diff --git a/AsbCloudApp/Services/IWellCompositeService.cs b/AsbCloudApp/Repositories/IWellCompositeRepository.cs
similarity index 75%
rename from AsbCloudApp/Services/IWellCompositeService.cs
rename to AsbCloudApp/Repositories/IWellCompositeRepository.cs
index 80088619..c14fd11c 100644
--- a/AsbCloudApp/Services/IWellCompositeService.cs
+++ b/AsbCloudApp/Repositories/IWellCompositeRepository.cs
@@ -3,20 +3,21 @@ using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace AsbCloudApp.Services
+namespace AsbCloudApp.Repositories
 {
+#nullable enable
     /// <summary>
-    /// Сервис создания композитной скважины
+    /// Репозиторий создания композитной скважины
     /// </summary>
-    public interface IWellCompositeService
+    public interface IWellCompositeRepository
     {
         /// <summary>
         /// Получить секции композитной скважины
         /// </summary>
         /// <param name="idWell"></param>
-        /// <param name="cancellationToken"></param>
+        /// <param name="token"></param>
         /// <returns></returns>
-        Task<IEnumerable<WellCompositeDto>> GetAsync(int idWell, CancellationToken cancellationToken);
+        Task<IEnumerable<WellCompositeDto>> GetAsync(int idWell, CancellationToken token);
 
         /// <summary>
         /// сохранить секции композитной скважины
@@ -27,4 +28,5 @@ namespace AsbCloudApp.Services
         /// <returns></returns>
         Task<int> SaveAsync(int idWell, IEnumerable<WellCompositeDto> wellComposites, CancellationToken token);
     }
+#nullable disable
 }
diff --git a/AsbCloudInfrastructure/DependencyInjection.cs b/AsbCloudInfrastructure/DependencyInjection.cs
index 3f089a0c..f77735c7 100644
--- a/AsbCloudInfrastructure/DependencyInjection.cs
+++ b/AsbCloudInfrastructure/DependencyInjection.cs
@@ -123,7 +123,6 @@ namespace AsbCloudInfrastructure
             services.AddTransient<IUserService, UserService>();
             services.AddTransient<IUserRoleService, UserRoleService>();
             services.AddTransient<IWellService, WellService>();
-            services.AddTransient<IWellCompositeService, WellCompositeService>();
             services.AddTransient<IWellOperationImportService, WellOperationImportService>();
             services.AddTransient<IWellOperationService, WellOperationService>();
             services.AddTransient<IScheduleReportService, ScheduleReportService>();
@@ -162,6 +161,7 @@ namespace AsbCloudInfrastructure
                         .Include(c => c.Deposit))); // может быть включен в сервис ClusterService
             services.AddTransient<IFileRepository, FileRepository>();
             services.AddTransient<IFileStorageRepository, FileStorageRepository>();
+            services.AddTransient<IWellCompositeRepository, WellCompositeRepository>();
             // Subsystem service
             services.AddTransient<ICrudService<SubsystemDto>, CrudCacheServiceBase<SubsystemDto, Subsystem>>();
             services.AddTransient<ISubsystemService, SubsystemService>();
diff --git a/AsbCloudInfrastructure/Services/WellCompositeService.cs b/AsbCloudInfrastructure/Repository/WellCompositeRepository.cs
similarity index 60%
rename from AsbCloudInfrastructure/Services/WellCompositeService.cs
rename to AsbCloudInfrastructure/Repository/WellCompositeRepository.cs
index da532e2c..de56ee60 100644
--- a/AsbCloudInfrastructure/Services/WellCompositeService.cs
+++ b/AsbCloudInfrastructure/Repository/WellCompositeRepository.cs
@@ -1,5 +1,5 @@
 using AsbCloudApp.Data;
-using AsbCloudApp.Services;
+using AsbCloudApp.Repositories;
 using AsbCloudDb.Model;
 using Mapster;
 using Microsoft.EntityFrameworkCore;
@@ -8,20 +8,22 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace AsbCloudInfrastructure.Services
+namespace AsbCloudInfrastructure.Repository
 {
-    public class WellCompositeService : IWellCompositeService
+#nullable enable
+    public class WellCompositeRepository : IWellCompositeRepository
     {
-        private readonly IAsbCloudDbContext context;
+        private readonly IAsbCloudDbContext db;
 
