a question for the oil techies on cvi

Can anybody interpret this release for me? I have no idea what a wiper trip is, or what level of gas they are talking about when they say 300-400 units. Madura is very prospective for gas wells, and has a few producing oil wells, but the oil is the thing that is important here. Anything in this release to indicate oil?

CITYVIEW CORPORATION LIMITED 2002-12-31 ASX-SIGNAL-G

HOMEX - Perth

+++++++++++++++++++++++++
CityView Corporation Limited ("CityView") (ASX:CVI) has received the
following information from its Joint Venture partner and Operating
Shareholder, Pt Medco Energi Internasional TBK ("Medco"):

OPERATOR: MEDCO MADURA - PERTAMTNA JOB
WELL: TAMBUKU #1
RIG: PT APEXINDO 1500HP RIG 2
SPUD: 21 OCTOBER 2002 (Midnight)
TARGET DEPTH: PROGRAMMED FOR 10,416 feet
PRESENT DEPTH: 6,890ft

FORMATION OBJECTIVE:
Tuban (Sandstone)
Prupuh (Limestone - Sandstone)
Kujung (Limestone - Sandstone)
Poleng (Limestone - Sandstone)
Ngimbang (Limestone - Sandstone)
TD (Limestone - Sandstone)

ACTIVITY:

* The wellhas been drilled to 6,890 feet,
* Background gas ranges from 300 to 400 units.
* Cuttings indicate shale, limestone and sandstone.
* A wiper trip has been run and the Operator has decided to run logs
in order to determine the formation being drilled in comparison with
the seismic date.