Continuous tube cable with steel wire for load bearing
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A coiled tubing and steel wire technology, which is applied in the manufacture of cables, insulated cables, and cables/conductors, etc., can solve problems such as limited life of load-bearing structures, insulation damage, leakage accidents, etc., to enhance load-bearing performance, reduce requirements, and improve bearing capacity Effect of mechanical load capacity
Active Publication Date: 2017-05-10
HEBEI HUATONG WIRES & CABLES GRP CO LTD +1
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the outer steel wire of the load-bearing cable used in petroleum engineering is easy to break after being heated or bent many times, and the life of the load-bearing structure is limited; There is a large shear force between them, which is prone to insulation damage, which leads to leakage accidents and technical problems with great safety hazards.
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Embodiment 1
[0022] The chemical composition of coiled tubing is: C: 0.1%, Cr: 1.1%, Ni: 0.72%, Mo: 0.32%, V: 0.11%, Nb: 0.05%, B: 0.034%, P: 0.015%, S: 0.008%, the rest is Fe and unavoidable impurities.
Embodiment 2
[0024] The chemical composition of coiled tubing is: C: 0.11%, Cr: 1.1%, Ni: 0.7%, Mo: 0.3%, V: 0.1%, Nb: 0.06%, B: 0.032%, P: 0.015%, S: 0.009%, the rest is Fe and unavoidable impurities.
Embodiment 3
[0026] The chemical composition of coiled tubing is: C: 0.12%, Cr: 1%, Ni: 0.71%, Mo: 0.3%, V: 0.12%, Nb: 0.05%, B: 0.035%, P: 0.016%, S: 0.01%, the rest is Fe and unavoidable impurities.
[0027] Preferably, the preparation process of the steel strip used for manufacturing coiled tubing is as follows: first, the above-mentioned components are smelted according to the corresponding mass percentage and cast into a slab; second, the slab is heated to 1236°C, and the holding time is 2.0 min / mm, depending on the thickness of the slab; third, the temperature control range of the finish rolling is 792°C, and the temperature is kept for 15 minutes; fourth, quenching is carried out after heating to 1024°C; fifth, high temperature tempering is carried out at 664°C Processing; Sixth, natural cooling in the air. The steel strip after the above heat treatment not only has excellent welding performance, but also has excellent ductility and plasticity, which can greatly improve the service...
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Abstract
The invention discloses a continuous tube cable with a steel wire for load bearing. The continuous tube cable comprises a center steel wire rope, wherein at least two layers of copper conductors are arranged around the center steel wire rope; the centers of the copper conductors overlap with the axis of the center steel wire rope; a first waterproof insulating layer coats each copper conductor; a second waterproof insulating layer coats the axial outer side surfaces of the outermost layer of copper conductor; and a continuous oil tube sleeves the outer side surface of the second waterproof insulating layer. The steel wire for load bearing is arranged at the internal center position of a multi-core cable, the multi-core copper conductors surround the periphery of the steel wire rope, the steel wire has the characteristic of high strength due to the weight of the load-bearing cable with the center steel wire, and the ability of the cable for bearing a mechanical load is improved, so that a longer tube cable can be produced, meanwhile, the condition that the tube cable is not damaged due to coiling in the using process is ensured, the application range of the tube cable is improved, and meanwhile, the requirements on the internal cable are reduced.
Description
technical field [0001] The invention relates to a load-bearing continuous umbilical cable with steel wires, which is suitable for the technical field of petroleum engineering. Background technique [0002] The carrying capacity of the cable itself is limited, and when the length is long, the cable is easily broken due to its own weight, which limits the production and application of long-length products. At present, the main method to prevent the cable from being broken is to select a load-bearing cable, and use steel wire to wrap the outer periphery of the cable to achieve a greater load capacity. The defect of this kind of load-bearing cable is that the outer steel wire is easy to break after being heated or bent many times, and the life of the load-bearing structure is limited; Shear force, prone to insulation damage, resulting in leakage accidents, with a greater safety hazard. Contents of the invention [0003] The purpose of the present invention is to solve the pr...
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Application Information
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