LGS and SWLGS BBQ Ice Breaker

September 14th, 2016

When: Thursday September 22, 2016

Where: Vermillionville (Next to Beaver Park)

Tickets ($20) available from:

Lafayette GRC– 233-8197 201 Heymann Blvd.

Mack Energy Co – 988-9260 3861 Amb. Caffery Pkwy.

Stone Energy – 237-0410 625 E Kaliste Saloom Rd,

Acadian Log Library – 233-1430 117 Heymann Blvd.

ULL Geology Dept. – 482-6647 Hamilton Hall
For additional Locations or information call John Hollier @ 781-8615

—————————————————————— Sponsors Needed and Available

Platinum: $1000, Gold $500 – $999, Sliver: $250-$499, Bronze: $100 – $249 Bar Sponsor: $Available

*Sponsors will be recognized at the barbeque, on the LGS website and in the LGS bulletin. Your Sponsorship is greatly appreciated!!!

TECHNICAL MEETING AND LUNCHEON: Tuesday, September 13, 2016

August 30th, 2016

Where: Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members

** Bring your 2016-2017 Member Dues!!!**

Luncheon Talks:

True Depth Processing

By: Thomas Charlton

TruDepth is Geotrace’s (Stein et al 2013, Hellman et al 2015) new workflow incorporating anisotropic technology that harnesses the power of Kirchhoff prestack depth migration (KPSDM) and true depthing into one single tool. This methodology derives and then uses the anisotropic parameters δ & ε using prior information including wells, tops and VSP’s to produce depth corrected seismic volumes that are not just structurally accurate but they match the geological tops coming from the wells.

Case histories with examples will be presented.

True depth achieved using anisotropic depth migration (2013), J. A. Stein, K. Hellman, S. Boyer and T. Charlton, First Break 31, 10.

Single Pass Multilayer Determination of Anisotropic Velocity Models with Well Constraints (2015), K. J. Hellman, J. A. Stein, T. H. Charlton and S.T. Boyer, 77th EAGE Conference

 

Speaker Bio:                                          

                                                               Thomas Charlton 
Present Position:                  General Manager Land Processing
Education/Qualifications:   University of Calgary & University of Iowa
Experience:                           Joined Geotrace in 2010 with 21 years industry experience

 

Tom processes both 2D and 3D datasets, specializing in structured land surveys with noise and static issues.  Since 1994 he has supervised processing groups in Nigeria, Mexico and Canada. He has been responsible for all aspects of data processing including designing AVO compliant run streams for both land and marine surveys.  He has considerable experience in dealing with data from Europe, Africa, and the Americas as well as in reflection/refraction statics computations and pre-stack/post-stack time migration processes.  Tom is a member of both the CSEG and the SEG.

TECHNICAL MEETING AND LUNCHEON: Tuesday, May 10, 2016

May 7th, 2016

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

 Detailed Velocity Model Building with Full Waveform Inversion

An accurate earth model is key to any successful depth imaging effort. Full-waveform inversion (FWI) is an advanced velocity model building process that uses the full two-way wave equation. Traditional methods use a ray-tracing approach to distribute velocity errors within the model.

The industry has moved to using two-way wave-equation migrations commonly known as reverse time migration (RTM), especially in areas of complex geology such as the salt bodies in the Gulf of Mexico, offshore West Africa, Brazil, and the Red Sea. The velocity model, including velocity anisotropy, is key to any depth migration effort. The natural next step is to use the two-way wave equation for velocity model building too. One of the most advanced tools for velocity model building using the two-way wave equation is full-waveform inversion. Full-waveform inversion uses computer-intensive forward modeling of the seismic measurement combined with residual wavefield back propagation to iterate to a final velocity model, which can provide greater detail than tomographic ray-tracing approaches.

FWI has recently emerged as one of the most exciting new techniques in the seismic industry thanks to its potential to deliver very detailed velocity models. It is also a paradigm shift in a way we process seismic data since it allows us to start the velocity model building phase on raw shots, with little need for pre- processing steps.

