PETROLEUM GEOLOGISCHE KRINGKONINKLIJK NEDERLANDS GEOLOGISCH EN MIJNBOUWKUNDIG GENOOTSCHAP PGKTreasurer:

Bank account:Giro account:

Bert Cleverc/o Wintershall Noordzee BVPO Box 823012508 EH Den Haas.88 65 82 733 (VSB, Den Haag)40 74 482

Secretary: Thea van de Graaff - TrouwborstSir Winston Churchilllaan 1009 A2286 AD RijswijkPh. and fax: 01742 - 98022

FEBRUARY 1995 NEWSLETTERFORTHCOMING PGK EVENTS

February 22

March 15

April 19

Mav 17

Prof.Dr.A.H. BoumaLouisiana State Univ.

Dr. S. CrittendenHRH

Dr. Ewan CampbellTNO-IGG

Mieke KosterTU Delft

Geological architecture of mud-rich, submarine-fanreservoirs

Depositional styles, paleaoenvironment, stratigraphy andreservoir potential of the Lower Cretaceous in the NorthSea and West of Shetland area

Seismic modelling of outcrops

Gas reservoirs in the Carboniferous of the Central DutchOffshore.

PGK FEBRUARY MEETINGThe PGK February meeting will be held on Wednesday, February 22nd, at 17:45 pm andwill be preceded by aperitifs from 17:00 pm onvvards. The lecture will be held at the KIVI building,Prinsessegracht 23, The Hague.Prof. Dr. Arnold H. Bouma of Louisiana State University will speak about: 'Geologicalarchitecture of mud-rich submarine-fan reservoirs'. The speaker has provided thefollowing abstract:

Exploration and production of oil and gas from fine-grained, mud-rich turbiditesystems (submarine fans), present in the Gulf of Mexico region and around the SouthAtlantic encounter several problems. Sequence stratigraphy provides a good framevvork.but the seismic resolution is insufficient to identify individual reservoir sands. 3-D seismicmay give a much more complete picture, but the interpretation commonly depends on thegeological expertise of the operator. Well-log correlation between wells can run intosnags.

Submarine fans comprise the second-largest reservoir possibility for hydrocarbons.Tectonic uplift of coarse-grained, sand-rich deposits results in tilted outcrops that are toosmall to study lateral correlation. However, models of these types of fans are notapplicable to the Gulf. Studies of the Mississippi Fan (DSDP Leg 96) and the Permiandeposits in the Tanqua Karoo of South Africa vvith their non-tilted exposures over 22miles (34 km) provide a better example of mud-rich fans.

The basin-floor fan deposits start vvith a channel complex at the base of slope.Channels cut into each other. resulting in a complex of sandstones vvith remnants ofshale-rich levee deposits. causing a high tortuosity. This complex changes dovvndip intoone or more individual leveed channels, often with massive channel sands and ratherclean levee deposits (lovv-resistivity, lovv-contrast. thin-bedded sandstones), that can bevery oil-prone. The leveed channels gradually become less channelised and change intosheet sands that have a complex internal architecture.

An in-depth understanding of the architecture is required to successfully constructsynthetic seismics and w ell logs and to compare those to the area of interest. That can befollowed up vvith the construction of the best applicable model to understand thereservoir and its lateral and vertical continuity.

OTHER EVENTS OF INTEREST TO PGK MEMBERSFebruary 13 SPE meeting: 3D reservoir modellina. Bel Air Hotel. The Hague, 18:00 pm. register

with Ron Mientjes ( 070 - 3105445)"February 16 Dutch Petrophysical Society, lecture by J. v. Baaren (Hagoort Ass). on permeability

derived from logs using capillary pressure curve measurements. KIVI, 6pmFebruary 24 Sedimentologische Kring: annual meeting and sedimentology day at TNO-

Institute of Applied Geoscience. Ring Carla Leyzers-Vis at 023-300222 for details.Feb. 29-Mar. 2 SPE/IADC Drilling Conference, RAI Amsterdam. (00^4-71-487 4250)March 20 SPE meeting: 'How to get close to reality'. Bel Air Hotel. The Hague, 18:00 pm,

register with Ron Mientjes ( 070 - 3105445)March 17 NGMSO Congress: 'De invloed van de mens op het systeem aarde', Amsterdam, for

