Surgil ESIA Report - Volume III - EKN

Surgil ESIA Report - Volume III
Table A.5: Composition of Condensate Received from Project Gas Fields
Index
Surgil Field East Berdakh Field
(molar proportion, %) (molar proportion, %)
CH 4 6,897 11,600
C 2H 6 4,849 5,172
C 3H 8 9,796 7,499
iC 4H 10 2,908 3,070
nC 4H 10 5,247 5,296
C 5+ 69,872 67,026
Н 2О 0,071 0,069
N 2 0,008 0,028
CO 2 0,352 0,240
Н 2S 0,000 0,000
A.2.4.
Gas Gathering Stations
Following extraction, gas and condensate are piped from the wells to one of six Gas Gathering Stations
(GGS). Each site and configuration of the GGS will be slightly different; however each one will be
equipped with a main inlet pipe collection block, an overload relief valve to protect against excess pressure,
a flare for periods of abnormal operation, drainage facilities, lighting arrestors and an operator house. Each
GGS will collect gas from 20 individual wells.
The exact design and layout of the gas gathering system is based on the average operational production,
expected field pressure of wells and also thermal and pressure conditions at the well heads. Each one will
be developed in accordance with international construction norms and regulations. Table A.6 provides a
summary of key features for a GSS.
Once collected, the gas and condensate is transported via pipeline to the Surgil CGTU. Maximum distance
from GGS to CGTU is 4km.
Table A.6: Key features of GGS
Infrastructure
Dimensions
Plot size (hectares) 0.14 – 0.20
Building area (hectares) 0.03 – 0.04
Building density (%) 20-25
Area of flare facilities (hectares) 0.79
Source: JSC “O” Zlitineftgaz – PFS “Complex Surgil Field construction with extraction of valuable components!”
A.2.5.
Complex Gas Treatment Unit
Figure A.2: presents the Surgil CGTU Layout.
254793/RGE/GEV/03/01/03/08/2011
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