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05.10.2021

BVT Pioneers Testing of Small-Sized Expendable Perforator to API Test Method among all Russian Manufacturers of Perforating Tools

From September 20 to 25, 2021, JSC “BVT” performed another round of tests using the API RP 19B method.

BVT is the first of all Russian manufacturers of perforating tools to test small-sized expendable perforators Link43-AT and Link54-AT with ZPK43-AT and ZPK-54AT charges according to API RP 19B test method, as well as to perform tests of small-sized expendable strip perforation systems Strip43-АТ and Strip54-АТ with ZPK43-AT and ZPK-54AT charges.

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This equipment, manufactures at requests from Russian and overseas customers allows performance of perforation jobs with high precision in 60 and 73 mm tubing in slim holes. The table below gives parameters of perforation systems and results of tests published on the American Petroleum Institute website:

Charge type

Perforation
system

Production string
size, mm

Weight of explosives, g.

Hole diameter as per API Act, mm

Concrete penetration depth as per API Act, mm

ZPK43-AT

Link43-AT

114

9,7

6,31

510

ZPK54-AT

Link54-AT

146

12,7

8,55

761

ZPK43-AT

Strip43-AT

114

9,7

6,73

518

ZPK54-AT

Strip54-AT

146

12,7

8,47

659

Small-sized expendable perforators Link43-АТ, Link54-АТ and small-sized expendable strip perforators Strip43-АТ, Strip54-АТ have the following advantages as compared to other small-sized perforation systems:

  • Simple design;
  • Reliability of assembly and operation;
  • Improved penetration capacity to expose productive formations.

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Besides, the tests included the firing of the small-sized perforation system PKO38-АТ with high-temperature charges ZPK38-АТ-М-03 Т with the following results obtained as per API RP 19B test method:

Charge type

Perforation system

Production string size, mm

Weight of explosives, g

Hole diameter as per API Act, mm

Concrete penetration depth as per API Act, mm

ZPK 38-АТ-М-03 Т

PKO38-AT

73

3,5

5,62

257

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This equipment may be used for the following tasks:
- Exposure of productive formations with bottom-hole assemblies run on wireline or coiled tubing through 60 mm production string with drift diameter of 48 mm and above;
- Making windows in the 60 mm tubing assembly to restore circulation using the ‘hole puncher’ charge.





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