Evaluation on steel corrosion in water-based drilling fluids: Inhibitors and scale involvement

An important aspect of hydrocarbon drilling is the usage of drilling fluids, which remove drill cuttings and stabilize the wellbore to provide better filtration. To stabilize these properties, several additives are used in drilling fluids that provide satisfactory rheological and filtration properties. However, commonly used additives are environmentally hazardous; when drilling fluids are disposed after drilling operations, they are discarded with the drill cuttings and additives into water sources and causes unwanted pollution. Therefore, these additives should be substituted with additives that are environmental friendly and provide superior performance. In this regard, biodegradable additives are required for future research. This review investigates the role of various bio-wastes as potential additives to be used in water-based drilling fluids. Furthermore, utilization of these waste-derived nanomaterials is summarized for rheology and lubricity tests. Finally, sufficient rheological and filtration examinations were carried out on water-based drilling fluids to evaluate the effect of wastes as additives on the performance of drilling fluids.

Download Full-text

Application of Hybrid Silicate as a Film-Forming Agent in High-Temperature Water-Based Drilling Fluids

ACS Omega ◽

10.1021/acsomega.1c02725 ◽

2021 ◽

Author(s):

Ying Li ◽

Maosen Wang ◽

Xianfeng Tan ◽

Yinghui An ◽

Huanan Liu ◽

...

Keyword(s):

High Temperature ◽

Drilling Fluids ◽

High Temperature Water ◽

Film Forming ◽

Water Based ◽

Hybrid Silicate ◽

Temperature Water

Download Full-text

Wet Drilled Cuttings Bed Rheology

Energies ◽

10.3390/en14061644 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1644

Author(s):

Camilo Pedrosa ◽

Arild Saasen ◽

Bjørnar Lund ◽

Jan David Ytrehus

Keyword(s):

Drilling Fluid ◽

Drilling Fluids ◽

Parallel Plates ◽

Single Particles ◽

Cuttings Transport ◽

Transport Studies ◽

Water Based ◽

Fluid Properties ◽

External Forces ◽

Cuttings Bed

The cuttings transport efficiency of various drilling fluids has been studied in several approaches. This is an important aspect, since hole cleaning is often a bottleneck in well construction. The studies so far have targeted the drilling fluid cuttings’ transport capability through experiments, simulations or field data. Observed differences in the efficiency due to changes in the drilling fluid properties and compositions have been reported but not always fully understood. In this study, the cuttings bed, wetted with a single drilling fluid, was evaluated. The experiments were performed with parallel plates in an Anton Paar Physica 301 rheometer. The results showed systematic differences in the internal friction behaviors between tests of beds with oil-based and beds with water-based fluids. The observations indicated that cutting beds wetted with a polymeric water-based fluid released clusters of particles when external forces overcame the bonding forces and the beds started to break up. Similarly, it was observed that an oil-based fluid wetted bed allowed particles to break free as single particles. These findings may explain the observed differences in previous cutting transport studies.

Download Full-text