American Oil and Gas Reporter - June 2017 - 90

RPOT Logic Diagram
Master Table
* Production
* SCADA
* Equipment

FIELD-INSTALLED

CENTRALIZERS/
PARAFFIN SCRAPERS

Full-circle Wiping
of Tubing I.D.
More Gripping
Force on Sucker Rods
More Fluid Flow-by
Volume
Longer Useful LIfe
from Longer Vanes
& Bearing Surfaces

Is system over-, under-,
or correctly sized?
o design rt. vs. well test
Yes o optimal rate (from PI)
o design rt. (at max
allow. PRV)
o cycles
o runtime
No ROA: QC [well test,
SCADA, and/or
equipment] data

Positive Wear
Indicators
Amodel with Glass Fill
CALL 1-800-LES WEAR
(800-537-9327) OR YOUR
Oilfield Supply Store

www.rodguides.com
®

1902 N. Yellowood Ave.
Broken Arrow, Oklahoma 74012 U.S.A.

Oilfield Improvements

Is data
reliable?
o missing,
null or
unreasonable
values

User Inputs
* Assumptions
* Targets
* Costs

®

WHEELED ROD GUIDE®
COUPLINGS
For Deviated,
Directional and
Horizontal Wells

What variable(s) can
be adjusted?
o SPM
overo motor sheave
o unit sheave
o pump-off timer*
o stroke length*
o pump size
What variable(s) can
be adjusted?
o SPM
undero motor sheave
o unit sheave
o stroke length*
o pump size
o lift method
correct ROA: No immediate
action

veillance of the RPOT. To avoid overad-

off timer is omitted because the subject

justing a system, ROAs recommend

wells freeze in cold-weather months if

changes to only one variable at a time.

the duration of the pump-off timer is set

For example, if a beam-unit well ex-

too long. These types of modifications

periences an increase in inflow to a level

are a result of feedback from the field

where a pump upsize appears necessary,

teams and subject matter experts after

the logic calls for the well to be sped up

using the RPOT.

to the maximum allowable PRV as a first

The asterisks in Figure 3 signify sec-

step (if initially below the maximum al-

tions of the logic that are omitted inten-

lowable). As new data flow into the RPOT

tionally. Logic is easily adjusted by editing

post-speedup, further calculations are per-

the "calculated column" expressions in

formed to determine whether the pump

the analysis file. Creating adjustable user

upsize is still necessary.

inputs minimizes the amount of hard-

There are two exceptions in the logic
where ROAs call for changing more
than one variable. The first is recom-

Wheels are
Field-replaceable

®

1902 N. Yellowood Ave.
Broken Arrow, Oklahoma 74012 U.S.A.
PHO 918-250-5584 * FAX 918-250-4666

90 THE AMERICAN OIL & GAS REPORTER

*intentionallly omitted from RPOT logic

logic for increasing/decreasing the pump-

mending changing both the unit and mo-

www.rodguides.com

ROA's:
1. Speed up by_SPM
2. Inc. stroke length*
3. Upsize to_in. [insert/tbg] pump
* and slow down by_SPM if
above max. allow. PRV
4. Convert-to-rotaflex
5. Convert-to-ESP

ative process that requires continued sur-

Used Successfully for Over
27 Years by Over 90% of
Major Oil & Gas Companies
in Over 40 Countries -
Onshore and Offshore

Call
800-537-9327
or Your Oilfield
Supply Store

ROA's:
1. Slow down by_SPM
* Decr. motor sheave by_in.
* Incr. unit sheave by_in.
* Decr. motor sheave by_in.
& incr. unit sheave by_in.
2. Inc. pump-off timer*
3.Decr. stroke length*
4. Downsize to_in. pump

COSTS

ULTRA-FLOW®

FIGURE 3

COSTS

Oilfield Improvements®

coding in the logic to provide flexibility
to users.
Interactive Visualization

tor sheave because a well's equipment

Simple, easy-to-understand data vi-

is so drastically oversized that changing

sualizations are critical to enabling users

one variable will not make enough of

to make faster and better decisions in op-

an impact on the targeted production

timizing the rod-pumped wells. The RPOT

rate. The second exception is when a

summarizes data from 12,500 rows and

pump upsize and a decrease in pumping

100 columns (1.25 million cells) in a

speed are recommended for an undersized

single page/window containing five vi-

system that is operating above the max-

sualizations.

imum allowable PRV.

When user inputs are changed and

All ROAs are performed as point-for-

wells/items are marked, visualizations

ward calculations using the most recent

are updated instantaneously. The goal of

day's data for a given well. Calculations

the condensed, succinct visualizations is

and logic are based on industry standards,

to minimize clicking and changing be-

with some minor modifications to fit

tween tabs/pages so that more time is

Denbury's operating strategy. For example,

spent understanding variable relationships
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American Oil and Gas Reporter - June 2017

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