diff --git a/AsbCloudApp/Repositories/IWellOperationRepository.cs b/AsbCloudApp/Repositories/IWellOperationRepository.cs
index d37a1e90..12246578 100644
--- a/AsbCloudApp/Repositories/IWellOperationRepository.cs
+++ b/AsbCloudApp/Repositories/IWellOperationRepository.cs
@@ -1,9 +1,9 @@
 using AsbCloudApp.Data;
+using AsbCloudApp.Data.WellOperation;
+using AsbCloudApp.Requests;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
-using AsbCloudApp.Data.WellOperation;
-using AsbCloudApp.Requests;
 
 namespace AsbCloudApp.Repositories
 {
@@ -17,8 +17,8 @@ namespace AsbCloudApp.Repositories
         /// </summary>
         /// <returns></returns>
         IEnumerable<WellSectionTypeDto> GetSectionTypes();
-		
-		/// <summary>
+
+        /// <summary>
         /// Получить страницу списка операций
         /// </summary>
         /// <param name="request"></param>
@@ -26,7 +26,7 @@ namespace AsbCloudApp.Repositories
         /// <returns></returns>
         Task<IEnumerable<WellOperationDto>> GetAsync(WellOperationRequest request, CancellationToken token);
 
-		/// <summary>
+        /// <summary>
         /// Получить страницу списка операций
         /// </summary>
         /// <param name="request"></param>
@@ -34,7 +34,7 @@ namespace AsbCloudApp.Repositories
         /// <returns></returns>
         Task<PaginationContainer<WellOperationDto>> GetPageAsync(WellOperationRequest request, CancellationToken token);
 
-		/// <summary>
+        /// <summary>
         /// Получить статистику операции по скважине с группировкой по категориям
         /// </summary>
         /// <param name="request"></param>
@@ -42,14 +42,14 @@ namespace AsbCloudApp.Repositories
         /// <returns></returns>
         Task<IEnumerable<WellGroupOpertionDto>> GetGroupOperationsStatAsync(WellOperationRequest request, CancellationToken token);
 
-		/// <summary>
-		/// Добавить несколько операций
-		/// </summary>
-		/// <param name="dtos"></param>
-		/// <param name="deleteBeforeInsert"></param>
-		/// <param name="token"></param>
-		/// <returns></returns>
-		Task<int> InsertRangeAsync(IEnumerable<WellOperationDto> dtos, bool deleteBeforeInsert, CancellationToken token);
+        /// <summary>
+        /// Добавить несколько операций
+        /// </summary>
+        /// <param name="dtos"></param>
+        /// <param name="deleteBeforeInsert"></param>
+        /// <param name="token"></param>
+        /// <returns></returns>
+        Task<int> InsertRangeAsync(IEnumerable<WellOperationDto> dtos, bool deleteBeforeInsert, CancellationToken token);
 
         /// <summary>
         /// Обновить существующую операцию
@@ -75,13 +75,20 @@ namespace AsbCloudApp.Repositories
         /// <returns></returns>
         Task<IEnumerable<SectionByOperationsDto>> GetSectionsAsync(IEnumerable<int> idsWells, CancellationToken token);
 
-		/// <summary>
-		/// Получить диапазон дат выполнения операций
-		/// </summary>
-		/// <param name="idWell"></param>
-		/// <param name="idType"></param>
-		/// <param name="cancellationToken"></param>
-		/// <returns></returns>
-		Task<DatesRangeDto?> GetDatesRangeAsync(int idWell, int idType, CancellationToken cancellationToken); 
-	}
+        /// <summary>
+        /// Получить диапазон дат выполнения операций
+        /// </summary>
+        /// <param name="idWell"></param>
+        /// <param name="idType"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        Task<DatesRangeDto?> GetDatesRangeAsync(int idWell, int idType, CancellationToken cancellationToken);
+
+        /// <summary>
+        /// Возвращает первую и последнюю фактическую операцию
+        /// </summary>
+        /// <param name="idWell"></param>
+        /// <returns></returns>
+        (WellOperationDto First, WellOperationDto Last)? GetFirstAndLastFact(int idWell);
+    }
 }
\ No newline at end of file
diff --git a/AsbCloudInfrastructure/Repository/DepositRepository.cs b/AsbCloudInfrastructure/Repository/DepositRepository.cs
index 804d130e..f7bc4fdd 100644
--- a/AsbCloudInfrastructure/Repository/DepositRepository.cs
+++ b/AsbCloudInfrastructure/Repository/DepositRepository.cs
@@ -16,12 +16,12 @@ namespace AsbCloudInfrastructure.Repository
     public class DepositRepository : IDepositRepository
     {
         private readonly IAsbCloudDbContext db;
-        private readonly IWellService wellService;
+        private readonly ITelemetryService telemetryService;
 
