Remaining reserves are estimated to be at about 800 billion cubic feet tcf and the daily production is around 660 million cubic feet 19,000,000 m 3 of natural. The field was discovered in 1963 when well zk1 tested the crest of a large, seismically defined, eastwest trending structural feature. Pertonas won the international tender put up by the ethiopian ministry of mines and energy mme to privatize the calub and hilala gas fields found in the. Cenozoic epigenetic uranium mineralisation occurs in calcretes above basement rocks in the namib desert e. Discovery and reservoirforming geological characteristics. Field geologists thus attempt to describe and explain surface features, underground structures, and their interrelationships. Part of the gas reaccumulated in laterformed zagros anticlines. In march 2016, the government of indonesia goi rejected an flng development and instructed the operator to pursue an onshore lng development.
Halbouty, 2003, giant oil and gas fields of the decade 19901999. Geology and development of thamama zone 4, zakum field onepetro. Hundreds of questions arise, dictating that hundreds of decisions must be made during the. Geologic overview and petroleum systems of the greater ghawar. Pakistans major petroleum plays search and discovery.
The field is operated by bhp and is part of the block 26671 concession. The late cretaceous pab sandstone forms the primary hydrocarbon reservoir in the kirthar foldbelt and the main reservoir in both the zamzama and nearby bhit. Geology and total petroleum systems of the westcentral. This potentially giant gas discovery is located some 350 km east of timor island and 350 km north of darwin. The region experienced downwarping of the crust during the paleozoic and. Most geologists specialize in at least two fields and must. Implications for cambrian petroleum systems and reservoirs.
The main aim of this unit is to introduce you to the basic procedures of carrying out a field geological mapping exercise and how to present the obtained field information data in a formal geologic report. The fields proven natural gas reserves are estimated at 1. Geology is in many ways the most complex of sciences, as a complete understanding of the workings of the earth requires training in mathematics, chemistry, physics, biology, and astronomy. Those engaged in field geology investigate rocks and rock materials in their natural environment. This list of natural gas fields includes major fields of the past and present n. Study of fault configuration related mysteries through. Zamzama gas field development ii fuel gas treatment package. Oct 26, 2016 10262016 figures showing many oilgas field discoveries in lower indus basin 25. Zamzama gas field lies in the vicinity of kirthar fold and thrust belt, southern indus basin of pakistan.
Deeper in the jurassic, a dry gas has been encountered. The accumulation is associated with cambrian barik sandstone member reservoirs, in a semiregional combination stratigraphicstructural trap. Introduction to field mapping of geologic structures geol 429 field geology. The carbon isotope value of ethane in the southern part of the jingbian gas field is lower than that in the northern part, indicating a carbon isotopic reversal in the southern jingbian gas field. The interpretation of petrophysical logs unveil the reservoir traits and augment an intuition of hydrocarbon gas bearing zones. The geology of tanzania began to form in the precambrian, in the archean and proterozoic eons, in some cases more than 2. Situated in the highly productive pab reservoir, at a depth of around 3,500 metres, zamzama gas is sweet and dry, with a low condensate to gas ratio of 6. The well that discovered zafarani gas field was spudded in 2012. Tilted orthorhombic velocity model building and imaging of zamzama gas field with fullazimuth land data.
Some of the items listed are basins or projects that comprise many fields e. An introduction to geophysical exploration philip kearey department of earth sciences university of bristol michael brooks ty newydd,city near cowbridge vale of glamorgan ian hill department of geology university of leicester third edition. As the term implies, field geology means field work, geology as practiced by direct observation of outcrops, exposures, landscapes, and drill cores. Abadi gas field offshore technology oil and gas news and. Pdf a radical seismic interpretation rethink resolves.
Other examples of seismic lines showing traps for oil and gas deposits. Pande gas field is extensive, measuring 20 km by 25 km, and is an undeveloped, high calorific, dry gas accumulation. It lies in the orange subbasin at a water depth of 560ft. Geologic setting 200 km nile delta eratosthenes seamount mediterranean sea sinai sub plate. The presence of high quality reef reservoir was a surprise to. The geology and hydrocarbon systems in deepwater were completely unexplored by the drillbit, and indeed only when spectrum acquired 20,000 km of new 2d data along. The journal geology publishes timely, innovative, and provocative articles relevant to its international audience, representing research from all fields of the geosciences. Thamama zone 4, currently the most important producer in zakum field, occurs approximately in the middle of the thamama group. The southern indus basin is surrounded by the indian shield to the east and the marginal zone of indian plate to the west, and it also bounded by sukkur rift from north to offshore indus in the south. The zamzama structure is a large northsouth orientated. You may need to install acrobat reader to obtain the pdf documents.
Oil and gas reservoir rocks4, 5 are porous and permeable. Here the water depth of the gulf range from 2080 ft. For the older set of geologists, it should bring warm memories of words, phrases, maps and descriptions revisited. Field geology encyclopedia of life support systems. The abadi field is indonesias first discovery in the middle jurassic plover formation. Study of fault configuration related mysteries through multi.
