diff --git a/src/components/LiveLog.tsx b/src/components/LiveLog.tsx
new file mode 100644
index 0000000..3e2a074
--- /dev/null
+++ b/src/components/LiveLog.tsx
@@ -0,0 +1,86 @@
+import { createContext, ReactNode, useCallback, useContext, useMemo, useState } from 'react'
+import { CloseOutlined } from '@ant-design/icons'
+import { Button } from 'antd'
+
+import { FunctionalValue, getFunctionalValue, isDev } from '@utils'
+
+import '@styles/components/live_log.less'
+
+export type LogType = 'info' | 'warn' | 'error' | 'critical'
+export type VarType = { value: any, type: LogType }
+
+export type LogContext = (varName: string, value: FunctionalValue<(prev?: any) => any>, type?: FunctionalValue<(prev: LogType) => LogType>) => void
+
+export const LiveLogContext = createContext<LogContext>(() => {})
+
+const renderVar = (name: string, value: any, type: LogType, remove: (name: string) => void) => {
+    if (typeof value === 'object')
+        value = JSON.stringify(value)
+
+    return (
+        <div className={`log-row log-${type}`}>
+            <span className={'log-close'} title={'Удалить значение'} onClick={() => remove(name)}><CloseOutlined /></span>
+            <span className={'log-name'}>{name}:</span>
+            <span className={'log-value'}>{String(value)}</span>
+        </div>
+    )
+}
+
+export type LiveLogProps = {
+    placement?: 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right'
+    children: JSX.Element
+}
+
+export const LiveLog = ({ placement = 'top-left', children }: LiveLogProps) => {
+    if (!isDev()) return children
+
+    const [logMsgs, setLogMsgs] = useState<Record<string, VarType | undefined>>({})
+
+    const clear = useCallback(() => setLogMsgs({}), [])
+
+    const removeVar = useCallback((name: string) => {
+        setLogMsgs((prev) => {
+            if (!(name in prev)) return prev
+            const newMsgs = { ...prev }
+            delete newMsgs[name]
+            return newMsgs
+        })
+    }, [])
+
+    const log: LogContext = useCallback((varName, value, type) => {
+        setLogMsgs((prev) => {
+            const newValue = getFunctionalValue(value)(prev[varName]?.value)
+            const newType = getFunctionalValue(type)(prev[varName]?.type)
+            return {
+                ...prev,
+                [varName]: {
+                    type: newType || 'info',
+                    value: newValue,
+                }
+            }
+        })
+    }, [])
+
+    const logInner = useMemo(() => Object.entries(logMsgs).map(([name, value]) => value && renderVar(name, value.value, value.type, removeVar)), [logMsgs, removeVar])
+    const isEmpty = useMemo(() => Object.keys(logMsgs).length <= 0, [logMsgs])
+    return (
+        <LiveLogContext.Provider value={log}>
+            {isEmpty || (
+                <div className={`log-box log-box-${placement}`}>
+                    <div className={'log-box-label'}>
+                        <span className={'log-box-label'}>Непрерывные значения</span>
+                        <Button type={'link'} title={'Очистить'} onClick={clear}><CloseOutlined /></Button>
+                    </div>
+                    <div className={'log-box-content'}>
+                        {logInner}
+                    </div>
+                </div>
+            )}
+            {children}
+        </LiveLogContext.Provider>
+    )
+}
+
+export const useLiveLog = () => useContext(LiveLogContext)
+
+export default LiveLog
diff --git a/src/index.tsx b/src/index.tsx
index 12aaff2..41c64e4 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -3,6 +3,7 @@ import { ConfigProvider } from 'antd'
 import { createRoot } from 'react-dom/client'
 import React from 'react'
 
+import LiveLog from '@components/LiveLog'
 import { getUser } from '@utils'
 import { OpenAPI } from '@api'
 
@@ -22,7 +23,9 @@ const root = createRoot(container)
 root.render(
     <React.StrictMode>
         <ConfigProvider locale={locale}>
-            <App />
+            <LiveLog>
+                <App />
+            </LiveLog>
         </ConfigProvider>
     </React.StrictMode>
 )
diff --git a/src/pages/Well/Telemetry/TelemetryView/index.jsx b/src/pages/Well/Telemetry/TelemetryView/index.jsx
index 7bd4e13..9647f99 100644
--- a/src/pages/Well/Telemetry/TelemetryView/index.jsx
+++ b/src/pages/Well/Telemetry/TelemetryView/index.jsx
@@ -33,6 +33,7 @@ import SpinPicDisabled from '@images/SpinDisabled.png'
 
 import '@styles/pages/telemetry_view.less'
 import '@styles/pages/message.less'
+import { useLiveLog } from '@asb/components/LiveLog'
 
 const { Option } = Select
 
@@ -90,6 +91,8 @@ const TelemetryView = memo(() => {
 
     const [archiveMode, setArchiveMode] = useState(false)
 
+    const log = useLiveLog()
+
     const onStatusChanged = useCallback((value) => updateWell({ idState: value }), [well])
 
     const handleDataSaub = useCallback((data, replace = false) => {
@@ -116,6 +119,7 @@ const TelemetryView = memo(() => {
     }, [])
 
     const onWheel = useCallback((e) => {
+        log('Wheel count', (prev) => prev ?  prev + 1 : 1, 'warn')
         if (!archiveMode && e.deltaY < 0) {
             setArchiveMode(true)
         } else if (archiveMode) {
diff --git a/src/styles/components/live_log.less b/src/styles/components/live_log.less
new file mode 100644
index 0000000..cd80c23
--- /dev/null
+++ b/src/styles/components/live_log.less
@@ -0,0 +1,53 @@
+.log-box {
+    position: fixed;
+    z-index: 1000;
+    background-color: rgba(0,0,0,.5);
+    border-radius: 5px;
+    padding: 10px;
+    color: white;
+    display: flex;
+    flex-direction: column;
+    align-items: stretch;
+    overflow-x: hidden;
+    width: 300px;
+
+    &.log-box-top-left { top: 10px; left: 10px; }
+    &.log-box-top-right { top: 10px; right: 10px; }
+    &.log-box-bottom-left { bottom: 10px; left: 10px; }
+    &.log-box-bottom-right { bottom: 10px; right: 10px; }
+
+    & .log-box-label {
+        display: flex;
+        justify-content: space-between;
+
+        & span {
+            font-size: 1.25em;
+        }
+    }
+
+    & .log-box-content {
+        flex: 1;
+        display: flex;
+        flex-direction: column;
+        align-items: stretch;
+        gap: 5px;
+
+        & .log-row {
+            display: flex;
+            gap: 10px;
+
+            & .log-close {
+                cursor: pointer;
+            }
+
+            & .log-name {
+                text-decoration: underline;
+            }
+
+            &.log-info { color: white }
+            &.log-warn { color: #faad14 }
+            &.log-error { color: #ff4d4f }
+            &.log-critical { color: #ff4d4f; font-weight: bolder; }
+        }
+    }
+}