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Micro-Seismic Monitoring for Geothermal and Shale gas Developments Micro-Seismics As the UK’s energy production moves towards sustainable, de-carbonised methods, energy producers are increasingly being attracted to exploration and exploitation of non-conventional energy resources. In the UK non-conventional, typically, refers to the extraction of shale gas and the generation of geo-thermal energy. TerraDat’s expertise in these fields is twofold: not only can we assist with exploration and assessments of a particular resource thorough our conventional geophysical methodology, but we now offer a new, micro-seismic monitoring, service. Building on TerraDat’s extensive seismic experience and utilising new 32-bit recorders and surface sensors, we are set up to monitor micro-seismic events before, during, and after drilling operations. The objective is to establish a robust baseline of data before resource development and subsequently deliver a constant monitoring service for geothermal and gas extraction prospects. The data are collected and sent real-time to the processing office where incident seismic events are assessed before any alerts are issued to the project stakeholders if preset thresholds are crossed. Baseline Surveys Micro-seismic Monitoring 3D data collection Magnitude Measurements Telemetric Connectivity Technical Note , , , , , Shear Wave Velocity (m/s) 100 130 160 190 220 250 280 310 340 370 400 430 460 490 520 550 580 Increasing ground stif fness 410m/s 810m/s 810 95 100 105 110 Elevation (m) 0m 10m 20m 30m 40m 810m/s 2340m/s MASW S-Wave Model P-wave velocity Model Resistivity tomography section 20 25 30 35 40 45 50 55 60 Chainage (m) 285 290 295 Elevation (m) Increasing resistivity Conductive till Resistive bedrock Surface Peat/Gravel P-wave refraction - Layered velocity model Seismic refraction survey setup TerraDat (UK) Ltd - Tel (08707 303050) www.terradat.co.uk *Cost Effective *Non-invasive *Rapid Ground Coverage *Environmentally Friendly *Swift Mobilisation/Global Coverage Contact Simon Hughes for more info; [email protected]

Microseismic Monitoring by TerraDat UK

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Building on TerraDat’s extensive seismic experience and utilising new 32-bit recorders and surface sensors, we are set up to monitor micro-seismic events before, during, and after drilling operations. The objective is to establish a robust baseline of data before resource development and subsequently deliver a constant monitoring service for geothermal and gas extraction prospects. The data are collected and sent real-time to the processing office where incident seismic events are assessed before any alerts are issued to the project stakeholders if preset thresholds are crossed.

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Page 1: Microseismic Monitoring by TerraDat UK

Micro-Seismic Monitoring for Geothermal andShale gas DevelopmentsM

icro-Seism

icsAs the UK’s energy production moves towards sustainable, de-carbonised methods, energy producers are increasingly being attracted to exploration and exploitation of non-conventional energy resources. In the UK non-conventional, typically, refers to the extraction of shale gas and the generation of geo-thermal energy.

TerraDat’s expertise in these fields is twofold: not only can we assist with exploration and assessments of a particular resource thorough our conventional geophysical methodology, but we now offer a new, micro-seismic monitoring, service.

Building on TerraDat’s extensive seismic experience and utilising new 32-bit recorders and surface sensors, we are set up to monitor micro-seismic events before, during, and after drilling operations. The objective is to establish a robust baseline of data before resource development and subsequently deliver a constant monitoring service for geothermal and gas extraction prospects. The data are collected and sent real-time to the processing office where incident seismic events are assessed before any alerts are issued to the project stakeholders if preset thresholds are crossed.

Baseline Surveys

Micro-seismic Monitoring

3D data collection

Magnitude Measurements

Telemetric Connectivity

TechnicalNote

,

,

,

,

,

Sh

ea

r Wa

ve V

elo

city (m/s)

100

130

160

190

220

250

280

310

340

370

400

430

460

490

520

550

580

Incre

asin

g g

rou

nd

stiffne

ss

410m/s810m/s

810

95

100

105

110

Ele

vatio

n (

m)

0m 10m 20m 30m 40m

810m/s

2340m/sMASW S-Wave Model

P-wave velocity Model

Resistivity tomography section

20 25 30 35 40 45 50 55 60

Chainage (m)

285

290

295

Ele

vation

(m)

Inc

rea

sin

g r

es

isti

vit

y

Conductivetill

Resistivebedrock

SurfacePeat/Gravel

P-wave refraction - Layered velocity model

Seismic refraction survey setup

TerraDat (UK) Ltd - Tel (08707 303050)www.terradat.co.uk

*C

ost E

ffectiv

e

*N

on-in

vasiv

e

*R

apid

Gro

und C

overa

ge

*E

nviro

nm

enta

lly F

riendly

*S

wift M

obilis

atio

n/G

lobal C

overa

ge

Contact Simon Hughes for more info; [email protected]