Jinliang Zhang

The accurate determination of geological age is a key to understanding the history and process of paleolake evolution and oil and gas exploration in continental lake basin. However, improving the accuracy of geological age has always been a difficult scientific problem. A 609-m-thick, continuous lacustrine mudstone and sandstone succession in Chezh...

Aiming at the sensitivity problems of uncertain factors such as parameter variation, external disturbance and friction for the permanent magnet synchronous motor control system of electric vehicle, a fractional order complementary non-singular terminal sliding mode control method based on neural network is proposed. The mathematical model of perman...

The accurate determination of geological age is the key to understanding the evolutionary history and process of earth, but improving the accuracy of geological age has always been a scientific problem. Astronomical cycle analysis is an effective method developed for high-resolution stratigraphic research in recent years. We apply this method to im...

Fluvial reservoirs are crucial for oil and gas exploration. In the Jurassic formations of Chepaizi anticline, ancient channels can be identified based on seismic facies similar to incised valleys. This study focuses on three key issues. Firstly, it aims to demonstrate the capability of spectral decomposition interpretation in distinguishing ancient...

Many types of sedimentary systems occur in the middle of the third member of the Shahejie Formation (E2S32) of the Paleogene in the Dongying Sag east of the Bohai Bay Basin. Due to the topography and material supply, traction and gravity flow depositions are intertwined in this area, and the sand body types are complex and diverse, making it challe...

The Lishui Sag in the East China Sea Shelf Basin has great oil and gas exploration potential but its research level is relatively low. In order to understand the geological background and sedimentary environment of the Paleocene in the Lishui Sag, this paper used X-ray diffraction clay mineral analysis, ICP-AES element analysis and other geochemica...

It is important to identify the location of gravelly sandstone in Taoerhe Sag, an oil target area in the Chezhen Depression. To date, most attention has focused on sedimentary characteristics; hence, information regarding a clear sensitivity analysis of seismic attributes is incomplete. To address this, we used well analysis and seismic attribute i...

The Chezhen Sag, located in the northwestern Jiyang Depression, is one of the most important oil-bearing sags in the Bohai Bay Basin. Due to the low degree of exploration in the sag, paleosalinity and sedimentary environment of the sag in the 3rd Member of Paleogene Shahejie Formation (Es3) is not clear. Recovering the paleosalinity and lake level...

The difficult of reconstruction area selection, the unclear closed boundary and the low injection-production efficiency are the main problems restricting the gas storage reconstruction in large-scale low-permeability lithologic gas reservoir. In view of this, this paper proposes a new ‘three zones' cooperative building model which can provide a com...

The Huizhou Depression in the Pearl River Mouth basin has prospective hydrocarbon potential, with Miocene sandstones as its main oil and gas-bearing reservoir. The sandstones in Miocene formation of the Z21 offshore oil–gas field composed of medium-grained, moderately sorted subarkose and lithic arkose. In this study, a total of six depositional li...

The Lishui Sag on the southwest margin of the East China Sea Shelf Basin (ECSSB) is a relatively new oil and gas exploration area, with the Paleocene being one of the most potential oil-bearing intervals in the sag. In this study, combined with the principles of element geochemistry and mineralogy, the salinity characteristics of the paleowater bod...

Abundant oil potential has been confirmed in the Eocene Shahejie Formation (Es) in the Chezhen Sag, but the genetic mechanism of its reservoir has not been fully understood. Based on core observation, thin-section identification, scanning electron microscopy (SEM), X-ray diffraction, and formation pressure measurement, the factors controlling the q...

This paper introduces the topology of the phase-shift full-bridge converter circuit, briefly analyzes the working principle of the circuit, and compares it with the buck converter. The mathematical model and small signal circuit model of the phase-shift full-bridge converter are derived by introducing the mathematical model of the buck converter. A...

To solve the multi-parameter identification problem of permanent magnet synchronous motor (PMSM), an improved Grey Wolf Optimizer (IGWO) algorithm is proposed. Firstly, the nonlinear convergence strategy is introduced to overcome the shortcoming of the linear convergence of Grey Wolf Optimizer (GWO) algorithm. Secondly, the coefficient weights of w...

