Controlling Factors of Hydrocarbon Accumulation and Optimization of Favorable Blocks for Both Flanks of Putaohua Reservoir in Southern Daqing Placanticline

2012 ◽  
Vol 214 ◽  
pp. 23-26
Author(s):  
Dian Shi Xiao ◽  
Hong Li Chen ◽  
Hai Feng Chen
Keyword(s):  
Oil And Gas ◽  
Vertical Movement ◽  
Controlling Factors ◽  
Production Test ◽  
Reverse Fault ◽  
Hydrocarbon Accumulation ◽  
Accumulation Process ◽  
Lateral Migration ◽  
Migration Pathway ◽  
Oil Source

Putaohua reservoir in south of Daqing Placanticline is rich in oil and gas resources. However, the distribution of oil and gas is so complex and the hydrocarbon accumulation process is still unclear by now. Due to low proven reserves, it is not effective to explore the reserves. By use of the logging interpretation and results of production test and together with analysis of the oil and gas distribution and hydrocarbon accumulation process of Putaohua reservoir in south of Daqing Placanticline, the controlling factors of hydrocarbon accumulation in aspects of oil and gas migration pathway, developmental characteristics of sand, local structure etc are discussed in order to optimize potential blocks. The hydrocarbon of Putaohua reservoir in both flanks in south of Daqing Placanticline is from the local K1qn1 source rock. Hydrocarbon migration mainly depends on vertical movement and is supported by short-distance lateral migration; hydrocarbon accumulation is mainly affected by restrictions of oil source fault and high fault block, so that most of hydrocarbon accumulate in the distributary channel and distal bar of reverse faulting footwall, horst, reverse fault and other high fault blocks where are closely adjacent to the oil source faults.

Fault Control on Hydrocarbon Accumulation in South Beier Sag

2013 ◽  
Vol 868 ◽  
pp. 202-206
Author(s):  
Chao Wang ◽  
Guang Fu ◽  
Ying Jie Dong
Keyword(s):  
Oil And Gas ◽  
Reverse Fault ◽  
Hydrocarbon Accumulation ◽  
Lateral Migration ◽  
The South ◽  
Conducting Channel ◽  
Second Fracture ◽  
Fracture Development ◽  
The Relationship

In order to research the relationship between the fracture and reservoir in the south beier sag, using the method of integrating theory with practice, Through research fracture development and system partition and anatomy of the reservoir shows that the fracture on the formation of the reservoirs mainly the following two aspects, First,the fracture provides migration conditions for oil and gas namely 1 early extend fracture make 1st member of Nantun group surcerock and the south 2nd member of Nantun group reservoir side joint, which is beneficial to oil lateral migration; 2 the long-term development fracture for secondary reservoir formation provides favorable conducting channel; Second, Fracture provides shield condition for oil and gas accumulation, namely 1 reverse fault "back on" low uplift area native reservoir accumulation are controlled; 2 reverse fault - fan control assembled parts of the secondary hydrocarbon reservoirs.

Analysis on Migration Patterns and the Distribution of Oil-Gas Controlling Factors of Yushulin Area

2012 ◽  
Vol 616-618 ◽  
pp. 821-832
Author(s):  
Lei Zhang ◽  
Qian Yang ◽  
Xue Juan Zhang ◽  
Zhi Ru Yang
Keyword(s):  
Vertical Migration ◽  
Oil And Gas ◽  
Migration Pattern ◽  
Hydrocarbon Generation ◽  
Gas Migration ◽  
Lateral Migration ◽  
Migration Patterns ◽  
Migration Pathway ◽  
Oil Source ◽  
Oil Gas

In order to ascertain the oil and gas migration pattern and its effect on gas/oil distribution of Yushulin area of Sanzhao depression in Northern Songliao Basin, this paper makes a comprehensive analysis of the oil source condition, the source-reservoir-seal assemblage relationship, the oil and gas migration pathway and patterns in Putaohua and Fuyang oil reservoir, summarizes the oil and gas migration patterns of Yushulin area, and analyses different oil and gas migration pattern influence on oil/gas distribution in Yushulin area combined with structural history, hydrocarbon generation and expulsion history, sedimentary microfacies research. The results show that there are mainly four types of oil and gas migration patterns in Yushulin area: indigenous – downward type - vertical migration pattern, indigenous - normal type - vertical migration pattern, proximal - lateral migration pattern and proximal – “U” type - complex migration pattern.

