News

Privacy Statement

Sunday 3 June 2018

The PGK complies with the GDPR (or in Dutch AVG) as implemented on 25 May 2018. Follow this link (pdf) for the full text of our privacy statement.

Membership renewal 2019

Saturday 24 February 2018

Please renew your membership for 2019 before March 31st. Click here to to to the membership sign-up or renewal form.

Changes in the board 2019

Thursday 22 February 2018

We are reaching out to all PGK members interested in joining the board by February 2019 due to our regular rotation scheme. Positions will open for chair, secretary, excursion secretary and webmaster. Please approach us at one of our regular events or send us an email.

Sponsors

Upcoming Events

excursion
drinks
meeting

excursion · drinks · meeting

Wednesday 21 November 2018  17:00

PGK Monthly Lecture November 2018 - Integrated approach to tackle K18-Golf gas field seismic and reservoir modelling challenges

Lecturer: Koos Pipping (Wintershall)

Program:
17:00 - 18:00: Social hour
18:00 - 19:00: Lecture
19:00 onwards (after drinks at own expense at Cafe Hathor)

Authors: J.C.P. Pipping, A. Wever, R. Bachmann, V. Smirnov (Wintershall Noordzee B.V.)

Abstract: The Wintershall Noordzee operated K18 Golf field is located ca. 50 km WNW of Den Helder in the middle of a restricted military area. The gas field was discovered by well K18-7x in 2005 and subsequently appraised by well K18-8. The reservoir consists of a 270-m thick Rotliegend (Permian) sandstone reservoir with average porosities of less than 10%. The reservoir quality is very heterogeneous and of a tight nature with average permeabilities of 0.6 mD.

The development started in 2011 with two subsea wells, one horizontal (K18-G1) with five fracs and one vertical (K18-G4) with two fracs. The gas is produced via NAM's K15-FA platform. The horizontal well was producing above expectation and the vertical well produced lower than expected. The latter showed still pressure build up after one-year shut-in, indicating poor connectivity potentially influenced by sub-seismic faults. An additional horizontal well (K18-G2) with four fracs came into production in 2015 and showed preferential depletion of layers and blocks, which is expected in this 'labyrinth' type of reservoir. Requirement for infill drilling is currently investigated.

The complex geological setting of the K18-Golf gas field calls for a truly integrated reservoir modelling approach to understand the well performance and plan additional infill wells. Tectonic deformation, resulting in complex structures, causes serious seismic illumination issues at the Rotliegend target level. Multi-azimuth depth imaging (NAZ, WAZ, MAZ) permits more reliable reservoir characterisation with identification of possible baffles and fault compartments. After treating each processed acquisition dataset as stochastically independent realisation of the earth, their relative and independent quality variations are interpreted in terms of imaging and fault position uncertainty. Reservoir simulations have included the seismic uncertainties for the fault position in a creative way. The occurrence of shale layers (flow baffles) is represented as a list of K-layers, which vertical transmissibility is varied. The dynamic modelling is hampered by the lack of reliable pressure and rate measurements per well.

Location

KIVI
Prinsessegracht 23
2514 AP
Den Haag
View map


View larger map

lecture
dinner
meeting

lecture · dinner · meeting

Wednesday 19 December 2018  17:00 - 23:30

XMAS Lecture, Dinner and Dance (40 years PGK) 2018

Organiser: PGK
Lecturer: Remco de Boer

Please join us for a stylish PGK Lustrum event to celebrate 40 years of PGK and Christmas at this wonderful location. Dresscode is Christmas casual chique. Our speaker will be Remco de Boer who will present his views on "The Dutch Energy Transition - Facts and Fiction in the perspective of Global Climate Change". Registration will be online from 1 November onwards and for members only. Following registration, closer to the event date, all attendees will receive a QR code to enter the station (if not traveling by train).

Please follow this link for more information and online registration.

Location

MAF Event Location
Station Haarlem CS, Perron 3 (Wachtkamer 2e klasse)
2011 LR
Haarlem
View map


View larger map