Practical Uses of Swellable Packer Technology To Reduce Water Cut: Case Studies From the Middle East and Other Areas

Keshka, Ashraf Al-Saiid; Elbarbay, Abdalla; Menasria, Cherif; Smith, Peter E.

doi:10.3997/2214-4609-pdb.147.spe108613

Cited by 19 publications

(3 citation statements)

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“…Generally, it is necessary to use killing fluid or blow out pressure to ensure the safety of downhole operation before drilling and completion. − However, it is inevitable to invade reservoirs in killing operation, resulting in a sharp decline in permeability and oil and gas production due to the change of physical and chemical properties of oil and gas reservoirs and plugging of pores by solid particles. , According to the data statistics, each well killing operation can reduce production by 20%. , Meanwhile, the pressure blow-out will lead to the pressure drop of local formation, damaging the formation structure and well pattern pressure distribution , and reduce the formation productivity. Therefore, killing and blowout operations are not conducive to the sustainable development of oil and gas resources but also not beneficial for the development of low permeability and low production of sensitive reservoirs.…”

Section: Introductionmentioning

confidence: 99%

“… 18 − 20 However, it is inevitable to invade reservoirs in killing operation, resulting in a sharp decline in permeability and oil and gas production due to the change of physical and chemical properties of oil and gas reservoirs and plugging of pores by solid particles. 21 , 22 According to the data statistics, each well killing operation can reduce production by 20%. 23 , 24 Meanwhile, the pressure blow-out will lead to the pressure drop of local formation, damaging the formation structure and well pattern pressure distribution , and reduce the formation productivity.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation on the Penetrability Mechanism of Gel Slug During Well Completion Processes

Dou

Zhang

et al. 2023

ACS Omega

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Reservoir formation damage is an essential problem which troubled oil and gas well production, a smart packer is a promising technology to maintain sustainable development for the oil and gas fields. Currently, the "gel valve" technology has been proved to be feasible with gel slug to seal casing and descend the completion pipe string, while the systemic performance of ideal gel is still not clear. In the underbalanced completion stage with the gel valve, the downward completion string needs to penetrate the gel slug to form an oil and gas passage in the wellbore. The penetration of rod string to gel is a dynamic process. The gel-casing structure often shows a time-dependent mechanical response, which is different from the static response. In the process of penetration, the interaction force between the rod and gel is not only related to the properties of the interface between gel and string but also affected by the moving speed, rod diameter, and thickness of the gel. The dynamic penetration experiment was carried out to determine the penetrating force varied with depth. The research showed that the force curve was mainly composed of three parts, the rising curve of elastic deformation, decline curve for the surface worn out, and another curve of the rod wear into. By changing the rod diameter, gel thickness, and penetration speed, the change rules of forces in each stage were further analyzed, which would provide a scientific basis for a well completion design with a gel valve.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Penetrability Mechanism of Gel Slug During Well Completion Processes

Dou

Zhang

et al. 2023

ACS Omega

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“…As discussed earlier, swelling elastomers are a new breed of advanced polymers [1]. Over the last two decades, they have found increasing use in drilling of difficult oil and gas wells, remediation of damaged wells, and renewal of production from abandoned wells [2][3][4][5][6][7][8]. It is important to know whether an elastomer type or a certain seal design will function properly and reliably under a given set of well conditions [9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Structural Behavior of Swelling Elastomers under Compressive Loading

Qamar¹,

Akhtar²,

Pervez³

2021

Swelling Elastomers in Petroleum Drilling and Development - Applications, Performance Analysis, and Material Modeling

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Swelling elastomers are a new breed of advanced polymers, and found increasing use in drilling of difficult oil and gas wells. It is important to know how an elastomer will behave under a given set of well conditions, especially after the initial quick-swell period. Good design depends on appropriate material selection. Results are presented in this chapter from experimental and numerical studies conducted to analyze how compressive and bulk behavior of actual oilfield elastomers changes due to swelling. Six key attributes of swelling elastomers needed for design improvement and performance analysis of elastomer seals are discussed: four mechanical properties (elastic modulus E, bulk modulus K, shear modulus G, and Poisson’s ratio ν), and two polymer structure characteristics (cross-link chain density NC, and average molecular weight MC). These parameters were experimentally determined before and after various stages of swelling for two different swelling elastomers being currently used by the regional petroleum industry, in low and high salinity brines. To strengthen the experimental results, and to be able to forecast for other elastomer materials and well conditions, tests were also simulated using the commercial FEM package ABAQUS, using the best available hyperelastic material models.

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Using new chemical methods to control water production in oil reservoirs: comparison of mechanical and chemical methods

Seifi,

Haghighat,

Nikravesh

et al. 2024

J Petrol Explor Prod Technol

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Effective water management in oil reservoirs is crucial for maximizing hydrocarbon recovery while minimizing environmental degradation. This paper investigates the potential of innovative chemical techniques to control water production in oil reservoirs and compares these methods with traditional mechanical strategies. By reviewing over 70 case studies extensively, this research provides a detailed evaluation of different approaches to managing water cut. The study reveals that chemical methods, particularly those utilizing advanced polymer-based gels, are generally more effective than mechanical techniques. These methods are especially advantageous in settings with high water cuts and geologically complex reservoirs. Chemical treatments provide greater adaptability and cost-efficiency, significantly reducing the environmental impact compared to mechanical approaches. The primary aim of this research is to analyze the sources of water cut and evaluate common water shutoff operations to enhance reservoir management based on specific challenges, reservoir characteristics, and economic considerations. Our findings suggest using a two-step strategy: starting with mechanical control methods and then applying chemical treatments specifically designed for the reservoir’s unique physical properties. This not only improves oil recovery rates but also enhances economic efficiency by extending the reservoirs’ lifespan. Future research should focus on developing cost-effective, environmentally friendly chemical solutions suitable for various geological settings. Such advancements could significantly refine water management practices in oil fields, leading to better economic and environmental outcomes.

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Practical Uses of Swellable Packer Technology To Reduce Water Cut: Case Studies From the Middle East and Other Areas

Cited by 19 publications

References 0 publications

Experimental Investigation on the Penetrability Mechanism of Gel Slug During Well Completion Processes

Experimental Investigation on the Penetrability Mechanism of Gel Slug During Well Completion Processes

Mechanical and Structural Behavior of Swelling Elastomers under Compressive Loading

Using new chemical methods to control water production in oil reservoirs: comparison of mechanical and chemical methods

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