Precipitated Particles and Wellbore Fluids and Methods Relating Thereto
a wellbore fluid and precipitation technology, applied in the direction of wellbore/well accessories, drilling pipes, drilling rods, etc., can solve the problems of limited ability to tailor the average particle size and particle size distribution limited ability to tailor the shape and morphology of the weighting agent particles, and the grinding process. no
Inactive Publication Date: 2014-07-31
HALLIBURTON ENERGY SERVICES INC
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Benefits of technology
The present invention relates to precipitated particles and wellbore fluids, and methods related thereto. The invention provides a wellbore drilling assembly that includes a pump and a wellbore fluid with precipitated particles having a specific shape. The wellbore fluid has a density of about 7 ppg to about 50 ppg and includes a base fluid and a plurality of precipitated particles. The assembly can be used in wellbore drilling operations. The technical effects of the invention include improved wellbore stability, reduced fluid loss, and improved wellbore cleaning.
Problems solved by technology
However, the grinding process used to produce weighting agents provides little tailorability in terms of particle characteristics.
However, this provides limited ability to tailor the average particle size and particle size distribution of the weighting agent particles.
Moreover, the grind process offers no ability to tailor the shape and morphology of the weighting agent particles.
Method used
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[0014]The present invention relates to precipitated particles and wellbore fluids and methods relating thereto.
[0015]The present invention provides for, in some embodiments, precipitated particles that can be used in subterranean applications as unique weighting agents. Precipitated particle characteristics like shape and particle size distribution may, in some embodiments, be tailored during precipitation synthesis, for example, through pH and / or temperature. Further, precipitation as a synthesis method may allow for unique shapes and narrow particle size distributions that can be exploited so as to achieve desired properties and capabilities in the corresponding wellbore fluids (e.g., density, viscosity, and sag control). For example, discus or platelet shaped precipitated particles may increase the viscosity of a wellbore fluid and settle in the wellbore fluid at a slower rate, thereby yielding a viscosified fluid with less sag.
[0016]The ability to tailor the properties and capab...
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Precipitated mineral particles may provide for wellbore fluids with tailorable properties and capabilities. Such wellbore fluids may be included as a portion of a wellbore drilling assembly that includes a pump in fluid communication with a wellbore via a feed pipe; and a wellbore fluid disposed in at least one selected from the group consisting of the pump, the feed pipe, the wellbore, and any combination thereof, wherein the wellbore fluid has a density of about 7 ppg to about 50 ppg and comprises a base fluid and a plurality of precipitated particles having a shape selected from the group consisting of ovular, substantially ovular, discus, platelet, flake, toroidal, dendritic, acicular, spiked with a substantially spherical or ovular shape, spiked with a discus or platelet shape, rod-like, fibrous, polygonal, faceted, star-shaped, and any hybrid thereof.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation-in-part of and claims priority to U.S. patent application Ser. No. 13 / 752,697 filed on Jan. 29, 2013, entitled “Precipitated Particles and Wellbore Fluids and Methods Relating Thereto,” the entire disclosure of which is incorporated herein by reference.BACKGROUND[0002]The present invention relates to precipitated particles and wellbore fluids and methods relating thereto.[0003]In the exploration and recovery of hydrocarbons from subterranean formations, a variety of wellbore operations are performed, e.g., drilling operations, cementing operations, and stimulation operations. One physical property of the wellbore fluids used in conjunction with these wellbore operations is density. For example during drilling operations, the density of a wellbore fluid must be carefully controlled so as to exert sufficient pressure to stabilize the walls of the wellbore, e.g., to prevent blowouts, while simultaneo...
Claims
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Login to View More IPC IPC(8): E21B21/00
CPCE21B21/00E21B43/267E21B21/003C09K8/03C09K8/032E21B21/06E21B21/01
Inventor JAMISON, DALE E.LANDIS, CHARLESDEVILLE, JAYMCDANIEL, CATO
Owner HALLIBURTON ENERGY SERVICES INC