High temperature resistant polymer gel as lost circulation material for fractured formation during drilling

Bai, Yingrui; Liu, Chengtong; Sun, Jinsheng; Shang, Xiaosen; Lv, Kaihe; Zhu, Yukai; Wang, Feng

doi:10.1016/j.colsurfa.2021.128244

Cited by 29 publications

(10 citation statements)

References 37 publications

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“…The gelation rate directly affected the process of gel migration and plugging in the lost circulation control [22]. On the one hand, when the gelation rate was too fast, migration was difficult.…”

Section: Gelation Time Under Different Initiator Concentrationsmentioning

confidence: 99%

“…The microstructure of the shear thixotropic polymer gel system was determined using a Quanta 200F environmental scanning electron microscope (ESEM, Carl Zeiss AG, Jena, Germany) [22]. First, a certain amount of the shear thixotropic gel sample was placed in liquid nitrogen for frozen sample preparation, and the microstructure of the shear thixotropic gel was fixed by rapid freezing.…”

Section: Microstructure Characterizationmentioning

confidence: 99%

“…Esfahlan et al classified different types of PPG and discussed and evaluated the main parameters of gel properties, including particle size, swelling ability, rheological properties and plugging efficiency [21]. Bai et al used high temperature resistant polymer gel as lost circulation material for drilling [22]. The gel forming time of the gel system was 6~20 h at high temperature.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Physicochemical Properties of a Shear Thixotropic Polymer Gel for Lost Circulation Control

Yang

Bai

Sun

et al. 2022

Gels

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Polymer gel lost circulation control technology is a common and effective technique to control fractured lost circulation. The performance of a lost circulation control agent is the key to the success of lost circulation control techniques. In this study, rheological tests were used to study the physical and chemical properties of a shear thixotropic polymer gel system, such as anti-dilution, high temperature resistance and high salt resistance. The results showed that the shear thixotropic polymer gel system had the ability of anti-dilution, and the gel could be formed under a mixture of 3 times volume of heavy salt water and 3/7 volume white oil, and could keep the structure and morphology stable. Secondly, the gel formation time of shear thixotropic polymer gel system could be controlled and had good injection performance under the condition of 140 °C and different initiator concentrations. Meanwhile, the shear thixotropic polymer gel system had the ability of high temperature and high salt resistance, and the gel formation effect was good in salt water. When the scanning frequency was 4 Hz and the temperature was 140 °C, the storage modulus (G′) of the gel was 4700 Pa. The gel was dominated by elasticity and had excellent mechanical properties. By scanning electron microscope observation, it was found that the shear thixotropic polymer gel system had a stable three-dimensional reticular space skeleton under the condition of high salt, indicating that it had excellent ability to tolerate high salt. Therefore, the shear thixotropic polymer gel had high temperature and high salt resistance, dilution resistance and good shear responsiveness. It is believed that the results presented in this work are of importance for extending real-life applications of shear thixotropic polymer gel systems.

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Section: Gelation Time Under Different Initiator Concentrationsmentioning

confidence: 99%

Section: Microstructure Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Physicochemical Properties of a Shear Thixotropic Polymer Gel for Lost Circulation Control

Yang

Bai

Sun

et al. 2022

Gels

Self Cite

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“…The strength, size, and shape of these materials are important attributes that determine the plugging effect 9 . In order to increase the efficiency and success rate of lost circulation control, bridging LCM, high water loss LCM, and Liquid‐absorbing swellable LCM have been developed 10 . Kang et al conducted experiments on the lost circulation control of millimeter scale crack width, evaluated the plugging effect of different bridging material combinations, and concluded that 4% hard particles + 4% soft fibers + 0.5% hard fibers + 7% elastic particles can play the best plugging role, the best bearing capacity reached 13 Mpa 11 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and performance evaluation of water‐absorbing resin coated with polymethyl methacrylate as a lost circulation material

Bai

Deng

Yan

et al. 2023

J of Applied Polymer Sci

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Lost circulation will cause huge economic losses every year. In order to effectively reduce the harm of lost circulation to drilling, it is particularly important to use reasonable and efficient lost circulation materials (LCM). As a kind of water‐absorbing, expandable and deformable LCM, water‐absorbing resin can adapt to holes and cracks of different sizes. In this study, a kind of encapsulated water‐absorbing resin LCM (PMMA/PNAD) was proposed. The water‐absorbing resin is synthesized by acrylamide (AM), 2‐acrylamide‐2‐methyl‐propane sulfonic acid (APMS) and diallyl dimethyl ammonium chloride (DMDAAC) as reaction monomers through aqueous solution polymerization. The shell material is polymethylmethacrylate (PMMA), which is coated on the surface of the water‐absorbing resin by oil phase separation method. The results of the experimental evaluation indicate that the water‐absorbing resin possesses robust water‐absorbing and swelling properties, which significantly affect the rheological properties of the drilling fluid. However, the coated shell can effectively mitigate the impact of the absorbent resin on the drilling fluid. Under the formation environment of 100°C or 2 Mpa, the shell can soften or break to release the absorbent resin. The lost circulation control performance test results show that PMMA/PNAD has good pressure bearing capacity, and can still maintain good lost circulation control at 6.9 Mpa.

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“…Bai et al 19–21 have developed a gel plugging material with temperature resistance up to 160°C based on the adhesive plugging characteristics. The storage modulus is up to 60 Pa. Mansour et al 22,23 first proposed the intelligent temperature‐sensitive shape memory plugging material, which can expand under high‐temperature environment, improve the plugging efficiency of fracture formation, and has a good wellbore strengthening effect.…”

Section: Introductionmentioning

confidence: 99%

Novel smart plugging material for high‐temperature gas well

Li¹,

Zhou

Liu³

2023

Polymer Engineering & Sci

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A novel smart material is developed, which is synthesized by succinic anhydride, epoxy resin, and zinc acetylacetone hydrate. The smart material has excellent properties of self‐healing, shape memory, and degradation. The experimental results of performance characterization show that the material has good thermal stability. The glass transition temperature is adjustable between 100 and 120°C, and the storage modulus can reach 20 GPa. The maximum thermal expansion at 50°C is less than 15%, the thermal expansion equilibrium time at 120°C is less than 5 min, and the maximum thermal expansion is 131%. The stress relaxation time at 120°C is more than 2 h, which can slowly self‐heal on the basis of maintaining the mechanical strength. When the NaOH content is 1.5%, the degradation equilibrium can be reached in about 3 h, and the maximum degradation rate is 86%. The comprehensive performance evaluation shows that after hot rolling at 120°C/16 h, the material has no effect on the rheology and filtration properties. When plugging the fracture width of 5 × 4 mm, the pressure bearing capacity reaches 10 MPa. Its main mechanism is temperature‐sensitive expansion, and the stress relaxation effect heals and blocks the micro pore throat.

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High temperature resistant polymer gel as lost circulation material for fractured formation during drilling

Cited by 29 publications

References 37 publications

Experimental Study on Physicochemical Properties of a Shear Thixotropic Polymer Gel for Lost Circulation Control

Experimental Study on Physicochemical Properties of a Shear Thixotropic Polymer Gel for Lost Circulation Control

Synthesis and performance evaluation of water‐absorbing resin coated with polymethyl methacrylate as a lost circulation material

Novel smart plugging material for high‐temperature gas well

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