Surgil ESIA Report - Volume III - EKN

“O’ZLITINEFTGAZ” PC
PFS “Surgil field complex costruction with valuable
components retrieval”
The site of 0.36 hectares, on which there is arranged dike by 0.8m height with two
entrances from opposite sides is set aside for well. There are equipped working station,
station for the unit-lift and platform under legs of the lift rig, and also 4 concrete anchors for
rig guy on the wellhead. The well is equipped with a torch for a periodic well blowing-out.
Thus, if necessary it is possible to make repair works on wells, works on increase of wells
productivity.
Technological decisions for natural gas gathering and field processing systems are
the basis of the field construction project.
Gathering of wells production of Surgil field in volume 3.0·10 9 m 3 per year is offered
to carry out on three gathering stations (GGS) located in the field area. Then, gas from GGS
and from 7 wells to GS, transfers through three collectors to Surgil CGTU for treatment
(Figure 2).
Preliminary hydraulic calculation of loops is executed on wells average rate of yield
280.1·10 3 m3/days. Gas pressure and temperature in the beginning of wells loops make
8.45MPa and 50°C relatively. Maximum length of loop of one well is 2km. Quantity of
production wells - 54.
According to results of hydraulic calculation pressure loss make 0.65MPa if the pipe
diameter is 108х6mm and maximum length of loop is 2km.
The control of wells operation is made by means of periodic measurement of the rate
of yield of oil-gas condensate mix, amount of taken out liquid hydrocarbons (oil plus gas
condensate) and formation water, with application of mobile measurement installation.
There are equipped 54 wells for extraction of 3 billion cubic m per year (there is also
considered the variant of 36 wells for 2 milliard extraction).
Loops – 54 wells
Pressure – 10.78MPa
Diameter – 108mm.
Volume 2. Part 1. EIS Project for Surgil field construction
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