diff --git a/landcover_viewer/core.py b/landcover_viewer/core.py
index 091373f..f166263 100644
--- a/landcover_viewer/core.py
+++ b/landcover_viewer/core.py
@@ -5,7 +5,7 @@
 
 import ee, json, os, time
 
-# -----------------------------------------------------------------------------
+# =============================================================================
 class LandCoverViewer():
     '''
         Google Earth Engine API
@@ -652,8 +652,7 @@ def download_to_drive(self,
         try:
             task = ee.batch.Export.image.toDrive(
                 image = image,
-                folder = 'GEEServiceAccountExport',
-                description = 'Export from SERVIR Mekong Team',
+                description = 'Land Cover Export from SERVIR Mekong',
                 fileNamePrefix = temp_file_name,
                 scale = 30,
                 region = self.geometry.bounds().getInfo()['coordinates'],#self.geometry.getInfo()['coordinates'],
@@ -711,3 +710,5 @@ def get_stats(self, year=2016, primitives=range(0, 21)):
         # area = reducer.getInfo()['tcc'] * 100 * 100 * 0.0001 # in hectare
         # meaning we can use the value directly as the hectare
         return {self.INDEX_CLASS[int(float(k))]:float('{0:.2f}'.format(v)) for k,v  in data.items()}
+
+# =============================================================================
diff --git a/requirements.txt b/requirements.txt
index d65a4b8..a425180 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,11 +31,12 @@ djangocms-style==2.0.2
 djangocms-text-ckeditor==3.5.0
 djangocms-video==2.0.3
 djangorestframework==3.6.4
-earthengine-api==0.1.119
+earthengine-api==0.1.182
 easy-thumbnails==2.4.1
 enum34==1.1.6
 fasteners==0.14.1
 google-api-python-client==1.6.3
+google-auth==1.6.3
 gunicorn==19.7.1
 html5lib==0.9999999
 httplib2==0.10.3
@@ -48,8 +49,8 @@ oauth2client==4.1.2
 olefile==0.44
 Pillow==4.2.1
 psycopg2==2.7.3.1
-pyasn1==0.3.4
-pyasn1-modules==0.1.4
+pyasn1==0.4.5
+pyasn1-modules==0.2.5
 pycparser==2.18
 pyOpenSSL==17.2.0
 pytz==2017.2
diff --git a/scripts/delete-service-account-files.py b/scripts/delete-service-account-files.py
new file mode 100644
index 0000000..c8f04dc
--- /dev/null
+++ b/scripts/delete-service-account-files.py
@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+
+import os
+import googleapiclient.discovery
+from google.oauth2 import service_account
+
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+# GEE authentication
+# The service account email address authorized by your Google contact.
+EE_ACCOUNT = 'rlcms-526@servir-rlcms.iam.gserviceaccount.com'
+EE_PRIVATE_KEY_FILE = os.path.join(BASE_DIR, 'credentials/privatekey.json')
+
+GOOGLE_OAUTH2_CREDENTIALS = service_account.Credentials.from_service_account_file(
+    EE_PRIVATE_KEY_FILE,
+    scopes = ['https://www.googleapis.com/auth/drive']
+)
+
+drive_service = googleapiclient.discovery.build('drive', 'v2', credentials=GOOGLE_OAUTH2_CREDENTIALS)
+
+# list all the files
+files = drive_service.files().list().execute()
+
+# get all the items of the files
+items = files.get('items')
+print('total {} items found'.format(len(items)))
+
+# delete the files by getting its id
+deleted = 0
+not_deleted = 0
+not_deleted_id = []
+
+for f in items:
+    response = drive_service.files().delete(fileId=f['id']).execute()
+    if not response:
+        deleted += 1
+    else:
+        not_deleted_id.append(f['id'])
+        not_deleted += 1
+
+print('total {} items deleted'.format(deleted))
+print('total {} items cannot be deleted having ids: {}'.format(not_deleted, not_deleted_id))
+
+folders = drive_service.children().list(folderId='root').execute()
+folders = folders.get('items')
+print('total {} folder found'.format(len(folders)))
+
+for f in folders:
+    drive_service.children().delete(folderId='root', childId=f['id']).execute()
diff --git a/utils/drive.py b/utils/drive.py
index 173f0fd..12a5ca9 100644
--- a/utils/drive.py
+++ b/utils/drive.py
@@ -8,22 +8,26 @@
 import googleapiclient.discovery
 import httplib2
 
-# -----------------------------------------------------------------------------
+# =============================================================================
 class DriveHelper(object):
     """A helper class for interfacing with Google Drive."""
 
     # -------------------------------------------------------------------------
-    def __init__(self, credentials):
+    def __init__(self, credentials, use_http=False):
         """Creates a credentialed Drive service with the given credentials.
     
             Args:
                 credentials: The OAuth2 credentials.
         """
-        http = credentials.authorize(httplib2.Http())
-        self.service = googleapiclient.discovery.build('drive', 'v2', http=http)
+
+        if use_http:
+            http = credentials.authorize(httplib2.Http())
+            self.service = googleapiclient.discovery.build('drive', 'v2', http=http)
+        else:
+            self.service = googleapiclient.discovery.build('drive', 'v2', credentials=credentials)
 
     # -------------------------------------------------------------------------
-    def GrantAccess(self, file_id, email):
+    def grant_access(self, file_id, email):
         """Grants the email address write access to the file with the given ID.
 
