“DBF” DESP Packer

Date: 18 Mar 2009
I.   Summary
    This packer is a hydraulic set, bi-directional slip anchored and upstrain unset tool, which consists of packer sealing part, locking part, setting part, anchoring part and unsetting part. It is desighed to seal the annulus space between the tubing and the casing, provide crossing channels for the cable and the piezometric tube, and discharge the casinghead gas or clean out the well associated with the exhaust valve. This packer is applicable to electric pumping wells including vertical well, inclined well, directional well etc., or wells that is of special requirements for the annulus space. 
    Being used, pull tension on the tubing from wellhead to the stated value after setting the packer down to the desired position, open slips and compress the rubber tube to seal the annulus space between the tubing and the casing. At the same time, locking mechanism is locked to ensure that the rubber tube is sealed for long time. While unsetting, pick up the tubing to set-down weight (exceeding original weight load), and the packer is then unset.
 
II.  Main technical parameters
Specifications
DBF-118
DBF-152
DBF-210
Max. O.D.(mm)
118
152
210
Min. I.D.(mm)
35
60
76
Setting pressure difference
(MPa)
18
18
18
Sealing pressure difference
(MPa)
20
20
20
Unsetting load(kN)
120
120
150
Max. O. D. of Elements(mm)
116
151
208
Working temperature(℃)
≤150
≤150
≤150
Total length(mm)
900
900
1100
End connection*
23/8 TBG
27/8 TBG
31/2 TBG
 
Contact information:
Company:
Address:
Zhejiang Weiqixin Petroleum Machinery Co. Ltd
No.98 Shuanggang Road Yuhuan County, Zhejiang[317600]
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