مرکز منطقه ای اطلاع رسانی علوم و فناوری مجله زمین شناسی نفت ایران 2251-8738 13 26 2024 12 30 Evaluation of Reservoir Quality of upper Dalan formation using Petrophysical data in one of the gas fields in southern Iran ارزیابی کیفیت مخزنی سازند دالان فوقانی با استفاده از داده‌های پتروفیزیکی در یکی از میادین گازی جنوب ایران 20 33 fa پریا زنده دل دانشگاه شیراز امیر کریمیان طرقبه دانشگاه شیراز و دانشگاه فردوسی مشهد 2024 9 1 <p class="MsoNormal" style="text-align: justify;"><span style="mso-ascii-font-family: Calibri; mso-fareast-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-font-kerning: 0pt; mso-ligatures: none;"><span style="mso-spacerun: yes;">&nbsp;</span></span><strong><span style="font-family: 'Times New Roman',serif; mso-fareast-font-family: Calibri; mso-font-kerning: 0pt; mso-ligatures: none; mso-bidi-language: FA;">Today, reservoir rock evaluation is very important in the oil industry. The ability of petrophysical evaluation is very important in determining reservoir zones and investigating them in petroleum geology. The studied gas field is one of the gas fields in the south of Iran in the Zagros sedimentary basin. In this research, using petrophysical data and porosity-permeability information of the cores and with the help of the possible evaluation method, the petrophysical parameters of the upper Dalan Formation were evaluated in two wells 4 and 6. The purpose of the research is to check the quality of the studied gas field and evaluate the reservoir properties using petrophysical studies. According to the results of this petrophysical evaluation, in the upper Dalan Formation in wells 4 and 6, the average shale volume is 1.7 and 2.4, respectively, the average water saturation is 30, 22.4, respectively, and the average effective porosity is 3.7 and 4.4, respectively. 6 and the ratio of useful thickness to total thickness is 0.68 and 0.92 respectively.The closer the value of this parameter is to 1, the studied formation has more reservoir quality.</span></strong> <strong><span style="font-family: 'Times New Roman',serif; mso-fareast-font-family: Calibri; mso-font-kerning: 0pt; mso-ligatures: none; mso-bidi-language: FA;">For a more detailed investigation, the upper Dalan formation in the studied field was divided into 3 zones (UD-3-UD-1) and UD-3 zone was divided into two sublayers (UD-3b-UD-3a). UD-2 zone with the dominant lithology of dolomite and some calcite, due to the volume of gas and greater porosity than other zones, was recognized as the best reservoir horizon.</span></strong> <strong><span style="font-family: 'Times New Roman',serif; mso-fareast-font-family: Calibri; mso-font-kerning: 0pt; mso-ligatures: none; mso-bidi-language: FA;">Such studies are used to increase production and EOR.</span></strong></p> <p><a name="_Hlk147441812"></a><a name="OLE_LINK42"></a><strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">امروزه ارزیابی سنگ مخزن </span></strong><strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">از اهمیت بسزایی در صنعت نفت برخوردار است. </span></strong><strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">توانایی ارزیابی پتروفیزیکی در</span> <span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">تعیین زون&zwnj;های مخزنی و بررسی آن&zwnj;ها در زمین شناسی نفت بسیار حائزاهمیت است.</span> <span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">میدان گازی مورد مطالعه یکی از&nbsp; میادین گازی جنوب ایران در حوضه رسوبی زاگرس است. در این پژوهش با استفاده از داده&zwnj;های پتروفیزیکی و اطلاعات تخلخل- نفوذپذیری مغزه ها و به کمک روش ارزیابی احتمالی پارامترهای پتروفیزیکی سازند دالان فوقانی در دو حلقه چاه 4 و 6</span> <span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">مورد ارزیابی قرار گرفتند. هدف از انجام پژوهش بررسی کیفیت میدان گازی مورد مطالعه و ارزیابی خواص مخزنی با بهره&zwnj;گیری از مطالعات پتروفیزیكی است.<a name="OLE_LINK6"></a> بر اساس نتایج این ارزیابی </span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">پتروفیزیکی</span><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">، </span><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">در سازند دالان فوقانی در چاه 4 و 6 میانگین حجم شیل به ترتیب 7/1 و 4/2 میانگین اشباع آب به ترتیب 30 ، 4/22 و میانگین تخلخل موثر به ترتیب 7/3 و 4/6 و نسبت</span></strong> <strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">ضخامت مفید به ضخامت کل</span></strong> <strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">به ترتیب 68/0 و 92/0 است. هرچه مقدار این پارامتر به عدد 1 نزدیک تر باشد سازند مورد مطالعه کیفیت مخزنی بیشتری دارد.</span></strong> <strong><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">این در نتیجه بالاتر بودن نسب</span> <span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">&nbsp;</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">&nbsp;NET/GROSS</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">و ویژگی&zwnj;های پتروفیزیکی به دست آمده برای این سازند و مقایسه آن با سایر سازندها بیانگر این نکته است که این سازند دارای بهترین کیفیت مخزنی و زون اصلی مخزنی در چاه مورد مطالعه می&zwnj;باشد</span><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">.</span></strong> <strong><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">جهت بررسی دقیق&zwnj;تر</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">،</span><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"> سازند دالان فوقانی در میدان مورد مطالعه به 3 زون</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;"> (</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">UD-3</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">-</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">UD-1</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">) </span><span dir="RTL" lang="AR-SA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">تقسیم&zwnj;بندی</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;"> گردید</span> <span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">و زون</span> <span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">&nbsp;UD-3 </span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">به دو زیرلایه (</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">UD-3b</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">-</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">UD-3a</span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">) تقسیم شد. زون</span><span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'B Lotus'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"> UD-2 </span><span dir="RTL" lang="FA" style="font-size: 11.0pt; line-height: 107%; font-family: 'B Lotus'; mso-ascii-font-family: Calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-font-family: Calibri; mso-hansi-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;">با سنگ&zwnj;شناسی غالب دولومیت و مقداری کلسیت، به علت حجم گاز و تخلخل بیشتر نسبت به سایر زون&zwnj;ها، <a name="_Hlk157029020"></a>به&zwnj;عنوان بهترین افق مخزنی تشخیص داده شد. این گونه مطالعات در افزایش تولید و ازدیاد برداشت مورد استفاده قرار می گیرد.</span></strong></p> http://journal.ispg.ir/ar/Article/Download/47842