-        public WellCompositeService(IAsbCloudDbContext context)
+        public WellCompositeRepository(IAsbCloudDbContext db)
         {
-            this.context = context;
+            this.db = db;
         }
 
+        /// <inheritdoc/>
         public async Task<IEnumerable<WellCompositeDto>> GetAsync(int idWell, CancellationToken token)
         {
-            var entities = await context.WellComposites
+            var entities = await db.WellComposites
                 .Where(c => c.IdWell == idWell)
                 .AsNoTracking()
                 .ToListAsync(token)
@@ -29,28 +31,30 @@ namespace AsbCloudInfrastructure.Services
             return entities.Select(Convert);
         }
 
+        /// <inheritdoc/>
         public Task<int> SaveAsync(int idWell, IEnumerable<WellCompositeDto> wellComposites, CancellationToken token)
         {
-            context.WellComposites.RemoveRange(context.WellComposites
+            db.WellComposites.RemoveRange(db.WellComposites
                 .Where(c => c.IdWell == idWell));
 
             var entities = wellComposites
                 .Select(w => Convert(idWell, w));
 
-            context.WellComposites.AddRange(entities);
-            return context.SaveChangesAsync(token);
+            db.WellComposites.AddRange(entities);
+            return db.SaveChangesAsync(token);
         }
 
-        private WellComposite Convert(int idWell, WellCompositeDto dto)
+        private static WellComposite Convert(int idWell, WellCompositeDto dto)
         {
             var entity = dto.Adapt<WellComposite>();
             entity.IdWell = idWell;
             return entity;
         }
-        private WellCompositeDto Convert(WellComposite entity)
+        private static WellCompositeDto Convert(WellComposite entity)
         {
             var dto = entity.Adapt<WellCompositeDto>();
             return dto;
         }
     }
+#nullable disable
 }
diff --git a/AsbCloudWebApi.Tests/ServicesTests/WellCompositeRepositoryTest.cs b/AsbCloudWebApi.Tests/ServicesTests/WellCompositeRepositoryTest.cs
new file mode 100644
index 00000000..ef4b7f55
--- /dev/null
+++ b/AsbCloudWebApi.Tests/ServicesTests/WellCompositeRepositoryTest.cs
@@ -0,0 +1,80 @@
+using AsbCloudApp.Data;
+using AsbCloudApp.Repositories;
+using Moq;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace AsbCloudWebApi.Tests.ServicesTests
+{
+    public class WellCompositeRepositoryTest
+    {
+        private readonly Mock<IWellCompositeRepository> wellCompositeRepository;
+
+        private static List<WellCompositeDto> Data = new List<WellCompositeDto> {
+            new WellCompositeDto {
+                IdWell = 90,
+                IdWellSrc = 4,
+                IdWellSectionType =  2
+            },
+            new WellCompositeDto
+            {
+                IdWell = 90,
+                IdWellSrc = 4,
+                IdWellSectionType = 3
+            },
+             new WellCompositeDto {
+                 IdWell = 90,
+                 IdWellSrc = 44,
+                 IdWellSectionType = 6
+             },
+             new WellCompositeDto {
+                 IdWell = 4,
+                 IdWellSrc = 4,
+                 IdWellSectionType = 6
+             }
+        };
+
+        public WellCompositeRepositoryTest()
+        {
+            wellCompositeRepository = new Mock<IWellCompositeRepository>();
+
+            wellCompositeRepository.Setup(x => x.GetAsync(It.IsAny<int>(), It.IsAny<CancellationToken>()))
+                .Returns((int idWell, CancellationToken token) => {
+                    var data = Data.Where(x => x.IdWell == idWell);
+                    return Task.FromResult(data);
+                });
+
+            wellCompositeRepository.Setup(x => x.SaveAsync(It.IsAny<int>(), It.IsAny<IEnumerable<WellCompositeDto>>(), It.IsAny<CancellationToken>()))
+                .Returns((int idWell, IEnumerable<WellCompositeDto> wellComposites, CancellationToken token) => {
+                    Data.AddRange(wellComposites);
+                    return Task.FromResult(Data.Count);
+                });
+        }
+
+        [Fact]
+        public async Task GetAsync_returns_WellCompositeDto()
+        {
+            var data = await wellCompositeRepository.Object.GetAsync(90, CancellationToken.None);
+            Assert.NotNull(data);
+        }
+
+        [Fact]
+        public async Task SaveAsync()
+        {
+            var cnt = Data.Count;
+            var dtos = new List<WellCompositeDto> { 
+                new WellCompositeDto {
+                    IdWell = 4,
+                    IdWellSrc = 44,
+                    IdWellSectionType = 6 
+                }
+            };
+
+            var result = await wellCompositeRepository.Object.SaveAsync(4, dtos, CancellationToken.None);
+            Assert.True(cnt < Data.Count);
+        }
+    }
+}
diff --git a/AsbCloudWebApi/Controllers/WellCompositeController.cs b/AsbCloudWebApi/Controllers/WellCompositeController.cs
index 398530d5..c6f5c9cf 100644
--- a/AsbCloudWebApi/Controllers/WellCompositeController.cs
+++ b/AsbCloudWebApi/Controllers/WellCompositeController.cs
@@ -1,4 +1,5 @@
 using AsbCloudApp.Data;
+using AsbCloudApp.Repositories;
 using AsbCloudApp.Services;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
@@ -8,6 +9,7 @@ using System.Threading.Tasks;
 
