API RP 11AR Recommended Practice for Care and Use of Subsurface Pumps
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API RP 11AR Document Information:
Title
Recommended Practice for Care and Use of Subsurface Pumps
American Petroleum Institute
Publication Date:
Jun 1, 2000
Scope:
The intent of this recommended practice is to give information
on the proper selection, operation and maintenance of subsurface
pumps so the best economical life can be obtained.
The basic walking-beam sucker rod combination for producing
fluids from the ground had its beginning in very early history. In
more recent times, many advances in design and metallurgy have
evolved. The method is so popular that today approximately 90
percent of all artificially lifted wells are produced by a sucker
rod pump.
The downhole sucker rod pump is only one portion of the pumping
system (see Figure 1). The other major components are the sucker
rod string, the surface pumping unit and the prime mover. For
proper pumping operation and long maintenance-free runs, all
components of the system must be designed and sized properly,
taking into account well depth, the amount and viscosity of fluids
(oil, water or gas) to be produced, and abrasiveness and
corrosiveness of fluids. A failure of any one of the pumping
components will result in a shut down of the system, resulting in a
costly repair, down-time and possible loss of production.
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