Ten sandstone samples were chosen to conduct rock pore structure change law experiment before and after injection and production and the NMR fluid test experiment, the changes of pore size, permeability, and space filling degree were compared and analyzed. According to the findings, certain authigenic minerals (authigenic quartz and feldspar) in sa...

In the Z21 oil-gas field, a total of six depositional lithofacies and two depositional elements were identified based on core observation. Three main diagenetic processes, namely mechanical compaction, cementation, and dissolution of Miocene Zhujiang Formation sandstones were identified according to thin section and scanning electron microscope (SE...

Okavango delta is a typical distributive fluvial system, which is composed of a series of sand island-river-swamp networks. River migration in the Okavango delta is analyzed by using satellite images from Google Earth and Alaska Satellite Facility (ASF). Four configuration characterization parameters are selected to depict and measure the meanderin...

Hydrocarbon source correlations and the determination of hydrocarbon accumulation models in petroliferous basins with multiple potential source rocks are significant for hydrocarbon exploration. In this study, on the basis of gas chromatography and gas chromatography-mass spectrometry experiments, the oil origin was determined by a multiparameter o...

The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modeling (FSM), there are still some areas that can be improved in the existing models. In this work, the authors present our recent development and...

Sulige gas field has poor reservoir physical properties and strong heterogeneity. The existing development well pattern is difficult to realize the overall effective production of reserves, especially in block SuX. Therefore, this paper takes SuX block in the east of Sulige as an example to describe an effective method suitable for the development...

In this study, the differences in reservoir parameters, such as pore radius, throat radius, and pore-throat ratio, between the east and west subsags of the Lishui Sag are analyzed by using data obtained from a constant-rate mercury injection experiment. Furthermore, the quality of the reservoirs in the two subsags is systematically evaluated. Resul...

The Nenjiang Formation, south of Songliao Basin, has many hydrocarbon bearing units, but currently the understanding of the distribution of viable reservoir sandstones is too limited to support a development strategy. Therefore, a detailed study on the sedimentary microfacies and reservoir properties has been completed in order to reduce uncertaint...

The hydrocarbon generation model and hydrocarbon potential are investigated in the Lishui Sag, based on gold-tube pyrolysis experiments of deeply buried type Ⅲ kerogen. From this, we discuss the classification of kerogen types of source rocks with mixed organic matter sources. The hydrocarbon generated from the source rocks of the Lingfeng Formatio...

This paper analyzes the motor flux linkage equation, voltage equation, electromagnetic torque equation and coordinate transformation and three-phase inverter space vector control algorithm. On this basis, the position signal processing model, phase current signal processing model, initial rotor positioning model, Clark transform model, park transfo...

For implementing lithium battery SOC estimation on the wireless sensor mobile robot platform, a mathematical relationship model based on Thevenin model is proposed and the model parameter of experimenting battery is identified. Considering the battery electromotive force, battery capacity and battery charge-discharge efficiency factors effects on t...

The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modelling (FSM), there are still some shortcomings to the existing models. In this work, the authors present our recent development and application o...

The restoration of the denudation thickness is the basis for quantitatively analyzing the basin burial history, thermal evolution history and hydrocarbon accumulation conditions. The well data is not sufficient to do this in the southern Lishui Sag with only 5 wells, so the new, high-quality three-dimensional (3D) seismic data is essential. The met...

Tight oil‐bearing sandstones in the Chang 4+5, 6 and 7 Members of the Upper Triassic Yanchang Formation in the Ordos Basin, north‐central China, in general consist of fine‐grained, moderately‐ to poorly‐sorted lithic arkoses (average Q53F30R17) deposited in a fluvial‐dominated lacustrine‐deltaic environment. Diagenetic modifications to the sandston...

After over 20 years of development in Daqingzijiang Oilfield, isolated sand bodies under the delta front and pro-delta in the Qingshankou Formation(qn)have become important oil and gas reservoir bodies. However, the cause for large amounts of isolated bar sand bodies in the lake-basin delta sediment system has not been reported in China. This artic...

