Study of materials to combat loss of circulation in fractures and static filtration

Soares, Andréia Silveira Freire; Sousa, Atos Alves de; Calçada, Luís Américo; Scheid, C. M.; Marques, Mônica Regina da Costa

doi:10.1016/j.petrol.2021.108401

Cited by 11 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Experimentally, the primary method for testing the clogging performance of an LCM-drilling fluid mixture has been to use fracture or slot tests, injecting the LCM-laden fluid through the fracture to evaluate its effectiveness [1,7,11,13,22]. This method is ideal However, most LCM selection during drilling is primarily carried out through trial and error and past drilling experiences [5,27].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Lost Circulation Material Sealing for Geothermal Drilling

Kibikas,

Nakagawa,

Ingraham

et al. 2024

Energies

View full text Add to dashboard Cite

Lost circulation is a pervasive problem in geothermal wells that can create prohibitive costs during drilling. The main issue with treatment is that the mechanism of plug formation is poorly understood. Here we applied two experimental approaches to characterize the clogging effectiveness of different materials. Fracture flow tests with different geometries were conducted with various individual materials and mixtures at relevant conditions. A high-temperature flow loop system was also developed to inject single- and mixed-material plugs into a gravel pack with a non-uniform geometry to compare with the fracture tests. The fracture tests revealed that single materials tended to form no plug or an unstable plug, while mixtures of materials were uniformly better at sealing fractures. Gravel pack tests at high temperatures show most of the materials are intact but degraded. The fibrous materials can create partial or unstable plugs in the gravel pack, but mixed-material plugs are far more effective at clogging. Both test types suggest that (1) mixed materials are more effective at blocking fluid flow and (2) fibrous materials seal fracture openings better, while granular materials seal inside fractures or pore throats better. Further research is needed to study the long-term stability of different plug configurations.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of Lost Circulation Material Sealing for Geothermal Drilling

Kibikas,

Nakagawa,

Ingraham

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…The temporary plugging agents commonly used in oil fields mainly include particles, fibers, and gels 6 . Particle temporary plugging agents have the characteristics of adjustable particle size, convenient transportation and construction, and high plugging strength; however, their particle size is too large to be injected for micro‐cracks, and forced injection could lead to particle damage, poor integrity and stability, and the presence of solid particles have a shearing effect on the fluid, which has a greater effect on the rheology of the fluid 7–9 . Fiber plugging agents have the characteristics of lightweight, long length, easy deformation, and easy adsorption to rough rock formation walls.…”

Section: Introductionmentioning

confidence: 99%

Establishment of temperature‐strength response prediction model of supramolecular gel temporary plugging agent by response surface method analysis

Lai,

Tian,

Wang

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, response surface methodology (RSM) was applied to optimize the preparation of a supramolecular gel temporary plugging agent. According to single‐factor experiments, results showed that the gelling temperature was preset at 100°C, and the gelling strength reached the maximum. Three‐factor RSM model prediction was carried out to explore the determination coefficient (R2) of the gelling temperature and strength and their degree of influence, and the predicted results were verified by experiments. No difference was found between the experimental results and the predicted results, indicating that this model could be used to optimize the preparation of DMF supramolecular gels. DSC, FT‐IR, XRD, and SEM were used to investigate the formation mechanism of the optimized supramolecular gel temporary plugging agent (CD‐Da), and its compatibility, stability, rheology, and plugging performance were evaluated. Experimental results showed that CD‐Da has the characteristics of good injectability in low‐permeability rock cores, strong plugging capacity, self‐breaking, and less damage to the formation. Therefore, this study not only provides a stable and efficient supramolecular gel plugging agent for tight oil and gas reservoirs, but also establishes a prediction model between each component and supramolecular gel, providing a new optimization method for the preparation of supramolecular gel.

show abstract

“…Mostly, acid thickener is consisted of natural high-molecular polymers and synthetic high-molecular polymers. Natural high-molecular polymers, such as guanidine gum 14 , konjac gum, and carboxymethyl cellulose 15 , poses defects owing to the poor temperature resistance, decomposition by bacteria, and formation of abundant residue. Synthetic high-molecular polymer is a promising choice for evading the existing challenges.…”

Section: Introductionmentioning

confidence: 99%

Thickening Performance Evaluation and Molecular Dynamics Simulation on Hydrophobic Associated Polymer in Acid Circumstances

Jing,

Liu,

Zhou

et al. 2023

Orient. J. Chem

View full text Add to dashboard Cite

Acid thickener is of necessity for improving the exploitation capacity for oil and gas resources of carbonate reservoirs. Here a hydrophobic associated polymer (HPA) by introducing a nonionic hydrophobic monomer (AO) was designed as the acid thickener. The experimental results demonstrated that HPA suggests excellent acid resistance, shear resistance, and thermal stability attributing to the gradual exposure of hydrophobic chain to H2O circumstances that enhances the strength of hydrophobic association. The square radius of gyration of HPA raises with the introduction of AO confirming the unfold of HPA by intermolecular hydrophobic association, which strengthens the network structure. The decrease of mean square displacement and diffusion coefficient of H2O and H3O+ molecules suggest the enhancement for network structure by hydrophobic chain owing to HPA hindered the diffusion of H2O and H3O+ molecules. These findings are expected to supply a guidance for the design and research on the acid thickener.

show abstract

Study of materials to combat loss of circulation in fractures and static filtration

Cited by 11 publications

References 30 publications

Evaluation of Lost Circulation Material Sealing for Geothermal Drilling

Evaluation of Lost Circulation Material Sealing for Geothermal Drilling

Establishment of temperature‐strength response prediction model of supramolecular gel temporary plugging agent by response surface method analysis

Thickening Performance Evaluation and Molecular Dynamics Simulation on Hydrophobic Associated Polymer in Acid Circumstances

Contact Info

Product

Resources

About