Oil and gas industry. Acidizing презентация

16.02.2016
Presentation made by excellent trio
Outline for our presentation
Introduction on acidizing.
Formation type.
Conclusion.

16.02.2016
Presentation made by excellent trio
What do we call acidizing?!
The process that involves the injection of chemicals to eat away at any skin damage, "cleaning up" the formation, thereby improving the flow of reservoir fluids. A strong acid (usually hydrochloric acid) is used to dissolve rock formations, but this acid does not react with the Hydrocarbons. As a result, the Hydrocarbons are more accessible. Acid can also be used to clean the wellbore of some scales that form from mineral laden produced water.

16.02.2016
Presentation made by excellent trio
Acidizing background
#1 – 120 years
#2 – 1940’s
#3 – Acidizing nowadays

16.02.2016
Presentation made by excellent trio

16.02.2016
Presentation made by excellent trio
Formation type

16.02.2016
Presentation made by excellent trio

16.02.2016
Presentation made by excellent trio

16.02.2016
Presentation made by excellent trio
Hydrochloric acid (HCL) molecule
Knowing the type of formation being acidized and details
of its composition (mineralogy) is critical to achieving
positive results. In carbonate formations, the acid job
design is typically based on the use of hydrochloric acid
(HCl). The objective when acidizing carbonate formations
is to dissolve carbonate based materials to create new
or clean existing pathways or channels that allow the
formation fluids (oil, gas, and water) to flow more freely
into the well.

When acidizing
The acid is chemically consumed and neutralized as the target material is dissolved
The acid is pumped through the coiled tubing and into the productive formation
When pumping any fluid in a well will have natural tendency to follow the path with the highest permeability
In all above cases when acid job has been pumped the well starts production

After that
Operator should consider by using separate tanks or containers to isolate the initial produced fluids (spent acid and produced water)
It will contain pH of 2-3 approaching neutral pH
Once neutralized, spent acid and produced water can be handled with other produced water at the production site

Acidizing equipment
16.02.2016
Presentation made by excellent trio

Cementing & Acidizing Transport (C&A Transport)
475 HP diesel engine
Able to mix and pump cements, acid, acid solvents
Designed and fabricated to extreme weather conditions

Slow Rate Pumping Transport
Combines low rate pumping with ability to transport tubing rotation
Positive displacement triplex pump
Pre-charge fluid transfer pump
Water heater tank for controlled fluid temperature
Tubing rotator
Pressure valve for safety
Improves first attempt operations
Lowers slurry volumes
Reduces time on location
Increases cost savings

Stimulation Pumping Transport
High pressure mixing and pumping abilities
932 kW (1250 HP) pumping and complete mixing
12 cylinder diesel engine
Heavy 5 speed automatic transmission
745 kW (1000 HP) input rated pump
Real-time web and data display
Programmable pressure shutdown
Dedicated stimulation service equipment