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Title: Improved efficiency and cost savings: Horizontal drilling, South Florence Field, Vermilion Parish, Louisiana

Abstract

Significant cost savings and improved recovery efficiency was demonstrated by the successful completion of a horizontal well in the South Louisiana middle Miocene trend of Vermilion Parish. This completion also represents the first gravel-packed horizontal well completion in the Gulf Coast. The Amoco No. 104 Watkins well was drilled in South Florence Field to a total depth of 6878 feet MD (5686 feet TVD) as a horizontal well to minimize coning. The well was completed in November, 1994 from an open hole completion over a 600 feet horizontal section (6278-6878 feet MD). The well tested as high as 1079 BOPD, 769 MCFG, and 27 BW. The completed well cost of $1.1MM represents $600M savings over the cost of two vertical wells that would have been necessary to effectively drain the reservoir. The horizontal target interval was the upper 8 feet of a 148 foot sand with a 30 foot hydrocarbon column. A well was drilled before the No. 104 to serve as both a pilot hole and to test deeper objectives. The No. 104 was then drilled and encountered the top of the objective reservoir within 150 feet of the pilot hole. The trap is an upthrown fault closure onmore » a down-to-the-east fault associated with the South Florence graben system, the result of deep-seated salt movement. Structural control is provided by numerous wells and a 3-D seismic data set. An oil-water contact defines the downdip limit of this 63 acre reservoir. The completed reservoir, the {open_quotes}5400 foot Sand-lower lobe{close_quotes} is a very fine-grained, silty deltaic sand with sidewall core porosities of 28.9-32.3% and permeabilities of 1100-1050 md.« less

Authors:
; ;  [1]
  1. Amoco Production Co., Houston, TX (United States); and others
Publication Date:
OSTI Identifier:
150576
Report Number(s):
CONF-9510222-
Journal ID: AABUD2; ISSN 0149-1423; TRN: 95:007541-0049
Resource Type:
Journal Article
Journal Name:
AAPG Bulletin
Additional Journal Information:
Journal Volume: 79; Journal Issue: 10; Conference: American Association of Petroleum Geologists (AAGS) Gulf Coast Section meeting, Baton Rouge, LA (United States), 25-27 Oct 1995; Other Information: PBD: Oct 1995
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; LOUISIANA; OIL FIELDS; STRATIGRAPHY; DIRECTIONAL DRILLING; COST; ECONOMICS; PETROLEUM; ENHANCED RECOVERY; RESERVOIR ROCK

Citation Formats

Spencer, J A, Gillham, T H, and Kutch, A T. Improved efficiency and cost savings: Horizontal drilling, South Florence Field, Vermilion Parish, Louisiana. United States: N. p., 1995. Web.
Spencer, J A, Gillham, T H, & Kutch, A T. Improved efficiency and cost savings: Horizontal drilling, South Florence Field, Vermilion Parish, Louisiana. United States.
Spencer, J A, Gillham, T H, and Kutch, A T. 1995. "Improved efficiency and cost savings: Horizontal drilling, South Florence Field, Vermilion Parish, Louisiana". United States.
@article{osti_150576,
title = {Improved efficiency and cost savings: Horizontal drilling, South Florence Field, Vermilion Parish, Louisiana},
author = {Spencer, J A and Gillham, T H and Kutch, A T},
abstractNote = {Significant cost savings and improved recovery efficiency was demonstrated by the successful completion of a horizontal well in the South Louisiana middle Miocene trend of Vermilion Parish. This completion also represents the first gravel-packed horizontal well completion in the Gulf Coast. The Amoco No. 104 Watkins well was drilled in South Florence Field to a total depth of 6878 feet MD (5686 feet TVD) as a horizontal well to minimize coning. The well was completed in November, 1994 from an open hole completion over a 600 feet horizontal section (6278-6878 feet MD). The well tested as high as 1079 BOPD, 769 MCFG, and 27 BW. The completed well cost of $1.1MM represents $600M savings over the cost of two vertical wells that would have been necessary to effectively drain the reservoir. The horizontal target interval was the upper 8 feet of a 148 foot sand with a 30 foot hydrocarbon column. A well was drilled before the No. 104 to serve as both a pilot hole and to test deeper objectives. The No. 104 was then drilled and encountered the top of the objective reservoir within 150 feet of the pilot hole. The trap is an upthrown fault closure on a down-to-the-east fault associated with the South Florence graben system, the result of deep-seated salt movement. Structural control is provided by numerous wells and a 3-D seismic data set. An oil-water contact defines the downdip limit of this 63 acre reservoir. The completed reservoir, the {open_quotes}5400 foot Sand-lower lobe{close_quotes} is a very fine-grained, silty deltaic sand with sidewall core porosities of 28.9-32.3% and permeabilities of 1100-1050 md.},
doi = {},
url = {https://www.osti.gov/biblio/150576}, journal = {AAPG Bulletin},
number = 10,
volume = 79,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1995},
month = {Sun Oct 01 00:00:00 EDT 1995}
}