في عالم استكشاف النفط والغاز، غالباً ما يظهر مصطلح "h"، وهو يشير إلى معلمة أساسية تُعرف باسم **السمك** أو **ارتفاع المدى**. وعلى الرغم من بساطة ظهوره، فإن هذه القيمة تحمل أهمية كبيرة في تحديد جدوى خزان من الناحية الاقتصادية وإمكانية استخلاص النفط في نهاية المطاف.
**ما هو السمك (أو ارتفاع المدى)؟**
ببساطة، "h" تمثل المسافة الرأسية بين أعلى وأسفل طبقة خزان تحتوي على الهيدروكربونات. إنها في الأساس "سمك" الصخور الحاملة للنفط أو الغاز، ويُقاس بالأقدام أو الأمتار.
**لماذا يعد السمك مهمًا؟**
**العوامل التي تؤثر على السمك:**
**تقنيات القياس:**
**الخلاصة:**
"h" (السمك أو ارتفاع المدى) هي معلمة أساسية في استكشاف وإنتاج النفط والغاز. تكمن أهميتها في ارتباطها المباشر بحجم الخزان وسعة التدفق، وبالتالي الجدوى الاقتصادية للمشروع. يساعد فهم هذه القيمة الأساسية الجيولوجيين والمهندسين على اتخاذ قرارات مستنيرة بشأن استراتيجيات الاستكشاف والتطوير والإنتاج.
Instructions: Choose the best answer for each question.
1. What does "h" represent in oil and gas exploration?
(a) The horizontal distance between two wells (b) The vertical distance between the top and bottom of a reservoir layer (c) The pressure inside the reservoir (d) The amount of oil or gas in the reservoir
(b) The vertical distance between the top and bottom of a reservoir layer
2. Why is a larger "h" value generally desirable in oil and gas exploration?
(a) It indicates a higher pressure inside the reservoir. (b) It suggests the presence of a more complex geological structure. (c) It means a larger volume of reservoir rock, potentially holding more hydrocarbons. (d) It indicates a faster flow rate of hydrocarbons to the wellbore.
(c) It means a larger volume of reservoir rock, potentially holding more hydrocarbons.
3. Which of the following factors can affect the thickness of a reservoir layer?
(a) Erosion (b) Geological formation (c) Structural traps (d) All of the above
(d) All of the above
4. Which method is used to map subsurface rock layers and provide an initial estimation of reservoir thickness?
(a) Well logging (b) Core analysis (c) Seismic surveys (d) Petrophysical analysis
(c) Seismic surveys
5. How does "h" relate to the economic viability of an oil and gas project?
(a) A larger "h" value always leads to higher profits. (b) A thin reservoir might not be profitable to develop due to limited reserves and high drilling costs. (c) "h" has no influence on the economic viability of a project. (d) "h" only influences the production rate, not the profitability.
(b) A thin reservoir might not be profitable to develop due to limited reserves and high drilling costs.
Scenario:
You are an exploration geologist analyzing data from a potential oil reservoir. Seismic surveys indicate a possible reservoir layer with a top depth of 2,500 meters and a bottom depth of 2,650 meters.
Task:
Calculate the "h" value (thickness or pay height) of this potential reservoir.
The "h" value is calculated as the difference between the top and bottom depths of the reservoir layer: h = Bottom Depth - Top Depth h = 2,650 meters - 2,500 meters h = 150 meters Therefore, the thickness or pay height of the potential reservoir is 150 meters.