Ram L Ladi from San Francisco, CA, age 85

Us Patents

Matrix Drill Bits And Method Of Manufacture
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US Patent:

7784381, Aug 31, 2010
Filed:

Jan 18, 2008
Appl. No.:

12/016910
Inventors:

Ram L. Ladi - Tomball TX, US
Gary Weaver - Conroe TX, US
David A. Brown - New Caney TX, US
Assignee:

Halliburton Energy Services, Inc. - Houston TX
International Classification:

B22F 3/00
B21K 5/04
US Classification:

761082, 175425, 419 5, 419 6
Abstract:

A matrix drill bit and method of manufacturing a matrix bit body from a composite of matrix materials is disclosed. Two or more different types of matrix materials may be used to form a composite matrix bit body. A first matrix material may be selected to provide optimum fracture resistance (toughness) and optimum erosion, abrasion and wear resistance for portions of a matrix bit body such as cutter sockets, cutting structures, blades, junk slots and other portions of the bit body associated with engaging and removing formation materials. A second matrix material may be selected to provide desired infiltration of hot, liquid binder material with the first matrix material to form a solid, coherent, composite matrix bit body.

Element Containing Thermally Stable Polycrystalline Diamond Material And Methods And Assemblies For Formation Thereof
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US Patent:

8261858, Sep 11, 2012
Filed:

Sep 2, 2011
Appl. No.:

13/225134
Inventors:

Brian Atkins - Houston TX, US
Seth G. Anderle - Spring TX, US
Robert W. Arfele - Magnolia TX, US
Ram L. Ladi - Tomball TX, US
Brandon Paul Linford - Draper UT, US
Jason Keith Wiggins - Draper UT, US
Kevin Duy Nguyen - Riverton UT, US
Jiang Qian - Cedar Hills UT, US
Kenneth Eugene Bertagnolli - Riverton UT, US
Shawn Casey Scott - Payson UT, US
Debkumar Mukhopadhyay - Sandy UT, US
Michael Alexander Vail - Genola UT, US
Assignee:

Halliburton Energy Services, Inc. - Houston TX
International Classification:

E21B 10/46
US Classification:

175374, 1754202, 175434
Abstract:

The disclosure provides a super abrasive element containing a substantially catalyst-free thermally stable polycrystalline diamond (TSP) body having pores and a contact surface, a base adjacent the contact surface of the TSP body; and an infiltrant material infiltrated in the base and in the pores of the TSP body at the contact surface. The disclosure additionally provides earth-boring drill bits and other devices containing such super abrasive elements. The disclosure further provides methods and mold assemblies for forming such super abrasive elements via infiltration and hot press methods.

Mechanical Attachment Of Thermally Stable Diamond To A Substrate
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US Patent:

8336648, Dec 25, 2012
Filed:

Sep 2, 2011
Appl. No.:

13/225214
Inventors:

Gary E. Weaver - Conroe TX, US
Seth G. Anderle - Spring TX, US
Ram L. Ladi - Tomball TX, US
Assignee:

Halliburton Energy Services, Inc. - Houston TX
International Classification:

E21B 10/00
E21B 10/62
E21B 10/627
E21B 10/633
US Classification:

175412, 175413, 1754202, 175426, 175432, 175434
Abstract:

The present disclosure provides mechanical attachments of TSD body to a carrier or substrate sufficient to allow eventual conventional attachment of the TSD to a drill bit or other component. According to one aspect, the disclosure includes a composite assembly including a thermally stable diamond (TSD) body and a substrate with aligned holes and a joining pin located in the aligned holes to mechanically attach the TSD body and substrate. The composite assembly may lack any non-mechanical attachment between the TSD body and the substrate, or may lack particular types of non-mechanical attachments. The disclosure also provides drill bits and other devices containing such composite assemblies as well as methods of making such composite assemblies and drill bits or other devices.

