Development and Field Use of a Novel Solvent Water Emulsion for the Removal of Asphaltene Deposits in Fractured Carbonate Formations

2006 ◽  
Author(s):  
Stephen Charles Lightford ◽  
Enzo Pitoni ◽  
Luca Mauri ◽  
Franco Armesi
Keyword(s):  
Water Emulsion ◽  
Solvent Water ◽  
Fractured Carbonate ◽  
Carbonate Formations

Improved Oil Recovery With Chemicals in Fractured Carbonate Formations

2009 ◽  
Author(s):  
Rene Tabary ◽  
Antoine Fornari ◽  
Brigitte Bazin ◽  
Bernard Jean Bourbiaux ◽  
Christine S.H. Dalmazzone
Keyword(s):  
Oil Recovery ◽  
Improved Oil Recovery ◽  
Fractured Carbonate ◽  
Carbonate Formations

Engineered Approach to Isolate Intervals Invaded by Water or Gas in Naturally Fractured Carbonate Formations

2014 ◽  
Author(s):  
J. Lopez ◽  
A. Marti­nez Ballesteros ◽  
R. Miranda ◽  
C. Garcia ◽  
C. Deolarte ◽  
...  
Keyword(s):  
Naturally Fractured ◽  
Fractured Carbonate ◽  
Carbonate Formations

Development and Successful Field Trial of Retrievable, Instrumented & Tandem Downhole Isolation Valve RIT-DIV System

2021 ◽  
Author(s):  
Diana Amangeldiyeva ◽  
Aida Askarovna Aliyeva ◽  
Yerlan Amanbayev ◽  
Julmar Shaun Sadicon Toralde ◽  
Timothy Peter Higginson ◽  
...  
Keyword(s):  
Single Phase ◽  
Drilling Fluid ◽  
Carbonate Reservoir ◽  
Design And Technology ◽  
Fractured Carbonate ◽  
Open Hole ◽  
Field Deployment ◽  
Carbon Dioxide Co2 ◽  
Isolation Device ◽  
Carbonate Formations

Abstract This paper describes the development and field deployment of a new downhole isolation valve system called the Retrievable, Instrumented & Tandem Downhole Deployment Valve (RIT-DDV). The purpose of this technology is to provide a temporary mechanical barrier to isolate and monitor the well during drilling operations in an environment where a full column of single-phase fluid cannot be maintained. The RIT-DDV is based on predominantly used downhole isolation valve (DIV) design and technology, which is a hydraulic flapper-type isolation device installed in the casing that seals the open hole during pipe tripping operations. The key features of the new RIT-DDV systems are dual flapper valves with three downhole pressure and temperature gauges to take measurements above, between, and below the flappers. The advantage of this configuration is that it enhances safety by enabling double-block-and-bleed system functionality, providing valve redundancy, and moreover allowing for continuous real-time monitoring of downhole well conditions. In addition, the RIT-DDV is designed to be reusable and can be tested upon installation and replaced if necessary. The RIT-DDV system enabled the operator to isolate and monitor the well while drilling through a depleted formation that prevented drilling with a full column of single-phase drilling fluid. The RIT-DDV was successfully trialed in western Kazakhstan and demonstrated the potential of this technology to enhance the safety of drilling heavily fractured carbonate formations with reservoir fluids containing hydrogen sulfide (H2S) / carbon dioxide (CO2) that are prone to total loss of circulation. The downhole pressure / temperature monitoring capabilities that the system provides within the casing string helped drill through the depleted fractured carbonate reservoir section without incurring non-productive time (NPT).

scholarly journals Characterization of an organic-solvent-tolerantBrevibacillus agristrain 13 able to stabilize solvent/water emulsion

2009 ◽  
Vol 297 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Ajiraporn Kongpol ◽  
Thunyarat Pongtharangkul ◽  
Junichi Kato ◽  
Kohsuke Honda ◽  
Hisao Ohtake ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Water Emulsion ◽  
Solvent Water
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