Results 11 to 20 of about 6,785 (266)

Systematic experimental study of the temperature dependence of viscosity and rheological behavior of water-based drilling fluids with nano-additives

Petroleum, 2023
The paper presents the results of a systematic study of the influence of nano-additives of various concentrations, average sizes and composition on the temperature dependence of the viscosity and rheological behavior of water-based drilling fluids ...
A.V. Minakov, M.I. Pryazhnikov, E.I. Mikhienkova, Y.O. Voronenkova   +3 more
doaj   +1 more source

Mechanical properties and damage constitutive model of mud shale under different drilling fluids immersion

Meitan kexue jishu, 2023
In the process of shale oil and gas drilling, the long-term erosion and weakening of drilling fluids promotes the extension and expansion of micro-fractures on mud shale, which leads to the reduction of rock mass strength and seriously threatens the ...
Diandong GENG, Xianyin QI, Peng FU, Shengwei WANG, Ting KE   +4 more
doaj   +1 more source

Research of the pulsating flow of drilling fluid in the drill string

Technology audit and production reserves, 2022
The object of research is the pulsating flow of drilling fluid in the drill string. One of the most problematic places is pressure loss due to friction forces distributed along the length of the flow and concentrated in its nodes (threaded joints and pipe bends).
Viktor Svitlytskyi, Irina Boshkova
openaire   +2 more sources

Experimental investigation of new additive to optimize the properties of synthetic-based drilling fluid [PDF]

Journal of Mining and Metallurgy. Section A: Mining, 2016
This paper focus on the design, development and testing two type of synthetic based drilling fluid include of amine-treated Quebracho agent and Polymeric Fluid Loss agent.
Daya Ali Akbar, Sajjadian Majid, Esmaeilpour Motlagh Ehsan   +2 more
doaj   +1 more source

Damage Mechanism of Oil-Based Drilling Fluid Flow in Seepage Channels for Fractured Tight Sandstone Gas Reservoirs

Geofluids, 2019
Oil-based drilling fluids (OBDFs) have a strong wellbore stabilization effect, but little attention has been paid to the formation damage caused by oil-based drilling fluids based on traditional knowledge, which is a problem that must be solved prior to ...
Peng Xu, Mingbiao Xu
doaj   +1 more source

Applicability of Fe3O4 nanoparticles for improving rheological and filtration properties of bentonite-water drilling fluids in the presence of sodium, calcium, and magnesium chlorides

Journal of Petroleum Exploration and Production Technology, 2020
There are impressive efforts in conjunction with improving rheological and filtration properties of Water-Based Drilling Fluids (WBDFs) employing Nano-Particles (NPs).
Alireza Rezaei, Vahid Nooripoor, Khalil Shahbazi   +2 more
doaj   +1 more source

The Application of an Oil-Based Drilling Fluid with Strong Plugging Capacity in Pilot Test Shale Oil Wells in Qibei Area

Zuanjingye yu wanjingye
The proved undeveloped shale oil reserves in block Qibei of Dagang oilfield are still very high and their burial depths can be 4,500 m or deeper. This oil and gas enrichment area is located in the Shahejie reservoir which has high content of clays as ...
Hong MA, Tao ZHUANG, Fei WEN, Leilei WANG, Xiaochen LI, Anliang CHEN, Yu WANG   +6 more
doaj   +1 more source

A Novel Thermo-Thickening Oil-Based Drilling Fluid Based on Composite Thickener Under High Temperature and Pressure

Energies
Under high-temperature conditions in deep well formations, oil-based drilling fluids tend to show degraded rheological properties and reduced suspension capacity, which may impair wellbore cleanliness and circulation pump pressure and hinder drilling. To
Weijie Chen, Xiaoming Tang, Leilei Wang, Hong Ma, Anliang Chen, Jian Zhang, Weian Huang, Guanzheng Zhuang, Hanyi Zhong, Xianbin Zhang   +9 more
doaj   +1 more source

Rapid RAFT Polymerization of Acrylamide with High Conversion

Molecules, 2023
Rapid RAFT polymerization can significantly improve production efficiency of PAM with designed molecular structure. This study shows that ideal Reversible Addition–Fragmentation Chain Transfer (RAFT) polymerization of acrylamide is achieved in dimethyl ...
Xuejing Liu, Qiang Sun, Yan Zhang, Yujun Feng, Xin Su   +4 more
doaj   +1 more source

Prediction and Visualization of Channel Characteristics for Lost Circulation of Drilling Fluid in Fractured Formations

Geofluids
Accurate characterization of the feature parameters of lost circulation channels in fractured formations is of great significance for assessing lost circulation risk and designing effective leakage prevention and plugging strategies.
Jinjun Hu, Sijia Ma, Tie Geng, Wei Zhang, Anguo Xu, Xiaodong Liu, Shuai Zhang   +6 more
doaj   +1 more source