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Title: The nature and origins of decametre-scale porosity in Ordovician carbonate rocks, Halahatang oilfield, Tarim Basin, China

Journal Article · · Journal of the Geological Society
DOI:https://doi.org/10.1144/jgs2019-156· OSTI ID:1800075

At >7 km depths in the Tarim Basin, hydrocarbon reservoirs in Ordovician rocks of the Yijianfang Formation contain large cavities (c. 10 m or more), vugs, fractures and porous fault rocks. Although some Yijianfang Formation outcrops contain shallow (formed near surface) palaeokarst features, cores from the Halahatang oilfield lack penetrative palaeokarst evidence. Outcrop palaeokarst cavities and opening-mode fractures are mostly mineral filled but some show evidence of secondary dissolution and fault rocks are locally highly (c. 30%) porous. Cores contain textural evidence of repeated formation of dissolution cavities and subsequent filling by cement. Calcite isotopic analyses indicate depths between c. 220 and 2000 m. Correlation of core and image logs shows abundant cement-filled vugs associated with decametre-scale fractured zones with open cavities that host hydrocarbons. A Sm–Nd isochron age of 400 ± 37 Ma for fracture-filling fluorite indicates that cavities in core formed and were partially cemented prior to the Carboniferous, predating Permian oil emplacement. Repeated creation and filling of vugs, timing constraints and the association of vugs with large cavities suggest dissolution related to fractures and faults. In the current high-strain-rate regime, corroborated by velocity gradient tensor analysis of global positioning system (GPS) data, rapid horizontal extension could promote connection of porous and/or solution-enlarged fault rock, fractures and cavities. Supplementary material: Stable isotopic analyses and the velocity gradient tensor and principal direction and magnitude calculation are available at https://doi.org/10.6084/m9.figshare.c.4946046 Thematic collection: This article is part of the The Geology of Fractured Reservoirs collection available at: https://www.lyellcollection.org/cc/the-geology-of-fractured-reservoirs

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
FG02-03ER15430
OSTI ID:
1800075
Journal Information:
Journal of the Geological Society, Vol. 177, Issue 5; ISSN 0016-7649
Publisher:
The Geological Society of London
Country of Publication:
United States
Language:
English

References (82)

