JDMSC-A Stage Cementer
The I.D. of JDMSC-A stage cementer upper and lower sub is equal to that of casing, but smaller than that of closing sleeve, such structure can eliminate the possible damage to the closing sleeve during tripping or drilling out accessories.
JDSZ-A Hydraulic Stage Cementer
JDSZ-A hydraulic stage cementer can eliminate the need to use a freefall opening plug to open the circulation ports. JDSZ-A hydraulic stage cementer is applicable for various well deviations.
JDFZ-A Stage Cementer
The internal-closing structure and non-rotating closing sleeve design of JDFZ-A stage cementer can eliminate the possible damage to the closing sleeve when drilling out accessories.
JDFZ -B Stage Cementer
The external-closing structure of JDFZ -B stage cementer can eliminate the possible damage to the closing sleeve when drilling out accessories.
Stage Cementer Accessories
The accessories of stage cementer are shut-off baffle, first-stage plug , free-fall opening plug, closing plug, pump-down opening plug, all accessories are non-rotating.
Technical specifications of JDMSC-A Stage
Cementer
|
JDMSC-A Stage Cementer Specification (in)
|
7-5/8
|
7
|
5-1/2
|
|
Max. O.D. (mm)
|
283
|
208
|
172
|
|
Min. I.D (mm)
|
220
|
155
|
122
|
|
Overall Length (mm)
|
1,332
|
1,288
|
1,249
|
|
Rated Load (kN)
|
2,100
|
1,700
|
1,200
|
|
Sealing Capacity (MPa)
|
>25
|
>25
|
>25
|
|
Opening Pressure (MPa)
|
7
|
7
|
7
|
|
Closing Pressure (MPa)
|
5
|
5
|
5
|
Technical specifications of JDSZ-A Hydraulic Stage
Cementer
|
JDSZ-A Hydraulic Stage Cementer Specification (in)
|
13-3/8
|
10-3/4
|
9-5/8
|
7-5/8
|
7
|
5-1/2
|
|
Overall Length (mm)
|
1,250
|
1,250
|
1,222
|
1,290
|
1,288
|
1,249
|
|
Max. O.D. (mm)
|
384
|
310
|
282.5
|
230
|
208
|
172
|
|
Min I.D. (mm)
|
315
|
252
|
220.5
|
174.2
|
155
|
122
|
|
Opening Pressure (MPa)
|
15-17
|
|
Closing Pressure (MPa)
|
5
|
Technical specifications of JDFZ-A Stage
Cementer
|
JDFZ-A Stage Cementer Specification (in)
|
13-3/8
|
10-3/4
|
9-5/8
|
7-5/8
|
7
|
|
Overall Length (mm)
|
1,211
|
1,211
|
1,170
|
1,140
|
1,140
|
|
Max. O.D. (mm)
|
384
|
310
|
282.5
|
230
|
208
|
|
Min I.D. (mm)
|
315
|
252
|
220.5
|
174.2
|
157
|
|
Opening Pressure (MPa)
|
7
|
|
Closing Pressure (MPa)
|
5
|
Technical specifications of JDFZ-B Stage
Cementer
|
Specification (in)
|
13-3/8
|
10-3/4
|
9-5/8
|
7-5/8
|
|
Overall Length (mm)
|
|
|
Max. O.D. (mm)
|
384
|
310
|
282.5
|
230
|
|
Min I.D. (mm)
|
315
|
252
|
220.5
|
174.2
|
|
Opening Pres. (MPa)
|
7
|
|
Closing Pres. (MPa)
|
5
|
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