Halliburton Energy Services, Inc.

Saudi Arabian Oil Company

Mahmoud Eid Selim

Mustapha Berkane

Endurance Oziegbe Ighodalo

Ghulam Jeelani

Wael Soliman Elhawary

Colin Douglas Tisdale

John Andrew Quirein

Arthur Chuen Hon Cheng

A fluid sampling tool and method for fluid sampling in an ultra-tight or tight formation. The tool may include a packer assembly that includes one or more inflatable packers and one or more exhaust ports, a multi-chamber section that includes one or more sample chambers, and at least two storage sections that each contain a storage tank, wherein each storage tank holds a stimulation fluid. A method for performing a stimulation operation that includes disposing a fluid sampling tool into a well, moving the fluid sampling tool to a zone of interest, and isolating the zone of interest with a packer assembly on the fluid sampling tool. The method may further include performing a first pressure draw down and a first pressure build up, performing an injectivity test, and performing a sampling process.

Formation testing and sampling tool for stimulation of tight and ultra-tight formations

A method that includes obtaining log data of a downhole formation, and characterizing the downhole formation by determining stiffness coefficients including C, C, C, C, C, and C. Cis a function of C, C, C, and at least one of a kerogen volume and a clay volume derived from the log data. In another method or system, Cis derived based at least in part on Ccalculated as C=k[C+2(C&#x2212;C)]+kor Ccalculated as C=((C&#x2212;k)/k)&#x2212;2(C&#x2212;C), where kand kare predetermined constants. In another method or system, Cis derived in part from at least one of a kerogen volume derived from the log data, a clay volume derived from the log data, Ccalculated as C=k[C+2(C&#x2212;C)]+k, or Ccalculated as C=((C&#x2212;k)/k)&#x2212;2(C&#x2212;C), where kand kare predetermined constants.

Characterizing a downhole environment using stiffness coefficients

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Dhahran, Saudi Arabia

Mahmoud Eid Selim