info ring 020-444 7524March 24 Contact day KNGMG at NAM, Assen, fax Leendert Witte at 0232-352184May 15-16 SPE Conference 'European Damage Control 1995.' The Hague, ring 71-4874250May 29- June 2 EAPG 7th Conference and exhibition, Glasgow, Scotland.October 8-11 1995 AAPG international conference and exhibition 'Managing Change at the

turn of the Century', Nice, France

PGK 1995 ANNUAL MEETINGThe PGK AGM will convene on February 22, at 17.30. Nominations for the 1995 Committee are:Chairman Drs. J.T. Gelderloos* RockallVice Chairman Dr. H. Dronkert** TU Delft Mining and Petroleum Eng.Treasurer Drs. B. Cl ever*** Wintershall BVSecretary Dr. A.E. Campbell**** TNO IGGCommittee member Drs. L.B. Alblas Alblas Consultants* At present Vice Chairman.** Dr. J.W. Focke was transferred abroad suddenly .** *The treasurer is automatically reselected for one more year.*** *The current secretary has served over two years and is not eligible for another year.After the annual meeting we will enjoy our annual dinner at the Mangerie, Laan van Roosen Doorn 51a, a 10-minute walk from the KIVI building, from 20:15 pm onwards. Thosewho wish to attend please complete the enclosed form and return it bef ore February 15thto the secretary, accompanied by a bank or giro cheque to the value of ƒ 50,- made out toTreasurer PGK. Please forward your reservation and payment promptly as we have toadvise the restaurant about the number of members (and partners) attending, in any casebefore Wednesday, February 15th.

MEMBERSHIPApplications for PGK membership: Matthias Hartung (SIPM), David F. Kluesner (SIPM),Jos Pragt (Baker Hugues Inteq), Edmund J. Sides (ITC) and Dr. Wouter Zijl (TNO,Institute of Applied Geoscience). If no objections are received before or at the nextmeeting, these applicants will automatically become members.Our records have been updated up to January 30th, 1995. The PGK now boasts 358members. of whom 104 have already paid their '95 dues. Tvventy five members who didnot pay for four years were suspended last month, 172 members see '95' printed asbottom line of their labels, they have to pay ƒ25,-, i.e. one year's dues, 71 still have to paytwo years dues and 12 three years. File the reminder included in this newsletter with yourbills to remind yourself to settle your outstanding dues this February.

JOB QPPORTUNITYWe received a call from Energie Beheer Nederland (EBN), offering a job opportunity foran experienced exploration or development geophysicist/ geologist (or an experiencedfield engineer). Ring Thea (01742-98022) or G. Hazeu at ÈBN (045-782576) , who willmail or fax the full details.

SPQNSORSHIPThe PGK thanks the foliowing six companies, who responded to PGK's 1995 request forsponsoring. May many more follow their example. At present the PGK is paying thepostage charges, we would welcome another sponsor for our mailing expenses.

ARGO GEOLOGICAL CONSULTANTS, ATLAS WIRELINE SERVICES,FINA NEDERLAND BV, ORANJE NASSAU ENERGIE BV.

ROCKALL NETHERLANDS BV, WINTERSHALL NOORDZEE BV.

REGISTRATION FORM ANNUAL DINNER 1995 / Mangerie!

NAME

ADDRESS

POSTCODE CITY

PHONE l enclose a cheque for ƒ 50,-

Please return to: T. van de Graaff -Trouwborst, secretary PGKS.W. Churchilllaan 1009A, 2286 AD Rijswijk

1995 PGK FIELD SEMINAR IN THE OSNABRüCK AREAThe 1995 PGK field seminar will take place from 12-15 May. We will stay in

Ibbenbüren, an historical coal-mining town. Among the well-exposed CarboniferousWestphalian C/D sandstones, we will examine high-sinuosity channel deposits, point-bardeposits, mudstone-dominated sequences and braided-river deposits to end with thecontact of the Upper Carboniferous (Westphalian D) and the Zechstein (Coppershale).

This is a unique opportunity to see the dinosaur tracks on the Jurassic(Kimmeridgian) sediments.

The field-trip area is of particular relevance to PGK members as the excellentoutcrops are the direct equivalents of Carboniferous sequences encountered in thenorthern part of the Dutch Offshore.

A preliminary list of participants is open from now on. The cost of the trip will beapproximately ƒ300,-. The bus will leave The Hague on Friday May 12th, around 16:00pm and return to The Hague the following Sunday May 15th, around 19:00 pm. If youintend to take part in this field seminar, please complete the form below as soon aspossible, because the maximum number of participants will be 40. Applications will betreated strictly on a first-come, first-serve basis.