Most of the examples shown in literature are based on FWI applications where the starting velocity models for the inversion are derived by several iterations of traveltime tomography and are kinematically accurate. The reason for this is that FWI relies on solving a highly non-linear inverse problem using a gradient based technique; therefore it is very sensitive to the presence of local minima. These occur when the data predicted by the starting model differ in arrival time by more than half a cycle with respect to the real data.

Comparison between migrations using FWI velocities derived in this way and migrations using the starting tomographic models often yield disappointingly small differences, even though the FWI velocities appear to contain a lot more “geological” detail. Analysis of Common Image Point (CIP) gathers shows traveltime tomography is usually doing a good job at recovering long wavelengths of the velocity model which account for the bulk of the gather flattening required for a good image. There are particular settings where tomography struggles and where FWI can instead provide an accurate solution. We include two different examples below where we see FWI as a real game changer:

Denes_Vigh_FWI_abstract

Denes_Vigh_bio.pdf

TECHNICAL MEETING AND LUNCHEON: Tuesday, April 11, 2016

April 11th, 2016

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

A Case History of Andrews Field, Louisiana

By:

Steve Anderson

Abstract:

The Andrew Field area is a puzzle, wrapped in an enigma, surrounded by mystery. The area is six miles west of Maurice Louisiana and the major Upper Frio biostratigraphic zones are Camerina, Miogypsinoides, and Cibicides hazzardi (Marg. tex.). The Andrew area is an Upper Frio Slope Sandstone according to GRI. The area was initially drilled deep by Arco and Amerada, the wells had massive Cib. haz. (Marg tex) sand wet and the offsets had no sand. Based on 2D data, it was interpreted to be very complex stratrigraphically. My opinion is the area is complexly faulted with the no sand wells faulted out. The first production in Andrew was in the Marginulina howei sands. A deep well, the Amerada Hunter No 1 had shows in the Camerina 1 and 2 sands, pay in the Miogypsinoides, Marg. tex., and apparent pay in the Marg howei. So our friends at Amerada completed the well in the Marg. tex. with what looks to be sixty feet of pay. The well only produced 0.2 BCF, the well was re-completed to the Miogypsinoides which produced a measly .03 BCF. By this time the lease block fell into the hands of Jack Barry and Bob Hargrave, an independent geologist and landman, who brought a Camerina deal to Quintana. QPC drilled three productive wells which would cum. about 30 BCF from the Camerina 1 and 2 sands.

 

In 1993, the Quintana Camerina production was sold to Burlington. The best well was the Quintana Annie Mae Simon which was completed in the Camerina 1 sand as this sand’s unit covered more area. The Camerina 2 sand was to be produced later with a selective completion and plugged off. After the Simon well produced for 20 years, it was reasoned that a new well should be drilled rather trying to go back down the hole. The Burlington Annie Mae Simone 2 blew out and was plugged in July 2005. The drilling in this area is hampered by the pore pressure and frac gradient being very close so when increasing mud weight, the hole starts taking mud. Then the mud weight is decreased, the well tends to flow. Burlington sold the reserves to Walter Oil and Gas. Walter drilled the Annie Mae Simon No 1 in August 2005.

 

In 1998, Fairfield Resources shot a speculative 3D. Several prospects were identified but with the changing economics, Fairfield dropped out. The Reef Lucy Thomas 1 was drilled and productive in the Camerina 2 which appears to have an amplitude anomaly associated with production. The Lucy Thomas No 1 was drilled with the 3D data. The production in the Camerina 2, in the Walter Annie Mae Simon No 1 is also associated with an amplitude anomaly.

 

Arb lines from the 3D will be shown, to explain the progression of drilling and production. The Andrew area has big reserve potential in the deeper section which can be tapped once the current 3D is reprocessed and merged to image the deep Cib. haz (Marg. tex.) section.

