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Conducting the acidizing procedure

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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191556-MS
... limestone core samples and a small number of reservoir core samples from the Unit 2 formation of Kazakhstan's Tengiz field to understand the impact of different acid fluid systems and procedural steps on acid fracture conductivity. The physical structure of the etched channels is observed to be impacted...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, January 26–28, 2016
Paper Number: SPE-178210-MS
... association of drilling contractors cement formulation Upstream Oil & Gas acid treatment Cement System acidizing conductive path acid exposure time procedure acid stimulation study differential pressure reaction special cement-based pill acid exposure test procedure cylindrical sample...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205838-MS
.... acetic acid enhancing matrix acid stimulation procedure penetration radiation ct scan number ultra-sound wave interaction upstream oil & gas acid formulation matrix acidizing petroleum engineer core analysis acid interaction experiment core plug Introduction Matrix stimulation...
Proceedings Papers

Paper presented at the SPE Europec featured at 78th EAGE Conference and Exhibition, May 30–June 2, 2016
Paper Number: SPE-180114-MS
... Abstract Acid fracturing is one of the methods for well stimulation in carbonate formations. Compared to propped hydraulic fracturing, acid fracturing takes a simpler procedure, and therefore, usually with a lower cost. On the other hand, fracture conductivity is more difficult to maintain...
Proceedings Papers

Paper presented at the Technical Meeting / Petroleum Conference of The South Saskatchewan Section, October 17–20, 1999
Paper Number: PETSOC-99-92
... of surfactants, it is not necessary to have oil in the system. This observation was supported by dual-core diversion tests conducted in the presence of oil. Similarly, there is no need to use acid during the screening process. The proposed screening method can be applied in both foam acidization as well...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-19724-Abstract
... in representative rock samples and provide recommendations for implementing the preferred stimulation strategy. Experiment apparatus, procedures and conditions A laboratory testing procedure was developed to measure the acid fracture conductivity with different stimulation fluids and under increasing effective...
Proceedings Papers

Paper presented at the SPE Hydraulic Fracturing Technology Conference and Exhibition, February 5–7, 2019
Paper Number: SPE-194377-MS
... for testing (left) and an assembled conductivity cell ready for testing (right). Figure 1 Rock sample and conductivity cell for conductivity tests. The schematic of the acid injection experimental apparatus is shown in Figure 2 . The high pressure pump allows for a maximum injection rate...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1326
..., volume, L time,min 65 mm 1 A 1.084 mL/min 40 2 55 3 B 1.129 Gelling 370 1 14.8 40 4 acid 30 5 270 40 C 1.166 370 470 370 2.3. Experimental setup and procedures distribution, and the curves of acid fracture conductivity The acid fracture conductivity test system in Southwest against closure stress...
Proceedings Papers

Paper presented at the SPE Hydraulic Fracturing Technology Conference, January 29–31, 2007
Paper Number: SPE-106371-MS
... fracturing fracture conductivity acid procedure reaction treatment design carbonate fracture stimulation sandstone application closure pressure wellbore carbonate formation Upstream Oil & Gas History Oil Well conductivity proppant society of petroleum engineers Copyright 2007...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, January 29–31, 2018
Paper Number: SPE-189353-MS
... treatment, a wide-scale field development strategy was planned, and many wells were drilled, completed, and fractured similarly in Bahrah field. drilling operation FPP Directional Drilling acid system hydraulic fracturing breakdown acid procedure Injection Rate multistage acid international...
Proceedings Papers

Paper presented at the European Formation Damage Conference, May 30–June 1, 2007
Paper Number: SPE-107772-MS
... to understand the effect that they have on acid fracture conductivity. The rock embedment strength measurements were done before the acid etching procedure at multiple points (28 measurements) on the etched surfaces of the core samples with the procedure published before9 with a slightly different steel ball...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1394
..., and the stress envelope is shown in Fig. 2. Fig. 2. Triaxial compression test stress envelope (carbonate reservoir cores with 2080m depth) 2.2. Experimental apparatus and procedure Before starting acid-etched fracture conductivity tests, carbonate cores will be cut into rectangular blocks with the dimension...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206363-MS
..., 2018 and Abdrazakov et al, 2018 ). One technique used to compare reaction rate is done by conducting a coreflow study to measure Pore Volume to Break Through (PV BT ). A reduced reaction rate acid system typically results in a lower PV BT number, or longer penetration length, if a fixed volume...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194780-MS
... Figure 2 3D laser scanner. Figure 3 Rock sample preparation procedure. After rock sample preparation procedure, dynamic acid etching tests were conducted ( Fig. 4 ), varying the acid flow rate and acid-rock contact time. Adding the back pressure regulator to the outlet...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference & Exhibition, June 5–7, 2013
Paper Number: SPE-165191-MS
... monitored. Non-acid based (i.e., xanthan-based polymer gel) and acid-based carrier fluids (i.e., polyacrylamide-based polymer) were prepared according to the procedure described in the previous section. The appropriate proportional amount of polymer particulates and legume particulates were added...
Proceedings Papers

Paper presented at the SPE European Formation Damage Conference, May 13–14, 2003
Paper Number: SPE-82218-MS
...) to citric acid was 1:1. These experiments were conducted using the same procedure used to conduct the calcium carbonate experiments. Autoclave Bulk Solution Experiments. A 2-liter Parr reactor was preheated to 100°C. One liter of encapsulated citric acid slurry was added to the reactor. Encapsulated acid...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 15–17, 2011
Paper Number: IPTC-15214-MS
... of both mass and heat transfer between the wellbore and the formation. The model accounts for all significant thermal processes involved during a treatment, including heat of reaction, conduction, convection. Then, an inversion procedure is applied to interpret the acid distribution profile from...
Proceedings Papers

Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, April 24–27, 2017
Paper Number: SPE-187971-MS
... and fluid load recovery. Strip oil and sludge layers from acid-soluble materials. Prevent emulsions from forming and breaking existing emulsions. Assist in preventing or removing water blocks ( Kokal, et al. 2003 , Nasr-El-Din et al. 2005 ). The treatment procedure of organic/inorganic...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-121928-MS
... by a fracture-acidizing simulator. In this procedure, the weight loss per unit area predicted for the proposed treatment is correlated back through the laboratory measurements to predict conductivity. The procedure assumes that the conductivity is a strong function of weight loss, and only a weak function...
Proceedings Papers

Paper presented at the SPE Symposium: Production Enhancement and Cost Optimisation, November 7–8, 2017
Paper Number: SPE-189217-MS
... It is difficult to model acid fracturing stimulation because many different processes are involved and need to be simulated simultaneously. This includes modeling of fracture propagation, modeling of acid transport and reaction, and modeling of conductivity decline under closure stress. Each...

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