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JUAN ORTEGONJUAN ORTEGON
Issues with Rod Pumping Wells Completed in Shale Formations
2010 ALRDC 2010 ALRDC
Major Challenges
Horizontal/Deviated Wellbores
Pump Depth (Placement)
Solids (SAND!!!)
Gas Interference
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Horizontal Wells
Vast majority of wells in shale plays are “non-vertical” multi-stage completions
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Pump Placement
Optimal Pump Placement?
KOP (vertical section above KOP)
Tangent Section (ex. 50° - 60°)
Lateral (90°)
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Solids
Solids such as sand increase pump failures and sand tolerant pumps (i.e. loose fitting & or trash pumps) ultimately effect pump efficiencies
Possible Solutions
?
?
?
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Gas Interference
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Vertical Wells
Not enough rat hole
Pumping above perfs to get away from solids
Horizontal Wells
Always above perfs
High GLR
Breakout Summary
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Discussion was geared towards horizontal and highly deviated wells as majority of new and future activity revolves around non-vertical wells.
Group brought up that in effort to have a successful chance of being able to rod pump, the best conditions have to be set initially, thus calling for more and improved communication between the drilling goups and production engineers.
Pump placement was briefly discussed as it appeared that most operators usually set pump in the vertical section although an operator in the Bakken Shale stated they are pumping wells in the 60deg marker will relatively some success although noting there are risks are associated with it.
Major discussions regarding the lack of technology to combat major issues with shale wells being both gas and high sand producing plays.
With many individual tools in the market today to handle such issues as gas separation and sand handling, there is still no “magic bullet”!
Breakout Summary
2010 ALRDC 2010 ALRDC 2010 ALRDC 2010 ALRDC
Service companies and pump manufactures need to foresee the need for pumps to handle the numerous variables associated with horizontal wells.
Operators need to be willing to share information regarding success and failures with any new technology.
Verdict is still undecided on the ability for rod pumps to be utilized for shale formations which consist of highly of horizontal wells.