Results 21 to 30 of about 474,910 (304)

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

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

Environmental Impacts of Synthetic Based Drilling Fluids [PDF]

, 2000
Summary describing the work completed at Robert Ayers & Associates, Inc. for 'A Literature Review of Environmental Impacts of Synthetic Based Drilling Fluids.' It includes background information on the project funding and sponsorship, goals, methodology,
Robert Ayers & Associates, Inc.
core   +2 more sources

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

Preparation and Evaluation of a Novel Branched Polymer as Thickener for Calcium Chloride-Based Drilling and Completion Fluids

Molecules
Calcium halide-based fluids are often used in drilling and completion operations due to their high density, clay inhibition and low solid content. However, there is a lack of thickeners to promote gel strength, which improves the fluid’s capacity to ...
Xianbin Zhang, Zhongfeng Yang, Qian Wang, Weijie Chen, Tengjiao Liu, Tao Zhou, Shulin Li, Tongle Xin, Jie Cao, Xia Xin   +9 more
doaj   +1 more source