An acid-placement model for long horizontal wells in carbonate reservoirs

Varun Mishra*, D. Zhu, A. D. Hill, K. Furui

*この研究の対応する著者

研究成果: Conference contribution

27 被引用数 (Scopus)

抄録

In several places around the world, notably the North Sea and the Middle East, carbonate reservoirs are being accessed with very long horizontal wells (2000 to 20,000 feet of reservoir section.) These wells are often acid stimulated to remove drilling fluid filter cakes and to overcome formation damage effects, or to create acid fractures or deep matrix stimulation to enhance productivity. Good acid coverage with a relatively small acid volume is required to economically obtain the desired broad reservoir access. We have developed a model to predict the placement of injected acid in a long horizontal well, and to predict the subsequent effect of the acid in creating wormholes, overcoming damage effects, and stimulating productivity. The model tracks the interface between the acid and the completion fluid in the wellbore, models transient flow in the reservoir during acid injection, considers frictional effects in the tubulare, and predicts the depth of penetration of acid as a function of the acid volume and injection rate at all locations along the completion. We have used this model to simulate treatments that are typical of those performed in the North Sea and in the Middle East. We present a hypothetical example of acid placement in a long horizontal section and an example of using the model to history match actual treatment data from a North Sea chalk well.

本文言語English
ホスト出版物のタイトルSociety of Petroleum Engineers, 7th European Formation Damage Conference 2007 - Pushing Technology Boundaries
ホスト出版物のサブタイトルRejuvenating Fields and Skills
出版社Society of Petroleum Engineers (SPE)
ページ727-735
ページ数9
ISBN(印刷版)1604231858, 9781604231854
DOI
出版ステータスPublished - 2007
外部発表はい
イベントSociety of Petroleum Engineers, 7th European Formation Damage Conference 2007 - Pushing Technology Boundaries: Rejuvenating Fields and Skills - Scheveningen, Netherlands
継続期間: 2007 5月 302007 6月 1

出版物シリーズ

名前SPE - European Formation Damage Conference, Proceedings, EFDC
2

Other

OtherSociety of Petroleum Engineers, 7th European Formation Damage Conference 2007 - Pushing Technology Boundaries: Rejuvenating Fields and Skills
国/地域Netherlands
CityScheveningen
Period07/5/3007/6/1

ASJC Scopus subject areas

  • 工学一般

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