diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9c0000d0..63ac1474e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -61,7 +61,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - [#1183](https://github.com/equinor/webviz-subsurface/pull/1183) - Reduced loading time by lazy loading only requested plugins when application starts.
 - [#1182](https://github.com/equinor/webviz-subsurface/pull/1182) - `ParameterResponseCorrelation` can now allow default None column_keys when using arrow file as input
-- [#1122](https://github.com/equinor/webviz-subsurface/pull/1122) - `opm` and `ecl2df` are now optional, making `windows-subsurface` possible to install and import on non-unix based systems. **NOTE:** a lot of the functionality in `webviz-subsurface` is built on `opm` and `ecl2df`, and issues are therefore expected on eg Windows and macOS. Use with care.
+- [#1122](https://github.com/equinor/webviz-subsurface/pull/1122) - `opm` and `res2df` are now optional, making `windows-subsurface` possible to install and import on non-unix based systems. **NOTE:** a lot of the functionality in `webviz-subsurface` is built on `opm` and `res2df`, and issues are therefore expected on eg Windows and macOS. Use with care.
 - [#1146](https://github.com/equinor/webviz-subsurface/pull/1146) - Converted the `BhpQc` plugin to WLF (Webviz Layout Framework).
 - [#1184](https://github.com/equinor/webviz-subsurface/pull/1184) - `WellAnalysis`: changes to the settings layout in the `WellOverview` view
 
diff --git a/setup.py b/setup.py
index 740ee6218..98139812a 100644
--- a/setup.py
+++ b/setup.py
@@ -92,7 +92,7 @@
         "dash_bootstrap_components>=0.10.3",
         "dash-daq>=0.5.0",
         "defusedxml>=0.6.0",
-        "ecl2df>=0.15.0; sys_platform=='linux'",
+        "res2df>=1.0; sys_platform=='linux'",
         "flask-caching",
         "fmu-ensemble>=1.2.3",
         "fmu-tools>=1.8",
diff --git a/webviz_subsurface/_datainput/pvt_data.py b/webviz_subsurface/_datainput/pvt_data.py
index b6fcbc03e..6b34fd891 100644
--- a/webviz_subsurface/_datainput/pvt_data.py
+++ b/webviz_subsurface/_datainput/pvt_data.py
@@ -11,7 +11,7 @@
 import numpy as np
 import pandas as pd
 
-# opm and ecl2df are only available for Linux,
+# opm and res2df are only available for Linux,
 # hence, ignore any import exception here to make
 # it still possible to use the PvtPlugin on
 # machines with other OSes.
@@ -19,7 +19,7 @@
 # NOTE: Functions in this file cannot be used
 #       on non-Linux OSes.
 try:
-    import ecl2df
+    import res2df
     from opm.io.ecl import EclFile
 except ImportError:
     pass
@@ -202,10 +202,10 @@ def load_pvt_dataframe(
 ) -> pd.DataFrame:
     # pylint: disable=too-many-statements
 
-    def check_if_ecl2df_is_installed() -> None:
-        # If ecl2df is not loaded, this machine is probably not
+    def check_if_res2df_is_installed() -> None:
+        # If res2df is not loaded, this machine is probably not
         # running Linux and the modules are not available.
-        if "ecl2df" not in sys.modules:
+        if "res2df" not in sys.modules:
             raise ModuleNotFoundError(
                 "Your operating system does not support opening and reading"
                 " Eclipse files. An empty data frame will be returned and your"
@@ -214,14 +214,14 @@ def check_if_ecl2df_is_installed() -> None:
                 " to display PVT data anyways."
             )
 
-    def ecl2df_pvt_data_frame(kwargs: Any) -> pd.DataFrame:
-        check_if_ecl2df_is_installed()
-        return ecl2df.pvt.df(kwargs["realization"].get_eclfiles())
+    def res2df_pvt_data_frame(kwargs: Any) -> pd.DataFrame:
+        check_if_res2df_is_installed()
+        return res2df.pvt.df(kwargs["realization"].get_eclfiles())
 
     def init_to_pvt_data_frame(kwargs: Any) -> pd.DataFrame:
         # pylint: disable-msg=too-many-locals
         # pylint: disable=too-many-branches
-        check_if_ecl2df_is_installed()
+        check_if_res2df_is_installed()
         ecl_init_file = EclFile(
             kwargs["realization"].get_eclfiles().get_initfile().get_filename()
         )
@@ -400,7 +400,7 @@ def init_to_pvt_data_frame(kwargs: Any) -> pd.DataFrame:
 
