CoFrac Field Tests

//CoFrac Field Tests

COFRAC FIELD TESTINGS

CoFrac™ has been utilized on more than 5,000 vertical wells in Chinese reservoirs with very low natural permeability, similar to USA unconventional reservoirs. Below are the results of three field testings.

Field-Test-New-Wells

7 New Wells

4 wells – CoFrac™ Perforating System 3 wells – Conventional Perforating

* Fracturing equipment and procedures were the same for both groups.

Results:

CoFrac™ Perforation System had higher initial production. Avg. 65.7 bbls/day for the first 7 days.

Conventional 35 bbls/day avg. over 7 days.

CoFrac™ 30.7bbls/day higher, 88% increase

CoFrac™ System had a slower decline rate. Day 8 to 25 avg. 36.4 bbls/day.

Conventional only 25.7 bbls/day. CoFrac™ 10.7 bbls/day higher, 42% increase

After day 25, avg. CoFrac™ 35/day; Conventional 15 bbls/day.

CoFrac™ 20 bbls/day higher, 133% increase

Field-Test-Refrac

12 Well Refrac Performance Evaluation

7 wells – Composite Perforating System 5 wells- CoFrac™ Perforating

* Fracturing equipment and procedures were the same for both groups.

Results:

CoFrac system had higher initial production. Avg. 23 bbls/day for the first 7 days.

Conventional avg. 16.8 bbls/day over 7 days.

CoFrac™ 6.2 bbls/day higher, 37% increase

CoFrac™ Perforating System had a slower decline rate. Day 8 to 25 avg. 9.6 bbls/day.

Conventional 7.5 bbls/day.

CoFrac™ 2.1 bbls/day higher, 28% increase

After day 25, avg. CoFrac™ 8.9 bbls/day, Conventional 6.1 bbls/day.

CoFrac™ 2.8 bbls/day higher, > 46% increase

Extended-Field-Test

Extended Test over 34 months

From 2009 to 2012, Ganguyi Oilfield selected 6 wells in the same formation and area and conducted a comparison test.

Under the same well conditions, oil production was monitored for 34 months for 3 wells completed with CoFrac™ perforator and 3 wells with Conventional perforator.

CoFrac™ perforating system wells had higher initial oil production and slower decline rates. For 34 months period, total production was 31,191 bbls for CpFrac™ wells, and 9,424 bbls for Conventional wells, an increase of 21,767 bbls (+231%).

Download Results in PDF
2019-04-18T00:16:07+00:00