Novel Application of Elemental Aluminum and Zinc to Generate aSelf-Compressing Silicate System for Use in Lost Circulation and Conformance

Soucy, Kelly; Cramer, Brett; McDonald, Michael; Li, Xianglian

doi:10.2118/187424-ms

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…The chemistry of this product is unique and has been detailed by Millar et al, where it was investigated as a lost circulation material in drilling muds. Aqueous alkali alumino silicate provides the same benefits as sodium silicate along with some additional benefits. − In the application of AAAS in the freshwater zone, a freshwater zone is not needed to be treated with a dissolved metal multivalent cation to initiate a precipitation reaction. The AAAS crystallization reaction is not affected by the presence of NaCl due to its tolerance toward salts.…”

Section: Introductionmentioning

confidence: 99%

Application of a Novel and Sustainable Silicate Solution as an Alternative to Sodium Silicate for Clay Swelling Inhibition

Murtaza

Kamal

2020

ACS Omega

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Shale swelling during drilling operations causes many problems mainly related to wellbore instability. The oil-based muds (OBMs) are very effective in controlling the swelling potential of clay-rich shale formation, but their environmental concerns and the economic aspects curtail their usage. In the application of water-based mud (WBM), it is mixed with various swelling inhibitors such as inorganic salts (KCl and NaCl), sodium silicate, polymers, and amines of various types. The above-mentioned materials are however afflicted by some limitations in terms of their toxicity, their effect on drilling mud rheology, and their limited tolerance toward temperature and oil contamination. In this study, we investigated a novel hybrid aqueous alkali alumino silicate (AAAS) as a shale swelling inhibitor in WBM. The AAAS is a mixture of sodium, aluminum, and silicon oxides. Experimental investigations were carried out using a linear swell meter, hot rolling and capillary suction timer, ζ-potential test, filtration test, and rheology test. The application of hybrid silicate as a swelling inhibitor was studied in two phases. In the first phase, only silicate solutions were prepared in deionized water at various ratios (1, 2, and 5%) and tested on sodium bentonite and shale samples containing high contents of kaolinite clay. Further testing on commonly used inhibitors such as KCl and sodium silicate solutions was conducted for comparative purposes. In the second phase, different drilling mud formulations consisting of various percentages of AAAS were mixed and tested on original shale samples. It was observed that the novel silicate-based mix proved to be a strong shale swelling inhibitor. Its inhibition performance was better as compared to the sodium silicate solution and KCl solution. It not only inhibits shale swelling but also acts as a shale stabilizer due to its high adsorption on the shale surface, which prevents the shale/water reactivity, makes the shale formation stronger, and prevents caving.

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Section: Introductionmentioning

confidence: 99%

Application of a Novel and Sustainable Silicate Solution as an Alternative to Sodium Silicate for Clay Swelling Inhibition

Murtaza

Kamal

2020

ACS Omega

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“…In 2013, Miller et al applied an AAAS-based system as a lost circulation material in drilling fluids and concluded that the AAAS-based system had strong sealant characteristics. Further, it was reported in the literature that AAAS had a high tolerance toward contamination from oil, oil-based mud, and high salinity. , In addition, the alumina content in AAAS could be useful in preventing the shrinkage, as alumina content is useful as an expansion material in cement slurry and enhances the compressive strength …”

Section: Introductionmentioning

confidence: 99%

“…Further, it was reported in the literature that AAAS had a high tolerance toward contamination from oil, oil-based mud, and high salinity. 27,29 In addition, the alumina content in AAAS could be useful in preventing the shrinkage, as alumina content is useful as an expansion material in cement slurry and enhances the compressive strength. 30 In this study, a novel silicate system, AAAS, was introduced and tested on oil well cement slurry.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of a Novel, Efficient, and Sustainable Hybrid Silicate System in Oil and Gas Well Cementing

