Modeling and Simulation of Annular Pressure Buildup APB Management Using Syntactic Foam in HP/HT Deepwater Wells

Liu, Zhengchun; Samuel, Robello; Gonzales, Adolfo; Kang, Yongfeng

doi:10.2118/180308-ms

Cited by 9 publications

(6 citation statements)

References 8 publications

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“…Therefore, it was calculated on ANSYS engineering data by relation to Young's modulus and bulk modulus to attain a comparable Poisson's ratio to the actual [18]. The compressive modulus or compressibility is the repricoal relation to the bulk modulus, it indicates that the materials with high compressibility conversely are going to have a low value of bulk modulus, these phenomena are expressed in equation 1 where the Cb represents compressibility while Kb shows bulk modulus [19]- [21]. Thus, the Poisson's ratio of WPB, WPS, WPAL and WPI are 0.443, 0.196, 0.444, and 0.461 respectively.…”

Section: Materials Engineering Datamentioning

confidence: 99%

Mechanical Properties of Recycling Mixed Waste Plastic Predicted on Pallet Application Using Finite Element Analysis

Taqwatomo,

Novriadi,

Marsaputra Panjaitan

et al. 2024

E3S Web Conf.

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The enormous use of plastic in any live sector will impact the waste plastic escalation. Unsorted and uncollected wasted plastic properly leads to the creation of mixed waste plastic in landfills. Therefore, mechanical recycling technology for processing mixed waste plastic into pasta phase has been developed. In this research, four sources of mixed waste plastic were implemented derived from household plastic bags (WPB), waste of plastic sack (WPS), waste of used carton beverage (WPAL) and waste plastic from drum pulper in pulp industry (WPI). Those materials were transformed into specimens through extrusion and compression molding, then tested for investigation the mechanical properties. A comparison of density, tensile strength, and compressive strength from each material was exposed comprehensively. Furthermore, finite element analysis (FEA) was employed to compute the reliability of recycle material properties in the pallet application under the racking condition test following ISO 8611 standard. Surprisingly, it was reported a potential performance with a maximum racking load until 700 kg for pallet product using all variants of mixed waste plastics. The maximum capacity was obtained based on consideration of the FEA result exhibited in tresca or maximum shear stress, total deformation, and factor of safety design.

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Section: Materials Engineering Datamentioning

confidence: 99%

Mechanical Properties of Recycling Mixed Waste Plastic Predicted on Pallet Application Using Finite Element Analysis

Taqwatomo,

Novriadi,

Marsaputra Panjaitan

et al. 2024

E3S Web Conf.

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“…Combined Equation 26 and Equation 27, the coupled multicasing strength allowable APB value for inward pressure relief is determined as Equation 28.…”

Section: Outward Mitigation Pressure Relief Threshold Determination Mmentioning

confidence: 99%

“…26,27 But the compressible foam is difficult to transfer to the drilling platform because the large volume is needed, and trip in the casing with compressible foam will face the problem of fraction drag increasing. The former two methods are most reliable mitigation technologies because the foam and nitrogen have much better compressibility.…”

Section: Comparison Of Pressure Relief Effect With Other Mitigationmentioning

confidence: 99%

“…The former two methods are most reliable mitigation technologies because the foam and nitrogen have much better compressibility. 26,27 But the compressible foam is difficult to transfer to the drilling platform because the large volume is needed, and trip in the casing with compressible foam will face the problem of fraction drag increasing. The deficiency of nitrogen shrinking spacer is complex technology and expensive devices.…”

Section: Comparison Of Pressure Relief Effect With Other Mitigationmentioning

confidence: 99%

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Mitigation of annular pressure buildup for deepwater wells using a recovery relief method

Tang

Chen

et al. 2019

Energy Science & Engineering

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Annular pressure buildup (APB) is induced by high‐temperature tubing fluid heating the trapped annular fluid, which leads to liquid thermal expansion at the production stage in deepwater wells. Casing would be burst or collapsed without APB mitigation. A novel recovery relief method was adopted to mitigate APB through the principle of differential pressure. To assess the application effect of the method, APB prediction model and pressure relief threshold determination method were proposed, where the transient heat transfer and volume and pressure coupling were involved. The laboratory test of the principle prototype was conducted so that the feasibility of the recovery relief method was validated. The numerical APB mitigation effect was simulated by the field example. The production simulation results indicated that the high‐temperature‐induced APB caused casing failure. The simulation of APB mitigation with both inward and outward directions demonstrated that the casings using outward mitigation method were safer with lower safe factor. Besides, comparing the mitigating effect to the rupture disk, the recovery relief method had more maximum allowable APB of annulus A. Additionally, compared to other 11 ordinary mitigation methods with the qualities of engineering reliability, technology feasibility, and economy, the recovery relief method had best mitigation performance. Therefore, the recovery relief method was recommended for APB mitigating practice.

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“…• String materials: casing covered with compressible material [26]; optimization of casing size and steel grade [27]; vacuum insulated tubing [23]; • Equipment: rupture disk [28]; unidirectional pressure control tool; • Technological measures: injecting N 2 or compressible liquid into annuli [29]; adopting foam spacer.…”

Section: Introductionmentioning

confidence: 99%

Study on Casing Safety Evaluation in High-Temperature Wells with Annular Pressure Buildup

et al. 2023

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In high-temperature wells, annular pressure buildup (APB) caused by temperature increase is a widespread phenomenon in production, especially in offshore thermal recovery wells. It increases the load on the tubing and casing and consequently threatens the wellbore integrity. Hence, research on casing safety evaluation and APB management has great significance for field production. In this paper, the tubing and casing safety evaluation and APB limit determination methods are presented considering the effect of thermal stress and APB. Based on the case study of an offshore thermal recovery well, an APB-management chart and the recommended optimal range of APB are provided. Finally, an analysis of three commonly used mitigation methods is presented. The effect and the recommended parameters of these mitigation methods are further discussed. The research results show that the thermal stress and APB phenomena affect the stress distribution of the casing and may bring great danger to the wellbore integrity. Maintaining the APB in the safety range is necessary for field production. It is recommended that the annular pressure be kept below the critical value given in this paper. Injecting nitrogen in annulus A and installing rupture disks are both effective methods to improve casing safety. In the case study, the APB decrease percentage is more than 75% when nitrogen is injected in annulus A. However, the nitrogen pressure, the rupture pressure and the installation depth of the rupture disk need to be determined via casing safety evaluation. The effect of optimizing the steel grade and thickness of the tubing and casing is not significant. They can be used as assistance methods when other mitigation methods are adopted.

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Modeling and Simulation of Annular Pressure Buildup APB Management Using Syntactic Foam in HP/HT Deepwater Wells

Cited by 9 publications

References 8 publications

Mechanical Properties of Recycling Mixed Waste Plastic Predicted on Pallet Application Using Finite Element Analysis

Mechanical Properties of Recycling Mixed Waste Plastic Predicted on Pallet Application Using Finite Element Analysis

Mitigation of annular pressure buildup for deepwater wells using a recovery relief method

Study on Casing Safety Evaluation in High-Temperature Wells with Annular Pressure Buildup

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