公开(公告)号：US20180119692A1

公开(公告)日：2018-05-03

申请号：US15338350

申请日：2016-10-29

Applicant: KELVIN, INC.

Inventor： David BANGOR ,  Logan DUFFY ,  Adam GUETZ ,  Tim JACKSON ,  Robbie PRATT ,  Peter HARDING ,  Niall WELLS

IPC: F04B49/22 ,  E21B43/12 ,  F04B47/12 ,  E21B47/00 ,  G01V1/52

CPC classification number: F04B49/22 ,  E21B43/123 ,  E21B47/0007 ,  F04B47/02 ,  F04B47/12 ,  F04B49/065 ,  F04B2201/0202 ,  G01H1/00 ,  G01V1/52

Abstract: A method of probabilistically estimating a velocity of a plunger of a beam pump may comprise continuously monitoring well acoustics using a plurality of passive acoustic sensors attached to external structures of the beam pump; digitizing outputs of the plurality of passive acoustic sensors and sending the digitized outputs to a computing device for storage and processing; and using the digitized outputs of the plurality of passive acoustic sensors, estimating a probability of the velocity of the plunger using a hidden Markov model (HMM) to represent a probability of a position and the probability of the velocity of the plunger, the HMM comprising a state space model and an observational model.

公开(公告)号：US20170306745A1

公开(公告)日：2017-10-26

申请号：US15135888

申请日：2016-04-22

Applicant: KELVIN INC.

Inventor： Peter HARDING ,  Logan DUFFY ,  Adam GUETZ ,  Niall WELLS ,  David BANGOR

IPC: E21B47/00 ,  E21B43/12 ,  F04B17/03 ,  F04B51/00 ,  F04B47/02

CPC classification number: E21B47/0008 ,  E21B43/127 ,  E21B2043/125 ,  F04B17/03 ,  F04B47/028 ,  F04B51/00

Abstract: A computer-implemented method may comprise attaching a plurality of wireless sensors to a pump jack; receiving time-stamped data from at least some of the plurality of wireless sensors attached to the pump jack, at least one of the plurality of wireless sensors comprising an accelerometer and a gyroscope and being attached to a crank arm of the pump jack; synchronizing the received time-stamped data; from the synchronized time-stamped data, calculating and generating information related to: a downhole load versus polished rod position of the pump jack; a relative balance of a counterweight of the pump jack relative to a horse head of the pump jack; deviations from a nominal acceleration profile of a bridle of the pump jack; and an angle of inclination of the bridle of the pump jack; and selectively generating, on a computing device, visualizations of the generated information.