Permeability variation associated with fines production from anthracite coal during water injection

Guo, Zhenghuai; Hussain, Furqan; Cinar, Yildiray

doi:10.1016/j.coal.2015.06.008

Cited by 72 publications

(42 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wei et al (2015) experimentally demonstrated the critical flux for coal fines generation, and proposed a maximum water production for a particular CSG well. Guo et al (2015Guo et al ( , 2016 conducted a series of core flooding tests using water to quantify the permeability variations caused by coal fines production. They conclude that the variation of permeability generally matches with the trend of coal fines production (i.e.…”

Section: Accepted Manuscript 1 Inmentioning

confidence: 99%

Experimental investigation on the impact of coal fines generation and migration on coal permeability

Bai

Chen

Aminossadati

et al. 2017

Journal of Petroleum Science and Engineering

View full text Add to dashboard Cite

Measurements of the coal fines production and the impact of these fines on the permeability of two coals from the Bowen Basin, Australia, were performed at different flow conditions (single-phase water or gas, two-phase water and gas) and pressure conditions. The fines collected from each coal samples ranged in size from 1 µm to 14 µm. For both coal samples, during the first 50 hours, the permeability decreases from 0.005 mD and 0.048 mD by 60.9% and 85%, respectively, followed by gradual decline with fluctuations. By the end of water injection, the permeability drops by 88% and 89%, respectively. This phenomenon is attributed to the counteraction between formation damage (cleats plugging and coal fines settlement) and breakthrough of coal fines from the samples (widened cleats). It was found that coal fines volumetric production is proportional to the third power of flow velocity once the flow paths for coal fines are established. The critical flow velocities of coal fines production for both samples were also obtained. For hydrophobic coal, water-drive-gas two-phase flow introduces abrupt permeability loss due to coal fines generation and migration. Furthermore, pauses (well shut-in) in the experiments cause slight permeability drops. A comparison between the two samples indicates that narrower and less connected cleating system results in more frequent coal fines generation and migration, resulting in significant permeability fluctuations with general decreasing trend. Tortuosity of the cleats can enhance the deterioration in permeability by coal fines behaviours. This study delivers fundamental understandings of coal fines generation and migration during the CSG production process, and useful guidelines are suggested to be implemented in the field to minimize production loss induced by coal fines behaviours.

show abstract

Section: Accepted Manuscript 1 Inmentioning

confidence: 99%

Experimental investigation on the impact of coal fines generation and migration on coal permeability

Bai

Chen

Aminossadati

et al. 2017

Journal of Petroleum Science and Engineering

View full text Add to dashboard Cite

show abstract

“…This permeability decrease was observed under both brine and supercritical CO 2 transport, where the intensity of Sc-C is slighter higher than the high salinity water, in which long period of stabilization and decline was recorded. Furthermore, increasing ow rate velocity deteriorates the permeability by nes penetration and capture in the porous rocks (Guo et al 2015;Oliveira et al 2014). It was also reported that increasing level of NaCl concentration in the injected water and also, fresh water transport cause high retention of nes in the porous rocks and subsequently, contributing to reduction in the rock permeability (Yu et al 2018).…”

Section: Pressure Change and Permeability Declinementioning

confidence: 96%

“…This sharp fall in the produced uid recovery rate is due to structural collapse and coal nes production, and mainly, kaolinite clay nes migration. Furthermore, nes comprising porous rocks undergo a colloidal-suspension ows under external uid injection, especially water ow and this causes nes to detach from the rock and nally migrate and entrap in the pore-throats and cleats areas of rock, where the damaging the permeability and declining the recovery of the injected uid (Chequer et al 2018;Russell et al 2014;Guo et al 2015;Kalantariasl et al 2014). Moreover, reduction in the surface energy and pore-straining in the porous rocks gradually lead to injectivity decline (Kanimozhi et al 2018;Gomes et al 2017).…”

