Specifications

1.DSG-A type
2.All accessories are non-rotating and made of easily drillable materials.

Features:

1. The I.D. of upper and lower sub is equal to that of casing, but smaller than that of closing sleeve, eliminating the possible damage to the closing sleeve during tripping or drilling out accessories.

2. All accessories are non-rotating and made of easily drillable materials.

3. A Pump-Down Opening Plug instead of a Free-Fall Opening Plug can be used for a continuous two-stage cementing operation.

 

Detail Specification:

Technical specifications and parameters for DSG-A Stage Cementer
Specification(in)	7 5/8”	7”	5 1/2”
Overall length(mm)	1332	1288	1249
Max. O.D(mm)	283	208	172
Min. I.D(mm)	220	155	122
Rated Load(KN)	2100	1700	1200
Sealing Capacity (Mpa)	above 25	above25	above25
Opening Pressure (Mpa)	7Mpa
Closing Pressure (Mpa)	5