Structural Interpretation and Hydrocarbon Potential of Balkassar Oil Field, Eastern Potwar, Pakistan, using Seismic 2D Data and Petrophysical Analysis

Abstract

The Balkassar oil field is situated in the eastern Potwar sub-basin, lies on the southern flank of Soan syncline in Himalayan collisional regime. The area represents Indo-Pak and Eurasian blocks of Precambrian to recent time. Thrusting and folding of Himalayan, Indo-Pak plate movement and Salt Range uplift form the structural trap in Balkassar sub-surface (Balkassar anticline). On the basis of information from eleven seismic 2D lines and wells data six reflectors well data, four faults were identified and marked. The structural trend is northeast southwest. Interpretation of seismic 2D data reveals that the study area has undergone intense deformation as a consequence of development of thrusts and backthrusts. The Balkassar anticline is bounded by two thrust faults one from southeast and the other from northwest. Time and depth contour models shows that anticline limbs at north-western side are steep as compared to south-eastern limbs. Seismic interpretation indicates the presence of well-developed anticline bounded by three faults in the cover sequence and one fault in basement and thus the structure may act as a trap for hydrocarbons. The petrophysical analysis of Balkassar-OXY-1 well shows about 83.1% hydrocarbons saturation in the reservoir rocks, hence this study suggest that Balkassar Oilfield has potential to produce hydrocarbons.

Petrophysical Evaluation and Hydrocarbon Potentialities of the Abu Roash C Member of the Abu Roash Formation, Badr El Din-3 and Badr El Din-15 Oil Fields, Abu Gharadig Basin, Northern Western Desert, Egypt

“…A total of 11m of net pay sand was tested over the BED-3 field, with an average porosity of 20.8% and hydrocarbon saturation of 87.4 %, and it tested 2337 b/d oils of 42.2 OAPI and 2.215 MMscf/d gas through BED 3-8. As a result, the BED 3-8 region offers optimal reservoir potentiality according to the parameters established by Amigun and Odoli (2013), Rider, (1986) and Shah et al, (2017). While the Abu Roash "C" Member is not prospective through BED3-C9-1 and BED3-C9-2.…”

Improving Hydrocarbon Prospect Evaluation at Badr El Din-3 and Badr El Din-15 Oil Fields by Integrating 3D Structural Modeling and Petrophysical Analysis for Abu-Gharadig Basin, North of Western Desert, Egypt

“…In the BED-3 field, a total of 11 m of net pay sand was calculated to have an average porosity of 20.8% and hydrocarbon saturation of 87.4%, and production was tested at 2337 barrels per day (b/d) of oils of 42.2 OAPI and 2.215 million standard cubic feet per day (MMscf/d) of gas in well BED 3-8. Thus, the BED 3-8 well area has optimum reservoir potential as per the criteria set by [34] and [35] after [36]. The Abu-Roash C Member in the area of wells BED 3-C9-1 and BED 3-C9-2 is not prospective.…”

Source Rock Potential of Chichali and Samana Suk Formations Deposits in Panjpir Oilfield Subsurface, Punjab Platform, Pakistan

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In this region various potential source rocks have been identified and gas was produced from those recognised source rock with kerogen Type II and III (Shah and Abdullah, 2017;Wandrey et al, 2004).In the region three gas fields have been explored in the infra Cambrian sediments in the region having TOC up to 30% and ranging from 0.80-4% wt. %, (

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“…In this region various potential source rocks have been identified and gas was produced from those recognised source rock with kerogen Type II and III (Shah and Abdullah, 2017;Wandrey et al, 2004).…”

“…Geological background. The Indian plate started to rift in Late Proterozoic from supercontinent Gondwanaland (Shah and Abdullah, 2017;Kemal et al, 1991;Raza et al, 2008), which resulted in sediment deposition of Infra-Cambrian over Pre-Cambrian. Due to the effect of dragging of Infra-Cambrian strata the second phase of rifting in Punjab platform is not evidently observable however, the evidence of rifting can be seen on reflectors of seismic profile, where cretaceous strata have been displaced along normal faults system, along with rifting the Indian plate collision and its subduction underneath the Eurasian plate which is still continuing, have developed variable structural patterns in Punjab platform (Kemal et al, 1991).…”