
Gas Velocity ◽  
Metal Mesh ◽  
Water Based

Abstract Particulate matter emissions are a key issue of modern biomass boilers. A novel gas cleaning method using a metal mesh filter combined with water-based cleaning was developed and tested. The filter was tested batch-wise. Flue gas of a commercial 50-kW boiler was filtered until a pressure drop of 2000 Pa was reached. Afterwards, the filter was regenerated. The initial prototype used ultrasound in order to remove the filter cake from the filter candles. Regeneration was complete and, even after boiler malfunctions producing tar, the filter cake could still be removed. Given the good results, a second cleaning mode, flushing the filter candles with water, was tested. The results were as good as with ultrasonic cleaning. Peak mass collection efficiency was very high with 98 ± 2% (burning wood pellets). However, directly after cleaning, the first layer of filter cake has to be developed. In this initial phase, collection efficiency is low. Service time until maximum pressure drop was reached depended on the gas velocity. Using pellets as fuel, at a gas velocity of 66.6 m/h, 12-h service time was reached and 4.1 g dust was collected per square meter filter surface, while at 33.3 m/h, service time increased to 55 h and collected dust to 13.9 g/m2. Using low-quality wood chips, the raw gas dust loading was much higher but also the maximum loading of the filter was higher with 13.3 to 28.9 g dust separated per square meter. Still, the service time decreased to 3.4 respective 38 h. Peak collection efficiency increased to 99.5 ± 0.8%. The overall collection efficiency including the buildup of the filter cake depends on the gas velocity and fuel. It ranges from 74 ± 4 to 91 ± 1%. The feasibility of the filter concept could be proven, and further development towards a commercial application is in progress. Metal mesh filters with countercurrent cleaning showed a high potential given their simple and robust design, as well as high collection efficiency.

Carefully Designed Water-Based Drill-In Fluid And Filter Cake Removal System Improves Reservoir Producibility And Reduce Well Completion Costs

2009 ◽  
Author(s):  
Nayef Abdullah Al-Anzi ◽  
Bader Y.A. Haider ◽  
Ashis Kumar Gohain ◽  
Iqbal Hussain ◽  
Eric Davidson ◽  
...  
Keyword(s):  
Filter Cake ◽  
Well Completion ◽  
Water Based ◽  
Cake Removal ◽  
Removal System

scholarly journals A Laboratory Investigation on the Way to Remove the Filter Cake Generated by Ilmenite Water-Based Drilling Fluids

2021 ◽  
Vol 5 (2) ◽  
pp. 1-14
Author(s):  
Mahmoud O
Keyword(s):  
Ct Scan ◽  
Filter Cake ◽  
Drilling Fluid ◽  
Filter Press ◽  
Drilling Fluids ◽  
Fluid Mud ◽  
Minimal Impact ◽  
Water Based ◽  
Filter Cakes ◽  
The Way

The increasing demand for deeper drilling and more complicated wells fastens the way for improved drilling fluid (mud) technologies and promising additives. Several studies have shown numerous improvements in mud characteristics upon using ilmenite compared to the commonly used weighting materials. This study aims at investigating the removal of filter cake deposited by ilmenite water-based drilling fluid under harsh conditions using low-concentration (7.5 wt%) of hydrochloric acid (HCl) and chelating agent (HEDTA) to prevent iron precipitation during reaction. API filter press was used to conduct the filtration tests and generate the filter cake at a pressure ~ 300 psi and temperature ~ 250°F. Different sandstone cores of 2.5-in. diameter and 1-in. thickness were used to simulate the formation during filtration. Filtrate fluids were collected for 30 minutes as per API procedures and computerized tomography (CT) scan was used to characterize the cores with the deposited filter cakes. The filter cakes were soaked with HCl–chelate solution for six hours. Cores with the remaining filter cakes were CT scanned again. Effluent solutions resulting from the aforementioned soaking process were analyzed using inductively coupled plasma (ICP). Scanning electron microscopy–energy dispersive spectroscopy (SEM-EDS) was used to analyze the dried filter cakes and remaining residue. CT scan and SEM-EDS showed two layers of the filter cake with different densities but similar elemental composition. Using 7.5 wt% of HCl can partially remove the filter cake generated by ilmenite water-based drilling fluids. Adding the chelate showed minimal impact on the filter cake removal-efficiency; however, it helped nullify the corrosion issues during the treatment. This study provides a step forward on the way to chemically remove ilmenite-based filter cake using low acid concentration and virtually overcome corrosion issues encountered while acidizing.

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