First-Ever Vessel-Based Large-Scale Propped Fracturing Treatment in a Tight, Deep, Hot Formation in Bohai Bay Yields Multiple Fold Oil Production Increase

2008 ◽  
Author(s):  
Khay Kok Lee ◽  
Binhai Zhang ◽  
Jianming Deng ◽  
Xiaocheng Zhang ◽  
Meng Seng Tan ◽  
...  
Keyword(s):  
Large Scale ◽  
Oil Production ◽  
Bohai Bay ◽  
Production Increase

First-Ever Vessel-Based Large-Scale Propped Fracturing Treatment in a Tight, Deep, Hot Formation in Bohai Bay Yields Multiple Fold Oil Production Increase

2008 ◽  
Author(s):  
Khay Lee ◽  
Binhai Zhang ◽  
Jianming Deng ◽  
Xiaocheng Zhang ◽  
Meng Tan ◽  
...  
Keyword(s):  
Large Scale ◽  
Oil Production ◽  
Bohai Bay ◽  
Production Increase

scholarly journals A Lagrange Relaxation Based Decomposition Algorithm for Large-Scale Offshore Oil Production Planning Optimization

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1257
Author(s):  
Xiaoyong Gao ◽  
Yue Zhao ◽  
Yuhong Wang ◽  
Xin Zuo ◽  
Tao Chen
Keyword(s):  
Production Planning ◽  
Large Scale ◽  
Oil Production ◽  
Original Model ◽  
Decomposition Algorithm ◽  
Scale Model ◽  
Lagrange Relaxation ◽  
Planning Optimization ◽  
Offshore Oil Production ◽  
Offshore Oil

In this paper, a new Lagrange relaxation based decomposition algorithm for the integrated offshore oil production planning optimization is presented. In our previous study (Gao et al. Computers and Chemical Engineering, 2020, 133, 106674), a multiperiod mixed-integer nonlinear programming (MINLP) model considering both well operation and flow assurance simultaneously had been proposed. However, due to the large-scale nature of the problem, i.e., too many oil wells and long planning time cycle, the optimization problem makes it difficult to get a satisfactory solution in a reasonable time. As an effective method, Lagrange relaxation based decomposition algorithms can provide more compact bounds and thus result in a smaller duality gap. Specifically, Lagrange multiplier is introduced to relax coupling constraints of multi-batch units and thus some moderate scale sub-problems result. Moreover, dual problem is constructed for iteration. As a result, the original integrated large-scale model is decomposed into several single-batch subproblems and solved simultaneously by commercial solvers. Computational results show that the proposed method can reduce the solving time up to 43% or even more. Meanwhile, the planning results are close to those obtained by the original model. Moreover, the larger the problem size, the better the proposed LR algorithm is than the original model.

scholarly journals Features of the geological structure, tectonic development and oil and gas potential of the Chezhen depression (Bohai bay basin)

2021 ◽  
Vol 63 (5) ◽  
pp. 8-16
Author(s):  
Sh. Qiu ◽  
N. A. Kasyanova
Keyword(s):  
Large Scale ◽  
Oil And Gas ◽  
Geological Structure ◽  
Fault System ◽  
Bohai Bay ◽  
Industrial Oil ◽  
Tectonic Development ◽  
Geophysical Information ◽  
Oil Deposits ◽  
Gas Potential

Background. In terms of oil and gas, the territory of the Chezhen depression has been studied insufficiently compared to the neighbouring same-range depressions. These depressions complicate the first-order Jiyang depression, geographically coinciding with the largest Shengli hydrocarbon field. In recent years, much geological and geophysical information about the oil geologyof the Chezhen depression has been accumulated, which allows its prospecting oil and gas potential to be assessed.Aim. To reveal regular features of the geological structure and location of oil deposits in the Chezhen depression in order to support the prospecting and exploration work within the Chezhen block of the Shengli field.Materials and methods. A comprehensive analysis of literature data and collected materials was conducted. A historical and geodynamic study of the evolution of the studied area according to literature data was carried out, along with an analysis of the most recent geological and geophysical information and exploration data based on the materials of the “Shengli AKOO Sinopek” oil company. The analysis was based on the data from 52 drilling wells and the results of seismic surveys performed in the central part of the Chezhen depression.Results. Specific features of the block geological structure of the area under study were established, which formed under the repeated influence of large-scale horizontal tectonic movements occurring at different periods of geological history. The role of the most recent fault system in the modern spatial distribution of oil deposits was determined.Conclusions. Our studies demonstrate a great prospecting potential of the Chezhen depression territory, where the discovery of new industrial oil deposits can be expected.

scholarly journals Improving the economic efficiency of oil productionat the “Gazpromneft-Khantos” fields

2021 ◽  
Vol 6 (3) ◽  
pp. 136-143
Author(s):  
Rustam N. Asmandiyarov ◽  
Stanislav Yu. Barkalov ◽  
Rail R. Galeev ◽  
Rustam R. Gumerov ◽  
Yuri A. Katkov ◽  
...  
Keyword(s):  
Economic Efficiency ◽  
Large Scale ◽  
Oil Production ◽  
Project Teams ◽  
Factors Affecting ◽  
Technical And Economic Analysis ◽  
Production Technologies ◽  
The Cross ◽  
Functional Teams ◽  
Short Time

Aim. As part of a large-scale business transformation, Gazprom Neft is implementing new approaches to improving economic efficiency. One of such approaches is the launch of the “Renovation” project program, the purpose of which is to achieve maximum profitability of the basic well stock. The article describes the results of the study and formation of a set of measures to improve the economic efficiency of oil production at the fields of Gazpromneft-Khantos. Materials and methods. The key feature of “Renovation” is that the goal setting and the formation of key performance indicators of project teams are made not from the previously achieved result, but from the potential. To do this, a detailed technical and economic analysis of the factors affecting the profitability of oil production is first carried out, and the potential for increasing profitability is determined. After that, hypotheses are worked out to increase the economic efficiency of production and a set of measures is formed to realize the identified potential. The cross-functional teams of the “Renovation” program projects are formed around the core-team that includes specialists in geology, development, production, engineering, energy management, economics and IT. This allows teams to solve non-standard tasks in a short time, in a complex way, without attracting external leverage, which is an absolute competitive advantage. Results. The program of optimization measures developed by the cross-functional team of the Renovation project will provide the potential for the growth of the profitability of Gazpromneft-Khantos in the period from 2021 to 2030. Conclusions. The article presents the developed and implemented cases on reducing operating costs in various areas — geology and reservoir engineering, energy efficiency, oil production technologies, downhole operations and hydraulic fracturing, oilfield chemistry.

Eutrophication Assessment of a Large Scale Coastal Area Using GIS Technologies

2011 ◽  
Vol 219-220 ◽  
pp. 1073-1076
Author(s):  
Di Mu ◽  
Jian Hua Tao
Keyword(s):  
Coastal Area ◽  
Large Scale ◽  
Trophic State ◽  
Assessment Method ◽  
Assessment Process ◽  
Bohai Bay ◽  
Gis Technologies ◽  
Gis Techniques ◽  
Eutrophication Assessment ◽  
Fuzzy Assessment

The purpose of this work is to integrate GIS techniques into the eutrophication assessment process of a large scale coastal area – Bohai Bay. Specifically, based on ArcGIS8.3 Desktop, a geodatabase was built for the management of the field monitoring data of Bohai Bay. Using the existing functions of the GIS platform, NQI index and a fuzzy assessment method were adopted respectively for the assessment of the trophic state of this area. Both methods generated salient spatial variations in the assessment results which were often missed by other attempts and thus demonstrated the power of the GIS techniques. The specific trends of the results provide clues for further studies.

The Study of the Impact for Coastal Engineering on High Water Level Induced by Storm Surges in Bohai Bay

2011 ◽  
Vol 94-96 ◽  
pp. 810-814
Author(s):  
Jin Shan Zhang ◽  
Wei Sheng Zhang ◽  
Chen Cheng ◽  
Lin Yun Sun
Keyword(s):  
Water Level ◽  
Storm Surge ◽  
Large Scale ◽  
Storm Surges ◽  
High Water ◽  
Coastal Engineering ◽  
Cold Wave ◽  
Bohai Bay ◽  
Ocean Engineering ◽  
The Impact

Bohai Bay is an semi-closed bay, the storm surge disaster is very serious in past. Now more and more large ocean engineering are built here, To study changes of storm surge induced by the construction of large-scale coastal engineering in Bohai Bay in present, 2D numerical storm surge model is established with large - medium - small model nested approach. The three most typical storms surges: 9216, 9711 and by cold wave in October 2003 are simulated in the condition of before and after implementation of planning projects in Bohai Bay. Changes of storm surge water level due to implementation of artificial projects are analysis in this paper.

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