摘要
杨武寨构造带存在沙一下亚段特殊岩性和沙三段暗色泥岩两套主力烃源岩,它们生成的原油物理性质差别较大。杨武寨构造带断层极为发育,油气运移通道畅通,不同类型原油在上部地层交叉成藏,使得依据层位建立油气层评价标准的传统解释方法出现较大偏差。通过对本区油层类型进行分析,总结油水层响应特征,依据岩石热解气相色谱资料中的Ph/nC18、Pr/Ph参数将本区原油划分为低植烷型、植烷优势型和高植烷型三种类型,在此基础上建立起不同类型油水层解释评价标准。2018年以来应用该技术对15口井进行了评价,解释符合率达到81.25%,取得了较为理想的效果。
There are two sets of main source rocks in the Yangwuzhai structural belt:the special lithology of lower Sha-1 Member and the dark mudstone of Sha-3 Member,and the physical properties of the crude oil generated by them are quite different.In the Yangwuzhai structural belt,the faults are well developed,the oil and gas migration channels are smooth,the cross accumulation of different types of crude oil in the upper strata makes the traditional interpretation method appear bigger deviation,which establishes the evaluation criteria of oil and gas layers by the horizons.Based on the analysis of oil layer types in this area,the response characteristics of oil and water bearing zones are summarized.According to parameters Ph/nC18 and Pr/Ph in rock pyrolysis gas chromatography data,the crude oil in this area is divided into three types:low phytane,dominant phytane and high phytane.On this basis,the interpretation and evaluation criteria of different types of oil and water bearing zones are established.Since 2018,15 wells have been evaluated with this technique,and the coincidence rate of interpretation has reached 81.25%,and good effects have been obtained.
作者
宋义民
王灿丹婷
姜勇
孙红华
徐婕
乔德民
郭素杰
刘玥
SONG Yimin;WANG Candanting;JIANG Yong;SUN Honghua;XU Jie;QIAO Demin;GUO Sujie;LIU Yue(No.2 Mud Logging Company, BHDC, CNPC, Renqiu, Hebei 062552, China)
出处
《录井工程》
2021年第2期62-69,共8页
Mud Logging Engineering
基金
中国石油华北油田公司“2018年冀中探区重点区带录井精准评价技术研究”子课题“饶阳凹陷录井油气层解释方法深化研究与完善”(编号:HBYT-2017-JS-372)。
关键词
杨武寨
岩石热解气相色谱
气测
低植烷型原油
植烷优势型原油
高植烷型原油
油层识别
Yangwuzhai
rock pyrolysis gas chromatography
gas logging
low phytane crude oil
phytane dominant crude oil
high phytane crude oil
oil layer identification
