THE EXPLORATION AND APPRAISAL HISTORY OF THE SKUA FIELD, AC /P2 - TIMOR SEA.

1990 ◽  
Vol 30 (1) ◽  
pp. 197
Author(s):  
M. Osborne
Keyword(s):  
Data Quality ◽  
Seismic Data ◽  
Joint Venture ◽  
Complex Field ◽  
Quality Improvements ◽  
Associated Gas ◽  
Seismic Acquisition ◽  
History Of ◽  
Timor Sea ◽  
Field Geology

The discovery of the Skua Field resulted from an extended and aggressive exploration program with major emphasis placed on gaining continual improvements in seismic data quality. Improved seismic data was principally responsible for the accurate delineation of the Swift and Skua structures which resulted in the drilling of the Skua-2 discovery well in 1985.A positive analysis of the results of Skua-2 (which clipped the fault bounded edge of the field) coupled with extensive new seismic acquisition and further seismic data quality improvements encouraged the AC/P2 Joint Venture to drill the field confirmation well Skua-3, in 1987.The appraisal stage of the Skua field included three further wells and was designed to investigate several specific problem areas: the modest structural size, the volume of a small associated gas cap, the presence of steeply dipping reservoir strata of interbedded sands and shales, and the effect of discrete zones of intense velocity anomaly.A major consideration has been to achieve a balance between exploration expenditure and the need to attain a thorough understanding of the complex field geology to reduce the uncertainties associated with the problem areas.The only potentially viable development option for Skua is to use subsea completions and a floating production facility (FPF). BHP Petroleum's engineering expertise and history of FPF developments at Jabiru and Challis is of great importance to successfully developing this smaller, more complex field.

THE ELANG OIL DISCOVERY ESTABLISHES NEW OIL PROVINCE IN THE EASTERN TIMOR SEA (TIMOR GAP ZONE OF COOPERATION)

1995 ◽  
Vol 35 (1) ◽  
pp. 44
Author(s):  
I. F. Young ◽  
T.M. Schmedje ◽  
W.F. Muir
Keyword(s):  
Seismic Data ◽  
Late Jurassic ◽  
Joint Venture ◽  
Seismic Survey ◽  
Normal Faults ◽  
Commercial Development ◽  
The North ◽  
3D Data ◽  
Porosity And Permeability ◽  
Timor Sea

The Elang-1 oil discovery in the Timor Gap Zone of Cooperation (ZOC) has established a new oil province in the eastern Timor Sea. The discovery well, completed in February 1994, recorded a flow of 5,800 BOPD (5,013 STBOPD) from marine sandstone of the Late Jurassic Montara beds. The oil is a light (56° API), undersaturated oil with a GOR of approximately 550 SCF/STB. Elang-1 was the first well drilled by the ZOCA 91-12 Joint Venture and only the fifth well in the ZOC since exploration of this frontier area resumed in 1992.The Elang Prospect, initially mapped by Petroz in the late 1970s on the basis of regional seismic data, was detailed by the 1992 Walet Seismic Survey. The prospect is the main crestal culmination on the Elang Trend, a prominent structural high to the north of the Flamingo High that was established during continental break-up in the Late Jurassic. The Elang Trend is bounded to the south by a series of en-echelon normal faults and connecting relay ramps and comprises a number of horst and tilted fault blocks.Elang-1 tested a near crestal culmination on the Elang Prospect and intersected a 76.5 m gross oil column below 3,006.5 m RT. At time of drilling this oil column was the thickest that had been encountered by any well in the Northern Bonaparte Basin. Good quality reservoir sandstone in six discrete bodies were intersected within the Montara beds. Core-measured porosity and permeability range up to 17 per cent and 2.2 Darcies within the oil column.Subsequent to the Elang discovery, the Joint Venture recorded a 402 km2 3D survey over the Elang Trend. Elang-2, an appraisal well spudded in September 1994 prior to receipt of the 3D data, established the lateral continuity of the Montara beds reservoirs. Flow rates of 6,080 BOPD (5,300 STBOPD) and 7,500 BOPD (5,970 STBOPD) from separate intervals have confirmed that high deliverabilities can be expected from individual sandstones. Further appraisal drilling is planned in the first half of 1995. This is expected to lead to commercial development of the field.

scholarly journals 3-D Land Seismic Acquisition in Saudi Arabia

GeoArabia ◽  
1996 ◽  
Vol 1 (4) ◽  
pp. 511-528
Author(s):  
Richard Hastings-James ◽  
Kamal M. Al-Yahya
Keyword(s):  
Saudi Arabia ◽  
Cost Effectiveness ◽  
Data Quality ◽  
Seismic Data ◽  
Sampling Strategy ◽  
Source Point ◽  
Universal Approach ◽  
Saudi Aramco ◽  
Seismic Acquisition ◽  
The Cost

ABSTRACT Between 1991 and 1996, Saudi Aramco has acquired more than 8,500 square kilometers of 3-D seismic data in Saudi Arabia. During this time, a universal approach to 3-D acquisition has been developed. The resulting acquisition schemes use a dense source point grid with a low sweep effort per source point, and a high number of recorded channels distributed over a large surface aperture. This sampling strategy results in high fold data. Cost-effectiveness is achieved by ensuring that the source and receiver effort are balanced. Comparisons have shown that increases in surface aperture and fold, cross-line fold in particular, improve the data quality significantly at a marginal increase in cost. The cost per unit of data is made significantly lower even if the cost per unit of time may increase.

