US 2018/0282216 A1

Dispersant in cement formulations for oil and gas wells

(22) 07.06.2018

(45) 04.10.2018

(57) Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved rheology, such as improved flowability and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry contains water, a cement precursor material and a surfactant having the formula R–(0C2I-14)x–OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. The cured cement have improved strength and density properties due to reduced fluid loss and even placement during curing. The cured cement contains a surfactant having the formula R–(0C2I-14)x–OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10.

(71) Saudi Arabian Oil Company, Dhahran (SA)

(73) Saudi Arabian Oil Company, Dhahran (SA)

x

Related articles:

Issue 2019-4 WO2019026674 (A1)

Cement admixture, cement composition and production method therefor

(22) 23.07.2018 (43) 07.02.2019 (57) Provided are a cement admixture and a cement composition, which, in a cement concrete cured body, have excellent anti-rust effects on an internal rebar, have...

more
Issue 2018-11 WO 2018/147909 A1

Early strength enhancement of cements

(22) 25.10.2017 (43) 16.08.2018 (57) A method of making a cement composition, comprising grinding a cement clinker and a strength-enhancing agent, thereby producing a hydraulic cementitious powder,...

more
Issue 2020-1-2 US2019345064 (A1)

Methods for producing air-cured fiber cement products

(22) 05.10.2017 (43) 14.11.2019 (57) The present invention relates to methods for the production of air-cured fiber cement products. More particularly, the present invention provides methods for the...

more
Issue 2019-1-2 US 2018/0290924 A1

Pozzolanic cementitious materials and methods of making same

(22) 02.05.2018 (45) 11.10.2018 (57) A method for accelerating the strength of cement involves providing an activated fly ash processed to increase the surface area of the fly ash and reacting the...

more
Issue 2019-7-8 US 2019/0135699 A1

Compositions and methods for controlling setting of carbonatable calcium silicate cements containing hydrating materials

(22) 21.12.2018 (43) 09.05.2019 (57) The invention provides compositions and methods for controlling setting of carbonatable calcium silicate compositions that are contaminated with hydrating...

more