Ann: Operations Update, page-112

Looks like Sidetrack for U4 from DMP EP on 16/07/18 although status says waiting further information

OVERVIEW OF ACTIVITY
Location and operational details specific to the Activities are provided in Table 1. The Ungani 4 and Ungani 5
wells are existing. The location of the Activity areas is shown in Figure 1.
Table 1: Indicative well design characteristics.
Well Locality Surface Location (m) Permit
Kurrajong 1 70 km E Broome 489,019 E; 8,015,935 N EP 391
Rafael 1 85 km S Derby 565,920 E; 8,001,305 N EP 428
Ungani 4ST1 90 km SW Derby 517,096 E; 8,010,450 N L 20
Ungani 5 90 km SW Derby 518,495 E; 8,011,035 N L 20
Ungani West 1 90 km SW Derby 515,937 E; 8,010,322 N L 20
Yakka Munga 1 75 km SW Derby 536,537 E; 8,018,017 N EP 428

Well Drilling and Testing

The drilling rig will operate 24 hours a day, seven days a week with two crew shifts totalling approximately 30
personnel for the drilling operations.

A Company Representative will supervise the Activity.


Drilling a well generally involves the following key stages:
• drilling the well as a number of hole sections/intervals with decreasing diameter;
• installing steel well casings in drilled hole sections;
• filling the annulus outside the well casings with cement as required for well integrity; and
• conducting wireline logging of hole sections.
Further testing may be conducted to evaluate prospective zones if positive results of hydrocarbons are
determined during initial testing, or to test injectivity of the well. This will be undertaken following completion
of drilling operations and demobilisation of the drilling rig.

Pump Installation
It is expected that artificial lift will be required to be installed to ensure production rates from the
Ungani 4(ST1) and Ungani 5 wells can be sustained. Installation of downhole pumps will require workovers
of the production wells. Workover of the Ungani 4 well will be done in two stages, prior to and after the sidetrack
drilling.