Tool for recovering junk and debris from a wellbore of a well

A wellbore cleanout tool for recovering objects and debris from a wellbore hole having a casing, which comprises:

• a) an elongated generally cylindrical body member having an inner wall surface and defining an inner space for reception of objects to be recovered from a wellbore of the well, said body member having a generally inwardly and upwardly tapered outer wall portion at an upper end thereof, said tapered outer wall portion having a plurality of upwardly directed open ports extending therethrough and communicating with said inner space;
• b) an elongated tubular member defining a generally longitudinal axis, said elongated tubular body member being positioned inside said elongated generally cylindrical body member and threadedly attached thereto, said elongated tubular member extending below a lower end of said generally cylindrical body member, and having a diameter less than an inner diameter of said generally cylindrical body member so as to define an annular space therebetween, said elongated tubular member having a plug at the lowermost end to prevent flow thereby, said elongated tubular member being adapted to receive hydraulic power or pressurized circulating flushing liquid at an upper end, said elongated tubular member further having a plurality of generally upwardly extending jet nozzles adjacent said lowermost closed end and extending through a wall portion of said elongated tubular member, said jet nozzles each being oriented at a generally acute angle relative to said longitudinal axis, said nozzles for directing the flushing liquid at relatively higher velocity radially outwardly and upwardly of said elongated tubular member toward said annular space between said generally cylindrical body member and said inner elongated tubular member, to thereby direct objects and debris from the wellbore into said annular space;
• c) a multiple-section gate positioned within said elongated generally cylindrical body member and attached to an inner wall surface of said generally cylindrical body member adjacent a lower end thereof, each said section of said gate being biased by a spring device to pivot inwardly and downwardly toward generally radial positions which blocks the lower end of said generally cylindrical body member, each said gate section being capable of upward pivotal movement by force provided by the upward movement of the flushing liquid when exiting said jet nozzles in said elongated tubular member and being directed toward said gate in said generally cylindrical body member;
• d) means positioned adjacent said open ports in said tapered wall portion at the upper end of said generally cylindrical body member to filter the upwardly directed liquid to separate debris and other objects therefrom prior to the liquid exiting said generally cylindrical body member through said apertures in said upper tapered wall portion of said generally cylindrical body member;
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• e) a plurality of magnets attached to the inner surface of said elongated generally cylindrical body member to attract magnetically attractable objects and debris.

A method of removing junks or debris from a high angle section of a cased hole of a wellbore of a well utilizing a wellbore cleanout tool for recovering objects and debris from the wellbore operative from a rig having a floor, said cleanout tool comprising an elongated generally cylindrical body member which defines an inner space for reception of objects to be recovered from a wellbore of the well, said generally cylindrical body member having a generally inwardly tapered outer wall portion at the upper end thereof, said tapered outer wall portion having a plurality of upwardly directed apertures extending therethrough, an elongated tubular member defining a generally longitudinal axis, said elongated tubular body member being positioned inside said elongated generally cylindrical body member and attached thereto, said elongated tubular member extending below a lowermost closed end of said generally cylindrical body member, and having a diameter less than an inner diameter of said generally cylindrical body member so as to define an annular space therebetween, said elongated tubular member having a closed lowermost end, and being adapted to receive pressurized flushing liquid at an upper end, said elongated tubular member further having a plurality of generally upwardly extending apertures adjacent said lowermost closed end and extending through a wall of said tubular member, said apertures being oriented at a generally acute angle relative to said longitudinal axis, said apertures for directing the flushing liquid radially outwardly and upwardly of said elongated tubular member toward said annular space between said generally cylindrical body member and said inner elongated tubular member, to thereby direct objects and debris from the wellbore into said annular space, a multiple-section gate positioned within said elongated generally cylindrical body member and attached to an inner wall of said generally cylindrical body member adjacent the lower end thereof, each said section of said gate being spring biased to pivot inwardly and downwardly toward generally radial positions which blocks the lower end of said generally cylindrical body member, each said gate section being capable of upward pivotal movement by force provided by the upward movement of the flushing liquid when exiting said apertures in said elongated tubular member and being directed toward said gate in said generally cylindrical body member, and means positioned adjacent said apertures in said tapered wall portion at the upper end of said generally cylindrical body member to filter the upwardly directed liquid to separate debris and other objects therefrom prior to the liquid exiting said generally cylindrical body member through said apertures in said upper tapered wall portion of said generally cylindrical body member, said method comprising the steps of:

• a) starting a pump to cause fluid to flow into said elongated tubular member;
• b) feeling the junks, as indicated by a drop of weight indicator at the rig floor;
• c) washing down the cased hole;
• d) reaming down the cased hole;
• e) back reaming the cased hole;
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• f) pulling back said tool while the pump is operative;
• g) flushing junks into said inner space of said elongated generally cylindrical body member provided for reception of objects;
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• h) repeating steps b) through g) until the high angle section is free of obstruction.