Aluminum Alloys for Casing and Tubing

Basovich, Vladimir; Gelfgat, Mikhail; Basovich, Dmitry; Buyanovskiy, Ilya N.; Vakhrushev, Alexey Vladimirovich; Alikin, Rudolf; Sledkov, Vladimir; Loparev, D.S.; Sapunzhi, Vitaly V.

doi:10.2523/14888-ms

Cited by 3 publications

(1 citation statement)

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“…Considering rated strength, corrosion resistance and based on results of stress-strain state analysis of casing string, a highstrength aluminum alloy 1953Т1 was chosen as a material for aluminium alloy casing. This material underwent complex testing in corrosion aggressive environment similar to well conditions [6].…”

Section: Selection Of Aluminum Alloy and Corrosion Testingmentioning

confidence: 99%

Experience in the Development and Use of Aluminum Alloy Casing for Conditions of High Content of Acid Gases in Formation Fluids

Sledkov

Gelfgat

Basovich³

2019

E3S Web Conf.

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When selecting a casing material for fields with a high content of H2S and CO2, it is recommended to use specialized corrosion-resistant tubulars with high content of chrome of the Sanicro 29 type. The high cost of the material can be critical for the project economy. A promising approach for these problems elimination could be the application of aluminium alloy casing pipes. They are remain inert to corrosion even if the formation environment is fully saturated with H2S and/or CO2. They are also lightweight, have high strength-to-weight ratio, and thus decrease the existing tensions in the string and reduce well construction costs.

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Section: Selection Of Aluminum Alloy and Corrosion Testingmentioning

confidence: 99%

Experience in the Development and Use of Aluminum Alloy Casing for Conditions of High Content of Acid Gases in Formation Fluids

Sledkov

Gelfgat

Basovich³

2019

E3S Web Conf.

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The Application of Aluminum Toe Casing for Landing Production Strings in Extended Lateral Wells

Brown¹,

Dziekonski²

2017

SPE Eastern Regional Meeting

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With the increase in average lateral length for horizontal wells comes increased challenges for reaching total depth (TD) with the production casing. Any production interval left un-cased will not contribute to initial or ultimate production or be booked as reserves, which can have a major detrimental impact on the financials of these wells. ALTISS Technologies has designed a patent pending aluminum casing concept to facilitate the installation of long cased laterals, and assist with landing casing at the total depth. Due to its low density and low modulus of elasticity, the aluminum casing is about half the buoyed weight and twice as flexible as comparable steel casing. These physical properties help the aluminum casing lighten the toe of the casing string and navigate through micro doglegs and tortuous wellbores. The aluminum casing was designed with a focus on torque and drag reduction, to be used in limited quantities to maximize the benefits and ensure that casing reaches total depth. Analysis showed that 4,000 pounds of hook load could be added, without casing rotation, with as little as 160 feet of aluminum casing installed, in some cases. To ensure proper threaded connections with the low modulus aluminum, ALTISS designed its own 5 ½" premium threaded connection, which exceeded 56,000 ft.-lbs. yield torque in testing. Multiple aluminum tubular specimens were collapsed in a laboratory setting to validate equations which are not covered by API calculations, nor conventional closed form solutions (e.g. Timoshenko, Tamano). An experimental nano-coating is currently being evaluated that will protect the aluminum from potential forms of corrosion, including galvanic reactions and acid programs. The advantages of installing aluminum casing may allow for eliminating expensive premium threaded connections needed for rotating casing, or alternatives such as floating casing. Ensuring the lateral is 100% cased improves initial production, allowable booked reserves, and ultimate hydrocarbon recovery of the well.

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Manuscript Title: Characterization of Microannuli at the Cement-Casing Interface: Development of Methodology

Ogienagbon

Khalifeh

Yang

et al. 2021

Day 3 Wed, November 17, 2021

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Formation of microannuli at the interface of cement-casing can create well integrity issues. X-ray CT and Optical microscopy are technological trends that may have potential for direct visualization of microannuli. CT has an advantage of providing non-destructive visualization of microannuli, but its resolution suffers with increase in casing thickness. Conversely, Optical microscopy has the potential of providing higher resolution needed to detect smaller sized microannuli; however, information about microannuli is limited to only a few sections where samples have been sliced. The objective of the current article is to describe a methodology to examine the interface of cement-casing. Experimental work was combined with literature review. This includes both direct visualization methods, evaluation of current trends to better understand the characteristics and geometric variation of relevant leakage paths. We generate test specimens consisting of cement plugs, various steel casing thickness and nano-coated aluminium casings. Hydraulic sealability tests were conducted by injecting water at the cement-casing interface. Flow rates are then interpreted in terms of microannuli aperture and direct visualization of the cement plug-casing interface by CT and Optical microscopy was implemented. The experimental findings of this article will form a basis for studying geometry and size of microannuli as well as modelling of fluid migration.

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Aluminum Alloys for Casing and Tubing

Cited by 3 publications

References 0 publications

Experience in the Development and Use of Aluminum Alloy Casing for Conditions of High Content of Acid Gases in Formation Fluids

Experience in the Development and Use of Aluminum Alloy Casing for Conditions of High Content of Acid Gases in Formation Fluids

The Application of Aluminum Toe Casing for Landing Production Strings in Extended Lateral Wells

Manuscript Title: Characterization of Microannuli at the Cement-Casing Interface: Development of Methodology

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