CHINA SCOTON OILFIELD EQUIPMENT CO., LTD.

Perforating Gun

Perforating Gun


Perforation is an extremely important technique in petroleum exploration and recovery engineering, a major means of enhancing the recovery factor of gas and oil wells and also a typical method of tapping the potential of existing oil fields and increasing output. Perforation completion is widely used in China and abroad and accounts for about over 90%of all well completions. Almost all reservoir beds can be opened by this method. In the method  in the course of gas and oil field exploitation the production casing is lowered and cemented  and then special perforation instrument and devices are sent down to the predetermined depth and aimed at the target layer. The perforator down in the well is ignited from ground and the  the lined cavity charge is ignited which result in the detonation wave  to transmit forward at a velocity of 7~8 kmper second and high temperature and high pressure shock waves are generated which penetrate though the casing, cement sheath and enter the stratum forming a hole canal, as illustrated by the diagram. Whichever perforation method you use, the performance and quality of the perforating gun( Including the perforating gun pipe) shall have a significant influence on the perforation quality of gas and oil wells.


Through Tubing Perforator(TTP)
Description
The through-tubing swing jet perforator is designed to perforate in WCP. It can convey big charges through tubing to producing formation. Then the releasing detonator is detonated by an electric current to unlock the trigger, and charges swing out to be normal to axis of guns. In this case the formation could be perforated with big charges.

Benefits / Capabilities
Can re-perforate in old well without pulling the tubing out.
Can be used with big charges to achieve deeper penetration.
Firing circuitry is in short before the charges are released.

Specifications

No.

Type

OD(mm)

Casing size

1

ST43TTP9

43

1 11/16”

2

ST51TTP12

51

2”

3

ST54TTP15

54

2 1/8”

4

ST63TTP18

63

2 1/2”



Fracturing Perforator
The fracturing perforator combines perforator and propellant in one single operation. When the charges are detonated, the high temperature would ignite the propellant, result in two more high pressure wave, contentiously impact the stratum and create short fractures near the perforation tunnel. This could achieve the purpose of improving the permeability of stratum. There are two types: Intergraded type and Sleeve type.

Feature and Benefits
Improved production or injectivity

Pre-acid or hydraulic fracturing treatment
One type of stimulation treatment

Specifications

No.

Perforator Type

O.D.
(mm)

Depth
(mm)

Fracturing

Width
(mm)

Casing Size
(g/Shoot)

Temperature Rating
(℃/48h)

1

ST73SK86

86

≥400

≥120

127

160

2

ST86SK102

102

≥450

≥140

140

160

3

ST102SK117

117

≥550

≥170

177.8

160

4

ST114SK130

130

≥650

≥190

177.8

160



Scalloped Gun
We research and manufacture various types and sizes Scalloped Gun perforators that include Scalloped Gun, StimGun, Fullbore and horizontal well perforator.
We could provide all the auxiliaries of perforator such as top sub, tandem, bull plug etc.
We research and manufacture all the explosives for perforating.

Specifications

No.

Type

O.D.(mm)

1

ST51SK7

51

2

ST60SK9

60

3

ST68SK12

68

4

ST73SK16

73

5

ST83SK25

83

6

ST86SK25

86

7

ST89SK25

89

8

ST102SK32

102

9

ST114SK35

114

10

ST127SK35

127

11

ST102SK45

102

12

ST121SK45

121

13

ST127SK45

127

14

ST178SK45

178


Horizontal Perforator
Oriented perforators orient accurately. There are two type: external orienting and internal orienting, Sizes are available on request. The operation is sale and reliable.

Specifications

No.

Type

O.D.(mm)

Shot Density

Oriented Accuracy(*)

Pressure Rating (MPa)

Deflection

(* / m)

1

73SH

Ф73

10-18

±5

105MPa

30/60

2

83SH

Ф83

10-18

±5

140MPa

30/60

3

86SH

Ф83

10-18

±5

140MPa

30/60

4

89SH

Ф89

10-18

±5

140MPa

30/60

5

102SH

Ф102

10-18

±5

105MPa

30/60

6

114SH

Ф114

10-18

±5

105MPa

30/60

7

127SH

Ф127

10-18

±5

105MPa

30/60


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  • TEL:+86-029-62827813
  • FAX:+86-029-62827812
  • EMAIL:sales@scotonpetro.com
  • ADDRESS:Hi-Tech Development zone, Xi'an China