National Oilwell Varco, L.p.

National Oilwell Dht, L.p.

Deepthi Raj Setlur

Russell C Gilleylen

Michael D Hughes

Jiinjen Albert Sue

Guodong Zhan

Harold Sreshta

Stefan M Butuc

Mark Jonathan Francis

James Robert Streater

Harold A Sreshta

Haresh Ghansyam

Alan H Kitching

Murray Gilbertson

Russell Gilleylen

John Christopher Troncoso

Shiran Waas

James R Streater

A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

Polycrystalline diamond cutting element

A downhole tool comprises a housing having a longitudinal bore and an agitator assembly disposed within the longitudinal bore of the housing. A removable component is disposed within the longitudinal bore and can be removed from the housing so as to at least partially open the longitudinal bore.

Downhole pulse generating device for through-bore operations

A polycrystalline diamond cutting (PDC) element of a drill bit of a downhole drilling tool is provided. The PDC element having a substrate, a diamond table and at least one pattern. The diamond table has an initial cutting edge along a periphery thereof. The pattern integrally formed within the diamond table. The pattern(s) defining at least one discontinuity about the diamond table that, in operation, selectively breaks away upon impact to create new cutting edges in the diamond table whereby a sharp cutting edge is continuously exposed to a material being cut.

Polycrystalline diamond cutting element and method of using same

The present invention includes compositions and methods of supplying a corrosion inhibitor including placing a corrosion inhibitor attached to a nanostructure carrier, placing the nanostructure carrier containing the corrosion inhibitor at a location and the nanostructure carrier is capable of releasing the corrosion inhibitor.

Releasable corrosion inhibitors

Growing community of inventors

Cypress, TX, United States of America

Deepthi Raj Setlur