摘要:
A system is provided for the optimization of particle separation in a shaker system of a well drilling system. A well bore is drilled with a rotary drilling system. A stream of drilling fluid is circulated through the rotary drilling system to carry rock particles away from the bottom of the well bore as the well bore is formed. This stream of drilling fluid with the rock particles being carried therein is passed through a shaker system for separating the rock particles from the drilling fluid. A value of at least one, and preferably a plurality of operating parameters of the rotary drilling system are monitored, which parameters correlate to an average size of the rock particles being generated. The shaker system is adjusted in response to these monitored values, and more particularly in response to control signals computed based upon these monitored values, to increase separation of the rock particles by the shaker system.
摘要:
Method and apparatus of inhibiting corrosion of well tubing. A corrosion monitor detects the concentration of a corrosive element in fluid produced from well tubing. Corrosion inhibitor is injected into the tubing by a pump at the depth at which water vapor condenses. A computer is programmed with a formula which generates an optimum concentration of corrosion inhibitor for a given concentration of the corrosive element. The computer is operatively connected to the monitor and receives data therefrom to generate a signal which is used to control the pump speed.
摘要:
A fluid agitating apparatus includes a housing having an inlet at an open lower end thereof, and an outlet at an open upper end thereof, with a flow passage disposed through the housing communicating the inlet and the outlet. The flow passage is preferably circular in cross-section and has a minimum diameter at a throat thereof. The diameter of the flow passage increases continuously from the throat toward both the inlet and the outlet. A vertically upward directed nozzle is located in the flow passage below the throat for inducing flow of fluid from a body of fluid in which the housing is submerged into the inlet and upward through the flow passage. A tangentially directed nozzle is disposed in the flow passage above the throat for inducing a swirling flow in the fluid flowing upward through the flow passage. This creates a swirling vortex type flow exiting the outlet of the housing which provides agitation of the fluid in which the apparatus is submerged.
摘要:
Methods and apparatus are provided for extending the effective length of a jet of fluid exiting a nozzle. An elongated jet extension member extends substantially axially outward from a nozzle outlet, and the jet of fluid flowing along and around the extension member tends to cling to the extension member thus decreasing the angle of divergence of the fluid jet.
摘要:
A drilling sub is provided in a drill string above a drill bit. The drilling sub includes a nozzle oriented to eject drilling fluid from said drill string into an annulus between the drill string and a well bore hole at an elevation above the drill bit with a horizontal velocity component tangential to said annulus to thereby impart a swirling motion to drilling fluid in the annulus. This creates a vortex extending down to the drill bit to enhance the cleaning of cuttings from the bore hole and to reduce a pressure differential thereby increasing a penetration rate of the drill bit.
摘要:
A salt water drilling mud comprising a mixture salt water, a solid phase such as pre-hydrated bentonite, attapulgite, sepiolite, and extended bentonite, among others and optionally a synthetic oil, which is mixed with at least one of five different modules. A first module contains caustic, a natural wax and a natural thinner. A second module contains components of the first module and an alkali metal aluminate prepared by reacting the first module with aluminum metal. A third module contains the components of the first module and an alkali metal phosphate and/or alkali metal silicate. A fourth module contains the components of the first module, a saturated or unsaturated carboxylic acid source, a surfactant, and a preservative. The fifth module contains a combination of the first, third and fourth modules.
摘要:
A drilling fluid contains caustic, a natural wax, a natural thinner, glycerol, phosphoric acid and/or boric acid, and optionally a gel. The drilling fluid can be prepared in modules. Each module contains additional compounds to improve or change the action of the drilling fluid depending on the condition found in the field. The drilling fluid adjusts the properties of conventional drilling muds including increasing lubrication, thins the drilling mud, decreases bit balling, decreases rock resistance and controls phase separation of the drilling muds.
摘要:
A modular drilling mud system is described in terms of five different modules. A first module contains caustic, a natural wax and a natural thinner. A second module contains components of the first module and an alkali metal aluminate prepared by reacting the first module with aluminum metal. A third module contains the components of the first module and an alkali metal phosphate and/or alkali metal silicate. A fourth module contains the components of the first module, a saturated or unsaturated carboxylic acid source, a surfactant, and a preservative. The fifth module contains a combination of the first, third and fourth modules. The third, fourth and fifth modules can be used to effect various degrees of thinning and lubrication, and the second module can be used alone or in combination with another module to thicken the drilling mud.
摘要:
An apparatus for supporting pipe includes a support member defining an inner bowl surface in which is received a plurality of layers of arcuate slip segments. Preferably, the slip segments of each layer are staggered relative to the slip segments of adjacent layers.
摘要:
A coal pellet which disintegrates in the presence of excess heat and comprises coal particles, water soluble binder and water. The binder is first dissolved in water and then coal particles are blended with the aqueous binder solution. The blend is agitated until pellets are formed and then the pellets are coated with a water resistant film. The coal pellets have water entrained therein which is converted to a gaseous form when the pellets are subjected to heat thereby facilitating the heat induced bursting of the pellets to free the coal particles for more efficient burning.