Tasks solved by  FracArray technology 

Case study #1: Monitoring of hydraulic fracturing

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West Siberia oilfield .

Source Mechanisms. Directions of the main axes of stress during hydraulic fracturing

West Siberia oilfield

Case study #2: Example of unilateral crack

 Komi, Russia. oilfield

Case study #3: Experimental verification of reliability of the FracArray technology results.  Case of the big crack during fracturing

Depth 2538 m, Crack length 510 m, Tight oil (Bashen formation), West Siberia oilfield .

FracArray mapping of microseismic events for Step 1& Step 2 in quasi-real time

The oil influence of well #41 fell down from 60 tons per day to 40 tons per day at the next day after fracturing in well #39

Case study #4: Mapping of filtration water channels during hydraulic fracturing in oilfield

Case study #5: Multistage Fracturing

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West Siberia oilfield .

A summary of the results of monitoring of hydraulic fracturing in 7 ports.

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West Siberia oilfield .

The results of  monitoring of hydraulic fracturing in the 1st port.

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The density of distribution of the sources of seismic emission projection on the horizontal plane of – a) b) and vertical c) and d)

West Siberia oilfield 

Case study #6: Waterflooding

Monitoring displacement front during fluid injection in the layer.

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Space image . Projection of  well sources of seismic emission and sensors  on the day surface. Depth 2403. West Siberia oilfield .

Distribution of flooding, in accordance with the extension of the zone of seismic emission. Step – 100 hours.

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Top view (center), east view (right) and north view (bottom) of the microseismic cloud (A) 100 hr, (B) 200 hr, (С) 300 hr, (D) 400 hr, (E) 500 hr, (F) 600 hr after the start of the injection

Case study #7: Estimation  of drainage area of deposits 

The layout of surface sensors and  oil wells . Time data collection  – 30 days.

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West Siberia oilfield .

Case study #8: Microseismic monitoring of hydraulic fracturing and full passive monitoring (green color)

Case study #9: Estimation of ports productivity after multistage hydraulic fracturing

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3D image of microseismic monitoring the multistage fracturing. Grid step 50m.West Siberia oilfield.  Depth – 2700 m.

3D image of the long-duration passive microseismic monitoring after multistage fracturing. Grid step 50m. West Siberia oilfield .

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3D image of the long-duration passive microseismic monitoring after multistage fracturing with fault-block structure mapping. Grid step 50m. West Siberia oilfield .

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3D image of microseismic monitoring of multistage fracturing with fault-block structure mapping.West Siberia oilfield .

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3D image of microseismic monitoring of multistage fracturing with fault-block structure mapping. Grid step 50m. West Siberia oilfield .

2D image (map) of the long-duration passive microseismic monitoring after microseismic monitoring of  multistage fracturing with pre-existing fracture after  CSPD-PSTM 3D processing .West Siberia oilfield .

Vertical slice of pre-existing fracture according CSDP CSP-PSTM 3D processing along profile line, passing through the hole.

Case study #10: Identification of the fault-block structure near a bottom-hole

Two weeks of data collection per well.

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Layout of wells and surface sensors positions. Wells #3,5 – equipped with pumping units. Well #30 – without pumping units. Kazakhstan

3D view of microseismic events near borehole bottom.

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Grid size – 50 m. Well #5, Kazakhstan

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Grid size – 50 m. Kazakhstan

Grid size – 50 m., Kazakhstan

 Kazakhstan

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Kazakhstan

Grid size- 50 m. Kazakhstan

Case study #11: Integrated interpretation of pre-existing natural fracture  and results of CSPD long-duration microseismic monitoring

Layout map of surface receivers array and the wells.

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Two week registration per well. Kazakhstan,  Array 300×300 m.

3D view of microseismic events near bottom-hole, well #9.  Mapping of the fault-block structure near the bottom of wells. Two weeks of observations.

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Grid step -50 m., well #9 with oil pumping unit. Kazakhstan

Microseismic event distribution with 3D visualization of seismic moment tensor on principal stress axes. Well #9.

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Grid size – 50 m.

CSPD–maps of pre-existing fracture

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Time section of CSPD-diffractor cube (pre-existing fracture) & results of long-duration passive microseismic monitoring.

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Wells #9, Kazakhstan. Oil inflow 150 m3 per day

3D view of results of long-duration passive microseismic monitoring with top of Paleozoic.

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Wells #9, Kazakhstan. Oil inflow 150 m3 per day

Projection of a cloud of microseismic events to an isochronous surface granite intrusion

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Wells #16, Kazakhstan. Oil inflow 102 m3 per day

3D view of results  microseismic events, CSPD-diffractor cube and cube of microseismic stresses

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Wells #9,  Kazakhstan. Oil inflow 150 m3 per day

3D view of CSPD-diffractor cube and cube of microseismic stresses

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Wells #9,  Kazakhstan. Oil inflow 150 m3 per day

3D view of results  microseismic events

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Wells #9, 2013, Kazakhstan. Oil inflow 150 m3 per day

3D view of CSPD-diffractor cube and cube of microseismic stresses near the structural surfaces of middle Triassic and roof productive horizon T2

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Wells #9, Kazakhstan. Oil inflow 150 m3 per day

Case study #12: Control of underground gas storage