     return filter_pvt_data_frame(
         load_ensemble_set(ensemble_paths, ensemble_set_name).apply(
-            init_to_pvt_data_frame if use_init_file else ecl2df_pvt_data_frame
+            init_to_pvt_data_frame if use_init_file else res2df_pvt_data_frame
         ),
         drop_ensemble_duplicates,
     )
diff --git a/webviz_subsurface/_datainput/relative_permeability.py b/webviz_subsurface/_datainput/relative_permeability.py
index 37b6ae8db..4da9decfd 100644
--- a/webviz_subsurface/_datainput/relative_permeability.py
+++ b/webviz_subsurface/_datainput/relative_permeability.py
@@ -7,7 +7,7 @@
 from .fmu_input import load_ensemble_set
 
 try:
-    import ecl2df
+    import res2df
 except ImportError:
     pass
 
@@ -22,10 +22,10 @@ def load_satfunc(
     ensemble_paths: dict,
     ensemble_set_name: str = "EnsembleSet",
 ) -> pd.DataFrame:
-    def ecl2df_satfunc(kwargs: Any) -> pd.DataFrame:
-        return ecl2df.satfunc.df(kwargs["realization"].get_eclfiles())
+    def res2df_satfunc(kwargs: Any) -> pd.DataFrame:
+        return res2df.satfunc.df(kwargs["realization"].get_eclfiles())
 
-    return load_ensemble_set(ensemble_paths, ensemble_set_name).apply(ecl2df_satfunc)
+    return load_ensemble_set(ensemble_paths, ensemble_set_name).apply(res2df_satfunc)
 
 
 @webvizstore
diff --git a/webviz_subsurface/_datainput/well_completions.py b/webviz_subsurface/_datainput/well_completions.py
index 385edf906..b84ba1b1c 100644
--- a/webviz_subsurface/_datainput/well_completions.py
+++ b/webviz_subsurface/_datainput/well_completions.py
@@ -7,7 +7,7 @@
 
 import pandas as pd
 
-# opm and ecl2df are only available for Linux,
+# opm and res2df are only available for Linux,
 # hence, ignore any import exception here to make
 # it still possible to use the PvtPlugin on
 # machines with other OSes.
@@ -15,7 +15,7 @@
 # NOTE: Functions in this file cannot be used
 #       on non-Linux OSes.
 try:
-    from ecl2df import EclFiles, common
+    from res2df import EclFiles, common
 except ImportError:
     pass
 
@@ -44,7 +44,7 @@ def read_zone_layer_mapping(
 ) -> pd.DataFrame:
     """Searches for all zone->layer mapping files for an ensemble. \
     The files should be on lyr format and can be parsed using functionality \
-    from ecl2df.
+    from res2df.
 
     The results are returned as a dataframe with the following columns:
     * REAL
diff --git a/webviz_subsurface/_providers/ensemble_summary_provider/_field_metadata.py b/webviz_subsurface/_providers/ensemble_summary_provider/_field_metadata.py
index c78eb7491..61e6036c1 100644
--- a/webviz_subsurface/_providers/ensemble_summary_provider/_field_metadata.py
+++ b/webviz_subsurface/_providers/ensemble_summary_provider/_field_metadata.py
@@ -47,14 +47,14 @@ def create_vector_metadata_from_field_meta(
     """Create VectorMetadata from keywords stored in the field's metadata"""
 
     # Note that when we query the values in the field.metadata we always get byte strings
-    # back from pyarrow. Further, ecl2df writes all the values as strings, so we must
+    # back from pyarrow. Further, res2df writes all the values as strings, so we must
     # convert these to the correct types before creating the VectorMetadata instance.
-    # See also ecl2df code:
-    # https://github.com/equinor/ecl2df/blob/0e30fb8046bf17fd338bb468584985c5d816e2f6/ecl2df/summary.py#L441
+    # See also res2df code:
+    # https://github.com/equinor/res2df/blob/0e30fb8046bf17fd338bb468584985c5d816e2f6/res2df/summary.py#L441
 
