Remediation of oil-based mud contaminated cement with talcum in shale gas well primary cementing: Mechanical properties, microstructure, and hydration

Huang, Sheng; Feng, Bo; Li, Zaoyuan; Tang, Shanjiang; Li, Jin; Su, Donghua; Qi, Ling

doi:10.1016/j.conbuildmat.2021.124047

Cited by 6 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oil well cement, a specialty cement, is commonly used to fill the annular space between production pipelines and formations, displace drilling fluids, restrict fluid movement between formations, and isolate productive and non-productive areas [46,47]. In the environment of downhole high temperature and high pressure and gaseous phase oil-water mixture, by increasing the lipophilicity and oil phase permeability of oil well cement [48], the bonding performance between the cementing structure and the oil production pipeline and the stability of the oil production process can be improved [49], and the occurrence of annular air channeling can be prevented. Therefore, an increasing number of scholars have begun to study the modification of oil well cement's oleophilic properties, and these research results can provide some reference for the improvement of oil-absorption properties of ordinary cement-based materials.…”

Section: Influence Of Organic Matter Modification On Oil Absorption O...mentioning

confidence: 99%

See 1 more Smart Citation

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

et al. 2023

View full text Add to dashboard Cite

With the wide application of petroleum resources, oil substances have polluted the environment in every link from crude oil extraction to utilization. Cement-based materials are the main materials in civil engineering, and the study of their adsorption capacity for oil pollutants can expand the scope of functional engineering applications of cement-based materials. Based on the research status of the oil-wet mechanism of different kinds of oil-absorbing materials, this paper lists the types of conventional oil-absorbing materials and introduces their application in cement-based materials while outlining the influence of different oil-absorbing materials on the oil-absorbing properties of cement-based composites. The analysis found that 10% Acronal S400F emulsion can reduce the water absorption rate of cement stone by 75% and enhance the oil-absorption rate by 62%. Adding 5% polyethylene glycol can increase the oil–water relative permeability of cement stone to 1.2. The oil-adsorption process is described by kinetic and thermodynamic equations. Two isotherm adsorption models and three adsorption kinetic models are explained, and oil-absorbing materials and adsorption models are matched. The effects of specific surface area, porosity, pore interface, material outer surface, oil-absorption strain, and pore network on the oil-absorption performance of materials are reviewed. It was found that the porosity has the greatest influence on the oil-absorbing performance. When the porosity of the oil-absorbing material increases from 72% to 91%, the oil absorption can increase to 236%. In this paper, by analyzing the research progress of factors affecting oil-absorption performance, ideas for multi-angle design of functional cement-based oil-absorbing materials can be obtained.

show abstract

Section: Influence Of Organic Matter Modification On Oil Absorption O...mentioning

confidence: 99%

“…The oil-absorption performance of modified cement is mainly affected by additives. If the number of micropores in the pore distribution of cement, the connectivity of pores, and the interface properties of cement pores are improved, the oil-absorption performance of cement can be improved [49].…”

Section: Modified Materialsmentioning

confidence: 99%

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

et al. 2023

View full text Add to dashboard Cite

show abstract

“…of CO 2 leakage. The sealing integrity of the cement-formation interface is susceptible to mud, [20,21] preflush, [22] spacer, [23] and residual filter cake. [24] During drilling operations, owing to the permeable formation action, only the liquid phase can penetrate the formation, leaving a layer of residue or solid particles in the borehole walls; this layer of residue or solid particles is called filter cake.…”

Section: Introductionmentioning

confidence: 99%

“…[ 1 ] Casing corrosion, [ 15 ] cement pore, [ 16 ] cement crack, [ 17 ] and cement–casing/cement–formation interface sealing failure [ 18,19 ] will be the possibility of CO 2 leakage. The sealing integrity of the cement–formation interface is susceptible to mud, [ 20,21 ] preflush, [ 22 ] spacer, [ 23 ] and residual filter cake. [ 24 ]…”

