Cement Slurry System Research Articles

Study on multicomponent composite anti-corrosion cement slurry system suitable for ultra-high temperature acid gas wells

In the field of oil cementing, corrosion has always been a major problem that perplexes researchers. In the past, the research mainly focused on solving the corrosion problem of cement stone with temperature below 150°C, and there was a lack of corrosion research cases for ultra-high temperature. In addition, the gas channeling problem in the cementing of ultra-high temperature acid gas wells cannot be ignored, which further increases the difficulty in the design of anti-corrosion cement slurry system. Therefore, from the perspective of anti-corrosion, gas channeling and high temperature resistance, this paper uses hydroxyapatite blast furnace slag and functional temperature resistant and anti-corrosion composite emulsion as anti-corrosion additives to build a multi-component composite ultra-high temperature anti-corrosion cement slurry system with good engineering performance and a density range of 1.9 g/cm3-2.4 g/cm3, and analyzes its microstructure and phase composition. The corrosion inhibition mechanism of multicomponent composite cement paste was discussed.

Thixotropic cement slurry system types and evaluation methods

Thixotropy is one of the important contents of the rheology for dispersed systems. Thixotropy is widely used in engineering cement slurry, and the thixotropy of substances in actual engineering is often used as an auxiliary means and method of engineering technology. The concept and mechanism of thixotropy are briefly introduced. The thixotropic cement slurry system is divided into inorganic and organic types, and the shortcomings of various types of thixotropic cement slurry are pointed out. The evaluation methods of the thixotropic ring method, static shear force method, hysteresis ring total energy method, thixotropic index method, thin blade horizontal cutting method, step method, hysteresis loop method, and thixotropic coefficient method is introduced. Finally, future research on thixotropy has prospected.

Study on Key Technologies of Drilling and Completion of 8000 Meter Ultra Deep Wells in Platform Basin

In order to solve the problems faced by 8000m class drilling and completion in tarim Basin, such as high temperature, high pressure, complicated formation, low bearing capacity of Permian tuff and development of fractures and pores in basalt segment, etc. Combined with the actual construction situation, has formed the basin area of 8000 m class drilling and well completion key technology optimization results, including optimization of casing program design and matching high crowded outside casing strength, super light corrosion resistance of titanium alloy pipe, under different working condition of the high strength developeded. These technologies, new anti-gas channeling resistance to high temperature high density cement slurry system in sectors such as advanced and practical technology. The successful application of the technology system in the 8000m class drilling in the Platform basin area has greatly boosted the exploration and development process of deep oil and gas resources, and helped improve the competitiveness of the drilling and completion market in China.

Effect of Ultrafine Calcium Silicate on the Mechanical Properties of Oil Well Cement-Based Composite at Low Temperature

A low-temperature environment will reduce the hydration rate of oil well cement-based composites, resulting in the slow development of mechanical strength, which cannot meet the requirements of cementing operations. In order to improve the early strength of cement paste under low temperature, the influence of ultrafine calcium silicate powder on the rheological properties, water loss, thickening time and permeability of oil well cement-based composites was evaluated. The compressive strength, flexural strength and impact strength of cement paste with different contents of ultrafine calcium silicate were studied. The hydration process and microstructure of cement paste were analyzed by hydration heat measurement system, X-ray diffraction (XRD) and scanning electron microscope (SEM). The experimental results show that the ultrafine calcium silicate has a certain impact on the rheology and thickening time of cement slurry, and dispersants and retarders are required to adjust these properties when it is used. The ultrafine calcium silicate can improve the stability of cement slurry and reduce water loss and permeability. In addition, under the condition of curing at 20 °C for 24 h, the compressive strength, flexural strength and impact strength of cement paste with 8% ultrafine calcium silicate content increased by 243.0%, 278.5% and 66.3%, respectively, compared with the pure cement paste. The hydration of cement slurry is accelerated by ultrafine calcium silicate, the hydration temperature is enhanced and the heat release of hydration is increased. The ultrafine calcium silicate improves the formation degree of hydration products and makes the structure of cement paste more compact. The research results help to design a low-temperature and early-strength cement slurry system.