Fracture, Dissolution, and Cementation Events in Ordovician Carbonate Reservoirs, Tarim Basin, NW China journal April 2020
C5–C13 light hydrocarbons of crude oils from northern Halahatang oilfield (Tarim Basin, NW China) characterized by comprehensive two-dimensional gas chromatography journal August 2017
Genesis and distribution of hydrogen sulfide in deep heavy oil of the Halahatang area in the Tarim Basin, China journal February 2017
Porosity Destruction in Carbonate Platforms journal January 2006
The Tarim Basin, nw China: Formation and Aspects of Petroleum Geology journal January 1992
Sequence architecture and depositional evolution of the Ordovician carbonate platform margins in the Tarim Basin and its response to tectonism and sea-level change journal December 2011
The Geological Characteristics of Reservoirs and Major Controlling Factors of Hydrocarbon Accumulation in the Ordovician of Tazhong Area, Tarim Basin journal June 2014
Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China journal June 2019
Petroleum evolution within the Tarim Basin, northwestern China: Insights from organic geochemistry, fluid inclusions, and rhenium–osmium geochronology of the Halahatang oil field journal February 2020
Influence of Ordovician carbonate reservoir beds in Tarim Basin by faulting journal October 2008
Formation mechanisms of secondary hydrocarbon pools in the Triassic reservoirs in the northern Tarim Basin journal September 2013
GPS velocity field for the Tien Shan and surrounding regions: GPS VELOCITY FIELD FOR THE TIEN SHAN journal December 2010
Advances in carbonate exploration and reservoir analysis journal January 2012
U–Pb zircon geochronology of basal granite by LA-ICP-MS in Yitong Basin, Northeast China: Implications for origin of limestone journal December 2015
Carbonate karst reservoirs of the Tarim Basin, northwest China: Types, features, origins, and implications for hydrocarbon exploration journal August 2014
Hydrothermal dissolution of Ordovician carbonates rocks and its dissolution mechanism in Tarim Basin, China journal July 2016
Tectonic evolution and paleokarstification of carbonate rocks in the Paleozoic Tarim Basin journal July 2016
Ordovician intra-platform shoal reservoirs in the Tarim Basin, NW China: Characteristics and depositional controls journal March 2013
Fracture and Vuggy Porosity conference April 2013
Multiphase Calcite Cementation and Fluids Evolution of a Deeply Buried Carbonate Reservoir in the Upper Ordovician Lianglitag Formation, Tahe Oilfield, Tarim Basin, NW China journal January 2017
Thrusting and exhumation around the margins of the western Tarim basin during the India-Asia collision journal March 1997
The Tarim picrite–basalt–rhyolite suite, a Permian flood basalt from northwest China with contrasting rhyolites produced by fractional crystallization and anatexis journal January 2010
Origin and architecture of fractured-cavernous carbonate reservoirs and their influences on seismic amplitudes journal February 2012
Sedimentary facies and sequence stratigraphy of the Silurian at Tabei uplift, Tarim Basin, China journal June 2016
C 8 Light Hydrocarbon Parameters to Indicate Source Facies and Thermal Maturity Characterized by Comprehensive Two-Dimensional Gas Chromatography journal August 2017
Permian bimodal dyke of Tarim Basin, NW China: Geochemical characteristics and tectonic implications journal August 2007
Charging of Ordovician Reservoirs in the Halahatang Depression (Tarim Basin, nw China) Determined by oil Geochemistry journal September 2013
Oil filling history of the Ordovician oil reservoir in the major part of the Tahe Oilfield, Tarim Basin, NW China journal November 2008
Multi-layered ordovician paleokarst reservoir detection and spatial delineation: A case study in the Tahe Oilfield, Tarim Basin, Western China journal January 2016
Non-cracked oil in ultra-deep high-temperature reservoirs in the Tarim basin, China journal January 2018
Building the Northern Tien Shan: Integrated Thermal, Structural, and Topographic Constraints journal March 2003
The occurrence of ultra-deep heavy oils in the Tabei Uplift of the Tarim Basin, NW China journal November 2012
Application of sulfur and carbon isotopes to oil–source rock correlation: A case study from the Tazhong area, Tarim Basin, China journal June 2015
Syn- and postkinematic cement textures in fractured carbonate rocks: Insights from advanced cathodoluminescence imaging journal October 2016
Effects of structural segmentation and faulting on carbonate reservoir properties: A case study from the Central Uplift of the Tarim Basin, China journal March 2016
Wear and gouge formation in brittle faulting journal January 1987
Fault systems and their mechanisms of the formation and distribution of the Tarim Basin, NW China journal January 2014
Thickness-displacement relationships for deformation zones journal January 1988
The Early Permian Tarim Large Igneous Province: Main characteristics and a plume incubation model journal September 2014
Formation and preservation of a giant petroleum accumulation in superdeep carbonate reservoirs in the southern Halahatang oil field area, Tarim Basin, China journal July 2019
Paleokarst of the Lianglitage Formation related to tectonic unconformity at the top of the Ordovician in the eastern Tazhong Uplift, Tarim Basin, NW China journal February 2017
Early Mesozoic basin development in North China: Indications of cratonic deformation journal January 2013