-    # Currently, based on the ecl2df code, we assume that all keys except for 'get_num'
+    # Currently, based on the res2df code, we assume that all keys except for 'get_num'
     # and 'wgname' must be present in order to return a valid metadata object
-    # https://github.com/equinor/ecl2df/blob/0e30fb8046bf17fd338bb468584985c5d816e2f6/ecl2df/summary.py#L541-L552
+    # https://github.com/equinor/res2df/blob/0e30fb8046bf17fd338bb468584985c5d816e2f6/res2df/summary.py#L541-L552
 
     meta_dict = field.metadata
     if not meta_dict:
diff --git a/webviz_subsurface/_providers/ensemble_summary_provider/dev_compare_fmu_to_lazy_provider.py b/webviz_subsurface/_providers/ensemble_summary_provider/dev_compare_fmu_to_lazy_provider.py
index cf74295f6..361fcf7a6 100644
--- a/webviz_subsurface/_providers/ensemble_summary_provider/dev_compare_fmu_to_lazy_provider.py
+++ b/webviz_subsurface/_providers/ensemble_summary_provider/dev_compare_fmu_to_lazy_provider.py
@@ -8,7 +8,7 @@
 
 import datacompy  # pylint: disable=import-error, useless-suppression
 import dateutil.parser  # type: ignore
-import ecl2df
+import res2df
 import numpy as np
 import pandas as pd
 from fmu.ensemble import ScratchEnsemble
@@ -92,14 +92,14 @@ def _load_smry_dataframe_using_fmu(
     return df
 
 
-def _load_smry_dataframe_using_ecl2df(
+def _load_smry_dataframe_using_res2df(
     ens_path: str, frequency: Optional[Frequency]
 ) -> pd.DataFrame:
     time_index: str = "raw"
     if frequency:
         time_index = frequency.value
 
-    print(f"## Loading data into DataFrame using ECL2DF  time_index={time_index}...")
+    print(f"## Loading data into DataFrame using res2df  time_index={time_index}...")
 
     realidxregexp = re.compile(r"realization-(\d+)")
     globpattern = os.path.join(ens_path, "eclipse/model/*.UNSMRY")
@@ -122,8 +122,8 @@ def _load_smry_dataframe_using_ecl2df(
 
         print(f"R={real}:  {smry_file}")
 
-        eclfiles = ecl2df.EclFiles(smry_file.replace(".UNSMRY", ""))
-        real_df = ecl2df.summary.df(eclfiles, time_index=time_index)
+        eclfiles = res2df.EclFiles(smry_file.replace(".UNSMRY", ""))
+        real_df = res2df.summary.df(eclfiles, time_index=time_index)
         real_df.insert(0, "REAL", real)
         real_df.index.name = "DATE"
         per_real_df_arr.append(real_df)
@@ -277,7 +277,7 @@ def main() -> None:
     print("## Loading data into reference DataFrame...")
     # Note that for version 2.13.0 and earlier of ecl, loading via FMU will not give the
     # correct results. This was remedied in https://github.com/equinor/ecl/pull/837
-    # reference_df = _load_smry_dataframe_using_ecl2df(ensemble_path, frequency)
+    # reference_df = _load_smry_dataframe_using_res2df(ensemble_path, frequency)
     reference_df = _load_smry_dataframe_using_fmu(ensemble_path, frequency)
 
     print("## Comparing get_vectors()...")
diff --git a/webviz_subsurface/plugins/_group_tree/_plugin.py b/webviz_subsurface/plugins/_group_tree/_plugin.py
index c2560c134..34fc5970f 100644
--- a/webviz_subsurface/plugins/_group_tree/_plugin.py
+++ b/webviz_subsurface/plugins/_group_tree/_plugin.py
@@ -46,9 +46,9 @@ class GroupTree(WebvizPluginABC):
     `gruptree_file` is a path to a file stored per realization (e.g. in \
     `share/results/tables/gruptree.csv"`).
     The `gruptree_file` file can be dumped to disk per realization by the `ECL2CSV` forward
-    model with subcommand `gruptree`. The forward model uses `ecl2df` to export a table
+    model with subcommand `gruptree`. The forward model uses `res2df` to export a table
     representation of the Eclipse network:
-    [Link to ecl2csv gruptree documentation.](https://equinor.github.io/ecl2df/usage/gruptree.html).
+    [Link to ecl2csv gruptree documentation.](https://equinor.github.io/res2df/usage/gruptree.html).
 
