Evaluation of Formation Damage/Completion Impairment Following Dynamic Filter-Cake Deposition on Unconsolidated Sand

2008 ◽  
Author(s):  
Vernon George Constien
Keyword(s):  
Filter Cake ◽  
Formation Damage ◽  
Unconsolidated Sand ◽  
Dynamic Filter

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

Formation Damage Caused by Improper Mn3O4-based Filter Cake Cleanup Treatments

2011 ◽  
Author(s):  
Abdullah Mohammad Al Moajil ◽  
Hisham A. Nasr-El-Din
Keyword(s):  
Filter Cake ◽  
Formation Damage

Chelating Agent for Uniform Filter Cake Removal in Horizontal and Multilateral Wells: Laboratory Analysis and Formation Damage Diagnosis

2015 ◽  
Author(s):  
Hussain Al-Ibrahim ◽  
Tariq AlMubarak ◽  
Majed Almubarak ◽  
Peter Osode ◽  
Mohammed Bataweel ◽  
...  
Keyword(s):  
Filter Cake ◽  
Chelating Agent ◽  
Laboratory Analysis ◽  
Formation Damage ◽  
Damage Diagnosis ◽  
Cake Removal

scholarly journals Transient response of near-wellbore supercharging during filter cake growth

2021 ◽  
Vol 76 ◽  
pp. 46
Author(s):  
Tianshou Ma ◽  
Nian Peng ◽  
Ping Chen ◽  
Yang Liu
Keyword(s):  
Pore Pressure ◽  
Filter Cake ◽  
Early Stage ◽  
Drilling Fluid ◽  
Reduction Rate ◽  
Time Dependent ◽  
Low Permeability ◽  
Drilling Fluids ◽  
Dynamic Filter ◽  
Cake Porosity

Supercharging in the vicinity of a borehole is an important factor that affects formation damage and drilling safety, and the filter cake growth process has a significant impact on supercharging in the vicinity of the borehole. However, existing models that predict pore pressure distribution overlook dynamic filter cake growth. Thus, an analytical supercharging model was developed that considers time-dependent filter cake effects, and this model was verified using a two-dimensional numerical model. The influences of filter cake, formation, and filtrate properties on supercharging were investigated systematically. The results indicate that time-dependent filter cake effects have significant influence on supercharging. Supercharging increases in the early stage but decreases over time because of the dynamic growth of filter cake, and the supercharging magnitude decreases along the radial direction. Because of filter cake growth, the magnitude of supercharging falls quickly across the filter cake, and the decreased magnitude of pore pressure caused by the filter cake increases. Supercharging in low-permeability formations is more obvious and the faster rate of filter cake growth, a lower filtrate viscosity and faster reduction rate of filter cake permeability can help to weaken supercharging. The order of importance of influencing factors on supercharging is overbalance pressure > formation permeability > formation porosity ≈ filtrate viscosity > filter cake permeability attenuation coefficient > initial filter cake permeability control ratio > filter cake growth coefficient > filter cake porosity. To alleviate supercharging in the vicinity of the borehole, adopting drilling fluids that allow a filter cake to form quickly, optimizing drilling fluid with a lower filtrate viscosity, keeping a smaller overbalance pressure, and precise operation at the rig site are suggested for low-permeability formations during drilling.

scholarly journals Formation Damage Avoidance by Reducing Invasion with Sodium Silicate-Modified Water-Based Drilling Fluid

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1485 ◽  
Author(s):  
Salaheldin Elkatatny ◽  
Tural Jafarov ◽  
Abdulaziz Al-Majed ◽  
Mohamed Mahmoud
Keyword(s):  
Rheological Properties ◽  
Sodium Silicate ◽  
Filter Cake ◽  
Drilling Fluid ◽  
Formation Damage ◽  
Ct Scanner ◽  
Tight Sandstone ◽  
Ct Number ◽  
Mechanical Removal ◽  
Before And After

Drilling multilateral and horizontal wells through tight gas reservoirs is a very difficult task. The drilling fluid should be designed to reduce both fluid and solid invasion into the tight formation to avoid formation damage by aqueous phase trapping. The objective of this paper is to assess the effect of sodium silicate on the drilling fluid properties such as rheological and filtration properties. Rheological properties (RPs) were measured at different temperatures while the filtration test was performed at 300 °F and 300 psi differential pressure. A retained permeability calculation was determined to confirm the prevention of solid invasion. The rheological properties results confirmed that the optimal concentration of sodium silicate (SS) was 0.075 wt.% and at the same time, the temperature has no effect on the SS optimum concentration. Using 0.075 wt.% of SS reduced the filtrate volume by 53% and decreased the filter cake thickness by 65%. After mechanical removal of the filter cake, the return permeability of the tight sandstone core was 100% confirming the prevention of solid invasion. The computer tomography (CT) scanner showed that the CT number before and after the filtration test was very close (almost the same) indicating zero solid invasion and prevention of the formation damage.

Evaluation of secondary formation damage caused by the interaction of chelated barite with formation rocks during filter cake removal

2019 ◽  
Vol 183 ◽  
pp. 106395 ◽  
Author(s):  
Badr S. Bageri ◽  
Abdulrauf Rasheed Adebayo ◽  
Assad Barri ◽  
Jaber Al Jaberi ◽  
Shirish Patil ◽  
...  
Keyword(s):  
Filter Cake ◽  
Formation Damage ◽  
Secondary Formation ◽  
Cake Removal
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