-        public DepositRepository(IAsbCloudDbContext db, IWellService wellService)
+        public DepositRepository(IAsbCloudDbContext db, ITelemetryService telemetryService)
         {
             this.db = db;
-            this.wellService = wellService;
+            this.telemetryService = telemetryService;
         }
 
         /// <inheritdoc/>
@@ -112,8 +112,9 @@ namespace AsbCloudInfrastructure.Repository
                     {
                         var dto = well.Adapt<WellDto>();
                         dto.WellType = well.WellType.Caption;
-                        dto.LastTelemetryDate = wellService.GetLastTelemetryDate(well.Id)
-                            .ToOffset(TimeSpan.FromHours(well.Timezone.Hours));
+                        dto.LastTelemetryDate = well.IdTelemetry != null
+                            ? telemetryService.GetDatesRange(well.IdTelemetry.Value).To.ToOffset(TimeSpan.FromHours(well.Timezone.Hours))
+                            : DateTimeOffset.MinValue;
                         dto.Cluster = gCluster.Key.Caption;
                         dto.Deposit = gDeposit.Key.Caption;
                         return dto;
diff --git a/AsbCloudInfrastructure/Repository/WellOperationRepository.cs b/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
index 522895a7..95905314 100644
--- a/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
+++ b/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
@@ -20,6 +20,7 @@ namespace AsbCloudInfrastructure.Repository;
 public class WellOperationRepository : CrudRepositoryBase<WellOperationDto, WellOperation>,
     IWellOperationRepository
 {
+    private const string cacheKeyWellOperations = "FirstAndLastFactWellsOperations";
     private readonly IMemoryCache memoryCache;
     private readonly IWellOperationCategoryRepository wellOperationCategoryRepository;
     private readonly IWellService wellService;
@@ -148,14 +149,26 @@ public class WellOperationRepository : CrudRepositoryBase<WellOperationDto, Well
 
         await DeleteRangeAsync(existingOperationIds, token);
 
-        return await InsertRangeAsync(dtos, token);
+        var result = await InsertRangeAsync(dtos, token);
+
+        if (result > 0)
+            memoryCache.Remove(cacheKeyWellOperations);
+
+        return result;
+
     }
 
-    public override Task<int> UpdateRangeAsync(IEnumerable<WellOperationDto> dtos, CancellationToken token)
+    public override async Task<int> UpdateRangeAsync(IEnumerable<WellOperationDto> dtos, CancellationToken token)
     {
         EnsureValidWellOperations(dtos);
 
-        return base.UpdateRangeAsync(dtos, token);
+        var result = await base.UpdateRangeAsync(dtos, token);
+
+        if (result > 0)
+            memoryCache.Remove(cacheKeyWellOperations);
+
+        return result;
+
     }
 
     private static void EnsureValidWellOperations(IEnumerable<WellOperationDto> dtos)
@@ -350,6 +363,53 @@ public class WellOperationRepository : CrudRepositoryBase<WellOperationDto, Well
         };
     }
 