 

Steve Anderson Bio:

 

Biography of Steven S. Anderson

 

Steve moved to Lafayette in July, 1975 when the bars did not close and Judge Roy Bean’s was the best pick up place in the South. It was rumored even geologists could pick up girls there. His first company was Union Oil of California. Coming off the training program, work was to interpret “spec” 2D data for Gulf of Mexico area wide lease sales as an exploration geophysicist. Steve worked W.C. Block 536 in which Union-Texaco bid $106 million for a 5000 acre tract. In 1981 Steve left Union Oil, to join Ada Exco, a small dysfunctional independent concentrating on onshore Louisiana. After one year, Steve joined Quintana Petroleum. During the “bust years” of 1985-1989, Quintana was one of South Louisiana’s most active drilling companies. Quintana took outside deals as well as internally generated prospects. Quintana made discoveries in Andrew, Wright, West Lake Arthur, Maurice, Orange Grove, Lyons Point and Bayou Sauveur. Steve joined Flores and Rucks in 1992, as a consultant and Exploration Manager from 1994-1996. After leaving Flores and Rucks, he has worked as a consultant with Rozel, Petroquest, Petsec, Mandalay, and many other small companies in Lafayette. He has had discoveries in Riceville, Andrew, Cossenade and is currently working in Section 28 Field with five productive wells with Termo and Penta Resources. He has recently consulting for DEEP, a Houston start-up company.

 

Steve is a 1975 graduate of Colorado School of Mines in geophysical engineering. He was a professional engineer in Colorado. He attended USL (now ULL) and completed all the course work for a masters in geology.

 

TECHNICAL MEETING AND LUNCHEON: Tuesday, March 8, 2016

February 25th, 2016

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Technology and Innovation are the Engines that Create Exploration Opportunities: Examples from the Deep Water Gulf of Mexico

By:

Barney Issen

Ben Carsey Distinguished Lecturer & AAPG/SEG Inter-Society Distinguished Lecturer

Abstract:

The deep water Gulf of Mexico play is a classic textbook example of an opportunity that simply would not exist without constant technical innovation. Variations of this talk have been used to explain our industry to people without any science background; for this Distinguished Lecture series it has been modified to be more suitable for earth scientist audience that is perhaps more familiar with the production environment than with “big-E” Exploration.

The deep water Gulf of Mexico play is a classic textbook example of an opportunity that simply would not exist without constant technical innovation. Variations of this talk have been used to explain our industry to people without any science background; for this Distinguished Lecture series it has been modified to be more suitable for earth scientist audience that is perhaps more familiar with the production environment than with “big-E” Exploration.

 

 

Bio:

Barney’s academic work at the University of Arizona emphasized hard-rock (mineral) geophysics, planetary science, and tectonophysics, so he entered the oil industry with few preconceptions beyond the Wave Equation. In 3+ decades with Chevron, he has witnessed and helped to nurture the emergence of 3D seismic data, depth imaging (first post-stack, then pre-stack), earth modeling, and visualization. Barney actually does play a geophysicist on TV, appearing in the Chevron “We Agree” ad campaign, as well as representing Chevron (and, by extension, our industry) in interviews with NBC Today, ABC 20/20, PBS Nightly Business Report, CNN, Fox News, NPR All Things Considered, NY Times, Wall Street Journal, Financial Times, Houston Chronicle, Contra Costa Times, Newsweek, Forbes, Wired, and MIT Technology Review.

TECHNICAL MEETING AND LUNCHEON: Tuesday, February 16, 2016

February 12th, 2016

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Soil-type estimation beneath a coastal protection levee, using resistivity and shear wave velocity.

By: Juan M. Lorenzo

Abstract:

Unconsolidated Holocene deltaic sediments comprise levee foundation soils in New Orleans, USA. Whereas geotechnical tests at point locations are indispensable for evaluating soil stability, the highly variable sedimentary facies of the Mississippi delta create difficulties to predict soil conditions between test locations. Combined electrical resistivity and seismic shear wave studies, calibrated to geotechnical data, may provide an efficient methodology to predict soil types between geotechnical sites at shallow depths (0- 10 m).
The London Avenue Canal levee flank of New Orleans, which failed in the aftermath of Hurricane Katrina, 2005, presents a suitable site in which to pioneer these geophysical relationships. Preliminary cross-plots show electrically resistive, high-shear-wave velocity areas interpreted as low-permeability, resistive silt. In brackish coastal environments, low-resistivity and low-shear-wave-velocity areas may indicate both saturated, unconsolidated sands and low-rigidity clays.