Estimation of base level changes in geological records is an important topic for petroleum geologists. Taking the Paleocene Upper Lingfeng Member of Lishui Sag as an example, this paper conducted a base level reconstruction based on Basin Filling Modelling (BFM). The reconstruction was processed on the ground of a previously interpreted seismic str...

The nearshore sand bar-sheet sedimentary system of the K-Successions sandstones of the Zhujiang Formation (23.8-16.5 Ma) in H21 Area of Huizhou Depression, Pearl River Mouth Basin has been identified in this research according to lithological characteristics, lithofa-cies, sedimentary sequence and seismic attributes. Seven lithofacies were recogniz...

A suite of crude oils from the Carboniferous volcanic reservoirs in the eastern Chepaizi Uplift, Junggar Basin, was analyzed to study the alteration of molecular compositions by severe biodegradation and the accumulation mechanisms of the crude oils. The investigation indicates that most of the crude oils of the Carboniferous reservoirs in the east...

The Lishui Sag is on the southwest margin of the East China Sea Shelf Basin (ECSSB), which is located on the continental shelf of the East China Sea. The analysis of sedimentological signatures is based on 217 m (712 ft) of Paleocene cores showing a wide variety of lithofacies, sedimentary structures, ichnological data, seismic data, and log data....

The Changling Depression is the largest and most resource-abundant reservoir in the South Songliao Basin, NE China. The petroleum evolution rules in the Lower Cretaceous deep tight sandstone reservoir are unclear. In this study, 3D basin modeling is performed to analyze the large-scale petroleum stereoscopic migration and accumulation history. The...

The Lishui Sag is located in the southeastern part of the Taibei Depression, in the East China Sea basin, where the sag is the major hydrocarbon accumulation zone. A three dimensional modelling approach was used to estimate the mass of petroleum generation and accumulated during the evolution of the basin. Calibration of the model, based on measure...

Fan delta systems have long been studied as a kind of good hydrocarbon reservoirs. Although many models have been raised according to their local conditions, there still exists some controversies regarding the formations of the ones developed in continental syn-rift settings. Taking Paleogene Es3²⁺³ of Gaobei Slope Belt as an example, this paper co...

The Z21 gas field is the only one gas field in the Huizhou depression. The distributions of sandstone and mudstone in the adjacent west zone control the extent of the Z21 gas field, making the confirmation of the reservoir connectivity between the west zone and main zone (RCWM) crucial. In this study, a practical workflow was proposed to confirm th...

Most vertical wells pass through a mudstone interface at large angles (70–90\(^\circ \)), whereas the contact angle between a horizontal well and a lithologic interface is generally relatively small (20–50\(^\circ \)). Therefore, in the vicinity of this contact point, certain interfaces can be detected through a gamma curve (less than 45 cm), and t...

Fracture is one of the most important factors through the whole process of low-permeability reservoir development. Biandong oilfield is a typical low-permeability fractured sandstone reservoir, and has stepped into high water cut stage; thus, the waterflooding effect is poor. Therefore, many contradictions such as high moisture content, decreasing...

Flow units classification can be used in reservoir characterization. In addition, characterizing the reservoir interval into flow units is an effective way to simulate the reservoir. Paraflow units (PFUs), the second level of flow units, are used to estimate the spatial distribution of continental clastic reservoirs at the detailed reservoir descri...

A gas–water two-phase fluid is present in a reservoir before a water-flooded sandstone gas reservoir is rebuilt. Therefore, in the process of injection and production of the rebuilt underground gas storage, the injected gas is easily blocked by the water in the pores, and the efficiency is low, resulting in a significant loss of gas. The study comp...

In this study, three-dimensional (3-D) geostatistical models were constructed to quantify distributions of sandstone and mudstone. We propose a new method that employs weight coefficients to balance the sandstone and mudstone data from irregular well patterns during stochastic modeling. This new method begins with classifying well groups according...

Taking K-successions of the H-Zone of the Pearl River Mouth Basin as a testing example, we used two kinds of approaches to implement the microfacies identification. One is a direct identification, the other is an indirect approach in which we conducted the lithofacies classification first and then identified the microfacies based on previously esti...

