Multi-ring metal framework seal anchoring member, patching pipe member and mounting device
A skeleton sealing and installation device technology, applied in wellbore/well parts, earthwork drilling and production, etc., can solve the problems of inability to seal the small concave-convex surface of the inner surface of the casing, unstable pressure bearing performance of the seal, and limited bonding ability, etc., to achieve Improve the overall sealing effect, improve the pressure bearing performance of the seal, and the effect of small volume expansion rate
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Embodiment 1
[0037] combine figure 1 , the multi-ring metal skeleton anchoring mechanism of this embodiment includes a coaxially connected sealing expansion zone 1 and a connecting buffer zone 2, the sealing expansion zone 1 is a plurality of metal expansion rings 1-2 coaxially arranged on the surface of the pipe body, The vulcanized rubber expansion ring 1-1 between the adjacent metal expansion rings 1-2, the connection buffer zone 2 is a pipe body structure, and the connection buffer zone 2 is specifically a pipe body made of the same material as the metal expansion ring 1-2;
[0038] The tensile strength of the expanded rubber is 3-9MPa, the volume expansion ratio of the expanded rubber is 250%-350%, the hardness (Shore A) of the expanded rubber is 55-85, the metal expansion ring 1-2 and the connection buffer zone 2 The production material is 20# low carbon steel;
[0039] The number of metal expansion rings 1-2 is 5, the width of metal expansion ring 1-2 is 2.5 mm, the thickness of me...
Embodiment 2
[0051] The difference between this embodiment and embodiment 1 is:
[0052] According to the above situation, the tapers of the upper taper sleeve 5 and the lower taper sleeve 6 are designed to be 3° respectively, the number of metal expansion rings 1-2 is 4, the width of the metal expansion ring 1-2 is 3 mm, and the metal expansion ring 1 -2 has a thickness of 4mm, the expansion rubber ring 1-1 has a width of 3mm, and the expansion rubber ring 1-1 has a thickness of 3mm;
[0053] The multi-ring skeleton coated expansion rubber anchoring structure obtained by using the above parameters was tested on the inner surface of the 5.5-inch casing after subsidization and pressure bearing test. After soaking in water for 24 hours, the pressure bearing was 35 MPa without leakage. At the same time, due to the low expansion ratio of the expanded rubber, the high content of rubber components in the expanded rubber, the performance of the expanded rubber is stable, and the tensile strength ...
Embodiment 3
[0055] The difference between this embodiment and embodiment 1 is:
[0056] According to the above situation, the tapers of the upper taper sleeve 5 and the lower taper sleeve 6 are designed to be 7°, the number of metal expansion rings 1-2 is 8, the width of metal expansion rings 1-2 is 4 mm, and the metal expansion ring 1 -2 has a thickness of 6mm, the expansion rubber ring 1-1 has a width of 5mm, and the expansion rubber ring 1-1 has a thickness of 5mm;
[0057] The multi-ring skeleton coated expansion rubber anchoring structure obtained by using the above parameters was tested on the inner surface of the 5.5-inch casing after subsidization and pressure bearing test. After soaking in water for 24 hours, the pressure bearing was 35 MPa without leakage. Compared with other expansion rubbers with an expansion rate of more than 800%, this structure can meet the sealing pressure requirements under the condition of a small expansion rate, and the tensile strength of the rubber te...
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Abstract
Description
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Application Information
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