Resource utilization from solid waste originated from oil-based shale drilling cutting during shale gas development

Zhang, Gaoyin; Zhao, Feng; Cheng, Xiaowei; Huang, Sheng; Zhang, Chunmei; Zhou, Ming; Mei, Kaiyuan; Zhang, Liwei

doi:10.1016/j.chemosphere.2022.134318

Cited by 11 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Barite (BaSO 4 ) is an essential non-metallic mineral that is widely used in oil and gas drilling, chemical engineering, metallurgy, and other industrial fields [1][2][3], particularly plays a vital role as a mud weighting reagent in oil and gas drilling [4][5][6]. As a major country in terms of barite reserves and consumption [7,8], long-standing issues with rough development and over-consumption, led to a composition of "poor, fine, mixed" and resulted in a shortage of high-quality barite. Simultaneously, a significant quantity of barite is transported from the well to the surface as a drilling mud weighting agent and the waste drilling fluid created in this process is considered hazardous waste with high-risk factors.…”

Section: Introductionmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

High-density waste drilling fluid contains an abundance of recyclable weighting reagents, direct disposal can pollute the environment. In this paper, the primary mineral composition of a high-density waste drilling fluid from a well in the southwest oil and gas field was analyzed. This paper proposes β-cyclodextrin (β-CD) as a depressant for the recovery of barite from waste drilling fluid. The recovery process was investigated through inverse flotation experiments, and the mechanism was analyzed using zeta potential, contact angle analysis, and FTIR. The flotation experiments showed that under the SDS flotation system, when the pH was 9.0 and the amount of depressant β-CD was 900 g/t, the barite recovery and density reached the highest values, which were 87.41% and 4.042 g/cm3, respectively. Zeta potential experiments, contact angle analysis, and FTIR analysis indicate that β-CD adsorbed onto barite through enhancing the hydrophilicity of barite, electrostatic force adsorption, and strong adsorption, which could not be displayed by SDS through competitive adsorption. Furthermore, β-CD exhibited a selective inhibitory effect on barite and enabled reverse flotation. The mechanism model of the flotation separation process was established.

show abstract

Section: Introductionmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…At present, there are several relatively mature technologies (e. g., thermal desorption, biodegradation and advanced oxidation) for the treatment of OBDCs, which can effectively remove petroleum pollutants from OBDCs, but there are still some drawbacks, such as high treatment cost, complex operation, secondary pollutants and low resource utilization rate [9–14] . Microemulsion chemical cleaning technology not only has a low treatment cost and simple operation but also has a good petroleum removal effect.…”

Section: Introductionmentioning

confidence: 99%

“…[8] At present, there are several relatively mature technologies (e. g., thermal desorption, biodegradation and advanced oxidation) for the treatment of OBDCs, which can effectively remove petroleum pollutants from OBDCs, but there are still some drawbacks, such as high treatment cost, complex operation, secondary pollutants and low resource utilization rate. [9][10][11][12][13][14] Microemulsion chemical cleaning technology not only has a low treatment cost and simple operation but also has a good petroleum removal effect. Based on the thermodynamically stable surfactant-oil-water system formed by microemulsion and its low petroleum-water interfacial tension and strong solubilization ability, the technology can effectively dissolve petroleum pollutants in OBDCs and encapsulate them in microemulsion to achieve separation.…”

Section: Introductionmentioning

confidence: 99%

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Li,

Yue,

Wen

et al. 2023

ChemistrySelect

View full text Add to dashboard Cite

Surfactant‐free microemulsions (SFMEs) cleaning technology can effectively separate and recover petroleum pollutants from oil‐based drilling cuttings (OBDCs). The identification of the molecular composition of OBDCs is helpful to accurately grasp the conversion mechanism of organic matter. Therefore, the understanding of the mechanism of petroleum removal at the microscopic molecular level in the cleaning process needs to be further studied. The conversion mechanism of organic matter during the use of SFMEs to clean OBDCs was investigated by positive ion atmospheric pressure photoionization Fourier transform ion cyclotron resonance mass spectrometry (+APPI FT‐ICR MS). The results show that the SFMEs cleaning technology can separate and recover CH and CHO organic matter in OBDCs, but there is still a small amount of organic matter with high molecular weight and unsaturated degree in OBDCs that has not been separated. The majority of this organic matter is CH, accounting for 91 %, and it is mainly polycyclic aromatic hydrocarbons. A total of 255 kinds of organic matter in 110# industrial white oil were detected in the recovered oil after treatment, accounting for more than 99 % of the total, which has a certain recoverable value. This study can provide a theoretical reference for the efficient degradation of OBDCs.

show abstract

“…There are strict regulations on the disposal and discharge of oily cuttings in most countries, and these are becoming more and more stringent. Among various treatment methods of oil-based cuttings and oil-contaminated soil, thermal desorption is the one that has strong adaptability to material characteristics, high treatment efficiency, less secondary pollution, and convenient resource recovery, which have obvious advantages in industrial application. − …”

Section: Introductionmentioning

confidence: 99%

Thermal Desorption Process Simulation and Effect Prediction of Oil-Based Cuttings

2022

View full text Add to dashboard Cite

The disposal effect of thermal desorption of oil-based cuttings is predicted by analyzing the material temperature rise, heat transfer, and liquid evaporation in the processing. Based on the characteristics of material conveying in the heating bed, this paper establishes the governing equations for the simulation calculation of thermal desorption processing and demonstrates the correlation model between the mass change of wet components and the heat required. Changes in the material temperature and mass content of wet components in the process are calculated using the finite-volume method. The minimum temperature of the material layer experienced three stages: slow rising stage, stagnation stage, and rapid rising stage. In the first two stages, material preheating and water evaporation are the dominant processes. The third stage is mainly the evaporation of the oil phase. The inflection point between the second and third stages in the temperature rise curve can be regarded as the end point of water evaporation. During conveying, residence time and material layer thickness significantly influence the liquid phases removal ratio. The material drying area gradually expands from the boundary to the center with the extension of residence time, and the average mass fraction of liquids decreases slowly. The evaluation results from the final temperature and residual oil content of solid slag after disposal are consistent with the tests and have better accuracy in predicting the disposal effect when the heating temperature is higher and the residence time is longer.

show abstract

Resource utilization from solid waste originated from oil-based shale drilling cutting during shale gas development

Cited by 11 publications

References 34 publications

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Conversion Mechanism of Organic Matter While Cleaning Oil‐Based Drilling Cuttings Using Surfactant‐Free Microemulsions

Thermal Desorption Process Simulation and Effect Prediction of Oil-Based Cuttings

Contact Info

Product

Resources

About