The QUANTUM RH* retrievable hydraulic-set sealbore production packer is set with tubing pressure and released from a specially designed seal assembly with annular pressure. The top connection and internal profile are identical to the QUANTUM packer, allowing compatibility with all QUANTUM packer accessories. QUANTUM RH packers may be run and set with the hydraulic-release anchor seal assembly or the QUANTUM packer anchor seal assembly. The hydraulic-releasing anchor is a seal assembly equipped with an external hydraulic release and does not require rotational operations. A QUANTUM packer retrieving tool is used to retrieve the packer.
Design and components
These packers feature single, one-piece, bidirectional slips and standard packing elements and seals; in emergencies, they are millable using conventional packer milling tools.
The QUANTUM RH packer’s flow-wetted components are manufactured from materials that comply with NACE MR0175 standards for sulfide stress cracking-resistant metallic materials.
APPLICATIONS
Deviated wells
Single-trip systems
Production or isolation wells requiring a sealbore packer
Gravel-pack operations requiring a sealbore packer
ADVANTAGES
Hydraulically set
Interlocked packer and hydraulic locator
Compatible with QUANTUM* gravel-pack packer system accessories
Easy running and setting with production string
Minimal disengagement while running and setting
Case Study
CHALLENGES
Enhance productivity by minimizing reservoir damage caused by kill fluid across the perforation zones.
Mitigate possibility of unsettingcompletion packer due to gun shock.
SOLUTION
Deploy the QUANTUM RH* retrievable hydraulic-set sealbore production packer to absorb high shock and enable easy recovery after the perforation operation.
RESULTS
In the first well, increased productivityby 87.5%, from 240 to 450 m3/d and saved2 days of rig time.
Increased production by an average of200 m3/d for all seven wells.
Saved an estimated USD 135,000 in totaloperating costs for the first well and USD700,000 for all seven.
Improve production with high drawdown and clean perforation tunnel
Petroleum Development Oman (PDO) was drilling in the Saddad area in the Al Wusta region and wanted to decrease its operation time while completing a vertical well. With a potentially high volume of oil located within the Khaleel (Karim) reservoir, the common completion strategy has yielded a flow rate of 240 m3/d. The operator conducted additional studies on ways to produce more from this reservoir. A clean perforation tunnel can be achieved using high-pressure drawdown and has been proven as a key contributor to improve the productivity up to 450 m3/d, a 87.5% increase in comparison with previously used completion strategies.
Deploy robust packer to minimize release risk from gun shock
Schlumberger recommended using the robust QUANTUM RH retrievable hydraulic-set sealbore production packer, which features superior strength constraint in comparison with conventional retrievable or permanent packers and enables reliable, easy completion string recovery. In addition, an automatic gun release system was used to immediately drop the guns and begin producing the well after the perforation was established. A completion fluid was used to create a static underbalance condition during perforation that maximized perforation tunnel clean out and enabled well flow to surface.
Save USD 700,000 in operating costs and increase oil production
Combining the well completion strategy with tubing-conveyed perforation in a “shoot and drop” operation saved two days in rig time with a single trip downhole. The automatic gun release system eliminated the need to initiate well production after a planned CT operation, resulting in a combined estimated total of USD 135,000 in operational cost savings for the well. The technology was then used in six additional wells, increasing production by an average of 200 m3/d of oil per well and saving a total of USD 700,000 in associated well costs for all seven wells.
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