Deployment of Swelling Elastomer Packers in Shell E&amp;P

Kleverlaan, Martijn; H., van Roger; Jones, Ian

doi:10.2523/92346-ms

Cited by 17 publications

(13 citation statements)

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“…Super absorbent polymers (SAP), organic/inorganic salts, and/or any saline materials are a vital ingredient to boost the absorption of water into the rubber matrix to cause swelling. As an example, sodium polyacrylate is a polyelectrolyte SAP (widely used in disposable diapers) and swells due to osmotic pressure effects [16]. The anionic charge on the pendant groups of the polymer chain needs to be balanced by cationic counter ions (Na+).…”

Section: Mechanism Of Swellingmentioning

confidence: 99%

Swelling Behavior of Elastomers under Water, Oil, and Acid

Qamar¹,

Akhtar²,

Pervez³

2021

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

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It is very important to determine the behavior of elastomer materials under realistic well conditions in order to select appropriate swelling elastomers for a particular set of field conditions, for successful modeling and simulation of various downhole processes, and for design improvement of swell packers and other sealing applications. In collaboration with national and regional petroleum development and rubber engineering companies, a series of experimental studies were therefore conducted at Sultan Qaboos University for characterization of swelling related material behavior of different elastomers. Results from some of these investigations (studies A, B, and C) are reported and discussed in this chapter.

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Section: Mechanism Of Swellingmentioning

confidence: 99%

Swelling Behavior of Elastomers under Water, Oil, and Acid

Qamar¹,

Akhtar²,

Pervez³

2021

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

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“…In Malaysia South Furious field, deployment of swelling elastomers resulted in reduction of water cut, production starting the very next day, even before complete swelling of the elastomer. 10 Enhanced oil recovery (EOR) techniques can be used for higher recovery from dwindling old reservoirs or difficult new ones. The required isolation of oil/gas and water can be successfully achieved through a combination of swelling elastomers and primary cementing.…”

Section: Zonal Isolationmentioning

confidence: 99%

Some downhole applications of swelling elastomers in oil and gas wells

Akhtara

Qamarb

Pervezb

2018

IPCSE

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Advanced polymers that exhibit volume increase when immersed in water or oil are known as swelling elastomers. They have been successfully used in recent years in downhole sealing applications in oil and gas drilling. Various case studies of use of swell packers can be found in published literature. However, these reports are usually targeted at only a couple of associated applications. To give a more holistic approach, the current paper describes many major applications of swelling elastomers in the petroleum industry. When undesirable zones are separated from production zones, it is called zonal isolation. Safeguarding production lines from water incursion is known as water shutoff. Techniques used to protect the wellbore from invasion of sand come under the umbrella of sand control. One of these is the use of sand screens, providing protection against plugging and wear of well equipment. Well completion is the series of tasks required to make the well productionready, the most important one being cementing. Well stimulation consists of enlargement of existing passages or formation of new ones for improved production. Swellable elastomers have been successfully employed in all of these applications, paving the way for improved or enhanced oil recovery in a relatively low-cost manner for long-term and effective solutions. These, and other applications, are discussed in the paper. This brief overview can be beneficial for petroleum students, field practitioners, researchers, and application designers.

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“…Its expanding mechanism is that the internal molecular structures of rubber expand [2] under thermal dynamic effect which allows liquid hydrocarbon to flow into the structures. It is capable of continuous swelling and can isolate irregular wellbore [3].…”

Section: Introductionmentioning

confidence: 99%

Study on Rubber Seal Design of a Swellpacker in Oil Well Cementing

Ma¹,

Jia²,

Bu³

et al. 2014

OALib

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A swellpacker has the advantages of high isolation reliability and good gas migration resistance in open holes. This paper analyzed the contact pressure and stress distribution of the downhole swellpacker, and optimized rubber structure for various formations. 1) The research shows that thermal expansion can better explain the expanding process of the rubber after adsorption of oil.2) The maximum contact pressure occurs in the middle of rubber, and the sealing effect of the packer increases exponentially with the length and thickness of rubber. 3) The shear stress model established for various formations indicates that the shear stress increases linearly with the contact pressure. According to the formation nature in northeastern Sichuan of China, 4) the optimum swellpacker rubber should be 18 mm in thickness, and 1.173 m in length for sandstone formation, 1.402 m for shale formation and 1.415 m for mudstone formation. 5) Stress verification reveals that the rubber does not fail and can work safely in downhole.

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Deployment of Swelling Elastomer Packers in Shell E&P

Cited by 17 publications

References 0 publications

Swelling Behavior of Elastomers under Water, Oil, and Acid

Swelling Behavior of Elastomers under Water, Oil, and Acid

Some downhole applications of swelling elastomers in oil and gas wells

Study on Rubber Seal Design of a Swellpacker in Oil Well Cementing

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