Schlumberger Technology Corporation

Saudi Arabian Oil Company

Timur Zharnikov

Alexander F Zazovsky

Fernando Garcia-Osuna

Steve G Villareal

Tao Chen

Masafumi Fukuhara

Vera Solovyeva

Maxim Orlov

A method for wellbore treatment. The method including preparing an encapsulated treatment agent via polymerization, feeding the encapsulated treatment agent into the wellbore, delivering the encapsulated treatment agent to a desired depth within a formation in the wellbore, activating an acoustic or an electromagnetic source at the desired depth within the formation, and generating an acoustic field or an electromagnetic field. The acoustic field or electromagnetic field activates the encapsulant thereby releasing the treatment agent into the wellbore and a desired depth.

Methods for targeted chemical treatment of well bores

The method of a mud cake thickness determination provides sending short high-frequency signals into a formation from at least two positions located at different distances from the mud cake and recording arrival times of reflected echo signals. The mud cake thickness is determined based on the time measured.

Method for a mud cake thickness determination

Methods and apparatus to control a formation testing operation based on a mudcake leakage are disclosed. A disclosed example method for use with a downhole tool disposed in a wellbore comprises measuring a property of a mudcake layer at a first location in a wellbore, determining a value representative of an estimated leakage through the mudcake layer based on the property, and determining, based on the value, whether to continue a formation testing operation.

Methods and apparatus to control a formation testing operation based on a mudcake leakage

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Moscow, Russia

Timur Zharnikov