利用物质平衡法评价剩余天然气储量,规划气田开发

D. Ratnaningsih, A. M. Suranto, Cahyadi Julianto
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引用次数: 0

摘要

“CJ”气田位于南苏门答腊盆地,储层位于玄武岩Telisa石灰岩(BTL)地层。该气田由GTA-1井、GTA-2井和GTA-3井组成,于1951 - 1991年生产。1991年,由于买家的要求,这三口井被暂停,并将于2021年重新开放10年。所使用的研究方法是收集包括储层、产量和天然气物性数据在内的数据。下一步是计算不同压力下储层体积因子和z因子的值。接下来,使用科尔图方法确定驱动机构的类型。在了解驱动机构类型后,可以使用物料平衡法确定当前OGIP值。如果OGIP值已知,则下一个计算是恢复因子(RF)、最终恢复(UR),最后是剩余储备(RR)的值。经计算,采用P / Z / GP图的物质平衡法得到的当前OGIP值为83.46 BSCF,采收率为80.223%,最终采收率为66.96 BSCF,剩余气储量为15.45 BSCF。根据这些结果,可以开采到地面10年的最大储量为4.2325 MMSCFD。因此,“CJ”油田能够在10年内每天供应4.2325 MMSCFD或低于4.2325 MMSCFD的天然气。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Remaining Gas Reserves Using the Material Balance Method for Planning Gas Field Development
The “CJ” field is a gas field located in the South Sumatra Basin with a reservoir located in the Basalt Telisa Limestone (BTL) formation. This gas field consists of 3 wells namely Well GTA-1, GTA-2, and GTA-3 which produced from 1951 to 1991. In 1991 the three wells were suspended and will be reopened in 2021 due to requests from buyers for 10 years. The research method used is to collect data consisting of data on reservoir, production, and physical properties of the gas. The next step is to calculate the value of the gas formation volume factor and Z-factor with various pressures. Next, determine the type of drive mechanism using the Cole Plot method. After knowing the type of drive mechanism, you can determine the current OGIP value using the material balance method. If the OGIP value is known, the next calculation is the Recovery Factor (RF), Ultimate Recovery (UR) and finally the value of Remaining Reserve (RR). Based on the calculation, the current OGIP value obtained by the material balance method with P / Z vs GP plots is 83.46 BSCF, Recovery Factor of 80.223%, Ultimate Recovery of 66.96 BSCF, and remaining gas reserve 15.45 BSCF. From these results, the maximum reserve value that can be produced to the surface for 10 years is 4.2325 MMSCFD. So that "CJ" Field is able to supply gas every day of 4.2325 MMSCFD or less than 4.2325 MMSCFD for 10 years.
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