Hydrophobic modified polymer based silica nanocomposite for improving shale stability in water-based drilling fluids

Xu, Jiangen; Qiu, Zhengsong; Zhao, Xin; Huang, Weian

doi:10.1016/j.petrol.2017.04.013

Cited by 52 publications

(26 citation statements)

References 22 publications

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“…A shale hydra-mechanics coupling simulation test device developed by China University of Petroleum (East China) was used for the pressure transmission experiment [43]. In this test, the shale samples were cut into cylindrical cores (diameter: 2.54 cm; The second stage was to prepare the novel shale stabilizer SMA/SiO 2 with St, MMA, AM and KH570/SiO 2 nanoparticles through emulsion polymerization [42]. Firstly, KH570/SiO 2 nanoparticles (0.4 g) were added to the monomer mixture containing St (12 g), MMA (6 g) and AM (2 g), and the mixture was ultrasonically treated for 3 h. Then, the aqueous solutions consisting of deionized water (60 mL), SDS (0.1 g), and OP-10 (0.1 g) were added to the mixture, and pre-emulsified under vigorous stirring.…”

Section: Pressure Transmission Testmentioning

confidence: 99%

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Qiu

Yang

et al. 2018

Applied Sciences

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Research on using nanotechnology to solve shale instability problems in drilling engineering has been increasing. The combination of amphiphilic polymer and silica nanoparticles may be a new way to improve shale stability. Herein, an amphiphilic polymer/nano-silica composite (poly(styrene-methyl methacrylate-acrylamide)/nano-SiO2) was introduced as a novel shale stabilizer SMA/SiO2 for water-based muds, which possessed the advantages of both physical plugging and chemical inhibition during the drilling operations. The SMA/SiO2 was prepared and characterized by Fourier transform infrared spectra (FT-IR), nuclear magnetic resonance (1H-NMR), transmission electron microscope (TEM), particle size distribution (PSD) and thermogravimetric analysis (TGA) experiments, which confirmed that SMA/SiO2 was regularly spherical with nano-scale and showed good high-temperature resistance. To evaluate the plugging capacity of SMA/SiO2, the pressure transmission test and BET analysis were applied. The results indicated SMA/SiO2 was capable of effectively plugging the pores and fractures in shale. To evaluate the hydration inhibition capacity of SMA/SiO2, the rolling dispersion experiment and contact angle test were adopted. The results demonstrated that SMA/SiO2 could reduce the tendency of shale hydration, which was better than potassium chloride (KCl) and polymeric alcohol (JHC). In addition, SMA/SiO2 only created slight variations on the rheological parameters of the water-based muds (WBMs) and showed a significant filtration control performance. Due to the outstanding performance of physical plugging and chemical inhibition, SMA/SiO2 was expected to be a novel shale stabilizer to solve shale instability problems.

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Section: Pressure Transmission Testmentioning

confidence: 99%

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Qiu

Yang

et al. 2018

Applied Sciences

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“…We found that it was difficult to prepare stable oil‐in‐water emulsion inks using PCL alone. Additionally, it has been reported that m‐SiO 2 had good biocompatibility and biological activity, and can be used as a particle emulsifier for the preparation of stable oil‐in‐water emulsions, and also acts as a rheology modifier to increase the viscosity and rheology of the emulsion inks . Stable oil‐in‐water emulsion inks were therefore prepared by adding m‐SiO 2 into the dichloromethane solution of PCL.…”

Section: Introductionmentioning

confidence: 99%

3D Printed Composite Scaffolds Incorporating Ruthenium Complex–Loaded Liposomes as a Delivery System to Prevent the Proliferation of MG‐63 Cells

Yang

Wang

Liao

et al. 2019

Macro Materials & Eng

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Owing to the propensity of osteosarcoma to recur and metastasize, the administration of a topical treatment to enhance the therapeutic effect of conventional therapy is necessary. To develop a locally released drug delivery system (DDS) to inhibit the growth and recurrence of osteosarcoma, hydrophobically modified silica nanoparticles (m‐SiO2)/poly(ε‐caprolactone) (PCL) porous scaffolds are fabricated by 3D printing emulsion inks. Ruthenium‐loaded PEGylated liposomes (RL) are then incorporated into the scaffolds to obtain the Ruthenium‐loaded PEGylated liposome scaffold (RLS) composite. The emulsion inks and the density, porosity, morphology, and mechanical properties of the scaffolds are characterized. The results indicate that the composite DDS has a relatively uniform porous structure with good mechanical properties. Drug is released from RLS in a relatively sustained manner over 48 h, which demonstrates the potential of RLS as a drug carrier. In addition, the MG‐63 cell viability and apoptosis rate are evaluated by MTT assays. The cell experiments reveal that RLS triggers mitochondrial dysfunction resulting in MG‐63 cell apoptosis. All the results indicate that RLS provides a promising approach for improving the treatment of osteosarcoma.

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“…In order to improve the stability of the borehole, scholars added some drilling additives to inhibit shale hydration. For example, some scholars used polymer to reduce water loss and inhibited its hydration expansion in shale drilling [11][12][13][14]. Some scholars use nano-compounds to maintain drilling stability to seal small holes in shale [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanism of Ionic Stabilizers on Shale Gas Reservoir Mechanics in Northwestern Hunan

et al. 2019

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The shale of the lower Cambrian Niutitang formation in northwestern Hunan is an ideal reservoir for shale gas. There is a close connection between borehole stability and drilling fluid in shale gas drilling. Ionic stabilizer is a new type of stratum consolidation agent that inhibits the hydration expansion of clay minerals and improves mechanical strength of the borehole. The traditional idea of pore wall protection is to use drilling fluid additives to prevent shale from interacting with water. However, ionic stabilizer can change the hydrophilic of clay minerals in shale, making the particles become hydrophobic and dense, therefore, the formation stability can be enhanced simultaneously. The material used in this paper is different from the normal ionic stabilizer, some chemical bonds that have been changed in the new material called enhanced normality ionic (ENI) stabilizer. This paper utilized the shale samples those obtained from Niutitang formation to study the connection between ENI and the mechanical properties of shale. Mechanical tests and microscopic pore tests were performed on different samples which were soaked in water and the ENI with different concentrations. It has been found through tests that ENI can inhibit the development of shale pores, and as the concentration increases, the inhibition increases. In addition, as the ENI concentration increases, the uniaxial compressive strength and Young’s modulus of the shale increase, and the ratio of stability coefficients decreases. It can be concluded that the ENI can improve the mechanical strength of carbon shale, and prevent the development of rock damage. Moreover, it can improve the ability of rock to resist damage, and enhance borehole stability initiatively.

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Hydrophobic modified polymer based silica nanocomposite for improving shale stability in water-based drilling fluids

Cited by 52 publications

References 22 publications

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

Effect of Amphiphilic Polymer/Nano-Silica Composite on Shale Stability for Water-Based Muds

3D Printed Composite Scaffolds Incorporating Ruthenium Complex–Loaded Liposomes as a Delivery System to Prevent the Proliferation of MG‐63 Cells

Study on the Mechanism of Ionic Stabilizers on Shale Gas Reservoir Mechanics in Northwestern Hunan

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