Optimizing field development of Deep Cretaceous fractured reservoirs, Lake Maracaibo, Venezuela

R. Franseen, V. C. Vahrenkamp, W. J.E. Van Der Graaff, P. J. Muñoz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The Deep Cretaceous carbonate reservoirs of Lake Maracaibo, Venezuela, produce mainly from openfractures. Any improvement in production rate requires optimal access of the wellbore to open fractures. Well tracks with maximum rates of open fracture interception have been calculated using computer models for a structure defined by the Icotea fault in Block IX. Optimum well tracks are towards azimuth 330° with deviation 60° in the West Flank and towards azimuth 030° with deviation 60° in the East Flank. The open fracture networks consist of incompletely cemented or leached fractures which contain a "channel and island" structure of interconnected porosity. This structure, in combination with the high rock matrix strength and the subparallel strike of the open fractures relative to the E-W trend of the present-day maximum horizontal stress, indicate that it is unlikely that the conductivity of individual fracture will be reduced drastically upon pressure depletion. The reservoir geological model established for Block IX is consistent with data obtained from the West Flank of Block I, some 40 km to the north and therefore has regional validity.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Latin America Petroleum Engineering Conference, LAPEC 1992
PublisherSociety of Petroleum Engineers (SPE)
Pages43-52
Number of pages10
Volume1992-March
ISBN (Print)9781555635138
StatePublished - Jan 1 1992
Externally publishedYes
Event2nd SPE Latin America Petroleum Engineering Conference, LAPEC 1992 - Caracas, Venezuela, Bolivarian Republic of
Duration: Mar 8 1992Mar 11 1992

Conference

Conference2nd SPE Latin America Petroleum Engineering Conference, LAPEC 1992
CountryVenezuela, Bolivarian Republic of
CityCaracas
Period03/8/9203/11/92

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

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