Low frequency DAS well interference evaluation
AssigneeConocoPhillips Company
InventorsGe Jin, Kyle R Krueger, Baishali Roy
Life of this patent
Estimating the term…
Abstract
Methods and systems for assessing cross-well interference and/or optimizing hydrocarbon production from a reservoir by obtaining low frequency DAS and DTS data and pressure data from a monitor well, when both the monitor and production well are shut-in, and then variably opening the production well for production, and detecting the temperature and pressure fluctuations that indication cross-well interference, and localizing the interference along the well length based on the low frequency DAS data. This information can be used to optimize well placement, completion plans, fracturing plans, and ultimately optimize production from a given reservoir.
Claims16
A system for evaluating cross-well interference in a hydrocarbon reservoir, comprising:
- a) a hydraulically fractured monitor well in a hydrocarbon reservoir;
- b) a hydraulically fractured production well fitted for production of hydrocarbons in said reservoir;
- c) one or more fiber optic cables along a length of said monitor well, said one or more fiber optic cables configured for low frequency distributed acoustic sensing (“DAS”) of <1 Hz and for distributed temperature sensing (“DTS”);
- d) one or more pressure sensor(s) in said monitor well and in said production well;
- e) a processor at a surface of said reservoir operably connected to said one or more fiber optic cables and said one or more pressure sensor(s) for analyzing recorded DAS data and DTS data and pressure data.
A system for evaluating cross-well interference in a hydrocarbon reservoir, comprising:
- a) a hydraulically fractured, cased, cemented and perforated monitor well in a hydrocarbon reservoir;
- b) a hydraulically fractured, cased, cemented and perforated production well fitted for production of hydrocarbons in said reservoir;
- c) one or more fiber optic cables cemented behind a casing and along a length of said monitor well, said one or more fiber optic cables configured for low frequency distributed acoustic sensing (“DAS”) of <1 Hz and for distributed temperature sensing (“DTS”);
- d) one or more pressure sensor(s) in said monitor well and in said production well;
- and
- e) a processor at a surface of said reservoir operably connected to said one or more fiber optic cables and said one or more pressure sensor(s) for analyzing recorded DAS data and DTS data and pressure data.
A system for evaluating cross-well interference in a hydrocarbon reservoir, comprising:
- a) a hydraulically fractured, cased, cemented and perforated monitor well in a hydrocarbon reservoir;
- b) a hydraulically fractured, cased, cemented and perforated production well fitted for production of hydrocarbons in said reservoir;
- c) one or more fiber optic cables cemented behind a casing and along a length of said monitor well and one or more fiber optic cables cemented behind a casing and along a length of said production well, said one or more fiber optic cables configured for low frequency distributed acoustic sensing (“DAS”) of <1 Hz and for distributed temperature sensing (“DTS”);
- d) one or more pressure sensor(s) in said monitor well and one or more pressure sensor(s) in said production well;
- and
- e) a processor at a surface of said reservoir operably connected to said one or more fiber optic cables and said one or more pressure sensor(s) for analyzing recorded DAS data and DTS data and pressure data.
Dependencies are inferred from the claim text.