             Note: "writer" access is required to create a copy of a file.
@@ -32,6 +36,7 @@ def GrantAccess(self, file_id, email):
                 file_id: The ID of the file to which to grant access.
                 email: The email address to grant access.
         """
+
         # Determine the permission ID for the email address.
         id_resp = self.service.permissions().getIdForEmail(email=email).execute()
         new_permission = {
@@ -40,12 +45,13 @@ def GrantAccess(self, file_id, email):
             'id': id_resp['id']
         }
         self.service.permissions().insert(
-            fileId=file_id,
-            body=new_permission,
-            sendNotificationEmails=False).execute()
+            fileId = file_id,
+            body = new_permission,
+            sendNotificationEmails = False
+        ).execute()
 
     # -------------------------------------------------------------------------
-    def CopyFile(self, origin_file_id, copy_title):
+    def copy_file(self, origin_file_id, copy_title):
         """Copies the file with the ID in the user's root folder with the title.
 
             Args:
@@ -55,13 +61,16 @@ def CopyFile(self, origin_file_id, copy_title):
             Returns:
                 The file ID of the copy.
         """
+
         body = {'title': copy_title}
         copied_file = self.service.files().copy(
-            fileId=origin_file_id, body=body).execute()
+            fileId = origin_file_id,
+            body = body
+        ).execute()
         return copied_file['id']
 
     # -------------------------------------------------------------------------
-    def GetExportedFiles(self, prefix):
+    def get_exported_files(self, prefix):
         """Returns the Drive file ID of the first file found with the prefix.
 
             Args:
@@ -70,16 +79,24 @@ def GetExportedFiles(self, prefix):
             Returns:
                 A list of Drive file objects that match the prefix.
         """
+
         prefix_with_escaped_quotes = prefix.replace('"', '\\"')
         query = "title contains '%s'" % prefix_with_escaped_quotes
-        files = self.service.files().list(q=query).execute()
+        files = self.service.files().list(
+            q = query
+        ).execute()
         return files.get('items')
 
     # -------------------------------------------------------------------------
-    def DeleteFile(self, file_id):
+    def delete_file(self, file_id):
         """Deletes the file with the given ID.
 
             Args:
                 file_id: The ID of the file to delete.
         """
-        self.service.files().delete(fileId=file_id).execute()
\ No newline at end of file
+
+        self.service.files().delete(
+            fileId = file_id
+        ).execute()
+
+# =============================================================================
diff --git a/utils/utils.py b/utils/utils.py
index 4404c93..634625b 100644
--- a/utils/utils.py
+++ b/utils/utils.py
@@ -11,35 +11,38 @@ def get_unique_string():
     """Returns a likely-to-be unique string."""
 
     random_str = ''.join(
-        random.choice(string.ascii_uppercase + string.digits) for _ in range(6))
+        random.choice(string.ascii_uppercase + string.digits) for _ in range(6)
+    )
     date_str = str(int(time.time()))
     return date_str + random_str
 
 # -----------------------------------------------------------------------------
 def transfer_files_to_user_drive(temp_file_name, user_email, user_id, file_name, oauth2object):
 
-    APP_DRIVE_HELPER = drive.DriveHelper(settings.GOOGLE_OAUTH2_CREDENTIALS)
-    files = APP_DRIVE_HELPER.GetExportedFiles(temp_file_name)
+    app_drive = drive.DriveHelper(settings.GOOGLE_OAUTH2_CREDENTIALS)
+    files = app_drive.get_exported_files(temp_file_name)
     # Grant the user write access to the file(s) in the app service account's Drive.
     for f in files:
-        APP_DRIVE_HELPER.GrantAccess(f['id'], user_email)
+        app_drive.grant_access(f['id'], user_email)
 
-    user_drive_helper = drive.DriveHelper(oauth2object)
+    user_drive = drive.DriveHelper(oauth2object, True)
 
     # Copy the file(s) into the user's Drive.
     if len(files) == 1:
         file_id = files[0]['id']
-        copied_file_id = user_drive_helper.CopyFile(file_id, file_name)
+        copied_file_id = user_drive.copy_file(file_id, file_name)
         trailer = 'open?id=' + copied_file_id
     else:
         trailer = ''
         for f in files:
             # The titles of the files include the coordinates separated by a dash.
             coords = '-'.join(f['title'].split('-')[-2:])
-            user_drive_helper.CopyFile(f['id'], file_name + '-' + coords)
+            user_drive.copy_file(f['id'], file_name + '-' + coords)
 
     # Delete the file from the service account's Drive.
     for f in files:
-        APP_DRIVE_HELPER.DeleteFile(f['id'])
+        app_drive.delete_file(f['id'])
 
     return 'https://drive.google.com/' + trailer
+
+# -----------------------------------------------------------------------------