diff --git a/src/pages/Telemetry/Operations/OperationsChart.jsx b/src/pages/Telemetry/Operations/OperationsChart.jsx
index a0e7e82..3a20be2 100644
--- a/src/pages/Telemetry/Operations/OperationsChart.jsx
+++ b/src/pages/Telemetry/Operations/OperationsChart.jsx
@@ -8,7 +8,7 @@ import '@styles/detected_operations.less'
 
 const displayNumber = makeDisplayValue({ fixed: 2 })
 
-const makeTooltipRender = (category) => ([{ data: [data] }]) => (
+export const makeTooltipRender = (category) => ([{ data: [data] }]) => (
     <div className={'detected-operations-tooltip'}>
         <span className={'tooltip-label'}>{data.operationCategory?.name}</span>
         <span className={'tooltip-label'}>{formatDate(data.dateStart, undefined, 'DD.MM.YYYY')}</span>
@@ -21,12 +21,12 @@ const makeTooltipRender = (category) => ([{ data: [data] }]) => (
             <GridItem row={2} col={3}>{displayNumber(data.depthEnd)} м</GridItem>
         </Grid>
         <Grid style={{ marginTop: 0 }}>
-            <GridItem row={1} col={1}>{category?.name ?? 'Ключ'}:</GridItem>
+            <GridItem row={1} col={1}>{category?.keyValueName ?? 'Ключ'}:</GridItem>
             <GridItem row={1} col={2}>{displayNumber(data.value)}</GridItem>
-            <GridItem row={1} col={3}>{category?.unit ?? '----'}</GridItem>
+            <GridItem row={1} col={3}>{category?.keyValueUnits ?? '----'}</GridItem>
             <GridItem row={2} col={1}>Цель:</GridItem>
             <GridItem row={2} col={2}>{displayNumber(data.operationValue?.targetValue)}</GridItem>
-            <GridItem row={2} col={3}>{category?.unit ?? '----'}</GridItem>
+            <GridItem row={2} col={3}>{category?.keyValueUnits ?? '----'}</GridItem>
         </Grid>
     </div>
 )
diff --git a/src/pages/Telemetry/Operations/index.jsx b/src/pages/Telemetry/Operations/index.jsx
index 8306be8..b04f835 100644
--- a/src/pages/Telemetry/Operations/index.jsx
+++ b/src/pages/Telemetry/Operations/index.jsx
@@ -70,7 +70,11 @@ const Operations = memo(() => {
         invokeWebApiWrapperAsync(
             async () => {
                 const categories = arrayOrDefault(await DetectedOperationService.getCategories())
-                setCategories(categories.map(({ id, name }) => ({ value: id, label: name })))
+                setCategories(categories.map((category) => ({
+                    ...category,
+                    value: category.id,
+                    label: category.name,
+                })))
             },
             setIsLoading,
             'Не удалось загрзуить категории операций'
diff --git a/src/pages/WellOperations/Tvd/TLChart.jsx b/src/pages/WellOperations/Tvd/TLChart.jsx
index 7050c87..84b431d 100644
--- a/src/pages/WellOperations/Tvd/TLChart.jsx
+++ b/src/pages/WellOperations/Tvd/TLChart.jsx
@@ -11,8 +11,13 @@ import { DetectedOperationService } from '@api'
 import { unique } from '@utils/filters'
 import { formatDate } from '@utils'
 
+import { makeTooltipRender } from '@pages/Telemetry/Operations/OperationsChart'
 import { makeGetColor } from '.'
 
+import '@styles/d3.less'
+import '@styles/tvd.less'
+import '@styles/detected_operations.less'
+
 const defaultOffset = { left: 40, right: 20, top: 20, bottom: 20 }
 const zeroDate = moment('2000-01-01 00:00:00')
 
@@ -42,10 +47,13 @@ export const TLChart = memo(({
     backgroundColor = '#0000',
     barHeight = 15,
     offset = defaultOffset,
+    tooltipSize = { width: 200, height: 220 },
 }) => {
     const [isLoading, setIsLoading] = useState(false)
     const [svgRef, setSvgRef] = useState()
     const [data, setData] = useState()
+    const [selected, setSelected] = useState()
+    const [tooltipPos, setTooltipPos] = useState({ x: 0, y: 0 })
 
     const getColor = useMemo(() => makeGetColor(data?.map((row) => row.idCategory).filter(unique)), [data])
 