2020

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The cement sheath between casing and formation is required to have long-term sustainability for the longer life of the well. Different formulations based on different additives are prepared and pumped down into the annulus between casing and formation. In the past, sodium silicate and some other silicates had a wide range of applications in conformance control and water shutoff. Mostly silicate-based systems were used as extenders and accelerators in oil well cementing. In this study, a novel silicate system, aqueous alkali alumino silicate (AAAS) was tested in oil well cementing. There have been limited applications of an AAAS-based cement system reported in the literature. Nondestructive compressive strength and rheological properties such as plastic viscosity, yield point, and gel strengths of silicate-based cement slurries were measured. The AAAS was added in (3, 5, and 8) wt % (% by weight of water) into the cement slurry and cured at 50 °C and 2000 psi for 24 h in an ultrasonic cement analyzer. The evolution of compressive strength was measured with time. The rheological properties were measured at 50 °C and atmospheric pressure using an atmospheric viscometer. The performance of AAAS was compared with 5 wt % sodium silicate and simple Class G cement. The scratch strength of 5 wt % AAAS and sodium-silicate-based cement slurries were tested and compared. It was observed that the addition of a novel silicate system increased the compressive strength. In addition to that, the novel silicate provided an accelerating effect in the development of compressive strength. The rheological properties increased with an increase in concentration. The yield point was mainly affected by the addition of AAAS. The application of a novel silicate could be a strong alternative for sodium silicate in area of oil well cementing because of its promising results of compressive strength and rheology. It has a high tolerance toward contamination as compared to sodium silicate reported in the literature. The nondestructive compressive was increased by 33% upon the ddition of 5 wt % AAAS. Furthermore, AAAS increased the yield point from 15.94 to 24.64 lbf/100 ft2 at 5 wt % concentration. The AAAS solution is preferable in shallow gas wells of depths less than 3000 feet and 60 °C temperature. In those wells, AAAS can be pumped along with cement slurry for its quick setting. The AAAS can also be applied as an extender during cementing of low breakdown pressure formation or depleted zones.

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Long-term Oil Well Zonal Isolation Control Using Geopolymers: An Analysis of Shrinkage Behavior

Olvera

Panchmatia

Juenger

et al. 2019

SPE/IADC International Drilling Conference and Exhibition

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Volume changes due to shrinkage are inherent to the hydration process of ordinary portland cement (OPC) and alkali-activated cementitious materials. Under elevated temperature and pressure conditions, as is the case in oil and gas wells, the internal stresses created by shrinkage can result in loss of zonal isolation and the need for expensive repairs. This paper compares the early age shrinkage behavior of Class H OPC, alkali-activated Class F fly ash (referred to as geopolymer in this study), and geopolymer-hybrid (geopolymers incorporating drilling mud) slurries with up to 20% (by volume) synthetic based mud (SBM) contamination cured at 23°C and 50°C. In addition, the use of zinc and aluminum-based expansive agents to mitigate shrinkage was explored. Results from various test methods characterizing shrinkage behavior show that (a) shrinkage increases with temperature for all cases, (b) geopolymers shrink less than OPC slurries at low temperature, (c) geopolymer shrinkage exceeds that of OPC slurries at higher temperatures, (d) the addition of SBM increases the shrinkage of both OPC and geopolymer slurries, and (e) the use of suitable expansive agents has the potential to neutralize shrinkage of both OPC and geopolymer slurries. The work also shows that the current set of ASTM and API shrinkage tests need to be augmented with a test that can be conducted at elevated temperature and pressure, particularly when testing expansive agents that generate gases. A proposal for a more relevant test is included.

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Novel Application of Elemental Aluminum and Zinc to Generate aSelf-Compressing Silicate System for Use in Lost Circulation and Conformance

Cited by 3 publications

References 12 publications

Application of a Novel and Sustainable Silicate Solution as an Alternative to Sodium Silicate for Clay Swelling Inhibition

Application of a Novel and Sustainable Silicate Solution as an Alternative to Sodium Silicate for Clay Swelling Inhibition

Experimental Investigation of a Novel, Efficient, and Sustainable Hybrid Silicate System in Oil and Gas Well Cementing

Long-term Oil Well Zonal Isolation Control Using Geopolymers: An Analysis of Shrinkage Behavior

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