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Apr 03, 2024Open Access
Low permeability reservoirs are the main object of future oil and gas exploration and development in China. To achieve the efficient development of low-permeability reservoirs, the classification, geological and development characteristics and main exploitation technology are systematically analyzed by comparing and analyzing the development characteristics of 68 low-permeability sandstone oil fields at home and abroad. At the same time, starting from the analysis of reservoir damage caused by m...
Oct 18, 2023Open Access
The Dongdao Haizi Depression is one of the important oil and hydrocarbon producing depressions in the Junggar basin and the Permian formations are the main hydrocarbon source rocks and the main hydrocarbon producing formations in the Dongdao Haizi Depression. In this paper, through the determination of the TOC and the S1 S2 of the hydrocarbon source rocks of the lower Urho formation of the Permian, we judge that this hydrocarbon source rock belongs to the better oil-generating category, and th...
Mar 14, 2023Open Access
In recent years, Convolutional Neural Network (CNN), as a deep learning algorithm, has been widely used in many fields such as computer vision and speech recognition. In the field of geological exploration, CNN has also made great progress. This paper reviews the latest research progress of CNN in the field of geological exploration, and focuses on the application of CNN in logging and seismic exploration. We first introduce the basic principles of CNN, then introduce the specific applications o...
Jan 04, 2023Open Access
In the process of offshore exploration, wireline formation sampling technology is an important means to identify the properties of reservoir fluid. However, due to the invasion of drilling fluid, reservoir permeability, pumping efficiency and other factors, the cable formation test operation often cannot obtain relatively pure undisturbed formation fluid samples, resulting in the difficulty of judging the properties of reservoir fluid. In this paper, three methods are compared and analyzed. One ...
Dec 31, 2022Open Access
The western margin of ordos basin as the main exploration area, because the thermal evolution process of source rocks in the western margin of the basin system research is not deep enough, seriously restricts the evaluation and exploration of oil and gas resources, regional exploration has not been a big breakthrough. In view of this, based on the restoration of burial history and thermal evolution history of source rocks, this paper analyzed and summarized the differences in thermal evolution o...
Sep 26, 2021Open Access
Soil pollution assessment was carried out in seven oil producing areas in Rivers State, and also in Nnamdi Azikiwe University, Awka which served as the control area. Five composite soil samples from five different locations were randomly collected in each local government area (L.G.A.) with oil deposits, at a depth of 1 metre using soil auger. The samples were air-dried, ground, sieved and analyzed for pH, electrical conductivity, moisture content and heavy metals (cadmium, chromium, lead and ni...
May 19, 2020Open Access
This article focuses on how to control the pressure in the high-pressure tubing. First, an overall analysis of the system is performed to determine the pressure balance conditions of the high-pressure fuel pipe; that is, the mass of fuel flowing out of the high-pressure fuel pipe is equal to the mass of fuel flowing in. This article uses Excel to fit and organize the data in all data processing. When solving differential equations of pressure and density, the fourth-order Runge-Kutta formula is ...
May 18, 2020Open Access
This paper is based on the background of China Undergraduate Mathematical Contest in Modeling Competition A in 2019. Corresponding analysis based on the data given in this question, calculated changes in pressure in the high-pressure tubing according to the different operating conditions for fuel entry and spewing out, in order to determine some operating parameters of the fuel injection system, so as to improve engine efficiency and economic efficiency. The differential equation is constructed ...
Feb 20, 2017Open Access
The lubricating oils are essential for operating engine with high efficiency. Therefore, the physical properties of oil such as flash point, pour point, kinematic viscosity, specific gravity and the American Petroleum Institute are necessary to be studied to indicate good quality of the lubricating oil. In this study, we compare the physical properties of two virgin oils with re-refining oil. ...
Dec 05, 2014Open Access
A
swellpacker has the advantages of high isolation reliability and good gas
migration resistance in open holes. This paper analyzed the contact pressure
and stress distribution of the downhole swellpacker, and optimized rubber
structure for various formations. 1) The research shows that thermal expansion
can better explain the expanding process of the rubber after adsorption of oil.
2) The maximum contact pressure occurs in the middle of rubber, and the sealing
effect of the packer increases exp...
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