Controlling Factors of Hydrocarbon Accumulation in Talaha-Changjiaweizi Area

2013 ◽  
Vol 734-737 ◽  
pp. 1175-1178
Author(s):  
Hong Qi Yuan ◽  
Ying Hua Yu ◽  
Fang Liu
Keyword(s):  
Physical Properties ◽  
Oil And Gas ◽  
Controlling Factors ◽  
Source Rocks ◽  
Hydrocarbon Accumulation ◽  
Gas Migration ◽  
Main Controlling Factors ◽  
Sedimentary Microfacies ◽  
Plane Distribution ◽  
Distributary Channel

Based on the analysis of the relationships between the conditions of structures, sedimentations, source rocks, cap rocks, faults, oil and gas migration passages and traps and hydrocarbon accumulation, the controlling factors of hydrocarbon accumulation and distribution was studied in Talaha-changjiaweizi area. It is held that the source rocks control the hydrocarbon vertical distribution, the drainage capabilities control the hydrocarbon plane distribution, fracture belts control the hydrocarbon accumulation of Talaha syncline, underwater distributary channel is a favorable accumulation environment and reservoir physical properties control the oil and water distributions. Therefore, it is concluded that source rocks, fracture belts, sedimentary microfacies and reservoir physical properties are the main controlling factors of hydrocarbon accumulation and distribution in Talaha-changjiaweizi area.

The Application Extension of the Four Key Controlling Factors for the Formation of Lithologic Pool in Hongliuquan Area, Qaidam Basin

2012 ◽  
Vol 616-618 ◽  
pp. 441-449
Author(s):  
Kai Chen ◽  
Zhen Liu ◽  
Jun Hui Zhang
Keyword(s):  
Fluid Dynamics ◽  
Formation Process ◽  
Qaidam Basin ◽  
Controlling Factors ◽  
Target Area ◽  
Hydrocarbon Accumulation ◽  
Key Factors ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Dynamic Formation

In order to research the application extension of the viewpoint of the four key factors controlling formation process of lithologic traps, the paper was dissected lithologic reservoir dynamically, mainly analyzing the paleo-fluid dynamics, paleo-hydrocarbon migration pathway, paleo-critical physical properties of reservoirs and paleo-sealing conditions of the traps in formation of hydrocarbon accumulation period. The results show that they recover the limited and most important factors for formation of lithologic traps and come back the formation process of lithologic traps availably, and it also can used to be evaluated low exploration basin dynamically, compositely analyzed key factors controlling formation process of lithologic traps and selected advantaged target area. The application of this methodology indicates that it could be widely used in the dynamic formation of lithologic traps and dynamical evaluation of low exploration basin in Hongliuquan area, Qaidam basin.

Types of Hydrocarbon Migration Pathways and Hydrocarbon Accumulation in the Yakela Fault-Convex, Tarim Basin

2013 ◽  
Vol 295-298 ◽  
pp. 2749-2752
Author(s):  
Xiao Long Luo ◽  
Liang Jie Tang
Keyword(s):  
Tarim Basin ◽  
Hydrocarbon Accumulation ◽  
Lateral Migration ◽  
Long Distance ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Fault Type ◽  
Migration Pathways ◽  
3D Seismic Data ◽  
Field Geology

The existence of abundant hydrocarbon has been discovered in the Yakela Fault-convex, Tarim Basin, after reconstructing and superimposing for several periods. Through interpretation of 3D seismic data up to date, combined with the circumferential field geology, after comprehensively analyzing the characteristics of development on hydrocarbon migration passages and its relationship with hydrocarbon accumulation, this paper holds that it is divided into fault type, unconformity type and carrier bed type in the Yakela fault-convex. The unconformities and the carrier beds are the main lateral migration passage of gas and oil for long distance. The faults are the main vertical migration pathway of hydrocarbon, and the hydrocarbon can arrive at any strata with fault. It is significant to know the hydrocarbon migration pathways in the study area for exploration in future.

