Difference between revisions of "Category: Enhancement List"

From wiki.pengtools.com
Jump to: navigation, search
(WHP and WOP)
(WHP and WOP)
Line 53: Line 53:
 
</table>
 
</table>
  
 
+
Note: You can't get [[JD]]=1.27 for high permeability wells. Use the [[optiFrac]] to estimate the [[JD]].
"WO POTENTIAL" is calculated by using the largest tubing practical that will fit in the current well bore with a WHP equal to current line pressure.
 
 
 
две ветки:
 
flowing (tub, ann, tub+ann)
 
not flowing (или ESP или PCP и тп)
 
две категории:
 
ENHANCED
 
WO ENHANCED
 
по flowing:
 
ENHANCED - так же как в Gas Enh List
 
WO ENHANCED - AOF
 
по not flowing:
 
ENHANCED - считаем BHP при Hd=Htub, считаем ql для этого BHP через IPR
 
WO ENHANCED - AOF
 
для JD при расчете AOF:
 
GAS - if JD<0.13 JD=0.13 else JD
 
OIL - if JD<1.27 then JD=1.27 else JD
 
 
 
Misha, I think that we need two
 
potential calculations(columns)
 
for flowing wells:
 
 
 
1. "WHP POTENTIAL" is calculated
 
      by by setting the WHP equal
 
      to the current line pressure at the
 
      well head. Use estimated current
 
      Jd.
 
 
 
2. "WO POTENTIAL" is calculated by
 
      using the largest tubing practical
 
      that will fit in the current well bore
 
      with a WHP equal to current line
 
      pressure. Use a Jd ~ 0.13. The
 
      assumption is that we will mitigate
 
      the current skin with better
 
      completion during the workover.
 
      The largest tubing size is
 
      approximately the casing drift
 
      diameter minus the tubing
 
      coupling diameter > 0.75
 
      Inches for clearance. Then
 
      convert this to the nearest
 
      standard tubing OD, 2 7/8, 3 1/2,
 
      4, 4 1/2, 5, 5 1/2, 6, 6 5/8, 7,
 
      7 5/8, etc,
 
 
 
The potential gap should be sorted
 
based on the "WHP POTENTIAL"
 
since this is the easiest and cheapest
 
enhancement to execute.
 
 
 
Your horseshoe should be based
 
on the "WO POTENTIAL" since this
 
Is the actual potential of the currently
 
constructed well bore.
 
 
 
You should always display AOFs
 
in one of the columns.
 
 
 
These rules apply to all flowing
 
wells unless the workover installs
 
artificial lift of some sort.
 
 
 
Artificial lift is a different sheet and
 
we can spec it later, since it doesn't
 
apply to us at this time.
 
 
 
 
 
There should be on two categories,
 
current and enhanced.
 
 
 
Enhanced is Jdfrac=1.0, Pwf=fluid
 
level at pump depth, Pipe=big.
 
 
 
If enhanced q > all lift capacities
 
that good, must engineer a higher
 
performance system.
 
 
 
For enhanced we used the AOF at
 
Yukos.
 
 
 
Need to develop a simple algorithm
 
for Jd. You can't get Jd=1 for high
 
k wells. Look at Cfd vs Np, etc to
 
develop simple "estimate" algorithm.
 
  
 
[[Production Potential]] is used to rank the [[Enhancement | Enhancements]].
 
[[Production Potential]] is used to rank the [[Enhancement | Enhancements]].

Revision as of 11:17, 13 July 2018

Brief

Enhancement List is a workflow for identifying the performance gaps based on the Gap Analysis.

The workflow produces the Enhancement List which is a ranking of the Enhancements with the best on the top.

Routine execution of the identified Enhancements unlocks the pathway to Production Potential and results in more production, improved recovery and increased earnings.

Enhancement List

Workflow

First Production Potential is calculated:

WHP and WOP

  • Wellhead Potential (WHP) - is the maximum rate that can be achieved with existing well equipment with no workover (Choke open, Speedup the ESP, etc).
  • Workover Potential (WOP) - is the maximum rate that can be achieved with workover. The assumption is that the current skin will be mitigated with better completion during the workover. And the largest tubing practical that will fit in the current well bore will be used.

Below is the Production Potential calculation logic of the E&P Portal:

Well Primary Fluid Well Operating Type Wellhead Potential (WHP) Workover Potential (WOP)
Gas Flowing Calculated with Nodal Analysis using the PQplot by setting the flowing wellhead pressure (FWHP) equal to the current flowing line pressure (FLP) at the well head.
Use the current value of JD.
Calculated with Nodal Analysis using the PQplot by using the largest tubing practical that will fit in the current well bore with a FWHP equal to the current FLP. The largest tubing size is approximately the casing drift diameter minus the tubing coupling diameter > 0.5 inches for clearance (see Pipe Catalog).
Use JD=0.13.
Oil Flowing Calculated the same way as for the Gas Flowing case Calculated as absolute open flow (AOF).
Use JD=1.27.
Oil Artificial Lift (ESP, Rod Pump, PCP) Calculated by setting the flowing bottomhole pressure (Pwf) equal to the fluid level at the pump depth.
Use the current value of JD.
Calculated as absolute open flow (AOF).
Use JD=1.27.
Note: If WOP > all lift capacities thats good, must engineer a higher performance system.

Note: You can't get JD=1.27 for high permeability wells. Use the optiFrac to estimate the JD.

Production Potential is used to rank the Enhancements.

Pages in category "Enhancement List"

The following 5 pages are in this category, out of 5 total.