Browsing by Subject "Acidizing"
Now showing items 1-15 of 15
-
(2012-07-16)Diversion in carbonates is more difficult than in sandstones because of the ability of acid to significantly increase the permeability in carbonates as it reacts in the pore spaces and flow channels of matrix. In-situ ...
-
(2020-07-21)In carbonate reservoirs, wells are typically stimulated by injecting acid into the formation. The injected acid reacts and dissolves the formation minerals, creating high-conductive flow paths, also known as wormholes. HCl ...
-
(2018-11-21)Acid jetting is a well stimulation method for carbonate reservoirs, with promising outcomes for the production enhancement in horizontal wells. It is a process where an acid solution is injected at a high rate via relatively ...
-
(2018-11-05)Viscosified acid systems have been used for acid diversion in heterogeneous carbonate reservoirs for several decades. However, the anionic polymers used in these systems are difficult to clean post treatment, leading to ...
-
(Texas A&M University, 2008-10-10)Emulsified acids have been extensively used in the oil industry since 1933. Most of the available research and publications discussed mainly the application of emulsified acid in the field. A fair number of the published ...
-
(2018-08-09)Acid jetting is a well stimulation method that occurs in limited entry liner completions. Fluid exiting on orifice experiences a significant pressure drop as a high velocity stream impinges against the wellbore wall. Two ...
-
(2012-02-14)Iron control during acidizing plays a key role in the success of matrix treatment. Ferric ion precipitates in the formation once the acid is spent and the pH exceeds 1-2. Precipitation of iron (III) within the formation ...
-
(2012-02-14)In live acid solutions at concentrations of HCl namely 15-20 wt% HCl, elastic modulus remained quite low as compared to 10-12 wt% HCl concentrations. At 10 wt% HCl concentration, elastic modulus was 3.4 Pa observed whereas ...
-
(2014-05-06)Most literature contains Hydrochloric acid (HCl) carbonate acidizing experiments performed on short (2 - 6 inch) cores. These cores do not accurately represent reservoir conditions, as spent acid is not propagated for any ...
-
(2015-12-18)Matrix acidizing has been used in oil and gas well stimulation for permeability and productivity enhancement purposes. HCl has been repeatedly used as a stand-alone stimulating fluid to decrease skin damage, create highly ...
-
(2017-07-28)The oil industry has been utilizing different acid systems, both organic and inorganic, to stimulate sandstone and carbonate reservoirs. Among these, hydrochloric acid (HCl) is the most commonly used acid because it is ...
-
(2015-04-28)Matrix acidizing is widely-used in the petroleum industry as a production enhancement technique. In order to design a successful acidizing job, it is important that all aspects of the reaction between the treating acid and ...
-
Reaction Rate of Methanesulfonic Acid (MSA) Solutions with Calcite Using a Rotating Disk Apparatus (2015-12-15)Methanesulfonic acid (MSA) has been proven as a scale remover and, more recently, as a stand-alone stimulation fluid in carbonate acidizing. MSA is a strong alkyl sulfonic acid having a pK value of -1.9, and it dissolves ...
-
(2013-02-26)Surfactant flooding in carbonate matrix acidizing treatment has been widely used for changing the wettability of the rock and to achieve low IFT values. Optimizing the type of surfactant and concentration for the specific ...
-
(2014-05-08)Acidizing is one of the most popular techniques for well productivity enhancement during oil and gas production. However, the treatment method is not very effective when the wellbore penetrates through multiple layers of ...