Matching analysis and experimental study of mechanical properties of cement sheath interface

The cement sheath interface is an important component of the wellbore barrier system. A mismatch between the interfaces of the cement sheath may result in leakage. This paper presents a method for assessing cement sheath interface adaptability based on the Dundrus composite parameter method, and the corresponding test flow for evaluating cement sheath integrity is provided for verification. According to the calculation results, stress concentrations are more common at the first interface of the cement sheath. The second interface is relatively unaffected by stress concentration under the same working conditions as the first interface. Stress concentration at the interface can be effectively alleviated by increasing the elastic modulus of the cement sheath or decreasing the Poisson's ratio. However, if the elastic modulus of the cement sheath increases, the cement sheath will be more susceptible to plastic deformation, and the strength coefficient of the singular stress field at the interface will decrease by approximately 10%. As a result, reducing the Poisson's ratio of the cement sheath effectively reduces stress concentration at the interface end. Especially in sandstone formations, the strength coefficient of the singular stress field at the interface can be reduced by 63% at most, resulting in a good interface adaptability. As a result of the above calculations, three groups of cement slurries with different mechanical parameters were selected and tested. As expected, the test results confirmed the applicability of the method. In light of the above results, cement slurry engineers should factor in the stress singularity effect when designing cement slurry systems. To prevent plastic deformation, high-strength and low-elastic cement should be employed, and the Poisson's ratio should be appropriately reduced in order to prevent interface stress concentration, thereby ensuring the integrity of the cement sheath in an increasingly harsh downhole service environment.

Evaluation and high temperature strengthening mechanism of alkali activated biological-ash hybrid glass fiber-carbon fiber cement slurry system

In recent years, with the rapid development of biomass combustion power generation and heat generation as the main application industry, the amount of byproduct biological ash is also increasing year by year. How to effectively utilize the biological ash in a more green, environmental friendly and economic way has become a research hotspot. In view of the problem that the mechanical properties of the cement stone decreased when the conventional latex was used as the toughening agent, based on the introduction of high dispersive composite modified fiber to enhance the toughness of the cement stone, this paper analyzed the physical and chemical properties and application status of the biological ash, and further explored the influence and role of the biological ash as the cement stone admixture on the high-temperature mechanical properties of the composite fiber cement stone Mechanism. The results show that when the dosage of biological ash is in the range of 0–10% (wt%), it has little effect on the basic slurry properties of cement stone, and has a certain preventive effect on the gas channeling of cement stone. In the analysis of comprehensive mechanical properties, the activated biological ash can enhance the compactness of cement matrix under high temperature by reducing the Ca/Si ratio through the secondary pozzolanic effect, stimulate the formation of a large number of hydration products, and strengthen the later strength growth rate of cement. The high temperature resistance of cement paste can be effectively improved by hybrid high dispersion composite fiber.

Preparation, characterization, and evaluation of suspension stabilizer for low‐density cement slurry for cementing

AbstractA low‐density cement slurry system is commonly used in low‐pressure and leakage‐prone cementing. However, the suspension stability of the system is more difficult to control because of the addition of lightning material. Especially under the condition of large temperature differences, the relative motion between solid particles with large density differences increases, which will aggravate the instability of the slurry and affect the cementing quality. Therefore, to effectively control the suspension stability of the low‐density cementing slurry system, the suspension stabilizer PAND was synthesized by free radical solution polymerization withN‐vinyl caprolactam (NVCL); 2‐acrylamide‐2‐methyl propane sulfonic acid (AMPS),N, N‐dimethyl acrylamide (DMAA) as monomers. The effect of PAND on the stability of low‐density cement slurry under a large temperature difference (40 ~ 120°C) was evaluated. The results showed that under 40 ~ 120°C, adding 0.8% PAND can control the water separation of the cement slurry to 0; the density difference between the upper and lower parts of the cement stone column after curing is less than 0.01 g/cm3. The mechanical properties of cement stone are improved, which shows that it has a good suspension stability effect on low‐density cement slurry systems. The analysis of UV spectroscopy and scanning electron microscopy showed that PAND formed an intermolecular hydrophobic association network structure with the increase in temperature, which could maintain the viscosity of the solution system, thus playing an influential suspension stability role.

