توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Feasibility Study of Using Perforation Inflow Test Analysis to Estimate Reservoir Parameters
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنگره ملی کاوش نفت و گاز - تولید صیانتی، سال
تعداد صفحات: ۱۱
Conventional well tests cause production lost in their relatively long duration, especially in low permeability reservoirs, where receiving infinite acting response might require too much time. In this paper, after a brief review of a new well testing method called Perforation Inflow Test, a case study is presented to demonstrate both time saving and accuracy of one such test. An attempt is made to estimate key parameters of a deep, low permeability and over pressured gas reservoir through analyzing its pressure response, after perforating it in underbalanced conditions. Due to low permeability of the reservoir, late time pressure response was not received and the test was terminated in the transition from early time to late time. Hence, initial estimates of permeability, skin and pressure were not necessarily correct. To overcome this problem, pressure modeling was used to history match the modelgenerated pressure with the actual pressure. At the end, the results of a consequent conventional build up test are compared to the PITA results. As will be detailed in the paper, the results of build up test are in good agreement with the PITA results which nominates PITA as a precious method for obtaining key reservoir parameters, reducing both time and cost.<\div>

۲Feasibility Study of Using Perforation Inflow Test Analysis to Estimate Reservoir Parameters
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنگره ملی کاوش نفت و گاز - تولید صیانتی، سال
تعداد صفحات: ۱۱
Conventional well tests cause production lost in their relatively long duration, especially in low permeability reservoirs, where receiving infinite acting response might require too much time. In this paper, after a brief review of a new well testing method called Perforation Inflow Test, a case study is presented to demonstrate both time saving and accuracy of one such test. An attempt is made to estimate key parameters of a deep, low permeability and over pressured gas reservoir through analyzing its pressure response, after perforating it in underbalanced conditions. Due to low permeability of the reservoir, late time pressure response was not received and the test was terminated in the transition from early time to late time. Hence, initial estimates of permeability, skin and pressure were not necessarily correct. To overcome this problem, pressure modeling was used to history match the modelgenerated pressure with the actual pressure. At the end, the results of a consequent conventional build up test are compared to the PITA results. As will be detailed in the paper, the results of build up test are in good agreement with the PITA results which nominates PITA as a precious method for obtaining key reservoir parameters, reducing both time and cost.<\div>

۳Parametric Study of Condensate Buildup in a Naturally Fractured Gas Condensate Reservoir
نویسنده(ها): ،
اطلاعات انتشار: اولین کنگره ملی کاوش نفت و گاز - تولید صیانتی، سال
تعداد صفحات: ۱۵
The main difficulty usually encountered in gascondensate reservoirs is the loss of valuable condensed liquid in the reservoir due to capillary forces, a phenomenon called condensate blockage. The presence of condensates when coupled with the complexity of fluid flow in fractured reservoirs, can increasingly obscure the expected performance of such reservoirs. A thorough understanding of the factors leading to condensate buildup in fractured reservoirs is crucial for deciding a proper strategy to exploit such reservoirs. In this paper, a compositional model is used to predict and physically justify the singlewell performance of a naturally fractured gascondensate reservoir by altering different reservoir properties and production schemes. The current study reveals the important role of capillary pressure in trapping condensates, especially in highly fractured reservoirs where the effect of gravity drainage is minimized. Higher matrix block sizes can reduce the amount of trapped liquid. However, high critical condensate saturation can dampen the effect to some extent. Pore size uniformity is another important factor that causes less condensate buildup due to less capillary pressure. Higher production rates result in earlier condensate dropout peak. The peak is lower for higher rates, a phenomenon attributed to velocity stripping. Furthermore, the effect of gas and liquid diffusion is the most crucial in tighter matrices and can significantly reduce the trapped condensates.<\div>
نمایش نتایج ۱ تا ۳ از میان ۳ نتیجه