Translation of "Downhole tools" in German

For HDD projects, various combinations of Herrenknecht's newly developed downhole tools are possible.

The results of successful pilot projects have already confirmed the concept and the performance of the new downhole tools.

On land and offshore, the Inconel, Incoloy and Monel alloys are used for applications ranging from downhole tubulars and tools, through well-head hardware and processing equipment, to flare booms.

The new downhole tools from Herrenknecht thus offer drilling companies the potential to improve the efficiency of their HDD projects significantly.

China Vigor manufacture and develop the downhole drilling tools,such as Stabilizer, Roller Reamer, Hole opener, Drill Pipe, Drill Collar and Drilling Jar etc, which comply with API Spec.7-1 Vigor have the capability of customized tools for special circumstances use.

Can be used for... Read More If you are looking for competitive, high quality and fast delivery oilfield downhole drilling tools in stock, or if you are planning to buy downhole drilling tools API from one of the leading oilfield drilling tools, api 7-1 drilling tools, downhole tools, drilling equipment, oilfield drilling tools manufacturers and suppliers China, please feel free to contact VIGOR.

If you are looking for competitive, high quality and fast delivery oilfield downhole drilling tools in stock, or if you are planning to buy downhole drilling tools API from one of the leading oilfield drilling tools, api 7-1 drilling tools, downhole tools, drilling equipment, oilfield drilling tools manufacturers and suppliers China, please feel free to contact VIGOR.

A downhole wireline machining tool string according to claim 1, wherein the inserts (15) are abrasive inserts.

A downhole wireline machining tool string according to any of the preceding claims, wherein each insert (15) has a width (Wi) which is less than 40% of the length.

A downhole wireline machining tool string according to any of the preceding claims, wherein the second end part (9) has a decreasing outer diameter, and at least part of the inserts (15) extends at least partly along part of the second end part having the decreasing outer diameter.

The method according to any of claims 8 to 12 comprising pumping fluid through a venturi flow path and/or a recirculating flow path in the downhole tool to move cuttings further downhole.

The downhole tool (10,200) according to claim 1 wherein the gripping mechanism is resettable for positioning and gripping the casing with the first inside diameter and the casing with the second inside diameter at multiple locations in the wellbore.

The downhole tool (10,200) according to any preceding claim wherein a fluid displacement member (60,260) is disposed in a throughbore (25,250) of the cutting mechanism and is configured to introduce a pressure difference in the fluid upstream of the displacement member and the fluid downstream of the displacement member, the fluid displacement member providing a restriction and/or nozzle (74,274) in a flow path of the cutting mechanism to form a venturi flow path which is axially moveable in the tool body.

The downhole tool (10,200) according to any preceding claim comprising a bypass flow path (262) around the cutting mechanism and wherein the bypass flow path is selectively openable and/or closable.

The method according to claim 8 comprising actuating the gripping mechanism by pumping a fluid into a bore in the tool body, actuating the cutting mechanism by pumping a fluid into a bore in the tool body and rotating the cutting mechanism by rotating a tool string connected to the downhole tool to cut the casing.

A downhole wireline machining tool string according to any of the preceding claims, wherein the inserts (15) are distributed along the circumference with a mutual distance (16) being at least the width of one insert.

A downhole wireline machining tool string according to any of the preceding claims, wherein the inserts (15) are arranged in at least a first row (22) and a second row (23) extending along the circumference, and the first row and the second row of inserts are arranged in succession along the longitudinal axis.

A downhole wireline machining tool string according to any of claims 11-13, wherein the machining tool (7) further comprises a core drill (44) having a circumferential wall (45) with inserts, said circumferential wall circumferenting the body and being part of the rotatable tool part.

The method according to claim 8 or claim 9 comprising releasing the gripping mechanism from the casing of the first inside diameter after the casing of the first inside diameter has been cut and raising the downhole tool to a further desired depth.

The method according to claim 10 comprising actuating the gripping mechanism to grip the casing at the further desired depth and pulling the downhole tool toward the surface to remove the casing from the wellbore.

The downhole tool (10,200) according to claim 1 or claim 2 wherein the gripping mechanism comprises a lock mechanism to prevent accidental release of the gripping mechanism.

A downhole wireline machining tool string according to any of the preceding claims, wherein the rotatable tool part (5) rotates less than 300 revolutions per minute (RPM).

A downhole wireline machining tool string according to any of the preceding claims, wherein the driving unit (10) is powered by less than 7,000 watt.

A downhole wireline machining tool string according to any of the preceding claims, wherein the machining tool (7) further comprises a fastening element (41) for fastening a machined piece, the body (12) with inserts being rotatable in relation to the fastening element.

A downhole wireline machining tool string according to any of claims 11 or 12, wherein the fastening element (41) comprises a base part (42) and a projecting part (43), the projecting part being more flexible than the base part.