The chance to teach geology in the field, where the outcrops act as open laboratories, offers didactical possibilities that go far beyond classroom based teaching. With more than 50,000 copies published since the first edition was released in 1954, geology of petroleum remains one of the most widely read geology books of all time. The geological field guide series basic geological mapping, fourth edition john barnes the field description of metamorphic rocks norman fry. Khazzan is a giant tight gas accumulation located in northern oman. Zamzama gas field development i sour gas sweetening package. They contain interconnected passageways of microscopic pores or holes that occupy the areas. Geochemistry of petroleum gases and liquids from the. The gas field was discovered in the late 1952 and the commercial exploitation of the field began in 1955. Oil and gas field the potwar thrust belt has been known for oil production since 1915 when khaur field was discovered in district attock about 100 miles south of rawalpindi. Known gas field size versus field discovery year and grown gas field size versus cumulative number of new field wildcat wells for central arch horstblock anticlinal oil and gas assessment unit 42. Pdf a radical seismic interpretation rethink resolves the. Sembar gorughazij composite total petroleum system, indus and. Langer heinrich 16, and salt is produced by solar seawater evaporation e. The geologic province data set is produced from the interpretation and combination of several resources, including the bedrock geology, the distribution of oil and gas fields, structural geology, and geography.
The objective of the research was to study petrophysical parameters of the lower goru formation in sawan gas field to identify hydrocarbon bearing zones. Sawan gas field, central indus basin, lower goru formation, petrophysical parameters abstract the study area lies in central indus basin, district khairpur, sindh province, pakistan. Pakistans major petroleum plays an overview of dwindling reserves athar jamil1, abdul waheed2, and riaz a. Introduction to geological mapping lecture 1 3 field geology when rocks and rock materials are investigated in their natural environment and in their natural relations to one another, the study is called field geology.
Field geology and geologic mapping techniques geology 300401 fall semester 2007 dr. Oil and gas field centerpoints, shown on these figures, are reproduced, with. Bhp billiton to develop pakistans zamzama gas field mar 06, 2002 01. Ranikot sandstone is the main reservoir in the dhodak oil and gas field. Of significance is that the field classrooms are directly accessi. Zamzama gas field development i sour gas sweetening.
By the end of 2014, the giant shenmu gas field had been found in the ordos basin with an explored gasbearing area of 4069 km 2 and the proved geological gas reserves of 333. The oldest reservoir for oil, gas and condensate is khewra formations sandstone of early cambrian age in adhi field near gujar khan. Advanced petroleum geology west virginia university. It is a compilation, along with some interpretation, of the geology of the west siberian basin and a description of the samotlor oil field, the largest field of the ussr. The zamzama field the zamzama field is a major resource, covering an area of around 120 square kilometres, and ranking fourth in terms of pakistans discovered gas reserves. Igneous and metamorphic crystalline basement rock forms the archean tanzania craton, which is surrounded by the proterozoic ubendian belt, mozambique belt and karagweankole belt. Under full development the field adds approximately 15% to pakistans daily gas production, thus reducing the requirement for fuel oil imports. The field lies in water depths ranging 984ft3,281ft. Carey encyclopedia of life support systems eolss 2. Zamzama is one of the largest gas fields in pakistan, and is located in sindh province, southern pakistan, around 20 kilometres west of the indus river. Dec 20, 2014 oil and gas field the potwar thrust belt has been known for oil production since 1915 when khaur field was discovered in district attock about 100 miles south of rawalpindi.
The oldest reservoir for oil, gas and condensate is khewra formations sandstone of early cambrian age in adhi field near gujar khan district rawalpindi in potwar basin. Introduction to geological mapping is a third year earth science study unit offered by the department of geology, university of nairobi. The field covers approximately 860 square kilometres 330 sq mi. Zamzama gas field balancing risk and value onepetro. Inpex earlier owned a 90% interest in the field but in july 2011 transferred 30% to shell. Shah deniz gas field is the largest natural gas field in azerbaijan. Usgs photo gas seeps on the seafloor methane seep off shore virginia, noaa photo.
Sep 14, 2018 zamzama is one of the largest gas fields in pakistan, and is located in sindh province, southern pakistan, around 20 kilometres west of the indus river. Once under full development the field will add approximately 15% to pakistans daily gas production, thus reducing the requirement for fuel oil imports. Geological model and reservoir evaluation of the lower. The oil and gas field centerpoints data set is a point coverage that marks the approximate centerpoints of oil and gas fields in iran. Sciaps app shares test results to mobile phone via bluetooth automatically.
Inpex masela, a subsidiary of japanbased oil and gas company inpex, operates the field. The khazzan gas accumulation, a giant combination trap in. Petrophysical characteristics of lower goru formation. Seismic structural interpretation reveals that the zamzama field structure is a single, asymmetric, thrusted anticline with two discrete culminations in the hangingwall and a well resolved. Key to success for exploration of pab formation in kirthar foldbelt. Oil and later gas were expelled from llandoverian source rocks and migrated toward the gavbendiqatar arch where a single gas field was formed with a peripheral oil leg prior to the zagros folding. Business business, international petroleum, energy and mining oil fields. Bhp billiton to develop pakistans zamzama gas field. The discovery of zohr gas field in egypt august 2015 what do we know about the zohr field. Oil was progressively cracked into pyrobitumen and either light oil or gas. The thamama in sajaa field is a massive section of open marine shelf limestones. Regional studies of the potwar plateau area, northern pakistan. Zamzama is one of several gas fields discovered in the sindh province. Political boundaries are provided to show the general location of country andor other reference political boundaries.
