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Keywords: acid
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Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223416-MS
... in the filter cake which was calcium carbonate causing the removal of the filter cake to be successful. Besides that, the ability of the chelating agents to provide low corrosion potential made chelating agent as a great alternative for live mineral acids. This provided less aquatic toxicity, more human...
Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223386-MS
... in the fracturing treatment to guarantee successful flowback of the fracturing fluids. When depleted wells are stimulated with traditional acid fracturing fluids, nitrogen lifting is required to allow for flowback. Incorporating nitrogen into the treatment itself eliminates the need for this resulting in time...
Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223395-MS
... with longitudinal fracture and stimulated with multiple transverse fractures. The injectivity index was calculated for each scenario based on a model which was calibrated with injection history match. Both proppant and acid fracturing scenarios were modeled and described in detail within the study showcasing...
Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223439-MS
... tools. Finally, these results were analyzed to come up with the optimal stimulation fluids for use in particular geological conditions. The most common fluid systems are gelled HCl acid, emulsified acid systems, different variations of viscoelastic surfactant-based systems, nitrogen and carbon dioxide...
Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223394-MS
... Abstract Acid fracturing is a widely accepted technique to enhance production for carbonate reservoirs. This has been considered suitable for Tengiz Unit 2 reservoir development, which is characterized by tight matrix quality and low level of natural fracturing. Given the recent initiation...
Proceedings Papers

Paper presented at the SPE Caspian Technical Conference and Exhibition, November 26–28, 2024
Paper Number: SPE-223462-MS
... Abstract Uranium is crucial to the nuclear fuel industry, with Kazakhstan providing about 45% of the global supply, mainly through in-situ leaching (ISL) mining methods. ISL involves injecting a leaching agent to dissolve uranium oxides, which are then extracted as a solution. Optimizing acid...
Proceedings Papers

Paper presented at the SPE Annual Caspian Technical Conference, October 21–22, 2020
Paper Number: SPE-202521-MS
... test separator, chokes, lines). Collect downhole samples. Modelling work. Acid, solvent, fresh water diagnostic soaks. Perform PTA ( Bukharbayeva et al., 2019 ). Further investigate deterioration mechanism and start working on preventative program for a long term. Organic deposits (asphaltenes...
Proceedings Papers

Paper presented at the SPE Annual Caspian Technical Conference and Exhibition, October 31–November 2, 2018
Paper Number: SPE-192570-MS
... Abstract The execution of pinpointed multi-stage acid fracturing inside 4-1/8-in. slim horizontal open hole sections is discussed. For the first time in Kuwait, pinpoint stimulation of 16 frac stages across a total 4,666 ft open hole while commingling three reservoir sections in very low...
Proceedings Papers

Paper presented at the SPE Annual Caspian Technical Conference and Exhibition, November 12–14, 2014
Paper Number: SPE-172340-MS
...) completions, to selective and non-selective multilateral wells, and most recently to extended horizontal wells. Acid stimulation, both matrix and fracturing, are the common method to improve well productivity in this highly heterogeneous formation. Multi-stage acid fracturing was identified as a potential...

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