Application of Non-Metallic Composite Pipes in Oilfields in China

Qi, Dongtao; Li, Houbu; Cai, Xuehua; Ding, Nan; Zhang, Shuhui

doi:10.1061/9780784412619.032

Cited by 8 publications

(4 citation statements)

References 2 publications

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“… Acidic gases permeate through the liner wall and cause buckling collapse upon pressure fluctuation. 2012 Application of Non-metallic Composite Pipes in Oilfields in China [ 126 ] Joint Failure, Condensate The strength of polyester fiber reduced at higher temperatures around 65 °C as compared to aramid. SRTPs failed after one of the services due to temperature and external damage.…”

Section: Table A1mentioning

confidence: 99%

“… In case of low adhesion between protective and main pipe, the crack propagates through the interface and vice versa. 2013 Failure analysis of anticorrosion plastic alloy composite pipe used for oilfield gathering and transportation [ 126 ] Processing The higher resin content and a lower degree of cure decrease the T g, which affects the thermal stability and mechanical strength. 2013 Influence of specimen geometry on the slow crack growth testing of HDPE for pipe applications [ 130 ] Creep The SCG occurred at a low-stress level below the yield point.…”

Section: Table A1mentioning

confidence: 99%

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Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

2020

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Non-metallic pipe (NMP) materials are used as an internal lining and standalone pipes in the oil and gas industry, constituting an emerging corrosion strategy. The NMP materials are inherently susceptible to gradual damage due to creep, fatigue, permeation, processing defects, and installation blunder. In the presence of acid gases (CO2, H2S), and hydrocarbons under high pressure and temperature, the main damage is due to permeation. The monitoring of possible damage due to permeation is not well defined, which leads to uncertainty in asset integrity management. Assessment of permeation damage is currently performed through mechanical, thermal, chemical, and structural properties, employing Tensile Test, Differential Scanning Calorimetry (DSC), Fourier-transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM)/Transmission Electron Microscopy (TEM), to evaluate the change in tensile strength, elongation, weight loss or gain, crystallinity, chemical properties, and molecular structure. Coupons are commonly used to analyze the degradation of polymers. They are point sensors and did not give real-time information. Polymers are dielectric materials, and this dielectric property can be studied using Impedance Analyzer and Dielectric Spectroscopy. This review presents a brief status report on the failure of polymer liners in pipelines due to the exposure of acid gases, hydrocarbons, and other contaminants. Permeation, liner failures, the importance of monitoring, and new exclusive (dielectric) property are briefly discussed. An inclusive perspective is provided, showing the challenges associated with the monitoring of the polymer liner material in the pipeline as it relates to the life-time prediction requirement.

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Section: Table A1mentioning

confidence: 99%

Section: Table A1mentioning

confidence: 99%

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

2020

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“…RTPs are mainly used for oil and gas gathering and transportation, high-pressure alcohol injection, oilfield water injection, and sewage treatment, etc. [9]. Since 2011, RTPs have been tested in gas transportation (mixed oil and gas transportation), downhole water injection, and other fields [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Limit Operating Specifications for Onshore Spoolable Reinforced Thermoplastic Pipes

Zhang

Huang

et al. 2021

Polymers

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Spoolable reinforced plastic line pipes (RTPs), exhibiting a series of advantages such as good flexibility, few joints, long single length, light weight, easy installation, etc., have been widely used in the onshore oil and gas industry such as oil and gas gathering and transportation, high pressure alcohol injection, water injection, sewage treatment, and other fields. However, due to the lack of clear standard specificationof the limit operating properties for RTPs, three typical failure modes, i.e., tensile, flexure, and torsion, frequently occur in terrain changes,construction operation, and subsequent application, which seriously affects the promotion and use of RTPs. In this paper, the stress distribution of a non-bonded polyester fiber reinforced high-density polyethylene (HDPE) pipe (DN 150, PN 2.5 MPa) was systematically studied by the finite element method (FEM),and then the limit operating values under the axial tensile, coiled bending, and torsion load were determined.The corresponding experiments were conducted to validate the reliability and accuracy of the FEM model. The FEM results showed that the critical strain for axial tensile was 3%, the minimum respooling bend radius was 1016.286 mm, and the limit torsion angle of this RTP was 58.77°, which are very close to the experimental results. These limit values will be useful to establish normative guidelines for field construction and failure prevention of onshore RTP.

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“…Non-metallic pipe systems, such as glass fibre reinforced thermosetting resin pipes (shortly GRPs), reinforced thermoplastic pipes and non-metallic material lined steel pipes have been widely used in the oil and gas industry due to their ‘inherent’ corrosion resistance, lower life-cycle costs, light weight, smooth surface, high abrasion resistance and short installation time. 1 GRPs, lined or unlined, are the most widely applied non-metallic pipes in China. They have been used extensively in the fields of water injection, polymer flooding and oil transmission, etc., where the environments contain lots of corrosive media such as CO 2 , H 2 S and Cl − .…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of E6-glass fibre in simulated oilfield environments

Zhang

et al. 2012

Journal of Reinforced Plastics and Composites

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In order to understand the corrosion behaviour of E6-glass fibres in oilfield environments, three different oilfield atmospheres were first given. Morphologies and chemical bonding status of the corroded fibres were investigated by scanning electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The results reveal that corrosion of E6-glass fibres in simulated oilfield acidic media can be primarily attributed to the ion exchange mechanism, which is not only controlled by acid concentration, but is also dominated by the formation of complex ions or insoluble salts. The depletion of cations on E6-glass fibre surface can disrupt the continuity of the glass network, thus disturbing the glass structure and therefore reducing the strength of fibres.

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Application of Non-Metallic Composite Pipes in Oilfields in China

Cited by 8 publications

References 2 publications

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

Simulation Analysis of Limit Operating Specifications for Onshore Spoolable Reinforced Thermoplastic Pipes

Corrosion resistance of E6-glass fibre in simulated oilfield environments

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