diff --git a/AsbCloudApp/Services/ICrudService.cs b/AsbCloudApp/Services/ICrudService.cs
index c4b93207..24e8de6f 100644
--- a/AsbCloudApp/Services/ICrudService.cs
+++ b/AsbCloudApp/Services/ICrudService.cs
@@ -1,17 +1,17 @@
-using System;
-using System.Collections.Generic;
-using System.Linq.Expressions;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace AsbCloudApp.Services
 {
     public interface ICrudService<Tdto>
         where Tdto : Data.IId
     {
-        int Delete(int id);
-        Tdto Get(int id);
-        IEnumerable<Tdto> GetAll(Expression<Func<object, bool>> predicate = null);
-        Tdto Insert(Tdto newItem);
-        IEnumerable<Tdto> InsertRange(IEnumerable<Tdto> newItems);
-        Tdto Update(Tdto item);
+        Task<Tdto> GetAsync(int id, CancellationToken token = default);
+        Task<Tdto> InsertAsync(Tdto newItem, CancellationToken token = default);
+        Task<IEnumerable<Tdto>> InsertRangeAsync(IEnumerable<Tdto> newItems, CancellationToken token = default);
+        Task<Tdto> UpdateAsync(Tdto item, CancellationToken token = default);
+        Task<int> DeleteAsync(int id, CancellationToken token = default);
+        Task<int> DeleteAsync(IEnumerable<int> ids, CancellationToken token = default);
     }
 }
\ No newline at end of file
diff --git a/AsbCloudApp/Services/IWellSectionService.cs b/AsbCloudApp/Services/IWellSectionService.cs
new file mode 100644
index 00000000..a7b22f19
--- /dev/null
+++ b/AsbCloudApp/Services/IWellSectionService.cs
@@ -0,0 +1,12 @@
+using AsbCloudApp.Data;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace AsbCloudApp.Services
+{
+    public interface IWellSectionService: ICrudService<WellSectionDto>
+    {
+        Task<PaginationContainer<WellSectionDto>> GetAllByWellIdAsync(int idWell, int skip=0, int take=32, CancellationToken token = default);
+    }
+}