A Study on the Integrity Evaluation of Cement Sheaths for Deep Wells in Deep Water

The complex temperature and pressure conditions of deepwater wells have a serious impact on cementing quality. Therefore, the integrity of the cement seal becomes a critical factor that can restrict the safety of the wellbore, especially for wells ranging from the conventional deep water to deep water with more prominent deep stratum problems. The operating conditions of deep wells in deep water (referred as the dual-deep well) are complex and harsh. For the conventional evaluation device, it is difficult to accurately simulate the alternating HTHP conditions and to clarify the location and situation of the cement sheath leakage, which directly leads to the deviation of the evaluation results from the engineering reality. To solve this defect, based on the condition and structure characteristics of dual-deep wells, a device and method for casing/cement sheath/formation seal integrity evaluation for dual-deep wells at HTHP has been developed and established. Combined with the analysis of microstructure and micromorphology, the sealing ability and integrity of different cement slurry systems were evaluated. Through this study, a set of cement slurry systems suitable for dual-deep wells is selected that can satisfy the requirements of dual-deep wells with excellent isolation ability and seal integrity under temperature and stress changes. The research results provide a reference for deepwater wells’ wellbore integrity evaluation and research.

Study on an Epoxy Resin System Used to Improve the Elasticity of Oil-Well Cement-Based Composites

Oil-well cement-based materials have inherent brittleness; therefore, they cannot be directly used to seal oil and gas wells for a long time. To improve the elasticity of oil-well cement-based composites, a flexible epoxy resin system was developed. The flexibility, TG, and SEM of the cured resin system were evaluated. At the same time, the resin was added to oil-well cement-based materials to improve its elasticity. The compressive strength and elastic modulus of resin cement stone were tested, and the microstructure was analyzed by XRD, TG, and SEM/EDS. The results showed that the structure of the cured resin is compact, the thermal decomposition temperature is 243.9 °C, and it can recover its original shape after compression. At the curing age of 28 days, the compressive strength of cement-based composites containing 30% resin decreased by 26.7%, while the elastic modulus significantly decreased by 63.2%, and the elasticity of cement-based composites was significantly improved. The formation of hydration products (e.g., calcium silicate hydrate, and calcium hydroxide) in the resin cement slurry is obviously lower than that of pure cement, which is the reason for the decrease in compressive strength. The flexible structure of polymer particles and polymer film formed by epoxy resin is distributed inside the cement stone, which significantly improves the elasticity of oil-well cement-based composites. The results of this paper are helpful for the design of elastic cement slurry systems.

Polymer/organic compound high-temperature retarder used for oil and gas exploration, and development

During the process of oil and gas exploration and development, the cementing operation is the key factor to ensure oil well productivity, and the performance of additives is directly related to the success or failure of cementing. In this study, the polymer retarder PID-1 was synthesised by aqueous solution polymerisation; the chemical structure, thermal stability and microstructure of PID-1 were studied by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. In addition, the retarding effect and mechanism of PID-1 were analysed based on low-field nuclear magnetic resonance analysis, adiabatic calorimetry and scanning electron microscopy. Then, the polymer/organic compound high-temperature retarder PID-2 was constructed by adding organic compound PN with well retarding property; the retarding effect, thickening property, temperature and dosage sensitivity of PID-2 were then investigated. Combined with porosity evolution, type and content of hydration products, the internal mechanism of retarder PID-2 in relation to early mechanical strength development of the cement slurry system was revealed.

Preparation and investigation of microencapsulated thermal control material used for the cementing of gas hydrate formations

Deep-water cementing operations may encounter gas hydrate formations, and the cement slurry hydration exotherm can easily cause their decomposition and pose a threat to cementing operations. Therefore, the cement slurry with low hydration heat is needed for cementing in deep water gas hydrate zones. In this paper, a microencapsulated temperature control material (MEPCM) was synthesized. When MEPCM was incorporated into the oil well cement slurry, its temperature control effect on cement slurry was evaluated. Firstly, the chemical structure, microstructure, and phase transformation characteristics of MEPCM were researched by FTIR, SEM-EDS, DSC, etc. The results show that the thermal evolution of the cement slurry can be controlled by MEPCM. Secondly, MEPCM was introduced into oil well cement, and the temperature change of the cement slurry hydration process was detected by a self-made semi-insulating device to study the temperature control ability of MEPCM in cement slurry. The results show that the thermal development of the cement slurry is regulated by the MEPCM. At the same time, the effect and mechanism of MEPCM on the early mechanical performance of cement slurry were studied, and found that the right amount of MEPCM can promote the cement stone’s early strength development. As a result, a low hydration heat cement slurry system suitable for cementing deep-water gas hydrate formations was successfully prepared.

