Using Cloud Based Well Engineering Data and Wellbore Integrity Analysis to Reduce Risk in Niger Delta Workovers

2019 ◽  
Author(s):  
K. P. Seymour ◽  
C. Stuart
Keyword(s):  
Niger Delta ◽  
Wellbore Integrity ◽  
Engineering Data ◽  
Reduce Risk ◽  
Integrity Analysis

Workflow For Wellbore Integrity Analysis During Reservoir Development

2013 ◽  
Author(s):  
Sergio Fontoura ◽  
Carlos Emmanuel Ribeiro Lautenschlager ◽  
Guilherme Lima Righetto ◽  
Nelson Inoue ◽  
Rafael Augusto do Couto Albuquerque ◽  
...  
Keyword(s):  
Wellbore Integrity ◽  
Reservoir Development ◽  
Integrity Analysis

Wellbore integrity analysis of a natural CO2 producer

2010 ◽  
Vol 4 (2) ◽  
pp. 186-197 ◽  
Author(s):  
Walter Crow ◽  
J. William Carey ◽  
Sarah Gasda ◽  
D. Brian Williams ◽  
Michael Celia
Keyword(s):  
Wellbore Integrity ◽  
Integrity Analysis

scholarly journals Wellbore integrity analysis of a natural CO2 producer

2009 ◽  
Vol 1 (1) ◽  
pp. 3561-3569 ◽  
Author(s):  
Walter Crow ◽  
D. Brian Williams ◽  
J. William Carey ◽  
Michael Celia ◽  
Sarah Gasda
Keyword(s):  
Wellbore Integrity ◽  
Integrity Analysis

Wellbore Strengthening in Narrow Margin Drilling

2016 ◽  
Author(s):  
Ogochukwu Benyeogor ◽  
Sunday Awe ◽  
Obinna Amah ◽  
Oseme Ugochukwu ◽  
Adeyemi Erinle ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Pore Pressure ◽  
Niger Delta ◽  
Wellbore Integrity ◽  
Power Stations ◽  
Energy Demands ◽  
Wellbore Strengthening ◽  
Fracture Gradient ◽  
Mud Loss

ABSTRACT Natural gas is one of the cleanest energy sources, its uses range from fueling power stations to cooking and heating. Global demand for natural gas is expected to rise in the coming years. Meeting these energy demands means drilling deeper exploration and development wells to access huge volumes of gas present under high pressure and high temperature (HPHT) conditions. Despite the attractiveness of the reward, managing the narrow drilling window between the reservoir pore pressure and the formation fracture gradient has remained a major source of cost escalation and non-productive time on HPHT projects. In order to improve the economics of HPHT projects, technologies like Managed Pressure Drilling and borehole strengthening have been used as a means of mitigating the risks associated with narrow margin drilling, thus enabling a paradigm shift from traditional casing seat selection methodology. In the Niger Delta, it is not uncommon to observe significant jumps in pore pressure values in proximate high pressure formations. The simplification of well designs and successful drilling operations are often challenged by the need to navigate through series of high pressured reservoirs in narrow margin windows. Compliance with process safety requirements requires selection of mud weight that is low enough to prevent mud loss and high enough to overbalance the reservoir pressure. Mud loss induced by formation fracture is often encountered in tight margin drilling, and when this happens, the focus shifts to strengthening the damaged wellbore using various techniques such as pumping chemical resins to seal off the loss zones. Various degrees of results have been achieved when borehole strengthening techniques are deployed with the objective of restoring wellbore integrity in both permeable and non-permeable formations. Successful deployments have resulted in achieving the well objectives safely and cost effectively. This paper details loss of wellbore integrity experienced on an HPHT well in the Niger delta and the wellbore strengthening strategy that was used to restore the strength in a non-permeable formation. It sheds light on how understanding the nature of the fracture, rock lithology as well as proper job execution can restore a damaged wellbore to its previous strengths. A Cost reduction approach to the execution of the strategy is also discussed.

Integrity Analysis of Gas Field Water Reinjection Well Wellbore

2011 ◽  
Vol 121-126 ◽  
pp. 2799-2803
Author(s):  
Chun Bi Xu ◽  
Jing Cheng Liu ◽  
Li Xu ◽  
Xue Mei Kuang ◽  
Jian Hua Wang
Keyword(s):  
Mathematical Model ◽  
Water Treatment ◽  
Fem Simulation ◽  
Gas Field ◽  
Wellbore Integrity ◽  
Theoretical Support ◽  
Simplifying Assumptions ◽  
The Right ◽  
Integrity Analysis ◽  
Safety Operation

Finding the right abandoned well (or new drilling ) leakage layer reinjection into the ground is the most effective, the most mature, the most commonly used method in the gas filed water treatment. By simplifying assumptions and the establishment of mathematical model and FEM, simulation and calculation of stress status of the tubing and casing, Analysis of wellbore integrity, for the analysis of the wellbore risk of gas field water reinjection wells and reinjection wells safety operation provide important theoretical support.

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