·18 ·when christmas comes to town
石 油 仪 器 2003 年 04 月
·仪器设备·
岩心地面伽马测试系统及其
在岩心归位中的应用
王艳琴 杨富周 安明泉 付文利 王志强
(东营 石油大学石油资源科学系)
王艳琴 ，杨富周 ，安明泉 ，付文利 ，王志强. 岩心地面伽马测试系统及其在岩心归位中的应用. 石油仪器 ,2003 ,17( 2) :18 ～19 摘
要 文章介绍了系统结构及伽马测试 、岩心归位 、样品深度校正等 。应用岩心地面自然伽马曲线与测井自
然伽马曲线对比法对岩心进行归位 ，进而对岩心样品进行深度校正 ，在很大程度上提高了岩心资料的准
确性 。
关 键 词 伽马测试系统 岩心 自然伽马曲线 岩心归位 样品深度校正
作者介绍 王艳琴 助理工程师 ,1974 年生 ,1998 年毕业于中国地质大学 (武汉) 油藏工程专业 ，目前在胜利油田地
质科学研究院岩心室从事岩心综合研究工作 ，并为石油大学 (华东) 2000 级在读硕士研究生 。邮编 :257015
引 言
岩心资料是油气田勘探开发中获取地下地质信
息的第一手资料 ，岩心资料准确与否直接影响到科
train
研工作 。岩心地面伽马测试技术是近年来针对岩心 资料的再利用和深入研究而发展起来的测试技术 , 其原理与测井中自然伽马测量原理基本相似 ，即测 量岩石中自然伽马射线强度[ 1 ] 。利用此技术对岩心 进行伽马测试分析 ，为科研人员提供准确的岩心资 料 。 系统结构[ 2 ]
岩心地面伽马测试系统
(CGR ) 是一种用于对岩 心进行连续伽马射线总强度测量的专用系统 。CGR
系统由硬件系统和应用软件系统组成 。硬件系统主
要由计算机 、绘图打印机 、闪烁计数器
(伽马探头) 、 深度传感器 、电机及标准刻度器等附件组成 。岩心 地面伽马测量系统原理结构图如图 1 所示 。 伽马测试
在测试前应对岩心进行检查整理 ，对同一筒次
的岩心按照从顶到底的顺序找准位置 , 卡准长度 。 将整理好的岩心按顺序连续放在岩心地面伽马测量
仪的传送带上 ，传送带相对匀速运动通过伽马探头 ,
探头对岩心进行连续测量 ，经过 CGR 软件的分析与
peerpressure
计算 ，最终得到岩心地面伽马强度 (API ) 曲线 。
电影英文岩心地面伽马强度
(API ) 曲线与测井自然伽马 强度曲线相似 ，可用于岩心泥质含量分析 、岩性判别 等 ，并且二者可以对比进行岩心归位 。
图 1 岩心地面伽马测量系统原理结构图
岩心归位
岩心归位是指将钻井所取岩心的钻井深度统一 归在某一标准深度上 ，目前科研工作所用的标准深 度一般是指测井深度[ 3 ] 。
目前主要是采用岩性与电性的对应关系将岩心 统一归在测井曲线上
，该方法较为繁琐 ，且受人为因 素影响较大 ，准确度相对较差 。岩心地面自然伽马 归位是将岩心进行地面自然伽马测试 ，用所测曲线
与测井自然伽马曲线进行对比归位 ，它受人为因素 干扰较小 ，准确度有很大的提高 ，且方便快捷 。
1996 年以来岩心地面伽马测试技术在新疆塔 指现场实验室得到广泛应用 ，产生了良好的经济效
第17 卷第2 期王艳琴等：岩心地面伽马测试系统及其在岩心归位中的应用·19 ·
益和社会效益。这项技术在胜利油田近两年来才开
始应用，效果也比较好。下面给出两个应用实例。
1. L1 井归位实例
L1 井是新疆塔里木塔中地区的一口取心探井,
取其井段为 4 986. 23 m～4 995. 33 m 的岩心测试分
析归位为例，这段岩心以黑灰色沥青质细砂岩、灰色
油迹细砂岩、灰褐色油浸细砂岩、绿灰色泥岩为主。
新生儿护理通过对岩心地面自然伽马曲线与测井自然伽马曲线
进行对比，如图2 所示，对比效果较好，两条曲线基
欧亨利二十年后
本吻合，结合岩性分析得出系统误差为- 5. 60 m ，即
钻井深度上提 5. 60 m , 归位后的取心井
4 980. 63 m～4 989. 73 m。
误差为1. 00 m ，即钻井深度下放+ 1. 00 m ，归位后的
取心井段为 2 730. 00 m～2 742. 00 m。
样品深度校正
岩心归位后，进一步的工作是对岩心样品深度
进行校正。样品深度校正计算公式为: 样品的测井frodo
深度= 样品的钻井深度+ 系统误差。L2 井的取心
目的是为开发沙四段油气藏提供有效数据，在储集
层共取孔、渗、饱、电镜、五敏性等样品69 块。其前
21 块样品的样品深度校正结果见表1 。
表1 样品深度校正结果表
图 2 L1 井岩心对比归位图
2. L2 井岩心归位实例