     **time_index**
 
diff --git a/webviz_subsurface/plugins/_pvt_plot/_plugin.py b/webviz_subsurface/plugins/_pvt_plot/_plugin.py
index af614a709..80232bd12 100644
--- a/webviz_subsurface/plugins/_pvt_plot/_plugin.py
+++ b/webviz_subsurface/plugins/_pvt_plot/_plugin.py
@@ -36,9 +36,9 @@ class PvtPlot(WebvizPluginABC):
     The minimum requirement is to define `ensembles`.
 
     If no `pvt_relative_file_path` is given, the PVT data will be extracted automatically
-    from the simulation decks of individual realizations using `fmu_ensemble` and `ecl2df`.
+    from the simulation decks of individual realizations using `fmu_ensemble` and `res2df`.
     If the `read_from_init_file` flag is set to True, the extraction procedure in
-    `ecl2df` will be replaced by an individual extracting procedure that reads the
+    `res2df` will be replaced by an individual extracting procedure that reads the
     normalized Eclipse INIT file.
     Note that the latter two extraction methods can be very slow for larger data and are therefore
     not recommended unless you have a very simple model/data deck.
@@ -56,7 +56,7 @@ class PvtPlot(WebvizPluginABC):
     * One column named `VISCOSITY` as the second covariate.
 
     The file can e.g. be dumped to disc per realization by a forward model in ERT using
-    `ecl2df`.
+    `res2df`.
     """
 
     class Ids(StrEnum):
@@ -110,7 +110,7 @@ def __init__(
             raise ValueError(
                 (
                     "There has to be a KEYWORD or TYPE column with corresponding Eclipse keyword."
-                    "When not providing a csv file, make sure ecl2df is installed."
+                    "When not providing a csv file, make sure res2df is installed."
                 )
             )
 
diff --git a/webviz_subsurface/plugins/_relative_permeability.py b/webviz_subsurface/plugins/_relative_permeability.py
index eaa41f160..1136d0c59 100644
--- a/webviz_subsurface/plugins/_relative_permeability.py
+++ b/webviz_subsurface/plugins/_relative_permeability.py
@@ -46,7 +46,7 @@ class RelativePermeability(WebvizPluginABC):
 The minimum requirement is to define `ensembles`.
 
 If no `relpermfile` is defined, the relative permeability data will be extracted automatically
-from the simulation decks of individual realizations using `fmu-ensemble`and `ecl2df` behind the
+from the simulation decks of individual realizations using `fmu-ensemble`and `res2df` behind the
 scenes. Note that this method can be very slow for larger data decks, and is therefore not
 recommended unless you have a very simple model/data deck.
 
@@ -59,10 +59,10 @@ class RelativePermeability(WebvizPluginABC):
 * One column **per** capillary pressure curve (e.g. `PCOW`).
 
 The `relpermfile` file can e.g. be dumped to disk per realization by a forward model in ERT that
-wraps the command `ecl2csv satfunc input_file -o output_file` (requires that you have `ecl2df`
+wraps the command `ecl2csv satfunc input_file -o output_file` (requires that you have `res2df`
 installed). A typical example could be:
 `ecl2csv satfunc eclipse/include/props/relperm.inc -o share/results/tables/relperm.csv`.
-[Link to ecl2csv satfunc documentation.](https://equinor.github.io/ecl2df/scripts.html#satfunc)
+[Link to ecl2csv satfunc documentation.](https://equinor.github.io/res2df/scripts.html#satfunc)
 
 
 `scalfile` is a path to __a single file of SCAL recommendations__ (for all
@@ -257,7 +257,7 @@ def __init__(
             ):
                 raise ValueError(
                     "Unrecognized saturation table keyword in data. This should not occur unless "
-                    "there has been changes to ecl2df. Update of this plugin might be required."
+                    "there has been changes to res2df. Update of this plugin might be required."
                 )
             else:
                 self.family = 2
diff --git a/webviz_subsurface/plugins/_rft_plotter/_plugin.py b/webviz_subsurface/plugins/_rft_plotter/_plugin.py
index 612be5dc3..f73df557c 100644
--- a/webviz_subsurface/plugins/_rft_plotter/_plugin.py
+++ b/webviz_subsurface/plugins/_rft_plotter/_plugin.py
@@ -44,7 +44,7 @@ class RftPlotter(WebvizPluginABC):
 01_drogon_ahm/realization-0/iter-0/share/results/tables/rft_ert.csv).
 
