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Preparation and application of melamine cross-linked poly ammonium as shale inhibitor

In this paper, a series of poly ammonium shale inhibitors were prepared from diethylamine, epichlorohydrin, and melamine (DEM) and their inhibition to shale were evaluated by bentonite linear expansion test, anti-swelling experiments, and mud ball experiments. Additionally, other properties of drilling fluid treated by poly ammonium were evaluated. Anti-swelling results showed...

Development of tartaric esters as bifunctional additives of methanol-gasoline

tartaric is the most effective one. Competing interests The authors declare that they have no competing interests. Authors’ contributions Jie Zhang carried out the synthesis of tartaric esters, and

Synthesis and application of polyaminoamide as new paraffin inhibitor from vegetable oil

Gang Chen 0 Ying Tang 0 Jie Zhang 0 0 College of Chemistry and Chemical Engineering, Xi'an Shiyou University , Xi'an Shaanxi, 710065, China In this work, a series of novel paraffin inhibitor

A novel model mouth system for evaluation of In Vitrorelease of nicotine from moist snuff

Background Pouch moist snuff, as a form of oral smokeless tobacco products, is becoming increasingly popular in North America, Scandinavia (where it is known as Snus), South Asia and parts of Africa. User usually places a pouch between the upper jaw and cheek to obtain euphoria from tobacco, leading to partial intake of tobacco constituents. To evaluate user exposure to tobacco...

Investigation of DiospyrosKaki L.f husk extracts as corrosion inhibitors and bactericide in oil field

Background Hydrochloric acid is used in oil-well acidizing commonly for improving the crude oil production of the low-permeable reservoirs, while it is a great challenge for the metal instruments involved in the acidification. Developing natural products as oilfield chemicals is a straight way to find less expensive, green and eco-friendly materials. The great plant resources in...

Investigation of ginkgo biloba leave extracts as corrosion and Oil field microorganism inhibitors

Jie Zhang 0 2 0 College of Chemistry and Chemical Engineering, Xi'an Shiyou University , Xi'an Shaanxi 710065 , People's Republic of China 1 Shannxi Hai'an Industry Co., LTD , Xi'an 710065 , People's

New bactericide derived from Isatin for treating oilfield reinjection water

Isatin, an extract from Strobilanthes cusia (Nees) Kuntze, was the base for synthesizing derivatives that were screened for antibacterial activity against oilfield water-borne bacteria. The bacterial groups are sulfate reducing, iron and total. The derivatives were characterized by spectrums and they showed good to moderate activity against sulfate reducing bacteria.