Electric-submersible-pump composite duct cable and manufacturing method thereof
AssigneeShinda (Tangshan) Creative Oil & Gas Equipment Co., Ltd.
InventorsJian Dong, Jianliang Duan
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Abstract
An electric-submersible-pump composite duct cable is provided and includes a steel tube shell and an isolation layer. The isolation layer covers the outer circumferential surface of an ethylene-propylene jacket. The steel tube shell covers the outer circumferential surface of the isolation layer. Multiple signal cable assemblies and multiple injection agent tubes are arranged inside the isolation layer. Each signal cable assembly and each injection agent tube are in staggered arrangement at the internal center of the ethylene-propylene jacket. A manufacturing method of the electric-submersible-pump composite duct cable mainly includes two steps of manufacturing the isolation layer and machining the steel tube shell.
Claims5
An electric-submersible-pump composite duct cable, comprising a steel tube shell and an isolation layer, wherein the isolation layer covers an outer circumferential surface of an ethylene-propylene jacket;
- the steel tube shell covers an outer circumferential surface of the isolation layer;
- multiple signal cable assemblies and multiple injection agent tubes are arranged inside the isolation layer;
- each signal cable assembly and each injection agent tube are in staggered arrangement at an internal center of the ethylene-propylene jacket;
- and
- the isolation layer is formed from a steel plate, and during a manufacture of the electric-submersible-pump composite duct cable, the isolation layer is provided with a slot which is formed below a laser welding portion of the steel tube shell through pressing the isolation layer on the ethylene-propylene jacket, and is configured for receiving an excess weld metal.
A manufacturing method of an electric-submersible-pump composite duct cable, wherein the electric-submersible-pump composite duct cable comprises a steel tube shell and an isolation layer, wherein the isolation layer covers an outer circumferential surface of an ethylene-propylene jacket;
- the steel tube shell covers an outer circumferential surface of the isolation layer;
- multiple signal cable assemblies and multiple injection agent tubes are arranged inside the isolation layer;
- each signal cable assembly and each injection agent tube are in staggered arrangement at an internal center of the ethylene-propylene jacket, comprising the following steps:
- step 1, manufacturing the isolation layer:
- an outermost layer of an electric-submersible-pump cable in initial state is the ethylene-propylene jacket, and the multiple signal cable assemblies and the multiple injection agent tubes are arranged inside the isolation layer, arranging the isolation layer on the outer circumferential surface of the ethylene-propylene jacket via a relative machining device;
- and
- step 2, machining the steel tube shell:
- placing a steel coil raw material for producing the steel tube shell on a first steel strip placement stand;
- placing a spare cable coated with the isolation layer in step 1 on a payoff stand;
- guiding a start end of the steel coil raw material for producing the steel tube shell to sequentially pass through a steel tube initial forming device, the payoff stand, a laser welding device, a nondestructive testing device, a drawing device and a tractor to produce a steel tube shell covering the spare cable;
- finally, winding a finished-product electric-submersible-pump composite duct cable composited with the steel tube shell by a second take-off stand for later use,
- wherein the isolation layer is formed from a steel plate, and during the manufacturing method, the isolation layer is provided with a slot which is formed below a laser welding portion of the steel tube shell through pressing the isolation layer on the ethylene-propylene jacket, and is configured for receiving an excess weld metal.
Dependencies are inferred from the claim text.