 * **`rft.csv`**: A csv file containing simulated RFT data extracted from ECLIPSE RFT output files \
-using [ecl2df](https://equinor.github.io/ecl2df/ecl2df.html#module-ecl2df.rft) \
+using [res2df](https://equinor.github.io/res2df/res2df.html#module-res2df.rft) \
 [(example file)](https://github.com/equinor/webviz-subsurface-testdata/blob/master/\
 01_drogon_ahm/realization-0/iter-0/share/results/tables/rft.csv). \
 Simulated RFT data can be visualized along MD if a "CONMD" column is present in \
diff --git a/webviz_subsurface/plugins/_vfp_analysis/_utils/_vfp_data_model.py b/webviz_subsurface/plugins/_vfp_analysis/_utils/_vfp_data_model.py
index b21fad1e8..0cafa9380 100644
--- a/webviz_subsurface/plugins/_vfp_analysis/_utils/_vfp_data_model.py
+++ b/webviz_subsurface/plugins/_vfp_analysis/_utils/_vfp_data_model.py
@@ -7,8 +7,8 @@
 
 import numpy as np
 import pyarrow as pa
-from ecl2df.vfp import pyarrow2basic_data
-from ecl2df.vfp._vfpdefs import (
+from res2df.vfp import pyarrow2basic_data
+from res2df.vfp._vfpdefs import (
     ALQ,
     GFR,
     THPTYPE,
@@ -233,7 +233,7 @@ def _read_vfp_arrow(filename: str) -> io.BytesIO:
     """Function to read the vfp arrow files and return them as
     a io.BytesIO object in order to be stored as portable.
 
-    Uses the pyarrow2basic_data function from ecl2df in order
+    Uses the pyarrow2basic_data function from res2df in order
     to convert the pyarrow table into a dictionary. But then
     the columns have to be converted to strings, or lists in order
     to be encoded.
diff --git a/webviz_subsurface/plugins/_well_analysis/_plugin.py b/webviz_subsurface/plugins/_well_analysis/_plugin.py
index fa224889c..1fef8f134 100644
--- a/webviz_subsurface/plugins/_well_analysis/_plugin.py
+++ b/webviz_subsurface/plugins/_well_analysis/_plugin.py
@@ -43,9 +43,9 @@ class WellAnalysis(WebvizPluginABC):
     `share/results/tables/gruptree.csv"`).
 
     The `gruptree_file` file can be dumped to disk per realization by the `ECL2CSV` forward
-    model with subcommand `gruptree`. The forward model uses `ecl2df` to export a table
+    model with subcommand `gruptree`. The forward model uses `res2df` to export a table
     representation of the Eclipse network:
-    [Link to ecl2csv gruptree documentation.](https://equinor.github.io/ecl2df/usage/gruptree.html).
+    [Link to ecl2csv gruptree documentation.](https://equinor.github.io/res2df/usage/gruptree.html).
 
     **time_index**
 
diff --git a/webviz_subsurface/plugins/_well_completions/_business_logic.py b/webviz_subsurface/plugins/_well_completions/_business_logic.py
index 054561014..8708bacc8 100644
--- a/webviz_subsurface/plugins/_well_completions/_business_logic.py
+++ b/webviz_subsurface/plugins/_well_completions/_business_logic.py
@@ -164,7 +164,7 @@ def webviz_store(self) -> Tuple[Callable, List[Dict]]:
 def merge_compdat_and_connstatus(
     df_compdat: pd.DataFrame, df_connstatus: pd.DataFrame
 ) -> pd.DataFrame:
-    """This function merges the compdat data (exported with ecl2df) with the well connection
+    """This function merges the compdat data (exported with res2df) with the well connection
     status data (extracted from the CPI summary data). The connection status data will
     be used for wells where it exists. The KH will be merged from the compdat. For wells
     that are not in the connection status data, the compdat data will be used as it is.
diff --git a/webviz_subsurface/plugins/_well_completions/_plugin.py b/webviz_subsurface/plugins/_well_completions/_plugin.py
index 5ab12c618..9112ba9d8 100644
--- a/webviz_subsurface/plugins/_well_completions/_plugin.py
+++ b/webviz_subsurface/plugins/_well_completions/_plugin.py
@@ -11,7 +11,7 @@
 
