Schlumberger Technology Corporation

Pierre Ramondenc

Mark Callister Oettli

Charles Kearney

Jordi Juan Segura Dominguez

Pavel Evgenievich Spesivtsev

Azwan Hadi Keong

Laurence Fossati

Scott Alexander Douglas Bulloch

Philippe Michel Jacques Tardy

Nestor Jesus Molero Garcia

Iyad Hamed Naji

A sour production fluid mitigation system may be at an entry point below an injection sub for a coiled tubing system, pumping an inhibited fluid through pressure control equipment for the coiled tubing system to an exit point. A sour production fluid mitigation system may use a choke guide below the exit point and above a wellhead, maintaining an inhibited fluid pressure at the exit point greater than or equal to a production fluid pressure at a production tree of the wellhead.

Well production management in sour environment at a surface equipment zone

Systems and methods presented herein facilitate coiled tubing operations, and generally relate to automatically improving performance of coiled tubing operations in substantially real time by inferring reservoir pressure based on initial coiled tubing run conditions. For example, a method includes performing a coiled tubing operation via a coiled tubing system at least partially disposed within a wellbore. The method also includes detecting data relating to operating parameters of the coiled tubing operation via sensors of the coiled tubing system during the coiled tubing operation. The method further includes determining an initial wellbore fluid distribution in the wellbore based on the detected data prior to pumping fluid into the wellbore from a surface location relative to the wellbore. In addition, the method includes inferring a reservoir pressure of a hydrocarbon-bearing reservoir through which the wellbore extends based on the initial wellbore fluid distribution in the wellbore.

Systems and methods for inferring reservoir pressure based on initial coiled tubing run conditions

A technique facilitates controlled creation of pressure waves in a downhole environment. The technique enables creation of, for example, dynamic underbalance (DUB) pressure waves or dynamic overbalance (DOB) pressure waves which can be used to perform desired activities downhole. According to an embodiment, a pump is coupled with a pressure chamber and conveyed downhole into a borehole to a desired location. The pump may be operated downhole to change a pressure level in the pressure chamber until a sufficient pressure differential exists between an interior and an exterior of the pressure chamber. A release mechanism in communication with the pressure chamber is then rapidly opened to establish the desired pressure wave as the differing pressures equalize.

System and method for creating pressure waves in a well

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Clamart, France

Pierre Ramondenc