Bovanenkovo

Yamal Major Field

BOVANENKOVO FIELD

BovanenkovoBovanenkovo field is a base field of the field is a base field of the YamalYamalpeninsula at present time. All the scientific and peninsula at present time. All the scientific and

technological tasks of technological tasks of YamalYamal fields development fields development were solved by VNIIGAZ. were solved by VNIIGAZ.

Explored gas reserves of Explored gas reserves of BovanenkovoBovanenkovo field exceed field exceed 3.5 3.5 TcmTcm . Most part of them refer to . Most part of them refer to

AptApt --CenomanianCenomanian deposits. deposits. They will start the fields developmentThey will start the fields development

Geological section

Ю Р

С К

А Я

НИЖНИЙ

СРЕДНИЙВЕРХ

М Е

Л О

В А

ЯН И

Ж Н

И Й

В Е

Р Х

Н И

ЙСЕНОМАН

МАРРЕСАЛПНИЙ

А Л Ь

БА

П Т

Б

А Р

Р Е

МБЕРРИАС

-ГОТЕРИВ

А Х

С К

А Я

ТАНОПЧИНСКАЯ

СИСТЕМА

ОТДЕЛ

ЯРУС

СВИТА

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

Ю

Ю

ЮЮ

ЮЮ

БЯБЯБЯТПТП

ТП

ТП

ТПТПТП

ТП

ТП

ХМХМ

ПК

ПК

ПК

64 121 98 78 83 131 71 100 74 55119 108 73

JUR

AS

SIC

CR

ET

AC

EO

US

BOVANENKOVO FIELD

Proven gas resources, Proven gas resources, BcmBcm

BOVANENKOVO FIELD

32.43450.7TOTAL

32.42579.9II

870.8PK1

I

С2С1of developmentof development

of Resourses, 1982 г.in objectObject

Approved in State CommitteeLayers

PK9, PK10, HM1-2, TP1-6, TP7-8, TP9,

TP10-11

BOVANENKOVO FIELD

Synchronous start of development of layers with diff erent reservoirpressure required to join in same cluster wells with different head pressures. In this case it should be constructed tw o gas gatheringsystems, i.e. low and high pressure.

Optimized strategy of field development based on co nstruction of one gathering system. In this case start of development and the production of each layer are determined by the level of well head pressure.

First layerFirst layer

Second layerSecond layer

Third layerThird layer

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

T, °C-3 -2 -1 0 +1

Tn

Tbf

SCHEME OF PERMAFROSTSCHEME OF PERMAFROST

permafrost rockspermafrost rocks

cooledcooled rocksrocks

meltedmelted rocksrocks

iceice

TnTn –– natural temperaturenatural temperature

ТТbf bf –– experimental of water experimental of water

freezing in rocksfreezing in rocks

-6 -4 -2 0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

T, °C

Tn

Tbf

BOVANENKOVO FIELD

Design of horizontal well

0

200

400

600

800

1000

1200

1400

0 200 400 600 800Horizontal deviation, м

Dep

th, м

ГВКApt

Senoman

130 м

200 м

450 м

850 м

250 м

1380 м

BOVANENKOVO FIELD

Insulated tubingSpecial

refrigerants

Choosing of well construction and well clusters loc ation

Ice content > 40% and thickness > 25 meters.a) Special refrigerants and well with insulated tub ing.b) Move the well clusters

Ice content > 20% and thickness < 25 meters.Well with insulated tubing.

Ice content < 20% or from 20 to 40% and thickness < 10-15 meters.

Well without insulated tubing.

BOVANENKOVO FIELD

Scheme of well clusterScheme of well cluster

BOVANENKOVO FIELD

Hole of well:deviated

subhorizontal

TP1-6Senoman

1-6

PK9-10TP7-11HM1-2

Observing

Well heads for :Well cluster

area

The introduction of new engineering solutions, developed i n VNIIGAZ

into the Bovanenkovo field development will make it possibl e to cut

considerably starting investments, to ensure operation safe ty of wells

and field equipment, to reduce metal content and to meet ecol ogical

requirements. The improvement of economic indices made the

project competitive in the current conditions and allowed con sidering

it as one of the priority targets of Gazprom.

BOVANENKOVO FIELD

The main problems of the The main problems of the YamalYamal resource commercial development resource commercial development

are related to environmental protection. To tackle this problem are related to environmental protection. To tackle this problem JSC JSC

GazpromGazprom has worked out an Advanced research program. The has worked out an Advanced research program. The

program is intended for developing environmentally soun d program is intended for developing environmentally soun d

technologies, minimizing environmental impacts and p reserving antechnologies, minimizing environmental impacts and p reserving an d d

developing unique culture, ethnos and traditional form s of activdeveloping unique culture, ethnos and traditional form s of activ ity of ity of

local nations.local nations.

The results obtained made it possible to conclude th at the The results obtained made it possible to conclude th at the

commercial development of commercial development of YamalYamal gas fields, including the gas fields, including the

construction of gas mains and railway, will not lead to irreversconstruction of gas mains and railway, will not lead to irrevers ible ible

ecological consequences on the peninsulaecological consequences on the peninsula ..

BOVANENKOVO FIELD

THANK YOU

FOR ATTENTION

Carried out in VNIIGAZ investigations showed that maximal technoCarried out in VNIIGAZ investigations showed that maximal technological logical and economic efficiency, minimal environmental impact will proviand economic efficiency, minimal environmental impact will provide:de:

••Construction of one gas gathering system;Construction of one gas gathering system;

••Well commissioning for various objects at equalizing the well heWell commissioning for various objects at equalizing the well head ad pressures;pressures;

••Drilling in the initial period of all the wells in the cluster wDrilling in the initial period of all the wells in the cluster with conservation ith conservation of the idle wells until commencement of production;of the idle wells until commencement of production;

••Opening of each operation object with separate system of wells.Opening of each operation object with separate system of wells.

••For maximal reduction of thermal loading on permafrost it is plaFor maximal reduction of thermal loading on permafrost it is planned to nned to use special thermaluse special thermal--insulation pipes. This allows to reduce the distance insulation pipes. This allows to reduce the distance between the well mouths in one cluster to between the well mouths in one cluster to 20m20m. Successful tests of the . Successful tests of the wells with such pipes have been already underway for several yeawells with such pipes have been already underway for several years at the rs at the field.field.

BOVANENKOVO FIELD