diff --git a/AsbCloudApp/Repositories/IDataSaubStatRepository.cs b/AsbCloudApp/Repositories/IDataSaubStatRepository.cs
index 6894fe41..efab95b7 100644
--- a/AsbCloudApp/Repositories/IDataSaubStatRepository.cs
+++ b/AsbCloudApp/Repositories/IDataSaubStatRepository.cs
@@ -11,12 +11,12 @@ namespace AsbCloudApp.Repositories
     public interface IDataSaubStatRepository
     {
         /// <summary>
-        /// Получение последних дат по телеметриям
+        /// Получение последних по дате окончания бурения записей в разрезе телеметрий
         /// </summary>
         /// <param name="idTelemetries">ключи телеметрий</param>
         /// <param name="token"></param>
         /// <returns></returns>
-        Task<IEnumerable<DataSaubStatDto>> GetLastDatesAsync(int[] idTelemetries, CancellationToken token);
+        Task<IEnumerable<DataSaubStatDto>> GetLastsAsync(int[] idTelemetries, CancellationToken token);
 
         /// <summary>
         /// Вставка записей статистики
diff --git a/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs b/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
index 93538b82..bc942353 100644
--- a/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
+++ b/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
@@ -43,7 +43,7 @@ namespace AsbCloudInfrastructure.Background.PeriodicWorks
                 return;
 
             var dataSaubStatRepo = services.GetRequiredService<IDataSaubStatRepository>();
-            var stats = await dataSaubStatRepo.GetLastDatesAsync(idTelemetries, token);
+            var stats = await dataSaubStatRepo.GetLastsAsync(idTelemetries, token);
 
             for( var i =0; i < idTelemetries.Length; i++)
             {
diff --git a/AsbCloudInfrastructure/Repository/DataSaubStatRepository.cs b/AsbCloudInfrastructure/Repository/DataSaubStatRepository.cs
index cadb4d69..59064abf 100644
--- a/AsbCloudInfrastructure/Repository/DataSaubStatRepository.cs
+++ b/AsbCloudInfrastructure/Repository/DataSaubStatRepository.cs
@@ -20,15 +20,11 @@ namespace AsbCloudInfrastructure.Repository
             db = dbContext;
         }
 
-        public async Task<IEnumerable<DataSaubStatDto>> GetLastDatesAsync(int[] idTelemetries, CancellationToken token)
+        public async Task<IEnumerable<DataSaubStatDto>> GetLastsAsync(int[] idTelemetries, CancellationToken token)
         {
             var stats = await db.Set<DataSaubStat>()
                 .Where(s => idTelemetries.Contains(s.IdTelemetry))
-                .GroupBy(s => s.IdTelemetry, (key, group) => new DataSaubStatDto()
-                {
-                    IdTelemetry = key,
-                    DateEnd = group.Max(s => s.DateEnd)
-                })
+                .GroupBy(s => s.IdTelemetry, (key, group) => group.OrderByDescending(el => el.DateEnd).First().Adapt<DataSaubStatDto>())
                 .ToArrayAsync(token);
 
             return stats;
diff --git a/AsbCloudWebApi.IntegrationTests/Repository/DataSaubStatRepositoryTest.cs b/AsbCloudWebApi.IntegrationTests/Repository/DataSaubStatRepositoryTest.cs
index 08ff3584..b328e8b8 100644
--- a/AsbCloudWebApi.IntegrationTests/Repository/DataSaubStatRepositoryTest.cs
+++ b/AsbCloudWebApi.IntegrationTests/Repository/DataSaubStatRepositoryTest.cs
@@ -75,31 +75,30 @@ namespace AsbCloudWebApi.IntegrationTests.Repository
 
         public DataSaubStatRepositoryTest(WebAppFactoryFixture factory) : base(factory)
         {
-            var dbSet = dbContext.Set<DataSaubStat>();
-            var categories = dbContext.Set<WellOperationCategory>();
-
-            categories.RemoveRange(categories);
-            dbSet.RemoveRange(dbSet);
-            dbContext.SaveChanges();
-
-            categories.Add(category);
-
-            var entities = statDtos.Select(stat => stat.Adapt<DataSaubStat>());
-            dbSet.AddRange(entities);
-            dbContext.SaveChanges();
-
             dataSaubStatRepository = scope.ServiceProvider.GetRequiredService<IDataSaubStatRepository>();
         }
 
         [Fact]
         public async Task GetLastDatesAsync_returns_success()
         {
+            //prepare
+            dbContext.CleanupDbSet<DataSaubStat>();
+
+            var dbSetSaubStat = dbContext.Set<DataSaubStat>();
+            var dbSetCategories = dbContext.Set<WellOperationCategory>();
+
+            var entities = statDtos.Select(stat => stat.Adapt<DataSaubStat>());
+
+            dbSetCategories.Add(category);
+            dbSetSaubStat.AddRange(entities);
+            dbContext.SaveChanges();
+
             //act
             var telemetryIds = statDtos.Select(stat => stat.IdTelemetry).ToArray();
-            var result = await dataSaubStatRepository.GetLastDatesAsync(telemetryIds, CancellationToken.None);
+            var result = await dataSaubStatRepository.GetLastsAsync(telemetryIds, CancellationToken.None);
 
             var expected = statDtos.Max(stat => stat.DateEnd);
-            var actual = result.Any() ? result.First().DateEnd : DateTimeOffset.UnixEpoch;
+            var actual = result.First().DateEnd;
 
             //assert
             Assert.True((expected - actual).Ticks == 0.0);
@@ -108,16 +107,19 @@ namespace AsbCloudWebApi.IntegrationTests.Repository
         [Fact]
         public async Task InsertRangeAsync_returns_success()
         {
+            //prepare
+            dbContext.CleanupDbSet<DataSaubStat>();
+
             //act
             var dbSet = dbContext.Set<DataSaubStat>();
             dbSet.RemoveRange(dbSet);
             dbContext.SaveChanges();
 
             var result = await dataSaubStatRepository.InsertRangeAsync(statDtos, CancellationToken.None);
-            
+
             //assert
             Assert.Equal(statDtos.Length, result);
-            
+
             var statDtosFromDb = dbSet.Select(stat => stat.Adapt<DataSaubStatDto>()).ToArray();
 
             var excludedProps = new[] {