Study of 4, 4′-methylenebis-cyclohexanamine as a high temperature-resistant shale inhibitor

Zhong, Hanyi; Qiu, Zhengsong; Tang, Zhichuan; Zhang, Xin; Xu, Jiangen; Huang, Weian

doi:10.1007/s10853-016-0037-y

Cited by 68 publications

(33 citation statements)

References 41 publications

(42 reference statements)

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“…Thus, the wettability of shale surface was greatly changed after adsorption of SDPE, which became more hydrophobic to effectively decrease the capillary effect. Moreover, a more hydrophobic shale surface could significantly decrease the adsorption of water, thus favoring shale stability (Zhong et al, ).…”

Section: Resultsmentioning

confidence: 99%

Application of Nano‐Polymer Emulsion for Inhibiting Shale Self‐Imbibition in Water‐Based Drilling Fluids

Qiu

Zhao

et al. 2018

J Surfact & Detergents

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In order to effectively solve shale instability problems in the drilling process, the remarkable capillary effect of shale formations cannot be ignored. In this paper, we report the development and characterization of a nanopolymer emulsion (SDPE) as a shale self-imbibition control agent in water-based drilling fluids. Spontaneous imbibition experiments, surface tension measurements, contact angle measurements, particle size distribution analysis, linear swelling tests, and hot-rolling cuttings dispersion tests were conducted to evaluate the comprehensive performance of SDPE. The results show that the water absorption of shale samples in SDPE emulsions is significantly less than in deionized water. At a concentration of 2.0%, the absorption mass decreased from 7.51 to 2.59%. Reducing the surface tension of the testing fluids, increasing the contact angle of the shale samples, and maintaining the nanoscale size were the important considerations for SDPE to greatly decrease the capillary effect. The low swelling rate and high recovery rate indicate that SDPE also exhibits strong shale hydration inhibition performance. Compared with waterbased drilling fluids without SDPE, drilling fluids with SDPE present higher yield point/plastic viscosity values, and also decrease the filtration loss. Based on our findings, SDPE has the potential to be a good shale self-imbibition control agent and to help mitigate the shale instability problems. KeywordsNano-polymer emulsion Á Water-based drilling fluid Á Shale formation Á Spontaneous imbibition Á Shale hydration inhibition J Surfact Deterg (2018) 21: 155-164. Clay mineral 15 --156 J Surfact Deterg J Surfact Deterg (2018) 21: 155-164 157 J Surfact Deterg J Surfact Deterg (2018) 21: 155-164

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Section: Resultsmentioning

confidence: 99%

Application of Nano‐Polymer Emulsion for Inhibiting Shale Self‐Imbibition in Water‐Based Drilling Fluids

Qiu

Zhao

et al. 2018

J Surfact & Detergents

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“…When the DAM dosage was 3 wt%, the linear expansion rate was 16%. Zhong [17] used 4,4′-methylenebis-cyclohexanamine (MBCA) as shale inhibitor and added to bentonite solution, the linear expansion rate was 10% after 5 h. An [18] added 4 wt% polyethyleneimine (PEI) to montmorillonite solution, and the linear expansion decreases by 73% after 6 h. Comparatively, the linear expansion decreases by 75% after adding 3 wt% APTE for 6 h in this paper.…”

Section: Linear Expansion Experiments Analysismentioning

confidence: 88%

Preparation and evaluation of amine terminated polyether shale inhibitor for water-based drilling fluid

