Potential petroleum sources and exploration directions around the Manjar Sag in the Tarim Basin

Jin, Zhijun; Liu, Quanyou; Yun, Jinbiao; Tenger,

doi:10.1007/s11430-015-5573-7

Cited by 34 publications

(17 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are two main sets of source rocks in the Tarim Basin, the Lower Cambrian (Є 1 y) and Middle-Upper Ordovician (O 2+3 ) (Li et al, 2010;Chang et al, 2015;Li et al, 2015b). Previous studies (Moldowan et al, 1985;Peters et al, 1990;Wang et al, 2004bWang et al, , 2008Yang et al, 2016Yang et al, , 2017Jin et al, 2017) show that the Middle-Upper Ordovician source rock is characterized by a relatively high abundance of DBTs. Its trifluorene composition shows a relatively high abundance of C 23 TT with the ratio of C 21 TT/C 23 TT < 1, and a relatively low abundance of C 28 regular steranes with the ratio of C 28 /(C 27 + C 28 + C 29 ) < 25%.…”

Section: Source Of the Tuoputai Oilmentioning

confidence: 93%

Geochemical Characteristics and Migration Pathways of Ordovician Carbonate Oil Reservoirs in the Tuoputai Area, Tarim Basin, Northwestern China

Liu

Shen

Cheng

et al. 2021

Acta Geologica Sinica (Eng)

View full text Add to dashboard Cite

Exploration potential is huge and the oil resources are rich in the Ordovician reservoirs of the Tarim Basin. However, the mechanism of hydrocarbon accumulation is complex and not yet fully understood. In the Tuoputai area, the hydrocarbon migration pathways and characteristics of deep hydrocarbon accumulation are revealed through analyses of the physical data of rich oil and gas, the geochemical parameters of oil, and fluid inclusions. The results show that the Ordovician oils in the Tuoputai area have the same geochemical characteristics as the mixed oil from the Lower Cambrian source rock and the Middle–Upper Ordovician source rock. The Ordovician reservoirs have been charged three times: in the late Caledonian, late Hercynian, and Himalayan stages. Oil charging occurred in the Hercynian stage, in particular, as it is the main filling period of hydrocarbon. The north‐northeast (NNE)‐trending TP12CX major fault, active in in these times and is dominant migration channel of hydrocarbon, but there is segmentation affected by the difference of activities. Oil maturity is higher in the south than in the north and is abnormally high near the major fault. Parameters related to migration indicate that oil migrated northeastward along the NNE‐trending TP12CX major fault and adjusted laterally along the secondary faults and weathering crust, forming the present characteristics of oil and gas distribution.

show abstract

Section: Source Of the Tuoputai Oilmentioning

confidence: 93%

Geochemical Characteristics and Migration Pathways of Ordovician Carbonate Oil Reservoirs in the Tuoputai Area, Tarim Basin, Northwestern China

Liu

Shen

Cheng

et al. 2021

Acta Geologica Sinica (Eng)

View full text Add to dashboard Cite

show abstract

“…1a) (Ma et al, 2006;Zhu et al, 2018); and in the subsurface at wells KN 1, YL 1 and TD 2 in the NE and east of the basin, and at Fang 1, He 4 and He 3 to the west (locations in Fig. 1a) (Huang et al, 2016;Jin et al, 2017;Li et al, 2012;Ma et al, 2006). Lower Ordovician source rocks have mostly been reported from the eastern Manjia'er Depression and the Tadong area, and comprise carbonaceous, siliceous mudstones and graptolite-rich and radiolarian shales (Huang et al, 2016).…”

Section: Geological Settingmentioning

confidence: 99%

“…Lower Ordovician source rocks have mostly been reported from the eastern Manjia'er Depression and the Tadong area, and comprise carbonaceous, siliceous mudstones and graptolite-rich and radiolarian shales (Huang et al, 2016). They occur in the Heituao Formation which has been drilled in wells TD 1, TD 2 and YL 1 in the east of the basin (Jin et al, 2017;Ma et al, 2006) but may also be present in the centre and west (Zhang et al, 2000).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Tazhong and Tabei Uplift were bathymetric highs on which limestones were deposited during this period. Marls deposited along the margins of both uplifts have been found to have high organic carbon contents with TOC values in the range of 0.43 -2.23% (Zhang et al, 2000), and are believed to have source rock potential (Hanson et al, 2000;Jin et al, 2017;Zhang et al, 2000). They mainly occur in the Lianglitage Formation which has been drilled in wells including TZ 10, TZ 12, TZ 30, LN 46 and Zhong 1 (Ma et al, 2006;Jin et al, 2017).…”

Section: Geological Settingmentioning

confidence: 99%

See 1 more Smart Citation

Geochemical Composition of Ordovician Oils From the Tuoputai Region, Northern Tarim Basin, Nw China: Source Rock Correlation