Chemical Agents For Recovery Of Leached Materials
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US Patent:

8404019, Mar 26, 2013
Filed:

Jun 24, 2011
Appl. No.:

13/168755
Inventors:

Ram L. Ladi - Tomball TX, US
Stephen W. Almond - Spring TX, US
Gary E. Weaver - Conroe TX, US
Assignee:

Halliburton Energy Services, Inc. - Houston TX
International Classification:

C22B 3/06
C22B 3/44
US Classification:

75739, 75740, 75743, 423140, 4231501
Abstract:

The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching process. The mask may be formed from or coated with polytetrafluoroethylene (PTFE). The disclosure also provides a leaching system containing such a mask and a leaching vessel as well as methods of using the protective and leaching systems. The disclosure further provides a Lewis acid-based leaching agent and methods of its use. Finally, the disclosure provides a method of recycling a PDC or carbide element using a Lewis acid-based leaching agent.

Chemical Agents For Leaching Polycrystalline Diamond Elements
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US Patent:

8435324, May 7, 2013
Filed:

Jun 24, 2011
Appl. No.:

13/168733
Inventors:

Ram L. Ladi - Tomball TX, US
Carl Edward Wells - Richland Hills TX, US
Bhupinder Kumar Kataria - Spring TX, US
Stephen W. Almond - Spring TX, US
Assignee:

Halliburton Energy Sevices, Inc. - Houston TX
International Classification:

C22B 3/06
US Classification:

75743, 4231501
Abstract:

The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching process. The mask may be formed from or coated with polytetrafluoroethylene (PTFE). The disclosure also provides a leaching system containing such a mask and a leaching vessel as well as methods of using the protective and leaching systems. The disclosure further provides a Lewis acid-based leaching agent and methods of its use. Finally, the disclosure provides a method of recycling a PDC or carbide element using a Lewis acid-based leaching agent.

Matrix Drill Bits And Method Of Manufacture
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US Patent:

20060231293, Oct 19, 2006
Filed:

Jan 10, 2006
Appl. No.:

11/329595
Inventors:

Ram Ladi - Tomball TX, US
Gary Weaver - Conroe TX, US
David Brown - New Caney TX, US
International Classification:

E21B 10/36
US Classification:

175374000, 175425000, 076108200
Abstract:

A matrix drill bit and method of manufacturing a matrix bit body from a composite of matrix materials is disclosed. Two or more different types of matrix materials may be used to form a composite matrix bit body. A first matrix material may be selected to provide optimum fracture resistance (toughness) and optimum erosion, abrasion and wear resistance for portions of a matrix bit body such as cutter sockets, cutting structures, blades, junk slots and other portions of the bit body associated with engaging and removing formation materials. A second matrix material may be selected to provide desired infiltration of hot, liquid binder material with the first matrix material to form a solid, coherent, composite matrix bit body.

Matrix Drill Bits And Method Of Manufacture
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US Patent:

20100288821, Nov 18, 2010
Filed:

Jul 27, 2010
Appl. No.:

12/844362
Inventors:

Ram L. Ladi - Tomball TX, US
Gary Weaver - Conroe TX, US
David A. Brown - New Caney TX, US
International Classification:

B23K 31/02
US Classification:

2281221
Abstract:

A matrix drill bit and method of manufacturing a matrix bit body from a composite of matrix materials is disclosed. Two or more different types of matrix materials may be used to form a composite matrix bit body. A first matrix material may be selected to provide optimum fracture resistance (toughness) and optimum erosion, abrasion and wear resistance for portions of a matrix bit body such as cutter sockets, cutting structures, blades, junk slots and other portions of the bit body associated with engaging and removing formation materials. A second matrix material may be selected to provide desired infiltration of hot, liquid binder material with the first matrix material to form a solid, coherent, composite matrix bit body.

Protective System For Leaching Polycrystalline Diamond Elements
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US Patent:

20120151847, Jun 21, 2012
Filed:

Jun 24, 2011
Appl. No.:

13/168712
Inventors:

Ram L. Ladi - Tomball TX, US
Carl Edward Wells - Richland Hills TX, US
Bhupinder Kumar Kataria - Spring TX, US
Stephen W. Almond - Spring TX, US
International Classification:

C23F 1/00
C09K 3/14
US Classification:

51307, 1563453, 15634519
Abstract:

The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching process. The mask may be formed from or coated with polytetrafluoroethylene (PTFE). The disclosure also provides a leaching system containing such a mask and a leaching vessel as well as methods of using the protective and leaching systems. The disclosure further provides a Lewis acid-based leaching agent and methods of its use. Finally, the disclosure provides a method of recycling a PDC or carbide element using a Lewis acid-based leaching agent.