L2 井隶属王家岗油田,
东营凹陷王家岗断阶带王24 —34 断块构造高部位。
取其井段为 2 729. 00 m～2 741. 00 m 的岩心测试分
析归位为例，这段岩心以泥岩、灰质泥岩、泥质粉砂
岩、粉细砂岩为主。通过对岩心地面自然伽码曲线
与测井自然伽码曲线进行对比，如图3 所示，对比效
果较好，两条曲线基本吻合，结合岩性分析得出系统
图 3 L2 井第一筒岩心对比归位图
结论
用岩心地面自然伽马曲线与测井自然伽马曲线
对比法对岩心归位，人为因素影响小，且方便快捷, 准
确度高。岩心归位后校正样品深度，这样样品的化验
分析资料才会反映地下相应位置的实际情况, 应用这
种准确的岩心资料, 才会得出正确的结论。应用岩
心地面伽马测试方法归位岩心，为科研工作提供了及
时而准确的岩心资料，是很可取的。
参考文献knife的复数
1 胜利油田钻井指挥部《钻井地质》编写组. 钻井地质. 北
京：石油工业出版社,1985
2 周远田. 石油测井. 中国地质大学(武汉) ,1994 (教材)
3 李建. 岩心剖切、伽马测量、荧光照相技术操作规程及其
arrest应用. 胜利油田地质科学研究院岩心室,1998 (内部资料)
(收稿日期:2002 - 10 - 14 编辑: 高红霞)
·60 ·PE TROL EUM INSTRUME NTS Apr. 2003
AB STRACTS
Wang Yangen , Yang Changming , Shang Ziyuan and Dong Yan wu. Increasing the sphere of action of ultrasonic wave in do wnhole rock stratum by using the cylinder sound lens. PI, 2003 , 17( 2) :1～4
The main defect of the oil extraction by ultrasonic wave is that the propagation di stance of the ultrasonic wave in rock stratum is verily small. The reason is that the wave front of the ultrasonic wave in rock stratum is the cylinder. The wave front of the cylinder spreads with the increa of the propagation di stance. The wave front of the ultrasonic wave can be changed by usi ng the sound lens. The intensity of the ultrasonic wave will increa when the ultrasonic wave is focud by the sound lens in rock stratum. A sound lens usi ng for oil extraction was designed in the paper accordi ng to the refracti on law of sound. The sphere of action and the pha difference of ultrasonic wave in rock stratum were calculated. The i nfl u2 ence of the size of sound lens and the sound veloci ty of sound lens material and crude oil and rock stratum on the sphere of action was studied. When the material and size of sound lens is chon , the sound vel ocity of crude oil and rock stra2 tum and the size of oil well must be taken into account. The sphere of action of ultrasonic wave in rock stratum by usi ng the sound lens can be tens centimeter.
