A new type of cementation flushing fluid for efficiently removing wellbore filter cake

Erding, Chen; Wang, Chengwen; Meng, Renzhou

doi:10.1016/j.ngib.2015.09.022

Cited by 8 publications

(7 citation statements)

References 3 publications

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“…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. Filter cakes are usually composed of bentonite, weighting materials (e.g., barite, iron ore powder), and polymers/copolymers (e.g., xanthan gum, starch, and polyacrylamide cellulose) (Figure 1c,d).…”

Section: Introductionmentioning

confidence: 99%

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

Huang

et al. 2022

Energy Tech

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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.

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Section: Introductionmentioning

confidence: 99%

“…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

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“…For example, Leding et al only formed mud cakes at room temperature and pressure by rotating viscometers, and the mud cakes were only attached to the surface of the core . Chen et al soaked the core in drilling fluid to form mud cake at high temperatures without pressure difference and then soaked it in flushing fluid to simulate flushing . Wang et al formed mud cakes on the rotor of the rotary viscometer and then filled the beaker with flushing fluid to evaluate the flushing efficiency by weighing it .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the cement hydration absorbs the water from the mud cake and causes its water contraction, which also causes the interface to produce microcracks . Thus, the cement sheath and formation rock are stripped to form microcracks, reducing the bonding strength of the two interfaces, resulting in the cement sheath seal being ineffective, leading to oil, gas, and water channeling, − and reducing the service life of oil and gas wells (Figure b). − Research shows that as long as there is mud cake, regardless of how thin it is, it will form a nondurable interlayer r on the well wall, affecting the shear bonding strength and cementing quality . Therefore, mud cake must be removed before the cement is cemented with the formation rock.…”

Section: Introductionmentioning

confidence: 99%

“… 20 In the past decades, various flushing fluids have been developed, and various chemicals have been used. 3 For example, new cemented flushing fluid (wd-c) 14 and nano flushing fluid 21 were used for removing mud cake of water-based drilling fluid; new oil in water nano emulsion flushing fluid was used for removing oil-based drilling fluid mud cake; 22 , 23 vegetable oil-based microemulsion; 24 encapsulated thermochemical fluid was added to the flushing fluid to dissolve the mud cake; 25 and diethylenetriamine pentaacetic acid is combined with other catalysts to remove mud cake 26 , 27 formed by barite based drilling fluid. The effectiveness of the flushing fluid in removing mud cake needs to be evaluated before field application.…”

Section: Introductionmentioning

confidence: 99%

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Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Yuan

Yang

et al. 2022

ACS Omega

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An excellent flushing efficiency evaluation device is indispensable for studying the cementing flushing fluid. However, the existing flushing efficiency evaluation device cannot simulate the formation and flushing process of the downhole mud cake. Therefore, this paper proposes a novel flushing efficiency evaluation device that can simulate the formation and flushing of downhole mud cakes. The rotational speed of the device during flushing and the rotor’s diameter is deduced based on the principle of equal wall shear rate. The evaluation device and method can be used to quantitatively evaluate the flushing efficiency of the flushing liquid on the mud cake under high temperatures and high pressures. This device analyzed the effects of the annular gap, temperature, construction displacement, and flushing fluids on flushing efficiency. The results show that the smaller the annular gap, the higher the temperature, the larger the displacement, the higher the scouring efficiency, and the higher the shear bond strength. Fiber flushing has the dual function of mechanical and chemical flushing, so its flushing efficiency is 14.75% higher than that of heavy flushing fluid at 10 min. The surfactant in the emulsified rinse leads to a sudden increase in rinse efficiency in the middle and late stages. The reduced flushing efficiency of the flushing fluid is due to the reduced ζ potential.

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Simulation of reservoir dynamic damage and influencing factors of horizontal wells in heterogeneous carbonate reservoirs

Xu,

Wang,

Gao

et al. 2024

Energy Science & Engineering

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As the development of well types for low permeability reservoirs shifts from vertical to highly inclined/horizontal wells, targeted studies of oil and gas reservoir damage must be conducted for such well types to improve the science and effectiveness of acidification conversion. Taking into account the formation of mud cake and the dynamic damage factors caused by drilling fluid on the reservoir during horizontal well drilling, a refined dynamic description model for nonuniform damage in horizontal wells was established. The coupled simulation accounts for the dynamical destruction of the skin factor of the reservoir and the dynamical generation of the slurry. The coupled model consists of a radial mud cake dynamic formation model, a reservoir damage radius model, a permeability distribution model, and a horizontal well inhomogeneous skin factor model. It captures the dynamic evolution of reservoir damage due to drilling fluid contamination during horizontal well drilling and provides a real‐time representation of changes in the reservoir skin factor of horizontal wells, measuring the depth and extent of radial reservoir damage. Clarifying the extent of reservoir damage and its impact in horizontal well sections can help select appropriate acidification methods, improve acid distribution processes, and ultimately improve the effectiveness of mitigating reservoir damage and increasing oil and gas well productivity.

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A new type of cementation flushing fluid for efficiently removing wellbore filter cake

Cited by 8 publications

References 3 publications

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

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

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Simulation of reservoir dynamic damage and influencing factors of horizontal wells in heterogeneous carbonate reservoirs

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A new type of cementation flushing fluid for efficiently removing wellbore filter cake

Cited by 8 publications

References 3 publications

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

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

Novel Evaluation Method for Flushing Efficiency Based on the Principle of Wall Shear Rate Equality under High Temperature and High Pressure

Simulation of reservoir dynamic damage and influencing factors of horizontal wells in heterogeneous carbonate reservoirs

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

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