diff --git a/AsbCloudApp/Requests/TelemetryRequest.cs b/AsbCloudApp/Requests/TelemetryRequest.cs
index 732d8075..e8f88a90 100644
--- a/AsbCloudApp/Requests/TelemetryRequest.cs
+++ b/AsbCloudApp/Requests/TelemetryRequest.cs
@@ -56,4 +56,13 @@ public class TelemetryDataRequest
     [Range(1, MaxTake)]
     public int Take { get; set; } = 1024;
 
+    /// <summary>
+    /// Больше или равно высоте талевого блока
+    /// </summary>
+    public double? GeBlockPosition { get; set; }
+    
+    /// <summary>
+    /// Меньше или равно высоте талевого блока
+    /// </summary>
+    public double? LeBlockPosition { get; set; }
 }
diff --git a/AsbCloudApp/Services/ITelemetryDataSaubService.cs b/AsbCloudApp/Services/ITelemetryDataSaubService.cs
index f684b3d6..da32ef50 100644
--- a/AsbCloudApp/Services/ITelemetryDataSaubService.cs
+++ b/AsbCloudApp/Services/ITelemetryDataSaubService.cs
@@ -45,12 +45,5 @@ namespace AsbCloudApp.Services
         /// <param name="token"></param>
         /// <returns></returns>
         Task<Stream> GetZippedCsv(int idWell, DateTime beginDate, DateTime endDate, CancellationToken token);
-
-        /// <summary>
-        /// Получение диапозона дат телеметрий
-        /// </summary>
-        /// <param name="token"></param>
-        /// <returns></returns>
-        Task<IDictionary<int, DatesRangeDto>> GetDateRangesAsync(CancellationToken token);
     }
 }
\ No newline at end of file
diff --git a/AsbCloudInfrastructure/Services/DetectOperations/WorkOperationDetection.cs b/AsbCloudInfrastructure/Services/DetectOperations/WorkOperationDetection.cs
index cb569515..d00be734 100644
--- a/AsbCloudInfrastructure/Services/DetectOperations/WorkOperationDetection.cs
+++ b/AsbCloudInfrastructure/Services/DetectOperations/WorkOperationDetection.cs
@@ -5,6 +5,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using AsbCloudApp.Data;
+using AsbCloudApp.Data.SAUB;
 using AsbCloudApp.Repositories;
 using AsbCloudApp.Requests;
 using AsbCloudApp.Services;
@@ -15,7 +16,7 @@ namespace AsbCloudInfrastructure.Services.DetectOperations;
 
 public class WorkOperationDetection : Work
 {
-	private static readonly IDictionary<int, DateTime> CacheOfStartDatesByTelemetryId = new Dictionary<int, DateTime>();
+	private static readonly IDictionary<int, DateTimeOffset> CacheOfStartDatesByTelemetryId = new Dictionary<int, DateTimeOffset>();
 
 	public WorkOperationDetection()
 		: base("Operation detection")
@@ -37,28 +38,28 @@ public class WorkOperationDetection : Work
 		var telemetryRepository = services.GetRequiredService<ICrudRepository<TelemetryDto>>();
 		var detectedOperationRepository = services.GetRequiredService<IDetectedOperationRepository>();
 		var detectedOperationService = services.GetRequiredService<IDetectedOperationService>();
-		var telemetryDataSaubService = services.GetRequiredService<ITelemetryDataSaubService>();
+		var telemetryDataCache = services.GetRequiredService<ITelemetryDataCache<TelemetryDataSaubDto>>();
 
 		var idsTelemetry = (await telemetryRepository.GetAllAsync(token))
 			.Select(t => t.Id)
 			.ToArray();
 
-		var telemetriesDateRanges = await telemetryDataSaubService.GetDateRangesAsync(token);
-
 		var lastDetectedOperations = await detectedOperationRepository.GetLastDetectedOperationsAsync(token);
 
 		for (int i = 0; i < idsTelemetry.Length; i++)
 		{
 			var idTelemetry = idsTelemetry[i];
 
