断控型缝洞气藏酸压规模与无阻流量的关系研究  

The Relationship Study Between Acid-fracturing Scale and Open-flow Capacityin Fault-controlled Gas Reservoirs

作　　者：王龙[1,2] 万小勇[1,2] 林仁奎 李冬梅[2] 徐燕东 朱苏阳[4] WANG Long;WAN Xiaoyong;LIN Renkui;LI Dongmei;XU Yandong;ZHU Suyang(Key Laboratory of Enhanced Oil Recovery from Carbonate Fracture-cavity Reservoirs,Sinopec,Urumqi,Xinjiang 830400,China;Petroleum Engineering Research Institute,Northwest Oilfield Company,Sinopec,Urumqi,Xinjiang 830400,China;Development Division,PetroChina Southwest Oil and Gasfield Company,Chengdu,Sichuan 610050,China;School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]中国石油化工集团公司碳酸盐岩缝洞型油藏提高采收率重点实验室 [2]中国石油化工股份有限公司西北油田分公司 [3]中国石油西南油气田公司开发事业部 [4]西南石油大学石油与天然气工程学院

出　　处：《钻采工艺》2024年第5期172-178,共7页Drilling & Production Technology

基　　金：中国石化科技攻关项目“特深层完井测试与储层改造技术”(编号:P21081-3);中国石化缝洞型油藏提高采收率重点实验室2022年度开放基金“缝洞油藏动态储量关键参数方法优选及其主控因素研究”(编号:34400000-22-ZC0607-0008)。

摘　　要：顺北二区发育典型的超深断控型缝洞储集体,由于钻井过程泥浆漏失量大,通常选择酸压或是酸洗完井作为解堵增产措施。为了研究酸液用量和酸压规模对无阻流量的影响,研究基于顺北二区地质特征,建立了钻遇裂缝(漏失井)和未钻遇裂缝两种情况的数值模型,利用裂缝扩展—气藏数值模拟方法,对两种情况井的酸压缝形态进行了模拟,进一步模拟了两种地质条件和不同酸压规模下的气井早期无阻流量,并用现场数据进行了反演验证。对比结果发现,当气井钻遇裂缝带时,酸压可以提高气井无阻流量,但幅度不大,酸压的规模不宜过大;当气井未钻遇裂缝带时,酸压则可以明确大幅度提高气井无阻流量和控制储量。The typical ultra-deep fault controlled fractured cave reservoir in 2 nd Shunbei Block has been developed.Due to the large amount of mud loss during drilling,acid fracturing and washing completion are usually chosen to remove blockages and stimulate production.In order to study the effects of acid fluid dosage and acid fracturing scale on gas production capacity,numerical models were established based on the geological characteristics of 2 nd Shunbei Block for drilling encountered fractures(leaking wells)and non-drilling encountered fractures.The fracture propagation gas reservoir numerical simulation method was used to simulate the acid fracturing fracture morphology of the two wells,further simulating the early production capacity of gas wells under two geological conditions and different acid fracturing scales,and conducting inversion verification with on-site data.The comparison results show that when a gas well encounters a fractured zone during drilling,acid fracturing can increase the production capacity of the gas well,but the amplitude is not significant.The scale of acid fracturing should not be too large;When a gas well does not encounter a fractured zone during drilling,acid fracturing can significantly increase the production capacity and control reserves of the gas well.

关 键 词：断控型 气藏 漏失井 数值模拟 反演统计 

分 类 号：TE377[石油与天然气工程—油气田开发工程]