Author Bio:

Juan M. Lorenzo graduated as a geologist from the University of Barcelona in 1983.  The following year he came to the US as a Fulbright student and concentrated on Marine Seismology for his Ph.D. (1991) dissertation at Columbia University.  Since then he has participated in 7 marine geophysical and drilling cruises and led two land-based seismic experiments in central and northern Chile: in 2001, 2007-8.
Currently he uses land- and laboratory-based seismic experiments to research physics models for unsaturated soils (New Orleans levees), the dynamics of shallow faulting (Gulf Coast of Mexico), and microearthquake source mechanics of crack-fault interactions.

TECHNICAL MEETING AND LUNCHEON: Tuesday, January 12, 2016

January 6th, 2016

 

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Development and distribution of Salt Keels in the Deepwater Northern Gulf of Mexico

By Carl Fiduk

The development and distribution of salt keels projecting below the base of allochthonous salt as observed on modern 3-D seismic data in the deep Northern Gulf of Mexico is not random. Although keels may form by several different processes, a suite of keels which form due to extension of sub canopy sediments on a detachment within Oligocene-to-Eocene strata have a unique profile and distinct location. Regional mapping of the base of the salt canopy reveals that keels of this type are found parallel to, but offset shelfward (updip) from the present day Sigsbee Escarpment. This relationship holds across all of Keathley Canyon OCS area and into the Alaminos Canyon OCS area. Keels formed by other processes do not show this unique pattern.

The distanced between keel structures and the Sigsbee Escarpment varies from 10-30 km. The keel structure itself is not a single discrete feature but a series of linked shorter keels. Linkage style between keels appears similar to that for growth faults (relays). The location for detachment initiation and the orientation of individual keels can change markedly between salt lobes comprising the allochthonous canopy. The location for detachment initiation is often found in close relationship with deeper salt structures. Sparse well data indicate that the timing for displacement, which occurred after emplacement of the shallow canopy, is Plio-Pleistocene and therefore geologically quite recent. I speculate that the location where displacement initiates is structurally controlled and has relationships to deeper salt features and flexure points caused by updip crustal loading.

Author Bio:

Dr. Joseph Carl Fiduk

 

Carl Fiduk graduated with a B.S. (1979) and an M.S. (1982) in Geology, both from the University of Florida. He later received his M.B.A (1985) degree from the University of Texas of the Permian Basin and his Ph. D. in Geology and Geophysics from the University of Texas in Austin (1994). He has worked for the USGS, Gulf Oil, Discovery Logging, the Texas Bureau of Economic Geology, British Petroleum, Texas A&M University, the University of Colorado, CGG, CGGVeritas, WesternGeco/Schlumberger and as a private consultant. His research interests cover sedimentology, coastal and shelf clastic deposition, salt structural deformation and evolution, basin analysis, shelf margin to deep marine depositional processes, petroleum systems analysis, and the use of three-dimensional time and depth data in petroleum exploration. He is currently involved salt-sediment interaction research in the Flinders Ranges, South Australia, fluvial deltaic deposition in the Cretaceous Seaway of NW Colorado, and deep marine stratigraphic analysis in the Gulf of Mexico. Carl is presently Senior Geophysicist for Freeport McMoran O&G working in Houston, TX. In 30+ years as a working geoscientist he has published over 80 peer-reviewed abstracts and papers.

Carl Fiduk picture

Student and Professional Meet and Greet

January 6th, 2016

LGS Pizza Party

Student and Professional

Meet and Greet

5:30-8:30pm

Deano’s on Bertrand

Free to all current LGS members

See Flyer below:

 

LGS Pizza Party_2016

TECHNICAL MEETING AND LUNCHEON: Tuesday, December 8, 2015

December 3rd, 2015

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Light Hydrocarbon Geochemical Changes during Migration through Overburden

Abstract:

Fluid compositions evolve during migration through geologic media. While there have been previous studies documenting fluid compositional changes between reservoirs and the surface, understanding alteration is difficult with limited sampling separated by kilometers of geologic media. Lab experiments, numerical simulations, and core studies have concluded that a wide range of processes influence light hydrocarbon and CO2 compositions (sorption, diffusion, oxidation, mixing, and solubility effects). Yet, identifying these processes in the field remains elusive without extensive geologic characterization and fluid sampling in overburden intervals.

