摘要
川西雷口坡组碳酸盐岩气藏具有较好的勘探开发潜力,是天然气增储上产的重点领域。孔隙度是雷口坡组储层评价的重要参数之一,但钻进过程中难以直接获取,制约了随钻解释评价的开展。通过研究分析地层溶蚀程度对孔隙度的影响,基于元素录井资料,按照不同溶蚀程度分别建立了无溶蚀、部分溶蚀、溶蚀地层的孔隙度计算模型,并最终形成川西雷口坡组随钻孔隙度计算方法。现场10余口井应用表明,该方法计算结果能够为随钻解释评价提供有力支撑,为川西地区雷口坡组的地层评价提供依据。
The carbonate gas reservoir of Leikoupo Formation in western Sichuan has good potential for exploration and development,making it a key area for increasing natural gas reserves and production.Porosity is one of the important parameters for reservoir evaluation in the Leikoupo Formation,but it is difficult to obtain directly during drilling,which restricts the development of real-time interpretation and evaluation.Through research,the impact of different degrees of dissolution on porosity is analyzed.Based on elemental logging data,porosity calculation models are established based on the degree of dissolution,specifically for formations with no dissolution,partial dissolution,and full dissolution.Ultimately,a method for real-time porosity calculation while drilling in the Leikoupo Formation of western Sichuan is developed.Field applications in over 10 wells have demonstrated the effectiveness of this method.The calculation results provide robust support for real-time interpretation and evaluation,offering a basis for formation evaluation of the Leikoupo Formation in western Sichuan.
作者
王崇敬
梁波
唐诚
顾炎午
宋飞鹏
袁艳丽
WANG Chongjing;LIANG Bo;TANG Cheng;GU Yanwu;SONG Feipeng;YUAN Yanli(Southwest Geosteering&Logging Company,Sinopec Matrix Corporation,Chengdu,Sichuan 610100,China;Sinopec Key Laboratory of Well Logging,Chengdu,Sichuan 610100,China)
出处
《录井工程》
2025年第4期77-82,共6页
Mud Logging Engineering
基金
中石化科技部项目“川西海相岩溶储层录井精细评价方法研究”(编号:JP18036)
中石化经纬有限公司项目“复杂储层综合评价”(编号:JWKY2115)。
关键词
孔隙度
计算模型
元素录井
地层溶蚀
岩石密度
雷口坡组
porosity
calculation model
element logging
stratum dissolution
rock density
Leikoupo Formation