Further particulars from Leo Alblas. 010- 4672016^

l will attend the PGK field seminar in Germany from May 12-15, 1995

NAME

ADDRESS

POSTCODE CITY

PHONE

Please return to: LEO ALBLAS, Bergweg149a, 3037 EG Rotterdam.

ReminderPay ƒ25.- for each year mentioned on the bottom line of your mailing label into:

Bank account: 886582733 (VSB, Den Haag)or Postgiro account: 4074482

in the name of Treasurer PGK, stating your name and for what year(s) thisamonnt is intended.

PETROLEUM GEOLOGISCHE KRINGKONINKLIJK NEDERLANDS GEOLOGISCH EN MUNBOUWKUNDIG GENOOTSCHAP P G K

Secretary: Drs. Thea van de Graalï-TrouwborstSir Winston Churchilllaan 1009 A

2286 AD RijswijkPh. and fax: 01742 - 98022

Secretary's Report 1994The 1994 committee consisted of these members:Chairman Prof. Ir. K J. Weber TU Delft MijnbouwVice Chairman Drs. J.T. Gelderioos GAPSTreasurer Drs. B. Clever WintershallSecretary Drs.T.C.M. v. d. Graaff-Trouwborst Thema GeologicaCommittee member Drs. A. van Wijhe Placid

In January 1994, the PGK had 370 members. During the year. one of ourmembers, Pieter van Gijzel, died, 26 new members joined, whereas 17 memberscancelled their membership and of the original 16 unfinancial members. 10 wereeventually struck off the mailing list. This left the PGK with 368 ordinarymembers on January l, 1995. In December 1994 the secretary c.s. distributed 120brochures, detailing 1994 and 1995 PGK activities and containing an applicationform, through Shell internal mail to all eligible geologists in SIPM and KSEPL.This yielded a total of 4 new members. In January 1995 the 24 members vvho, atthat stage, had not paid their dues for over four years received a letter informingthem of the fact that their membership was terminated unless they paid theiroutstanding dues. Until now, only three did so. During 1994, there were 43mutations, changes of address or employer. The 26 new members received awelcoming letter and a copy of the 1993 membership list and historical record.

During 1994, ten PGK Newsletters were sent to all members, the distributionof which was paid for by Atlas Wireline Services. Thank you Nigel, Janeand Annelies for copying and folding and being so patiënt with me while I usedthe franking machine. Unfortunately Atlas closed its The Hague office and thePGK is currently looking for a new mailing sponsor.

Fifteen letters were sent requesting speakers to present a talk. The dates of oneof the programmed lectures had to be changed and one speaker had to cancel.The two substitute speakers presented very interesting lectures. Attendance at allmeetinss was satisfactory, ranains from 29 in June to 82 in Februarv 1994. Thew J - '— •—• ^

1994 Annual dinner at Alfonso's on February 16th was attended by 32 membersand partners.

The KNGMG Nieuwsbrief and SPE Bulletin were informed of our lectures andboth listed all PGK activities. From its start we have cooperated with the DutchPetrophysical Society (DPS) by announcing each other's lectures. The PESGBand EAPG (First Break) occasionally also mentioned PGK activities.

We receïved announcements from the Palynological Circle and theSedimentological Circle, the DPS and the KNGMG. If timing permitted, theseevents were included in the PGK newsletter. The EAPG sent us seven letters overthe past year, mainly on the subject of its merger with the EAEG. Labelscontaining the names and addresses of all PGK members were supplied to theEAPG to use for their membership drive to send all PGK members a once-onlycopy of First Break and to the AAPG to distribute a call for the 1995 Nice AAPGConference.

The field seminar to the Wessex basin around Weymouth from 26-29 May ledby Professor Dr. Stoneley from Imperial College, London, attracted 36participants who enjoyed the spectacular outcrops, great weather and beautifulscenery.On September llth , twelve PGK members enjoyed Wim Dubelaar's guidedwalk past 'outcrops1 in the walls of Haarlem's historical buildings and thesubsequent visit to Teylers Museum.

PGK reprinted and distributed 80 reprints for field guides of the 1993 TheHague AAPG Conference. In January 1995 we received a 20% share of theamount the KNGMG was paid out of the profits of that conference.The PGK committee decided to use this unexpected bonus on promotion ofgeology in general and set up a competition aimed at geography teachers andstudents for the writing of a geology course booklet intended for the higherforms of primary school and the first few forms of secondary school. Thecompetition was announced in the KNGMG, KNAG, NGV and GEA February'95 newsletters and up to 20/2/95 eighteen requests for documentation packageshave been met. The brochures that make up such a package were provided byNAM, NMM, RGD and TFC. If the quality of the winning document permits,the PGK intends to multiply and distribute that booklet to as many interestedschools as possible.

