Research and Application of New Anti-CO2 Pollution and Low Damage Water-based Drilling Fluid DOI Open Access

Mingna Bai,

Yonggang Xie,

Huai‐Yu Cheng

et al.

Published: July 29, 2023

CO2 intrusion into the drilling fluid during bauxite can cause hydration swelling and dispersion of clays lead to massive foaming them.Additionally, formation develops micro-nano fractures, which also have a large difference in compressive strength high percentage bound water.Once foreign invades, it will wellbore destabilization reservoir damage.Thus, designed formulation does not contain solid phase particles such as bentonite.And we obtained optimal proportion hydrolocker, penetrant, defoamer by Mixture Designs.Then shielding plugging theory was introduced, temporary gradation consisting acid-soluble inert particles, deformable nano-sealers, non-permeable sealers constructed with aid BridgePro software.And other surfactants were optimized indoors build lowdamage, strong anti-CO 2 pollution water-based fluid.It could resist temperature 150℃ has remarkable ability lower surface tension (17.3mN).The rolling recovery, rate, permeability recovery value reach more than 90%, lubrication coefficient around 0.125.The completed 9 wells field application, an obvious protection effect average increase 20% single-well daily production compared expected production.It be important reference for future horizontal well fluids prevent contamination reduce damage.

Language: Английский

Genesis of Carboniferous aluminous-bearing strata in the northern part of the North China Craton: A case study of the Xingxian bauxite deposit DOI Creative Commons
Junwei Lin, Shangqing Zhang, Dongna Liu

et al.

Ore Geology Reviews, Journal Year: 2024, Volume and Issue: 170, P. 106125 - 106125

Published: June 19, 2024

More than five billion tons of karstic bauxites were formed in the North China Craton (NCC) during Late Carboniferous period. Compared to bauxite ore, genesis entire aluminous-bearing strata has received less attention. In this study, we conducted geological, mineralogical, and geochemical analyses on core samples from located Xingxian area, situated within northern NCC, aiming elucidate genetic process these formations. The consist a layer (diaspore–anatase–kaolinite–florencite) sandwiched between upper sandy claystone horizon (kaolinite–illite–quartz) lower berthierine-bearing (berthierine–diaspore–hematite–goethite). Based continental crust-normalized patterns rare earth elements yttrium (REY), immobile trace element ratios, mineral inheritance diagrams, previous findings, it is suggested that was weathered impure limestone at bottom, whereas mainly originated intermediate-felsic igneous rocks margin granite Qinling Orogenic Belt, aluminosilicate surrounding paleo-uplifts. During early diagenetic stage, berthierine transformed under alkaline reducing conditions iron-rich clays (composed clay minerals, ferric etc.) acidic oxidizing underlying limestone. coexistence with low-temperature stability diaspore observed claystone, which precludes high-temperature origin strata. Moreover, characterized by small crystal size usually poorly crystallized, suggesting supergene precipitation-diagenesis origin. paragenetic minerals assemblages (e.g., diaspore, berthierine, goethite, hematite, suggest primarily transition zone nearer phreatic environment. Large-scale volcanism warm, humid climatic accelerated decomposition allochthonous weathering materials, resulting downward migration metal ions. These ions then precipitated weakly environment, giving rise form ore dominated anatase, REY minerals.

Language: Английский

Citations

5
Summary of sulfur hazards in high‑sulfur bauxite and desulfurization methods DOI
Yishan Liu, Yan Liu, Ting‐an Zhang

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174631 - 174631

Published: Oct. 1, 2024

Language: Английский

Citations

5
Provenance and genesis of karstic bauxite deposits in China: Implications for the formation of super-large karstic bauxite deposits DOI
Xuefei Liu, Lihua Zhao, Qingfei Wang

et al.

Earth-Science Reviews, Journal Year: 2024, Volume and Issue: 257, P. 104882 - 104882

Published: July 29, 2024

Language: Английский

Citations

3
Fractal characteristics of micropore structure of Taiyuan Formation bauxite reservoir in Longdong area of Ordos Basin DOI Creative Commons
Yue Dong, Xiaochen Yang, Chenger Hu

et al.

