Infill Drilling Enhances Oil Recovery in Egypt's First Waterflood Field

1987 ◽  
Author(s):  
M.L. Mahmoud
Keyword(s):  
Oil Recovery ◽  
Infill Drilling

scholarly journals A predictive model of enhanced oil recovery by infill drilling and its application

2007 ◽  
Vol 4 (3) ◽  
pp. 47-50
Author(s):  
Jianhong Xu ◽  
Linsong Cheng ◽  
Lili Ma
Keyword(s):  
Predictive Model ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Infill Drilling

TIRRAWARRA AND MOORARI ENHANCED OIL RECOVERY PROJECTS—‘GETTING MORE OIL OUT FROM DOWN UNDER’

1986 ◽  
Vol 26 (1) ◽  
pp. 389
Author(s):  
D.J. Brown ◽  
M.R. Barley
Keyword(s):  
Oil Recovery ◽  
Rock Permeability ◽  
Full Development ◽  
Stock Tank ◽  
Productivity Decline ◽  
Infill Drilling ◽  
Gas Flooding ◽  
Incremental Oil Recovery ◽  
Cooper Basin ◽  
Early Injection

The Tirrawarra and Moorari oilfields are located in the South Australian portion of the Cooper Basin. Production to date in the fields has been maintained primarily by infill drilling, with individual wells showing substantial declines in productivity. In the absence of an active aquifer, some form of pressure maintenance was required to arrest this productivity decline and increase recovery. The miscibility characteristics of the reservoir oil, the low rock permeability, and the availability of miscible injection gases made miscible gas flooding the preferred improved recovery process.In 1984 pilot gas injection floods were initiated in both the Tirrawarra and Moorari fields to test the effectiveness of pressure maintenance and the miscible process in the Tirrawarra Sandstone. Injection was initiated using the Tirrawarra Field non-associated Patchawarra Formation separator gas to defer the high facility costs associated with alternative injection gases.The results of the pilot injection programs have been most promising. Production has improved in most offset producing wells with no sign of early injection gas breakthrough. In 1986, expansion of the Tirrawarra pilot will complete development of a major portion of the Tirrawarra Field on inverted seven spot injection patterns. Ultimate development of the field for full scale injection may involve infill drilling and well conversions resulting in skewed five spot patterns. Three alternative injection gases are being considered: Patchawarra separator gas, carbon dioxide, and ethane, each of which show favourable miscibility characteristics with the Tirrawarra oil. The incremental oil recovery expected from the full development is 23 million stock tank barrels oil.

Through-Tubing Infill Drilling Increases Oil Recovery

1999 ◽  
Vol 51 (02) ◽  
pp. 62-62
Author(s):  
Dennis Denney
Keyword(s):  
Oil Recovery ◽  
Infill Drilling

scholarly journals Infill drilling and well placement assessment for a multi-layered heterogeneous reservoir

2021 ◽  
Author(s):  
Fahad I. Syed ◽  
Shahin Negahban ◽  
Amirmasoud K. Dahaghi
Keyword(s):  
Oil Recovery ◽  
Horizontal Wells ◽  
Assessment Process ◽  
Well Placement ◽  
Subject Field ◽  
Sector Model ◽  
Reservoir Simulations ◽  
Heterogeneous Reservoir ◽  
Carbonate Formation ◽  
Infill Drilling

AbstractThis paper presents an assessment of infill drilling opportunities in a complex multi-layered heterogeneous carbonate formation located in Abu Dhabi offshore. The subject field was developed last century and is currently undergoing further development with line drive horizontal wells. The field is being redeveloped for improved oil recovery at higher production rates with long horizontal wells. An infill assessment process is defined using sector model reservoir simulations for the specific reservoir. Reservoir simulations are performed on pattern sector models to establish the optimum grid for infill evaluation. Also, the models with an appropriate grid size are used to optimize infill placement (vertical and lateral well placement) and infill drilling timing for a couple of geologically similar areas. In the second step, the sector model results are applied to test the full-field infill development plan. The relatively homogeneous geological area shows very uniform displacement with 1-km spaced wells and gives no considerable benefit of incremental recovery through infill drilling. However, in a comparatively heterogeneous geological area, considerable incremental oil recovery is quantified. In brief, this paper presents a detailed infill drilling and well placement assessment process workflow for the re-development of a multi-layered heterogeneous reservoir.

Water Injection Operation Readiness of BB Field Redevelopment

2021 ◽  
Author(s):  
Sriyanta Hadi ◽  
M Junaida Hoodi ◽  
Sing Tat Ting ◽  
Setia Dana ◽  
Sabestiano Mike Atet
Keyword(s):  
Best Practices ◽  
Oil Recovery ◽  
Produced Water ◽  
New Technology ◽  
Water Injection ◽  
Working Environment ◽  
Central Processing ◽  
Infill Drilling ◽  
Integrated Project ◽  
B1 Field

Abstract BB field complex redevelopment is an integrated development under PETRONAS Enhanced Oil Recovery (EOR) project. BB fields are producing fields operated by PETRONAS Carigali Sendirian Berhad (PCSB). The BB fields redevelopment is a project to redevelop both B1 and B2 fields and to enable EOR implementation in the B1 field. The B1 redevelopment includes the EOR implementation through immiscible water alternating gas (IWAG), infill drilling, and safeguarding of no further activity (NFA) production. The B1 redevelopment also incorporates some provisions for the B2 field to secure gas supply for B1 IWAG. The B2 redevelopment focuses on safeguarding B2 NFA production. The redevelopment consists of three main elements, 1) EOR IWAG that involves injector well drilling at a new IWAG injection wellhead platform, 2) infill drilling at existing platforms and 3) safeguarding of NFA. Surface facilities scope includes installing a new Central Processing Platform (CPP) for B1 field, wellhead platforms, and intra-field pipelines. The CPP includes 60 kbpd water injection plant capacity, gas compression, gas-liquid separation, and produced water treatment. Modification in the B2 field is to flow gas from the B2 field to the B1 field. Operational readiness is crucial to ensure that the integrated project is executed smoothly. Two cases for changes are new technology deployment for water injection module (WIM) and people capability. It is a big challenge to achieve an effective start-up with minimum delay. There are some important aspects considered includes operation philosophy, Health Safety and Environment (HSE), and collaborative working environment (CWE) implementation. It is important to ensure improving oil recovery through infill and IWAG. Best practices in operation readiness of an integrated project that have many challenges that include process, people, and technology. These best practices may be replicated in any other projects by other companies/operators.

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