Baker Hughes Corporation

Samuel Everett Campbell

Vladimir Jovancicevic

Sunder Ramachandran

Paul Hammonds

Steven Jeremy Weghorn

Kenneth J Tacchi

Disclosed is a method for introducing additives into formation fluid from an oil and gas well in or moving through equipment and systems located downstream from the oil and gas well. The method is practiced using pellets having a density sufficient to suspend the pellet at an interface of two phases of fluid within the Downstream Equipment. The pellets are prepared from a pellet matrix, such as an ethoxylated wax, and, optionally, a weighting agent as well as an additive. By varying the amount of weighting agent, the density of the pellet can be varied to suspend it at a desired point for a time sufficient to deliver the additive to the desired point within the Downstream Equipment. The method of the invention may also be used with Refinery Equipment such as a fuel distribution system or a waste water treatment system.

Method for controlled placement of chemicals and composition useful for practicing same

The process involves first taking height measurements of a surface area at a relatively high resolution, such as 0.1 microns over a range of about 100 microns, of a particular surface area of a substrate prior to any corrosive effect on the substrate. This measurement or scan gives a first digital surface map. The substrate is then subjected to a corrosive environment. The same surface area is then measured with the same height resolution to give a second map, where the height of the surface area may be diminished or reduced in local areas or pits characteristic of localized corrosion. The two surface maps are subtracted to give a measurement of the extent of localized corrosion. The two surface maps may be subtracted electronically or digitally. This method may be accomplished over a relatively short time period, e.g. hours, as compared with conventional corrosion evaluation techniques.

High resolution statistical analysis of localized corrosion by direct measurement

Aluminum carboxylate drag reducing agents are described herein. These materials are useful to reduce drag in hydrocarbon fluids and multiphase fluids of hydrocarbon(s) and water. No injection probes or other special equipment is expected to be required to introduce the drag reducing agent into the liquid stream. The drag reducing additives of the invention are not subject to shear degradation and do not cause undesirable changes in the emulsion or fluid quality of the fluid being treated, or undesirable foaming. In one non-limiting embodiment, an aluminum monocarboxylate is reacted with at least one carboxylic acid in situ. In another non-limiting embodiment, the aluminum carboxylate is introduced as a dispersion in a solvent such as paraffin oil. The drag reducing additives include aluminum dicarboxylates such as aluminum dioctoate, aluminum distearate, aluminum octoateoleate, aluminum octoatestearate, aluminum stearateoleate, hydroxyaluminum bis(2-ethylhexanoate) and mixtures thereof.

Aluminum carboxylate drag reducers for hydrocarbon emulsions

Disclosed is a method for introducing additives into an oil, gas, or water injection well or pipeline in solid form at a location other than at the bottom. The method is practiced using pellets having a density sufficient to suspend the pellet at a top phase, bottom phase or at the interface of two phases of fluid within a wellbore. The pellets are prepared from a pellet matrix, such as an ethoxylated wax, and a weighting agent as well as an additive. By varying the amount of weighting agent, the density of the pellet can be varied to suspend it at a desired point to for a time sufficient to deliver the additive to the desired point within the wellbore.

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Richmond, TX, United States of America

Samuel Everett Campbell