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Thursday, September 3, 2015

Zavanna Gas Lift -- September 3, 2015

I was in a rush to do this -- going off to soccer; there will be factual and typographical errors in a long note like this. If this is important to you, go to the source. A huge "thank you" to a reader for alerting me to this well, another great example of ... well, you will see. 

First, as a reminder, look at this earlier post.

Now, on to this well:
  • 24543, 1,086, Zavanna, Bear Cat 33-28 1H, Williston, t4/13; cum 259K 7/15; unfortunately with current slump in oil prices and restrictions on flaring, we do not know to what extent this well might be choked back at the present time; unfettered, one can only imagine what this well could produce.
First, the production profile:

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN7-2015251004792281092422896195882935
BAKKEN6-20153014074131971835131457261384872
BAKKEN5-20152716195153072428427392206106380
BAKKEN4-20152790708552193001007584501223
BAKKEN3-2015137012668415193796507771
BAKKEN2-201583628333318858301002891
BAKKEN1-20150000000
BAKKEN12-20140000000
BAKKEN11-20140000101
BAKKEN10-20140050000
BAKKEN9-2014002480000
BAKKEN8-20147205331537335615994
BAKKEN7-20143110668108476865946248804120
BAKKEN6-201430123041139174381110519510463
BAKKEN5-201414599058904727517315333431
BAKKEN4-201426982895977147964871662095
BAKKEN3-20141210520107146168892320276718
BAKKEN2-20140000000
BAKKEN1-20140000000
BAKKEN12-201314572346923332419304193
BAKKEN11-201329114451107875601142885392457
BAKKEN10-201331138621381689521413313498173
BAKKEN9-2013301450114682960014218142180
BAKKEN8-2013311454013946973414136141360
BAKKEN7-20133118467181541255019061190610
BAKKEN6-20133023100232731560525093193105336
BAKKEN5-201331245642369917734248761064913765
BAKKEN4-20131621564208643396519823019823

So, let's see if the file report shows what was going in last summer / autumn / winter (2014).

The well was returned to production on/about February 16, 2015, when the work was completed: workover rig to place/set gas lift packer assembly.

Shortly before that, a request to commingle: #24543, #25553, and #25552. (I will look at those again later.)

From a sundry form dated on/about November 3, 2014:  "Zavanna will install a gas lift on the Bear Cat multi-well pad location. Estimated January, 2015. With gas lift, we no longer use sucker rods. The tubing has been run with a packer on bottom to prevent flow up the casing annulus and gas lift mandrels/valves at specific depths in the tubing. A high pressure gas line has been run to the wellhead to inject gas down the casing annulus. Gas will go from casing to tubing through the gas lift mandrels/valves and will use gas as the drive for fluid lift. A pumping unit will no longer be required  while on gas lift."

Prior to that, well taken off-line for fracking other wells in the area.

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