Simultaneous Gravel Packing and Filter Cake Removal in Horizontal Wells Applying Shunt Tubes and Novel Carrier and Breaker Fluid

2001 ◽  
Author(s):  
Pedro M. Saldungaray ◽  
Juan C. Troncoso ◽  
Bambang T. Santoso
Keyword(s):  
Filter Cake ◽  
Horizontal Wells ◽  
Gravel Packing ◽  
Cake Removal

A Step Change in Open Hole Gravel Packing Methodology: Drilling Fluid Design and Filter Cake Removal Method

2007 ◽  
Author(s):  
Mathew M. Samuel ◽  
Abdul Hameed Ahmad Mohsen ◽  
Aziz Ejan ◽  
Matthew Alexander Law ◽  
Chao Wei Wrong ◽  
...  
Keyword(s):  
Filter Cake ◽  
Drilling Fluid ◽  
Step Change ◽  
Removal Method ◽  
Open Hole ◽  
Gravel Packing ◽  
Fluid Design ◽  
Cake Removal

Filter Cake Buildup in Horizontal Wells: Characterization and Impact on Removal Operation

2018 ◽  
Author(s):  
Bilel Hamzaoui ◽  
Abdullah M. Al Moajil ◽  
Sinan Caliskan ◽  
Sajjad S Aldarweesh
Keyword(s):  
Filter Cake ◽  
Horizontal Wells

Well Clean-Up Using a Combined Thermochemical/Chelating Agent Fluids

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Mohamed Mahmoud
Keyword(s):  
High Temperature ◽  
Filter Cake ◽  
Oil And Gas ◽  
Drilling Fluid ◽  
Chelating Agent ◽  
Drilling Fluids ◽  
Gas Wells ◽  
Oil And Gas Wells ◽  
Different Types ◽  
Cake Removal

The well clean-up process involves the removal of impermeable filter cake from the formation face. This process is essential to allow the formation fluids to flow from the reservoir to the wellbore. Different types of drilling fluids such as oil- and water-based drilling fluids are used to drill oil and gas wells. These drilling fluids are weighted with different weighting materials such as bentonite, calcium carbonate, and barite. The filter cake that forms on the formation face consists mainly of the drilling fluid weighting materials (around 90%), and the rest is other additives such as polymers or oil in the case of oil-base drilling fluids. The process of filter cake removal is very complicated because it involves more than one stage due to the compatibility issues of the fluids used to remove the filter cake. Different formulations were used to remove different types of filter cake, but the problem with these methods is the removal efficiency or the compatibility. In this paper, a new method was developed to remove different types of filter cakes and to clean-up oil and gas wells after drilling operations. Thermochemical fluids that consist of two inert salts when mixed together will generate very high pressure and high temperature in addition to hot water and hot nitrogen. These fluids are sodium nitrate and ammonium chloride. The filter cake was formed using barite and calcite water- and oil-based drilling fluids at high pressure and high temperature. The removal process started by injecting 500 ml of the two salts and left for different time periods from 6 to 24 h. The results of this study showed that the newly developed method of thermochemical removed the filter cake after 6 h with a removal efficiency of 89 wt% for the barite filter cake in the water-based drilling fluid. The mechanisms of removal using the combined solution of thermochemical fluid and ethylenediamine tetra-acetic acid (EDTA) chelating agent were explained by the generation of a strong pressure pulse that disturbed the filter cake and the generation of the high temperature that enhanced the barite dissolution and polymer degradation. This solution for filter cake removal works for reservoir temperatures greater than 100 °C.

Insight into Secondary Posterior Formation Damage During Barite Filter Cake Removal in Calcite Formations

2020 ◽  
Author(s):  
Jaber B. Al Jaberi ◽  
Badr S. Bageri ◽  
Assad Barri ◽  
Abdulrauf Adebayo ◽  
Shirish Patil ◽  
...  
Keyword(s):  
Filter Cake ◽  
Formation Damage ◽  
Insight Into ◽  
Cake Removal
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