WT-2 capacity

Planning has conducted flow studies to determine the capacity of WT-2 system with respect to receiving volume from NNG at Halley interconnect. The limiting factors in determining the capacity of this system were the maximum discharge pressure at WT-2 and the average pressure requirements at Valero-Ward pipeline.

WT-2 is able to discharge at a maximum of 1040 psig pressure and the operating pressure range of Valero pipeline in this area is 975-995 psig.
Based on the above conditions WT-2 would be able to deliver only 505 mmcf/d gas to :

Lone-Star Warwink 30 mmcf/d
Valero Ward 115 mmcf/d
Ovasis 138 mmcf/d
Westar-Ward 80 mmcf/d
Valero Pecos 95 mmcf/d
Lonestar Pecos 47 mmcf/d
Total 505 mmcf/d

This flow model indicates that ( assuming main line valve-208 B is closed) WT-2 would be able to receive up to 100 mmcf/d from NNG at Halley interconnect.
The remaining gas supply behind Wt-2 would flow from NGPL-Winkler, EOG, Keystone/ Sid Richardson, Monument and WT-1.

Based on the data obtained from our TW-Firm Data Book the existing committed volume at WT-2 for next five months are:

Aug-01 Sep-01 Oct-01 Nov-01 Dec-01
Comitted volume 582 582 582 565 545
( mmcf/d)

505 mmcf/d capacity:
*** Less USGT at 77 77 77 60 40
WT-2

***. Option-1: 12 mmcf/d could be handle at WT-1 on Aug-01, 21 mmcf/d on Sep-01, 7 mmcf/d
on Oct-01 and the rest through Texas Panhandle Lateral. Capacity is sold at WT-1
on Nov-01 and Dec-01.
. Option-2: Or all through Texas Panhandle Lateral.

From Jan-02 to Jul-02, capacity is not available at WT-2. Sold at 505 mmcf/d maximum capacity.

Capacity availability at WT-1 from Aug-01 to Jul-02 based on 425 mmcf/d :

Aug-01 Sep-01 Oct-01 Nov-01 Dec-01
Available capacity: 12 21 7 -11 -11
Jan-02 Feb-02 Mar-02 Apr-02 May-02
Available capacity: 11 11 26 55 54
Jun-01 Jul-01
Available capacity: 67 62

Note: All volumes are in mmcf/d.

If you have any questions please let's discuss.