Global Patent Index - EP 3173576 A1

EP 3173576 A1 2017-05-31 - WELL PUMPING SYSTEM AND METHOD

Title (en)

WELL PUMPING SYSTEM AND METHOD

Title (de)

BOHRLOCHPUMPSYSTEM UND -VERFAHREN

Title (fr)

PROCÉDÉ ET SYSTÈME DE POMPAGE DE PUITS

Publication

EP 3173576 A1 (EN)

Application

EP 16199697 A

Priority

US 201514947839 A

Abstract (en)

A well pumping system can include an actuator that reciprocably displaces a rod string, a continuous position sensor that continuously detects a position of a member of the actuator, and a control system that modifies reciprocal displacement of the rod string by the actuator, in response to an output of the continuous position sensor. A well pumping method can include reciprocably displacing a rod string, continuously detecting a velocity profile with a continuous position sensor, and modifying the velocity profile while the rod string reciprocably displaces, in response to an output of the continuous position sensor.

IPC 8 full level (invention and additional information)

E21B 43/12 (2006.01)

CPC (invention and additional information)

F04B 49/12 (2013.01); E21B 43/126 (2013.01); E21B 43/127 (2013.01); F04B 9/103 (2013.01); F04B 19/22 (2013.01); F04B 47/02 (2013.01); F04B 49/20 (2013.01); F04B 49/22 (2013.01); F04B 53/16 (2013.01); F04B 2203/0409 (2013.01); F04B 2203/0903 (2013.01)

Citation (applicant)

EVERITT, T.A.; JENNINGS, J.W.: "An Improved Finite-Difference Calculation of Downhole Dynamometer Cards for Sucker-Rod Pumps", SPE, vol. 18189, February 1992 (1992-02-01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

EPO simple patent family

EP 3173576 A1 20170531; US 2017146006 A1 20170525

INPADOC legal status


2017-05-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20161118

2017-05-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

2017-05-31 [AV] REQUEST FOR VALIDATION OF THE EUROPEAN PATENT IN:

- Countries: MA MD

2017-05-31 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: BA ME