Exploration Petroleum Geology

2MB Size 4 Downloads 58 Views

This course will complement their academic university petroleum geology courses, .... well logging, testing, petrophysics, reservoir modeling and management.


|Exploration Petroleum Geology | |(From the Petroleum System to the prospect resource assessment) | | |Day |1. Introduction | |Professor: Dr.Bernard Fourcade|1 |Preliminary remarks | | | |Basin petroleum evaluation and prospect | |[pic] | |concepts | | | | | |Detailed CV on www.totalprof | |2. Hydrocarbon available for prospect | |.com | |charging | | | |Source rock characteristics | |Objectives : | |Source rock potential and type | |For future petroleum | |Maturation, transformation ratio | |explorationists, this course | |Migration, Petroleum System efficiency | |provides an up-to-date and | |My source rock becomes my productive | |professional introduction of | |reservoir. Introduction to shale oil and gas| |resource and risk assessment | | | |of a prospect before drilling.| |Lectures and exercises | |The petroleum system elements | | | |and processes are also | | | |revisited, but with an | | | |application oriented approach.| | | | | | | |Who should attend : | | | |University students in geology| | | |or geophysics at a Master | | | |level. This course will | | | |complement their academic | | | |university petroleum geology | | | |courses, by integrating the | | | |whole petroleum evaluation | | | |process from the basin | | | |regional scale to the prospect| | | |scale. | | | |For undergraduate students at | | | |BSc level , this course can be| | | |adapted as a comprehensive | | | |introduction to petroleum | | | |geology | | | | | | | |Prerequisites : | | | |A comprehensive background in | | | |general geology and seismics | | | |is required for such a course | | | |(e.g. petrography, | | | |sedimentology, structural | | | |geology, organic and inorganic| | | |geochemistry, seismic | | | |principles and | | | |interpretation…) | | | |A basic knowledge of petroleum| | | |geology is also recommended | | | |and will be a plus to | | | |successfully attend this | | | |course. | | | | | | | |A good understanding of | | | |English is also requested | | | | | | | |Duration: | | | |5 half days of about 3 ½ to 4 | | | |hours each, | | | |about 15-18 hours for the | | | |whole course. | | | |. | | | |Duration can be adapted to the| | | |students’ | | | |knowledge, requirements, | | | |interests and needs. | | | | | | | |Language: | | | |Course in French or English | | | |Power Point slides only in | | | |English; | | | | | | | |Handouts: | | | |One paper copy booklet (A4 | | | |size, with 4 color slides per | | | |page). | | | |One exercise booklet | | | |No digital support provided | | | |(eg. on CD or USB key) because| | | |problems of data | | | |confidentiality. | | | | |Day |3. Hydrocarbon fluid prediction | | |2 |HC fluid characteristic basics | | | |Before trapping : source-rock type, | | | |maturity, migration | | | |During and after entrapment : | | | |PVT, Pressure Volume Temperature inside | | | |reservoir | | | |H2S and CO2 origin, Oil cracking | | | |Fluid contact determination | | | |Alteration: gas stripping, water washing, | | | |asphaltens, | | | |Biodegradation | | | |Seal efficiency | | | |Oil to oil and SR to oil correlations | | | |(biomarkers, isotopes) | | | | | | | |Lectures , exercises, and videos | | |Day |4. Reservoir parameters prognosis | | |3 |Reservoir characteristics | | | |Depositional environments for sandstones | | | |Diagenesis, sandstone reservoir changes | | | |during burial | | | | | | | |Lectures and videos | | |Day |5. Trap definition | | |4 |Classification of traps : | | | |Structural traps, examples | | | |Stratigraphic and mixed traps, examples | | | |Traps associated with salt tectonics, | | | |examples | | | | | | | |Lectures and exercises | | |Day |6. Prospect resource assessment | | |5 |Prospect definition and evaluation, single | | | |objective | | | |Resource distributions | | | |Probability of Success, risk assessment | | | |Multi objective prospect | | | |Conclusions | | | | | | | | | | | |Lectures and exercises | | | | | | | |Exam : quiz with 20 multi-choice questions | | | |Version B Fourcade 16/01/2013 |

Exploration Petroleum Geology Lomonosov Moscow State University, Moscow, Russia, March 25th – 29th 2013

From the petroleum system to the prospect resource assessment

Course detailed programme

by Dr. Bernard Fourcade, from the Total Professor Association

Day 1: Monday , March 25th, 2013

1 - Introduction - 100. Course content, requirements , preliminary remarks - 110. Basin petroleum and prospect evaluation concepts and methodology

