The Rhum Field contains high pressure and high temperature (HPHT) dry gas in late Jurassic thinly-bedded turbidite sands. The sands are informally named as the Rhum Sand and belong to the J74 to J62 sequences. The field has only three well control points: 3/29 – 1, 3/29 – 2 and 3/29a – 4. 3/29 – 1 encountered sands below Cretaceous mudstones that are of inferred late Jurassic age but cannot be dated conclusively. The well took a gas kick, was not logged across the reservoir, and was terminated 3 metres into the sand. In 3/29 – 2 the entire 148-metre gross thickness Rhum Sand reservoir was gas-bearing. The well was not tested because suitable HPHT test equipment was not developed at the time of drilling (1977). Only two valid Repeat Formation Tester (RFT) pressure points were obtained. A single 14-metre core was cut in a thinly-interbedded sand interval. A basic gamma ray-density-resistivity-sonic log suite was obtained. Core indicated that the reservoir was a thinly-bedded turbidite sequence. 3/29a – 4, drilled in 2000, encountered 191 metres of gross Rhum reservoir, drilled through a gas-water contact, and was successfully tested. 93 metres of core were cut, out of 191 metres of reservoir (nearly half the entire reservoir sequence). In order to resolve and quantify reservoir quality in the thinly-bedded sequence, a comprehensive suite of log and pressure data was acquired.
DETALLES
Name:
Rhum Field - Rhum petrophysical reservoir evaluation.
Author: Simon Kay.
Capacity disk: 3.5 MB
Publisher: British Petroleum.
Languaje: English
Password : www.oilerhouse.blogspot.com
No comments:
Post a Comment