-			if (!telemetriesDateRanges.TryGetValue(idTelemetry, out var telemetryDateRange))
+			var telemetryDateRange = telemetryDataCache.GetOrDefaultWellDataDateRange(idTelemetry);
+			
+			if(telemetryDateRange == null)
 				continue;
 
-			var dateBegin = telemetryDateRange.From.DateTime;
-			var dateEnd = telemetryDateRange.To.DateTime;
-
+			var dateBegin = telemetryDateRange.From;
+			var dateEnd = telemetryDateRange.To;
+			
 			if (lastDetectedOperations.TryGetValue(idTelemetry, out var lastDetectedOperation))
-				dateBegin = lastDetectedOperation.DateEnd.UtcDateTime;
+				dateBegin = lastDetectedOperation.DateEnd;
 
 			if (CacheOfStartDatesByTelemetryId.TryGetValue(idTelemetry, out var dateBeginFromCahce))
 				dateBegin = dateBeginFromCahce;
@@ -80,7 +81,7 @@ public class WorkOperationDetection : Work
 				var detectedOperations =
 					await detectedOperationService.DetectOperationsAsync(idTelemetry, request, lastDetectedOperation, token);
 				
-				dateBegin = detectedOperations.LastDate.UtcDateTime;
+				dateBegin = detectedOperations.LastDate;
 
 				CacheOfStartDatesByTelemetryId[idTelemetry] = dateBegin;
 
diff --git a/AsbCloudInfrastructure/Services/SAUB/TelemetryDataCache.cs b/AsbCloudInfrastructure/Services/SAUB/TelemetryDataCache.cs
index f80ccaa7..da0a9486 100644
--- a/AsbCloudInfrastructure/Services/SAUB/TelemetryDataCache.cs
+++ b/AsbCloudInfrastructure/Services/SAUB/TelemetryDataCache.cs
@@ -152,9 +152,9 @@ public class TelemetryDataCache<TDto> : ITelemetryDataCache<TDto> where TDto : A
         
         if (cacheItem.LastData.Count == 0)
             return null;
-
-        var to = FromDate(cacheItem.FirstByDate.DateTime, cacheItem.TimezoneOffset);
-        var from = FromDate(cacheItem.LastData[^1].DateTime, cacheItem.TimezoneOffset);
+        
+        var to = FromDate(cacheItem.LastData[^1].DateTime, cacheItem.TimezoneOffset);
+        var from = FromDate(cacheItem.FirstByDate.DateTime, cacheItem.TimezoneOffset);
 
         return new DatesRangeDto { From = from, To = to };
     }
diff --git a/AsbCloudInfrastructure/Services/SAUB/TelemetryDataSaubService.cs b/AsbCloudInfrastructure/Services/SAUB/TelemetryDataSaubService.cs
index c66cd984..8541caee 100644
--- a/AsbCloudInfrastructure/Services/SAUB/TelemetryDataSaubService.cs
+++ b/AsbCloudInfrastructure/Services/SAUB/TelemetryDataSaubService.cs
@@ -177,22 +177,6 @@ public class TelemetryDataSaubService : TelemetryDataBaseService<TelemetryDataSa
         return outStream;
     }
 
-    public async Task<IDictionary<int, DatesRangeDto>> GetDateRangesAsync(CancellationToken token)
-    {
-        return await db.Set<TelemetryDataSaub>().GroupBy(x => x.IdTelemetry)
-            .Select(g => new
-            {
-                IdTelemetry = g.Key,
-                From = g.Min(x => x.DateTime),
-                To = g.Max(x => x.DateTime)
-            })
-            .ToDictionaryAsync(x => x.IdTelemetry, x => new DatesRangeDto
-            {
-                From = x.From,
-                To = x.To
-            }, token);
-    }
-
     protected override IQueryable<TelemetryDataSaub> BuildQuery(int idTelemetry, TelemetryDataRequest request)
     {
         var query = base.BuildQuery(idTelemetry, request);