WATER INJECTION CASE HISTORY
PROJECT OVERVIEW
Location : Algeria
Injection Rate : 40,000 50,000 bbl / day
Injection Pressure : 1,500 2,000 psi
Fluid : Aquifer water from feed well
EQUIPMENT USED:
Filtration : 2 off duplex cartridge filter units capable of
filtering 50,000 bbl / day down to 2 micron.
Chemical Injection : 1 x Multi pump (3 units) chemical injection skid
complete with day tanks
1 x single pump with day tank for biocide
Suction Booster Pump : Diesel driven 4 stage centrifugal pump,
boosting aquifer feed water from 100 psi up to
700 psi
Main Injection pump : Diesel driven 7 stage centrifugal pump skid
Well Head Filtration : High pressure (3,000psi) filter skids
used on additional injection wells
Ancillary Items : Diesel driven portable lighting towers
Low pressure flexible suction hoses / fittings
High pressure discharge line / fittings
20,000 gal bulk diesel storage tanks
2 x 40 ft stores containers
1 x 40 ft stores / workshop container
1 x 20 site office
PRODUCTS SUPPLIED
Filter cartridges : 10 micron nominal cartridges
Injection chemicals : Biocide
Scale Inhibitor
Oxygen Scavenger
Corrosion Inhibitor
PROJECT DETAILS
The main purpose for BJ providing the temporary injection package was due to
the delays the client was experiencing during the construction of their permanent
injection facility. This delay was causing problems with production and the
decision was made to install a temporary injection package.
BJ Services were initially contracted to supply a stand-alone water injection
package capable of injecting water into three wells simultaneously via an
injection pipeline loop with water supplied from an aquifer feed well.
The initial injection parameters were, 40,000 bbl / day @ 1,500 psi for a period of
six (6) months. The contract also included the supply of all injection chemicals,
these were provided by BJ Chemical Services, Houston.
Prior to commencing injection, the pipeline loop had to cleaned to remove all
rust, scale and debris.
Following the initial injection phase the client installed flow lines to two additional
injection wells. As these lines could not be cleaned online, BJ were ask to
provide additional high pressure filtration skids to remove any debris, rust and
scale from the new injection pipe-work.
The injection parameters were then changed to approximately 50,000 bbl / day at
2,000 psi. Maximum injection rate achieved during operations was 56,000 bbl /
day at 2,000 psi
After the initial six months, the client requested an extension to the contract as
further delays in the completion of their permanent facilities had been confirmed.
BJ continued the injection operations for a total period of eighteen months until
the clients permanent facilities had been commissioned.
The success of this temporary injection package provided by BJ Services was
evident in the revenues the client earned through the ability to attain early
production and also provide immediate pressure management to the producing
reservoir.
4 STAGE SUCTION BOOSTER CENTRIFUGAL PUMP
MULTISTAGE MAIN INJECTION CENTRIFUGAL PUMP SKID
7 STAGE MAIN INJECTION CENTRIFUGAL PUMP END
DUPLEX CARTRIDGE FILTER SKIDS
MULTI PUMP CHEMICAL INJECTION SKID WITH DAY TANKS AND
INJECTION MANIFOLD
8,000 GAL DIESEL STORAGE TANK
STORES / WORKSHOP CONTAINERS