Key Words : sound lens ,cylinder surface ,oil well ,ultrasonic wave ,action sphere
Li Wei , Cao Gang ,Li Kaifeng , Wang Yongxiang and Wang Fang. SJ - CY memory manometer. PI, 2003 , 17 ( 2) :5～8
The paper introduces the characteristics and technology targets of SJ - Y memory manometer ,describes project de2 si gn ,driver program design of the logging i nstrument ,surface software desi gn ,and gi ves conclusion and developing di rec2 tion. This instrument is fit for production well loggi ng and testing.
Key Words :formati on pressure testing ,manometer ,production logging ,well testing ,aling testing Li Qian and Qin Wei. Design of sampling program for CSJ2B long spaced sonic logging. PI, 2003 ,17( 2) :9～10 The long spaced sonic tool bad on SKC2000 computerized l oggi ng system has many different aspects on data acqui2 sition.
Bad on description of hardware environment , the paper introduces desi gn spirit and method of sampling pro2 gram , and provide specific realizing process.
Key Words :l ong spaced soni c l oggi ng ,sampling program ,sync ,command word ,interrupt rvice program ,pha
Huang Zhaoxiang , Guo Maicheng and Shen Lixiang. Design of processing system of pul logging tools. PI, 2003 ,17( 2) :11～14
Desi gn a system of processing pul logging tool. Its hardware takes modularization. Si gnal processing system us Auto2gai n , auto2threshol d and sluggi sh2comparator. Thi s circuit has better adaptability. Capability in anti2i nterference is strong. It also shows a few simple program correspondi ng to its hardware. Besides measuring frequency of pul , it has special circuit of measuring cycle of pul. Ud in computerized logging surface system ,the system is proved to be rela2 tively simple and practicable.
Key Words :L oggi ng tool , pul signal , auto2gain , auto2threshold , sl uggi sh2comparator , counter , port
Deng Guangyu. Rearch of zonal pressure measuring technique in t wo2rervoir commingled producing w ell . PI, 2003 ,17( 2) :15～17
We devel op a zonal pressure measuring technique in two2rervoir commingled producing well aiming to sol ve the problem that we could not measure that before ,and integrally desi gn downhol e instruments and tool s combining the speci f2 ic lifting mandrel in two2rervoir commingled produci
ng well. The downhol e instruments can simultaneousl y inspect the pressure of rervoir Putaohua and that of rervoir Fuyu by specific pressure2conducting structure. The data after inte2 grated modificati on are transferred to the surface equipment through a m ono2conductor cable , the surface equipment can work at two modes , m emory and direct reading. On2si te testing results proves that the techni que can meet the demands of zonal pressure measuring in two2rervoir commingled producing well.
Key Words : commingled producing well , zonal pressure ,downhole instrument
Wang Yanqin ,Yang Fuzhou , An Mingquan , Fu Wenli and Wang Zhiqiang. Core gramma testing system and its application to core location. PI, 2003 ,17( 2) :18～19
The paper introduces system structure ,gamma2ray testing ,core location , sample depth emendation and so on. C on2
Vol . 17 No . 2 PE TROL EUM INSTRUME NTS·61 ·trasting core ground gamma curve with l ogging gamma curve locate the core , and then emend the depth of the core sam2 ple , which improve veracity of the core data.
Key Words : gamma testing system ,core ,gamma raycurve ,core l ocation ,sample depth emendation
Hu Changsong and Chi Shan wu. Development of a multif unction memory surface pressure and temperature monitor. PI, 2003 ,17( 2) :20～21
A new multifuncti on m em ory surface pressure and temperature m oni tor is introduced. Techni cal contents such as working principle ,main configuration ,performance parameter ,applied fields ,and technical features such as l ow2powered consume ,miniaturizati on , multifunction , compressi ve m emory , data interpretation are prented. Several desi gni ng tech2 niques are stated , such as the space restriction or defect of hardware can be made up for by software technique , all kinds of requirement can be m et by the technique of sampling interval table ,etc.
