Gifts, Handicrafts & Artifacts #4607790

The Wellcare Reverse Circulating Junk Basket (WCRCB) is a junk retrieval tool designed to remove all types of objects from the bottom of the well bore. This superior tool removes such items as slips, hand tools, bit cones, and any other small pieces of junk from the well. The WCRCB uses reverse circulation to aid junk recovery.

Construction : The tool consists of a top sub, barrel assembly, catcher, and shoe. The barrel assembly consists of an inner and outer barrel, valve seat, cup, and ball. A liftsub is also provided t o assist in handling.

Assembly and Operation : Make up the junk basket to the bottom of the string and run into the hole. When the tool is approximately 10 feet from the bottom of the hole, the ball is dropped down the drill pipe. The ball will position itself in the ball seat and reverse circulation will begin. Circulate and begin coring. Combined with the reverse circulation, this guarantees that any junk on the bottom is pumped into the barrel and caught by the catcher assembly. The tool is removed from the hole after cutting 10 to 20 inches of core.

Optional Components and Accessories : Shoes Four types of shoes are available to fit the Reverse Circulating Junk Basket. Type A mill shoe is supplied as standard equipment with the cutting teeth dressed with hard metal and has side wings. The type A mill shoe is used where the formation is relatively soft and the fish is a loose piece. Type B mill shoe is equal in design to the type A shoe, however, it is hard faced with Wellcare lay a sintered tungsten carbide in an extremely tough matrix which will effectively and rapidly mill up junk during the fishing operation. This shoe will cut on OD, ID and bottom. Type C mill shoe is also hard faced with Wellcare lay, however, is designed with a flat bottom, and the Wellcare lay is placed on the inner face and theouter face. This design is used to mill up junk and is extremely effective for cutting cores. Type B or type C Wellcare lay dressed milling shoes are used if the formation is hard or if the fish is embedded in the formation. Use of these two designs also cuts away protruding excess metal to allow free entry of thejunk into the basket.

Finger Shoe : For retrieving loose junk on the bottom of the hole which may exceed the maximum catch of the WCRCB can be retrieved by use of a finger shoe assembly. The assembly consists of a shoe extension and the finger replacement. The entire assembly is used in place of a mill shoe. The fingers are designed to close in beneath the fish when slowly lowered during rotation. Finger replacements can be replaced easily and are very inexpensive.

Magnet Inserts : The WC RCB can be easily converted to a fishing magnet by removing the catcher assembly and replacing it with a magnet insert. The insert still allows direct or reverse circulation and can be used with A, B or C type shoes, or special shoes designed to customer specifications. The magnet insert is the same design as the Wellcare Fishing Magnet and by adding a top sub to the magnet insert; it can be used independently as a fishing magnet.

Available in the size range 4 to 20, this device consists of slip-on style made of high strength, flexible steel bows mounted on steel slip-on end collars with metal petals spot welded to one end of the collar. Bows are hardened and tempered for maximum strength and uniformity.

Performance:

Aids in premature cement hydration to help reduce hydrostatic fluid column above a loss zone or weak formation

Works similar in cementing applications like a coffee filter does in catching particles to form a bridge in the annulus to prevent cement from falling back Applications

Used in most types of well designs

May be used in cased hole and openhole applications

The metal petals are convex shape for added strength and durability and afford great adaptability to expansion and contraction.

Available in the size range 4 to 20, this device consists of flexible steel spring bows welded to Hinged collars. Bows are hardened and tempered for maximum strength and uniformity. It is run on casing or liners above weak or porous formations to provide protection from hydrostatic pressure generated by the cement column. Its overlapping metal fins provide flexibility and fluid passage while maintaining optimum support characteristics.

This is an accessory to be used in milling or drilling operations. It is designed to prevent cuttings that are too heavy to be circulated from settling to the bottom of the hole. End connection are furnished as per customerrequirement.

Construction : Boot baskets are manufactured from high-strength heat treated alloy steel to withstand wear. Heavy-duty ribs are attached to the cup to prevent it from being crushed and to guide the tool through tight places while tripping out of the hole. These ribs are not welded to the main body of the tool, further enhancing its strength.

Assembly and Operation : Boot baskets are used directly above the mill or drill bit. On severe milling jobs, it is customary to run two or three baskets in tandem above the mill. This tandem running not only increases the capacity to remove the cuttings, but also provides extra stabilization for the mill. Boot baskets can be run in either open hole or inside casing. When the basket is working inside a casing, hard faced pads, dressed to the same O.D. as the mill or bit, should be used.

Optional Components and Accessories : The standard boot basket is a welded assembly with a 10 inch deep cup. Long and extra long baskets are available; these provide a 20 or 30 inch deep cup.

The Wellcare Core-Type Junk Basket is a junk retrieval tool designed to retrieve all types of objects from the bottom of the well bore. This easy-to-use tool removes such items as slips, hand tools, and bit cones. The basic assembly consists of a top sub, barrel, type A mill shoe, upper and lower catchers.

Assembly and Operation : Make up the core basket to the bottom of the string and run it in the hole to a point several feet from the bottom. With direct circulation, the coring action on the junk proceeds until a 24 inch core is cut. The fingers in the upper catcher break the core when an upward strain is applied to the string. The lower catcher fingers then form a close-fitting basket that traps the core with its retrieved junk. As in the other junk basket designs, they are free to revolve within the shoe, thus eliminating finger breakage.

Optional Components and Accessories : Three types of milling shoes are available for all core-type basket systems : Type A shoe with side wings, Type B shoe with hard-faced Wellcare lay sintered tungsten carbide, and Type C shoe with flat bottom and Wellcare lay on the inner and outer faces.

Magnet Inserts : A magnet insert can be used in place of the catcher assemblies, thus converting the tool to a fishing magnet.

Finger Shoe : A finger shoe is used to retrieve junk that may be too large to enter the catchers.

The Cementing Basket is designed to run on the casing string or liner to support a cement column to prevent contamination of a lower zone or to keep hydrostatic head of a column from breaking down a weak formation. The Basket consists of flexible steel springs that support overlapping rubber liners. The Basket is placed on the casing with movement limited by pipe couplings or by welding the ring of the basket directly to the casing. Stop rings may also be used to selectively space the Baskets between Collars without welding.