1. Well Workover Operations
Well servicing pumps are frequently used in workover operations, which involve interventions aimed at restoring or enhancing the production of an oil or gas well.
These activities include tasks such as removing debris from the wellbore, replacing pumps or equipment, P&A, Zonal Isolation and Side-tracking activities.
All these activities are aimed to reduce water cut and improving production from payload zones with least water cut.
The pumping solutions utilised in these activities include the following:
1. Shut In- Shut Off for well BOP
2. BOP Charging units
3. Pressure charging for Production Logging Operations
4. Mud Pumps for Drilling Side Track operations
5. Well control Systems
2. Acidizing
In acidizing operations, well servicing pumps are widely utilised for stimulation of Oil wells.
The well servicing pumps are used for 2 main categories:
Acid washing - To clean the tubular casing from Scales to improve productivity and improve life of the well
Acid Fracturing - To stimulate the well to improve the well productivity by pumping acid directly into the formation.
3. Fracturing (Hydraulic Fracturing)
Well servicing pumps are employed in Hydraulic Fracturing (or "fracking"), where fluids are injected at high pressure to fracture the rock formations and increase the permeability of the reservoir. This process helps to stimulate the flow of oil or gas from tight formations.
4. Cementing Operations
Cementing is a critical process in well construction and maintenance.
Well Servicing pumps are used to inject cement slurry into the wellbore, filling the annular space between the casing and the wellbore to provide structural integrity, prevent fluid migration, and isolate different zones in the reservoir.
Well servicing pumps are also used in P&A operations to plug well with a packer and cement to restrict flow into the main bore.
5. Well Killing
Well servicing pumps are used during Well-Killing operations, where heavy fluids are pumped into a well to control or stop uncontrolled production or blowouts.
This is done by pumping heavy fluids like kill mud into the borehole and maintain an Overbalance condition.
Bull Heading is another technique utilised in ensuring well Kill and our well servicing pumps also find its use in such operations as well.
6. Circulating Drilling Fluids
In many well servicing applications, pumps are used to Circulate Drilling fluids (also called mud) during operations like well cleaning, pressure testing, and well completion. These fluids are used to cool the bit, remove cuttings, and control pressure during drilling or servicing operations.
7. Pressure Testing
Well servicing pumps are used to Pressure Test the wellbore, casing, or other equipment to verify its integrity and ensure there are no leaks. This process is essential in maintaining the safety of operations and ensuring equipment is functioning as intended.
8. Wellbore Cleaning and Sand Control
Well servicing pumps are used in cleaning operations to remove sand, debris, or other unwanted materials from the wellbore. They can also be used in sand control operations to inject chemicals or materials that prevent sand production from the reservoir.
9. Shut-in or Workover Fluid Circulation
During a well shut-in or workover operation, well servicing pumps circulate fluids to maintain wellbore stability, pressure, and integrity during the downtime.
10. Gas Lift Operations
In gas lift operations, well servicing pumps can be used to inject gas into the production tubing to lift liquid hydrocarbons to the surface.
This is done to assist in artificial lifting when the natural reservoir pressure is insufficient, and gas injection increases gas-liquid ratio which reduces the oil, water and gas density.
11. Flowback/ Recirculation Operations
After hydraulic fracturing, well servicing pumps are used during the flowback process, where fluids (including fracturing fluids and any other injected materials) are pumped back to the surface. This is essential for clearing the wellbore and preparing it for continued production.