Cheng

Liu

Xian

et al. 2021

Journal of Petroleum Geology

View full text Add to dashboard Cite

Molecular and stable carbon isotope compositions of 46 Ordovician crude oil samples from wells in the Tuoputai region of the northern Tarim Basin were investigated using GC–MS, MRM GC–MS and IRMS to determine their genetic relationships and to identify possible source rocks. Thirty‐three source rock samples from outcrops and cores were also investigated. The oil samples varied from light to heavy crudes and showed very narrow δ13C value ranges for the whole oil, saturated and aromatic fractions. The majority of the oils displayed very similar molecular compositions with relatively high concentrations of n‐alkanes and isoprenoids and low concentrations of terpenoids and steroids. Comparison of the compositions of these crude oils strongly suggested their genetic affinity, while maturity parameters indicated maturity variations from the peak to the late oil generation stages. The samples also showed the characteristics of mixtures of biodegraded and fresh oil charges.Bitumen extracts from Cambrian and Ordovician source rocks were studied in detail. The oil compositions suggested a marine marl source deposited in anoxic, hypersaline conditions with significant bacterial and algal organic matter inputs. The distributions of C26–C28 triaromatic steroids, tricyclic terpanes and regular steranes appear to have been greatly influenced by thermal maturation, making them unreliable for correlating the oils and the source rocks. In contrast, dinosteranes and triaromatic dinosteroids seem not to have been affected by maturation and were more useful for correlation studies. They indicated that there was no or little genetic relationship between the Cambrian – Lower Ordovician source rocks and the oils, but in general suggested a possible Middle – Upper Ordovician source for the oil accumulations in the Tuoputai field. However, the occurrence of triaromatic dinosteroids in oil from well TP28XCX may also suggest a minor contribution from Cambrian – Lower Ordovician source rocks.

show abstract

“…Massive efforts have been devoted to karst research of Ordovician carbonate rocks in Tahe oilfield for a long time, the achievements are rich, including: (a) the research of Tarim Basin and a wider range, such as stratigraphy (Wang 1999), sedimentology (Sun 2001), structural geology and geotectonic (Lee 1955), oil and gas exploration area (Dai et al;Jin et al 2017;Jia et al 2013), structural system oil-control model (Yuzhu 2018), structure and hydrocarbon distribution (Sun et al 2002) and reservoir characteristics (Sun et al 2020); (b) the academic contributions of Akekule uplift, such as structural characteristics (Li 2006), fault characteristics (Ji et al 2008), paleo-tectonic restoration (He et al 2011), reservoir tectonic stress field (Ding et al 2009;Liu et al 2020), tectonic evolution (Ren et al 2008;Feng 2012;Wu 2013), the influence of tectonic movement on carbonate rocks (Yu and Fu 2006), etc. In addition, there are related studies on some areas or structural belts in Tarim Basin (Sun et al 2019a;Luo et al 2012;Wu et al 2012); (c) the field investigation of karst phenomena in outcrop area of northern Tarim basin, involving of characteristics of paleo-karst (Liu et al 2013a;Gao et al 2014), karst cave system (Shi et al 2014), controlling factors of paleo-karst cave (Li et al 2013), characteristics of karst collapse body (Liu and Cai 2010), karst zonation (Feng et al 2010), development model of paleo-karst (Zhang et al 2013), outcrop characterization of paleo-karst reservoir , vertical fracture-controlled development model (Liu et al 2011), etc.…”

Section: Progressmentioning

confidence: 99%

Research progress and prospect of Ordovician carbonate rocks in Tahe oilfield: karst feature

Chen

Yinguo

et al. 2021

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

Inspired by structural geology, karstology, geomorphology, as well as petroleum geology, coupling excellent documented research works and the field investigation, the status and prospect for the studies on karst feature of Tahe oilfield are discussed comprehensively. Results indicate: (a) the majority of research works have appeared since 2000 and can be classified as three categories and 12 subclasses, in which caves, fracture cave systems and fault-karst reservoirs are considered as the main research topics, (b) existed studies can be divided into four stages, and fault-karst reservoir analysis is a hot spot recently, focusing on the scale of the formed reservoir. It is the common sense that faults control both fractures and caves. Originally, there exist close relationships among karst phenomena whether they're on the ground or underground. Revealing these relationships mentioned above is the important direction for the studies of Tahe oilfield in the future. As for the areas where faults are widely distributed in karst, there exist hierarchical properties in karstology: (1) fault controls topography and landform, (2) fault, topography and landform control the water system and (3) fault, topography, landform and water system control karst. These hierarchical properties are the basic connotation of the laws for karst evolution, and the vital goals of the karst study of Tahe oilfield as well. Applications of methods and techniques and field-karst investigation are the solid guarantees to achieve these goals.

show abstract

Potential petroleum sources and exploration directions around the Manjar Sag in the Tarim Basin

Cited by 34 publications

References 16 publications

Geochemical Characteristics and Migration Pathways of Ordovician Carbonate Oil Reservoirs in the Tuoputai Area, Tarim Basin, Northwestern China

Geochemical Characteristics and Migration Pathways of Ordovician Carbonate Oil Reservoirs in the Tuoputai Area, Tarim Basin, Northwestern China

Geochemical Composition of Ordovician Oils From the Tuoputai Region, Northern Tarim Basin, Nw China: Source Rock Correlation

Research progress and prospect of Ordovician carbonate rocks in Tahe oilfield: karst feature

Contact Info

Product

Resources

About