Discovery to development: a subsurface case history of the Kitan Oil Field, Timor Sea, Joint Petroleum Development Area, Timor-Leste and Australia

2013 ◽  
Vol 53 (2) ◽  
pp. 439
Author(s):  
Dave Wheller ◽  
Grant Ellis ◽  
Yohan Suhardiman ◽  
Ryosuke Yokote ◽  
Doani Selvaggi ◽  
...  
Keyword(s):  
Joint Venture ◽  
Oil Field ◽  
Oil Accumulation ◽  
Field Development ◽  
Timor Leste ◽  
History Of ◽  
Timor Sea ◽  
Development Area ◽  
Petroleum Development ◽  
East West

The Kitan oil field is located in the northern Bonaparte Basin in the Joint Petroleum Development Area, an area jointly administered by Timor-Leste and Australia. The Kitan structure is a Jurassic east-west trending tilted fault block. The Kitan–1 exploration well was drilled and successfully tested in early 2008. Kitan–2 appraisal well was drilled immediately after Kitan–1 and intersected the reservoir up-dip from Kitan–1 and confirmed the extension of the oil accumulation. The main oil-bearing section is in the shallow marine sandstone of the Middle Jurassic Laminaria Formation. It is divided into two reservoir zones: a blocky channelised sandstone (Unit–2) overlain by a dominantly finer-grained succession composed of coarsening-upwards para-sequences (Unit–1). Kitan oil field was declared a commercial discovery in April 2008 and a field development plan was submitted in May 2009 and approved in April 2010. Four development wells were drilled of which three were completed as producers, each employing an intelligent completion design to enable independent control and monitoring of the two reservoirunits. The three wells were tied back subsea via flexible flowlines and risers to the Glas Dowr FPSO. Oil production from the Kitan started in October 2011, about 3.5 years after the discovery of the field. The fast-track development of Kitan was achieved due to accelerated appraisal, prompt completion of studies, early commitment to long lead items, and excellent support from joint-venture partners and government.

Land seismic data quality improvements

1998 ◽  
Vol 17 (11) ◽  
pp. 1570-1577 ◽  
Author(s):  
A. McGinn ◽  
B. Duijndam
Keyword(s):  
Data Quality ◽  
Seismic Data ◽  
Quality Improvements

scholarly journals Factory Tour of Nidec Servo Co. Ltd.

2009 ◽  
Vol 3 (2) ◽  
pp. 206-208
Author(s):  
Hiroyuki Kojima ◽  
Keyword(s):  
Joint Venture ◽  
Industrial Equipment ◽  
Synchronous Motors ◽  
History Of ◽  
Gear Mechanism ◽  
Venture Company ◽  
Joint Venture Company

1. History of Nidec Servo Co. Ltd. Nidec Servo Co. Ltd. is originated from Turumaki Clock Store founded in Tokyo in 1906, whose clock manufacturing division then developed into Eikosha Co. Ltd. in 1926. Photo 1 shows a wall clock manufactured in Eikosha Co. Ltd. Eikosha Co. Ltd. evacuated from Tokyo to Kiryu City, Gunma Prefecture in 1943 and got shut down in 1949. But forty-eight employees of Eikosha Co. Ltd. voluntarily established a joint venture company, Kiryu Eikosha Co. Ltd., to manufacture industrial equipment in the same year of closure. In 1951 Kiryu Eikosha Co. Ltd. made the best use of the technologies relating to clock gear mechanism in successfully manufacturing servo motors and synchronous motors in Japan, which led to firm establishment of the Company's foundation as a motor maker.

A 108km2 Compressive Sensing Processing Trial

2021 ◽  
Author(s):  
Dustin Blymyer ◽  
Klaas Koster ◽  
Graeme Warren
Keyword(s):  
Compressive Sensing ◽  
Surface Waves ◽  
Seismic Data ◽  
High Frequency ◽  
Quality Data ◽  
Low Velocity ◽  
Conventional Design ◽  
Seismic Acquisition ◽  
Similar Cost ◽  
Station Density

Abstract Summary Compressive sensing (CS) of seismic data is a new style of seismic acquisition whereby the data are recorded on a pseudorandom grid rather than along densely sampled lines in a conventional design. A CS design with a similar station density will generally yield better quality data at a similar cost compared to a conventional design, whereas a CS design with a lower station density will reduce costs while retaining quality. Previous authors (Mosher, 2014) have shown good results from CS surveys using proprietary methods for the design and processing. In this paper we show results obtained using commercially available services based on published algorithms (Lopez, 2016). This is a necessary requirement for adoption of CS by our industry. This report documents the results of a 108km2 CS acquisition and processing trial. The acquisition and processing were specifically designed to establish whether CS can be used for suppression of backscattered, low velocity, high frequency surface waves. We demonstrate that CS data can be reconstructed by a commercial contractor and that the suppression of backscattered surface waves is improved by using CS receiver gathers reconstructed to a dense shot grid. We also show that CS acquisition is a reliable alternative to conventional acquisition from which high-quality subsurface images can be formed.

Mastering the Highest Vibroseis Productivity While Preserving Seismic Data Quality

First Break ◽  
2022 ◽  
Vol 40 (1) ◽  
pp. 81-86
Author(s):  
Nicolas Tellier ◽  
Gilles Ollivrin ◽  
Stéphane Laroche ◽  
Christophe Donval
Keyword(s):  
Data Quality ◽  
Seismic Data
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