This research evaluated light hydrocarbon geochemical compositions in the near-surface, overburden, and reservoir intervals at three CO2 Enhanced Oil Recovery (CO2-EOR) sites along the Gulf Coast. At site A, high concentrations of CO2 and CH4 were observed in soil gas adjacent to a producing well. However, a variety of geochemical parameters (radiocarbon, methane stable isotopes) indicated natural microbial formation rather than well leakage. A work flow is presented to attribute fluid sources for future leakage accusations from CO2-EOR or shale gas operations.

At site B, natural hydrocarbon seepage to the surface was documented before initial field production. Geochemical changes during migration will be compared with numerical simulations of alteration processes. High concentrations of groundwater methane are observed at site C, and further data collection is proposed to understand fluid sources. Given that buoyancy-driven fluid migration through earth materials is relevant to numerous applied disciplines, numerical models and fluid source attribution methods proposed in this research are designed to be adapted to other environmental and industrial problems.

 

Biography

Jacob Anderson has worked on a wide range of geoscience and engineering problems in industry, academia, and a non-profit organization. He received a bachelor’s of science in Petroleum Engineering from LSU and completed undergraduate internships at ExxonMobil and BP. After graduation, he worked as a petrophysical engineer on deepwater Gulf of Mexico projects for Shell. However, Jacob left the oil and gas industry to volunteer for a year on potable water projects in South America with Engineers without Borders. After returning to the US, Jacob received a master’s degree in Geology at Boston College. His MS thesis addressed groundwater contamination in a public water supply wellfield.

Jacob is currently pursuing a PhD in Geology at the University of Texas at Austin. He is funded through Carbon, Capture, & Storage projects in collaboration with the Texas Bureau of Economic Geology. Jacob’s PhD research investigates hydrocarbon geochemical changes during upward migration. Results of his work have implications for Carbon, Capture, & Storage and the oil & gas industry.

Technical Meeting and Luncheon: Tuesday, November 10, 2015

November 6th, 2015

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Multi-Attribute Rotation Scheme (MARS) – A tool for reservoir property prediction from seismic inversion attributes.

Pedro Alvarez (RSI) & Francisco Bolivar (RSI)

ABSTRACT:

The multi-attribute rotation scheme (MARS) is a methodology that uses a numerical solution to estimate a transform to predict petrophysical properties from elastic attributes.  This is achieved by estimating a new attribute in the direction of maximum change of a target property in an n-dimensional Euclidean space formed by n-number of attributes, and subsequent scaling of this attribute to the target unit properties. The transform is computed from well-log-derived elastic attributes and petrophysical properties, and posteriorly applied to seismically-derived elastic attributes.  Such transforms can be used to estimate reservoir property volumes for reservoir characterization and delineation in exploration and production settings, and to estimate secondary variables in geostatistical workflows for static model generation and reserve estimation.  To illustrate the methodology, MARS was applied to estimate a transform to predict water saturation and total porosity from elastic attributes in a well located in the Barents Sea, as well as, to estimate a water saturation volume in a mud-rich turbidite gas reservoir located onshore Colombia.

 

SPEAKER BIO:

Pedro Alvarez holds a B.S. degree in Geophysical Engineering from Universidad Central de Venezuela (2002), ranking first in his class. He holds an M.S. degree in Petroleum Geophysics, from Instituto Superior de la Energia/Heriot-Watt University (2007). He worked for eight year as Seismic Interpreter and Reservoir Geophysicist for PDVSA focusing in structural and quantitative seismic interpretation of clastic and carbonate reservoirs. Since 2012 he has been working for RSI, where he currently has the position of Team Lead/Sr. QI Geoscientist. In this position his main responsibility is the quantitative interpretation of post-stack, AVO, seismic inversion and CSEM attributes using a geological, geostatistical and rock physics framework. He has experience working in projects from Venezuela, Colombia, Mexico, USA, Australia, Falkland Island, Middle-East and Norway. He is member of the SEG, AAPG and EAGE.

Pedro_Alvarez