The Experimental Study on a New Type Low Temperature Water- based Composite Alcohol Drilling Fluid

Abstract High-temperature water-based drilling fluid systems hold several advantages over synthetic based systems from financial and environmental viewpoints. However, most conventional water-based systems start to become unstable at temperatures above 300 degF. This paper details the design and implementation of A Novel Water-Based Drilling Fluid that meet these temperature stability requirements. The newly developed high-temperature water-based system discussed in this paper utilizes a custom-made branched synthetic polymer that exhibits superior rheological properties and fluid loss control as well as long term stability above 400 degF. The branched synthetic polymer is compatible with most oilfield brines and maintains excellent low-end rheology necessary for hole cleaning and solids suspension under high-temperatures and pressures. Under static conditions, the high-temperature fluid shows no gelation resulting in lower swab surge pressures while the stability of the highly branched synthetic polymer and enhanced rheological profile minimize sag. To drill a challenging exploration well, a Middle East client required a cost-effective drilling fluid system which remains stable under static temperatures expected to exceed 375 degF. The long-term stability of the system was critical for successful wireline logging operations. In addition, the system was required to provide shale inhibition, hydrogen sulfide suppression and sufficient density (above 16.5 lbm/galUS) to maintain well integrity while drilling through anticipated high-pressure zones. The challenging intermediate (12.25-in and 8.375-in) and reservoir (6-in) sections were successfully drilled and evaluated using this new branched synthetic polymer-based system. Fluid property trends and system treatments will be detailed alongside thermal stability data for extended periods required for wireline logging (up to 9 days static). This paper will discuss how proper laboratory design of the high-temperature water-based system was translated to excellent field performance and will indicate how this technology can be utilized for future campaigns in the region and worldwide.

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Experimental study on water-based drilling fluid for horizontal wells

Energy Sources Part A Recovery Utilization and Environmental Effects ◽

10.1080/15567036.2020.1803456 ◽

2020 ◽

pp. 1-20 ◽

Cited By ~ 1

Author(s):

Zhaohui Wei ◽

Yichao He ◽

Sui Gu ◽

Yanping Shi ◽

Xianyu Yang ◽

...

Keyword(s):

Experimental Study ◽

Drilling Fluid ◽

Horizontal Wells ◽

Water Based

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Research and Development of a New Type of Water-Based Drilling Fluid

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.486.464 ◽

2012 ◽

Vol 486 ◽

pp. 464-471

Author(s):

Kai He Lv ◽

Tao Shi ◽

Xue Dong Wu

Keyword(s):

Drilling Fluid ◽

Solid Content ◽

Functional Treatment ◽

Soluble Salts ◽

Fluid System ◽

Water Based ◽

Treatment Agent ◽

New Type ◽

Repeated Use ◽

Filtration Properties

To solve the problems of conventional water-based drilling fluid, a new type of water-based drilling fluid system that comprises of water, multi-functional treatment agent and soluble salts is developed. Multi-functional treatment agent provides the necessary properties and soluble salt maintains the required density. The composition of the drilling fluid is simple and it is easy to maintain. This new drilling fluid has the advantages of good rheology and filtration properties, strong plugging and inhibiting abilities, low solid content, pollution-free, wide adaptability, easy preparation and repeated use. It is a new type of drilling fluid system.

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Experimental study of water-based drilling fluid disturbance on natural gas hydrate-bearing sediments

Journal of Natural Gas Science and Engineering ◽

10.1016/j.jngse.2017.08.029 ◽

2017 ◽

Vol 47 ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Huaiwen Zhang ◽

Yuanfang Cheng ◽

Jihui Shi ◽

Lingdong Li ◽

Menglai Li ◽

...

Keyword(s):

Experimental Study ◽

Natural Gas ◽

Gas Hydrate ◽

Drilling Fluid ◽

Natural Gas Hydrate ◽

Water Based ◽

Hydrate Bearing Sediments

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Environmental considerations of low-temperature drilling fluids

Annals of Glaciology ◽

10.3189/2014aog65a226 ◽

2014 ◽

Vol 55 (65) ◽

pp. 31-40 ◽

Cited By ~ 16

Author(s):

Pavel Talalay ◽

Zhengyi Hu ◽

Huiwen Xu ◽

Dahui Yu ◽

Lili Han ◽

...

Keyword(s):

Low Temperature ◽

Occupational Safety ◽

Drilling Fluid ◽

Hazardous Substances ◽

Chemical Pollution ◽

Drilling Fluids ◽

Biological Contamination ◽

Subglacial Environment ◽

Safety And Health ◽

New Type

AbstractThe introduction of low-temperature fluid into boreholes drilled in ice sheets helps to remove drilling cuttings and to prevent borehole closure through visco-plastic deformation. Only special fluids, or mixtures of fluids, can satisfy the very strict criteria for deep drilling in cold ice. The effects of drilling fluid on the natural environment are analyzed from the following points of view: (1) occupational safety and health; (2) ozone depletion and global warming; (3) chemical pollution; and (4) biological pollution. Traditional low-temperature drilling fluids (kerosene-based fluids with density additives, ethanol and n-butyl acetate) cannot be qualified as intelligent choices from the safety, environmental and technological standpoints. This paper introduces a new type of low-temperature drilling fluid composed of synthetic ESTISOLTM esters, which are non-hazardous substances. ESTISOLTM 140 mixtures with ESTISOLTM 165 or ESTISOLTM F2887 have an acceptable density and viscosity at low temperature. To avoid the potential for biological contamination of the subglacial environment, the borehole drilling fluid should be treated carefully on the surface.

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Water based synthesis of highly conductive GaxLi7−3xLa3Hf2O12 garnets with comparable critical current density to analogous GaxLi7−3xLa3Zr2O12 systems

Dalton Transactions ◽

10.1039/d0dt03774e ◽

2021 ◽

Author(s):

M. P. Stockham ◽

B. Dong ◽

M. S. James ◽

Y. Li ◽

Y. Ding ◽

...

Keyword(s):

Low Temperature ◽

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Cycling Stability ◽

High Critical Current Density ◽

Water Based ◽

Temperature Water

We report a low temperature, water-based synthesis of Ga0.2Li6.4La3Hf2O12 with high critical current density, cycling stability and no Al3+/Li+ exchange.

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