Portable drilling mud system
First Claim
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1. A portable drilling mud circulation and storage unit comprising:
- a wheeled undercarriage including frame means;
a mud storage tank supported on said frame means;
a circulating pump disposed on said frame means, said pump including an inlet conduit connected to said tank for withdrawing mud from said tank, a discharge conduit connected to said pump and including a first conduit portion adapted to be connected to a well circulation system, and a second conduit portion of said discharge conduit connected to said tank for recirculating mud back to said tank;
valve means in said first and second conduit portions for selectively controlling the flow of mud therethrough;
mud circulation nozzle means disposed in said tank and connected to said second conduit portion for discharging a jet stream of mud into said tank for agitating mud stored in said tank;
said second conduit portion including a vertically extending end part terminating adjacent a bottom wall of said tank and having said nozzle means projecting substantially horizontally therefrom; and
a mud blending unit including means interposed in a branch conduit connected to said second conduit portion for injecting additives into mud being circulated to said tank, said branch conduit having an outlet end for discharging mud mixed with additives into said tank for being mixed with mud agitated by said nozzle means.
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Accused Products
Abstract
A portable well drilling mud storage and recirculation unit includes a mud storage tank mounted on an over-the-road semi-trailer having an engine driven circulating pump mounted onboard and adapted to withdraw mud from the tank for circulation to the well and for recirculation through a set of mud agitating nozzles disposed in the bottom of the tank. A mud degassing vessel, a solids separator unit and an additive blending unit are all mounted above the tank. The degassing vessel is supported by hydraulic cylinder actuators for movement between a retracted transport position and a vertically elevated working position.
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Citations
13 Claims
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1. A portable drilling mud circulation and storage unit comprising:
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a wheeled undercarriage including frame means; a mud storage tank supported on said frame means; a circulating pump disposed on said frame means, said pump including an inlet conduit connected to said tank for withdrawing mud from said tank, a discharge conduit connected to said pump and including a first conduit portion adapted to be connected to a well circulation system, and a second conduit portion of said discharge conduit connected to said tank for recirculating mud back to said tank; valve means in said first and second conduit portions for selectively controlling the flow of mud therethrough; mud circulation nozzle means disposed in said tank and connected to said second conduit portion for discharging a jet stream of mud into said tank for agitating mud stored in said tank; said second conduit portion including a vertically extending end part terminating adjacent a bottom wall of said tank and having said nozzle means projecting substantially horizontally therefrom; and a mud blending unit including means interposed in a branch conduit connected to said second conduit portion for injecting additives into mud being circulated to said tank, said branch conduit having an outlet end for discharging mud mixed with additives into said tank for being mixed with mud agitated by said nozzle means. - View Dependent Claims (2, 3, 4, 5)
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6. A portable drilling mud circulation and storage unit comprising:
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a wheeled undercarriage including frame means; a mud storage tank including opposed sidewalls, opposed end walls and a bottom wall, said tank being supported on said frame means; a circulating pump disposed on said frame means, said pump including an inlet conduit connected to said tank for withdrawing mud from said tank, a discharge conduit connected to said pump and including a first conduit portion adapted to be connected to a well circulation system, and a second conduit portion connected to said tank for recirculating mud back to said tank; valve means in said first and second conduit portions for selectively controlling the flow of mud therethrough; mud circulation nozzle means disposed in said tank and connected to said second conduit portion for discharging a jet stream of mud into said tank for agitating mud stored in said tank; said second conduit portion including an elongated tubular frame member extending along the top of one of said sidewalls of said tank and forming a part of said frame means of said tank, and a vertically extending end part of said second conduit portion terminating adjacent said bottom wall of said tank and having said nozzle means projecting substantially horizontally therefrom.
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7. A portable drilling mud circulation and storage unit comprising:
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a wheeled undercarriage adapted for over the road transport and including frame means for supporting a mud storage tank, said tank including means forming a bottom wall, side walls and end walls, an inlet conduit for receiving mud, discharge means for discharging cleaned mud to said tank, and a suction conduit in communication with said tank for withdrawing cleaned mud from said tank for recirculation through a well, support means on said tank for supporting a degassing vessel connected to said inlet conduit, and a conduit interconnecting said degassing vessel and said discharge means for conducting degassed mud to said tank; said degassing vessel comprising an elongated upstanding tower mounted on said tank and connected to means for moving said degassing vessel between a vertically extended working position extending above said tank and a vertically retracted transport position at least partially in said tank wherein said degassing vessel is disposed to provide clearance of overhead road obstructions during transport of said circulation and storage unit. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification