Exploratory Well Hits Target Successfully on the 8th Attempts in the Binak Oilfield, North of Persian Gulf
Notice bibliographique
Résumé
Abstract In the Binak oilfield, located in the north of the "Persian Gulf", seven exploratory wells were attempted to drill to the target, which is the Khami reservoir at a depth of 5600 m. Due to special conditions and problems, drilling through the formations in this oilfield was unsuccessful. The main drilling challenges include selecting correct casing depth, borehole instability due to shale sloughing and severe fluid loss and flow during drilling. These problems resulted in the unsuccessful drilling of seven exploratory wells. Therefore, the following factors were considered in designing the new exploratory well number eight.Proper selection of drilling fluids for the different hole sections by performing fluid absorption experiments on shale samples.New design of the casing and liner string.Setting casing at the right depths.Correct selection of mud weight in order to minimize severe loss and flow.Precise determination and cure of loss zones.Minimize shale sloughing by increasing mud weight This paper shares and discusses the experience of NIOC (National Iranian Oil Company) in drilling the 8th exploratory well. It covers the successful well design as well as the methods and procedures adapted to drill this 8th well. Introduction The Binak oilfield is located in the north of the Persian Gulf and was discovered in 1957. This oilfield is surrounded by other oilfields such as Bibi-Hakimeh, Rag-E-Sefid, Hendijan, Bahregan SAR, and Golkhari which is shown in Figure 1. The Binak oilfield formations are the Agha Jari, Mishan, Asmari, Pabdeh, Gurpi, Bnagestan group formations, the Kazhdumi and the Khami group formations. Table 1 shows a brief description of the formations in Binak oilfield. The present path in the drilling industry is to drill more complex wells in as cost effective way as possible. Therfore, well planning and drilling operation has to continuously improve. All technical information related to drilling wells should be considered in the well design. Major considerations must be taken for both safety and economic reasons. Two of the main considerations are that the well is drilled with an optimum mud weight and proper casing setting depth. Factors such as shale layers and abnormal/subnormal pressure formations can also greatly affect the well design.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».