Abstract: A methodology and system promote hydrocarbon production from a reservoir using steam assisted gravity drainage. The technique comprises deploying sensors in a subsurface environment containing the reservoir. The sensors are used to obtain data on properties related to a steam assisted gravity drainage region of the reservoir. Based on the data collected from the sensors, the amount of steam injected into areas of the reservoir may be adjusted to facilitate, e.g., optimize, production of hydrocarbons.

Abstract: A methodology and system promote hydrocarbon production from a reservoir using steam assisted gravity drainage. The technique comprises deploying sensors in a subsurface environment containing the reservoir. The sensors are used to obtain data on properties related to a steam assisted gravity drainage region of the reservoir. Based on the data collected from the sensors, the amount of steam injected into areas of the reservoir may be adjusted to facilitate, e.g., optimize, production of hydrocarbons.

Abstract: A tool useful for measuring the shortest distance from a point in space to an imaginary line having any inclination and in the same vertical plane as the point. An embodiment requires a form of contact with only a single point on the line, uses an inclinometer, may use a length measuring system, and performs a trigonometric calculation to report data related to the shortest distance. Variants include integration of an inclinometer with a form of length measurement device. One embodiment integrates a manually powered excavation, fill and/or grading implement such as a shovel with an inclinometer attached to or imbedded in the shovel handle. Trigonometric functions of incline angles and length measurements report data related to the shortest distance in general, and in particular to ongoing depth of manual excavations, cuts or fills relative to a desired slope or grade.

Abstract: A method for inhibiting corrosion in an aqueous system is described which comprises adding to the system a corrosion inhibiting metal salt capable of forming a passivating film of a water insoluble salt of said metal at the cathode, and a substantially linear cationic polymer.

Abstract: Method of dispersing particulate matter, e.g., sludge, in water comprising adding thereto a copolymer, preferably methacrylic acid and acrylamide in a 1:1 mole ratio.

Abstract: Sludge is dispersed in cooling water systems by means of a combination of 2-phosphonobutane-1,2,4-tricarboxylic acid and a water soluble organic polymer possessing carboxylic and sulfonate groups.