Temperature regulation effect of low melting point phase change microcapsules for cement slurry in nature gas hydrate-bearing sediments

Nature gas hydrates are only stable at low temperatures and high pressures; consequently, the hydration heat of cement slurry can easily decompose hydrates. Therefore, low-heat cement slurry systems need to be used during well cementing in nature gas hydrate-bearing sediments. In this study, temperature-regulated microcapsules having binary alkanes as the core material and CaCO3 as the shell were prepared by self-assembly. In addition, the hydrophobic modified graphite was added into core material to improve the temperature sensitivity. The morphology, thermal properties, and hydrophilicity of the microcapsules were characterized by multiple techniques. The hydration property, setting behavior, pore distribution and compressive strength of cement slurry/stone containing the microcapsules was studied. Furthermore, the effect of cement slurry hydration on hydrate-bearing sediments was tracked by a hydrate-bearing sediment-damage simulation device. The results demonstrated that the microcapsules have good temperature regulating properties. The addition of modified graphite increased the sensitivity of the microcapsules to temperature changes. Compared to the standard group, the maximum hydration temperature of the cement slurry decreased by 3.7 °C upon the addition of microcapsules. The simulation trail showed that the addition of microcapsules impeded the damage to hydrate-bearing sediments that were associated with the hydration of the cement slurry.

Effects of Alkali on Water Soluble Hexavalent Chromium in Ordinary Portland Cement.

Due to the toxicity and mobility of chromium, the disposal of chromium-containing waste is a pressing issue. Co-processing of chromium-containing waste in a cement kiln is currently one of the most effective methods. However, the presence of water-soluble hexavalent chromium (Cr(VI)) in cement limits the use of this method. In this study, Na2CO3 was used to simulate alkali in industrial raw materials to investigate the pattern of influence of alkali content on water-soluble hexavalent chromium. The mechanisms associated with the oxidation and dissolution of chromium were investigated using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma emission spectrometry (ICP-OES). The proportion of Cr(VI) in the clinker detected by XPS increased rapidly with increasing alkali content. In the cement slurry system, alkali promotes more hexavalent chromium leaching by influencing pH and other ion concentrations (Ca2+, SO42−). Therefore, the addition of alkali to either the raw meal or to the cement slurry system will favour an increase in the water-soluble Cr(VI) content. This study may provide theoretical guidance for the preparation and use of clinkers containing chromium.

Effect of CO2 on the Hydration of Aluminate Cement Under Conditions of Burning Reservoir in Heavy Oil Thermal Recovery

Under conditions of heavy oil thermal recovery, cement sheaths often suffer high-temperature performance degradation and CO2 corrosion. The performance of Class G oil well cement commonly used for cementing, deteriorates significantly at high temperatures and in CO2 environments, which can easily cause accidents. By contrast aluminate cement (CAC), at the same time, has good high-temperature resistance and corrosion resistance. Therefore, this study explored the mechanical properties and permeability of CAC with a high-temperature stabiliser cement slurry system (C1), pure CAC slurry system (C2) and Portland cement with sand cement slurry system (C3) before and after corrosion at 50, 300, 400, 500, and 600°C. The micromorphology, hydration products and pore structure of the cement paste before and after corrosion were analyzed using scanning electron microscopy, X-ray diffraction, thermogravimetry and nitrogen adsorption specific surface area and pore diameter analysis; additionally, the hydration mechanism of CAC under high temperatures and in CO2 environments was explored. The results show that the degree of degradation of the mechanical properties of C1 cement slurry system at high temperatures and under CO2 corrosive environments is significantly lower than that of the C3 cement slurry system. At a curing high temperature of 400°C, the maximum strength of the C1 cement paste reached 36.39 ± 0.37 MPa. The addition of a high-temperature stabiliser improved the mechanical properties of CAC at low temperatures, reduced the formation of C3ASH4 in the cement paste at high temperatures, and improved the strength of the cement paste after high-temperature curing. Compared with the C3 cement slurry system, the C1 cement slurry system had better high-temperature resistance and corrosion resistance and was more suitable for application under conditions of a burning reservoir in heavy oil thermal recovery.

