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Proceedings Papers

Paper presented at the SPE Western Regional Meeting, April 20–22, 2021
Paper Number: SPE-200840-MS
... from the adjacent area and accumulate, resulting in fine deposition and permeability reduction. Fine migration and accumulation are represented schematically and mathematically, as discussed below. Workflow Introduction When subjected to continued waterflooding, thief zones may be developed...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21176-MS
...Convolutional neural network model design Abstract The technique of interwell tracer testing is considered as one of the most effective method to identify the thief zone (TZ) in reservoirs. However, in heavy oil reservoirs, tracer breakthrough curves are mostly parabolic and unimodal, thus...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201395-MS
... Abstract After long-time water injection, thief zones (TZ) tend to form and reduce the effectiveness of water flooding in mature oil fields. Several profile control techniques have been developed to resolve this problem. The effect of profile control depends on quantitative calculation of pore...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 17–19, 2019
Paper Number: SPE-196627-MS
... Abstract Understanding the heterogeneity is critical for a successful water injection in a carbonate reservoir. Thief zone is one of the most obvious forms of heterogeneity, which indicates the thin layer with higher permeability compared to the average reservoir permeability. The existence...
Proceedings Papers

Paper presented at the SPE Oil and Gas India Conference and Exhibition, April 9–11, 2019
Paper Number: SPE-194571-MS
... than 96–98%, wells become uneconomic and are shut in or undergo water shut-off treatments. For this reason, shutting off water flow through thief zones in flooded reservoirs to prevent it from entering wells is one of the biggest technical challenges in enhancing oil recovery from mature multi...
Journal Articles
OIJ 2018 (01): 36–37.
Paper Number: OIJ-2018-01-036-037-RU
Published: 01 January 2018
...A. A. Zalyatdinov; L. B. Khuzina; G. S. Abdrakhmanov The PDF file of this paper is in Russian. All oil and gas fields that have been in production for a long time have one feature in common, that is, increasing number of wells in need of workover. Poor-quality isolation of thief formations while...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187397-MS
... Abstract Carbonate's extreme heterogeneity in the form of fracture corridors and super-permeability thief zones challenges the efficient sweep of oil in both secondary and tertiary recovery operations. In such reservoirs, conformance control is crucial to ensure injected water and any EOR...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187235-MS
... of the complexities is due to the presence of thin layers with abnormally high permeability, called thief-zones, which make reservoirs extremely heterogeneous and injection water breakthrough very early. Therefore, it is necessary to decipher the reservoir genesis and complicated architectures by genetic analysis...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 7–10, 2016
Paper Number: SPE-183491-MS
... responses. The integrated response of High Precision Temperature (HPT) and Spectral Noise Logging (SNL) indicated Unit C and Unit D were active as expected. Additionally, HPT-SNL combination identified a thief Zone (Unit B) in a non-perforated interval contributing to injection. Injected water was observed...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil & Gas Conference and Exhibition, October 25–27, 2016
Paper Number: SPE-182356-MS
...-recovery due to complicated reservoir architectures and elusive thief zones, the abnormal high-permeable strips that can cause water-injection breakthrough. Therefore, it is critical for the successful development of the Mishrif to make certain the different reservoir architectures and thief-zone...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 14–16, 2015
Paper Number: SPE-175669-MS
... is critical for a successful water injection in a carbonate reservoir. Thief zone is one of the most obvious forms of heterogeneity, which indicates the thin layer with higher permeability compared with average reservoir permeability. The existence of thief zone results in earlier water breakthrough...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170990-MS
Proceedings Papers

Paper presented at the SPE Energy Resources Conference, June 9–11, 2014
Paper Number: SPE-169931-MS
... for improving oil recovery in offshore field of Bohai area, but thief zones with high permeability could make the effect of polymer on oil production worse. To try to minimize the negative impact brought by thief zones, we apply asphalt particle to plug the high permeability regions to compel subsequent...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24152-MS
... of water was observed. In some cases, this was interpreted to have been exacerbated by the large-volume acid stimulations. Detection of the location of the thief zones is not straightforward in CAJ wells because of the restricted hydraulic communication through the CAJ holes. This work presents interwell...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2013
Paper Number: IPTC-16632-MS
... in Pre-Parigi formation. The operator has experienced massive loss problems while drilling the 8-1/2inch section. Unsuccessful sidetracking operations with conventional drilling technique has urged operator to look for alternative drilling methods to caseoff the massive thief zone. The drilling...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-155699-MS
... and the formation. Investigation results show that in fracture formation with good permeability or in other thief formation which has fracture- cavity, the leakage type is mostly differential pressure leakage and rarely fractured leakage. So when analyzing the safe drilling density window, differential pressure...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 15–17, 2011
Paper Number: IPTC-14974-MS
... sand Alberta thief zone SAGD process Simulation numerical simulation solvent mixture nonlinear hyperbolic constitutive model es-sagd process steam injection dilation constitutive model permeability Abstract Overlying top water and gas thief zones have a detrimental effect...
Proceedings Papers

Paper presented at the SPE Enhanced Oil Recovery Conference, July 19–20, 2011
Paper Number: SPE-143926-MS
... At present most of the oilfields in the eastern China have been into high water cut stage, and the widespread evolution of thief zones has become one of the most important and difficult problems during the development, which prevents the recovery efficiency from being further enhanced. Therefore...
Proceedings Papers

Paper presented at the Canadian Unconventional Resources and International Petroleum Conference, October 19–21, 2010
Paper Number: SPE-137435-MS
... Abstract Overlying top water and gas thief zones have a detrimental effect on the Steam-Assisted Gravity Drainage (SAGD) recovery process since steam penetrates into these zones which results in great heat loss. Due to the presence of these top thief zones, recovering bitumen by the SAGD...
Proceedings Papers

Paper presented at the SPE EUROPEC/EAGE Annual Conference and Exhibition, June 14–17, 2010
Paper Number: SPE-131055-MS
... carbonate oil reservoir, this paper investigated the evolution of injected water front and the level at which high permeability layers will act as a thief zone causing early water breakthrough. The paper determined the effect of different reservoir heterogeneity parameters on the behavior thief zones...

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