The Eocene Nanpu depression is located in the north part of Bohai bay basin and is an EW-trending depression, filled with associated coarse clastic deposits in the northern margin. Two fan delta systems have been recognized in the Eocene deposits of the depression. Transgressive fan delta and regressive fan delta systems were deposited when the bas...

Wenliu oilfield is one of those typically structural reservoirs in Dongpu depression in China. Wen79 fault block is located in the south of Wenliu oilfield. Nowadays, it has entered the secondary oil recovery stage with a high water cut. Accumulated repository from long-term exploration and production makes the opportunity to fulfill a fine descrip...

To reduce or avoid some of the ambiguities in a heterogeneous reservoir, a fine three-dimensional model would be inevitably established with the application of geostatistical techniques. BD oilfield is a low-permeability fractured reservoir with many fracture types, which composes a multi-azimuthal fracture system, causing strong anisotropy and het...

The analysis of 2D and 3D seismic data, drilled cores and well log data has resulted in a sequence stratigraphic framework of the Cretaceous Denglouku Formation in the Changling Depression in the underfilled Songliao Basin. The Cretaceous Denglouku Formation can be divided into four third-order sequences. Each sequence consists of two systems tract...

The Wei2 block of Weicheng oilfield is characterized by complicated structure mainly caused by high degree of fault development. Multiple reservoir types are found in this block and the reservoir heterogeneity is severe. The oil and gas reservoirs have already stepped into the stagnant stage of a great water-cut degree together with a rapid product...

The East China Sea Shelf Basin (ECSSB) is a typical back-arc rift basin and is divided further by a series of sags and basement ridges. The Lishui Sag on the southwest margin of the ECSSB, is underlain by a productive, gas-prone, marine Paleocene section. In combination with sequence stratigraphy and seismic geomorphology, an integrated approach wa...

Non-marine tight-gas sandstones have not been studied intensively in terms of diagenesis and reservoir-quality evaluation. This paper investigates the sandstones in the Lower Cretaceous Denglouku Formation in the Songliao Basin, NE China, which comprise a tight reservoir for natural gas. Core samples of the sandstones were obtained from eight wells...

Detailed stratigraphic analysis of the second member of Shuangyang Formation of Y45 Block of the rift Yitong Basin in northeast China has revealed that the study area, previously interpreted as fan delta systems, actually originated mainly in relatively deep lacustrine setting with nearby line source. Two depositional systems have been recognized:...

It is favorable that the sequence-stratigraphic characteristic and sedimentology analysis of Paleogene and the associated deposits of Shahejie formation (FM.) be allowed a number of sedimentary evolution stages to be characterized and a sedimentary model of the lower second submember of Shahejie FM. (ES2) to be established. An integration of drilli...

This study deals with the diagenesis of steep-slope glutenites in the view of relationship between depositional facies and diagenetic alterations. The Lower Member of Shahejie glutenites sit along steep slopes of an intracontinental lacustrine basin, which is an important area of hydrocarbon exploration in eastern China. This kind of reservoir rock...

Numerical simulation can provide guidance to resolve injection production contradiction during the operation of underground gas storage, it is the key to ensure the smooth operation of underground gas storage. To perform accurate numerical simulation, accurate gas full-component analysis data is essential. In this study, the full-component experime...

With the rapid development of automobile instrument technology, the traditional combined instrument has many limitations on the display. A real-time LCD system for the pure electric vehicle based on the CAN bus is proposed in the paper. The system network hierarchy architecture was analyzed and the system hardware architecture, information exchange...

From the ultracapacitor theoretical charging model, the influence of charging efficiency on constant current and constant voltage charging mode is studied in the paper. According to the actual environment, the different charging modes of the ultracapacitor are tested with different current. Through the analysis of the test data, the validity of the...

An algorithm of recursive parameters estimation for Partnership for a New Generation Vehicle (PNGV) model of LiFePO4 lithium-ion battery is proposed. Firstly, the states vector and parameters vector are obtained by discretizing the model's states equation. And then a projection algorithm based on equation error method is used in the process of the...