Faulting of rocks in three-dimensional strain fields I. Failure of rocks in polyaxial, servo-control experiments journal May 1983
Structure and Filling Characteristics of Paleokarst Reservoirs in the Northern Tarim Basin, Revealed by Outcrop, Core and Borehole Images journal June 2017
Formation and distribution of “continuous” gas reservoirs nd their giant gas province: A case from the Upper riassic Xujiahe Formation giant gas province, Sichuan Basin journal June 2009
Kinematic analysis of fault-slip data journal January 1990
Fracture sealing and fluid overpressures in limestones of the Jabal Akhdar dome, Oman mountains journal May 2006
Insights into rates of fracture growth and sealing from a model for quartz cementation in fractured sandstones journal October 2014
Characterization and discrimination of paleokarst breccias and pseudobreccias in carbonate rocks: Insight from Ordovician strata in the northern Tarim Basin, China journal March 2019
The World Stress Map database release 2016: Crustal stress pattern across scales journal October 2018
Fault growth mechanisms and scaling properties in foreland basin system: The case study of Monte Alpi, Southern Apennines, Italy journal November 2018
Three-dimensional seismic geomorphology and analysis of the Ordovician paleokarst drainage system in the central Tabei Uplift, northern Tarim Basin, western China journal December 2011
TSR-altered oil with high-abundance thiaadamantanes of a deep-buried Cambrian gas condensate reservoir in Tarim Basin journal January 2016
New insights into the carbonate karstic fault system and reservoir formation in the Southern Tahe area of the Tarim Basin journal September 2017
Characteristics of Ordovician paleokarst inclusions and their implications for paleoenvironmental and geological history in Halahatang area of northern Tarim Basin journal October 2016
A well-preserved 250 million-year-old oil accumulation in the Tarim Basin, western China: Implications for hydrocarbon exploration in old and deep basins journal May 2013
Geochemical characteristics and accumulation of marine oil and gas around Halahatang depression, Tarim Basin, China journal May 2008
Geological origins of seismic bright spot reflections in the Ordovician strata in the Halahatang area of the Tarim Basin, western China journal December 2018
Stress state measured at ~7 km depth in the Tarim Basin, NW China journal July 2017
Continuous-flow isotope ratio mass spectrometric analysis of carbonate minerals: Letter to the Editor journal March 2003
Unconfined versus confined speleogenetic settings: variations of solution porosity journal January 2006
Paleo-heat flow evolution of the Tabei Uplift in Tarim Basin, northwest China journal January 2010
Effects of groundwater flow on mineral diagenesis, with emphasis on carbonate aquifers journal February 1999
Fracture attributes in reservoir-scale carbonate fault damage zones and implications for damage zone width and growth in the deep subsurface journal January 2019
Main progress and problems in research on Ordovician hydrocarbon accumulation in the Tarim Basin journal June 2010
Characterizing seismic bright spots in deeply buried, Ordovician Paleokarst strata, Central Tabei uplift, Tarim Basin, Western China journal July 2011
The Mechanics of Earthquakes and Faulting book December 2018
Karst porosity estimations from archive cave surveys - Studies in the Buda Thermal Karst System (Hungary) journal May 2015
Reservoir characteristics and genesis of high-porosity and high-permeability reservoirs in Tarim Basin journal December 2002
Re-evaluating the geochronology of the Permian Tarim magmatic province: implications for temporal evolution of magmatism journal September 2015
The connectivity of reservoir sand bodies in the Liaoxi sag, Bohai Bay basin: Insights from three-dimensional stratigraphic forward modeling journal November 2016
Meso-Cenozoic extensional structures in the Northern Tarim Basin, NW China journal December 2012
Carbonate porosity creation by mesogenetic dissolution: Reality or illusion? journal February 2012
Origin of palaeo-waters in the Ordovician carbonates in Tahe oilfield, Tarim Basin: constraints from fluid inclusions and Sr, C and O isotopes: Origin of palaeo-waters in the Ordovician carbonates in Tahe oilfield, Tarim Basin journal October 2010
Late Cenozoic tectonic evolution of the southern Chinese Tian Shan journal February 1998
Distributions of cumulative displacement and seismic slip on a single normal fault surface journal January 1987
Nang Nuan oil field, B6/27, Gulf of Thailand: karst reservoirs of meteoric or deep-burial origin? journal March 2000
Stress concentrations around voids in three dimensions: The roots of failure journal September 2017
Origin and significance of redistributional secondary porosity journal November 1990
δ 13 C and δ 18 O isotopic composition of CaCO 3 measured by continuous flow isotope ratio mass spectrometry: statistical evaluation and verification by application to Devils Hole core DH-11 calcite: Isotopic composition of CaCO 3 by CF-IRMS journal October 2002
Crustal deformation along the Altyn Tagh fault system, western China, from GPS journal December 2001
Case studies of plagioclase growth and residence times in island arc lavas from Tonga and the Lesser Antilles, and a model to reconcile discordant age information journal September 2003

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