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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
... The main objective from carbonate matrix acidizing design is to enhance the wormhole network and to avoid any induced damage caused by treatment fluid and pre flush/post flush fluids. Optimization of treatment fluid recipe aims to avoid potential source of damage such as sludge, emulsion...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 13–15, 2015
Paper Number: SPE-173751-MS
... Studies 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...
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...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210167-MS
... Abstract Matrix acidizing can effectively stimulate carbonate reservoirs, often resulting in skin factors on the order of –3 to –4. Wormholes can effectively connect the well with the reservoir. However, if the carbonate reservoir is naturally fractured, it will be difficult to generate...
Proceedings Papers

Paper presented at the SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition, June 6–9, 2022
Paper Number: SPE-209673-MS
... Abstract With uncertain global economic conditions and calls for lowering carbon footprint, optimizing carbonate matrix acidizing along with other operations is crucial for operators and services companies. Accurate modeling of wormhole growth is inevitable to optimize acid placement...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 15–18, 2021
Paper Number: SPE-208116-MS
... , Abubaker , Shaheen , Saud , . " Design Transformation of Hydraulically Powered Coiled Tubing Tractors for Matrix Acidizing Stimulations in Extended Reach Carbonate Reservoirs ." Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference , Abu Dhabi, UAE , November 2017...
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
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
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

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206133-MS
... by dissolving the rock matrix around the damage or create conductive channels such as wormholes to enhance the connectivity between the wellbore and the reservoir. Hydrochloric acid (HCl) is the most common formation-dissolving agent. It reacts with carbonate minerals to yield soluble calcium and magnesium...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205893-MS
... Matrix acidizing is a commonly applied well stimulation technique for improving the flow of hydrocarbons into the well bore. In sandstone reservoirs, it is used for mitigation of formation damage arising due to plugging of pore throats by clays and fines. Mud acid formulation consisting...
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
...Tariq Almubarak; Mohammed AlKhaldi; Jun Hong Ng; Hisham A. Nasr-El-Din Summary Hydrochloric and organic acids have been extensively used to enhance well productivity or injectivity in tight carbonate formations (10 to 50 md). The use of these acids, however, can cause instances of complete...
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
... The objective of this paper is to show that SMCA can be used as a matrix acidizing fluid with delayed acidification properties. First, different chelating agents are tested that can suppress formation of reaction product calcium glycolate. Corrosion tests are performed with different commercially...
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
...-1S, 10 bbls of pickling fluid been spotted near wellbore area & 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...

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