+    public (WellOperationDto First, WellOperationDto Last)? GetFirstAndLastFact(int idWell)
+    {
+        var cachedDictionary = memoryCache.GetOrCreate(cacheKeyWellOperations, (entry) =>
+        {
+            entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(5);
+            var query = dbContext.Set<WellOperation>()
+                .Where(o => o.IdType == WellOperation.IdOperationTypeFact)
+                .GroupBy(o => o.IdWell)
+                .Select(group => new
+                {
+                    IdWell = group.Key,
+                    FirstFact = group.OrderBy(o => o.DateStart).First(),
+                    LastFact = group.OrderBy(o => o.DateStart).Last(),
+                });
+
+            var entities = query.ToArray();
+
+            var dictionary = entities.ToDictionary(s => s.IdWell, s => (Convert(s.FirstFact), Convert(s.LastFact)));
+            entry.Value = dictionary;
+
+            return dictionary;
+
+        })!;
+
+        var firstAndLast = cachedDictionary.GetValueOrDefault(idWell);
+        return firstAndLast;
+
+    }
+
+    public override async Task<int> DeleteAsync(int id, CancellationToken token)
+    {
+        var result = await base.DeleteAsync(id, token);
+        if (result > 0)
+            memoryCache.Remove(cacheKeyWellOperations);
+
+        return result;
+    }
+
+    public override async Task<int> DeleteRangeAsync(IEnumerable<int> ids, CancellationToken token)
+    {
+        var result = await base.DeleteRangeAsync(ids, token);
+        if (result > 0)
+            memoryCache.Remove(cacheKeyWellOperations);
+
+        return result;
+    }
+
     protected override WellOperation Convert(WellOperationDto src)
     {
         var entity = src.Adapt<WellOperation>();
diff --git a/AsbCloudInfrastructure/Services/WellService.cs b/AsbCloudInfrastructure/Services/WellService.cs
index a10ff824..2c361e38 100644
--- a/AsbCloudInfrastructure/Services/WellService.cs
+++ b/AsbCloudInfrastructure/Services/WellService.cs
@@ -116,12 +116,12 @@ namespace AsbCloudInfrastructure.Services
 
             if (well is null)
                 return null;
-            
+
             var wellInfo = wellInfoService.FirstOrDefault(well => well.Id == idWell);
 
             if (wellInfo is null)
                 return well.Adapt<WellMapInfoWithTelemetryStat>();
-                
+
             wellInfo.IdState = well.IdState;
             return wellInfo;
         }
@@ -153,7 +153,7 @@ namespace AsbCloudInfrastructure.Services
         {
             if (IsTelemetryAssignedToDifferentWell(dto))
                 throw new ArgumentInvalidException(nameof(dto), "Телеметрия уже была привязана к другой скважине.");
-            
+
             if (dto.Id != 0 && (await GetCacheAsync(token)).Any(w => w.Id == dto.Id))
                 throw new ArgumentInvalidException(nameof(dto), $"Нельзя повторно добавить скважину с id: {dto.Id}");
 
@@ -177,12 +177,12 @@ namespace AsbCloudInfrastructure.Services
             throw new NotImplementedException();
         }
 
-        public override async Task<int> UpdateAsync(WellDto dto, 
+        public override async Task<int> UpdateAsync(WellDto dto,
             CancellationToken token)
         {
             if (IsTelemetryAssignedToDifferentWell(dto))
                 throw new ArgumentInvalidException(nameof(dto), "Телеметрия уже была привязана к другой скважине.");
-            
+
             var oldRelations = (await GetCacheRelationCompanyWellAsync(token))
                 .Where(r => r.IdWell == dto.Id).ToArray();
 
@@ -192,16 +192,16 @@ namespace AsbCloudInfrastructure.Services
                 dbContext.RelationCompaniesWells
                     .RemoveRange(dbContext.RelationCompaniesWells
                         .Where(r => r.IdWell == dto.Id));
-                
+
                 DropCacheRelationCompanyWell();
 
                 var newRelations = dto.Companies
                     .Select(c => new RelationCompanyWell
                     {
-                        IdWell = dto.Id, 
+                        IdWell = dto.Id,
                         IdCompany = c.Id
                     });
-                
+
                 dbContext.RelationCompaniesWells.AddRange(newRelations);
             }
 
@@ -215,7 +215,7 @@ namespace AsbCloudInfrastructure.Services
 
         public async Task<string> GetWellCaptionByIdAsync(int idWell, CancellationToken token)
         {
-            var entity = await GetOrDefaultAsync(idWell, token).ConfigureAwait(false);            
+            var entity = await GetOrDefaultAsync(idWell, token).ConfigureAwait(false);
             return entity!.Caption;
         }
 
@@ -272,10 +272,9 @@ namespace AsbCloudInfrastructure.Services
 
             if (entity.Timezone is null)
                 dto.Timezone = GetTimezone(entity.Id);
-                
-            dto.StartDate = dbContext.WellOperations.Where(e => e.IdType == WellOperation.IdOperationTypeFact)
-                .AsNoTracking()
-                .MinOrDefault(e => e.DateStart)?.ToRemoteDateTime(dto.Timezone.Hours);
+
+            dto.StartDate = wellOperationRepository
+                .GetFirstAndLastFact(entity.Id)?.First?.DateStart;
             dto.WellType = entity.WellType.Caption;
             dto.Cluster = entity.Cluster.Caption;
             dto.Deposit = entity.Cluster.Deposit.Caption;