摘要:
The effectiveness of expansive cement systems may be diluted when, during a well cementing operation, commingling takes place between the cement slurry and a spacer fluid, a drilling fluid, or both. Incorporating expansive agents in the spacer fluid or drilling fluid may reduce or negate the loss of expansion at the cement slurry/spacer interface or the cement slurry/drilling fluid interface, thereby promoting zonal isolation throughout the cemented interval.
摘要:
The effectiveness of expansive cement systems may be diluted when, during a well cementing operation, commingling takes place between the cement slurry and a spacer fluid, a drilling fluid, or both. Incorporating expansive agents in the spacer fluid or drilling fluid may reduce or negate the loss of expansion at the cement slurry/spacer interface or the cement slurry/drilling fluid interface, thereby promoting zonal isolation throughout the cemented interval.
摘要:
The invention relates to a process for hydrophobization of concrete or mortar using an alkylketene dimer dispersion and to the concrete or mortar obtainable by the process of the invention. The process allows to achieve effective mass and surface hydrophobization of concrete.
摘要:
Provided is an adhesive composition suitable for fortifying panel joints in construction, the adhesive composition comprising a polymeric binder, filler and thickener, wherein the binder is selected from acrylic acid polymers, acrylic acid copolymers, alkyds, polyurethanes, polyesters, epoxies, and combinations thereof and wherein the viscosity of the composition is the range from 100 to 200 Brabender Units and density is in the range from about 7.5 lbs/gal to about 10 lbs/gal. Methods of using the adhesive composition in wall assembly are provided as well.
摘要:
The invention relates to a process for producing calcium sulphate dihydrate by reacting a water-soluble calcium compound with a water-soluble sulphate compound in the presence of water and a polymer containing acid groups, wherein the polymer containing acid groups comprises specific polyether groups. Additionally disclosed are calcium sulphate dihydrate producible by the process according to the invention, and the use thereof for production of gypsum plasterboard.
摘要:
When conducting cementing operations within confined locales, such as the annular space within a wellbore, it can sometimes be difficult to successfully deliver an uncured cement composition to a desired location. Cementing methods can comprise: providing a cement composition comprising a cement and a property control package, the property control package comprising: a filtration control agent; a friction reducer; and a setting accelerator; introducing the cement composition into a mineral exploration wellbore; and setting the cement composition in the wellbore.
摘要:
A polycondensation product based on aromatics and/or heteroaromatics and aldehydes, the polycondensate containing at least one structural unit (I) having a polyisobutylene side chain and an aromatic or heteroaromatic and at least one structural unit (II) having an ionizable functional group and an aromatic or heteroaromatic, structural unit (I) not being the same as structural unit (II) and the aldehyde used having no acid or ester functions. A process for the preparation and the use as an additive for hydraulic binders are disclosed.
摘要:
In one embodiment, the present invention includes a method for preparing a hydraulic composition including sand in which clay is present, the method including adding to the sand and clay a cationic polymer having a density of cationic charges which is greater than 0.5 meq/g and an intrinsic viscosity which is less than 1 dl/g, said cationic polymer being present in an amount of from 2-20% by weight based on the amount of clay present, said clay present in an amount of from 0.5-5% by weight of the sand present, and water.
摘要翻译:在一个实施方案中,本发明包括制备包含其中存在粘土的砂的水硬性组合物的方法,所述方法包括将具有大于0.5meq / g的阳离子电荷密度的阳离子聚合物加入到所述砂和粘土中,以及 所述阳离子聚合物的存在量相对于存在的粘土的量为2-20重量%,所述粘土以0.5-5重量%的量存在,其特征粘度小于1dl / g 的砂存在和水。
摘要:
In one embodiment, the present invention includes a method for preparing a hydraulic composition including sand in which clay is present, the method including adding to the sand and clay a cationic polymer having a density of cationic charges which is greater than 0.5 meq/g and an intrinsic viscosity which is less than 1 dl/g, said cationic polymer being present in an amount of from 2-20% by weight based on the amount of clay present, said clay present in an amount of from 0.5-5% by weight of the sand present, and water.
摘要翻译:在一个实施方案中,本发明包括制备包含其中存在粘土的砂的水硬性组合物的方法,所述方法包括将具有大于0.5meq / g的阳离子电荷密度的阳离子聚合物加入到所述砂和粘土中,以及 所述阳离子聚合物的存在量相对于存在的粘土的量为2-20重量%,所述粘土以0.5-5重量%的量存在,其特征粘度小于1dl / g 的砂存在和水。
摘要:
This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant.