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1. (WO2018088999) SYSTEM AND METHOD FOR MODELING A TRANSIENT FLUID LEVEL OF A WELL

Pub. No.:    WO/2018/088999    International Application No.:    PCT/US2016/061154
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Nov 10 00:59:59 CET 2016
IPC: E21B 43/25
E21B 47/06
C09K 8/60
Applicants: HALLIBURTON ENERGY SERVICES, INC
Inventors: MADASU, Srinath
LIN, Avi
SHEN, Yijie
Title: SYSTEM AND METHOD FOR MODELING A TRANSIENT FLUID LEVEL OF A WELL
Abstract:
The disclosed embodiments include a method for determining fluid level drop and formation permeability during wellbore stimulation of a shut-in stage in real time. The method includes receiving an initial permeability value of a formation surrounding a wellbore. Further, the method includes performing, and if necessary repeating at a defined time interval, the following steps until a flowrate of stimulation fluid reaches zero or until a new pumping stage begins. The steps include solving for the flowrate of the stimulation fluid in the wellbore and computing hydrostatic pressure and a computed temperature in the wellbore. Further, the steps include updating a permeability calculation of the formation based on the flowrate of the stimulation fluid.