Evaluation Indexes of Environmental Protection and a Novel System for Offshore Drilling Fluid

Jiang, Guancheng; Chen, M.; Li, Z. Y.; Mao, Hongzhi; Zhang, M.; Li, Y. Y.

doi:10.1080/10916466.2011.594833

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The methods to evaluate the concentration for 50% of maximal effect (EC 50 ), chemical oxygen demand (COD), and biochemical oxygen demand (BOD 5 ) for TTS are shown in the Table 2 below. 34…”

Section: Critical Micelle Concentration Measurementsmentioning

confidence: 99%

A Novel Environment-Friendly Natural Extract for Inhibiting Shale Hydration

et al. 2019

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This paper reports the first use of Tribulus terrestris extract (TTS), a newly developed nonionic surfactant, as an inhibitor for shale hydration. The critical micelle concentration of TTS was determined using the surface tension method, while its inhibition properties were evaluated with a variety of inhibition assessment methods. The sodium bentonite inhibition tests revealed that TTS can significantly inhibit clay pulping. The scanning electron microscopy images of unmodified and TTS-modified shale samples were observed and discussed. The hydrogen bonds between the hydrophilic tail of the TTS molecules and the available oxygen atoms on the clay silica surface led to the formation of a hydrophobic shell on the clay surface, which is considered as the main inhibition mechanism of TTS. The results from the contact angle experiments also validated this conclusion. In addition, the environmental aspects of TTS were measured in this paper. The experimental results suggest that TTS has a better inhibitor performance than either of the more conventional potassium chloride or polyamine and show that it has a good application prospect as an environment-friendly shale inhibitor.

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Section: Critical Micelle Concentration Measurementsmentioning

confidence: 99%

A Novel Environment-Friendly Natural Extract for Inhibiting Shale Hydration

et al. 2019

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“…Waste-drilling mud is produced inevitably and has a negative impact on marine ecological environment during offshore oil exploration and development, resulting in a serious damage to the marine environment and harming the people's health [93][94][95]. Thus, preventing pollution and minimizing environmental impact in a cost-effective way are the challenging tasks confronting the industry of drilling fluids nowadays [11].…”

Section: Environmental and Safety Aspectsmentioning

confidence: 99%

“…• Low chromaticity, nontoxicity, and little effect on marine environment [95] High-performance water-based drilling fluid…”

Section: Main Characteristics Referencesmentioning

confidence: 99%

Drilling Fluids for Deepwater Fields: An Overview

Alcázar-Vara¹,

Cortés-Monroy²

2018

Recent Insights in Petroleum Science and Engineering

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The increasing oil demand around the world along with the depletion of onshore and shallow water oil reserves have forced the oil companies moving into the development of deepwater subsea hydrocarbon reservoirs. Drilling fluids play a key role in all drilling operations, but they get a greater relevance in deepwater environments where the technological challenges of drilling at these extreme conditions generate significant operational risks as well as very high costs during the development of this kind of fields. The operational issues and concerns related to the drilling fluid design and application for deepwater fields are generally well known: narrow pore/fracture pressure gradient margins, wellbore stability, clay swelling, gas hydrates formation, formation damage, salt formations, lost circulation, stuck pipe, cuttings transport and environmental and safety aspects. Therefore, the present chapter aims to give an overview on the main challenges and research related to drilling fluid design and application for deepwater fields through the revision of the state of the art of the current and innovative technological solutions reported in literature.

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The Study of Optimization of Flocculation and Destabilization Technology of Waste PEM Drilling Fluid in Bohai Oilfield

et al. 2021

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In light of the difficulty of solid-liquid separation of waste PEM drilling fluid in the Bohai oilfield, constructing an inorganic-organic flocculation system is proposed and the processing method of destabilization technology is optimized. The biggest influence factor on the flocculation process of PEM drilling fluid was determined by designing an orthogonal test. The flocculation mechanism was researched through single factor optimization, combined with zeta potential and particle size distribution test. The results showed that the most significant factors affecting the flocculation of waste PEM drilling fluid were the dosage of inorganic flocculant CaCl2 and flocculation pH value. When the dosage of inorganic flocculant CaCl2 was 1.2% (w/v), the dosage of organic flocculant SDYJ-2 was 0.05%, the flocculation pH value was 3, and the flocculation time was 5 min, the flocculation technology reached the optimization and then the liquid yield can reach 70.96%. The mechanism of flocculation and destabilization was as follows: the inorganic flocculant of CaCl2 mainly reduced the zeta potential of clay particles through electric neutralization. 1% CaCl2 could reduce the potential mean value of drilling fluid system from -38.1 mV to -32.5 mV, and then decrease the repulsion among suspensions. Through bridging curling and electric neutralization, the organic flocculant of SDYJ-2 can absorb and wrap the clay particles after flocculation destabilization to form a network spatial structure, which made clay particles aggregate into large flocs and particles. D50 can increase by 21.5 times, when the concentration of SDYJ-2 was 0.15%.

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Evaluation Indexes of Environmental Protection and a Novel System for Offshore Drilling Fluid

Cited by 3 publications

References 13 publications

A Novel Environment-Friendly Natural Extract for Inhibiting Shale Hydration

A Novel Environment-Friendly Natural Extract for Inhibiting Shale Hydration

Drilling Fluids for Deepwater Fields: An Overview

The Study of Optimization of Flocculation and Destabilization Technology of Waste PEM Drilling Fluid in Bohai Oilfield

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