1. Breakout – SRL Horizontals
Title slide
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Norman W. Hein, Jr.; P.E.
Chief Technology Professional
NPS & Norris/AOT Group Companies

2. 2013 Sucker Rod Pumping Workshop
Discussion Summary
Attendees – Total = ~40; lasted ~1hour
28 operators
11 service/manufacturers
1 consultant
Where to put the pump (in vertical/above the curve, in the curve, pushed out in he horizontal)?
It depends on what drilling department left in the well
Normally below where the fluid level is
But in a place where the pump barrel length is straight
2013 Sucker Rod Pumping Workshop
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3. 2013 Sucker Rod Pumping Workshop
Horizontals Cont
Some not aware of ROT on placement and effect on failures that was developed from original SRL horizontals in the 80s
Put above the curve lowers production but has lowest failures
Put in the curve has some production increase but 2* failures
Put in the horizontal for max drawdown and production but 1.5 * failure than placed of above curve
2013 Sucker Rod Pumping Workshop
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4. 2013 Sucker Rod Pumping Workshop
Horizontals cont
Some in Canada aware of pump placement; but, really depends on what drilling department to drill especially the tangent; straight sub vs. bent sub
Speaking of drilling dept…
Most operators meet with drilling to discuss planning a well before drilling
But few had prerun rod string design software using plan to decide how it affected resulting side loads on rod string
This was important to some operators and one service company due to drilling from pads and potential for well interference especially where highest loads occur
2013 Sucker Rod Pumping Workshop
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5. 2013 Sucker Rod Pumping Workshop
Horizontals cont
Most didn’t know about controlling undulations while drilling the horizontal or considered the effect on production for the life of the well especially if gas produced
Almost all operators said wells in the future are planning to be horizontals with few verticals; but, some will be drilled depending on lease line position, infill/replacement
Orientation of well, toe up, two down, or horizontal depend on if oil or gas well, lease line, rock/ producing formation orientation; but some said economics determined toe down was best
2013 Sucker Rod Pumping Workshop
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6. 2013 Sucker Rod Pumping Workshop
Horizontals cont
What was being done for handling gas?
One operator waited for horizontal to produce awhile to clean up debris before running poor boy since pumps placed above cure while some used combination separator & tubing anchor that screwed into end of tubing
But there was concern about effect on equipment if solids (sand) produce; but, some ran old pump barrel as poor boy mud anchor
One operator looked further in the design for the separator Oryx ran with oriented /bent dip tube; found that a rubber hose was used while being placed in ~60o tangent
2013 Sucker Rod Pumping Workshop
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7. 2013 Sucker Rod Pumping Workshop
Horizontals cont
Self orientating separator was discussed and some had experiences operating this; but, found intake was normally smaller than normal pump intake which resulted in flow restriction and decreased production requiring setting expectations lower since only 50% successful
Related to gas separator was use to help rod pump controller work; needed slowing down N from 6 to 5 spm but then able to consistently detect pump off
2013 Sucker Rod Pumping Workshop
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Horizontal cont
Corrosion control for horizontals
Batch treating down annulus flush with produced fluid
Monitoring with coupons so chemical company not over treat
Use of sinker bars in horizontals
Having mixed results from an operator
Software recommends putting them in curve but operator concerned about increased wear
Ran design program with them installed above curve; but, resulted in program saying 1000 lbs compression
2013 Sucker Rod Pumping Workshop
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9. 2013 Sucker Rod Pumping Workshop
Horizontal cont
A service company rod string designer recommended running 300 to 500 feet max above the curve/kick-off; but, need to see if can design to reduce PPRL, especially by using smaller rod string
However no one said they validated rod string design after installing and pumping down the well to stabilized producing conditions
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2013 Sucker Rod Pumping Workshop

11. 2013 Sucker Rod Pumping Workshop
Copyright
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2013 Sucker Rod Pumping Workshop

12. 2013 Sucker Rod Pumping Workshop
Disclaimer
The following disclaimer shall be included as the last page of a Technical Presentation or Continuing Education Course. A similar disclaimer is included on the front page of the Sucker Rod Pumping Web Site.
The Artificial Lift Research and Development Council and its officers and trustees, and the Sucker Rod Pumping Workshop Steering Committee members, and their supporting organizations and companies (here-in-after referred to as the Sponsoring Organizations), and the author(s) of this Technical Presentation or Continuing Education Training Course and their company(ies), provide this presentation and/or training material at the Sucker Rod Pumping Workshop "as is" without any warranty of any kind, express or implied, as to the accuracy of the information or the products or services referred to by any presenter (in so far as such warranties may be excluded under any relevant law) and these members and their companies will not be liable for unlawful actions and any losses or damage that may result from use of any presentation as a consequence of any inaccuracies in, or any omission from, the information which therein may be contained.
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2013 Sucker Rod Pumping Workshop