Numerous sources of geologic information are used for the final interpretation and designation of these provinces by r. Field mapping can be physically and mentally challenging. Gas seep gas seep in ventura county, ca emits methane, ethane, propane. Lateral variation in magnetic susceptibility and remanence give rise to spatial variations in the magnetic field it is expressed in so called magnetic anomalies, i. Map service showing geology, oil and gas fields, and. Oil and gas fields the results of natural geological processes. Geology and total petroleum systems of the westcentral coastal province 7203, west africa by michael e. Geology of a continental shelf revealed by seismic reflection data. E2 june 4, 2004 surplus property at playa del rey and marina del rey a. Under full development the field adds approximately 15% to pakistans daily gas production, thus. Development has been centered around the upper jurassic and thamama, since the lower jurassic dry gas is sour 5%, h2s, 14% co2, 80% ch4 with a high water to gas ratio 150 bblmmscf, 844 m3mmscm.
Overview of the geography, geology, and structure of the. Cretaceous reservoirs in northwest desert anticlines. Kudu gas field is part of production licence 001, located about km off the shore of namibia near the city of oranjemund, west africa. Through comparing the geochemical characteristics of gases in the southern and northern parts of the gas field, the reasons for the carbon isotopic reversal in the. Structural geology is the study of the three dimensional distribution of large bodies of rock, their surfaces, and the composition of their inside in order to try and learn about their tectonic history, past geological environments and events that could have changed or deformed them. Jun 28, 2018 the malaysian oil and gas company petronas last month paid the ethiopian government 80 million dollars for the calub and hilala natural gas fields in the ogaden basin, southeast ethiopia. Large zamzama gas field project to proceed in southern pakistan. The field was discovered in 1963 by seismic survey and the discovery was confirmed by drilling zk1. This study was made between may and october, 1977, and the four authors spent a total of about six manmonths on its preparation.
Geology and soils southern california gas companys application to value and sell 4. Geochemistry of petroleum gases and liquids from the inhassoro, pande and temane fields onshore mozambique markus j. Overview of the geography, geology, and structure of the potwar regional. Table 2 list of oil and gas fields and wells with oil andor gas shows. Geological survey and university of alaska fairbanks. Pdf key to success for exploration of pab formation in. Pdf a radical seismic interpretation rethink resolves the structural. Structural geology american association of petroleum. Known oil field size and grown oil field size versus field discovery year for central arch horstblock anticlinal oil and gas assessment unit 41.
Location map of zamzama gas field in the southern indus basin. This energy white paper sets out the best data that now exists on how many giant oilfields there are, where they are located, their. Oil was found to occur in all six zones of the lower cretaceous thamama group. Framework assessment project study area, northern pakistan. The sui gas field accounts for 26% of pakistans gas production. The khazzan gas accumulation, a giant combination trap in the. Petrophysical logs contribute in appraising productive sands of. In this paper a giant oil field is defined as one containing 500 million barrels or more of recoverable oil. The volume is in a robust and handy size, with colour coded chapters for ease of use and quick reference in the field. Potential reservoirs in the eocene include limestone of the habib rahi and pirkoh members of the kirthar formation. Oil has been found in the inhassoro field in the g6 thin oil rim with a gas cap and g10 undersaturated oil reservoirs. Apr 19, 2014 it discovered zamzama gas field in april 1998 in the dadu exploration block along with jointventure partners eni formerly lasmo with a share of 17. Broadhead, new mexico bureau of geology and mineral resources, a division of new mexico institute of mining and technology introduction the oil and natural gas that are produced from oil and gas fields reside in porous. The most recent include the bhit gas field, which lies to the south west of zamzama, and the kadanwari, sawan and miano fields to the north east.
Geological field techniques is designed for students, amateur enthusiasts and professionals who have a background in geology and wish to collect field data on rocks and geological features. The sui gas field is the biggest natural gas field in the pakistan. Pakistans major petroleum plays an overview of dwindling. Kudu gas field, orange subbasin offshore technology oil. General principles and techniques 1 philosophy and organization of field studies i selection of a field study ii literature search and detailed reconnaissance. Results can be emailed as pdf files direct from phone. Users can view current or previous test results, page them exactly like a camera roll. The total proven reserves of the zafarani gas field are around 5 trillion cubic feet 143. List of natural gas fields wikimili, the free encyclopedia.
Study of fault configuration related mysteries through multi seismic. Large zamzama gas field project to proceed in southern. It is situated in the south caspian sea, off the coast of azerbaijan, approximately 70 kilometres 43 mi southeast of baku, at a depth of 600 metres 2,000 ft. The masela psc contains the giant abadi gas field, located in the timor sea. In april 2015, the partners submitted a revised pod for a 7. Oil and gas field centerpoints, shown in these figures, are reproduced.