让纳若尔低渗薄油层水平井LWD钻井实践与认识

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1、第36卷第5期石油钻采工艺V01．36No．52014年9月0ILDRILLING&PRODUCT10NTECHNOLOGYSept．2014文章编号：1000—7393(2014)05—0038—03doi：10．13639~．odpt．2014．05．010让纳若尔低渗薄油层水平井LWD钻井实践与认识王海涛董孟坤汪华成李俊波包成虎周冀(1．中国石油天然气勘探开发公司，北京100034；2．渤海钻探工程技术研究院，天津300457)引用格式：王海涛，董孟坤，汪华成，等．让纳若尔低渗薄油层水平井LWD钻井实践与认识[J]．石油钻采工艺，2

2、014，36(5)：38．40．摘要：哈萨克斯坦让纳若尔油田且tO区块油藏渗透率低，仅为l0mD，属于特低渗透率油藏，同时该地区油层薄，仅为2～3m，已钻直井单井产能低，多年来一直未能得到有效开发。为挖掘剩余油潜力，开发低渗难动用储量，同时为提高低渗油藏开发效率，尝试应用水平井钻井技术，并结合导眼钻井、LWD地质导向、地质录井等关键技术，顺利钻成H5147井和H4061井2口水平井，有效保证了水平井段中靶率和油层钻遇率，最终获得较高的单井产能，单井初期日产分别达到89t和91t，达到直井初期产能的3倍。其中，导眼钻井有效确定油层深度与厚度

3、，LWD地质导向和地质录井则保证了井眼轨迹在油层中穿行。2口井的产能效果证明了水平井及配套钻井技术在ⅡIO区块的适用性和必要性。关键词：低渗透；薄油层；剩余油；水平井；LWD；导眼；地质录井；让纳若尔油田中图分类号：TE249文献标识码：BLWDdrillingpracticeandunderstandinginlow—permeabilitythinreservoirhorizontalwellsofZhanarolOilfieldWANGHaita0，DONGMengkun，WANGHuacheng，LIJunb0，BAOChengh

4、u，ZHOUJi(1．ChinaNationalOilandGasExplorationandDevelopmentCorporation，Bering100034，China2BohaiDrillingEngineeringTechnologyResearchInstitute，Tianjin300457，China)Abstract：InZhanarolOilfieldinKazakhstan，thereservoirsin且K】Blockareinlow—permeability,only10md，belongingtoextra—

5、lowpermeabilityreservoirs；meanwhile，theoilreservoirsinthisBlockarethin，only2-3m；thedrilledverticalwellshavelowcapacity,SOtheoilfieldhasnotbeefectivelydevelopedformanyyears．Inordertotaptheremainingoilpotential，developthelow—permeabilityhard—to—producereservesandalsoimprove

6、thedevelopmenteficiencyoflow—permeabilityreservoirs，thehorizontalwelldrillingtech—nologywastried，andtwohorizontalwells—H5147andH4061weresuccessfullydrilledtogetherwithcriticaltechniqueslikepilotholedrilling，LWDgeo·steeringandgeologicallogging，etc．whicheffectivelyensuredth

7、etargethitrateofthehorizontalsectionanden—counteringrateofoilreservoirandfinallyobtainedhighsinglewellproductivity．Theinitialdailyproductionsofsinglewellswere89tand91trespectively,aboutthreetimesofinitialproductionofverticalwel1．Amongthetechniques，thepilotholedrillingeffe

8、ctivelydeterminedthedepthandthicknessofoilreservoir；LWDgeo—steeringandgeologicalloggingensuredth