Reservoir rock properties of the Arun limestone (Miocene), Arun field, North Sumatra, Indonesia /
(0.1<k<10 md, 6<[]<20 %) is associated with separate vug
| Main Author: | |
|---|---|
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
|
| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (0.1<k<10 md, 6<[]<20 %) is associated with separate vug (2.27 to 2.49 gr/cm3 and 14 to 35 API). Three geological (k>10 md, []>20 %) is associated with grainmoldic (GM), (VS) and GM in the packstones or wackstones, and IX and VS (VT, VS, GM and DC) were formed, transforming the Arun 438 feet of core from three wells, the A02, A42, and the A54, boundstones, (2) bioclastic and large benthic foram buildup. Sea-level rise allowed thick accumulation of buildup. Better reservoir quality is marked by lower bulk calcite or anhydrite, and allowed dissolution in the carbonate buildup into an economically important hydrocarbon carbonate buildup: (1) coral and coral encrusting-red algae Carbonate buildups in the Arun limestone, North Sumatra, carbonate sediments, and the following sea-level fall density value and lower gamma-ray value. Dolomitized rocks during Lower Oligocene provided the foundation for carbonate during Lower to Middle Miocene affected the reservoir quality factors: sea-level change, paleoclimate, and tectonic setting gamma-ray values (37 to 40 API) than non-dolomitized rocks have poor to very poor quality (k<l md, []<13 %). The in the boundstones. Dolomitized rocks with no visible pores Indonesia, accumulated along the middle shelf margin of the invariably have higher bulk density (2.7 gr/cm3) and higher meteoric-phreatic diagenetic environment. As a result of North Sumatra basin. Three major rock types formed the Arun of the Arun buildup. Uplift of the North Sumatra basin packstones, and (3) bioclastic and large benthic foram permeability is 27 md. Good to very good reservoir quality prevented the development of pore plugging cementation by quality increases toward the top and the center of the reservoir. reveals that the average porosity is 18 % and the average stranded and exposed the buildup to pore-forming diagenesis. the packstones and boundstones. Intermediate to poor quality these combined factors, predominantly diagenetic pore types touching vug (VT), and intercrystalline (IX) pore types in Tropical-subtropical setting of the Miocene paleoclimate wackstones. Minor dolomitized rocks are present. Study of |
|---|---|
| Item Description: | "Major subject: Geology". Vita. |
| Physical Description: | xii, 112 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |