A New Strategy of Well Pattern Design and Adjustment to Enhance Production of Vertical Multiple Reservoirs

2012 ◽  
Author(s):  
Zifei Fan ◽  
Xuanyu Yang ◽  
Xia Xue ◽  
An Zhu Xu ◽  
Ling He ◽  
...  
Keyword(s):  
Pattern Design ◽  
Well Pattern ◽  
New Strategy

Ultralow Permeability Reservoir Stress Field Simulation

2013 ◽  
Vol 816-817 ◽  
pp. 728-733
Author(s):  
Guang Feng Liu ◽  
Yang Lu ◽  
Ling Lu ◽  
Jun Tao Wang
Keyword(s):  
Stress Field ◽  
Simulation Method ◽  
In Situ Stress ◽  
Calculation Model ◽  
Element Analysis ◽  
Pattern Design ◽  
The Maximum Principle ◽  
Inversion Principle ◽  
Well Pattern ◽  
Ultralow Permeability

The simulation method of reservoir tectonic and present stress field was recommended, and in-situ stress distribution of C82 ultralow permeability reservoir formation in Changqing oilfied Z19 well block was computed. The method is based on finite element analysis, of which the contents and procedures include geological model establishment, calculation model establishment and results analysis. The simulation precision depends on the reliability of models. Inversion criteria need to be set to determine whether the ultimate simulating result is reasonable. Main inversion criteria include absolute inversion, principle stress criteria, deformation criteria, etc. The maximum principle stress value of C82 formation in Z19 well block is between 35.7 and 45.2MPa, whose direction is NE 72o-80o, and the dominant direction is NE 75o. The differential stress value is between 0.4 and 9.8MPa. The relationship between stress, reservoir parameters and production data was discussed. The simulation results can be taken as reference for well pattern design, optimization and overall fracturing design.

Generative Well Pattern Design Applied to a Giant Mature Field Leads to the Identification of Major Drilling Expenditure Reduction Opportunity

2020 ◽  
Author(s):  
Maddalen Lepphaille ◽  
Arthur Thenon ◽  
Pierre Bergey ◽  
Baptiste Salley ◽  
Abdelaziz Ben Sadok ◽  
...  
Keyword(s):  
Pattern Design ◽  
Well Pattern ◽  
Mature Field ◽  
Expenditure Reduction

scholarly journals Well pattern design and optimal deployment for coalbed methane development

2016 ◽  
Vol 43 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Xin ZHAO ◽  
Bo JIANG ◽  
Qiang XU ◽  
Jiegang LIU ◽  
Yue ZHAO ◽  
...  
Keyword(s):  
Coalbed Methane ◽  
Pattern Design ◽  
Well Pattern ◽  
Optimal Deployment

Generative Well-Pattern Design Presents Opportunities To Reduce Drilling Expenditures

2021 ◽  
Vol 73 (09) ◽  
pp. 48-49
Author(s):  
Chris Carpenter
Keyword(s):  
Design Space ◽  
Traditional Approach ◽  
Middle Eastern ◽  
Water Injection ◽  
Development Planning ◽  
Oil Field ◽  
Work Flow ◽  
Abu Dhabi ◽  
Pattern Design ◽  
Well Pattern

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 203152, “Generative Well-Pattern Design Applied to a Giant Mature Field Leads to the Identification of Major Drilling Expenditure Reduction Opportunities,” by Maddalen Lepphaille, Total; Arthur Thenon, Modis; and Pierre Bergey, Total, et al., prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually 9–12 November. The paper has not been peer reviewed. A generative well-pattern-design (GWPD) work flow was benchmarked against traditional manual designs to leverage three reservoir-development planning opportunities applicable to a giant mature Middle Eastern carbonate field. People remained central in ensuring efficient problem setup and exploration guidance, but the work flow proved able to identify substantially better patterns than the traditional approach for each of the opportunities at the cost of only a few hundred simulations. GWPD Overview The work flow used to tackle the different problems of this study, which the authors call the GWPD “well-improvement scheme” (WISH), consists of the following steps. Each step is detailed in the complete paper. 1. Definition of design space 2. Constraint of design space 3. Qualification of design space 4. Nondominated sorting (a specific ranking of all of the cells of the con-strained design space according to the value of their quality indicators) 5. Candidate design investigation 6. Investigation of preferred designs 7. Optimization of preferred design GWPD Application Context. The application study was con-ducted at the beginning of the industrialization of WISH, a proprietary software tool dedicated to GWPD. The authors call the work flow GWPD-WISH. In the studied oil field, more than 400 oil producers and water- or gas-injector strings have been drilled from approximately 100 platforms in a series of reservoirs. The study focused upon two specific reservoirs holding most of the field reserves. These reservoirs are developed with peripheral water injection and gas injection into the gas cap. According to the latest development plan, hundreds of wells will be drilled during the next 40 years in order to maintain a production plateau. The context was deemed favorable because a 3D gridded dynamic reservoir model was available, the geology and development history defined a large and complex design problem, and large liquid hydrocarbon reserves were thought to remain. While the software and method used enables considering an ensemble of realizations capturing reservoir uncertainties, only a single history-matched realization of the model was available. Consequently, the study did not deal with reservoir uncertainties.

Optimum Design of Coalbed Methane Reservoir Development Strategies through Numerical Simulation

2011 ◽  
Vol 402 ◽  
pp. 854-859
Author(s):  
Jin Shi ◽  
Xiao Dong Wu ◽  
Yong Sheng An ◽  
Li Peng Wang ◽  
Yu Yuan
Keyword(s):  
Numerical Simulation ◽  
Optimum Design ◽  
Coalbed Methane ◽  
Development Strategies ◽  
Simulation Software ◽  
Shanxi Province ◽  
Gas Field ◽  
Pattern Design ◽  
Well Pattern ◽  
Coalbed Methane Reservoir

The research on the development strategies of conventional gas field is quite mature both in and abroad, but less attention has been paid on development strategies of coalbed methane reservoirs. This paper elaborates the remarkable dissimilarities of development strategies between coalbed and conventional gas, including commingled development design, reasonable dewatering rate and well pattern design. Eventually, Liulin area, in Hedong coal field located in Shanxi Province, China, was taken as an example to conduct optimum design of development strategies by numerical simulation software. All the aspects mentioned above can provide guidance to China’s CBM development.

A new strategy for prenatal diagnosis in a sporadic haemophilia B family

Haemophilia ◽  
2001 ◽  
Vol 7 (4) ◽  
pp. 416-418 ◽  
Author(s):  
M. Acquila ◽  
F. Bottini ◽  
A. Valetto ◽  
D. Caprino ◽  
P. G. Mori ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Haemophilia B ◽  
New Strategy

Guidelines Bring New Strategy in Low-Risk AF

2012 ◽  
Vol 45 (15) ◽  
pp. 12-13
Author(s):  
BRUCE JANCIN
Keyword(s):  
Low Risk ◽  
New Strategy
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