Low-Density Acid-Removable Cement as a Solution for Lost Circulation Across Producing Formations

Bour, Daniel; Vinson, E.F.; Totten, P.L.; Waheed, Abdul

doi:10.2118/25543-ms

Cited by 9 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bour et al [15] stated that acid soluble cement (ASC) (foamed or neat) provides an effective solution to the loss of return through producing a formation. Seymour and Santra [16] evaluated the use of acid-soluble cement (ASC) as a solution for loss of returns in drilling the reservoir section.…”

Section: Lost Circulation Materialsmentioning

confidence: 99%

A Novel Solution for Severe Loss Prevention While Drilling Deep Wells

et al. 2020

View full text Add to dashboard Cite

The loss of circulation is a big problem in drilling operations. This problem is costly, time-consuming and may lead to a well control situation. Much research has investigated the effectiveness of using different chemicals as lost circulation material (LCM) to stop mud and cement slurry losses. However, there remain many limitations for using such LCM types, especially when it comes to field applications. This paper presents a new high strength lost circulation material (HSLCM) that could effectively be used for managing severe lost circulation cases. The HSLCM could easily be pumped into the thief zone where it forms a gel that solidifies after a setting time to provide sealing between the wellbore and the thief zone. With this technique, the material stops the circulation losses, and hence enhances the well bore stability by reducing the well bore stresses. The HSLCM has a high compressive strength and it has a high acid solubility of around 96%. Because the HSLCM has high tolerance towards contamination, it can be utilized with water-based mud or invert emulsion-drilling fluids, hence providing a wide window of applications with the drilling fluids. In this study, laboratory experiments were conducted to evaluate the rheology, thickening time, compressive strength, and acid solubility of the HSLCM. The results showed good performance for the HSLCM as LCM. In addition, a case field study is presented which shows a successful field treatment for severe losses.

show abstract

Section: Lost Circulation Materialsmentioning

confidence: 99%

A Novel Solution for Severe Loss Prevention While Drilling Deep Wells

et al. 2020

View full text Add to dashboard Cite

show abstract

“…7 Typical materials used for this purpose include polymers, gels, viscosifiers, foams, 8-10 polyurethanes, 11 calcium carbonates [12][13][14][15][16] and cement. [17][18][19][20][21][22][23][24][25][26][27] These materials, which come in various forms and have different chemical compositions, should provide the proper seal to problematic thief zones. The materials ought to block openings within the matrix itself and provide bridging capability between the different fluid flow channels that could exist outside the matrix in open cracks and caverns.…”

Section: Lost-circulation Materials (Lcm)mentioning

confidence: 99%

Use of Cement as Lost-Circulation Material: Best Practices

Fidan¹,

Babadagli²,

Kuru³

2004

Canadian International Petroleum Conference

View full text Add to dashboard Cite

Fluid loss is encountered in almost all drilling operations.Depending on the severity of lost circulation and the size and type of the thief zone, different lost-circulation materials (LCMs) are used for curing. Cement is one of the most common LCMs. Various types of cement have been used as LCMs in the past.Recent developments in cement technology and the understanding of lost circulation have produced customdesigned applications utilizing effective cement types and compositions. Applications also vary depending on the drilling fluid type and its properties. Custom-designed applications include thixotropic and ultrathixotropic cement slurries; slurries containing cello flakes, mica, and CaCO 3 for mechanical bridging; unique spacers and surfactant packages; and foamed cement for controlling loss.Selection of proper cement type and injection procedure calls for specific information such as formation properties, wellbore conditions, and thief zone characteristics. Laboratory experiments are recommended in this process. Field observations are also critical in making the final decision for selecting the optimum treatment fluid train and application strategy.This paper discusses the application of various cement types (and process designs) as LCMs. Solutions to problematic field cases are provided. The criterion for selecting the best cement compositions is outlined. Optimal strategies are also presented.

show abstract

“…The use of a foamed acid-soluble cement system to mitigate loss circulation has also been investigated. The acid solubility of such a system makes it advantageous to be used in potential producing formations [22]. A tunable cement-based lost circulation treatment solution has been developed to cure partial and total losses.…”

Section: Introductionmentioning

confidence: 99%

Nanosilica-Based Loss Circulation Composition to Cure Moderate to Severe Losses

Wagle

Kalgaonkar

Al-Yami

et al. 2021

Journal of Energy Resources Technology

View full text Add to dashboard Cite

The loss circulation composition comprising a combination of a nanoparticle-based dispersion and a chemical activator has been designed to treat moderate to severe losses. The nanomaterial used is an environmentally friendly nanosilica-based dispersion. The composition is designed to give delayed gelling of the nanoparticle-based dispersion. A major advantage of this technology is its ability to place the composition into the target loss circulation zone before the nanoparticle-based dispersion gels up. Premature gelling of the nanoparticle-based dispersion would avoid premature setting of the treatment fluid before it reaches the target zone. The newly developed system can be used effectively up to 300 °F. In this paper, experiments have been performed with three different types of nanoparticles differing in their surface charges and particle sizes. Two negatively charged nanoparticle-based dispersions with a particle size of 5 nm and 17 nm, respectively, and one positively charged nanoparticle-based dispersion with a particle size greater than 17 nm have been evaluated as loss circulation materials. Two different types of chemical activators, one organic and the other inorganic, have been used in this study, and their effect on the gelling time has been evaluated. The gelling time experiments have been done at four different temperatures viz. 150 °F, 200 °F, 250 °F, and 300 °F. The effect of activator concentration and different shear rates on the gelling time of the three nanoparticle-based dispersions has been studied. Permeability plugging tests have been performed using 2 mm slotted disks to evaluate the effectiveness in controlling moderate to severe losses.

show abstract

Low-Density Acid-Removable Cement as a Solution for Lost Circulation Across Producing Formations

Cited by 9 publications

References 2 publications

A Novel Solution for Severe Loss Prevention While Drilling Deep Wells

A Novel Solution for Severe Loss Prevention While Drilling Deep Wells

Use of Cement as Lost-Circulation Material: Best Practices

Nanosilica-Based Loss Circulation Composition to Cure Moderate to Severe Losses

Contact Info

Product

Resources

About