John G Eller

US Patent:

20100307736, Dec 9, 2010

Filed:

Jun 8, 2010

Appl. No.:

12/796370

Inventors:

David D. Hearn - Houston TX, US
Lamar L. Gantt - Anchorage AK, US
Dan E. Venhaus - Chugiak AK, US
John G. Eller - Anchorage AK, US

Assignee:

CONOCOPHILLIPS COMPANY - Houston TX

International Classification:

E21B 23/03
E21B 7/04

US Classification:

1661175, 175 61

Abstract:

The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.

US Patent:

20230078999, Mar 16, 2023

Filed:

Aug 22, 2022

Appl. No.:

17/821287

Inventors:

- Houston TX, US
John G. ELLER - Houston TX, US
Matthew L. WHITE - Houston TX, US

Assignee:

CONOCOPHILLIPS COMPANY - Houston TX

International Classification:

E21B 34/14

Abstract:

Gravity driven reverse circulator tools are provided and methods of using same. One tool has nested pipes that when fully nested close a hole in one of the pipes, but when the drillstring is lifted, the pipes partially separate under the force of gravity to expose the hole. The other embodiment is similar, but the hole is hook shaped (hook on top as in a walking cane) and a protrusion from the other pipe fits in the hole. Thus, both lifting and rotation are needed open the tool.

US Patent:

20230019069, Jan 19, 2023

Filed:

Jul 18, 2022

Appl. No.:

17/867418

Inventors:

- Houston TX, US
John G. Eller - Houston TX, US
Matthew L. White - Houston TX, US

International Classification:

G01L 1/02

Abstract:

Disclosed are systems and methods for pressure testing coiled tubing (CT) in a well. A CT pressure testing device may include a CT connector for attaching to a CT segment and a pressure test housing defining a pressure chamber. A rod may extend through a top opening of the pressure test housing and through the CT connector to the severed end of the CT segment. A sealing plug coupled to a bottom end of the rod may create an interface between the CT connector and the CT segment. A force activator may apply a force to a top end of the rod, causing the rod to push the sealing plug into the CT segment and tighten the interface. A pump may pressurize the pressure chamber to perform a pressure test on the sealing plug. Accordingly, the CT pressure testing device may establish a well control barrier for the well.

US Patent:

20160305221, Oct 20, 2016

Filed:

Jun 20, 2016

Appl. No.:

15/187182

Inventors:

- Osaka, JP
Lamar L. GANTT - Anchorage AK, US
Dan E. VENHAUS - Chugiak AK, US
John G. ELLER - Anchorage AK, US

International Classification:

E21B 41/00
E21B 10/00
E21B 43/10
E21B 33/12
E21B 7/06
E21B 29/06

Abstract:

The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.