The Study of the Thrust Fault

2014 ◽  
Vol 962-965 ◽  
pp. 230-233
Author(s):  
Jing Ying Li ◽  
Si Jia Cao ◽  
Ye Jun Jin ◽  
Yun Feng Zhang
Keyword(s):  
Oil And Gas ◽  
Physical Simulation ◽  
Thrust Fault ◽  
Influential Factors ◽  
Lateral Migration ◽  
Forming Process ◽  
Migration Pathway ◽  
Fracture Development ◽  
Designed Experiment ◽  
And Storage

The thrust fault plays an important role in the migration of oil and gas, etc. It can either block the oil and gas lateral migration, or become a good migration pathway. In order to have a more intuitive observation on forming process and study on the vital influential factors of it, the thick and extrusion stress of layers, such as laboratory with special designed experiment deviced by changing the above factors in the thrust fault structure formed by physical simulation experiments. The results show that the thrust fault formed in the basement, near the surrounding fold and associated fractures are associated with development, to a large extent influence the oil and gas migrate and storage. In this experiment, we simulated the process of thrust faults formed visually, providing a basis for predicting the observation analysis and associated folds and associated fracture development and distribution.

Characteristics of Hydrocarbon Accumulation of Putaohua Reservoir in Xingnan Area of Daqing Placanticline

2014 ◽  
Vol 962-965 ◽  
pp. 12-15
Author(s):  
Yong Luo ◽  
Jian Guo Wu ◽  
Fang Zeng ◽  
Ding Jie Huang ◽  
Ya Dong Bai
Keyword(s):  
Success Rate ◽  
Controlling Factors ◽  
Hydrocarbon Accumulation ◽  
Hydrocarbon Migration ◽  
Accurate Evaluation ◽  
Sealing Capacity ◽  
Oil Source ◽  
The Relationship ◽  
Important Significance ◽  
Comprehensive Study

Through comprehensive study on the combination of each accumulation of Putaohua Reservoir in Xingnan area of Daqing Placanticline, analyzing the controlling factors of hydrocarbon accumulation, accumulation rule and the corresponding exploration ideas, Enriching and developing the study of non-structural reservoir in slopes and depressions of Daqing Placanticline. The study shows that faults are well-developed, especially oil source faults which were active during the crucial moment of hydrocarbon accumulation, as for connecting source rock and reservoir and poor sealing capacity, they are the main passage for hydrocarbon migration. The relations between oil source faults and reservoir greatly restrict the distribution and scale of reservoirs. Accurate evaluation of the relationship between faults and reservoirs has an important significance which can give a guide to the surrounding exploration of Daqing oilfield and improve the success rate of exploration.

Study on the hydrocarbon accumulation models of the upper Es3 in the gentle slope belt of Chexi Depression

2020 ◽  
Author(s):  
Shan Zhao ◽  
Hua Liu
Keyword(s):  
Oil And Gas ◽  
Controlling Factors ◽  
Source Rocks ◽  
Hydrocarbon Accumulation ◽  
Gas Reservoir ◽  
Sand Body ◽  
Main Controlling Factors ◽  
Two Stages ◽  
Oil And Gas Reservoir ◽  
Sand Bodies

