Field-Geologic and Hydrochemical Monitoring of Impermeability

Topic:
Field-Geologic and Hydrochemical
Monitoring of Impermeability
Kasimovsky UGS
Presenter: S.L. KOSTIKOV
Deputy Director for Geology,
Kasimovsky UGS
City of Kasimov, 2013
Reference Aquifers Layout
Quaternary deposits
Podolsk-Myachkovskian aquifer
Kashirsky aquifer
Oksky aquifer
Dankovo-Lebedyansky aquifer
Zadonsk-Yeletsky aquifer
Evlano-Livensky aquifer
Geophysical reference point
Khvorostansky aquifer
Main hood
Upper sand bench
Shale break
Bottom sand bench
Bottom clay bench
2
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Reference Aquifers Characteristics
3
Aquifer
Depth, m
Rock character
Deposit water character
EvlanoLivensky
10-15
Limestone with different clay Saline calcium chloride type with up to
content, slightly fractured and 70 g/l mineralization, 1.03 g/cm3 water
cavernous in certain sections,
density, 30-40 cm3/l baseline gas
gypsified in other sections
saturation
ZadonskYeletsky
88-93
Limestone with different clay Saline magnesium-chlorate type with
content, slightly fractured and up to 60 g/l mineralization, 1.02 g/cm3
cavernous in certain sections, water density, 30-40 cm3/l baseline gas
gypsified and dolomitized in
saturation
other sections
DankovoLebedyansky
101-123
Dolomite with subordinate
Saline magnesium-chlorate type with
interbeds of limestone, marls up to 40 g/l mineralization, 1.02 g/cm3
and clays
water density, 30-40 cm3/l baseline gas
saturation
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Reference Aquifers Characteristics
4
Aquifer
Depth, m
Rock character
Deposit water character
Oksky
30
Fractured limestone capped
with Vereiskian clays of 25 m
thickness
Saline sodium sulfate type with up
to 10 g/l mineralization, 1.01 g/cm3
water density, 30-40 cm3/l baseline
gas saturation
Kashirsky
69-78
PodolskMyachkovskian
50
Limestone with subordinate
Calcium bicarbonate type with up
interbeds of dolomite, marls and to 2.5 g/l mineralization, 1 g/cm3
clays
water density, 20-30 cm3/l baseline
gas saturation
Limestone with subordinate
interbeds of dolomite, marls and
clays, strongly dolomotized,
fractured and cavernous in
certain sections
Calcium magnesium bicarbonate
type with up to 0.18-1.19 g/l
mineralization, 1 g/cm3 water
density, 20-30 cm3/l baseline gas
saturation
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Field-geological Monitoring of Containment
Field-geological monitoring of containment includes various
methods of control associated with measurements and observation
of USG operation parameters:
• Pressure (level) measurements at monitoring wells, operating wells
and observation wells
• Gas inventory count in UGS
• Visual control of surface
• Inspection of wells annular space
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Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Fluid level dynamics in Oksky Reference Aquifer
Jan. ‘11
July ‘10
Jan. ‘10
July ‘09
Jan. ‘09
July ‘08
Jan. ‘08
Level, m
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Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Fluid level dynamics in Kashirsky Reference Aquifer
July ‘10
Jan. ‘10
July ‘09
Jan. ‘09
July ‘08
Jan. ‘08
Level, m
7
well 365
well 366
well 369
well 370
well 373
well 375
well 378
well 379
well 381
well 382
well 384
well 386
well 387
well 389
well 391
well 392
well 396
well 397
well 398
well 399
well 400
well 454
well 458
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Fluid level dynamics in Podolsk-Myachkovskian Reference Aquifer
No significant fluctuations of water levels
observed in monitoring wells
July ‘10
Jan. ‘10
July ‘09
Jan. ‘09
July ‘08
Jan. ‘08
Level, m
8
well 377
well 380
well 383
well 385
well 386
well 388
well 393
well 394
well 395
well 401
well 402
well 403
well 404
well 405
well 406
well 407
well 408
well 451
well 452
well 455
well 459
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Wellhead pressure / fluid level dynamics at observation wells at reservoir
bed located beyond gas-water contact area boundaries
bottom hole
pressure (kg/cm2)
Level of fluid
(m)
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Jan. ‘11
9
Sept. ‘10
May ‘10
Jan. ‘10
Sept. ‘09
May ‘09
Jan. ‘09
Sept. ‘08
May ‘08
Jan. ‘08
Sept. ‘07
May ‘07
Jan. ‘07
Sept. ‘06
May ‘06
Jan. ‘06
Sept. ‘05
May ‘05
Jan. ‘05
Date of measurement (month, year)
Wellhead pressure / fluid level dynamics at observation wells at reservoir bed
located inside gas-water contact area boundaries
bottom hole pressure
(kg/cm2)
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Jan. ‘11
Sept. ‘10
May ‘10
Jan. ‘10
Sept. ‘06
May ‘06
Jan. ‘09
Sept. ‘08
May ‘08
Jan. ‘05
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Date of measurement (month, year)
Gas Saturation Distribution as of March 2010
Gas saturation
On-line
simulation
model
of
Kasimovsky UGS was created in
Gazprom VNIIGAZ research institute.
Примечание: отчет по форме 23-газ по
состоянию на 01.01.2011 The
г. model shows that the gas-in-place
is the same as gas reserves with
tolerance not exceeding 1%.
11
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Conclusions
Data obtained from multi-year geological field survey, hydrochemical studies and other type
of research show that at Kasimovsky UGS the overall volume of gas in located in the storage
facility.
Gas flows to overlying deposits and beyond the structure was not observed.
Currently Kasimovsky UGS has sufficient level of containment.
Примечание: отчет по форме 23-газ по
состоянию на 01.01.2011 г.
12
Field-geologic and hydrochemical monitoring of impermeability Kasimovsky UGS
Thank you for your
attention