Conceptual design and methodology for rheological control of water-based drilling fluids in ultra-high temperature and ultra-high pressure drilling applications

Mao, Hui; Yan, Yang; Zhang, Hao; Zheng, Jie; Zhong, Ying

doi:10.1016/j.petrol.2019.106884

Cited by 40 publications

(29 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many materials were used as weighting agents over the years, and researchers are still looking for new materials and ways to improve the existing ones. Examples of common weighting materials include barite, calcium carbonate, ilmenite, hematite, manganese tetroxide (Micromax), galena, stibnite, and potash. − One potential method to improve the weighting material performance is by reducing its particle size; this introduced more options such as micronized barite, micronized ilmenite, and micronized manganese tetroxide as weighting materials. − Furthermore, other researchers used a mixture of several weighting materials with the aim of mitigating drilling instability issues such as barite sagging and of improving the drilling mud properties. , Also, nanoparticles were investigated as weighting agents by several studies that showed a general improvement in the drilling fluid properties. ,− Accordingly, selecting the right weighting material is not a trivial task and it depends on many factors including the cost, the required properties (i.e., density), and its solubility in conventional filter cake removal treatments since it affects approximately 70–80% of the filter cake structure …”

Section: Introductionmentioning

confidence: 99%

The Role of Drilled Formation in Filter Cake Properties Utilizing Different Weighting Materials

et al. 2021

View full text Add to dashboard Cite

The filter cake formed during a filtration process plays a vital role in the success of a drilling operation. There are several factors affecting the filter cake build-up such as drilled formation, drilling fluid properties, and well pressure and temperature. The collective impact of these two factors (i.e., formation and the drilling fluid) on the filter cake build-up needs to be fully investigated. In this study, two types of formations represented as limestone and sandstone were used with different weighting materials to assess and compare their impact on the filter cake properties, filtration behavior, and solid invasion. The used weighting materials are manganese tetroxide, ilmenite, barite, and hematite. The filter cake was formed under a temperature of 200 °F and differential pressure of 300 psi. Nuclear magnetic resonance spectroscopy was employed to explore the pore structure of the used core samples. The results showed that the properties (i.e., shape and dimensions) of the different weighting materials are the dominant factors compared to the formation characteristics in most of the investigated filter cake properties. Nevertheless, the formation properties, namely, the permeability and pore structure, have a somehow higher contribution when it comes to the filter cake porosity and thickness. For solid invasion, there were no clear results about the main factor contributing to this issue.

show abstract

Section: Introductionmentioning

confidence: 99%

The Role of Drilled Formation in Filter Cake Properties Utilizing Different Weighting Materials

et al. 2021

View full text Add to dashboard Cite

show abstract

“…This will lead to a rapid increase in the demand for the development of deep and ultra-deep wells drilling technology, especially of drilling fluid technology. [3][4][5] In the petroleum industry, ultra-deep wells refer to wells with a depth greater than 6000 m, where extremely complicated formations are often encountered during drilling operations, such as ultra-high temperature (205-260 C), high pressure (>69 MPa), and salt-gypsum section, which can pose great challenges to the high-temperature-resistance, salinity-tolerance, and solids loading capacity of the drilling fluid technology. [6][7][8] As a multi-functional fluid, drilling fluid serves a significant role in ensuring the safety and efficiency of drilling operations.…”

Section: Introductionmentioning

confidence: 99%

NovelN,N‐dimethylacrylamidecopolymer containing multiple rigid comonomers as a filtrate reducer inwater‐baseddrilling fluids and mechanism study

Wang

Jiang

Yang

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Ultra‐high temperature dramatically deteriorates rheological properties and filtration performance of water‐based drilling fluids (WBDFs), especially for a salt‐gypsum formation that greatly restricts the application of WBDFs in ultra‐deep well drilling operations. Hence, the research in this article used an anionic copolymer (DANS) prepared by N, N‐dimethylacrylamide, 2‐acrylamide‐2‐methylpropanesulfonic acid, N‐vinylpyrrolidone, and sodium 4‐styrenesulfonate as an anti‐ultra‐high temperature and anti‐salt contamination filtrate reducer. Due to its multiple bulky cyclic structures in the side chain, DANS exhibits excellent thermal stability in the thermal gravimetric, rheological, and filtration tests. By adding 1.0 wt% DANS, the American Petroleum Institute (API) filtration volume of sodium bentonite‐based fluids (SBT‐BFs) decreased from 56.0 to 9.2 ml after aging at 240°C. Even under both 20 wt% NaCl contamination and 240°C aging, SBT‐BFs with 2.0 wt% DANS could maintain a filtration volume of 9.4 ml, whereas SBT‐BFs without DANS reached a filtration volume of 203.0 ml. The possible filtration control mechanism of DANS was further investigated via the Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), ζ potential, particle size distribution, filter cake micro‐morphology, and transmission electron microscopy (TEM). Confirmed by FTIR and AFM results, the effective adsorption was formed between DANS and bentonite even under a high‐salinity environment. Thus, a firm “dot net” structure formed by bentonite/DANS was observed by TEM, significantly improving the colloidal stability, dispersibility, and filter cake compactness of SBT‐BFs. Finally, by utilizing DANS as the core treatment agent, a high‐density WBDFs system with a temperature resistance of 240°C and a salt‐tolerance of 20 wt% has been successfully prepared.

show abstract

“…Secondly, the current vibration sensors cannot be applied to the higher temperature environment in downhole. As we all known, there is abnormally high temperature inside the earth due to geological movement and other reasons, 17 so the temperature from the surface to the deeper of the earth will gradually increase during drilling. That is to say, the vibration sensor can work normally because the downhole temperature is low when the drilling depth is shallow, while it cannot be used because the higher temperature exceeded 175 degrees Celsius when the drilling depth is deep.…”

Section: Introductionmentioning

confidence: 99%

Research on the self-powered downhole vibration sensor based on triboelectric nanogenerator

Huang

Yang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Drill string vibration during the drilling must be measured in real-time as it will cause damage to the construction. This paper proposed a self-powered downhole vibration sensor based on the triboelectric nanogenerator. The downhole vibration sensor relies on the drill string vibration to induce triboelectric charge and electrostatic induction of nanomaterials, thereby realizing self-powered vibration measurement. Sensing performance test results show that the measurement range is between 0 to 5 Hz, the measurement error does not exceed 3.5%, and the output voltage amplitude with a range of 2 V to 5.5 V decreases with the increases of vibration frequency. Self-powered performance test results show that the output current can reach a maximum value of about 35 × E−8 A when a 50 ohm resistance is connected in series, the output power can reach a maximum value of about 924.5 × E−12 W when a 20k ohm resistance is connected in series at a vibration frequency of 0.8 Hz, and the output current and power all decrease with the increase of the vibration frequency.

show abstract

Conceptual design and methodology for rheological control of water-based drilling fluids in ultra-high temperature and ultra-high pressure drilling applications

Cited by 40 publications

References 46 publications

The Role of Drilled Formation in Filter Cake Properties Utilizing Different Weighting Materials

The Role of Drilled Formation in Filter Cake Properties Utilizing Different Weighting Materials

NovelN,N‐dimethylacrylamidecopolymer containing multiple rigid comonomers as a filtrate reducer inwater‐baseddrilling fluids and mechanism study

Research on the self-powered downhole vibration sensor based on triboelectric nanogenerator

Contact Info

Product

Resources

About