Section: Introductionmentioning

confidence: 99%

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects

Huang

et al. 2022

Energy Tech

Self Cite

View full text Add to dashboard Cite

Carbon capture and storage (CCS) technology has become one of the most cost‐effective and promising ways to achieve global climate change mitigation goals. The CO2 storage capacity in depleted oil and gas reservoirs is currently the safest and most economical option. The long‐term sealing of the cement–formation interface in CO2 storage wells (CSW) is essential to avoid CO2 leakage. The filter cake easily affects the interfacial sealing ability, which is a thin impermeable layer formed by drilling fluid residue or solid particles remaining on the borehole wall due to permeable formation. Filter cake removal is essential for favorable cementation and production efficiency. This study highlights the current developments and the main challenges for oil‐ and water‐based mud filter cake removal during the cementing and completion process. Moreover, research ideas and recommendations for various types of filter cake removal are proposed to provide a reference for future work. This information helps deepen understanding with respect to the different filter cake removal options available in the CCS industry and provides a knowledge base that can facilitate the improvement of the cementing quality and production efficiency of existing systems to combat battle CSW safety and production efficiency problems.

show abstract

“…However, it is also important to use wash flow conditions that do not cause fractures in the formation, which can occur when the pumped fluid at the bottom of the borehole becomes excessively high due to a high delivery rate. Sufficient contact time between the wash and the annular space is necessary, as this allows the mud to be effectively removed [5][6][7][8][9]. Cleaning the borehole prior to cementing is essential for many reasons [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Increasing the Efficiency of Sealing the Borehole in Terms of Spacer Pumping Time

2021

View full text Add to dashboard Cite

The tightness of a borehole is essential for its long-term durability. For this purpose, the column of the pipe is sealed with cement slurry. After contacting the slurry, mud in the borehole is removed. However, the slurry does not effectively remove the remaining drilling mud. Therefore, the annular space is cleaned with a wash. Effectively cleaning the borehole presents quite a problem, as many variables that affect the stability of the borehole need to be considered. The time of contact between the borehole and the wash is very important. On the one hand, insufficient contact time does not guarantee proper removal of the mud. On the other hand, a long contact time may destroy the wall of the borehole. To address these problems, studies were carried out to assess the effect of the wash contact time on annular space cleaning. When determining the time of washing, a compromise between effective cleaning and the stability of the borehole wall is required. In the research presented in this publication, the simplest wash was used, i.e., water. This choice was based on the objective of observing the influence of the wash time on cleaning, i.e., the preparation of the borehole for cementing. By using water, the physicochemical action of surfactants can be ignored. In order to capture changes in cleaning due to differences in contact time, a control test was performed using a pure sandstone core without mud. The effect of the wash contact time on the cleaning of the annular space was investigated by determining the adhesion of the cement sheath to the rock core. First, mud was formed on the core, and then it was removed. By comparing the obtained adhesion to the reference sample, the effectiveness of the deposit removal was determined. On the basis of this research, the optimal wash contact time was determined.

show abstract

Remediation of oil-based mud contaminated cement with talcum in shale gas well primary cementing: Mechanical properties, microstructure, and hydration

Cited by 6 publications

References 37 publications

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects

Increasing the Efficiency of Sealing the Borehole in Terms of Spacer Pumping Time

Contact Info

Product

Resources

About

Remediation of oil-based mud contaminated cement with talcum in shale gas well primary cementing: Mechanical properties, microstructure, and hydration

Cited by 6 publications

References 37 publications

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

Research Progress on Factors Affecting Oil-Absorption Performance of Cement-Based Materials

Filter Cake Removal during the Cementing and Completion Stages in CO2 Storage Wells: Current Developments, Challenges, and Prospects

Increasing the Efficiency of Sealing the Borehole in Terms of Spacer Pumping Time

Contact Info

Product

Resources

About

Filter Cake Removal during the Cementing and Completion Stages in CO₂ Storage Wells: Current Developments, Challenges, and Prospects