The PGK committee convened four times and in between communicatedsuccessfully through countless phonecalls and faxes. All speakers were taken outto dinner after the lectures by PGK committee members or in some cases byformer committee members.

For all 1994 activides, PGK thanks the following 15 sponsors, who contributed atotal of ƒ16,635.- and were mentioned in our newsletters:

ARGO GEOLOGICAL CONSULTANTS, BAKER-HUGHES (INTEQ),CLAM PETROLEUM COMPANY, CLYDE PETROLEUM EXPL. BV,

ELF PETROLAND BV, ENERGIE BEHEER NEDERLAND BV,GAPS NEDERLAND BV, GECO PRAKLA/ DELFT GEOPHYSICAL BV,

HAMILTON BROS OIL AND GAS LTD., IRO, ORANJE NASSAU ENERGIE BV,PLACID INTERNATIONAL OIL COMPANY, SHELL NEDERLAND BV,

VEBA OIL NEDERLAND BV, WINTERSHALL NOORDZEE BV.Similar to 1994, requests were sent mid January 1995 to 50 potential sponsors.Up to 20/2/95 only eight companies had reacted positively, contributing a totalof ƒ5650,-. The PGK is noticing the same cut-backs as many companies andconsequently the new committee will have to economize.

We received announcements from the Palynological Circle and theSedimentological Circle, the DPS and the KNGMG. If timing permitted, theseevents were included in the PGK newsletter. The EAPG sent us seven letters overthe past year, mainly on the subject of its merger with the EAEG. Labelscontaining the names and addresses of all PGK members were supplied to theEAPG to use for their membership drive to send all PGK members a once-onlycopy of First Break and to the AAPG to distribute a call for the 1995 Nice AAPGConference.

The field seminar to the Wessex basin around Weymouth from 26-29 May ledby Professor Dr. Stoneley from Imperial College, London, attracted 36participants who enjoyed the spectacular outcrops, great weather and beautifulscenery.On September l l th , twelve PGK members enjoyed Wim Dubelaar's guidedwalk past 'outcrops' in the walls of Haarlem's historical buildings and thesubsequent visit to Teylers Museum.

^ PGK reprinted and distributed 80 reprints for field guides of the 1993 TheHague AAPG Conference. In January 1995 we received a 20% share of theamount the KNGMG was paid out of the profits of that conference.The PGK committee decided to use this unexpected bonus on promotion ofgeology in general and set up a competition aimed at geography teachers andstudents for the writing of a geology course booklet intended for the higherforms of primary school and the first few forms of secondary school. Thecompetition was announced in the KNGMG, KNAG, NGV and GEA February'95 newsletters and up to 20/2/95 eighteen requests for documentation packageshave been met. The brochures that make up such a package were provided byNAM, NMM, RGD and TFC. If the quality of the winning document permits,the PGK intends to multiply and distribute that booklet to as many interestedschools as possible.

The PGK committee convened four times and in between communicatedsuccessfully through countless phonecalls and faxes. All speakers were taken outto dinner after the lectures by PGK committee members or in some cases byformer committee members.

For all 1994 activities, PGK thanks the following 15 sponsors, who contributed atotal of ƒ16,635.- and were mentioned in our newsletters:

ARGO GEOLOGICAL CONSULTANTS, BAKER-HUGHES (INTEQ),CLAM PETROLEUM COMPANY, CLYDE PETROLEUM EXPL. BV,

ELF PETROLAND BV, ENERGIE BEHEER NEDERLAND BV,GAPS NEDERLAND BV, GECO PRAKLA/ DELFT GEOPHYSICAL BV,

HAMILTON BROS OIL AND GAS LTD., IRO, ORANJE NASSAU ENERGIE BV,PLACID INTERNATIONAL OIL COMPANY, SHELL NEDERLAND BV,

VEBA OIL NEDERLAND BV, WINTERSHALL NOORDZEE BV.Similar to 1994, requests were sent mid January 1995 to 50 potential sponsors.Up to 20/2/95 only eight companies had reacted positively, contributing a totalof ƒ5650,-. The PGK is noticing the same cut-backs as many companies andconsequently the new committee will have to economize.