 namespace AsbCloudWebApi.Controllers
 {
+#nullable enable
     /// <summary>
     /// Композитная скважина
     /// </summary>
@@ -16,12 +18,12 @@ namespace AsbCloudWebApi.Controllers
     [Authorize]
     public class WellCompositeController : ControllerBase
     {
-        private readonly IWellCompositeService wellCompositeService;
+        private readonly IWellCompositeRepository wellCompositeRepository;
         private readonly IWellService wellService;
 
-        public WellCompositeController(IWellCompositeService wellCompositeService, IWellService wellService)
+        public WellCompositeController(IWellCompositeRepository wellCompositeRepository, IWellService wellService)
         {
-            this.wellCompositeService = wellCompositeService;
+            this.wellCompositeRepository = wellCompositeRepository;
             this.wellService = wellService;
         }
 
@@ -39,7 +41,7 @@ namespace AsbCloudWebApi.Controllers
             if (!await CanUserAccessToWellAsync(idWell, token).ConfigureAwait(false))
                 return Forbid();
 
-            var result = await wellCompositeService.GetAsync(idWell, token).ConfigureAwait(false);
+            var result = await wellCompositeRepository.GetAsync(idWell, token).ConfigureAwait(false);
             return Ok(result);
         }
 
@@ -57,7 +59,7 @@ namespace AsbCloudWebApi.Controllers
             if (!await CanUserAccessToWellAsync(idWell, token).ConfigureAwait(false))
                 return Forbid();
 
-            var result = await wellCompositeService.SaveAsync(idWell, wellComposites, token).ConfigureAwait(false);
+            var result = await wellCompositeRepository.SaveAsync(idWell, wellComposites, token).ConfigureAwait(false);
             return Ok(result);
         }
 
@@ -68,4 +70,5 @@ namespace AsbCloudWebApi.Controllers
                 idWell, token).ConfigureAwait(false);
         }
     }
+#nullable disable
 }