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Block 47 - Onshore Oman

SUMMARY

Block 47 is located in the interior of Oman and covers 8,524 km2. Unlike most blocks this one contains

substantial outcrop belts of the major reservoirs, seals and source intervals expected within it.

Likewise, some of the structural and stratigraphic trapping possibilities are present in laterally

extensive outcrop belts.

The northern portion of the block contains Jabal Akhdar and Jabal Shams. Extensive erosion of these

mountains has resulted in a breach of the Jabal Akhdar anticline and the creation of a series of

extremely deep wadis cutting through the stratigraphic section. Because of this it is possible to view

in detail the three dimensional aspects of what are the subsurface reservoirs in the portions of the

block were gas and gas/condensate have been discovered.

Tight gas is the predominant play within Block 47. To date gas has been discovered in the Natih and

Shuaiba formations while gas/condensate has been discovered in the Amin Formation. These

discoveries have not been fully appraised. There are currently four gas and gas/condensate prospects

mapped across the block.

Within the tight gas play is an unconventional sub-play for the Natih E. This unit is a source interval

and also a reservoir. Development of unconventional gas is only beginning in the Sultanate and the

Natih E has been recognized as a prime target.

Infrastructure within this block is exceptional. The towns of Nizwa, Bahla and Al Hamra are within the

block. These are major towns within the interior so modern roads occur throughout the non-

mountainous areas. Within the mountainous regions roads exist that connect the villages to the

modern road infrastructure. Other infrastructure elements such as power and water exist across the

block.

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BLOCK OWNERSHIP HISTORY

The current configuration of Block 47 has evolved since the area was first designated for offering to

outside companies. The original area was once part of Petroleum Development Oman's (PDO) nation-

wide concession. A significant portion of that concession area was relinquished, as specified in the

original agreement, during the 1970s.

As of today the owners of the block in its current configuration have been the following companies.

PDO

Amoco

Indago Oman

Novus Oman

RAK Petroleum

DNO

AVAILABLE DATA

Block seismic base map, satellite image map and infrastructure map

4,175 km 2D seismic data

Gravity data

6 Wells

Seismic and well location base map

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STRATIGRAPHY

Oman chronostratigraphic chart (GTS 2012 dates incorporated)

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The stratigraphic section occurring in this block can be placed into three groups. The oldest of these

ranges from Precambrian to Early Silurian in age and contains the Haima and Huqf Supergroups. The

Amin Formation is part of the Haima Supergroup and so far is the deepest formation penetrated within

the block.

Separated by a regional unconformity that removed well over 100 million years of geologic time is the

predominant pay section. This begins with the Permian age Haushi Group and generally ends with the

Fiqa Formation of the late Cretaceous age Aruma Group. Within this portion of the stratigraphic

section can be found the Natih, Shuaiba and Lekhwair formations, all of which are regionally significant

reservoirs.

Stratigraphy of the Khamah and Wasia Groups in Oman

Finally, overlying the previous portion of the geologic section is the Triassic through Tertiary age

allochthonous section associated with the Hawasina Thrust Complex. This interval is composed of

time-equivalent rocks from over 200 kilometers away. These were thrust over the block as a result of

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Tertiary obduction. This portion of the section covers the block but is thinner in the southern-most

area.

OUTCROP AND ANALOGS

The non-Amin prospective and source intervals as well as some regional seals are found in outcrop

across the northern portion of the block. These are exceptional outcrops and several of the formations

found in the subsurface were first described at these outcrops. This outcrop locations include Jabal

Akhdar and Jabal Shams. The wadis within the block have eroded deeply, exposing the formations in

multiple, predominantly dip-oriented transects. The following formations are present in multiple

outcrops and can also be viewed regionally along the modern road to Jabal Akhdar.

Hamrat Duru Group: Allochthonous sediments of the Hawasina Basin

Natih Formation: Reservoir and source

Nahr Umr Formation: Regional seal

Shuaiba Formation: Reservoir

Kharaib Formation: Potential reservoir

Lekhwair Formation: Potential reservoir

The Amin Formation is not found in outcrop within the block. The nearest outcrops are rather far away

to the southeast, in the Huqf High. There are some professional papers that have been published. The

Target interpretation package also contains material on this formation.

DISCOVERIES

Gas: Natih and Shuaiba formations

Gas/Condensate: Amin Formation

PROSPECTS

Ten mapped prospects that target the Natih, Lekhwair or Amin formations. These are gas and

gas/condensate prospects. They are distributed across the block.

PLAY SUMMARY

The play for this block is Tight Gas. An active hydrocarbon system has been established for this and

adjacent blocks. There are two hydrocarbon sources to which most of the stratigraphic succession

found within the block have been exposed.

TRAP

Predominantly 2-way dip-closed, fault-bounded anticlines. Stratigraphic traps associated with

progradational clinoforms and carbonate platforms exist in adjacent blocks and are expected within

this block. Although not actively pursued to date imbricate thrusting and fault bend folding within the

Hamrat Duru Group sediments would create traps.

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SW to NE seismic line across an anticline. This structure was tested by the Hawamel-1. Pressure

data indicate gas across several zones.