Section: Injectivity Decline and Co 2 Retentionmentioning

confidence: 99%

“…Speci cally, India has tremendous potential for the extraction of methane from coal beds (Rathi et al 2019). Concurrently, the CBM reservoirs with clay mineral deposits are highly susceptible to reservoir formation damage due to nes (inorganic minerals) and coal nes (tiny fragment from broken coal matrix) migration under hydrodynamic and thermodynamic forces Guo et al 2018;Huang et al 2018;Zhao et al 2018;Zhao et al 2016;Valentim et al 2016;Han et al 2015;Bai et al 2015;Guo et al 2015;Zeinijahromi et al 2012;Seidle 2011). Actually, kaolinite clay minerals are located in several sedimentary formations, especially in sandstone and carboniferous rocks, and moreover, kaolinite occurs through dissolution of feldspar at extreme temperature and geochemical alterations (Mahalingam et al 2019;Kanimozhi et al 2019a).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Rajkumar

Antony

Mahalingam³

et al. 2020

Preprint

View full text Add to dashboard Cite

A laboratory based investigation has been conducted on permeability damage and CO2 storage or retention in the lignite core during alternative injection of brine and supercritical carbon dioxide. Moreover, anthracite and bituminous coal beds were focused by the scientific community for effective production and reservoir formation damage study. But, now-a-days, lignite based coal bed methane reservoirs have attracted attention for productive exploitation and formation collapse investigation. Hence, for this purpose, a single component injection two phase (Brine + Supercritical CO2) coreflood test analysis under alternative injections were performed to investigate the occurrence of lignite structural collapse, permeability damage, injectivity decline and CO2 retention as well. The experimental study reveals that, due to gravity segregation there is a high rate of fluid saturation in lignite core and also, moderate level of heat transfer coefficient was also noted. Also, lignite core structural collapse under the brine and supercritical CO2 injection at different velocities resulted in huge volume of coal and kaolinite fines concentration. Kaolinite and coal fines migration resulted in pressure change and permeability decline in lignite core. The suspensions produced were passed to microstructural analysis and it revealed that kaolinite fine particle tends to possess a leaflet geometrical structure, which obstructed the cleats and restricted the fluid flow. Subsequently, hysteresis modelling (Pranesh 2018) was applied to this problem to quantify the amount of CO2 retention in lignite core. Additionally, statistical model, multiple linear regression was applied to this problem to validate the experimental model, which showed good agreement.

show abstract

“…In order to evaluate the impact of coal fines on CSG production efficiency, Guo et al (2015b) performed water core flooding tests to monitor real-time permeability variations. Effluents with coal fines were collected and analysed in terms of concentration.…”

Section: Introductionmentioning

confidence: 99%

Integrated geomechanical, geohydraulic and geological (3G) study of coal fines generation and migration

Bai¹

View full text Add to dashboard Cite

This study, considering the Geomechanical, Geohydraulic and Geological (3G) aspects, delivers fundamental understandings of coal fines generation and migration during the CSG production processes, and useful guidelines are suggested to be implemented in the field to minimize production loss induced by coal fines behaviours. v Declaration by author This thesis is composed of my original work, and contains no material previously published or written by another person except where due reference has been made in the text. I have clearly stated the contribution by others to jointly-authored works that I have included in my thesis. I have clearly stated the contribution of others to my thesis as a whole, including statistical assistance, survey design, data analysis, significant technical procedures, professional editorial advice, financial support and any other original research work used or reported in my thesis. The content of my thesis is the result of work I have carried out since the commencement of my higher degree by research candidature and does not include a substantial part of work that has been submitted to qualify for the award of any other degree or diploma in any university or other tertiary institution. I have clearly stated which parts of my thesis, if any, have been submitted to qualify for another award. I acknowledge that an electronic copy of my thesis must be lodged with the University Library and, subject to the policy and procedures of The University of Queensland, the thesis be made available for research and study in accordance with the Copyright Act 1968 unless a period of embargo has been approved by the Dean of the Graduate School.

show abstract

Permeability variation associated with fines production from anthracite coal during water injection

Cited by 72 publications

References 41 publications

Experimental investigation on the impact of coal fines generation and migration on coal permeability

Experimental investigation on the impact of coal fines generation and migration on coal permeability

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Integrated geomechanical, geohydraulic and geological (3G) study of coal fines generation and migration

Contact Info

Product

Resources

About