Synthesis, characterization and evaluation of a quadripolymer with low molecular weight as a water based drilling fluid viscosity reducer at high temperature (245 °C)

2015 ◽  
Vol 64 (10) ◽  
pp. 1352-1360 ◽  
Author(s):  
Weian Huang ◽  
Cong Zhao ◽  
Zhengsong Qiu ◽  
Yee-Kwong Leong ◽  
Hanyi Zhong ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Drilling Fluid ◽  
Low Molecular Weight ◽  
Fluid Viscosity ◽  
Water Based ◽  
Viscosity Reducer

Low-Molecular-Weight Copolymer for Calcium Scale Inhibition at High Temperature

2009 ◽  
Author(s):  
Bisweswar Ghosh ◽  
B. Senthilmurugan
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Low Molecular Weight ◽  
Scale Inhibition

Rheology and fluid loss of a polyacrylamide-based micro-gel particles in a water-based drilling fluid

2020 ◽  
Vol 10 (5) ◽  
pp. 657-662
Author(s):  
Gang Wang ◽  
Honghai Fan ◽  
Guancheng Jiang ◽  
Wanjun Li ◽  
Yu Ye ◽  
...  
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Drilling Fluid ◽  
Crosslinking Agent ◽  
Fluid Loss ◽  
Temperature Property ◽  
Water Based ◽  
The Cross

In this paper, the cross-linked micro-gel polymer between acrylamide (AM) and N, N-Methylenebisacrylamide (MBA) was synthesized by dispersion polymerization. The initiator and crosslinking agent concentration were used to control the particle size of micro-gel polymer. The filtration property and mechanism of micro-gel were investigated comprehensively. The characteristics of micro-gel were checked by means of Fourier transform infrared spectroscopy, thermogravimetry, transmission electron microscopy, and particle size distribution, respectively. The results indicated that the cross-linked micro-gel polymer exhibited several outstanding merits, such as thermal stability (up to 200 °C), filtration control and rheological property. Microstructure analysis and particle size distribution examinations showed that the scale of micro-gel polymer was micro, which is in accord with design. Rheological tests demonstrated that the nonlinear structure of micro-gel polymer showed less impact on the apparent viscosity. The anti-high temperature property of micro-gel polymer was better than poly anioniccellulose (PAC) and asphalt widely applied in drilling fluid for anti-high temperature fluid-loss additive. As a result, the cross-linked micro-gel polymer had great potential to be applied in high temperature water-based mud.

Hydrophobic‐associated polymer‐based laponite nanolayered silicate composite as filtrate reducer for water‐based drilling fluid at high temperature

2019 ◽  
Vol 137 (18) ◽  
pp. 48608 ◽  
Author(s):  
Haokun Shen ◽  
Kaihe Lv ◽  
Xianbin Huang ◽  
Jingping Liu ◽  
Yingrui Bai ◽  
...  
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Water Based

scholarly journals The Distribution of Gases within the Combustion Coal of a Cigarette

1973 ◽  
Vol 7 (2) ◽  
Author(s):  
R.R. Baker ◽  
K.D. Kilburn
Keyword(s):  
Molecular Weight ◽  
Carbon Monoxide ◽  
High Temperature ◽  
Low Temperature ◽  
Temperature Region ◽  
Low Molecular Weight ◽  
Mainstream Smoke ◽  
Carbon Oxides ◽  
Sampling Probe ◽  
Combustion Region

AbstractMeasurements have been made of the distribution of temperature and low molecular weight gases within a burning cigarette, using a sampling probe coupled directly to a mass spectrometer (or Bosch carbon monoxide meter). The interior of the combustion coal is effectively an oxygen-deficient pyrolytic region. The oxides of carbon are produced in two distinct regions: a high-temperature (about 400-800°C) combustion region and a low- temperature (about 150-400°C) pyrolysis region. In the high-temperature coal the carbonised tobacco acts very much as a classical oxidizing solid fuel bed of carbon to give the two carbon oxides (and water). In the low-temperature region behind the coaI tobacco decomposes to give a substantiaI proportion of the carbon oxides and a major proportion of the hydrocarbons found in mainstream smoke.

