220 Result(s)
within
English
Earth Sciences
Rui-** **ao
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Article
5G assisted GNSS precise point positioning ambiguity resolution
This study proposes a model using 5G time-of-arrival data to assist global navigation satellite system precise point positioning ambiguity resolution. Specifically, the model addresses the problem of PPP requi...
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Article
Initial and comprehensive analysis of PPP time transfer based on Galileo high accuracy service
European Galileo officially provided global users with the initial high accuracy service (HAS) through Galileo satellites for free on January 24, 2023. The emergence of the Galileo HAS provides the possibility...
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Article
Numerical study on uplift capacity and behavior of plate anchor considering different dilation angles
The plate anchor has been commonly used to stabilize the sheet pile walls, bridge abutments, transmission towers, and mooring systems by providing uplift resistance. This study included a series of numerical s...
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Chapter and Conference Paper
Comparison Between Commercial Assessment and Reserves Value Evaluation of Petroleum Project
Reserves value evaluation is an important way to determine the remaining economic reserves and estimate the value of reserves. At present, the reserves value evaluation method often used in the industry is cas...
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Chapter and Conference Paper
Global Helium Supply and Helium Supply Safety for China
As a rare gas resource, helium is commonly used in defence, medicine, superconductivity and other high-tech fields. It plays a significant role in national security and technological development. This paper co...
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Chapter and Conference Paper
Research on Multi-channel Power Supply Method of New Intelligent Distributor
In view of the problems of the existing power supply module of downhole tools, such as narrow output voltage range and difficult to meet the complex power supply requirements, a new intelligent production dist...
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Chapter and Conference Paper
Impact Analysis of Different Production History Input Methods on Test Well Interpretation Results for Africa Low Productivity Swabbing Wells
Some blocks in Africa use swabbing for well testing due to low productivity characteristics. As such, the bottom hole flowing pressure does not decrease continuously, but changes in a jaggies pattern with the ...
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Chapter and Conference Paper
Forecasting Surface Facilities Investment Based on Factor Analysis and Multiple Regression Analysis
Surface facilities investment is a critical component of engineering investment estimation, which holds a relatively significant proportion of the total investment. Reliable engineering investment estimates ar...
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Chapter and Conference Paper
Research on the Collaborative Method of Underground Gas Storage and Single Well Self-drive for Enhanced Oil Recovery
The injection and production characteristics during the construction and operation of underground gas storage are periodic injection of gas into sealed geological bodies, followed by regular extraction. Underg...
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Chapter and Conference Paper
Synthesis and Application of High Temperature Resistant Solid Acid Based on Polymer Coating
Acidizing pre-treatment is a frequently employed technique to address technical challenges in reservoir fracturing and excessive pump pressure at the wellhead during hydraulic fracturing construction. The deve...
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Chapter and Conference Paper
Study on Microscopic Seepage Mechanism During Fracturing Process in Tight Reservoir
Tight reservoirs usually have ultra-low permeability, so fracturing must be carried out during production. Due to different injection velocities and rock-fluid properties, in the fracturing process, oil-water ...
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Chapter and Conference Paper
Preprocessing and Application of Resistivity Logging After Casing Data
Resistivity Logging after Casing (RLAC) can measure formation resistivity in cased wells, which shows unique advantages in reservoir monitoring and residual oil and gas resource evaluation, however, the origin...
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Chapter and Conference Paper
The Novel Dynamic Monitoring Technology and Analysis Methods for Deep Carbonate Reservoirs
Deep carbonate reservoirs have become a hot spot in oil and gas exploration and development. However, due to the heterogeneous nature and diverse multi-scale storage space of fissure-cave reservoirs, it is dif...
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Chapter and Conference Paper
A Comprehensive Well Productivity Evaluation Approach and Sensitivity Analysis for a HPHT Ultra-deep Water Gas Reservoir
Well testing in ultra-deep water reservoirs is crucial for well productivity evaluation, whereas well testing time is very limited due to rig days concerns, safety and drillship well testing equipment constrai...
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Chapter and Conference Paper
Research on the Mechanism and Technical Limits of Huff and Puff in Natural Water Drive Reservoir
Carbon dioxide huff and puff technology is widely used in X oilfield. At present, there are many kinds of huff and puff technologies in the field, but the oil increasing mechanism of different huff and puff te...
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Chapter and Conference Paper
Study on Flow Field Evaluation and Adjustment Countermeasures of Low Permeability Reservoirs in Bohai Bay Basin
The reserves of low-permeability reservoirs account for a relatively large proportion in Bohai Bay Oilfield. The key to ensuring the effect of waterflooding development in low-permeability reservoirs is to est...
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Chapter and Conference Paper
Efficient Numerical Simulation Grid System for Massive Bottom Water Reservoir
The scheme of numerical simulation grid directly affects computational accuracy, speed and convergence. For massive bottom water reservoir, there is no stable restraining barrier inside, so gravity differentia...
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Chapter and Conference Paper
Liquid Leakage Model in Plunger Lift
Gas well effusion is an important cause of low production and a common problem in the later production period. It seriously threatens the stability of gas well and even causes the shutdown, which greatly reduc...
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Chapter and Conference Paper
A New Technology for Enhanced Oil Recovery in Tight Oil Reservoirs: CO2/Low Interfacial Tension Viscoelastic Fluid Co-flooding
Tight reservoirs have poor physical properties, strong heterogeneity and low water flooding natural productivity. CO2 flooding can effectively improve oil recovery and reduce carbon emissions, but CO2 flooding is...
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Chapter and Conference Paper
Development Sequence Optimization of Fault-Block Oilfields Based on the Back Propagation Neural Network Model Improved by Imperial Competition Algorithm
A well-defined development sequence of each fault block in a fault-block oilfield is the prerequisite for field development plan design. Where there are very few fault-block oilfields, the method of numerical ...