The relationship between the battery current and the electric vehicle speed is studied in the paper. A complete electric vehicle information acquisition system is designed, which is installed on the existing electric vehicle by the rational wiring. According to the actual environment, it chose two kinds of road conditions: flat road and uphill, and...

Accurate price forecasting becomes more and more important for all market participants in competitive electricity markets, which can maximize producers’ profits and consumers’ utilities, respectively. In this paper, a new hybrid forecast technique based on wavelet transform (WT), chaotic least squares support vector machine (CLSSVM) and exponential...

Ultrafine precipitated silica was obtained from Na2SiO3 solutions and simulative lime kiln gas by carbonization process. The surface modification of ultrafine precipitated silica using 3-methacryloxypropyltrmethoxysilane (KH570) at the rear stage of carbonization process was investigated. The optimum synthesis condition of precipitated silica was o...

This study states the spatial and temporal distribution of diagenetic alterations and their influence on reservoir quality in the lower member of Shawan sandstones of the Chepaizi Uplift in the Junggar Basin, NW China. Sandstones in this unit, which contains heavy oil, are composed of mostly lithic arkose deposited in a braided fluvial environment....

Electricity price forecasting has become necessary for power producers and consumers in the current deregulated electricity markets. Seeking for more accurate price forecasting techniques, this paper proposes a new hybrid method based on wavelet transform (WT), autoregressive integrated moving average (ARIMA) and least squares support vector machin...

For the respective performance characteristics of the global positioning system (GPS) and inertial navigation system (INS), a tightly coupled GPS/INS integrated navigation system based on the pseudo-distance difference was proposed. The paper presents the detail study and theoretical analysis of the kalman filter algorithm for the GPS/INS integrate...

Photovoltaic (PV) power generation is a significant way to deal with the energy crisis and protect the environment both in China and overseas. On the basis of analysis of the four factors that impact the development of China's PV power generation, including solar-energy resources in China, PV industry conditions, research and development of solar-c...

The estimation of State Of Charge (SOC) of battery pack attracts wide attention in battery manufacture and application, which is a key issue in Battery Management System (BMS). A practical three-layer BP neural network is proposed and used to estimate the SOC of LiFePO4 lithium-ion battery pack, which consists of three series groups with each group...

This paper proposes a novel price forecasting method based on wavelet transform combined with ARIMA and GARCH models. By wavelet transform, the historical price series is decomposed and reconstructed into one approximation series and some detail series. Then each subseries can be separately predicted by a suitable time series model. The final forec...

In order to accurately describe the reservoir physical property and its through-going characteristics, this paper establishes the sedimentary microfacies model and the microfacies controlled property model step by step using the facies-controlled modeling technology and on the basis of study results on geology, logging and development performance....

Terminal fan system is distinguished in Hai120 block, which consists of three different microfacies proximal subfacies, middle subfacies and distal subfacies are identified by combining the core observation, log interpretation and electron microscopy viewing, each subfacies includes a number of microfacies. Reservoir characterization plays an essen...

Early Qingshankou formation, basin dropped sharply, and the syncline structure started to form. This area was under the control of tensile and torsion stress, and on the basis of the early fracture of basal plane, a series of fractures formed which showed an en echelon arrangement on horizontal and did not extended far, and local structures were ma...

3D computer modeling is the most important procedure in the reservoir fine description, It can help us to study the reservoir with quantitative and three-dimensional methods. This paper presents an example of the application 3D modeling to the first sand set of the upper ES2 reservoir in the south region of Pucheng Oilfield. Based on the basic data...

Wei2 block of Chian Oilfield is deposited by Fluvial delta which have three major depositional microfacies: distributary channel, mouth bar and sheet sand. Through more than 10 years' development, the underground reservoir is complex and takes on some acute contradictions. Thus it is an emphasis to build a fine reservoir model for the modern reserv...

Shanian oilfield is constituted by a number of complex fault-blocks, after nearly 10 years of waterflooding development, the relation between oil and water underground reservoirs is complex. In this case, it is difficult to predict accurately the distribution of inter-well reservoir parameters and the rich region of residual oil. Thus it is an emph...