et al. 2018

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Facing the problems of shale hydration, swelling and borehole wall instability in shale gas drilling, a new type of amine terminated polyether (ATPE) shale inhibitor used in water-based drilling fluid is successfully synthesized through the method of leaving group. Using the yield of ATPE as index, orthogonal experiments are designed to determine the optimal reaction conditions. When the mole ratio of polyethylene glycol tosylate (PEG-OTs)/ethylenediamine is 1/3.6, mole ratio of PEG-OTs/triethylamine (acid binding agent) is 1/4, reaction time is 3.5 h and reaction temperature is 60 °C, the yield of ATPE is 91.12%. The structure and molecular weight of polyethylene glycol (PEG-400, a kind of oligomer), PEG-OTs and ATPE are characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy (H 1-NMR) and time of flight mass spectrometer. The characterization results show that the ATPE has a reasonable molecular weight, and the both hydroxyls of PEG-400 have been replaced by ethylenediamine. The inhibition property of ATPE, potassium chloride (KCl), potassium formate (KCOOH), methane-siliconic acid (FMS-1) and polymeric alcohol (JLX-B) are comparatively evaluated through shale rolling dispersion experiment, linear expansion experiment and laser particle size test. The results show that the ATPE has a better shale inhibition property than traditional inhibitors. The drilling fluid system performance evaluation results show that the system has good engineering application value with excellent rheological property, low fluid loss and good shale inhibition property, which guarantee the well-bore stability in shale gas drilling.

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“…Based on evaluation procedure of shale inhibitor in drilling fluid, linear swelling test, hot-rolling recovery test and mud-making test were conducted to evaluate the inhibition performance. 38,39 Furthermore, Mt pellet soaking test was also designed to observe the inhibition performance of various inhibitors intuitively. 22,40 Thus, the prospect of gelatin composites as excellent shale inhibitors can be clearly judged.…”

Section: Inhibition Performance Of Gelatin Compositesmentioning

confidence: 99%

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

Jiang

Zhu

et al. 2019

J of Applied Polymer Sci

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An effective and environmentally friendly shale hydration inhibitor is essential to develop high‐performance water‐based drilling fluid with good environmental properties. For this purpose, and to minimize shale hydration under satisfactory environmental profit, composites of gelatin and inorganic salt (KCl) or organic salt (2, 3‐epoxypropyl‐trimethylammonium chloride, EPTAC) were prepared as environmentally friendly shale inhibitors to perfect the inhibitive effect. The inhibitive properties of the composites were evaluated by comparison with pure gelatin and common inhibitors. Results suggested that when 2.0 wt % gelatin and 1.0 wt % salt were combined, the composites reduced the swelling height of montmorillonite (Mt) to <1.70 mm, improved shale recovery to 80% at 150 °C and inhibited 16.0 wt % Mt mud‐making, thereby displaying excellent inhibition performance. Moreover, the gelatin composite with EPTAC seemed to perform better synergistic inhibition than that with KCl. The underlying inhibitive mechanisms were also investigated by measuring interlayer space through X‐ray diffraction, observing aggregation through electron microscopy, comparing hydrophobic modification degree by water contact angle measurement, and determining the zeta potential and water activity. The gelatin composites presented lower water activity and effectively prevented water from invading Mt. In these composites, gelatin mainly adsorbed on the surface of Mt particles, encapsulated Mt particles, and improved their hydrophobic property to a certain degree, whereas the salts entered the interlayer, expelled water, and decreased the interlayer space. Consequently, the combinations of gelatin and KCl or EPTAC had an excellent effect on inhibiting shale hydration. This study can also provide new insights into the design of totally environmentally friendly additives for water‐based drilling fluid. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47585.

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Study of 4, 4′-methylenebis-cyclohexanamine as a high temperature-resistant shale inhibitor

Cited by 68 publications

References 41 publications

Application of Nano‐Polymer Emulsion for Inhibiting Shale Self‐Imbibition in Water‐Based Drilling Fluids

Application of Nano‐Polymer Emulsion for Inhibiting Shale Self‐Imbibition in Water‐Based Drilling Fluids

Preparation and evaluation of amine terminated polyether shale inhibitor for water-based drilling fluid

Improved shale hydration inhibition with combination of gelatin and KCl or EPTAC, an environmentally friendly inhibitor for water‐based drilling fluids

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