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Matrix acidizing

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Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-20006-MS
... A. & Malallah A.H. , "An empirical model for predicting crude sludging potential caused by acidizing" , International Journal of petroleum Science and Technology, Vol. 1 , No. 1 , pp. 23 - 36 , 2007 . The main objective from carbonate matrix acidizing design is to enhance the wormhole network...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 13–15, 2015
Paper Number: SPE-173751-MS
... Abstract The success of matrix acidizing treatments, whether in carbonate or sandstone formations, depends significantly on the selected acid or acid mixtures. Limitations are applied on all existing acidizing fluids including hydrochloric acid and organic acids. These limitations include: low...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Chemistry, February 18–21, 1997
Paper Number: SPE-37282-MS
... Abstract A new type of geochemical model, CIRF.A, is used to analyze matrix acidizing procedures. The model considers the transport of pore-fluid solutes and the chemical reactions, which are either kinetic or equilibrium controlled. One of its new, distinct features is that it can predict...
Journal Articles
SPE Prod & Oper 36 (04): 795–806.
Paper Number: SPE-205397-PA
Published: 10 November 2021
...Mohamed Elsafih; Mashhad Fahes Summary It is common to inject acidic stimulation fluids into oil-bearing carbonate formations to enhance well productivity. This process of matrix acidizing is designed to maximize the propagation of wormholes into the formation by optimizing the injection parameters...
Journal Articles
SPE Prod & Oper 36 (04): 780–794.
Paper Number: SPE-203411-PA
Published: 10 November 2021
... performance of matrix stimulation operations. By applying this method, optimum volume of acid and diverter, diversion effectiveness, SR, and an estimation of post-acid surface drawdown can be obtained from the simple surface treating data. The secondary-produced data could lead to a better understanding...
Journal Articles
Journal: SPE Journal
SPE J. 26 (05): 2570–2599.
Paper Number: SPE-205012-PA
Published: 13 October 2021
...Cunqi Jia; Kamy Sepehrnoori; Zhaoqin Huang; Jun Yao Summary Matrix acidizing is a common technique for carbonate reservoir stimulation. In this work, a new two-scale continuum model is developed to study the 2D acidizing process. The Navier-Stokes-Darcy equation is used instead of the Darcy’s-law...
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-206133-MS
... stimulation methodologies to address the challenges associated with matrix stimulation in Mishrif. Mishrif Stimulation Challenges Ineffective acidizing treatments across tight carbonate openhole intervals usually have in common a nonoptimal coverage of the stimulation fluids along the uncased section...
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-205893-MS
...Abstract Abstract Matrix acidizing with fluoroboric acid (HBF 4 ) has gained special attention as not only it provides deeper penetration of in – situ generated hydrofluoric acid, but also stabilizes formation fines by binding them to the pore surface. While numerous mathematical models exist...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1059
... ABSTRACT: Matrix acidizing is widely used to stimulate carbonate reservoirs with low permeability. The two-scale continuum model is mainly employed to simulate the large-scale continuous dissolution of solid matrix by the acid solution due to the high model accuracy and low calculation expense...
Journal Articles
SPE Drill & Compl 36 (02): 281–299.
Paper Number: SPE-178034-PA
Published: 16 June 2021
... was to pump a matrix acidizing treatment. The oil-based drilling mud filter cake was removed using Microemulsion 2 treatment seen in this work. Completion fluids were displaced from the wellbore prior to pumping the filter-cake removal stage. Fig. A-1 H 2 S generation setup used in testing...
Proceedings Papers

Paper presented at the SPE International Oilfield Corrosion Conference and Exhibition, June 16–17, 2021
Paper Number: SPE-205032-MS
... Abstract This paper describes a staged acid corrosion inhibition concept for application in matrix acidizing treatments. The approach optimizes the performance of acid corrosion inhibitor (ACI) formulations used to protect coiled tubing (CT) and downhole casing during acid injection...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, May 25–27, 2021
Paper Number: SPE-202083-MS
... Abstract This work presents a matrix acidizing formulation which comprises a salt of monochloroacetic acid giving a delayed acidification and a chelating agent to prevent precipitation of a calcium salt. Results of dissolution capacity, core flood test and corrosion inhibition are presented...
Journal Articles
Journal: SPE Journal
SPE J. 26 (02): 653–666.
Paper Number: SPE-205343-PA
Published: 14 April 2021
... total page equation april 2021 Carbonate matrix acidizing as a well-known stimulation technique is still challenging to design and optimize. Its optimization requires accurate simulation of the process, which includes a complex reactive flow in porous media (carbonate matrix dissolution...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21336-MS
... for matrix acidizing in hot, acid-sensitive sandstone reservoirs. It also provides a detailed engineering workflow for candidate selection, treatment design, and job execution and evaluation, which can easily be adapted to regions facing similar challenges. core analysis upstream oil & gas acid...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-202658-MS
... with electrical wires, optical fibers, and, in the last year, hybrid wire-optical fiber tubes. In this paper, a new telemetry system consisting of multiple single-point sensors in the bottom hole assembly (BHA) and CT-conveyed electrical wire is reported to help optimize matrix acidizing stimulation in real time...
Proceedings Papers

Paper presented at the SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, October 29–31, 2019
Paper Number: SPE-196376-MS
.... Matrix stimulation has been proven to remove the fines blocking the pore throat. The desired solution has been carefully selected to have prolonged well production. Organic clay acid is chosen for to its ability to have deeper penetration and to create a thin coating on the pore surface to prevent fines...
Proceedings Papers

Paper presented at the SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition, October 29–31, 2019
Paper Number: SPE-196341-MS
... & soaked for 4 hours. The pickling fluid must be fully recovered at surface prior proceed with next step of injectivity test. For matrix acidizing, injectivity test is a compulsory step to verify the formation's ability to receive fluid and to ensure fluid distribution of treatment can fully cover all...
Journal Articles
Journal: SPE Journal
SPE J. 25 (05): 2296–2318.
Paper Number: SPE-199236-PA
Published: 15 October 2020
...Mateus Palharini Schwalbert; Murtada Saleh Aljawad; Alfred Daniel Hill; Ding Zhu Summary Most wells in carbonate reservoirs are stimulated. Because of their low cost and simpler operations, acid‐stimulation methods are usually preferred if they are sufficient. Matrix acidizing can effectively...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1294
... ABSTRACT Matrix acidizing is applied to oil and gas reservoirs to remove or bypass near-wellbore damage resulting in an increase in the formation permeability yielding higher production rates. Effects of matrix acidizing injection pressure on the rock properties including porosity, permeability...
Journal Articles
Journal: SPE Journal
SPE J. 25 (03): 1272–1284.
Paper Number: SPE-200472-PA
Published: 11 June 2020
...Mahmoud T. Ali; Hisham A. Nasr-El-Din Summary The design process of carbonate matrix acidizing treatments requires coring and conducting linear, radial coreflood experiments. With the current environment revolving around cutting costs, it has become increasingly important to accurately design cost...

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