Article
Chemistry, Physical
Xiangru Jia, Xionghu Zhao, Bin Chen, Saviour Bassey Egwu, Zhiyang Huang
Summary: This study aimed to improve the performance of water-based drilling fluids for high temperature, salt, and calcium resistance in deep and ultra-deep wells. By adding copolymers to the drilling fluid, the rheological properties were maintained, filtration volume was reduced, and the drilling fluid successfully resisted high temperatures and high salt concentrations.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Chaoqun Wang, Li Jin, Xiaoying Liu, Ning Zhang, Huasha Liu, Wei Ding
Summary: This study successfully synthesized a copolymer PAD through radical polymerization, which can effectively reduce filter loss in high temperature and high salinity conditions in water-based drilling fluids.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Polymer Science
Jiang Xu, Fu-Chang You, Shu-Sheng Zhou
Summary: This study developed a non-sulfonated filtrate reducer and viscosity reducer with high-temperature resistance for the petroleum development industry. The experimental results showed that these additives effectively reduced filtration loss and provided excellent dispersion and dilution under high-temperature conditions.
Review
Materials Science, Paper & Wood
Yi Pan, Jie Wang, Shuangchun Yang, Jianwei Fu, Yvan Lebongo Eteme
Summary: This review discusses the current research status of hydroxyethyl cellulose (HEC)-based materials in the oil and gas industry. The focus of the research includes viscosity stabilization, anti-tampering and plugging, oil drive, and production increase. The limitations of HEC are highlighted, and suggestions for improvement are made, such as hydrophobic modification of HEC and compounding with polymers to produce HEC-based composites suitable for wider application.
Article
Polymer Science
Zhengwen Lin, Fang Li, Xinyu Liu, Junlin Su
Summary: In this study, a network-structured polymer (DSD-beta-CD) was synthesized using beta-cyclodextrin as the backbone and N,N-dimethylacrylamide, sodium p-styrene sulfonate, and dimethyl diallyl ammonium chloride as monomers. The polymer showed excellent temperature and salt resistance, and had a low viscosity effect. The reduction in filtration loss was attributed to the adsorption of DSD-beta-CD on the surface of bentonite particles through hydrogen bonds and ionic bonds.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Xiaodong Dong, Jinsheng Sun, Xianbin Huang, Jian Li, Kaihe Lv, Pengxin Zhang
Summary: A novel low molecular weight high-temperature resistant filtrate reducer (LDMS) was synthesized in this study, which can maintain the performance of a drilling fluid gel system under high temperature without significantly increasing viscosity and yield point. The LDMS was found to adsorb on the surface of bentonite particles and intercalate into the interlayer, improving the hydration degree of bentonite particles and the colloidal stability of the drilling fluid gel system, resulting in a compact mud cake and significantly reducing the filtrate volume. This work promotes the application of low molecular weight polymer filtrate reducer in high-temperature-resistant water-based drilling fluid gel systems.
Article
Energy & Fuels
Agostinho C. B. Junior, Raphael R. Silva, Giovanna L. R. Leal, Tarsila M. Tertuliano, Rafael P. Alves, Alfredo I. C. Garnica, Fabiola D. S. Curbelo
Summary: This study investigated the influence of nonionic surfactant NP100 and pine oil on the microemulsified drilling fluids, with results showing that the oil phase had the most impact on filtrate volume, while the surfactant had the most impact on filter-cake thickness. Optimal concentrations of 45% surfactant and 5% pine oil resulted in the lowest filtrate volume, while concentrations of 45% surfactant and 15% pine oil resulted in the thinnest filter-cake.
Article
Polymer Science
Xiaodong Bai, Lianci Wu, Yuru Zhang, Moubo Wang, Yu Chen, Yumei Luo
Summary: In this study, a zwitterionic copolymer PANDS was synthesized and its filtration reduction performance in high-temperature and high-salt environment was evaluated. The results demonstrate that PANDS exhibits good temperature resistance and filtrate loss reduction.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Fengbao Liu, Jinsheng Sun, Xianbin Huang, Yuan Geng
Summary: A low-molecular-weight filtrate reducer with high-temperature resistance was prepared and characterized in this study. The obtained reducer exhibited good thermal stability and had a significant impact on the viscosity and filtration performance of mud samples.
Article
Energy & Fuels
Husameldin Mahmoud, Mohammed Alhajabdalla, Mustafa S. Nasser, Ibnelwaleed A. Hussein, Ramadan Ahmed, Hamidreza Karami
Summary: This study investigates the impact of adding fiber on the cutting carrying capacity of polymeric suspensions, with findings that increasing anionicity improves suspension carrying capacity and the addition of fiber enhances this capacity, particularly beneficial for hole cleaning performance of water-based drilling fluids.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Guobao Zang, Zhili Zhang, Decai Li
Summary: The effect factors on the fluidity of magnetic fluid at low temperatures were explored. The magnetic fluid was prepared by dispersing stearic acid and oleic acid-modified particles into kerosene, and the volume fraction was considered. The microstructure and morphology of the particles, as well as the surfactant content on the surface, were analyzed. The hysteresis loops of magnetic particles and magnetic fluids were obtained, and the viscosity of the magnetic fluid was measured by a rheometer.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Yuanhao Luo, Ling Lin, Pingya Luo, Yongjun Guo, Shuixiang Xie, Meirong Wang, Guixia Xiong, Han Gu
Summary: High temperatures can degrade drilling fluid performance, posing a risk to drilling safety. Therefore, it is crucial to develop a new high-temperature drilling fluid additive to maintain drilling fluid performance in high-temperature environments. A polymer nanocomposite (ADA@SM) was synthesized and found to have a star-net structure, good thermal stability, and improved particle size distribution and colloidal stability in high temperature environments.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Fahd Saeed Alakbari, Mysara Eissa Mohyaldinn, Mohammed Abdalla Ayoub, Ali Samer Muhsan, Anas Hassan
Summary: This study introduces new statistical-based empirical correlations for the prediction of apparent and plastic viscosities in drilling fluids, emphasizing the importance of monitoring these properties during drilling operations. The established correlations demonstrate robustness and high accuracy through Response Surface Methodology (RSM) and ANOVA validation, showing the influence of independent variables and interactions between them on the viscosities. The results suggest that the RSM model is accurate, reliable, and suitable for precise prediction of apparent and plastic viscosities.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Polymer Science
Wenjun Long, Xialei Zhu, Fengshan Zhou, Zhen Yan, Amutenya Evelina, Jinliang Liu, Zhongjin Wei, Liang Ma
Summary: In this study, a environmentally friendly and low-cost drilling fluid filtrate reducer was prepared using plant press slag, which showed good performance in high temperature and high concentration salt water. The filtration loss performance of the filtrate reducer can meet the standards specified for water-based drilling fluid materials in the petroleum industry.
Article
Mechanics
Young H. Lee, Jingyi Wang, Ian D. Gates
Summary: We conducted experimental study on the effects of normal stress differences in the immiscible radial viscous fingering instability in a Hele-Shaw cell. The results showed that the effects were nonmonotonic and opposing, depending on the molecular weight of the displaced fluid and the stage of the fingering evolution. Decreases in molecular weight reduced the number of fingers and widened the finger width in the early stage, while increases in molecular weight promoted tip splitting and narrowed finger width in the early stage but suppressed tip splitting in the intermediate stage.