Effect of aluminum hydroxide on low-molecular-weight siloxane distribution and microstructure of high-temperature vulcanized silicone rubber

2017 ◽  
Vol 135 (6) ◽  
pp. 45803 ◽  
Author(s):  
Zheng Wang ◽  
Chongshan Yin ◽  
Yi Luo ◽  
Long Chen ◽  
Yuming Zhou ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Aluminum Hydroxide ◽  
Silicone Rubber ◽  
Low Molecular Weight

Bentonite-Free Water-Based Drilling Fluid with High-Temperature Tolerance for Protecting Deep Reservoirs

2016 ◽  
Vol 51 (6) ◽  
pp. 652-662 ◽  
Author(s):  
Weian Huang ◽  
Binqiang Xie ◽  
Zhengsong Qiu ◽  
Lin Jiang
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Free Water ◽  
Temperature Tolerance ◽  
High Temperature Tolerance ◽  
Water Based

scholarly journals Low-molecular-weight, fatty-acid esters as potential low-temperature drilling fluids for ice coring

2014 ◽  
Vol 55 (68) ◽  
pp. 39-43 ◽  
Author(s):  
Huiwen Xu ◽  
Lili Han ◽  
Pinlu Cao ◽  
Mingyi Guo ◽  
Junjie Han ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Fatty Acid ◽  
Butyl Acetate ◽  
Drilling Fluid ◽  
High Viscosity ◽  
Fatty Acid Esters ◽  
Low Molecular Weight ◽  
Drilling Fluids ◽  
Cold Environments ◽  
Acid Esters

AbstractA challenge for future deep-ice coring in central Antarctica is to identify an appropriate inert drilling fluid with no undesirable physical or chemical characteristics. The drilling fluids currently in use (kerosene-based fluids with density-increasing additives, ethanol and n-butyl acetate) are not intelligent choices for the future from safety, environmental and some technological standpoints. Recently proposed drilling fluids based upon ESTISOL™ have high viscosity at low temperatures, which severely limits their application in cold environments. This paper presents our research into the application of low-molecular-weight, fatty-acid esters (FAEs), substances commonly used in the fragrance and flavoring industries. According to available data, selected FAEs are not hazardous to human health. Considering density requirements alone, ethyl butyrate and n-propyl propionate best meet our present needs. The viscosities of these two chemicals are also the lowest among studied FAEs, not exceeding 4 mPas at temperatures down to −60°C. Both compounds are highly volatile, and insoluble in water. Such properties are attractive, but the applicability of FAEs to deep, cold, ice drilling can be evaluated only after field-based, practical experiments in test boreholes.

scholarly journals Effect of Cycloaliphatic Amine on the Shale Inhibitive Properties of Water-Based Drilling Fluid

2015 ◽  
Vol 8 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Hanyi Zhong ◽  
Dong Sun ◽  
Weian Huang ◽  
Yunfeng Liu ◽  
Zhengsong Qiu
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Hardness Test ◽  
Drilling Fluids ◽  
The Novel ◽  
Potential Measurement ◽  
Clay Particles ◽  
Water Based ◽  
Bulk Hardness ◽  
Dispersion Test

In order to improve the inhibitive properties and high temperature resistance of shale inhibitor, cycloaliphatic amines were introduced as shale hydration inhibitors in water-based drilling fluids. Bulk hardness test, shale cuttings dispersion test, bentonite inhibition test and water adsorption test were carried out to characterize the inhibitive properties of the novel amines. Surface tension measurement, zeta potential measurement, XRD, contact angle test, SEM and TGA were performed to investigate the interaction between the cycloaliphatic amines and clay particles. The results indicated that cycloaliphatic amines exhibited superior inhibitive properties to the state of the art inhibitors. Moreover, the amines were high temperature resistant. The hydrophobic amine could intercalate into the clay gallery with monolayer orientation. The protonated ammonium ions neutralized the negatively charged surface. After adsorption, the hydrophobic segment covered the clay surface and provided a shell preventing the ingress of water.

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