Slag mix mud conversion cementing technology: Reduction of mud disposal volumes and management of rig-site drilling wastes

Nahm, J.J.; Javanmardi, Kazem; Cowan, K.M.; Hale, A.H.

doi:10.1016/0920-4105(94)90058-2

Cited by 12 publications

(4 citation statements)

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“…Alkali-activated slag cements have been reported for applications of sealing in salt and sulphur mines and for hydrotechnical operations [62][63][64], in oil well sealing [65], for CO 2 storage and sequestration applications [56], and in the conversion of drilling mud to cementitious slurries [66][67][68][69]. Recent patents demonstrate an ongoing interest in the use of these materials in downhole applications [69,70].…”

Section: Alkali Activated or Geopolymeric Systemsmentioning

confidence: 99%

“…If successful, this conversion could reduce mud disposal costs, significantly improve annular cementing efficiency, and reduce costs associated with staffing/manpower, equipment, time, and materials [89]. Little detail exists on how this conversion could give desirable cementing properties, but some researchers have suggested the use of BFS [19,[66][67][68]. Additions of ground granulated BFS (GGBS) to a mud along with a suitable alkaline activator, such as sodium hydroxide or calcium hydroxide, could form C-S-H-type phases similar to those from the hydration of Portland cement but with lower Ca/Si ratios [90].…”

Section: Other Cementing Systemsmentioning

confidence: 99%

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A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste

2019

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Cementitious grouts are being developed for use as sealing and support matrices (SSMs) in deep borehole disposal (DBD) where temperatures do not exceed 190 °C. They will seal radioactive waste containers into the bottom 2 km of holes drilled up to 5 km deep into the crystalline basement. The temperature and pressure is likely to be similar to those in hydrocarbon and geothermal energy wells, where grout placement and durability are affected. This paper reviews the potential cementing systems suitable for this application and explains why a single solution of a formulation of Class G oil well cement, silica flour, water, fluid loss additive, and retarding admixture has been selected. This type of formulation has been used extensively for over 100 years in well cementing. It should provide the short-term performance and durability required for an SSM, maintaining the seal around the waste packages within the disposal zone long after the boreholes are sealed back to the surface, and thus augmenting the safety case for DBD.

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Section: Alkali Activated or Geopolymeric Systemsmentioning

confidence: 99%

Section: Other Cementing Systemsmentioning

confidence: 99%

A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste

2019

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“…In addition, insufficient recognition of in situ drilling slurry depth leads to a certain blindness in the extension of drilling depth. Thus, the study of drill hole debris disposal will be highly valued in particular engineering applications [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Application of Treatment for Deep Hole Drilling Debris in Gas-Rich Soft Coal Seams

Niu

Wang

et al. 2023

Geofluids

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Hole accidents occurring in the drilling process and borehole collapse encountered in gas production are obstacles standing in the way of high efficiency of gas drainage through the outburst-prone soft coal seams in China. The fundamental testing data from existing suspending agents were combined to prepare a suspension in a specific density for testing debris disposal technology considering several adverse effects. Those effects include the sizeable residual volume of drilling debris, difficult debris disposal, the low effective utilization rate of drill holes, and the unideal extraction effect in drill holes with long-distance downward drill holes. The testing outcomes indicated that the suspension-aided debris disposal could contribute to the following aspects: discharging residual drilling debris out of the drill hole, rinsing the drill hole, preventing drilling debris from filling the coal seam, providing the adequate drill hole depth, and improving the effects of gas extraction. As a result, the gas production in shallow drill holes was increased by 40%, with gas concentration elevated by 21%. In addition, the scalar quantity and extraction concentration in the gas concentration of deep drill holes were increased by 84% and 260%, respectively. This study was undertaken to provide a specific reference for debris disposal work of deep drill holes for gas-rich soft coal seams.

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“…Numerous studies suggest the use of a universal drilling fluid containing granulated blast furnace slag as addition (between 25 and 35 %); after which it has initiated the use of cement slurries with a variable percentage of granulated slag replacement (between 20 and 40%) [7,8]. This process has been used successfully in the horizontal well cementing and it has been observed that the losses are minimized as common circulation in these cases and it is easier to use than the conventional process [9,10]. The aim of this study is to increase understanding of the hydration process that occurs in these kinds of slurries.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Cementing Composites with Blast Furnace Slag Replacement

Sánchez-Ramírez

Díaz˗Cruz²,

Torre³

et al. 2014

AMR

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In this work, they were produced and characterized cementing composites made with blast furnace slag replacement, for their use in the construction of oil wells. To this, slurries were prepared with a replacement of 20 and 30% slag, as well as a slurry with 100 % slag and a slurry with 100% H-cement were prepared. Starting materials were characterized by chemical analysis, X-ray diffraction and Fourier Transformed Infra Red. Slurries also were activated with sodium silicate in order to study theirs hydration kinetics, driving by isothermal calorimetry. These studies were complemented by the preparation of specimens of 4 X 4 X 16 cm to which they determine its compressive and bending strength during 2 and 28 days of curing. From the results it can be concluded that it was obtained a product that can be effectively used in the construction of oil wells.

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Slag mix mud conversion cementing technology: Reduction of mud disposal volumes and management of rig-site drilling wastes

Cited by 12 publications

References 1 publication

A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste

A Review of Potential Cementing Systems for Sealing and Support Matrices in Deep Borehole Disposal of Radioactive Waste

Application of Treatment for Deep Hole Drilling Debris in Gas-Rich Soft Coal Seams

Development and Characterization of Cementing Composites with Blast Furnace Slag Replacement

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