Journal of Computational Methods in Sciences and Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

As an unconventional gas reservoir, bauxite reservoirs have often been studied as weathered crust cover layers rather than in the past. The Taiyuan Formation Longdong area of Ordos Basin has achieved breakthroughs, and some wells obtained industrial airflow. Therefore, it is necessary to conduct basic geological research on reservoir. application casting thin sections, scanning electron microscopy (SEM), X-ray diffraction (XRD), high-pressure mercury injection (HPMI), low-temperature nitrogen adsorption (L-TNA) techniques provides a comprehensive framework for studying reservoir characteristics well micropore fractal structure. results indicate that (1) logging high natural gamma (500API) low acoustic wave time difference (60–90 us/m), with being most critical parameter identifying curve. (2) rocks region belong sedimentary formation, three types micro ancient landforms (buried pits, terraces, grooves) different lithological combinations. Among them, combination buried pits carbonaceous mudstones subjected freshwater leaching long time, thickness largest. (3) pores are mainly dissolution within particles, intergranular pores, microcracks. average porosity 8.49%, permeability 0.261 × 10 −3 μm 2 , standard greater 0.4 accounting 17.19%. (4) dimension D2 D1 nanopore were calculated by experiments, respectively. Through correlation analysis, we found (calculated from data) more effectively characterizes quality nanopores compared (HPMI). We established classification evaluation standards: Type I 2.2∼2.6, II 2.6∼2.8, III 2.8∼3. Class high-quality can be preferred target exploration study area.

Language: Английский

Citations

0
Smectite as the lithium-rich mineral precursor: Key to lithium enrichment in claystone from Central Yunnan, Southwest China DOI Creative Commons
Ye Qin,

Chongguang Luo,

Hanjie Wen

et al.

Ore Geology Reviews, Journal Year: 2025, Volume and Issue: unknown, P. 106586 - 106586

Published: March 1, 2025

Language: Английский

Citations

0
Provenance and Tectonic Evolution of Bauxite Deposits in the Tethys: Perspective From Random Forest and Logistic Regression Analyses DOI Creative Commons

Jintao Zhou,

Wenchao Yu, Wei Wei

et al.

Geochemistry Geophysics Geosystems, Journal Year: 2023, Volume and Issue: 24(6)

Published: June 1, 2023

Abstract Developments in Earth system research have led to widespread interest multi‐sphere interactions that may controlled bauxite formation. Although karst ores are abundant the Tethyan Metallogenic Domain (TMD), their genesis and distribution not yet fully understood. This study utilizes Random Forest (RF) model analyze geochemical data sets compiled from three provinces Tethys, including Mediterranean, Central Asian, Chinese provinces. Meaningful variables among provenance, paleolatitude tectonic setting affected formation of deposits identified. The Logistic Regression is used verify importance various factors. Our shows when RF achieves best classifier performance, TiO 2 variable has greatest impact on model. content highest Asian Province. high bauxites indicates a provenance magmatic origine associated with Subduction Provenance Zone. Bauxites similar continental basement derived siliciclastic carbonate rocks, identified as Orogenic illustrates novel link between compositions (TiO content) bauxites, regional setting.

Language: Английский

Citations

9
Geochemical features of lithium–rich bauxite from the Benxi Formation in Qinyuan County, Shanxi, China: Insights into their depositional environment and lithium enrichment DOI Creative Commons
Hao Zhao,

