Lignin-based plugging hydrogel with high-temperature resistance and adjustable gelation DOI Creative Commons
Haibo Liu, Xiaomeng Li,

Zheng Pan

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 12, 2024

Abstract Lost circulation is a prevalent and intricate phenomenon in the domain of oil gas drilling, which has resulted significant economic losses for global industry. Common gel lost materials have been observed to exhibit deficiencies temperature resistance strength. In this study, lignin-based plugging hydrogel (Lig-plugel) was prepared using simple method. The employed self-crosslinking mechanism lignin high-temperature environment, reduced quantity crosslinker, achieved objective regulating gelation time, enhanced its mechanical properties. maximum compressive strain Lig-plugel synthesised at 200°C with 25 wt% crosslinker amount reached 76.83%, strength toughness 1.85 MPa 276.13 KJ/m3, respectively. Furthermore, exhibits excellent heat resistance. It demonstrates minimal mass loss during thermal decomposition environments below 220°C, sufficient applications. Additionally, simulated experiments indicate that an effective effect adaptable. This study presents environmentally friendly sustainable solution problem broad application prospect field drilling.

Язык: Английский

Lignin-based plugging hydrogel with high-temperature resistance and adjustable gelation DOI
Haibo Liu, Xiaomeng Li,

Zheng Pan

и другие.

Advanced Composites and Hybrid Materials, Год журнала: 2025, Номер 8(1)

Опубликована: Янв. 7, 2025

Язык: Английский

Процитировано

2
Visualization study on migration characteristics of high-stability gel foam in fractures of fractured-vuggy reservoirs DOI
Xin Yan, Binfei Li,

Yong-Jin Song

и другие.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 136892 - 136892

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

1
Valorization of sewage sludge organic matter for polyacrylamide-based greener hydrogel production with good salt resistance and high permeability DOI
Fan Gao, Lijian Leng, Huan Yang

и другие.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 136418 - 136418

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Experimental research on the optimization and evaluation of the polymer/Cr 3+ deep profile control system for heterogeneous fractured low-permeability reservoirs DOI
Kai Liu, Xinling Zhang,

Mingguo Peng

и другие.

Journal of Dispersion Science and Technology, Год журнала: 2025, Номер unknown, С. 1 - 15

Опубликована: Фев. 14, 2025

Язык: Английский

Процитировано

0
Ultra-high temperature and salinity resistant microspheres featuring “Rigid hydrophobic core- soft hydrophilic Shell” structure for deep reservoir profile control DOI
Wei Xiang, Lin Li,

Yunbo Dong

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161432 - 161432

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Dispersion Stability and Oil Displacement Effect of Modified Black Nanosheet DOI
Daoyi Zhu,

Junhui Qin,

Yanyan Gao

и другие.

Energy & Fuels, Год журнала: 2024, Номер 38(13), С. 11635 - 11643

Опубликована: Июнь 13, 2024

As an oil displacement system for reservoir in-depth conformance control, the black nanosheet (BN) can fully play role of reducing oil–water interfacial tension, emulsifying crude oil, and changing rock wettability. However, at present, dispersion stability BNs is poor, aggregation prone to occur, which leads sedimentation before pumping, affecting their injection performance. This study used a fine organic synthesis method prepare modified BN. The performance BN in low salinity water was analyzed by using multiple light stabilizer zeta potential analyzer. A device employed conduct experiments on after modification compare effects. Results showed that with good be prepared from BNs, cetyltrimethylammonium bromide, urea. Transmission electron microscopy testing had powder flake structure 70 × 400 nm, indicated application low-permeability recovery. introduced cationic hydrophilic groups alkyl long chains, increasing absolute 11.10 13.50 mV. thermal index value measured scattering confirmed significant improvement its microscopic perspective. Compared unmodified significantly increase recovery degree, 12.51 percentage points. developed this work high effect, could provide new chemical efficient development reservoirs.

Язык: Английский

Процитировано

2
Development of Anionic-Modified Black Nanosheet and Its Oil Imbibition Performance in Ultralow-Permeability Reservoirs DOI
Daoyi Zhu,

Yanyan Gao,

Ling Bai

и другие.

Energy & Fuels, Год журнала: 2024, Номер 38(15), С. 14149 - 14157

Опубликована: Июль 22, 2024

Язык: Английский

Процитировано

2
Application of CO2-Soluble Polymer-Based Blowing Agent to Improve Supercritical CO2 Replacement in Low-Permeability Fractured Reservoirs DOI Open Access
Mingxi Liu,

Kaoping Song,

Longxin Wang

и другие.

Polymers, Год журнала: 2024, Номер 16(15), С. 2191 - 2191

Опубликована: Авг. 1, 2024

Since reservoirs with permeability less than 10 mD are characterized by high injection difficulty, high-pressure drop loss, and low pore throat mobilization during the water drive process, CO2 is often used for development in actual production to reduce difficulty carbon emission simultaneously. However, microfractures usually developed low-permeability reservoirs, which further reduces of driving medium. At same time, this makes injected gas flow very fast, while utilization rate low, resulting a degree recovery. This paper conducted series studies on displacement effect CO2-soluble foaming systems fractured (the core matrix about 0.25 mD). For two blowing agents CG-1 CG-2, effects phase state, content, oil content static performance were first investigated; then, more effective agent was preferred replacement experiments according results; finally, sealing improving recovery fully open investigated at different rates concentrations, parameters optimized. The results show that still has good under volume various contents can be subsequent experiments. After selecting concentration, cores conditions 0.6 mL/min 2.80%. In conditions, achieve an 83.7% blocking improve extraction 12.02%. research provide data support application core.

Язык: Английский

Процитировано

1
Study on the Adaptability Evaluation of Micro-Dispersed-Gel-Strengthened-Alkali-Compound System and the Production Mechanism of Crude Oil DOI Open Access
Teng Wang, Tianjiang Wu, Yunlong Liu

и другие.

Processes, Год журнала: 2024, Номер 12(5), С. 871 - 871

Опубликована: Апрель 26, 2024

A novel micro-dispersed-gel (MDG)-strengthened-alkali-compound flooding system was proposed for enhanced oil recovery in high-water-cut mature oilfields. Micro-dispersed gel has different adaptability and application schemes with sodium carbonate hydroxide. The MDG-strengthened-alkali can reduce the interfacial tension to an ultra-low interfacial-tension level of 10−2 mN/m, which reverse wettability rock surface. After 30 days aging, MDG-strengthened-Na2CO3 good viscosity retention 74.5%, emulsion stability 79.13%. enhanced-oil-recovery ability (MDGSC) is 43.91%, slightly weaker than 47.78% MDG-strengthened-NaOH (MDGSH) system. crude-oil-production mechanism two systems different, but they all show excellent performance recovery. MDGSC mainly regulates seals micro-fractures, forcing subsequent injected water enter low-permeability area, it wash remaining micro-fractures. MDGSH removes on wall surface micro-fractures by efficient washing, MDG particles also form weak plugging be used as alternative enhance highly heterogeneous

Язык: Английский

Процитировано

0
Experimental study on EOR potential of P(AM/NVP) based gel in ultra-high temperature reservoirs DOI
Daijun Du,

Yu He,

Wanfen Pu

и другие.

Geoenergy Science and Engineering, Год журнала: 2024, Номер 242, С. 213282 - 213282

Опубликована: Сен. 3, 2024

Язык: Английский

Процитировано

0