INVERT EMULSION BASED DRILLING FLUID AND METHODS OF USING SAME

    公开(公告)号:US20180223166A1

    公开(公告)日:2018-08-09

    申请号:US15612397

    申请日:2017-06-02

    Abstract: A drilling fluid composition which includes a base fluid, one or more additives, and a viscosifier package. The base fluid is an invert emulsion comprising oil and water. Further, the one or more additives is chosen from an emulsifier, a weighting material, a fluid-loss control additive, or an alkaline compound. The viscosifier package includes a fatty acid having 6 or more carbon atoms and an aliphatic polyester. The drilling fluid composition has a yield point of from 30 lbf/100 ft2 to 100 lbf/100 ft2 and a low shear yield point of from 10 lbf/100 ft2 to 40 lbf/100 ft2. The associated method of drilling a subterranean well including operating a drill in a wellbore in the presence of the drilling fluid composition is also provided.

    EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

    公开(公告)号:US20180223164A1

    公开(公告)日:2018-08-09

    申请号:US15496794

    申请日:2017-04-25

    Abstract: Drilling fluids and methods of making and using drilling fluids are provided. The drilling fluid contains an aqueous phase, an oleaginous phase, and at least one surfactant having the formula R—(OC2H4)x—OH, where R is a hydrocarbyl group having from 8 to 20 carbon atoms and x is an integer from 1 to 10. Methods of producing drilling fluids include mixing an aqueous phase, an oleaginous phase, and at least one surfactant, and shearing the mixture. Methods of using drilling fluids to drill subterranean formations include mixing an aqueous phase, an oleaginous phase, and at least one surfactant to produce a mixture, which is sheared to form a drilling fluid, and pumped through a drill string in a drill bit located in a subterranean formation. Rock cuttings are transported from the drill bit to a surface of the subterranean formation and the drilling fluid is circulated in the subterranean formation.

    CEMENT SLURRIES, CURED CEMENT AND METHODS OF MAKING AND USE THEREOF

    公开(公告)号:US20180222797A1

    公开(公告)日:2018-08-09

    申请号:US15628892

    申请日:2017-06-21

    Abstract: 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—(OC2H4)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—(OC2H4)x—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10.

Patent Agency Ranking