Zhenxiao Wu,

Shangqing Zhang

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 163, P. 105780 - 105780

Published: Nov. 21, 2023

Most bauxites in China are the karst type, which usually enriches lithium (Li) resources. Therefore, Li mineralization theory must be further developed to realize comprehensive utilization of bauxite The Qinyuan Li–rich is formed Benxi period Late Carboniferous and its parent rock underlying Ordovician limestone. In this study, methods stepwise extraction element geochemical utilized discuss occurrence state sedimentary environment bauxite, respectively. Based on differences composition, sequence can divided into clay rocks, bauxitic clays, iron–rich from bottom top. content highest rocks (averaging 431 µg/g), followed by clays 288 252 202 µg/g). main mineral compositions these samples diaspore, calcite, anatase, pyrite, siderite, kaolinite, illite. Among them, positively correlated with contents (R2 = 0.71), indicating that minerals minerals. More specifically, positive correlation between kaolinite 0.46) indicates mineral. Nevertheless, illite, illite 0.54) higher than 0.10), preferentially enriched when coexist. It was found majority (higher 99 %) hosted vacant sites Si–O tetrahedral layers Al–O dioctahedral compensate charge deficit caused replacement Si4+ Al3+ minerals, Furthermore, ratios typical elements varied migration–deposition properties indicate depositional bauxite. MgO/Al2O3 Rb/K (range from1.3 × 10-3 7.36 10-2 3 10-4 3.44 samples, respectively) environment. Th/U, V/Cr, V/(V + Ni) 0.45 3.73, 0.85 3.54, 0.27 0.89 paleo–redox conditions. Sr/Cu, CIA, Cvalue from3.53 48.2, 93.8 99.9, 0.43 7.29 paleoclimate. results show possibly hot, humid (Sr/Cu > 5, CIA 85–100, 0.8), dysoxic–anoxic (Th/U 2–7, V/Cr 2–4.25, 0.46–0.84) marine–continental transitional (MgO/Al2O3 0.01–0.1 4 10-3–6 10-3)

Language: Английский

Citations

9
Advance review on occurrence state and leaching of lithium in sedimentary bauxite (aluminum) deposits, China DOI Creative Commons

Zhenxiao Wu

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 164, P. 105851 - 105851

Published: Dec. 25, 2023

Bauxite-associated type Li resource is mainly discovered in the sedimentary bauxite (aluminum) deposits forming areas, especially Northern Guizhou-Southern Chongqing, Western Henan and Central Guizhou, China. This paper reviews enrichment mechanism occurrence states of deposits. The these derived from underlying carbonate rock, favorable environment, e.g., alternation climate dry humid, marine-continental transitional zone with reduction-weak oxidation low salinity, conducive to hosted by independent mineral (i.e., cookeite), partly adsorbed montmorillonite, rarely illite/kaolinite. Furthermore, leaching methods affecting factors bauxite-associated are summarized. Acid solution main solution, but its excessive use can generate abundant acidic residues, which have hazards environment. Thereby, little or no acid has been recommended. calcination temperature, time, liquid–solid ration particle size. above summary deepens understanding deposits, potential promote resource, initially considered uneconomical, become an important economic source Li.

Language: Английский

Citations

5
Research and Application of New Anti-CO2 Pollution and Low Damage Water-based Drilling Fluid DOI Open Access

Mingna Bai,

Yonggang Xie,

Huai‐Yu Cheng

et al.

Published: July 29, 2023

CO2 intrusion into the drilling fluid during bauxite can cause hydration swelling and dispersion of clays lead to massive foaming them.Additionally, formation develops micro-nano fractures, which also have a large difference in compressive strength high percentage bound water.Once foreign invades, it will wellbore destabilization reservoir damage.Thus, designed formulation does not contain solid phase particles such as bentonite.And we obtained optimal proportion hydrolocker, penetrant, defoamer by Mixture Designs.Then shielding plugging theory was introduced, temporary gradation consisting acid-soluble inert particles, deformable nano-sealers, non-permeable sealers constructed with aid BridgePro software.And other surfactants were optimized indoors build lowdamage, strong anti-CO 2 pollution water-based fluid.It could resist temperature 150℃ has remarkable ability lower surface tension (17.3mN).The rolling recovery, rate, permeability recovery value reach more than 90%, lubrication coefficient around 0.125.The completed 9 wells field application, an obvious protection effect average increase 20% single-well daily production compared expected production.It be important reference for future horizontal well fluids prevent contamination reduce damage.

Language: Английский

Citations

0