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1、第33卷第3期石油鉆采工藝V01．33No．32011年5月0ILDRILLING&PRODUCTIONTECHNOLOGYMav2011文章編號(hào)：10007393(2011)03—0001—04巴楚探區(qū)深井鉆井難點(diǎn)分析與技術(shù)對(duì)策王興武趙圍順孫雪馬文英陳迎偉寧長征(1．中原石油勘探局鉆井工程技術(shù)研究院，河南濮陽457001；2．中原石油勘探局塔里木鉆井公司，新疆庫爾勒841000)摘要：新疆巴楚探區(qū)是中石化在西北地區(qū)的一個(gè)重要勘探開發(fā)區(qū)域，勘探面積大，井深，完鉆井少，可參考資料少。該區(qū)鉆井施工難點(diǎn)主要是鉆遇地層年代古老、巖性復(fù)雜而堅(jiān)硬，部分地層存
2、在石膏和膏質(zhì)泥巖及高壓鹽水層，鉆井．Y-作存在鉆速慢、縮徑、卡鉆及地層坍塌等技術(shù)難題，致使鉆井復(fù)雜故障率高、周期長。針對(duì)這些難題，提出了上部地層采用Kcl一聚合物鉆井液體系、下部采用Kc1一聚磺鉆井液體系，優(yōu)選封堵材料，優(yōu)化鉆具組合，深部地層優(yōu)選鉆頭等技術(shù)對(duì)策。通過現(xiàn)場(chǎng)實(shí)施，鉆井提速提效效果顯著，為該區(qū)的進(jìn)一步勘探開發(fā)提供較好的借鑒作用，并提出了用減速渦輪復(fù)合鉆井方式、試用小彎度螺桿和井壁修復(fù)器等提速提效建議。關(guān)鍵詞：巴楚探區(qū)；深井；鉆井；防阻卡；井壁穩(wěn)定；提速中圖分類號(hào)：TE24文獻(xiàn)標(biāo)識(shí)碼：ATechnicalcountermeasuresan
3、danalysisondeepwelldrillingdificultiesinBachuexplorationblockWANGXingwu，ZHAOGuoshun，SINXue，MAWenying，CHENYingwei，NINGChangzheng(1．DrillingEngineering＆TechnologyInstitute，ZPEB，Puyang457001，China；2TarimDrillingCompany，ZPEB，Kurle841000，China)Abstract：BachuBlockisanimportantexplo
4、rationanddevelopmentareaofSinopecinNorthwestChina，withvastareatobeexplored，largedepthofthewell，andfewcompletedwells，andfewoffsetwellmaterialscanbetakenasthereferenceindrillingopera．tion．theformationfeaturesanddrillingdificultieswereanalyzedinthepaper，includingpalaeogeography,
5、complexandhardlithology,gypsum，mudstoneandhighpressuresaltwaterexistinginsomeformations，resultinginlowpenetrationrate，tightholedrillpipestuck，，andholewallsloughing，etc．Thedificultiesalsoleadtohightroublerateandlongerdrillingcycle．Inordertosolvetheseproblemsthe，upperformations
6、weredrilledwithKC1一polymerdrillingfluids，andlowerformationsweredrilledwithKC1一polysulfonatedrillingfluid．Andpluggingmaterialscreening，bottomholeassemblyoptimization，andbitsoptimizationfordeepformationdrillingwerealsotakenasthecountermeasures．Throughonsiteapplications，thepenet
7、rationrateraisedsignificantly,whichprovidedagoodexampleofdrill—inginthisarea．Thesuggestionwasalsoproposedtouseacompounddrillingmode，gear-downturbine，littlebentscrewandboreholereformingtoolstoraisethedrillingrate．Keywords：Bachuexplorationblock；deepwell；drilling；pipestuckpreven
8、tion；wellborestabilization；penetrationrateraising巴楚探區(qū)位于新疆巴楚縣境內(nèi)，地處天山南
