Comprehensive evaluation of self-healing polyampholyte gel particles for the severe leakoff control of drilling fluids

Yang, Lili; Xie, Chiyu; Ao, Tian; Cui, Kaixiao; Jiang, Guancheng; Bai, Baojun; Zhang, Yong‐Wei; Yang, Jun; Wang, Xingxing; Tian, Wenwen

doi:10.1016/j.petrol.2022.110249

Cited by 22 publications

(8 citation statements)

References 37 publications

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“…This result corresponds to the stress relaxation effect. Because the doping of cellulose provides ester bond or hydroxyl exchange sites for a dynamic transesterification reaction, under the condition of heat induction, a dynamic exchange reaction leads to faster reorganization of the cross-linking network structure, a shorter relaxation time of materials, and a remarkable self-healing effect. − Compared with traditional cellulose, modified cellulose provides a more active ester bond or hydroxyl site for a dynamic transesterification reaction due to its better hydrophobic dispersion performance.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of a Biobased Temporary Plugging Material: Self-Healing and Degradable

Li,

Wen,

Liu

et al. 2023

ACS Omega

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Due to the low success rate in high-temperature gas well drilling or workover operations, a new type of biobased temporary sealing material was synthesized using vanillin, succinic anhydride (SA), cellulose, and acetylacetone zinc hydrate (AZH) as catalysts. Infrared analysis proved the synthesis of vanillin-derived epoxy and the formation of a vitrimer with hydroxyl ester. The results of thermodynamic properties tests show that it has excellent thermal stability with a high glass transition temperature (T g). The dynamic mechanical test results show that the characteristic relaxation time of the material at 120 °C is 3500 s and the self-healing rate can reach 61% within 20 min. The test results of mechanical properties show that under 10 MPa pressure, it has good elastic deformation performance, the rebound rate is more than 36%, and the crushing rate is less than 17%. The degradation performance results show that the decomposition increases to 80% under 120 °C and 1.2% NaOH. The comprehensive performance evaluation results show that the new temporary plugging material has good compatibility, and its plugging performance is better than those of a gel, composite material, and shape memory polymer. The maximum fracture plugging capacity is 5 × 4 mm, with a pressure up to 10 MPa.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of a Biobased Temporary Plugging Material: Self-Healing and Degradable

Li,

Wen,

Liu

et al. 2023

ACS Omega

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“…Wang et al 16 prepared a supramolecular hydrogel based on hydrophobic association, which can effectively seal the formation and reduce drilling fluid loss. Yang et al 17 prepared an amphiphilic gel, which effectively plugged leakage at 150°C and in high salinity conditions.…”

Section: Introductionmentioning

confidence: 99%

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Zhou

Ren

et al. 2023

J of Applied Polymer Sci

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During drilling in deep formations, it is challenging to form an effective plug to avoid borehole collapse under high temperatures and pressures. In order to simultaneously improve the high‐temperature resistance and interparticle interaction capability of traditional plugging agents, a new gel plugging agent (PCAA) with self‐healing capability was developed using chitosan, acrylamide, and acrylic acid. The rheological properties of the PCAA indicate that all monomers of PCAA are essential components to improve the performance of the plugging agent. Each monomer has a unique capability, such as acrylamide playing a dominant role in the construction of the gel network, acrylic acid enhancing the gel structure, and chitosan improving the gel adhesion. PCAA can be stretched to 8.8 times prolonged, and its tensile stresses and self‐healing rate in 16 h are 17.2 kPa and 78.5%, respectively. Under the extreme conditions of 180°C and 8% NaCl, PCAA still performs well in preventing drilling fluid from invading the sand layer due to its self‐healing and plugging effects. In addition, the interaction of PCAA and clay improves the stability, rheological properties, and filtration reduction of drilling fluids at high temperatures. The developed PCAA has been successfully applied to the field with extreme conditions, providing insights into plugging agent design.

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“…The complex formation brings severe challenges to conventional plugging materials and puts forward higher requirements for temperature resistance, compressive strength, and retention capacity of plugging materials 4–6 . For the development of lost circulation materials for high‐temperature gas wells, series of works have been developed, mainly focusing on gel and temperature‐sensitive shape memory materials 7–18 …”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] For the development of lost circulation materials for high-temperature gas wells, series of works have been developed, mainly focusing on gel and temperaturesensitive shape memory materials. [7][8][9][10][11][12][13][14][15][16][17][18] Bai et al [19][20][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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Comprehensive evaluation of self-healing polyampholyte gel particles for the severe leakoff control of drilling fluids

Cited by 22 publications

References 37 publications

Preparation and Characterization of a Biobased Temporary Plugging Material: Self-Healing and Degradable

Preparation and Characterization of a Biobased Temporary Plugging Material: Self-Healing and Degradable

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Novel smart plugging material for high‐temperature gas well

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