CAJ | 학술논문

火烧山北部（简称火北）石炭系推覆体厚度超过1000 m ，机械钻速低，为了提高钻速，在火北021井和火北022井进行了气体钻井技术试验。为了确保气体钻井的顺利实施，利用邻井钻井/测井资料建立了地层三压力剖面，根据地层三压力剖面进行了井眼稳定性评价，通过优选井身结构封隔不稳定地层，利用环空钻屑传输比计算最佳注气量。试验结果表明，火北地区石炭系推覆体适用于气体钻井技术，气体钻井的平均机械钻速达到5.37 m/h ，较邻井同井段常规钻井提高4倍左右，钻井周期大幅缩短。这表明，火北地区应用气体钻井技术可以提高钻速，能为加快该地区致密油的勘探进程提供技术保障，同时也为准噶尔盆地火山岩地层钻井提速积累了宝贵经验。
화소산북부（간칭화북）석탄계추복체후도초과1000 m ，궤계찬속저，위료제고찬속，재화북021정화화북022정진행료기체찬정기술시험。위료학보기체찬정적순리실시，이용린정찬정/측정자료건립료지층삼압력부면，근거지층삼압력부면진행료정안은정성평개，통과우선정신결구봉격불은정지층，이용배공찬설전수비계산최가주기량。시험결과표명，화북지구석탄계추복체괄용우기체찬정기술，기체찬정적평균궤계찬속체도5.37 m/h ，교린정동정단상규찬정제고4배좌우，찬정주기대폭축단。저표명，화북지구응용기체찬정기술가이제고찬속，능위가쾌해지구치밀유적감탐진정제공기술보장，동시야위준갈이분지화산암지층찬정제속적루료보귀경험。
The carboniferous nappe in northern Huoshaoshan is over 1 000 m in thickness ,which poses low penetration rate problem in drilling .In order to speed up well drilling ,test of gas drilling was conduc-ted in Well Huobei 021 and Huobei 022 .To ensure the successful implementation of gas drilling ,drilling and & logging data of offset wells were used to predict pore pressure ,fracturing pressure and borehole col-lapse pressureset up the three formation pressure of the carboniferous nappe interval ,borehole stability was evaluated based on these pressure profiles ;formations with potential stability problems were sealed through optimizing casing program ;optimum gas injection rate was calculated by using annular drilling cutting transport ratio .The test showed that gas drilling technique is suitable for carboniferous nappe in Northern Huoshaoshan ,w here average penetration rate of gas drilling reached 5.37 m/h ,about 4 times higher than conventional drilling at the same interval ,resulting in significant reduction in drilling cycled .This showed that gas drilling in Huobei Area could increase drilling speed ,which not only provides technical guarantee for rapid exploration of tight oil ,but also accumulates valuable experience for expediting drilling speed in volcanic strata of Junggar Basin .