The 2018-19 Dallas Chapter Officers:

PresidentMriganko Sarkar (Pioneer Natural Resources), Mriganko.Sarkar@pxd.com

VP/TechnologySteve Brakeen (Primexx Corp.), Steve.Brakeen@Primexx.com

Secretary, open position due to transfer

TreasurerRay Wydrinski (Pioneer Natural Resources), Ray.Wydrinski@pxd.com

Publicity & Promotion, Jim Lewis (GCC, Great Crew Change), jlewis1@gmail.com

Next Monthly Chapter Meeting:   December 13, 2018,  2rd Thursday

 The Dallas chapter will continue to meet in the DeGolyer & MacNaughton sponsored business conference room located in the Providence Towers building at  5001 Spring Valley Road in North Dallas. Located north of LBJ (I-635), south of Belt Line Road, and on the west side of the North Dallas Tollway, this building has the large open archway in its middle and has a red granite facade. The meeting room is located on the 1st floor of the East Tower. Parking is underground ($1) and can be accessed from either Spring Valley Road or from the southbound service road of the tollway. 

Please RSVP early in order that enough food is ordered and that the chapter does not order too much!! 

Meetings start at 11:30 for a social gathering, followed by a catered buffet at noon (cost $20, students $10).

Please contact Dallas SPWLA (mailto:dallasspwla@yahoo.com?subject=RSVP) to receive future meeting notifications by email and for making luncheon reservations (RSVP).


(…They are not Twins, but definitely – Brothers!)

presented by

Pavel E Syngaevsky (Senior Petrophysicist Advisor,  Noble Energy)


Porosity measurements in unconventional rocks are complicated by a very small and variable pore sizes, strong interaction of water with clay minerals, mixed mineralogy (hence variable matrix), mixed wettability and adsorbed hydrocarbons. The pore structure has a significant impact on understanding of formation fluids volumes and deliverability. Due to complex internal structure and presence of nano-pores it is difficult to characterize it with traditional nitrogen sorption/condensation and/or mercury porosimetry. NMR offers a non-destructive, lithology-independent (to a certain degree), and relatively fast solution; utilizing of T1 and T2 measurements.

Carbonate Mudstones, Cherts and Organic Matter-Pyrite-Siderite rich Black Shales exhibit single- or dual-porosity structure, revealing presence of mico- and nano-pores (0.5-0.1 μm & <0.1 μm). Larger isometric and elongated pores are associated with carbonate/quartz matrix and clay minerals, and smaller, isometric – with kerogen. Preliminary observations correlating favorably with available high-resolution SEM-FIB, XRD and Rock-Eval analysis were utilized to describe pore morphology and characterize mineral volumes.

Advanced petrophysical characterization of six different carbonate mudstones reveals similarities in their structure. Evaluation of Eagle Ford, Niobrara, Utica, Duvernay, Muskwa and Nordegg formations shows that despite their differences all present very similar challenges which may have similar petrophysical solutions. Geological ages of plays reviewed are from Mid Ordovician to Lower Jurassic; areal extends – from East Texas (Maverick Basin) to Canada (Alberta Basin).

All formations are characterized by complex/mixed mineralogy with variable organic matter “contamination” in dispersed and laminated forms; mixed wettability making resistivity-based techniques questionable; multi-porosity systems including fractures, micro and nano-pores. Analysis of clays and TOC volumes, porosity, pore structure and saturation were performed utilizing available conventional core measurements, wireline quad-combo, dipole and NMR logs. Formations have similar petrophysical characterizations: set of four general litho-facies, mineralogy and porosity calculations, water saturation estimate and potential seismic applications for exploration..

Speaker Biography:

Pavel E Syngaevsky is a Senior Petrophysicist Advisor with Noble Energy, currently working in the Geoscience Technology Team with focus in Unconventional resource plays appraisal and development. Pavel was with Noble for eight years, and was working as Senior Petrophysicist for Newfield and Sperry Sun prior to that. He has over 18 years of domestic US and international experience in the geoscience, including offshore and onshore projects in China, Kazakhstan, Indonesia and Mexico.

Pavel received a M.Sc. in Mining Engineering/Petrophysics in 1987; and Ph.D in Petrophysics in 1994 at Academy of Oil and Gas, Moscow, Russia. He also had a post-doctoral fellowship in Reservoir Engineering in 2000, at Louisiana State University. Pavel is a proud oilman in the third generation.

Meeting Location

Dallas , TX, United States

32° 46' 48.504" N, 96° 48' 1.6236" W

See map: Google Maps

Texas US