Key Words : m emory ,pressure ,temperature ,moni tor ,software
Liu Qinglong ,Ding Jingli and Lin Nan. E ffect analysis and f ield application of the nature gamma2induction log2 ging tool w hile drilling. PI, 2003 ,17( 2) :22～24
The NGR and induction resi sti vity while loggi ng System is compod of MWD , NGR and resistivity
tool. The paper introduces measuring principle of NGR and L WD Induction Resi sti vity Tool . Field application of this L WD system and som e effect factor of instrument respon were described.
Key Words :induction resi sti vity tool while loggi ng ,nature gamma ray tool while ,electric and magnetic Induction ,skin ef2 fect correction , trajectory C ontrol
class
Jiang Yiwan , Gu Baojiang , Sun Houling , Wang Shouwen and Cheng Huayang. DST2 Ⅰ、Ⅲpetroleum electrical de watering analytical instrument. PI, 2003 ,17( 2) :25～26
Distillation and centrifugation are conventional methods of crude oil2bearing analysis. The paper introduces opra2 tional principle ,structural composi tion ,technical index and properties of the petroleum electrical dewateri ng anal ytical i n2 strument. The real application results show that ,the instrument overcomes a l ot of shortcomings of distillation and cen2 trifugati on analysi s methods ,and has advantage of large analytical capacity , high accuracy , rapid speed ,simple operation , safety ,power saving ,and non2condary sampling error.
Key Words :crude ,analysis ,principle ,composi tion ,index
Shao Zaiping. Calibration of the high resolution induction logging tool. PI, 2003 ,17( 2) :27～28 ,
31 The equation that describes the relati onship between conductivi ty (both in2pha and quadrature) and impedance ,is derived according to the calibration theory of the induction loggi ng tool. The optimum calibration positi on and optimum ra2 dius of the calibration l oop ,which calibrates HRI tool ,are obtained in this paper. The calibration method of HRI tool is gived.
Key Words :HRI tool , calibration , in2pha conductivity , quadrature conductivity
Zhang Keq in , Zheng Ling , Zheng Qing and Bao Jie. HDC2 Ⅱcombination annulus logging tool and its applica2 tion. PI, 2003 ,17( 2) :29～31
HDC2 Ⅱcombi nati on annulus logging tool s is a new tools developed after paratel y ones. The Wireline Tel emetry Cartridge is led into the string ,packer2technology is adopted in testing of Hydro2Hol d and Fl owmeter ,parameter ands up to ven . Its circuit is simplified ,and performance is improved becau of the application of the Central Processor Unit. Seven curves can be obtained once. The tool is ud to dynamic detection of pumping well. The strucure characteri stic and circuit principle and application of the tools is described.
Key Words :annul us logging ,pumping unit well ,production profile ,parameter ,transducer ,packer ,telemtry
Zhang Weibing , Sun Lei , Wang Feng , Wang Hongjun and Liu Yuqing. Viscous oil rervoir identif ication using crossplot technique. PI, 2003 , 17( 2) :32～33
The flow2abili ty of viscous oil is poor in the rervoir , so the depth of mud filtrate invasi on is l ow ,and the value of difference between the resi stance of lateral resi stance l oggi ng is small. Bad on the characters and the other parameters , the cross2pl ot parameters (RR2RK) are created in the paper. The better effect is gotten in the identification of viscous oil rervoir.
Key Words :vi scous oil ,resistance ,crossplot m ap ,identification
Li Lipin , Song Xijin , Gao Guo wang and Dang Ruirong. Testing method and experimental study of large impact current. PI, 2003 , 17( 2) :34～36
In resistivity l ogging and formati on testing ,in order to im prove exploration deepness to medi um ,we hope to adopt
