Synthesis of a novel environment-friendly filtration reducer and its application in water-based drilling fluids

Chang, Xiaofeng; Sun, Jinsheng; Xu, Zhe; Lv, Kaihe; Dai, Zhiwen; Zhang, Fan; Huang, Xianbin; Liu, Jingping

doi:10.1016/j.colsurfa.2019.01.055

Cited by 70 publications

(39 citation statements)

References 29 publications

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“…The second weight loss stage between 110 and 200 • C is possibly due to the break of a few amount of lateral groups such as amide groups, sulfonic acid groups, and the benzene ring groups. The third stage of 200-315 • C is due to the thermal degradation of partial lateral groups (Chang et al, 2019). The sharp reduction in weight between 315 and 460 • C is caused by the degradation of the polymer main chain (Liu and Yi, 2009).…”

Section: Tgamentioning

confidence: 99%

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

Li¹,

Lv²,

Huang³

et al. 2020

Front. Chem.

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Nanoscale plugging agent is essential to wellbore stability of troublesome shale formation in the drilling of oil and gas wells. In this paper, polymeric nanospheres (PNS) with a double cross-linked structure were synthesized using monomers of styrene (ST), acrylamide (AM), 2-Acrylamide-2-methylpropanesulfonic acid (AMPS), and dimethyl diallyl ammonium chloride (DMDAAC). PNS were characterized by FTIR, SEM and TGA. The plugging performance of PNS was analyzed using nitrogen adsorption experiments and SEM. And compatibility with water based drilling fluid (WBM) was studied. Experimental results showed that PNS had a mean particle size of 133 nm, and could retain about half of the original size after high temperature treatment under 150-200 • C. TGA showed that the initial decomposition temperature of PNS is around 315 • C. After plugging by PNS, both the specific surface area and pore volume of the shale cuttings decreased substantially compared with those of shale samples treated with water. Thus, PNS was thermal stable in WBM under high temperature and could effectively plug shale pores. Besides, PNS was beneficial to reduce both API and HTHP fluid loss of WBM.

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Section: Tgamentioning

confidence: 99%

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

Li¹,

Lv²,

Huang³

et al. 2020

Front. Chem.

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“…When drilling an oil well, the mud circulates down through the drilling pipe, then up through the annular space between the drilling pipe and the drilling hole, at a high speed [ 3 , 4 ]. Although the factors that guide the selection of a base fluid and mud additives are not simple, both technical and environmental factors should be taken into account [ 5 , 6 ]. In response to environmental requirements, most drilling muds currently used in oil fields are formulated in water.…”

Section: Introductionmentioning

confidence: 99%

“…These features are a prerequisite for the use of mud in drilling operations to perform specific functions, such as cooling and lubricating the drill bit, bringing drill cuttings (debris) to the surface, reducing friction, as well as forming a fine filter cake (plaster) on the borehole walls [ 3 , 7 , 8 ]. Plaster formation minimizes fluid loss, which is due to a high hydrostatic pressure compared to a formation pressure, through high permeability rock formations [ 6 ]. A proper filtration control is very important to avoid some problems of drilling such as excessive torque, draw-well instability, and formation damage.…”

Section: Introductionmentioning

confidence: 99%

Modified Starch as a Filter Controller in Water-Based Drilling Fluids

et al. 2020

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Herein, the effectiveness of an itaconic acid (IA) graft copolymer on native corn starch (NCS) as a filter control agent in fresh water-based drilling fluids (WBDFs) was evaluated. The copolymer (S-g-IA_APS) was synthesized by conventional radical dispersion polymerization using the redox initiation system (NH4)2S2O8/NaHSO3. The modification of the starches was verified by volumetry, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Then, three WBDFs were formulated in which only the added polymer (NCS, S-g-IA_APS, and a commercial starch (CPS)) was varied to control the fluid losses. The physico-chemical, rheological, and filtering properties of the formulated systems were evaluated in terms of density (ρ), pH, plastic viscosity (µp), apparent viscosity (µa), yield point (Yp), gel strength (Rg), and filtrated volume (VAPI). In order to evaluate the resistance to temperature and contaminants of the WBDFs, they were subjected to high pressure and high temperature filtering (VHPHT). The filter control agents were also subjected to aging and contamination with cement and salt. The S-g-IA_APS addition improved the filtering behavior at a high pressure and temperature by 38%.

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“…The general way to improve the temperature resistance ability and salt resistance ability of the WDFs is to add polymer additives into the WDFs. Unfortunately, it is often impossible to fulfill certain function tasks that are essential in challenging drilling and production environments using conventional polymer additives due to their inadequate physical, mechanical, chemical, and thermal characteristics …”

Section: Introductionmentioning

confidence: 99%

Hydrophobic‐associated polymer‐based laponite nanolayered silicate composite as filtrate reducer for water‐based drilling fluid at high temperature

Shen

Huang

et al. 2019

J of Applied Polymer Sci

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Wellbore instability caused by water invasion is the main problem in oil and gas drilling operation. This study reports the utilization of a hydrophobic-associated polymer-based laponite nanolayered silicate composite as a filtrate reducer in water-based drilling fluids (WDFs). The thermal performance and micromorphology of the composite were analyzed by thermogravimetric analysis, transmission electron microscope, and field emission scanning electron microscopy. The results indicated that the composite possessed a "bean pod" structure and a good thermal stability. The rheological properties of the composite solution were evaluated. The results showed that the hydrophobic association interaction of the composite is weak but existent, and the crosslink network structure is variable. The applied performances of WDFs containing the composite were also evaluated. Evaluation results showed that the composite could improve the properties of the thermal stability, salt tolerance, and fluid loss control of WDFs. The particle size distribution of WDFs and the micrographs of filter cakes explained the improving. The composite was expected to be applied as an efficient filtrate reducer for developing high performance drilling fluids.

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Synthesis of a novel environment-friendly filtration reducer and its application in water-based drilling fluids

Cited by 70 publications

References 29 publications

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

The Synthesis of Polymeric Nanospheres and the Application as High-Temperature Nano-Plugging Agent in Water Based Drilling Fluid

Modified Starch as a Filter Controller in Water-Based Drilling Fluids

Hydrophobic‐associated polymer‐based laponite nanolayered silicate composite as filtrate reducer for water‐based drilling fluid at high temperature

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