利用直井、导眼井和水平井确定水平井钻遇有效厚度——以L油田C区块为例  

Determining the drilled net pay thickness of horizontal well by using the data of vertical well,pilot well and horizontal well:Take C Block of L Oilfield as an example

作　　者：张豆娟 郭海敏[1] 张奎华[3] 傅爱兵[2] 肖丽 陈存元 ZHANG Doujuan;GUO Haimin;ZHANG Kuihua;FU Aibing;XIAO Li;CHEN Cunyuan(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,Hubei;Research Institute of Exploration and Development,Shengli Oilfield Company,SINOPEC,Dongying 257015,Shandong;Manage Center of Oil and Gas Exploration,Shengli Oilfield Company,SINOPEC,Dongying 257001,Shandong;Shengli Geologging Company,Sinopec Matrix Corporation,Dongying 257000,Shandong)

机构地区：[1]长江大学地球物理与石油资源学院,湖北武汉430100 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [3]中国石化胜利油田分公司油气勘探管理中心,山东东营257001 [4]中国石化经纬有限公司胜利地质录井公司,山东东营257000

出　　处：《长江大学学报（自然科学版）》2024年第6期68-78,共11页Journal of Yangtze University(Natural Science Edition)

基　　金：中国石油化工股份有限公司科技攻关项目“埕岛垦东构造带中生界成储成藏及目标评价”(P23081)。

摘　　要：关于水平井钻遇位置的有效厚度如何合理确定,目前还没有很好的解决办法。因此探讨如何综合利用直井、导眼井以及水平井资料确定水平井钻遇位置有效厚度的问题十分必要。首先结合区块内直井、导眼井和水平井的资料综合建立相对比较完善的有效厚度标准,依据试油、试采、有效厚度标准、测录井资料、地层对比以及井所处的构造位置综合识别直井、导眼井和水平井的油层。然后由直井、导眼井资料综合确定单井有效厚度和目的层段的平均净毛比。对于井轨迹基本顺构造线的水平井,根据测井解释油层段、井斜、方位计算出油层段钻遇的垂直厚度,将钻遇垂直厚度乘以目的层段的平均净毛比计算水平井钻遇位置的有效厚度。最后综合井轨迹基本顺构造线的水平井钻遇位置的有效厚度和直井、导眼井的有效厚度来绘制储量计算单元的有效厚度等值图,其中水平井钻遇位置的有效厚度对于直井井控较差的储量计算单元的有效厚度等值图绘制具有重要参考价值。At present,there is no good solution to determine the net pay thickness of the reservoir in the drilling position of horizontal wells.This paper discusses how to determine the drilling net pay thickness of horizontal wells by using the data of vertical wells,pilot wells and horizontal wells.Firstly,a relatively perfect net pay thickness standard is comprehensively established by combining the data of vertical wells,pilot wells and horizontal wells in the block,and then the oil layers of vertical wells,pilot wells and horizontal wells are comprehensively identified according to the oil test,production test,net pay thickness standard,well and mud logging data,formation correlation and the structural position of the wells.Secondly,the net pay thickness of a single well and the average net gross ratio of the target zone are determined comprehensively from the data of vertical wells and pilot wells.For the horizontal well whose well trajectory along the structural line,the vertical thickness of the drilling oil interval is calculated according to the interpretation of the oil interval,well deviation and azimuth,and the vertical thickness is multiplied by the average net gross ratio of the target interval to calculate the net pay thickness of the horizontal well.Finally,vertical wells,pilot wells and the vertical net pay thickness of the horizontal well with well trajectory approximately along the structural line,which can participate in the drawing of net pay thickness contour map of the reserve calculation unit,and it is a relatively good reference for the unit net pay thickness determination of the area with poor vertical well control.

关 键 词：水平井 随钻资料 自然伽马相对值 全烃相对值 钻遇有效厚度 

分 类 号：P618.13[天文地球—矿床学] TE132.14[天文地球—地质学]