Big hole charge is applicable to perforation operation in high and medium output reservoir. If it is used in low pressure, low permeability, heavy oil，poor lithology and sand bearing formation, productin can be significantly increased, its application prospect is wide and bright. At the same time, for some old oil fields, big entry hole diameter will help to inject polymers by reducing injection pressure, preventing destructing polymer chain.
Low debris perforating large is developed on account of the demand from both domestic and international market whose performance is nationally advanced, blending big hole size, deep penetration, and low debris together, which is first developed by us in China. The success of developing low debris perforating charge has already opened up a new field for charge research and development, and will make benefit for future oil and gas well perforating operation, both the oil and gas output and quality will be greatly improved.
There are totally 17 types of big hole charges whose performance datasheet is as follows:
|
No. |
Charge Type |
Casing O.D. (in.) |
Gun O.D. (in.) |
Phasing (°) |
Shot density (spf) |
Explosive Weight （g） |
Temp 2hr (°F) |
Temp 48hr (°F) |
Concrete Target |
|
|
EHD (in.) |
TTP (in.) |
|||||||||
|
1 |
BH44RDX25-2（127/40） |
7 |
5 |
135/45 |
12 |
25 |
325 |
＜250 |
0.75 |
10.24 |
|
2 |
BH44RDX25-1（114/40） |
5-1/2 |
4-1/2 |
135/45 |
12 |
25 |
325 |
＜250 |
0.75 |
9.82 |
|
3 |
BH44RDX25-1（102/26） |
5-1/2 |
4 |
135/45 |
8 |
25 |
325 |
＜250 |
0.75 |
9.82 |
|
4 |
BH46RDX43-1（140/30） |
7 |
5-1/2 |
135/45 |
9 |
43 |
325 |
＜250 |
0.63 |
21.66 |
|
5 |
BH46RDX43-1（127/20） |
7 |
5 |
135/45 |
6 |
43 |
325 |
＜250 |
0.63 |
21.66 |
|
6 |
BH46RDX45-1（178/40） |
9-5/8 |
7 |
135/45 |
12 |
43 |
325 |
＜250 |
0.59 |
25.59 |
|
7 |
BH46RDX45-1 （Less Debris 178/40） |
9-5/8 |
7 |
135/45 |
12 |
43 |
325 |
＜250 |
0.59 |
23.62 |
|
8 |
BH48RDX25-1（127/40） |
7 |
5 |
135/45 |
12 |
25 |
325 |
＜250 |
0.87 |
10.63 |
|
9 |
BH48RDX45-1（140/24） |
7 |
5-1/2 |
135/45 |
7 |
25 |
325 |
＜250 |
0.71 |
22.09 |
|
10 |
BH51RDX45-1（178/40） |
9-5/8 |
7 |
135/45 |
12 |
45 |
325 |
＜250 |
0.75 |
23.62 |
|
11 |
BH51RDX45-1 （Less Debris 178/40） |
9-5/8 |
7 |
135/45 |
12 |
45 |
325 |
＜250 |
0.75 |
21.66 |
|
12 |
BH54RDX35-1 （Less Debris 140/40） |
7 |
5-1/2 |
135/45 |
12 |
35 |
325 |
＜250 |
0.96 |
8.66 |
|
13 |
BH54RDX25-1（127/40） |
7 |
5 |
135/45 |
12 |
25 |
325 |
＜250 |
0.79 |
8.66 |
|
14 |
BH59RDX38-1（140/32） |
7 |
5-1/2 |
135/45 |
10 |
38 |
325 |
＜250 |
1.10 |
9.06 |
|
15 |
BH61RDX43-1（178/40） |
9-5/8 |
7 |
135/45 |
12 |
43 |
325 |
＜250 |
0.75 |
17.72 |
|
16 |
BH61RDX43-1（127/13） |
7 |
5 |
90 |
4 |
43 |
325 |
＜250 |
1.13 |
9.84 |
|
17 |
BH61RDX43-1（102/13） |
5-1/2 |
4 |
90 |
4 |
43 |
325 |
＜250 |
0.98 |
11.81 |