The sequence stratigraphic division and correlation are the key of the research for glutenite reservoir. For the reasons that lacking shale marker horizons and paleaobiological fossils in glutenite sediments, the conventional treatments of strata demarcation based on well logging are difficult and inefficient. Aimed to the great thick glutenite in...

In view of the high accuracy and predictability, high-resolution sequence stratigraphy had been extensively applied to oil exploration and gotten prominent practicable results. This article takes the first layer, upper second submember, Shahejie (沙河街) Formation from Pucheng (濮城) oilfield as an example to analyze the application of high-resolution s...

This paper represents a study using Artificial Neural Networks (ANN) to perform automatic interpretation of lithofacies in a reservoir scale. This technique having been used successfully to interpret lithofacies automatically in the Sha20 Block, Shanian oilfield. Description and interpretation from a cored section in the key well was used to train...

Delta front is distinguished in the Sha19 block, third member of the Funing formation in Shanian oilfield, according to guidelines defined by Mcpherson and others. Four major depositional microfacies are identified consisting of distributary channel, interdistributary bay, mouth bar and sand sheet. The architecture of the reservoir, governed by the...

This paper presents a study using artificial neural networks (ANN)to perform automatic estimation of rock permeability in a reservoir scale. Three well log responses (acoustic time, gamma-ray and deep induction) were used to predict formation permeability. Permeability from core data and conventional computing have been used to test the results of...

Artificial neural network technique has been widely used in the reservoir characterization at present time. With the advantage of nonlinear computing and self-error correction, it can assist petroleum engineers in solving some complex reservoir engineering problems, such as formation porosity prediction from geophysical well logs with accuracy comp...

The technology of 3D computer modeling has been widely used in reservoir fine description, especially in the development phase. Itpsilas an effective way to enhanced oil recovery and reduce water cut. This paper presents an example of the application 3D modeling to the series of deep strata in Xiaermen Oilfield, Henan, China. In this paper, the geo...

The geologic reservoir fine description and reservoir engineering approaches are combined to study the structure characteristic, the sedimentary facies and the distribution of the remaining oil in the lower-middle series of strata of Hetaoyuan formation in Xiaermen Oilfield. First the detailed distribution of the microfacies is studied based on cor...

The sixth member sandstone of Yanchang formation in Houxing region is mainly fine grained arkose. Diagenetic minerals include grain-coating chlorite, laumontite, calcite and quartz cement, as well as overgrowth feldspar, illite, albite and so on. The development of grain-coating chlorite contributes to the conservation of original intergranular por...

Facies are important in reservoir modeling because the petrophysical properties of interest are highly correlated with facies type. The knowledge of facies constrains the range of variability in porosity and permeability. This paper presents a stochastic modeling for characteristics of petroleum reservoirs constrained by facies to yield results coi...

Clastic reservoir characterization typically starts with the modeling of the facies distribution and geometry. The architecture of the reservoir, governed by the facies geometry, is a major source of heterogeneity in such clastic systems. The use of geostatistiscal tools for modeling reservoir heterogeneities and assessing uncertainty in reservoir...

The Silurian sandstones of the Tazhong area are an important oil exploration target in the Tarim Basin, western China. This study deals with the Lower Silurian of the Kalpingtag Formation, which was deposited in a braided delta system. Four major depositional microfacies are identified consisting of distributary channel, interdistributary bay, fron...

Terminal fans have formed the sedimentary system of the 2+3 sands of the upper second member, Shahejie formation in the west of the Pucheng Oilfield, Bohai Bay Basin, East China. Based on well logging data and physical properties of the reservoir beds, the 2+3 sands were divided into 16 sublayers. The heterogeneity of reservoir beds and distributio...

As the relative sea-level rose, a paleo-estuary was formed by the marine inundation of the braided river incised valley during the period of the lower sub-member of the upper member of the Kalpingtage. formation of the Silurian in the Tarim Basin, west China. Sandstone-mudstone rhythmite, tidal structures and bimodal cross-bedding are common in the...