wireline overshot supplier

PEERCHEER offers T6S-101 double tube conventional wireline overshot for core barrel drilling for use with CR50/NW/NWJ/NWY rods. T6S-101 core barrel is a standard wall all round core barrel for applications as soil sampling and site investigation in very loose, unconsolidated formations. T6S-101 core barrel uses core lifter cases and bits designed to direct the drilling fluid through the bit blank(FD face discharge) instead of through the bit throat. This is done to return undisturbed samples and prevent sample washing. T6S-101 core barrel split inner tube offers features as easy and increased core recovery and a larger core size in comparison to equivalent hole size with triple tube. T6S-101 core barrel is a sturdy core barrel and can very well be used with high viscous mud flushing or in special cases with air flushing. T6S-101 core barrel is available for application in metric 101mm size hole. T6S-101 core barrel consists of the T6S-101 head assembly , T6S-101 inner tube components and T6S-101 outer tube components.

Overshot is a necessary device in wireline drilling. It"s dropped on a cable and directly couples onto and lift up the inner tube assembly, eliminating the need to couple and uncouple the rod string each time the core is retrieved.

Ezy Lock Overshot is a modified product based on compact overshot. It protects against accidental release of the core barrel. This is ideal for suface application when hoisting above ground. Q series overhshot are available in A, B, N, H and P size.

As a professional manufacturer of BQ NQ HQ PQ SQ series overshot assembly in China, we still provide customers worldwide with China overshot assembly, hoisting plug, foot clamp, circle wrench, etc.

1. Drill rod: BQ NQ HQ PQ SQ and AW, BW, NW, HW, BTW, NTWCasing tube: BW, NW, HW, HWT2. Core barrel: BQ NQ HQ PQ & head assembly and core barrel assembly3. BQ NQ HQ PQ , BTW, NTW, HTW etc. Diamond core bit, reaming shell & shoe bit (Imp. and surface-set, PDC) , oversize supplied4. Drill tool: hoisting plug, water swivel, overshot, outer tube & inner tube wrench, foot clamp,etc.

Wireline series: Geobor S, WLA, WLB, WLN, WLH, WLP, WLB3, WLN3, WLH3, WLP3, WLN2, AQ, BQ, NQ, HQ, PQ, SQ, PQ3, HQ3, NQ3, BQ3, NQ2, WL-56, WL-66, WL-76

The Wireline Releasable Overshot is a slip type overshot used to retrieve a fish lost in the well bore that does not have a conventional fishing neck.

Once latched onto a fish the overshot can be released by jarring downwards provided the overshot has a solid footing upon which the core can be driven against.

The Wireline Releasable Overshot is composed of the top sub, cylinder, nut, main spring, mandrel, auxiliary spring, adapter sleeve, slips etc., simple structure,easy to use.

Boart Longyear’s overshots are an integral part of the Q™ Wireline system. Once the inner-tube is full of core, the overshot is lowered (or pumped-in for an inclined-hole) to the bottom of the hole. Its heavy-duty lifting dogs grab a secure hold at the top of the inner-tube assembly.

For maximum productivity in underground or pump-in applications, the Quick Pump-In™ Overshot provides significantly improved pump-in rates with dual pump-in lip-seals; as well as new ‘V-Lip’ pump-in seals in NQ™ and HQ™ sizes. The variable profile of the ‘V-Lip’ seal provides improved performance and accommodates both standard wall and W-Wall™ drill rods when used with the new Roller Latch™ underground head assembly.

In addition, this overshot incorporates the proven Boart Longyear™ “Landing Indicator” ball and bushing. The ball and bushing provide a pump-in valve, a bypass valve, and a landing indicator pressure signal.

Wireline Overshot Assembly slides inside the wireline drill rods. Lifting dogs of the overshot locks the spear head of the core barrel. Overshot along with inner tube is pulled out with steel wire rope.

An OVERSHOT is attached to the end of a wireline and lowered into the outer tube. The Overshot then locks on to the Latch Head Assembly at the top of the core barrel.

The inner tube is then pulled to the surface with the core sample inside. Givens International offers an overshot for a spear point or quad latch head.

Overshot is one of the necessary equipment for wireline drilling which could be put into the hole. This fishing tool is used to connect with the inner tube assembly and lift it up. Overshot is attached to drill rod and lowered over the pipe or stuck in the borehole. Hardened and self-cutting threads inside overshot firmly grasp the pipe, allowing the fish (such as inner tube and core) to be pulled from the hole.

5.The rotary overshot is a non-releasable tool and should normally be run below a safety joint in order to have positive release mechanism from the fish.

CDG’S overshot is an external catch fishing tool designed to catch the inner tube and core from the hole. Once the inner tube of a wireline core barrel is full of core sample, overshot is released from the top. Wireline overshot assembly slides inside the wireline drill rods and locks the spear head of core barrel. Along with inner tube, it is pulled out with steel wire rope.

China Drilling Geological Equipment Ltd. is a professional manufacturer of drilling tools. Main products cover impregnated synthetic diamond core bits, surface-set diamond bits, PDC core and noncoring bits, rod shoes & casing shoes, reaming shells, drill rods, core barrels, fishing tools (like overshots or wireline overshot assembly), water swivels, hoisting plugs, casing cutter assembly, adapter subs, wrenches, recovery tools and foot clamps. 80% of our products are sold abroad.

Overshot is a necessary device in wireline drilling. It"s dropped on a cable and directly couples onto and lift up the inner tube assembly, eliminating the need to couple and uncouple the rod string each time the core is retrieved.

Ezy Lock Overshot is a modified product based on compact overshot. It protects against accidental release of the core barrel. This is ideal for suface application when hoisting above ground.

Overshot is a key component of wire-line coring systems. To retrieve the core sample, the overshot is lowered into the hole on a wire cable until it comes in contact with the spearhead point on the head assembly. Positive latching lifting dogs securely attach, and the inner tube assembly is pulled from the hole to retrieve the core.

PARVEEN Self-Releasing Overshot are used to fish wireline tools that have no fishing neck as well as damaged wireline tools and sucker rods that cannot be fished with a magnet.The tool is operated by applying the weight of the tool string on to the fish, which engages the fish. The harder the operator pulls on the overshot, the tighter the grip of the slips on the tool to be fished becomes. Should it proves impossible to free the jammed tool, a safety device permits the overshot to be released by jarring down. Once the overshot has been recovered, it is possible to change the size of the line to obtain a stronger jarring effect.

Using a wireline system, core is recovered quickly by retrieving the inner tube directly through the drill string. The rods remain in the hole until the bit needs to be replaced. This has big cost advantages when drilling deep holes for mineral exploration.

Standard Wireline Double tube Core Barrels are ideal for use in most of the drilling conditions and are available for application in standard hole sizes (BWL, NWL, HWL and PWL).

Wireline Triple tube Core Barrels enable integral core recovery when drilling coal, clay bearing or highly fractured formations. The split tube retains the core sample in its received state for easier loading into sample trays or for storage and subsequent presentation to the geologist. The Triple tube Core Barrels is available in N, H and P sizes.