Fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof

• US 10,808,463 B2
• Filed: 06/11/2018
• Issued: 10/20/2020
• Est. Priority Date: 10/18/2013
• Status: Active Grant

• Current Assignee: 5Elem Hi-Tech Corporation
• Original Assignee: 5Elem Hi-Tech Corporation
• Inventors: Sha, Yuehua, Wang, Jinma, Wang, Donghui, Zhou, Shanhong
• Primary Examiner(s): Schneider, Craig M
• Assistant Examiner(s): Deal, David R
• Application Number:
  US16/005,658
• Publication Number:
  US 20180298701A1
• Time in Patent Office: 862 Days
• Field of Search: 138125
• CPC Class Codes: B29C 33/20 Opening, closing or clamping
• CPC Class Codes: B29C 48/001 Combinations of extrusion moulding with other shaping operations
• CPC Class Codes: B29C 48/0012 combined with shaping by internal pressure generated in the material, e.g. foaming
• CPC Class Codes: B29C 48/09 Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• CPC Class Codes: B29C 48/18 the components being layers
• CPC Class Codes: B29C 48/21 the layers being joined at their surfaces
• CPC Class Codes: B29C 48/285 Feeding the extrusion material to the extruder
• CPC Class Codes: B29C 48/30 Extrusion nozzles or dies extrusion characterised by the shape or cross-section of the extruded article B29C48/03
• CPC Class Codes: B29C 48/338 using a die with concentric parts, e.g. rings, cylinders
• CPC Class Codes: B29C 48/34 Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
• CPC Class Codes: B29C 65/48 using adhesives , i.e. using supplementary joining material; solvent bonding
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2075/00 Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2023/005 Hoses, i.e. flexible
• CPC Class Codes: E21B 17/20 Flexible or articulated drilling pipes , e.g. flexible or articulated rods, pipes or cables
• CPC Class Codes: E21B 43/26 by forming crevices or fractures
• CPC Class Codes: F16L 11/04 made of rubber or flexible plastics

Abstract

A fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof are provided. The method includes extrusion of a cover layer with a first adhesive layer and an inner lining layer with a second adhesive layer, formation of an enhancement layer, heating and pressurizing for bonding between the cover layer and the enhancement layer and between the inner lining layer and the enhancement layer, so that the formed fracturing liquid delivery hose has resistance at least to high pressure and chemical corrosion. The cover layer and the inner lining layer can use different types of materials.

Claims

1. A liquid delivery hose, comprising:

a first tube including a cover layer and a first adhesive layer, the first adhesive layer being attached inside the cover layer;

a second tube including a lining layer and a second adhesive layer, the second adhesive layer being attached outside the lining layer, wherein the lining layer of the second tube includes Thermoplastic Polyurethane (TPU), a mixture of TPU and Polyvinyl Chloride (PVC), or a mixture of PVC and butyronitrile; and

a third tube having an inner surface and an outer surface, wherein the third tube includes woven filaments,

wherein the first adhesive layer of the first tube is bonded with the outer surface of the third tube, and the second adhesive layer of the second tube is bonded with the inner surface of the third tube.

2. The liquid delivery hose of claim 1, wherein the first adhesive layer is bonded with the cover layer, and wherein:

the cover layer is formed by a plurality of first particles, the plurality of first particles being extruded by a first part of a co-extrusion mold; and

the first adhesive layer is formed by a plurality of second particles, the plurality of second particles being extruded by a second part of the co-extrusion mold.

3. The liquid delivery hose of claim 2, wherein the plurality of first particles include a color concentrate.

4. The liquid delivery hose of claim 1, wherein the cover layer of the first tube and the lining layer of the second tube are made of different materials.

5. The liquid delivery hose of claim 1, wherein:

the cover layer of the first tube includes Thermoplastic Polyurethane (TPU) or a mixture of TPU and Polyvinyl Chloride (PVC).

6. The liquid delivery hose of claim 1, wherein the third tube is manufactured by weaving a tubular enhancement layer using filaments or fibers including at least one of TERYLENE®

brand polyethylene terephthalate filaments, nylon filaments, and aramid fibers.

7. The liquid delivery hose of claim 6, wherein the third tube includes a copper wire woven along an axial direction of the tubular enhancement layer.