The Rheology and corrosivity of water-base drilling fluid under simulated downhole conditions

1996 ◽  
Vol 47 (6) ◽  
pp. 307-316 ◽  
Author(s):  
O. S. Shokoya ◽  
M. A. Al-Marhoun ◽  
O. A. Ashiru
Keyword(s):  
Drilling Fluid ◽  
Water Base

A Water-Base Drilling Fluid for Controlling Deep-Reservoir Extreme Conditions in an Abu Dhabi Gas Shale Play

2021 ◽  
Author(s):  
Gabe Manescu ◽  
Balazs Veer ◽  
Panamarathupalayam Balakrishnan ◽  
Carmelo Arena ◽  
Benoit Allias ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Abu Dhabi ◽  
Extreme Conditions ◽  
Gas Shale ◽  
Deep Reservoir ◽  
Water Base

Rheologically Stable, Nontoxic, High-Temperature Water-Base Drilling Fluid

1997 ◽  
Vol 12 (03) ◽  
pp. 158-162 ◽  
Author(s):  
Julianne Elward-Berry ◽  
J.B. Darby
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
High Temperature Water ◽  
Water Base ◽  
Temperature Water

scholarly journals Removing all Forms of Soluble Sulphides From Drilling Fluid

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hassan A. Alwan
Keyword(s):  
Drilling Fluid ◽  
Total Concentration ◽  
High Rate ◽  
Ferrous Oxalate ◽  
Results Of Treatment ◽  
Drilling Equipment ◽  
Magnetite Fe3o4 ◽  
Iron Sulphides ◽  
Soluble Species ◽  
Water Base

The aim of this project is to remove or eliminate the effect of the highly toxic gas of H2S on the health of personal, environment, drilling fluid reology, and drilling equipment materials by adding an economic mixture of sulphide scavengers to the contaminated drilling fluid. In this research mixture of 14.7 gm/l of iron oxide in the form of magnetite (Fe3O4) and 14.7 gm/l of ferrous oxalate Fe(C2O4), which cost is 1.3 US$ per 1kg of mixture, was used to remove the all forms of soluble sulphides (H2S, HS-, S2-) from water-base drilling fluid. The Fe3O4 reacts with dissolved H2S and the reaction carry on fast at pH below 8, while Fe(C2O4) reacts with HS-, S2- and this reaction proceed at high rate at pH above 8. Both reactions produce insoluble iron sulphides. The chemical analysis showed that the soluble species of sulphides in the drilling fluid, which its pH was 7.9, were present as dissolved H2S gas and as bisulphide ions (HS-). The analysis also explained that the total concentration of these sulphides in the drilling fluid was 3000 ppm. The results of treatment of contaminated fluid showed that all forms of sulphides were removed from drilling fluid after adding the mixture of scavengers to the contaminated fluid. The results also explained that the drilling fluid reology recovered after removing the soluble sulphides, which were the main factors that effect on the drilling fluid reology, from the drilling fluid.

scholarly journals Improving the Performance of Drilling Fluid Using Lignite Nano Particles

2019 ◽  
Vol 26 (1) ◽  
pp. 100-105
Author(s):  
Ghufran Falih ◽  
Nada S. Al-Zubaidi ◽  
Asawer A. Al-Wasiti
Keyword(s):  
High Temperature ◽  
Salt Water ◽  
Drilling Fluid ◽  
Nano Particles ◽  
Drilling Fluids ◽  
Mud Cake ◽  
Different Temperatures ◽  
Good Filtration ◽  
Water Base ◽  
Nanoparticle Additives

The effect of lignite on the filtration characteristics of water base mud was studied at low and high temperature. Recently, the nanoparticle additives are studied and investigated as alternative additives due to its stability during drilling even at high-temperature and high-pressure (HTHP) conditions. In this study the effect of nano particles size of Lignite on filtrate volume and mud cake thickness was investigated , at different weights (0.01, 0.05, 0.07, 0.1, and 0.2) gm, in (API WBM, Polymer mud, DURA THERM mud, and Saturated Salt Water mud) and different temperatures (35, 75, and 100) oC. The results show that most tests provided a very good filtration control for the used drilling fluids at 100 oC. Better performances were observed in polymer and Saturated Salt Water mud at 100 oC with Lignite concentration of 0.01 gm and 0.1 gm, and filtrate volume reduction 52.5 % and 60 % respectively.

scholarly journals Synthesis of a Novel Filtrate Reducer and Its Application in Water-Based Drilling Fluid for Ultra-High-Temperature Reservoirs

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Dongyu Qiao ◽  
Zhongbin Ye ◽  
Lei Tang ◽  
Yiping Zheng ◽  
Xindong Wang ◽  
...  
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Adsorption Capacity ◽  
Fresh Water ◽  
Drilling Fluid ◽  
Salt Resistance ◽  
Fluid Loss ◽  
Drilling Fluids ◽  
Water Based ◽  
Water Base

The high-temperature stability and filtration property controlling of ultra-high-temperature water-based drilling fluids is a worldwide problem. To resolve this problem, a high-temperature-resistant quaternary copolymer (HTRTP) was synthesized based on molecular structure optimization design and monomer optimization. The physical and chemical properties were characterized by infrared spectroscopy, thermal weight, and spectrophotometry, and their temperature and salt resistance was evaluated in different drilling fluids, combined with adsorption, particle size analysis, and stability test. The results show that the thermal stability of HTRTP is very strong, and the initial temperature of thermal decomposition is above 320°C. The salt resistance of HTRTP is more than 162 g/L, and the calcium resistance is more than 5000 mg/L, which is equivalent to the foreign temperature-resistant polymer DCL-a, and is superior to the domestic metal ion viscosity increasing fluid loss agent PMHA-II for drilling fluids. It has excellent high-temperature resistance (245°C) and fluid loss reduction effect in fresh water base mud, fresh water weighted base mud, saturated brine base mud, and composite salt water base mud, which is better than foreign DCL-a (245°C) and domestic PMHA (220°C). The adsorption capacity of HTRTP on clay particles is large and firm, and the adsorption capacity changes little under the change of chemical environment and temperature. Both before and after HTRTP aging (245°C/16 h), the permeability of filter cake can be significantly reduced and its compressibility can be improved. By optimizing the particle size gradation of the drilling fluid and enhancing the colloid stability of the system, HTRTP can improve the filtration building capacity of the drilling fluid and reduce the filtration volume. The development of antithermal polymer provides a key treatment agent for the study of anti-high-temperature-resistant saline-based drilling fluid.

Application of Water-base Semipermeable Membrane Drilling Fluid Technology in Sebei Natural Gas Field

2012 ◽  
Author(s):  
Jinxing Wu ◽  
Xiucun Li ◽  
Youcheng Liu ◽  
Zuoqi Fan ◽  
Dengzhi Dai ◽  
...  
Keyword(s):  
Natural Gas ◽  
Drilling Fluid ◽  
Semipermeable Membrane ◽  
Gas Field ◽  
Water Base
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