diff --git a/AsbCloudInfrastructure/Services/WellOperationService/WellOperationService.cs b/AsbCloudInfrastructure/Services/WellOperationService/WellOperationService.cs
index 6e0d02d6..3c386136 100644
--- a/AsbCloudInfrastructure/Services/WellOperationService/WellOperationService.cs
+++ b/AsbCloudInfrastructure/Services/WellOperationService/WellOperationService.cs
@@ -106,7 +106,7 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
                 Take = take,
                 Count = await query.CountAsync(token).ConfigureAwait(false),
             };
-            var dateStart = query.Min(o => o.DateStart);
+            
             query = query
                 .OrderBy(e => e.DateStart)
                 .ThenBy(e => e.DepthEnd)
@@ -118,8 +118,12 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
             var entities = await query.Take(take).AsNoTracking()
                 .ToListAsync(token).ConfigureAwait(false);
 
+            if (!entities.Any())
+                return result;
+
             var nptHours = 0d;
 
+            var dateStart = query.Min(o => o.DateStart);
             foreach (var entity in entities)
             {
                 var dto = entity.Adapt<WellOperationDto>();
@@ -287,8 +291,6 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
                 .Include(s => s.OperationCategory)
                 .Where(s => s.IdWell == idWell);
 
-            var dateStart = query.Min(o => o.DateStart);
-
             if (operationType.HasValue)
                 query = query.Where(e => e.IdType == operationType.Value);