<p>Based on the analysis of hydrocarbon source, reservoir forming period, composition and classification of transportation system, and the reasons of failure well in Chexi Depression of Bohai Bay Basin，Two types of hydrocarbon accumulation models in gentle slope belt of Chexi area are established and the main controlling factors of hydrocarbon accumulation are defined. There are three sets of source rocks（Es1、middle and lover submember of Es3、Es4）in Chexi area, the different strata of source rocks have great differences in the Pr/Ph and the content of gammacerane. It has been found that the crude oil of Es3 has a good geochemical correspondence with the middle and lower of Es3 source rocks, and has the characteristics of near source accumulation. The hydrocarbon accumulation in the study area exists in the sedimentary period of the Dongying formation and the sedimentary period of the Guantao formation to the present two stages, which is dominated by late filling. There are two stages of oil and gas filling in the inner and middle belts, and only late stage hydrocarbon filling in the outer slope belt. The hydrocarbon transportation system is mainly composed of faults and sand bodies. The effective source rocks in the middle and lover submember of Es3 are connected with the upper reservoir of Es3 in a small area, which can be directly migrated to the upper sandstone reservoir of Es3 to form lithologic oil and gas reservoir. However, most of the oil and gas in the upper Es3 reservoir need to be vertically migrated by means of oil source fault, and then through the contact of sand bodies such as main channel and fan body, the main oil and gas reservoir will gradually move up with the distance from the source rock. The area with direct contact source reservoir configuration relationship is a "sand body lateral migration" reservoir formation mode, and the main controlling factors of reservoir formation are sand body connectivity and reservoir porosity and permeability. The source reservoir configuration area with fault connection type is a "fault sand combination T-type migration" reservoir forming mode, and the main controlling factors of reservoir forming are migration convergence facies (structural ridge and cross-section ridge).The area of passive reservoir contact is "fault sand combination step migration" reservoir forming mode, and the main controlling factors of reservoir forming are migration convergence facies (structural ridge) and lateral sealing of faults in preservation conditions.</p><p>Key words: Chexi Depression; Source of hydrocarbon; Accumulation period; Fault sand transport combination; Reservoir forming mode</p>

Controlling Factors for Reservoirs Distribution of the Putaohua Oil Layer in the Saozhao Sag

2012 ◽  
Vol 616-618 ◽  
pp. 816-820
Author(s):  
Yu Sun ◽  
Shi Zhong Ma ◽  
Bai Quan Yan ◽  
Chen Chen
Keyword(s):  
Oil And Gas ◽  
Controlling Factors ◽  
Hydrocarbon Accumulation ◽  
Gas Migration ◽  
Geological Factors ◽  
Low Amplitude ◽  
Hydrocarbon Distribution ◽  
Oil Gas ◽  
Predominant Direction

Types of found reservoirs and its distribution characteristics of Putaohua oil layer in the Sanzhao Sag were analyzed. The controlling factors of hydrocarbon distribution were investigated. Sanzhao Sag is Sag-wide oil-bearing, but its distribution of oil and water is extremely complicated. The reservoir types are mainly fault block reservoirs, low amplitude structure reservoirs, fault-lithologic reservoirs and lithologic reservoirs. The distribution of reservoirs is mainly controlled by three geological factors: first, long-term inherited nose-like structure is predominant direction of petroleum migration; it induced oil and gas migration at a critical period of hydrocarbon accumulation and formed oil-gas accumulation area. Second, fault across main-line of hydrocarbon migration and high angle skew plug off hydrocarbon, and its side adjacent to Sag is a large number of hydrocarbon accumulation areas. Third, multi-fault region can easily form a fault (-lithological) reservoir accumulation area in the slope of sag.

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO2

2021 ◽  
pp. 1-11
Author(s):  
Sara LIFSHITS
Keyword(s):  
Supercritical Fluid ◽  
Oil And Gas ◽  
Gas Permeability ◽  
Sedimentary Rocks ◽  
Source Rocks ◽  
Reservoir Properties ◽  
Hydrocarbon Migration ◽  
Geological Processes ◽  
Before And After ◽  
Oil Source

ABSTRACT Hydrocarbon migration mechanism into a reservoir is one of the most controversial in oil and gas geology. The research aimed to study the effect of supercritical carbon dioxide (СО2) on the permeability of sedimentary rocks (carbonates, argillite, oil shale), which was assessed by the yield of chloroform extracts and gas permeability (carbonate, argillite) before and after the treatment of rocks with supercritical СО2. An increase in the permeability of dense potentially oil-source rocks has been noted, which is explained by the dissolution of carbonates to bicarbonates due to the high chemical activity of supercritical СО2 and water dissolved in it. Similarly, in geological processes, the introduction of deep supercritical fluid into sedimentary rocks can increase the permeability and, possibly, the porosity of rocks, which will facilitate the primary migration of hydrocarbons and improve the reservoir properties of the rocks. The considered mechanism of hydrocarbon migration in the flow of deep supercritical fluid makes it possible to revise the time and duration of the formation of gas–oil deposits decreasingly, as well as to explain features in the formation of various sources of hydrocarbons and observed inflow of oil into operating and exhausted wells.

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