Single-and multi-entry sleeve systems for accurate stimulation placement without intervention
RapidStage systems optimize the completion of multistage wellbores by enabling highly accurate placement of stimulation treatments without intervention. This helps ensure the stimulation treatment covers the targeted areas in the wellbore and maximizes the stimulated reservoir area. RapidStage systems can be run into a wellbore using a casing string to surface or on liner hanger systems to enable a reliable, trouble-free cemented or openhole installation.
The RapidStage SE (Single-Entry) fracturing system incorporates the proven RapidStage SE sleeve, RapidStart Initiator or Initiator CT (Casing Test) sleeve, and a means of sleeve isolation. Halliburton offers several isolation options for a variety of reservoir conditions.
To activate RapidStage SE sleeves, frac balls are dropped in sequence, smallest to largest, from surface using the Halliburton Pneumatic Ball Launcher. The frac balls seal on a corresponding millable baffle, shifting the sleeve open, diverting flow through ports in the sleeve and providing isolation from previous stages.
After stimulation, clean-up is assisted by flowing all lower zones simultaneously. The RapidStage ME (Multi-Entry) fracturing system provides operators with enhanced options for completing multi-interval wellbores to enable highly accurate placement of fractures, with minimal or no intervention.
By allowing multiple entry points per target fracturing stage, RapidStage ME sleeves allow operators to mimic traditional plug and perf operations with the efficiency of a ball-drop fracturing sleeve system.
The RapidStage ME system includes both the RapidStage ME and SE sleeves within a single interval. The exit ports of the RapidStage sleeves can be customized to match whatever conditions the job may require.
The application of RapidBall dissolvable ball technology helps eliminate the need for costly wellbore cleanout operations.
Once fracturing is completed, well cleaning is assisted by flowing all lower zones simultaneously.
FEATURES
?Over 50 individual stages
?Can be used with cement or openhole isolation
?Positive locking engagement when sleeve is opened
?10,000 psi in 350°F rated standard service
?HP/HT and sour service available in SE sleeve
?Multiple sleeves per target stage in ME sleeve
?Up to 100 bpm fracturing rates
?Customizable exit ports
?Anti-rotation feature allows milling of baffle without opening sleeve for contingency planning
BENEFITS
?Enables continuous pumping of multistage stimulation treatments
?Reduces completions OPEX
?Enhanced reservoir contact (ME sleeve)
?Decreases water and chemical usage
?Minimizes over displacement
?If used with RapidBall dissolvable balls, no intervention is required
Case study：RapidStage ME Sleeves Help Seneca Increase Efficiency in Extended Reach Laterals
MULTI-ENTRY COMPLETION SYSTEM REDUCES COMPLETION CYCLE TIME
OVERVIEW
In Elk County Pennsylvania, Seneca Resources was looking for ways to further improve completion efficiency, reduce cycle time, and eliminate drill out of their extended reach laterals. They also wanted to improve their average stage count per day. Seneca opted to use RapidStage ME sleeves to eliminate the non-productive time associated with running plugs and guns on wireline, saving time and reducing the overall cost of the frac job.
Further efficiency was gained by using dissolvable ball technology combined with larger ID baffles. By pairing these technologies, Seneca eliminated the need to drill out the toe of their extended laterals.
CHALLENGE
Seneca needed to complete an extended reach lateral (ERL) well with an efficient, costeffective, low risk solution. In ERL wells, all operations and their risks are amplified due to the intense nature of the well’s conditions. Extreme measured depths lead to higher risk coiled tubing operations and extended run times for both coil and wireline units. This can ultimately lead to an inefficient use of time and the increased chance of more costly problems. In ERL wells, the bottom line is that efficiency reduces costs, and traditional methods of completion are often unable to excel in these environments.
SOLUTION
When looking to increase completion efficiency in their extended reach laterals in the northeastern US, Seneca Resources chose to run the RapidStage ME sleeve system in the first three stages of their trial well for a total of four entry points per stage, or 12 sleeves.
Each stage was optimized for both the ball landing signatures and the best treatment design. The system comprised four RapidSuite technologies including RapidBall dissolvable balls, RapidStage ME, RapidStage SE sleeves, and a RapidStart Initiator CT sleeve at the toe of the well. This system provided an extended lateral solution by helping to eliminate the need to drill out the baffles before starting the well on production.
The RapidStage ME sleeve system creates a multiple entry point completion design with greater efficiency and fewer interventions. Initial communication into the formation is achieved with the RapidStart Initiator CT sleeve. The opening of the Initiator sleeve allow the RapidBall DM (Dissolvable Metal) balls to be pumped down hole in order to activate the RapidStage ME sleeves.
The ball passes through the baffles of the RapidStage ME sleeves, exposing ports, and landing on the RapidStage single-entry sleeve.
RapidBall DM self-removing ball technology creates a temporary bottom plug that dissolves over time. During the frac, the ball provides a solid plug to direct the frac fluid into the open ports of the current stage, while isolating the stages below. Post frac, the ball dissolves to achieve production, without having to drill out the ball or baffle.
By combining RapidSuite systems, Seneca was able to reduce the downtime typically associated with wireline operations. This completion method also saved both time and money typically spent on workovers and coiled tubing, which require drilling out of these stages prior to putting the well on production.
RESULTS
The RapidStage ME system opened as designed and placed 100% of the sand while achieving the designed job rates. Solid ball signatures were achieved, verifying that all tools where open. By partnering with Halliburton, Seneca was able to save over six hours and reduce the risk often times seen in extended laterals when milling out conventional plugs.
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