Completions
Completions
Baker Oil Tools
provides a complete line of downhole
equipment for flowing wells, secondary recovery and
artificial lift.
These completion tools cover the spectrum of production
equipment, including primary cementing and enhanced oil recovery.
Baker Oil Tools completion methods and equipment include industry
firsts in tri-lateral completions and in other multi-lateral
technology. We supply equipment and engineering support for highly
efficient completions through
the control of formation sand and improved perforation techniques.
The Baker Oil Tools Geothermal Valve Changer System consists of:
- A high temperature packer
- Hydraulic lubricator and power unit
- All necessary hoses, fittings and flanges to
service the wellhead of a geothermal well.
Constructed to withstand the highly corrosive gas
and
steam found in geothermal wells, the system’s packer has
been tested for 24 hours at 3,000 psi (207 bar) and
500° F (260°C) with no leaks.
Case History
Geothermal Cement Job in California
A three-stage cement job was successfully completed on the Elmore
Field’s well No.15 in temperatures ranging to 500°F (260°C). Two 13-3/8" Payzone™ External Casing Packers (ECP®) and two cementing stage collars
were used. The 18-5/8" casing was cemented at 1,696 ft (517 m), and 17
1/2" hole drilled to TD at 2,942 ft. Lost circulation was encountered at
a crossflow zone at 2,620 ft to 2,720 ft (799 m to 829 m). Bottom hole
temperature in the crossflow was 500°F (260°C). The hole was drilled
blind from 2,620 ft (799 m) TD at 2,942 ft (896 m).
Because of the lost circulation, 13
3/8" casing was cemented using Payzone ECPs run below the cemented stage
collars. Caliper logs indicated that the 17-1/2" hole was washed out to
28" in some sections.
The 13 3/8"casing was made up and
landed, and the bottom Payzone ECP was located in a section of hole that
calipered about 19". Inflation cement for the bottom Payzone ECP was
pumped behind a first stage shut-off plug which landed on the float
collar.
Cold water, pumped down the annulus
while pumping inflation cement, inflated the bottom Payzone ECP. The
bottom packer was shear pinned at 1,250 ft (380 m) and opened at about
1,350 psi (93 bar). Batch-mixed inflation cement was retarded 012 hours
at 475°F (246°C).
Following inflation of the bottom
Payzone ECP, the hydraulic stage collar was shear pinned at 2,000 psi
(137 bar) and opened at 1,950 psi (134 bar). Good circulation with full
returns was obtained, indicating that the bottom Payzone ECP was
properly inflated with cement.
The hole was circulated for 12 hours
to let inflation cement set in the Payzone ECP, and the second and third
stage cement jobs were completed without incident.
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