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Top Natih Formation TWT interpretation

RESERVOIR

All potential reservoirs that have been encountered in the block are tight. The carbonate reservoirs

are fractured, which is common in the blocks adjacent to this block. These can be considered

unconventional reservoirs. These are listed below by Group.

Wasia Group

Natih Formation (gas already discovered)

Natih E is an unconventional hydrocarbon target (self-sourced)

Kahmah Group

Shuaiba Formation (gas already discovered)

Kharaib Formation

Lekhwair Formation (strong gas shows)

Mahatta Humaid Group

Amin Formation (gas/condensate already discovered)

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SEAL

Wasia Group

Natih Formation's more shale-prone members

Nahr Umr

Kahmah Group

Low permeability carbonate mudstones and shales associated with the basal portions of its

formations

Akhdar Group

Khuff Formation

Mahatta Humaid Group

Miqrat Formation

SOURCE

Cambrian sourced from Huqf Supergroup

Natih E

MOVING FORWARD

Proceeding further takes you out of the public area. Doing so gives you access to the raw data as well

as the ability to order interpretation-ready and evaluation packages. There are 4 steps for moving

forward.

Step 1: MEERA Subscription for the bid round

MEERA is the software platform being used by the MOG. It allows users to view data live and

interactively from anywhere in the world. For more information on this platform please view

the LDR video.

The subscription permits general access and allows viewing of the data packages.

The system is the official point of contact with the MOG and will be used for

Interaction with the MOG, including clarification requests.

Bid submissions

Award notifications

Step 2: MOG raw data viewing and purchase

These data can be viewed live from anywhere in the world via the MEERA platform.

Acquiring the raw data is simple. These data can be downloaded directly or can be provided

on digital media for a selected destination.

There is a large amount of raw data for this block. These data include seismic lines, well

documents and gravity data. Following is a brief summary listing for seismic and well data.

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Seismic data: Results from 14 2D surveys in segy format and 46 2D post-stack scanned sections

in pdf format.

BP_85JAW1: 9 lines in segy format

CEL93REG1: 1 line in segy format

IND07BHL1: 6 lines in segy format

IND07IBI1: 13 lines in segy format

IND07IBI2: 70 lines in segy format

IND07JAW1: 43 lines in segy format

JPX82REG1: 3 lines in segy format

MOL08REG1: 20 lines in segy format

NOL03BHL1: 45 lines in segy format

NOL04BHL1: 24 lines in segy format

PDO82REG1: 2 lines in segy format

PDO84REG3: 11 lines in segy format

PDO98JSK1: 4 lines in segy format

RAK11BHL1: 16 lines in segy format

Those surveys possessing a high number of lines may contain a smaller number of total lines

which have been processed in several ways.

Well Data: Not all wells contain the same types of data. Most have log data and many have a

series of well documents. Some wells also have core data.

CH-2 (West Miadin)

CH-12 (Al Aridh)

Hawamel-1

Mamurah-1

Zad-1

Zad-2

Step 3: Target Oilfield Services’ interpretation-ready package viewing and purchase

Target Oilfield Services has prepared interpretation-ready Petrel and Techlog projects. The

Petrel project contains all seismic data and MOG raw well data. The Techlog project contains

the MOG raw log data.

Both projects will save time since the data management has already been completed.

Interpretation can proceed immediately instead of having to wait until the various data have

been loaded onto an interpretation platform.

Step 4: Target Oilfield Services’ evaluation package viewing and purchase

In order to aid in block evaluation Target Oilfield Services has created an interpretation

package. The information it contains is based both upon the MOG's raw data for the block as

well as Target's extensive knowledge of Oman and the region. This provides a significant

advantage to anyone trying to assess this block.

The interpretation package for Block 47 contains the following.

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A geological analysis report for the block. This report goes into greater detail regarding

plays across the block and the block's petroleum system. It also provides a

sedimentologic study.

Well log data

o Edited, spliced and QC log files for wells

o Interpreted logs for wells

Fault interpretations of the 2D seismic data for the following horizons.

o Natih Formation

o Habshan Formation

o Dhruma Formation

o Amin Formation

Multi-horizon TWT and depth interpretations of the 2D seismic data.

o Natih

o Habshan

o Dhruma

o Amin

Data are in digital format and can be provided as:

o Downloadable data in standard digital formats.

o A complete Petrel project containing the wells, well logs, seismic data and

interpretations.

o A complete Kingdom project containing the wells, well logs, seismic data and

interpretations.

o A complete Techlog project containing the well log data.

MINISTRY INFORMATION

When available the standard MOG data to be provided include:

All 2D and 3D seismic data within the block boundaries

Gravity data associated with the block

Well files for all wells in the block (note: these may not exist for all wells)

Cultural data: Infrastructure, etc.

Surface topography maps

Contact:

Suleiman Saif Al Ghuniami

Director of Petroleum Concessions

Ministry of Oil and Gas

Tel +968 24640526

Fax +968 24602541

E-mail: s.alghunaimi@mog.gov.om

TARGET OILFIELD SERVICES INFORMATION

Contact:

ldrsupport@targetofs.com