Relation entre lithologie, diagraphie sonique et caractéristiques géotechniques,des grès cambriens, réservoirs d’hydrocarbures, du champ de Hassi Messaoud

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

L’exploration pétrolière au niveau du champ de Hassi Messaoud trouve un intérêt particulier à adapter des méthodes plus rentables pour une meilleure exploitation des réservoirs d’hydrocarbures grâce aux forages horizontaux. Ces moyens de production engendrent des déséquilibres aux fonds des puits, soulignés par une déplétion de la pression de production, l’envahissement du puits par la venue du sable et l’effondrement des réservoirs. Des corrélations établies entre les caractéristiques géotechniques, soniques et pétrophysiques, ont permis de dégager des relations qui présentent l’intérêt de pouvoir déterminer la résistance à la compression de la roche (paramètre fondamental en géotechnique, en particulier lors des forages horizontaux, à partir des mesures in-situ (diagraphie sonique) et d’une manière instantanée de leur vitesse d’onde sonique et des paramètres physiques (porosité)). Ces corrélations contribuent à l'approche d’un modèle géo mécanique propre au champ de HMD ou du moins aux réservoirs d’hydrocarbures ayant des caractéristiques soniques semblables.

روابط وملفات

التعريف والنوع

رقم الوثيقة

049e5cd4-0092-4cc2-80ac-d5b891feecfa

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

word

أسماء الملفات

1379980_1.docx, 1379980_2.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"R. Bougdal","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Yamina DahirI","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

French

المصدر والدورية

اسم المصدر

Relation entre lithologie, diagraphie sonique et caractéristiques géotechniques,des grès cambriens, réservoirs d’hydrocarbures, du champ de Hassi Messaoud

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

The oil exploration at the level of the field of Hassi Messaoud finds an interest particular to adapt more profitable methods for a better exploitation of the reservoirs of hydrocarbons thanks to the horizontal drillings. However, these means of production engender imbalance in the funds of wells, underlined by a depletion of the pressure of production, the invasion of the well by the coming of the sand and the collapse of reservoirs. Correlations enter the lithology nature, the data of sound logging and the geotechnical characteristics of rocks reservoirs of hydrocarbons, are then established, to result at a geo mechanical model appropriate for the geological, geotechnical conditions and diagraphics of the field of HMD. The study is elaborated on the basis of a bibliographical synthesis of the geological works elaborated at the level of the field of Hassi Messaoud, including the sector of study, showing as well as the Cambrian reservoir (R1 and R2) is essentially sandy, very complex on the lithologic and structural plan. The pétrographic aspect, showed that the rock reservoir is averagely porous at the level of the reservoir R1 and few to averagely porous in R2. It essentially consists of quartz, often cracked, in right contact, stitched or floating, in intrusions of zircon and of tourmaline, with some secondary minerals such as the muscovite often in state of change. The phase of connection is assured by the silica, the clay or the calcite. Several mechanisms of deformation, influencing the mechanical behavior of the rock, are controlled by pétrophysics parameters and mechanical (porosity, cementation, field of constraint, rate of clay and the temperature). The microscopic analysis allowed to distinguish slidings and rotations of grains, the fracturing intragranular, the fracturing transgranular, and the pressure-solution. The diagraphique answer based on the elastic analysis of the parameters, showed that the static mechanical characteristics are a function of pétrophysics properties in particular the cement and the porosity on one hand, the size, the contact and the arrangement of grains on the other hand (texture, structure). The geotechnical characteristics of rocks reservoirs vary according to the anisotropie bound to the structure, the texture, the mineralogical composition, the cementation, the porosity and the fissuring. The correlations between the geotechnical and sound characteristics, allowed to emit the relation which exists between the physico-mechanical properties and the sound parameters. These linear equations, present an interest to be able to determine the simple compression resistance ' RCS ' (fundamental parameter in geotechnics, in particular during the horizontal drillings, from the measures in - situ ( sound logging) and in a immediate way of their speed of sound wave and the physical parameters (porosity)). These correlations contribute at the approach of a geomechanical model appropriate for the field of HMD or at least for the reservoirs of hydrocarbons having similar sound characteristics.

كلمات الباحثين

Réservoirs d'hydrocarbures, Roches réservoirs, Roches

إشراف وإعداد

الإشراف

R. Bougdal

الإعداد

Yamina DahirI

الاقتباسات الببليوغرافية