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Tuesday, December 3, 2019

Random Update Of The Antelope Oil Field -- In Progress -- December 3, 2019

The Antelope oil field is tracked here.

Size:
  • There are 77.5 sections in that oil field
    • 76 are 640-acre sections (or thereabouts)
    • 3 are half-sections (320 acres or thereabouts)
  • Total: 49,600 acres
  • A rectangle of 10 sections by 8 sections would be 80 sections
    • A section is a mile x a mile
    • Therefore, if the field were a perfect rectangle, it would be about 10 miles x 8 miles.
Spacing:
  • there are six 320-acre spacing units
  • there are ten 640-acre spacing units
  • other than the 320-acre units and the 640-acre units, the rest are 1280-acre units
  • it appears most of the field is also spaced with overlapping 2560-acre units 
There are currently 294 wells in the Antelope oil field.

49,600 acres / 294 wells = one well for every 168.71 acres, or about four wells for every section, or eight wells in every 1280-acre spacing unit.

Monthly production in most recent report: 1,395,082 bbls/month, or 46,502 bopd.

1,395,082/294 =  4,745 bbls//month/well.
 
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From the NDIC monthly production database, September, 2019, data, most recent data available:

In that field the following operators have this number of wells, September, 2019, production in bbls:
  • Bruin: 58 -- 358,406 bbls --
  • BR: 1 -- 4,252 bbls --
  • CLR: 41 --42,421 bbls --
  • Enerplus: 29 -- 124,810 bbls --
  • EOG: 9 -- 61,088 bbls --
  • Hess: 66 -- 187,500 bbls --
  • MRO: 45 -- 219,009 bbls --
  • Petrogulf: 4 -- 11,898 bbls --
  • PetroShale: 6 -- 99,118 bbls --
  • White Butte: 3 -- 6,776 bbls --
  • WPX: 21 -- 201,788 bbls --
  • XTO: 11 -- 78,016 bbls  --
PetroShale's six wells (permit number) and cum and production/most recent month (all six wells are in section 17-152-94; all are 1280-acre spacing except for #11686, quarter section):
  • 33010, 1,391, PetroShale, PetroShale US 12H, t8/19; cum 71K 10/19; 32,703 bbls,
  • 33204, 1,934, PetroShale, PetroShale US 13H, t5/19; cum 118K 10/19; 36,327 bbls,
  • 33005, 1,560, PetroShale, PetroShale US 3H, t3/18; cum 408K 10/19; 11,128 bbls,
  • 33004, 537, PetroShale, PetroShale US 4H, t3/18; cum 319K 10/19; 10,685 bbls,
  • 32767, 2,759, PetroShale, PetroShale US 8H, t1/17; cum 480K 10/19; 7,576 bbls,
  • 11686, 1,82, PetroShale, Pronghorn 1, t12/85 (no typo: December, 1985); cum 175K 10/19; 699 bbls; spacing: 160 acres; vertical well; F;
Sorted by production / well / most recent month:

Operator
Wells
Crude Oil
Bbls/Well/Month
PetroShale
6
99,118
16,520
WPX
21
201,788
9,609
XTO
11
78,016
7,092
EOG
9
61,088
6,788
Bruin
58
358,406
6,179
MRO
45
219,009
4,867
Enerplus
29
124,810
4,304
BR
1
4,252
4,252
Petrogulf
4
11,898
2,975
Hess
66
187,500
2,841
White Butte
3
6,776
2,259
CLR
41
42,421
1,035

From the file report, #11686:
  • operator at time of initial spud: General Atlantic Energy Corporation
  • an 80-acre infill well on the Antelope Anticline 
  • a vertical well; not fracked
  • spud date: October 23, 1985
  • cease drilling: November 25, 1985
  • General Atlantic holds the rights only to the Bakken-Sanish. Deeper and shallower pays are held by Amerada.
  • TD: 10,535 feet 
  • open hole completion from 10,430 feet to 10,535 feet
  • IP: 182.5 bbls/24 hours
  • 1992: transferred to Ranch Operating Company from Presidio Exploration
  • July 6, 1995: meets criteria for stripper well status
  • November 13, 2013: letter stating that the well had been re-entered; drilled an additional 20 feet, and perforations shot from 10,520 - 10,533 feet and 10,556 - 10,571 feet
  • May 19, 2016: transferred from Ranch Oil Co. to PetroShale (US) Inc
  • last sundry form of note 
  • status: still flowing;

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