Wellbore Cleanout and Scale Removal

Reservoir Engineering 839 Views

Exercises Wellbore Cleanout and Scale Removal

1. Can scale inhibitors be placed in acid solutions?

  1. Yes
  2. No
  3. Some inhibitors can

Solution

  1. Some inhibitors can

2. Which acid system is best suited for removing iron sulfide scale from the wellbore and perforations?

  1. 10 % HCl with sequestering agents
  2. 10 % acetic acid
  3. 15 % HCl-aromatic dispersion
  4. 7 1/2 % HCl with no surfactant

Solution

  1. 10 % HCl with sequestering agents

3. All acid-insoluble scales cannot be removed chemically.

  1. True.
  2. False.

Solution

  1. False (Calcium sulfates can be removed with converter solutions).

4. How do liquid scale inhibitors work?

  1. By dissolving in formation fluids during placement.
  2. By coating the tubulars.
  3. By balancing the chemical equilibrium.
  4. By adsorbing on the rock surface and being produced gradually.

Solution

  1. By adsorbing on the rock surface and being produced gradually

Assessment Wellbore Cleanout and Scale Removal

1. Hydrocarbons such as xylene or toluene are preferred over diesel when applying a mutual solvent to a dry gas reservoir.

A .True. ✔
B .False.

2. Soaking the perforations with acid is less expensive than pumping acid into the formation.

A .True. ✔
B .False.

3. Calcium Sulfate is _________.

A .water soluble.
B .acid soluble.
C .acid insoluble. ✔

4. An acid insoluble material is treated by_________.

A .acidizing then converting.
B .converting then acidizing. ✔
C .neither of these.

5. The formation of scale can be inhibited within the rock matrix so an acid job will not have to be performed later.

A .True ✔
B .False

6. A well treating program calls for a mutual solvent and acid job. Which is pumped first?

A .The mutual solvent. ✔
B .The acid.

Recommended for You 

Introduction to Acidizing

Additives in Acidizing Fluids

Matrix Acidizing

Fracture Acidizing

Diverting Materials in Acidizing

Hydraulic Fracturing Fundamentals

Production Logging of Multiphase Flow in Horizontal Wells

Post Views: 255
Pages: 1 2 3 4 5

About PETRO SHINE

Check Also

Matrix Acidizing,matrix acidizing pdf,matrix acidizing adalah,matrix acidizing ppt,matrix acidizing procedure,matrix acidizing book,matrix acidizing in reservoirs,matrix acidizing lab,matrix acidizing definition,matrix acidizing stimulation,matrix acidizing diverting agent,matrix acidizing carbonate,matrix acidizing treatments,matrix acidizing diverter,matrix acidizing in production,perencanaan matrix acidizing,matrix acidizing adalah,matrix acidizing and acid fracturing,matrix acidizing and acid stimulation,matrix acidizing diverting agent,difference between matrix acidizing and acid fracturing,differences between matrix acidizing and hydraulic fracturing,sandstone matrix acidizing knowledge and future development,acid matrix acidizing,what is matrix acidizing,matrix benefits,find the matrix a satisfying the matrix equation,matrices and matrix difference,matrix acidizing book,what is matrix acidizing,matrix benefits,matrix acidizing carbonate,what is matrix acidizing,matrix acidizing definition,matrix acidizing diverting agent,matrix acidizing diverter,define matrix acidizing,what is matrix acidizing,matrix acidizing eor,what is matrix acidizing,matrix earnings,matrix acidizing and acid fracturing,fracking matrix acidizing,what is matrix acidizing,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing in reservoirs,matrix acidizing is,matrix acidizing in production,matrix benefits,what is the matrix philosophy,matrix solution example,matrix acidizing,matrix acidizing vs acid fracturing,sandstone matrix acidizing knowledge and future development,what is matrix acidizing,matrix benefits,matrix solution example,matrix acidizing lab,what is matrix acidizing,matrix benefits,matrix solution example,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing pdf,matrix acidizing ppt,matrix acidizing procedure,matrix acidizing in production,perencanaan matrix acidizing,what is matrix acidizing,matrix benefits,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing in reservoirs,what is matrix acidizing,matrix benefits,matrix vs matrix reloaded,matrix explained,matrix acidizing stimulation,matrix acidizing is,sandstone matrix acidizing knowledge and future development,slb matrix acidizing,matrix acidizing treatments,what is matrix acidizing,matrix benefits,matrix solution example,find the matrix a satisfying the matrix equation,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing and acid fracturing,what is matrix acidizing,matrix acidizing,matrix acidizing vs acid fracturing,acid matrix,matrix acidizing vs acid fracturing,matrix acidizing,matrix acidizing vs acid fracturing,matrix acidizing,matrix acidizing vs acid fracturing

Matrix Acidizing

Matrix Acidizing: This type of acidizing treatment is designed to remove skin damage that extends beyond the immediate surface of the ...

Powered by WordPress | Designed by TieLabs
© Copyright 2025, All Rights Reserved