Continuous-Rod Strings Replace Guided Conventional Rods, Increase Average Time Between Failures by Over 600%, read more here.
This technology's growth is likely to continue as the industry strives to maximize production from mature and unconventional reservoirs through deeper deviated wells with longer laterals.
by Harvey Verstraete & Alex Perri (Dover Artificial Lift)
In heavy oil and other unconventional plays, the majority of new wells producing today are deviated from vertical. Deviated well profiles—which include directional, horizontal and slant well trajectories—place greater operational demands on artificial lift systems. For rod lift, the rod and tubing strings are in close physical contact in deviated wells, creating an abrasive environment that threatens their operating life.
- See more at: http://www.upstreampumping.com/article/january-february-2015/2015/new-supply-service-options-extend-continuous-rods-reach#sthash.UV8a2Y8a.dpuf
This alternative to sucker rods improves production in unconventional plays.
by Ryan Orr, Weatherford
Historically, the vast majority of artificial lift deployments have been in vertical wells that produce oil and gas from conventional reservoirs. The last few decades, however, have brought a dramatic shift to both conventional and unconventional oil and gas production from deviated wells, including horizontal, S-shaped and slant well trajectories. Deviated wells have presented a major challenge for artificial lift operations—including the accelerated wear of downhole equipment and tubing. The friction between the tubing and the rod string can wear holes in the tubing, which leads to production delays and costly, time-consuming repairs and equipment replacement.
- See more at: http://www.upstreampumping.com/article/production/2014/continuous-rod-strings-enhance-artificial-lift-deviated-wells#sthash.BA9i9VIn.dpuf