Research on the Mechanical Integrity of Low-Density Cement Mortar

Poor mechanical integrity of cement sheaths during the production of oil and gas wells may cause air channeling and water channeling issues in the wells, leading to severe safety problems, and adversely affecting the safety and efficiency of the oil and gas resources production. This article focuses on a low-density cement slurry system with added floating beads. The compressive strength and flexural strength of cement stones, the mechanical integrity of cement rings, and triaxial mechanical properties were assessed. The optimal dosage of floating beads and the evolution of the cement stone’s mechanical properties and deformation ability were discussed. Bonding strengths of the first and the second interfaces were evaluated using the shrinkage test results of the cement mortar. Finally, the microscopic mechanism of the change in mechanical properties was analyzed by scanning electron microscopy. The results showed that the cement mortar exhibited the best compressive strength, mechanical integrity, and deformability after blending with 15% floating beads. At the same time, the volume shrinkage of the cement mortar mixed with 15% floating beads was the smallest, only 0.00667%, plausibly indicating good bonding with a casing and the formation to reduce the occurrence of gas channeling. Finally, the microscopic test of the cement mortar showed that the bonding between floating beads and cement was not tight, so internal cracks in the cement easily developed along the bonding part of cement and floating beads. The more floating beads were mixed, the more likely was cement mortar destroyed.

Study on Synchronous Propagation Behavior of Hydraulic Fractures and Cementing Interfacial Cracks during Fracturing of Shale Horizontal Wells

Abstract Large-scale staged hydraulic fracturing stimulation technology is an effective method to increase shale oil and gas recovery. However, cracks will appear along with the cementing interface and expand under the drive of fluid while hydraulic fracturing, failing wellbore sealing. To solve this problem, the synchronous propagation model of hydraulic fractures and cementing interfacial cracks in hydraulic fracturing is established. The Newton iteration method and displacement discontinuity method are used to solve the propagation length of each fracture, and the effects of cement sheath parameters and fracture parameters on the interface failure range are studied. The results show that when multiple hydraulic fractures expand, the interfacial cracks are also affected by “stress shadow,” offering an asymmetric expansion, and the cementing interfacial cracks in the area between hydraulic fractures are easier to expand. The failure range of interface between the hydraulic fractures expands rapidly if the cement elastic modulus increases from 5 GPa to 10 GPa; while the cement elastic modulus is higher than 10 GPa, the failure area is mainly affected by the number of hydraulic fractures; the failure range is not affected by the number of hydraulic fractures if the hydraulic fracture spacing is less than 10 m or more than 30 m; while the crack spacing is between 10 m and 30 m, the more the number of hydraulic fractures, the easier it is to cause the interface failure range to increase and connect. The research results can provide a theoretical basis for the optimization of cement slurry systems and fracturing parameters.

Experimental study and analysis on the microstructure of hydration products on the well cementation second interface and interface strengthening strategies

The cement-formation adhesion on the second interface in cementing engineering is a crucial factor that affects the long-term sealing capacity of the cement sheath. The bonding strength of the cement on the second interface would deteriorate easily under complex geological conditions, resulting in annular fluid channeling and sustained casing pressure, which severely affects oil and gas development. Accurate understanding on the microstructure and evolution characteristics of hydration products on the second interface is fundamental to improve the sealing capacity of the cement sheath. In this study, an experimental device for testing the sealing capacity of the cement sheath is developed. The testing device has the ability to simulate various conditions including high temperature, high pressure, dynamic formation water, and real-core interface. Using the testing device, a testing procedure is established to determine the sealing capacity of the cement sheath on the second interface. Through analysis on the microstructure and components of interface products under curing conditions, and comparison of interface breakthrough pressure for different slurry systems, the following conclusions can be obtained The main reason for the failure of cementing on the second interface is the crystal growth of calcium hydroxide (Ca(OH)2 or CH) and ettringite (3CaO·Al2O3·3CaSO4·32H2O or AFt). With the further progress of the hydration reaction, crystals in the transition zone near the interface continue to expand, inhibiting the formation of calcium silicate hydrate (C–S–H) gel and causing insufficient bonding strength on the interface; The non-polar spacer liquid, the foam cement slurry, and a system of nano-liquid silicon cement slurry are recommended to be utilized to introduce non-polar groups and a silicon-oxygen (Si–O) bond for changing the surface energy of the interface, inhibiting the formation of crystals, enhancing the bonding between the C–S–H gel and the interface, increasing the cementing strength of C–S–H gel on the interface, and improving the sealing capacity of the cement sheath. In the paper, a new testing device is introduced and a testing method for the microstructure on the second interface is developed, and a new idea is provided for research and development on bonding strength reinforced functional materials, cement slurry and spacer fluid systems. Under experimental conditions in this work, the interfacial bonding strength is increased by 20% compared with the conventional cement slurry, which is expected to provide guidance and reference for improving the long-term sealing capacity on the well cementation second interface.