@@ -124,22 +132,54 @@ export const TLChart = memo(({
             .attr('width', (d) => xAxis(d.endTime) - xAxis(d.startTime))
             .attr('height', barHeight)
             .attr('fill', (d) => getColor(d.idCategory))
+            .on('mouseover', (e, data) => {
+                d3.select(svgRef).select('.chart-area')
+                .selectAll('rect')
+                .filter((d) => d.idCategory === data.idCategory)
+                .attr('stroke-width', '2px')
+                const rect = e.target.getBoundingClientRect()
+                setTooltipPos({ x: rect.x, y: rect.y })
+                setSelected(data)
+            })
+            .on('mouseout', (e, data) => {
+                d3.select(svgRef).select('.chart-area')
+                    .selectAll('rect')
+                    .filter((d) => d.idCategory === data.idCategory)
+                    .attr('stroke-width', '0')
+                setSelected(null)
+            })
     }, [svgRef, xAxis, yAxis, data, getColor])
 
+    const tooltipStyle = useMemo(() => {
+        return {
+            ...tooltipSize,
+            left: tooltipPos.x - tooltipSize.width - 8,
+            top: tooltipPos.y - tooltipSize.height / 2 + barHeight / 2,
+        }
+    }, [tooltipPos, tooltipSize, barHeight])
+
     return (
         <div className={'tvd-right'} ref={rootRef}>
-            <LoaderPortal show={isLoading} style={{ width: '100%', flexGrow: 1 }}>
+            <LoaderPortal show={isLoading} className={'asb-d3-chart'}>
+                {selected && (
+                    <div className={'tl-op-tooltip'} style={tooltipStyle}>
+                        <div className={'tooltip right'}>
+                            {makeTooltipRender(selected.operationCategory)([{ data: [selected] }])}
+                        </div>
+                    </div>
+                )}
                 {data ? (
-                    <svg ref={setSvgRef} width={'100%'} height={'100%'}>
+                    <svg className={'tl-op-chart'} ref={setSvgRef} width={'100%'} height={'100%'}>
                         <g className={'axis x'} transform={`translate(${offset.left}, ${offset.top})`} />
                         <g className={'axis y'} transform={`translate(${offset.left}, ${offset.top + barHeight})`} />
-                        <g className={'chart-area'} transform={`translate(${offset.left}, ${offset.top + barHeight})`} stroke={'none'} />
+                        <g className={'chart-area'} transform={`translate(${offset.left}, ${offset.top + barHeight})`} stroke={'red'} strokeWidth={'0'} />
                         <rect
                             x={offset.left}
                             y={offset.top}
                             width={Math.max(width - offset.left - offset.right, 0)}
                             height={Math.max(height - offset.top - offset.bottom, 0)}
                             fill={backgroundColor}
+                            pointerEvents={'none'}
                         />
                     </svg>
                 ) : (
diff --git a/src/styles/d3.less b/src/styles/d3.less
index 5701d12..be70bbe 100644
--- a/src/styles/d3.less
+++ b/src/styles/d3.less
@@ -41,7 +41,7 @@
 
     
         &.bottom {
-            margin-top: 0;
+            margin-bottom: @arrow-size;
 
             &::after {
                 border-top-color: @bg-color;
@@ -50,6 +50,24 @@
                 margin-left: -@arrow-size;
             }
         }
+
+        &.left {
+            margin-left: @arrow-size;
+            &::after {
+                border-right-color: @bg-color;
+                top: 50%;
+                right: 100%;
+            }
+        }
+
+        &.right {
+            margin-right: @arrow-size;
+            &::after {
+                border-left-color: @bg-color;
+                top: 50%;
+                left: 100%;
+            }
+        }
         
         & .tooltip-content {
             overflow: hidden;
diff --git a/src/styles/tvd.less b/src/styles/tvd.less
index 4f61f63..65beb38 100755
--- a/src/styles/tvd.less
+++ b/src/styles/tvd.less
@@ -86,6 +86,17 @@
     justify-content: center;
 }
 
+.tl-op-tooltip {
+    position: absolute;
+    pointer-events: none;
+}
+
+.tl-op-chart {
+    & .chart-area > rect {
+        transition: stroke-width .25s ease-in-out;
+    }
+}
+
 .tl-pie {
     display: flex;
     flex-direction: column;