 @deprecated_plugin(
     "This plugin has been replaced by the `WellCompletion` plugin (without "
-    "the `s`) which is based on the `wellcompletionsdata` export from `ecl2df`. "
+    "the `s`) which is based on the `wellcompletionsdata` export from `res2df`. "
     "The new plugin is faster and has more functionality. "
 )
 class WellCompletions(WebvizPluginABC):
@@ -37,11 +37,11 @@ class WellCompletions(WebvizPluginABC):
 
     `compdat_file` is a path to a file stored per realization (e.g. in \
     `share/results/tables/compdat.csv`). This file can be exported to disk per realization by using
-    the `ECL2CSV` forward model in ERT with subcommand `compdat`. [Link to ecl2csv compdat documentation.](https://equinor.github.io/ecl2df/usage/compdat.html)
+    the `ECL2CSV` forward model in ERT with subcommand `compdat`. [Link to ecl2csv compdat documentation.](https://equinor.github.io/res2df/usage/compdat.html)
 
-    The connection status history of each cell is not necessarily complete in the `ecl2df` export,
+    The connection status history of each cell is not necessarily complete in the `res2df` export,
     because status changes resulting from ACTIONs can't be extracted from the Eclipse input
-    files. If the `ecl2df` export is good, it is recommended to use that. This will often be the
+    files. If the `res2df` export is good, it is recommended to use that. This will often be the
     case for history runs. But if not, an alternative way of extracting the data is described in
     the next section.
 
@@ -49,7 +49,7 @@ class WellCompletions(WebvizPluginABC):
 
     The `well_connection_status_file` is a path to a file stored per realization (e.g. in \
     `share/results/tables/wellconnstatus.csv`. This file can be exported to disk per realization
-    by using the `ECL2CSV` forward model in ERT with subcommand `wellconnstatus`.  [Link to ecl2csv wellconnstatus documentation.](https://equinor.github.io/ecl2df/usage/wellconnstatus.html)
+    by using the `ECL2CSV` forward model in ERT with subcommand `wellconnstatus`.  [Link to ecl2csv wellconnstatus documentation.](https://equinor.github.io/res2df/usage/wellconnstatus.html)
 
     This approach uses the CPI summary data to create a well connection status history: for
     each well connection cell there is one line for each time the connection is opened or closed.
diff --git a/webviz_subsurface/smry2arrow_batch.py b/webviz_subsurface/smry2arrow_batch.py
index 122d94cc4..e5aef73dd 100644
--- a/webviz_subsurface/smry2arrow_batch.py
+++ b/webviz_subsurface/smry2arrow_batch.py
@@ -10,7 +10,7 @@
 from pathlib import Path
 from typing import List
 
-import ecl2df
+import res2df
 
 logger = logging.getLogger(__name__)
 
@@ -47,21 +47,21 @@ def _get_parser() -> argparse.ArgumentParser:
 
 def _convert_single_smry_file(smry_filename: str, arrow_filename: str) -> None:
     """Read summary data for single realization from disk and write it out to .arrow
-    file using ecl2df.
+    file using res2df.
     """
 
     eclbase = (
         smry_filename.replace(".DATA", "").replace(".UNSMRY", "").replace(".SMSPEC", "")
     )
 
-    eclfiles = ecl2df.EclFiles(eclbase)
-    sum_df = ecl2df.summary.df(eclfiles)
+    eclfiles = res2df.EclFiles(eclbase)
+    sum_df = res2df.summary.df(eclfiles)
 
-    # Slight hack here, using ecl2df protected function to gain access to conversion routine
+    # Slight hack here, using res2df protected function to gain access to conversion routine
     # pylint: disable=protected-access
-    sum_table = ecl2df.summary._df2pyarrow(sum_df)
+    sum_table = res2df.summary._df2pyarrow(sum_df)
 
-    ecl2df.summary.write_dframe_stdout_file(sum_table, arrow_filename)
+    res2df.summary.write_dframe_stdout_file(sum_table, arrow_filename)
 
 
 def _batch_convert_smry2arrow(