Construction and Application of High-Strength Flexible Cement Sheath for Deep and Ultra-deep Shale Gas Cementing

With the gradual development of oil and gas exploration, deep and ultra-deep shale gas has become the main block for shale gas reserve growth and production addition in China. Deep and ultra-deep shale gas is characterized by deep burial depth, high pore pressure and formation fracture pressure, so the production and transformation means in the later stage are more complicated. Deep shale gas cementing puts forward higher requirements on cement slurry system, especially the mechanical properties and long-term sealing ability of cement sheath under high temperature and pressure conditions. This paper studies the cement slurry system which can meet the requirements of staged fracturing and long-term sealing. Through the physical simulation device, the mechanical property analysis and evaluation method of cement sheath under staged fracturing condition is developed. By interphase filling technology, a new type of elastic material is developed. Meanwhile, nano-emulsion filling technology is used to realize void filling and reduce porosity of cement stone and micro-ring gap. Finally, a high-strength flexible cement slurry system for deep and ultra-deep shale gas well cementing is constructed, with a temperature resistance of 200°C, elastic modulus of cement stone less than 6GPa and compressive strength ≥25MPa/48h. It can meet the requirements of 120MPa and 25 cyclic loading staged fracturing. This cement slurry system has been widely applied in shale gas areas, and the durability and sealing ability of cement sheath have been significantly improved, which can meet the needs of large-scale staged fracturing and ensure the efficient development of deep and ultra-deep shale gas wells.

Synthesis and properties of temperature-tolerance resistant hydrophobically associating polymer suspension agent using response surface method

Aiming at the problem that the oil well cement slurry is easy to settle and lose its stability under high temperature environment, and combining with the characteristics of traditional cement admixtures "thickening at low temperature and thinning at high temperature", we developed a kind of high-temperature resistant cement suspension agent. A quadripolymer suspension agent P-AN18 was synthesized by free radical polymerization using 2-Acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide (AM), quaternary ammonium salt monomer N-N octadecyl dimethyl allyl ammonium chloride (DMAAC-18), and high-temperature resistant monomer N-Vinyl-2-Pyrrolidinone (NVP). The synthesis conditions were optimized using the response surface method (RSM) innovatively, the response surface graph (3D) showed the influence of independent variables on the rheological properties and density difference of cement slurry influence. The hydrophobic association structure and high-temperature resistance mechanism of P-AN18 were analyzed by infrared spectroscopy, nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), nanoparticle size analyzer, fluorescence probe test and scanning electron microscope (SEM) in a freezing environment. The effect of P-AN18 on maintaining the stability of cement slurry system at high temperature was evaluated. The results showed that the polymer suspension P-AN18 has good temperature resistance and compatibility with cement slurry. At 200 ℃, P-AN18 can keep the cement slurry system stable, and the density difference between the upper and lower part of the solidified cement column is less than 0.01 g/cm 3 . P-AN18 provides a new method for controlling the settlement stability of high-temperature cement slurry, which is expected to be used to improve the safety and cementing quality of deep well cementing. • Predicting density contrast using RSM model. • Characterizing Polymer suspensions from macro and micro perspectives. • Effective prevention of thermal thinning and particle settling of cement slurry.

Effect of Waste Glass on Slurry Rheological Properties of Cement and Concrete

In order to realize the recycling of waste glass, the influence of waste glass on the rheological properties of cement paste and concrete was studied. The rheological parameters were obtained by linear fitting with Bingham model. The results showed that for cement slurry system, with the replacement amount of waste glass increasing from 0 wt% to 20 wt%, the plastic viscosity of slurry increased gradually, while the yield stress decreased. Fixing the replacement amount of fixed waste glass at 5 wt%, the plastic viscosity and yield stress of cement slurry decrease with the increasing dosage of polycarboxylate superplasticizer. The cement slurry conforms to the characteristics of pseudoplastic fluid. For initial concrete slurry system, with the increase of waste glass replacement amount from 0 wt% to 20 wt%, the plastic viscosity of slurry increased, while the yield stress gradually decreased. And then the rheological properties of concrete slurry were closed to Newtonian fluid. After 1 hour, the plastic viscosity of concrete increased first, then decreased, and finally increased again. The yield stress decreased gradually. And the rheological properties of slurry were also close to Newtonian fluid.