Interaction of blockers on drilling fluids rheology and its effects on sealing of fractures and prevention of filtrate invasion

Soares, Andréia Silveira Freire; Marques, Mônica Regina da Costa; Calçada, Luís Américo; Filho, Moacyr Nogueira Borges; Petkowicz, Carmen Lúcia de Oliveira

doi:10.1016/j.petrol.2018.07.053

Cited by 15 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The drilling process is fraught with uncertainties, such as temperature, salinity, pH value, and solid content of drilling fluid, which vary depending on the environment and drilling technology. These factors influence the performance of cellulase. , It is imperative to assess the capacity of cellulase to degrade drilling fluids in different environments. The cellulase’s efficacy was evaluated by comparing the AV and AFL before and after degradation of drilling fluid within 12 h. The drilling fluid formulation remained consistent with that shown in Section .…”

Section: Resultsmentioning

confidence: 99%

“…These factors influence the performance of cellulase. 52 , 62 It is imperative to assess the capacity of cellulase to degrade drilling fluids in different environments. The cellulase’s efficacy was evaluated by comparing the AV and AFL before and after degradation of drilling fluid within 12 h. The drilling fluid formulation remained consistent with that shown in Section 3.2.1 .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Construction and Evaluation of a Degradable Drilling Fluid for Underground Coalbed Methane Extraction Boreholes

Kong,

Tang,

Luo

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Gas drainage with bedding boreholes is an efficient method for preventing gas and achieving coal and gas comining in underground mining engineering. An underground pressurized drilling method is proposed to maintain the borehole stability. However, the presence of natural fractures in coal seams poses challenges during pressurized drilling. Therefore, it is crucial to establish a low-leadage degradable drilling fluid system that minimizes coal seam damage. In this study, a degradable drilling fluid system was developed based on the characteristics of coal seams. The performance and influencing factors of the drilling fluid and the degrading capability of cellulase were examined. Moreover, the damage of the drilling fluid on fractured coal seams was investigated using core flow test methods. The results showed that additives significantly improved the rheology, filtration, and inhibition of the drilling fluid. The drilling fluid system exhibited excellent stability, rheological properties, low filtration, and sealing performance in coal seam environments. However, drilling fluid invasion and mud cake blockage negatively affected gas flow in fractured coal seams, and a higher content of filtrate reducer hindered the recovery of the gas flow rate. Cellulase was used to degrade polymers and alleviate the challenge of mud cake removal after drilling. Research on the influencing factors of cellulase indicates that the degradation efficiency of cellulase enzymes is influenced by the temperature, pH, salinity, and solid-phase content. For polluted coal samples, the gas flow rate significantly recovered after treatment with a cellulase solution. This study provides insights into a degradable drilling fluid system that can enhance underground pressurized drilling methods and minimize reservoir damage.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Construction and Evaluation of a Degradable Drilling Fluid for Underground Coalbed Methane Extraction Boreholes

Kong,

Tang,

Luo

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…In oil industry, hydrogels are widely used in drilling operations or in well stimulation treatments, also as water shut‐off and as loss control materials (LCM) [47,48] . In the search of new materials with high hydrophilicity, a new hydrogel was obtained from acrylamide crosslinked with 1,3‐divinyltetramethyldisiloxane using as initiator system ammonium persulfate (APS) and N , N , N′ , N′ ‐tetramethyl ethylenediamine (TEMED) (Figure 6).…”

Section: Materials For Oil and Gas Industrymentioning

confidence: 99%

From the Lab to the Field: Organic Materials for Industrial Applications and Environmental Remediation

Manzano,

D'Accorso

2023

ChemPlusChem

View full text Add to dashboard Cite

Many new achievement developments for different industries have their origin in the basic science. Within the last years, this trend is gaining much attention since the interaction between both fields (scientific and industry) is increasing. This article presents some rational materials chemical modifications that were developed by the basic science and were, then, transferred to the productive sector. Conducting hydrophobic coatings for aerospace applications, hydrogels for the oil & gas industry as well as polymers for removal of heavy metal were some of the topics approached in the lab to solve industrial problems. Many times, nature is a great source of inspiration to produce new materials. In this sense, superhydrophobicity and superhydrophilicity (concepts closely related to our everyday life) were the bioinspiration for the development of membranes. These membranes were able to separate hydrocarbons and water, which found application in the treatment of subterranean water for oil & gas industry.

show abstract

“…The combination of biopolymers, including CMC, hydroxypropyl starch (HPS), and xanthan, with fluid additives, showed higher and improved viscosity. However, the ζ-potential value of the synthesized polymeric solution was unstable and fluctuating, leading to its unsuitability for use in operations. , Additionally, a combination of various natural polymers has been employed in fluids as a thermal stability control and viscosity modifier agent to improve fluid properties. However, despite these benefits, polymers have certain limitations related to displacement in the wellbore.…”

Section: Introductionmentioning

confidence: 99%

Modification of Cellulose Ether with Organic Carbonate for Enhanced Thermal and Rheological Properties: Characterization and Analysis

et al. 2023

View full text Add to dashboard Cite

Reduction in viscosity at higher temperatures is the main limitation of utilizing cellulose ethers in high thermal reservoir conditions for petroleum industry applications. In this study, cellulose ether (hydroxyethyl methyl cellulose (HEMC)) is modified using organic carbonates, i.e., propylene carbonate (PC) and diethyl carbonate (DEC), to overcome the limitation of reduced viscosity at high temperatures. The polymer composites were characterized through various analytical techniques, including Fourier-transform infrared (FTIR), H-NMR, Xray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), ζ-potential measurement, molecular weight determination, and rheology measurements. The experimental results of structural and morphological characterization confirm the modification and formation of a new organic carbonate-based cellulose ether. The thermal analysis revealed that the modified composites have greater stability, as the modified samples demonstrated higher vaporization and decomposition temperatures. ζ-potential measurement indicates higher stability of DEC-and PC-modified composites. The relative viscometry measurement revealed that the modification increased the molecular weight of PC-and DEC-containing polymers, up to 93,000 and 99,000 g/moL, respectively. Moreover, the modified composites exhibited higher levels of stability, shear strength and thermal resistance as confirmed by viscosity measurement through rheology determination. The observed increase in viscosity is likely due to the enhanced inter-and intramolecular interaction and higher molecular weight of modified composites. The organic carbonate performed as a transesterification agent that improves the overall properties of cellulose ether (HEMC) at elevated temperatures as concluded from this study. The modification approach in this study will open the doors to new applications and will be beneficial for substantial development in the petroleum industry.

show abstract

Interaction of blockers on drilling fluids rheology and its effects on sealing of fractures and prevention of filtrate invasion

Cited by 15 publications

References 36 publications

Construction and Evaluation of a Degradable Drilling Fluid for Underground Coalbed Methane Extraction Boreholes

Construction and Evaluation of a Degradable Drilling Fluid for Underground Coalbed Methane Extraction Boreholes

From the Lab to the Field: Organic Materials for Industrial Applications and Environmental Remediation

Modification of Cellulose Ether with Organic Carbonate for Enhanced Thermal and Rheological Properties: Characterization and Analysis

Contact Info

Product

Resources

About