King Fahd University of Petroleum and Minerals

Saudi Arabian Oil Company

Mumtaz Ahmad Quraishi

Ime Bassey Obot

Kashif Rahmani Ansari

Dheeraj Singh Chauhan

Tao Chen

Qiwei Wang

Ahmad A Sorour

Mohammed Abdullah Bataweel

Mohammed Abudullah Bataweel

Bader Ghazi Al-Harbi

Norah Abdullah Aljeaban

Benedict Ikenna Onyeachu

A composition for inhibiting corrosion in gas wells includes a pyrazolopyridine derivative. The pyrazolopyridine derivative includes a pyridyl moiety, a first pyrazole moiety, a second pyrazole moiety, and a phenyl moiety. The first pyrazole moiety is bound to the pyridyl moiety. The second pyrazole moiety is bound to the pyridyl moiety. The phenyl moiety is bound to the pyridyl moiety. The composition can be flowed into a wellbore formed in a subterranean formation, thereby inhibiting corrosion in the wellbore.

Inhibiting corrosion in gas wells

A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well is provided. According to the method the oil and gas well is treated with an acidic treatment fluid which is an oil-in-water emulsion containing 10 to 28 wt. % of an acid, from 10 to 30 vol. % of a solvent selected from the group consisting of dimethyl formamide, dimethyl acetamide, acetone, methyl ethyl ketone, phenol, cresol, and benzyl alcohol; and 0.001 to 0.045 wt. % of a corrosion inhibitor of formula I:

Method for anti-corrosion treating an oil well with an oil in water emulsion

A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well is provided. The method includes treating the oil and gas well with an acidic treatment fluid containing an acid, a corrosion inhibitor of formula I, wherein Rto Rare hydrogen, and a secondary corrosion inhibitor of formula (II) wherein Rto Rare independently hydrogen, an alkyl, an aryl, or an alkoxy, The treatment fluid is substantially free of an intensifier, a surfactant, an organic solvent and a dimeric reaction product obtained by a double condensation reaction between thiocarbohydrazide (HN&#x2014;NH&#x2014;C(S)&#x2014;NH&#x2014;NH) and two cinnamaldehyde compounds.

Corrosion protection method for wellbore piping

A composition for inhibiting corrosion in hydrocarbon wells includes a pyranopyrazole derivative. The pyranopyrazole derivative includes a pyrazole moiety, a dihydropyran moiety, and a phenyl moiety. The dihydropyran moiety is bound to the pyrazole moiety. The phenyl moiety is bound to the dihydropyran moiety. The composition can be flowed into a wellbore formed in a subterranean formation, thereby inhibiting corrosion in the wellbore.

A method of inhibiting corrosion of metal surfaces of piping, tubing, heat exchangers and other metal equipment during acid stimulation of an oil and gas well is provided. The method includes introduction of an acidic treatment fluid containing an inorganic acid and a corrosion inhibitor of formula I into the oil and gas well.

Methods of inhibiting corrosion of metals from acid stimulation of an oil and gas well

Heterocyclic compounds having fused pyrimidine moieties with electron-donating groups. A method of preparing the heterocyclic compounds via a multicomponent condensation reaction is specified. These compounds are effective against corrosion of metallic substrates in acidic (i.e. CO), and high salinity environments commonly found in oil and gas industry.

Growing community of inventors

Dhahran, Saudi Arabia

Mumtaz Ahmad Quraishi