2 – Hydrocarbon available for prospect charging - 200. Source rocks (=SR) o (201) SR characteristics, (202) SR parameters (=Petroleum potential), (203) SR types, (204) SR transformation ratio, (205) SR during geological times. - 210. Maturation o (211) Optical and (212) chemical techniques for maturity evaluation, (213) oil and gas windows, (214) transformation ratio. - 220. Hydrocarbon migration o Drainage areas, migrations routes, richness and efficiency of the petroleum systems, examples Exercice n° 1: define the HC migration pathways on a geological cross section 10’ - 230. My source rock is now my reservoir: o Introduction to shale gas. A worldwide game changer ? Video Mauritania

Day 2 : Tuesday , March 26th, 2013

3 - Hydrocarbon fluid prediction - 300. HC before entrapment o Fluid characteristics according to source rock types, maturity .. - 310. HC fluids inside the reservoir o Fluid characteristics at reservoir conditions, PVT, classification Exercice n°2: determine the fluid characteristics of a prospect by calibration from a nearby field using thermodynamic phase diagram 15’ - 320. Non hydrocarbon fluids o H2S, CO2, origin and risks Video: CO2 capture and sequestration at Lacq pilot plant , France



- 330. Oil cracking o Thermal changes of oil inside a reservoir - 340. Fluid contact determination o Oil/water, Gas/oil or Gas/water contact determination for prospect or fields, from seismics, logs, pressure gradients, RFT/MDT/DST, Exercice n°3 : fluid contact determination from a RFT plot 15’

- 350. Oil to oil and source rock correlations o Organic geochemistry techniques, gas chromatography, molecular geochemistry, mass spectrometry, biomarkers, stable isotopes; application examples - 360. HC Fluid alteration inside the reservoir o Biodegradation, water washing, gas stripping, asphalten precipitation. Impact on the oil characteristics - 370. Top Seal efficiency optional o Top and fault seal evaluation

Day 3 : Wednesday , March 27th, 2013

4 - Reservoir parameters prognosis - 400. Reservoir general characteristics o Reservoir definition, parameters controlling porosity, permeability, - 410. Sandstone reservoir depositional environments o Eolian, fluvial, deltaic, deep marine deposits, turbidites. Reservoir geometries, oil field examples. Video Akpo, deep offshore Nigeria - 420. Diagenesis of sandstone reservoirs (Optional depending of timing) o Porosity reduction by mechanical compaction, chemical compaction, Quartz cementation, clay coating, cement dissolution; impact on reservoir properties, examples

Day 4 : Thursday , March 28th, 2013

5 - Trap definition and classification - 500. Structural traps o Fold and fault associated traps, in different tectonic settings, field examples Video Sismage - 510. Stratigraphic and mixed traps o Classification, conformable, unconformity related traps, mixed structural and stratigraphic traps, examples Exercice n°4: imagine potential traps from a seismic section 20’ - 520. Salt tectonics o Salt structure nomenclature, examples of traps associated with salt



Day 5 : Friday, March 29th, 2013

Conclusions : to choose among 4 options:

6 - Prospect resource assessment - 600. Prospect definition: single objective o Required data, procedure and techniques used for prospect evaluation

- 610. Prospect resource distributions o How to build reserve/resource distribution for a prospect Exercices n°5: Structural closure of a prospect, Mini, Mode and Maxi closures 0.5 hour - 620. Risk assessment o Risk evaluation and Prospect Probability of Success - 630. Multi-objective prospects Exercice n°6: define 1P, 2P, 3P reserves from a map and a cross section over a drilled prospect 0.5 hour 7- The Exploration & Production process - The different phases of the Exploration and Production process: from preliminaries studies in exploration to the field abandonment at the end of production, through the basin evaluation, petroleum system definition, prospect assessment, exploration drilling, field appraisal, development and production. - Short review of the geosciences techniques used during the different phases of the E & P process: introduction to: satellite remote sensing, field geology, seismics, structural geology, sedimentology, well logging, testing, petrophysics, reservoir modeling and management. - The different jobs in petroleum geosciences : description of the different jobs and their specialities: geologists (well site geologist, field geologist, specialists, etc…), geophysicists (seismic acquisition, processing , interpretation, special techniques), reservoir engineers (petrophysicists, log analysts, reservoir modeling, etc..). - 8 - Examples of present day exploration challenges: - Back to the old days of surface geology exploration. A new petroleum province in the making: the Zagros in Kurdistan, Iraq - The Artic challenges - Application of the plate tectonic concept: exploration cruise across the South Atlantic Ocean : from the pre-salt Tupi/Ulla discoveries in Brazil to the Kwanza basin in Angola and from Jubilee in Ghana to Zaedius in French Guyana

Exam : Quiz with 20 multi-choice questions

Course evaluation by the students

----------------------- [pic]

Comments