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Acid fracture

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Proceedings Papers

Paper presented at the SPE International Hydraulic Fracturing Technology Conference and Exhibition, October 16–18, 2018
Paper Number: SPE-191423-18IHFT-MS
... Abstract The performance of acid fractured wells depends on the conductivity distribution along the acid penetration length, which is a function of reservoir properties, treatment design and execution. The previously published models for fractured well performance assume constant fracture...
Proceedings Papers

Paper presented at the OTC Brasil, October 4–6, 2011
Paper Number: OTC-22337-MS
... Abstract The classical theoretical framework of fracture conductivity for rough acid-etched surfaces is the Nierode and Kruk correlation, given by an exponential equation of two parts: the conductivity under zero closure stress and the rate of conductivity change with closure stress. The first...
Proceedings Papers

Paper presented at the Offshore Technology Conference-Asia, March 25–28, 2014
Paper Number: OTC-24895-MS
... Predicating the conductivity of acid fracture is not possible using analytical or numerical models due to stochastic nature of acid reaction with rock and complex leak-off behavior of acid. Other alternatives are either empirical correlations or conducting experiments mimicking field treatments...
Proceedings Papers

Paper presented at the SPE International Symposium and Exhibition on Formation Damage Control, February 10–12, 2010
Paper Number: SPE-128070-MS
... Abstract While experimental studies have shown acid type significantly influences resulting fracture conductivity, there has been limited work on how fluid properties relate to etched fracture faces and hence the resulting conductivity. The effects of acid solutions injected into hydraulic...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-122333-MS
... Abstract Acid fracturing is a stimulation process in which the dissolution of formation rock leaves unevenly etched fracture faces that creates lasting conductivity after fracture closure. The success of acid fracturing depends on the conductivity created and retained under overburden stress...
Journal Articles
SPE Prod & Oper 28 (01): 46–54.
Paper Number: SPE-136217-PA
Published: 25 February 2013
...M.. Pournik; L.. Li; B.. Smith; H.A.. A. Nasr-El-Din Summary In acid fracturing, while the near-wellbore area of the fracture receives live, unspent acid, sections of the fracture farther down the length receive partially spent acid because of the acid's reaction with the rock. As a result...
Proceedings Papers

Paper presented at the SPE Russian Oil and Gas Conference and Exhibition, October 26–28, 2010
Paper Number: SPE-136217-MS
... Abstract In acid fracturing, while the near wellbore area of the fracture receives fresh, unspent acid, sections of the fracture further down the length receive partially spent acid due to reaction of acid. As a result, there is a distribution of acid concentration along the fracture length...
Journal Articles
Journal: SPE Journal
SPE J. 15 (02): 404–416.
Paper Number: SPE-119619-PA
Published: 17 December 2009
...Jianye Mou; D.. Zhu; A.D.. D. Hill Summary In the acid-fracturing process, the fracture conductivity created by acid etching of the fracture walls is because of the surface roughness created by the acid's nonuniform dissolution of the fracture surfaces. The acid-fracture conductivity is dependent...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194780-MS
..., the cell pressure is maintained at 7 MPa to keep the CO 2 byproduct in the solution. After acid etching, fracture surfaces were scanned once again. The variations of fracture surface topography and weight of each piece were recorded. Figure 4 Acid etching apparatus. Finally, rock samples...
Proceedings Papers

Paper presented at the SPE Hydraulic Fracturing Technology Conference, January 19–21, 2009
Paper Number: SPE-119619-MS
... Reservoir Characterization fracture characterization correlation strength hydraulic fracturing Fluid Dynamics complex reservoir Simulation flow in porous media fracture conductivity fracture surface Standard Deviation acid fracture model permeability distribution correlation length...
Proceedings Papers

Paper presented at the European Formation Damage Conference, May 30–June 1, 2007
Paper Number: SPE-107772-MS
..., TX 75083-3836, U.S.A., fax 01-972-952-9435. Abstract Acid fracturing is a stimulation process in which lasting conductivity after fracture closure is created by uneven etching of the fracture face. The success of an acid fracturing treatment depends on the conductivity created being retained under...
Proceedings Papers

Paper presented at the International Oil & Gas Conference and Exhibition in China, December 5–7, 2006
Paper Number: SPE-104446-MS
... Abstract This paper will present the development novel temperature control viscosity acid (TCA) technique that uses for acid fracturing in Ordovician formation in TZ region of TARIM, China. The Ordovician formation in TZ field is extreme heterogeneous carbonate with naturally fractures...
Journal Articles
J Pet Technol 56 (03): 59–60.
Paper Number: SPE-0304-0059-JPT
Published: 01 March 2004
...Karen Bybee This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 84925, "Field Application of HCl-Formic Acid System to Acid Fracture Deep Gas Wells Completed With Super Cr-13 Tubing in Saudi Arabia," by H.A. Nasr-El-Din, SPE, S.M. Driweesh, SPE...
Proceedings Papers

Paper presented at the SPE International Improved Oil Recovery Conference in Asia Pacific, October 20–21, 2003
Paper Number: SPE-84925-MS
... materials and corrosion magnesium acid acidizing concentration driweesh corrosion management flowline corrosion iron concentration gelled acid hydraulic fracturing production chemistry spe 84925 riser corrosion flowback sample oilfield chemistry pipeline corrosion corrosion...
Proceedings Papers

Paper presented at the 8th European Formation Damage Conference, May 27–29, 2009
Paper Number: SPE-121827-MS
... Abstract TARIM is the largest basin abundant in carbonate reservoirs in China. Acid fracturing is the main technology for exploration and development in TARIM carbonate reservoirs, which featured with great depth (4500–7200m), high temperature (250–320F Degrees) and extreme heterogeneity due...
Journal Articles
SPE Prod & Oper 23 (03): 343–352.
Paper Number: SPE-102167-PA
Published: 01 August 2008
...Camilo Malagon Nieto; Maysam Pournik; Alfred D. Hill Summary In an acid-fracturing treatment, fracture conductivity is created by differential etching of the fracture surface by the acid; without nonuniform dissolution along the fracture face, the fracture will close after pumping ceases...
Proceedings Papers

Paper presented at the SPE Hydraulic Fracturing Technology Conference, January 29–31, 2007
Paper Number: SPE-106272-MS
... Abstract The effects of acid solutions injected into hydraulic fractures created in carbonate formations can be assessed at the laboratory scale in acid fracture conductivity tests that mimic the conditions in an actual acid fracture treatment. We conducted a series of acid fracture...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–27, 2006
Paper Number: SPE-102167-MS
... Abstract In an acid fracturing treatment, fracture conductivity is created by differential etching of the fracture surface by the acid - without non-uniform dissolution along the fracture face, the fracture will close after pumping ceases, and little lasting conductivity is created. In spite...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Europec featured at 82nd EAGE Conference and Exhibition, October 18–21, 2021
Paper Number: SPE-205143-MS
...Abstract Abstract Modeling of acid fracturing process is challenging because of the coupled complex effects of flow through porous media and fractures, chemical reaction in a geostatistical base, wormhole propagation, and reservoir heterogeneity. To avoid the complexity, decoupled approaches...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1326
... Abstract Currently, acid etching and conductivity experiments mostly use smooth rock samples to simulate the formation of acid fractures. There are few reports on the influence of fracture rough morphology on acid etching behavior and conductivity. In this paper, digital carving technology...

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